Journal articles: 'Water drilling'

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Yue, Qian Sheng, Qing Zhi Yang, Shu Jie Liu, Bao Sheng He, and You Lin Hu. "Rheological Properties of Water Based Drilling Fluid in Deep Water Drilling Conditions." Applied Mechanics and Materials 318 (May 2013): 507–12. http://dx.doi.org/10.4028/www.scientific.net/amm.318.507.

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The rheological property of the drilling fluid was one of the focus problems in deep-water drilling, which was widely concerned. In the article, the viscosity-temperature properties of commonly used water soluble polymeric solution, polymeric brine solution, bentonite slurry, polyacrylamide-potassium chloride drilling fluid with different densities and water-base drilling fluid systems commonly used for China offshore well drillings were studied. 4°C-to-20°C viscosity ratio and 4°C-to-20°C YP ratio were used to judge the thickening level of drilling fluids due to low temperature. The experimental results show that on the condition of without considering the influence of pressure on the rheological property of water-base drilling fluid, its viscosity and yield point raised obviously with the decrease of temperature, but the increase level is proximately the same, its 4°C-to-20°C apparent viscosity ratio is basically within the 1.50. Analysis indicates that the viscosity of water-base drilling fluid depends on the viscosity of dispersed media. The performance of water medium determines the viscosity-temperature property of the water-based drilling fluid. It is proposed that in deep water drillings, if a water-base drilling fluid is used, it is not necessary to emphasize the influence of deep water and low temperature on the flowability. On the condition of guaranteeing wellbore stability and borehole cleaning, it is more suitable for using the water-base drilling fluid with low viscosity and low gel strength for deep water well drillings.

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Hoshino, Masashi. "Drilling fluid for deep water drilling." Journal of the Japanese Association for Petroleum Technology 68, no. 5 (2003): 397–403. http://dx.doi.org/10.3720/japt.68.397.

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Furutani, Akito. "Deep water drilling technology." Journal of the Japanese Association for Petroleum Technology 60, no. 5 (1995): 340–48. http://dx.doi.org/10.3720/japt.60.340.

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MIYAZAKI, Eigo. "Deep Water Drilling by the Scientific Drilling Vessel “CHIKYU”." JAPANESE JOURNAL OF MULTIPHASE FLOW 25, no. 3 (2011): 213–20. http://dx.doi.org/10.3811/jjmf.25.213.

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Zazarli Shah, Mohamad Safwan, Arina Sauki, Wan Zairani Wan Bakar, Nurul Aimi Ghazali, and Azlinda Azizi. "Drilling Fluid Design for Shale Gas Drilling." Advanced Materials Research 1113 (July 2015): 617–24. http://dx.doi.org/10.4028/www.scientific.net/amr.1113.617.

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Shale gas nowadays is an important source of unconventional gas. The limited conventional gas supply makes the unconventional sources as a new source of gas. In this research, the aim is to design a mud formulation that can carry out essential functions of mud for shale gas drilling. Commonly for shale gas drilling, water based mud is used. However, water based mud is ineffective when dealing with water-sensitive shale. The alternative way to deal with this type of shale is using synthetic-based mud (SBM) or oil-based mud (OBM). OBM is an effective mud while drilling well. However, it is toxic and gives negative impact to environment. SBM somehow is more environmental friendly compared to oil based and ester is one of the synthetic based fluids. In order to prove this statement, a toxicity test was carried out to investigate the impact of ester based mud on selected marine life. The results of the test were compared with past research results. The ester use in this research is methyl-ester C12-C14 derived from palm oil and the mud was formulated at different oil-water ratios which are 70/30, 80/20 and 90/10, respectively and the best rheological performance can be seen at 80/20 oil-water ratio. Then, the performance of this mud had been compared to other types of mud which are sarapar-based and WBM. The findings revealed that the rheological performance of ester based mud is comparable with common based mud used for shale gas drilling. Apart from that, it is less toxic than other based mud which can maintain 60% prawn’s survival even after 96 hours exposure in 100,000 ppm of mud concentration in artificial seawater.

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Rassenfoss, Stephen. "Drilling Slowdown Sparks Water Trading." Journal of Petroleum Technology 69, no. 11 (November 1, 2017): 30–31. http://dx.doi.org/10.2118/1117-0030-jpt.

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Nemoto, Tetsuya, and Hidefumi Imamura. "Deep-water drilling in Indonesia." Journal of the Japanese Association for Petroleum Technology 60, no. 5 (1995): 374–81. http://dx.doi.org/10.3720/japt.60.374.

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Kerimov, T. M., Kh M. Islamov, N. M. Aliyev, R. M. Zeynalov, and E. A. Kazimov. "Effect of produced water on indicators of drilling muds." Azerbaijan Oil Industry, no. 6 (June 15, 2020): 26–30. http://dx.doi.org/10.37474/0365-8554/2020-6-7-26-30.

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The article deals with the problems associated with the ""invasion"" of produced water into the composition of drilling muds in the process of drilling wells in anomalous conditions. It is marked that various types of complications, particularly, debris and collapses, emersion and adsorption cause very serious problems in the well construction, for the elimination of which large investments are required. For example, drilling mud influenced by produced water was used in some fields of the Republic. The electrical conductivity parameter was estimated based on the carried out research. This indicator allows evaluating the physical-chemical properties of the drilling mud before and after the treatment with formation fluid. It should be noted that the good electrical conductivity of the drilling mud is also significant for geophysical surveys. In order to preserve required properties of the drilling mud under conditions of ingress into the composition of the produced waters, the treatment of the drilling mud with salt-resistant polymeric reagents is recommended.

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Zhang, Jianguo, Juan C. Rojas, and David E. Clark. "Stressed-Shale Drilling Strategy--Water-Activity Design Improves Drilling Performance." SPE Drilling & Completion 23, no. 04 (December 1, 2008): 385–93. http://dx.doi.org/10.2118/102498-pa.

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Okoro, Emeka Emmanuel, Kevin C. Igwilo, Angela Onose Mamudu, Evelyn Bose Ekeinde, and Adewale Dosunmu. "Data on shale-water based drilling fluid interaction for drilling operation." Data in Brief 19 (August 2018): 1620–26. http://dx.doi.org/10.1016/j.dib.2018.06.014.

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Dong, Pu, Ren, Zhai, Gao, and Xie. "Thermoresponsive Bentonite for Water-Based Drilling Fluids." Materials 12, no. 13 (June 30, 2019): 2115. http://dx.doi.org/10.3390/ma12132115.

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As an important industrial material, bentonite has been widely applied in water-based drilling fluids to create mud cakes to protect boreholes. However, the common mud cake is porous, and it is difficult to reduce the filtration of a drilling fluid at high temperature. Therefore, this paper endowed bentonite with a thermo response via the insertion of N-isopropylacrylamide (NIPAM) monomers. The interaction between NIPAM monomers and bentonite was investigated via Fourier infrared spectroscopy (FTIR), isothermal adsorption, and X-ray diffraction (XRD) at various temperatures. The results demonstrate that chemical adsorption is involved in the adsorption process of NIPAM monomers on bentonite, and the adsorption of NIPAM monomers accords with the D–R model. With increasing temperature, more adsorption water was squeezed out of the composite when the temperature of the composite exceeded 70 °C. Based on the composite of NIPAM and bentonite, a mud cake was prepared using low-viscosity polyanionic cellulose (Lv-PAC) and initiator potassium peroxydisulfate (KPS). The change in the plugging of the mud cake was investigated via environmental scanning electron microscopy (ESEM), contact angle testing, filtration experiments, and linear expansion of the shale at various temperatures. In the plugging of the mud cake, a self-recovery behavior was observed with increasing temperature, and resistance was observed at 110 °C. The rheology of the drilling fluid was stable in the alterative temperature zone (70–110 °C). Based on the high resistance of the basic drilling fluid, a high-density drilling fluid (ρ = 2.0 g/cm3) was prepared with weighting materials with the objective of drilling high-temperature formations. By using a high-density drilling fluid, the hydration expansion of shale was reduced by half at 110 °C in comparison with common bentonite drilling fluid. In addition, the rheology of the high-density drilling fluid tended to be stable, and a self-recovery behavior was observed.

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Hayes, Alan. "Drilling water wells in disaster areas." Waterlines 6, no. 4 (April 1988): 10–13. http://dx.doi.org/10.3362/0262-8104.1988.016.

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Haris, Muhammad, Muhammad Khurram Zahoor, Muhammad Saleem Khan, Muhammad Zubair Abu Bakar, Muhammad Mansoor Iqbal, and Yasir Majeed. "Underground Water Contamination by Drilling Mud." Pakistan Journal of Nutrition 12, no. 1 (December 15, 2012): 101–2. http://dx.doi.org/10.3923/pjn.2013.101.102.

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Tang, Bo, Guang Tong Feng, and Hao Xu. "Water Absorption Technology of Gas Drilling." Advanced Materials Research 1006-1007 (August 2014): 112–14. http://dx.doi.org/10.4028/www.scientific.net/amr.1006-1007.112.

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In recent years, the development of super-absorbent material was very fast, its ability to absorb water up to several hundred or even thousands times of its own weight, it provides a new way of gas drilling to solve the water carry problem. According to the characteristic of the formation, we optimized polyacrylic acid salt as the water absorbent material, and evaluate salt resistance, temperature resistance and compression resistance. And we discussed the feasibility and recycling of the technology. And we find that this kind of super-absorbent material which can absorb deionized water 1484 times,absorb 0.9% NaCl aqueous solution 687 times,absorb 50% ethanol 705 times, that can meet the water carrying requirements of gas drilling.

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Struchtemeyer, Christopher G., James P. Davis, and Mostafa S. Elshahed. "Influence of the Drilling Mud Formulation Process on the Bacterial Communities in Thermogenic Natural Gas Wells of the Barnett Shale." Applied and Environmental Microbiology 77, no. 14 (May 20, 2011): 4744–53. http://dx.doi.org/10.1128/aem.00233-11.

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ABSTRACTThe Barnett Shale in north central Texas contains natural gas generated by high temperatures (120 to 150°C) during the Mississippian Period (300 to 350 million years ago). In spite of the thermogenic origin of this gas, biogenic sulfide production and microbiologically induced corrosion have been observed at several natural gas wells in this formation. It was hypothesized that microorganisms in drilling muds were responsible for these deleterious effects. Here we collected drilling water and drilling mud samples from seven wells in the Barnett Shale during the drilling process. Using quantitative real-time PCR and microbial enumerations, we show that the addition of mud components to drilling water increased total bacterial numbers, as well as the numbers of culturable aerobic heterotrophs, acid producers, and sulfate reducers. The addition of sterile drilling muds to microcosms that contained drilling water stimulated sulfide production. Pyrosequencing-based phylogenetic surveys of the microbial communities in drilling waters and drilling muds showed a marked transition from typical freshwater communities to less diverse communities dominated byFirmicutesandGammaproteobacteria. The community shifts observed reflected changes in temperature, pH, oxygen availability, and concentrations of sulfate, sulfonate, and carbon additives associated with the mud formulation process. Finally, several of the phylotypes observed in drilling muds belonged to lineages that were thought to be indigenous to marine and terrestrial fossil fuel formations. Our results suggest a possible alternative exogenous origin of such phylotypes via enrichment and introduction to oil and natural gas reservoirs during the drilling process.

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Feng, Guang Tong, and Ye Bang Tan. "A New Super Absorbent Polymer to Solve Formation Water of Gas Drilling." Advanced Materials Research 1004-1005 (August 2014): 592–95. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.592.

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Gas drilling technology have very distinct advantages, it can improve ROP greatly, shorten the drilling cycle, reduce drilling costs, but it's scope of application was greatly limited by the problems of formation water and wellbore stability. This project developed a kind of super-absorbent material which can absorb deionized water 1484 times,absorb 0.9% NaCl aqueous solution 687 times,absorb 50% ethanol 705 times, that can meet the water carrying requirements of gas drilling. it provides a new way of gas drilling to solve the water carry problem.

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Yang, Z. X., Y. B. Zhou, X. Z. Xiang, Z. B. Zhu, L. Pen, Y. W. Luo, and J. Lu. "Biodegradation of Waste Water-based Drilling Fluid From an Offshore Drilling Operation." Petroleum Science and Technology 31, no. 10 (May 15, 2013): 1001–7. http://dx.doi.org/10.1080/10916466.2011.626007.

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Zheng, Li Hui, Ming Wei Zhang, and Yong Lin. "A Multifunctional Drilling Fluid for Coalbed Methane Drilling." Advanced Materials Research 455-456 (January 2012): 1317–23. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.1317.

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With extremely complicated geological conditions, there is abundant coalbed methane in the China's Ordos Basin Area. As a result of coexistence of different pressure systems in the same one naked well section, there are so many problems taking place occasionally during the drilling process, such as the formation lost circulation and collapse, which require the drilling fluid with a perfect rheology behavior and inhibitive to improve the well-bore containment. The coalbed methane well completions are diverse, usually including vertical well, horizontal well, multi-branch well, and other different well types. So the drilling fluid must have cuttings carried effectively and protect formation damaged to ensure that the process of drilling is security and smooth. Lots of drilling methods are used in the coalbed methane drilling, besides normal nearly balanced drilling, the under balance drilling fluids such as the air, fog, foam, etc particularly improved. All this drilling fluids require itself working compatibility with other fluids in the hole. Therefore, the special state-funded science and technology project has developed a novel bionic Fuzzy-Ball drilling fluid to meet the coalbed methane. Without additional equipments, this novel drilling fluids can be made, with non-solid phase and low density, 0.8~1.0 g/cm3. The inert solids can also be used to adjust the property to more than 1.0g/cm3, matching the near/under-balanced drilling. The formation well-bore containment can effectively improve to meet to the more than 1000 meters coalbed methane drilling in the open or low pressure formation, To portable cuttings effectively under low rate, the ratio of yield point and plastic viscosity can be adjusted to 1.0Pa/mPa•s or more. Combined with the air drilling, this novel Fuzzy-Ball material could not be converted to fluid to solve the formation water production, cavings, completion and other operations. 10 wells application of using the Fuzzy-Ball drilling fluid to complete the coal bed methane wells overcoming water production, collapse, lost circulation and air drilling etc, taking five branches well FL-H2-L, "U" horizontal well DFS-02-H2, water production and collapse well J35, air drilling CLY22 for examples, are introduced to indicate the bionic Fuzzy-Ball fluid application on the coalbed methane drilling spot.

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Benson, T., J. Cherwinka, M. Duvernois, A. Elcheikh, F. Feyzi, L. Greenler, J. Haugen, A. Karle, M. Mulligan, and R. Paulos. "IceCube Enhanced Hot Water Drill functional description." Annals of Glaciology 55, no. 68 (2014): 105–14. http://dx.doi.org/10.3189/2014aog68a032.

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AbstractThe IceCube Neutrino Observatory was constructed at the South Pole during the 2004/05 to 2010/11 austral summer seasons. IceCube transforms 1 km3 of Antarctic ice into an astrophysical particle detector composed of 86 cables (strings) of optical sensors buried deep beneath the surface. Each string required drilling a borehole ∼60 cm in diameter to a depth of 2500 m. The 5 MW Enhanced Hot Water Drill was designed and built specifically for this task, capable of producing the required boreholes at a rate of one hole per 48 hours. Hot-water drilling on this scale presented unique challenges and was rich in lessons learned, yielding a collection of notable developments and takeaways (e.g. fuel-saving measures, thermal modeling, firn drilling and closed-loop computer control). Descriptions of system functionality and of lessons learned from IceCube drilling are presented.

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Augustin, L., H. Motoyama, F. Wilhelms, S. Johnsen, S. B. Hansen, P. Talalay, and N. Vasiliev. "Drilling comparison in ‘warm ice’ and drill design comparison." Annals of Glaciology 47 (2007): 73–78. http://dx.doi.org/10.3189/172756407786857820.

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AbstractFor the deep ice-core drilling community, the 2005/06 Antarctic season was an exciting and fruitful one. In three different Antarctic locations, Dome Fuji, EPICA DML and Vostok, deep drillings approached bedrock (the ice–water interface in the case of Vostok), emulating what had previously been achieved at NorthGRIP, Greenland, (summer 2003 and 2004) and at EPICA Dome C2, Antarctica (season 2004/05). For the first time in ice-core drilling history, three different types of drill (KEMS, JARE and EPICA) simultaneously reached the depth of ‘warm ice’ under high pressure. After excellent progress at each site, the drilling rate dropped and the drilling teams had to deal with refrozen ice on cutters and drill heads. Drills have different limits and perform differently. In this comparative study, we examine depth, pressure, temperature, pump flow and cutting speed. Finally, we compare a few parameters of ten different deep drills.

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Lv, Kai He, Tao Shi, and Xue Dong Wu. "Research and Development of a New Type of Water-Based Drilling Fluid." Advanced Materials Research 486 (March 2012): 464–71. http://dx.doi.org/10.4028/www.scientific.net/amr.486.464.

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To solve the problems of conventional water-based drilling fluid, a new type of water-based drilling fluid system that comprises of water, multi-functional treatment agent and soluble salts is developed. Multi-functional treatment agent provides the necessary properties and soluble salt maintains the required density. The composition of the drilling fluid is simple and it is easy to maintain. This new drilling fluid has the advantages of good rheology and filtration properties, strong plugging and inhibiting abilities, low solid content, pollution-free, wide adaptability, easy preparation and repeated use. It is a new type of drilling fluid system.

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Song, Xun Cheng, Xiao Long Xu, Sha Sha Hu, and Zhi Chuan Guan. "Full Transient Features of Heat Transfer and Sensitivities on Deep Water Wells." Advanced Materials Research 524-527 (May 2012): 1423–28. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.1423.

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Wellbore temperature is significant to well program and safety drilling for deep water drilling operations. On the basis of transient heat transfer mechanisms involved in deep water drilling among wellbore and formation and sea water, wellbore temperature profile, especially near sea bed and sensitivities to drilling fluid circulating duration, inlet temperature, water depth, water temperature, riser insulation and drilling fluid specific heat capacity have been analyzed via this model. Analysis show that deep-water wellbore temperature is much lower than a land well, the temperatures above sea bed normally ranges 10-30°C, and decreases with increased circulating duration; temperature at both outlet and bottom hole decreases drastically with increased water depth, and heat generation must be considered into estimating wellbore temperature profile especially one at bottom hole.

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Moran, K., M. Paulson, M. Lengkeek, P. Jeffery, and A. Frazer. "Deep Water Scientific Drilling in Lake Malawi, Africa." Marine Technology Society Journal 40, no. 1 (March 1, 2006): 29–35. http://dx.doi.org/10.4031/002533206787353637.

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A new deep water drilling system was developed and applied to recover deeply buried sediments for scientific analyses in one of the deep rift valley lakes of Africa—Malawi. This approach overcame the difficulty of maintaining position over a drill site in a remotely located, large, deep lake. Environmental conditions in Lake Malawi are similar to deep water marine settings and, as such, a marine approach was adopted for the Lake Malawi Drilling Project (LMDP). In February and March 2005, the modified pontoon, Viphya, successfully completed a scientific drilling expedition in Lake Malawi. This expedition recovered core at depths greater than 380 m below lake-floor in water depths as great as 600 m. The major refit of Viphya included installation of a moonpool, bridge, crew accommodations, mess, washroom, power system, dynamic positioning, and a drilling system. These major modifications required early pontoon surveys and naval architectural analyses and design work prior to their commencement. The expedition also used modified scientific coring tools with a marine geotechnical drilling rig for the first time, resulting in excellent core recovery and quality.

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Xie, Gang, Ming Yi Deng, Jun Lin Su, and Liang Chun Pu. "Study on Shale Gas Drilling Fluids Technology." Advanced Materials Research 868 (December 2013): 651–56. http://dx.doi.org/10.4028/www.scientific.net/amr.868.651.

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Via discussing the advantages and disadvantages of different types of oil-based drilling fluids, the main reason why oil-based drilling fluids are less used in our country is obtained that dont form a complete series of matching technology. The essence of wellbore instability caused by using water-based drilling fluids to drill shale is analyzed that the formation collapse pressure is greater than drilling fluids column pressure. The fundamental way of controlling borehole wall stability that use water-based drilling fluids to drill shale horizontal well was proposed that deeply researched the shale hydration mechanism, developed efficient blocking agent and inhibitors and established shale gas drilling fluid suppression system, which made water-based drilling fluids have excellent performance.

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Swigart, Joshua, Joonghyeok Heo, and Duane Wolf. "Soil Contamination Assessments from Drilling Fluids and Produced Water Using Combined Field and Laboratory Investigations: A Case Study of Arkansas, USA." International Journal of Environmental Research and Public Health 18, no. 5 (March 2, 2021): 2421. http://dx.doi.org/10.3390/ijerph18052421.

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Rotary drilling for oil and natural gas uses drilling fluid for lubrication of the bit, to seal off unstable shale layers, and floating out rock cuttings. Drilling fluid is a water–clay chemical mixture. Produced water is a water–sand chemical mixture. Land farming is a common disposal technique of drilling fluid and produced water. In the land farming process, amendments of fluid are repeatedly applied to the soil surface. Plant growth and soil chemical properties may be altered by additions of drilling fluid, because of alkalinity, salinity, trace elements, and petroleum residue contained in waste. The objective of this study was to determine the change in soil pH, electrical conductivity (EC), total nitrogen and carbon, and extractable nutrient levels following the land application of drilling fluid and produced water. The study was a comparison of three plots with similar soil properties and conditions. The three study plots had various levels of drilling fluid and produced water applications. The data show a major difference from field-to-field for EC, Na, and Cl levels. The EC and salt levels increased with additional applications of drilling fluid and produced water. The percent total nitrogen values and plant available P levels were very low in all fields. High EC and salt values, coupled with low N and P levels, would be detrimental to plant growth and development. To successfully vegetate this land-farm site, application of N and P fertilizer would be required. This study help to give a better understanding of practical ways to land-farm drilling fluid and produced water in a fashion that both minimizes environmental issues and is economically feasible in Arkansas. Thus, this research will provide important information for soil contamination management and contributes on understanding of the responses of soil properties to drilling fluid and produced water in the future.

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Parshukova, L. A. "TO THE ISSUE OF WASTE WATERS PURIFICATION IN WEST SIBERIA OIL AND GAS FIELD FACILITIES." Oil and Gas Studies, no. 6 (December 30, 2015): 104–8. http://dx.doi.org/10.31660/0445-0108-2015-6-104-108.

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The article considers the problems of anthropogenic environmental pollution in the oil and gas fields in West Siberia. Taking into account the experience of wells drilling and statistical reports data there was drawn a map of average many-years pollution of open water bodies in Khanty-Mansi Autonomous Okrug. It is shown that the major pollution is related with drilling wastes in the process of increasing the volumes of drilling and oil and gas production. To reduce the pollution it is offered to use modular plants for treatment of waste waters of BT and BTF type. These plants use will permit to discharge the treated waste waters into the water bodies of fishery purpose.

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Liu, Songyong, Hongsheng Li, and Huanhuan Chang. "Drilling Performance of Rock Drill by High-Pressure Water Jet under Different Configuration Modes." Shock and Vibration 2017 (2017): 1–14. http://dx.doi.org/10.1155/2017/5413823.

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In the rock drilling progress, the resistant force results in tools failure and the low drilling efficiency; thus, it is necessary to reduce the tools failure and enhance the drilling efficiency. In this paper, different configuration modes of drilling performance assisted with water jet are explored based on the mechanism and experiment analysis of rock drilling assisted with water jet. Moreover, the rotary sealing device with high pressure is designed to achieve the axial and rotation movement simultaneously as well as good sealing effect under high-pressure water jet. The results indicate that the NDB and NFB have better effects on drilling performance compared with that of NSB. Moreover, the high-pressure water jet is helpful not only to reduce the drill rod deflection, but also to reduce the probability of drill rod bending and improve the drill rod service life.

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Ali, Fadi, Hassan Bahrami, Po Chu Byfield, and Jijin Mathew. "Production optimisation and water control in oil/water producing wells using horizontal downhole water sink technology." APPEA Journal 51, no. 1 (2011): 577. http://dx.doi.org/10.1071/aj10041.

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Water breakthrough and the flow of water towards the perforations of a producing well increase production operation costs and influence overall recovery efficiency. To control water production, a downhole water sink can be used in which a well is completed in both oil and water zones. Water is produced from an interval in water zone, which can result in the same pressure drop below water oil contact (WOC) as the pressure drop created by oil or gas production. This system can reduce water production through oil zone perforations. Water produced from water zone perforations can then be injected in deeper aquifers intervals. This technology can also be implemented in horizontal and multi-lateral wells to further increase hydrocarbon recovery with fewer water problems. This study examines the use of horizontal downhole water sink technology to increase oil recovery. Numerical simulation is performed to optimise oil production and water control in a multi-layered oil reservoir, by optimising the direction of drilling and the downhole water sink method. Different scenarios of drilling direction and horizontal down-hole water sink method are examined to identify the option that provides maximum oil recovery. The simulation results showed that drilling horizontal wells in a north–south direction resulted in higher well productivity, and that wells with significantly more water production problems can be controlled using a horizontal downhole water sink.

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Liu, Gang, Pavel Talalay, Rusheng Wang, Yang Yang, Jialin Hong, Da Gong, An Liu, and Dayou Fan. "Design Parameters of Hot-Water Drilling Systems." Water 11, no. 2 (February 7, 2019): 289. http://dx.doi.org/10.3390/w11020289.

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Currently, hot-water drill systems are actively used to observe ocean cavities under ice shelves, detect the effects of climate change on glaciers, retrieve sub-ice seabed samples, study the internal ice structure with video imaging, log temperatures, measure deformations within ice, determine basal sliding velocity, provide clean access to subglacial lakes, and many other scientific applications. The main parameters of hot-water drilling systems in any configuration are flow rate, delivery pressure, and temperature of the delivered water. The controlled outcome variables are the diameter of the drilled borehole, rate of penetration, power and fuel consumption for ice melting, and refreezing rate of the borehole. The independent variables while drilling are the current/target depth and the temperature of the ice. The paper aims to present a design procedure for hot-water drilling parameters that are necessary to choose appropriate equipment and tools at the planning stage.

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Carter, Richard, Kerstin Danert, Peter Ball, Ronnie Rwamwanja, and Jamil Ssebalu. "Low cost water well drilling in Africa." Waterlines 20, no. 2 (October 2001): 7–10. http://dx.doi.org/10.3362/0262-8104.2001.049.

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Schawann, J. C., and C. Sparks. "Riser Instrumentation: Deep Water Drilling Campaign Results." Journal of Energy Resources Technology 107, no. 4 (December 1, 1985): 408–14. http://dx.doi.org/10.1115/1.3231211.

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During the 1982–1983 drilling campaign in the Mediterranean, two wells were drilled by the Discoverer Seven Seas in record water depths of 1714 m and 1252 m. The riser was equipped with instruments to measure tensions, moments and angles at points close to the extremities. Simultaneously ship motions and environmental conditions including current measurements at various depths were recorded by ELF AQUITAINE and I.F.P. A large quantity of data relating to riser behavior was gathered and recorded. The results available for publication include raw data relating to the evolution of current at different depths, long period lateral ship motion acting at the riser top end, induced by the dynamic positioning system. Simultaneous measurements of angles at extremities were recorded to confirm the validity of two-dimensional riser analysis. Measurements of riser parameters made with deliberately large ship excursions from the vertical, enabled the riser practical profile to be compared with the theoretical one. Measurements, made with the riser hung off in storm conditions, confirmed the existence of large dynamic tensions and enabled them to be compared with the theoretical values. Correlation of the fluctuation of cable tension with ship heave has led to practical values of tensioner stiffness.

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Boesch, Donald. "Deep-water drilling remains a risky business." Nature 484, no. 7394 (April 2012): 289. http://dx.doi.org/10.1038/484289a.

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Xie, Wenbing, and Jacqueline Lecourtier. "Xanthan behaviour in water-based drilling fluids." Polymer Degradation and Stability 38, no. 2 (January 1992): 155–64. http://dx.doi.org/10.1016/0141-3910(92)90009-t.

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Sharapov, Evgenii, Christian Brischke, Holger Militz, and Elena Smirnova. "Effects of white rot and brown rot decay on the drilling resistance measurements in wood." Holzforschung 72, no. 10 (October 25, 2018): 905–13. http://dx.doi.org/10.1515/hf-2017-0204.

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AbstractAn IML-RESI PD 400 drilling tool and a standard spade drill bit (IML System GmbH, Wiesloch, Germany) were used to study the impact of white and brown rot decay on drilling resistance (DR) measurements in wood. In total, 720 drillings were made in specimens of Scots pine (Pinus sylvestrisL.) heartwood and sapwood, European beech (Fagus sylvaticaL.) and English oak (Quercus roburL.), which were decayed byConiophora puteanaandTrametes versicolor. Drillings were made with specimens conditioned in normal climate (20°C/65% RH) and with specimens vacuum-impregnated in water. DR and feeding force (FF) were negatively correlated with mass loss (ML) due to fungal decay. The intensity of reduction was higher for DR than for FF with increasing ML for all decay types and moisture contents (MCs). A significant difference (at 95% confidence level) in DR was found between decay types using water-saturated (WS) Scots pine specimens (3–35% ML). In most cases, DR revealed a higher predictive power of the models for ML prediction than FF. Free water in decayed specimens significantly reduced the DR and FF. Hence, the effect of ML on DR and FF of decayed and WS wood was less prominent.

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Lv, Kai He, Xue Dong Wu, Tao Shi, Kuan Long Ren, and Yu Xia Liu. "An High-Performance Water-Based Drilling Fluid and its Application." Advanced Materials Research 476-478 (February 2012): 2304–10. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.2304.

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An high-performance water-based drilling fluid is a hot subject of research both at home and abroad in recent years. In this paper, the inhibition property and the influence of amino polyols AP-1 and aluminum polymer DLP-1 on drilling fluid properties were evaluated, on this basis, through the formula optimization, the high-performance water based drilling fluid was developed and and field applied. Both laboratory study and field application showed that aluminum polymer can reduce viscosity and filtration rate, and can effectively inhibit the hydration expansion of clay. Amino polyols had a little effect on the viscosity, gel strength and filtration of drilling fluid, but it had a good shale inhibition. This drilling fluid has good properties in rheology, filtration, inhibition and anti-contamination, with a satisfactory overall performance, which is helpful in solving wellbore instability that are due to unenven hydration or well developed micro fractures.

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Srungavarapu, Madhukar, Krishan Kumar Patidar, Akhilendra Kumar Pathak, and Ajay Mandal. "Performance studies of water-based drilling fluid for drilling through hydrate bearing sediments." Applied Clay Science 152 (February 2018): 211–20. http://dx.doi.org/10.1016/j.clay.2017.11.014.

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Salam, Massara, Nada S. Al-Zubaidi, and Asawer A. Al-Wasiti. "Lubricating Properties of Water-Based Drilling Fluid Improvement Using Lignite NPs as well as Their Effect on Rheological and Filtration Properties." Association of Arab Universities Journal of Engineering Sciences 26, no. 1 (March 31, 2019): 81–88. http://dx.doi.org/10.33261/jaaru.2019.26.1.011.

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In the process of drilling directional, extended-reach, and horizontal wells, the frictional forces between the drill string and the wellbore or casing can cause severe problems including excessive torque which is one of the most important problems during drilling oil and gas well. Drilling fluid plays an important role by reducing these frictional forces. In this research, an enhancement of lubricating properties of drilling fluids was fundamentally examined by adding Lignite NPs into the water-based drilling fluid. Lubricity, Rheology and filtration properties of water-based drilling fluid were measured at room temperature using OFITE EP and Lubricity Tester, OFITE Model 900 Viscometer, and OFITE Low-Pressure Filter Press, respectively. Lignite NPs were added at different concentrations (0.05 %, 0.1 %, 0.2 %, 0.5 %, and 1 %) by weight into water-based drilling fluid. Lignite NPs showed good reduction in COF of water-based drilling fluid. The enhancement was increased with increasing Lignite NPs concentrations; 23.68%, 35.52%, and 45.3 % reduction in COF were obtained by adding 0.2%, 0.5%, and 1% by weight Lignite NPs concentration, respectively.

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Ikram, Rabia, Badrul Mohamed Jan, Akhmal Sidek, and George Kenanakis. "Utilization of Eco-Friendly Waste Generated Nanomaterials in Water-Based Drilling Fluids; State of the Art Review." Materials 14, no. 15 (July 27, 2021): 4171. http://dx.doi.org/10.3390/ma14154171.

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An important aspect of hydrocarbon drilling is the usage of drilling fluids, which remove drill cuttings and stabilize the wellbore to provide better filtration. To stabilize these properties, several additives are used in drilling fluids that provide satisfactory rheological and filtration properties. However, commonly used additives are environmentally hazardous; when drilling fluids are disposed after drilling operations, they are discarded with the drill cuttings and additives into water sources and causes unwanted pollution. Therefore, these additives should be substituted with additives that are environmental friendly and provide superior performance. In this regard, biodegradable additives are required for future research. This review investigates the role of various bio-wastes as potential additives to be used in water-based drilling fluids. Furthermore, utilization of these waste-derived nanomaterials is summarized for rheology and lubricity tests. Finally, sufficient rheological and filtration examinations were carried out on water-based drilling fluids to evaluate the effect of wastes as additives on the performance of drilling fluids.

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Li, Hongjiang. "Development and Application of a Novel Green Water-Based Drilling Fluid." Environmental and Earth Sciences Research Journal 8, no. 1 (March 31, 2021): 61–64. http://dx.doi.org/10.18280/eesrj.080107.

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In response to the technical and environmental protection requirements of water-based drilling fluids, this study independently developed a series of green supporting treatment agents for water-based drilling fluids such as the green loss reducer HB-1, green inhibitor HB-2, and green lubricant HB-3, etc., and proposed a green water-based drilling fluid system (HBDF) with good comprehensive performance. The proposed system has a heat resistance of 150°C, a HTHP (high temperature and high pressure) filtrate loss of 12 mL, a biological toxicity EC50 value greater than 105 mg/L, and a biodegradability BOD5/CODCr value of 16.2%. Now the developed HBDF system has been applied in more than 10 wells in SL oilfield, and the field application results show that the proposed HBDF system has stable rheological and filtrate loss performance, good anti-pollution ability, and easy and simple maintenance operations; after drilling, the biological toxicity of the drilling fluids can meet the environmental protection requirements, which has provided a technical reference for the research of green drilling fluids and the green development of SL Oilfield.

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Wu, Jian, and Rong Di Han. "Wear of Uncoated HSS Tools in Drilling Difficult-to-Machine Materials with Water Vapor as Coolant and Lubricant." Advanced Materials Research 189-193 (February 2011): 3213–17. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.3213.

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Drilling is a semi-enclosed cutting process. Drilling of difficult-to-machine materials generates thermal/frictional damage at the cutting edges of drill bit and decreases the life. In this paper, a new cooling and lubricating technique in drilling difficult-to-machine materials is developed to improve the life of drill bit. For this study, a water vapor generator and feeding system is developed. Comparative experiments are performed for various difficult-to-machine materials under the conditions of oil water emulsion, water vapor as coolant and lubricant and dry drilling, respectively. The effectiveness of water vapor on the basis of drill bit wear is studied. Experimental results show that with water vapor as coolant and lubricant the flank wear is reduced by 45-80% and 10-15% in comparison with dry drilling and oil water emulsion, respectively.

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Karmadi, Ketut Agus, I. Wayan Redana, I. Nengah Simpen, Mawiti Infantri, and Bambang Soenarto. "DRILLING GROUNDWATER FOR RAW WATER IN SEMBIRAN VILLAGE,TEJAKULA DISTRICTS, BULELENG REGENCY." International Journal of Engineering and Emerging Technology 5, no. 1 (July 27, 2020): 24. http://dx.doi.org/10.24843/ijeet.2020.v05.i01.p14.

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ABSTRACT- Water is an absolute necessity that must be met, both for drinking water and for irrigation. An alternative to meet the water needs other than rainwater or surface water, is by taking underground water by drilling deep wells. Sembiran Village is a village located in Tejakula District, Buleleng Regency, the village is a dry area that requires water, both for drinking water and for agriculture. Location of groundwater drilling including Tejakula groundwater basin. In order to achieve the above objectives, an effective and efficient groundwater drilling technique should be carried out considering that the area geologically has rocks dominated by volcanic lava rock which are the products of Mount Agung and Mount Buyan Beratan Purba. The method of drilling groundwater is carried out in stages starting from drilling a Pilot Hole with a diameter of 6 to 64 meters, followed by an enlargement of 8 ", 10" to 12 "drill holes to a depth of 64 meters. In the field of drilling work the Hydrolic Rotary System Method, Direct Circulation Rotary Drilling is used and for the removal of cutting / dirt mud Fludia is used. The equipment used for drilling is rotary / skid mounted drilling machines with a capacity of up to ± 150.0-200.0 meters, equipped with equipment such as: mud pumps, a series of equipment that cannot be separated from one another. For well logging an Electrical logger is used for geophysical wellbore investigations. For the work of washing wells using compressor and other supporting equipment. Pumping the test uses a submersible pump that has a minimum discharge capability of 10 lt / sec and a maximum of 20 lt / sec. The results of direct observations and measurements of the physical parameters of the Sembiran Village Drilling Well (SEM-5) contain TDS = 219.; PH = 7.0. Chemically, Iron (Fe) = 0.001 mg/ltr; Arsenic (Ar) = 0.067 mg/ltr; Availability (CACO3) = 56.4 mg/ltr; Chloride (Cl-) = 91.6 mg/ltr; Nitrate (N) = 0.013 mg/ltr; Sulfate (SiO4) = 1.88 mg); Lead (Pb) = 0 mg/ltr; organic matter (KMnO4) = 0.34 mg/ltr, so the Drilling wells (SEM-5) meet clean water quality standards based on the Regulation of the Minister of Health of the Republic of Indonesia Number 492 / Menkes / Per / IV / 2010. Discharge obtained from pumping test results at SEM-5 wells is 20.47 liters/sec with surface water level(swl) = 23.60 m, and the position of the pump is placed at 42 m from the ground surface.

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Alekseev, Evgeny. "Formation and treatment features of oil-fields waste water." E3S Web of Conferences 281 (2021): 09014. http://dx.doi.org/10.1051/e3sconf/202128109014.

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The oil-fields development and operation can be associated with high water consumption and waste water emission. Most of the pollutants come from drilling and formation waters. At the same time, a significant proportion of solid dispersed pollutants is accounted for drilling waste water. Formation waters are the main source of oil contaminants. The technological processes of oil-field waste water treatment are based on gravity separation. In the context of increasing the environmental requirements for production activities, especially in the regions with low average annual temperatures and, accordingly, slow processes of ecosystems’ self-cleaning, the problem of environment reliable protection arises. Gravity separation methods cannot provide the required quality of waste water treatment. Modern achievements in the field of baromembrane technologies and high salinity of waste water make it most effective and expedient to use membrane and electrochemical methods of waste water treatment.

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43

Ismail, Abdul Razak, Wan Rosli Wan Sulaiman, Mohd Zaidi Jaafar, Issham Ismail, and Elisabet Sabu Hera. "Nanoparticles Performance as Fluid Loss Additives in Water Based Drilling Fluids." Materials Science Forum 864 (August 2016): 189–93. http://dx.doi.org/10.4028/www.scientific.net/msf.864.189.

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Nanoparticles are used to study the rheological characteristics of drilling fluids. Nanoparticles have high surface to volume ratio, therefore only small quantity is required to blend in the drilling fluid. This research evaluates the performance of nanosilica and multi walled carbon nanotubes (MWCNT) as fluid loss additives in water based drilling fluid with various nanoparticles concentration and temperature. The results show that plastic viscosity, yield point and gel strength of drilling fluid increases as the concentration of nanoparticles increased. Drilling fluid with nanosilica gives the highest filtrate loss of 12 ml and mudcake thickness of 10 inch at 1 g concentration at 300°F. However, drilling fluid with MWCNT shows a decreasing trend in fluid loss and mudcake thickness. The results also show that xanthan gum containing 1 g of MWCNT gives 4.9 ml fluid loss and mudcake thickness of 4 inch at 200°F. After aging, plastic viscosity, yield point and gel strength of mud containing nanoparticles decrease significantly especially for 1 g of nanosilica and 0.01 g MWCNT. Fluid loss and mudcake thickness increased when the mud is exposed to temperature above 250°F. The results showed that xanthan gum with MWCNT gives a better rheological performance.

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44

Klug, K. "Core Drillings with Polycrystalline Diamonds (PCD) - A New Drilling Technology without Water and Dust." Key Engineering Materials 250 (September 2003): 253–56. http://dx.doi.org/10.4028/www.scientific.net/kem.250.253.

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Yang, Li, Yun Peng An, Nan Tian, Jun Ma, and Jian Hua Yao. "Application Study of Phase Inversion for Drilling Fluid in Well Lianhua 000-X2#." Advanced Materials Research 524-527 (May 2012): 1153–56. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.1153.

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In order to reduce the flow resistance of a water-based drilling fluid, emulsifiers tend to be added into the drilling fluid mixed with oil at the same time. However, inappropriate proportion or oil-based pipe free agent with low HLB value could easily trigger the phase inversion of the drilling fluid, causing its stability loss or even water–solid separation. Therefore, starting from the root cause of the phase inversion, the surfactivity of solid-phase materials in the drilling fluid was changed from hydrophobicity to hydrophilicity by adding surfactants with high HLB value. Then its colloidal properties were reestablished by combining alkali diluting agent, and the drilling fluid with phase inversion of well Lianhua 000-X2# was treated indoors. The results of the field application in the well show that high-HLB surfactant can solve the phase inversion of a water-based drilling fluid properly, and that barite sedimentation and well control problem, caused by the phase inversion of the water-based drilling fluid with high-density, can be avoided.

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Tang, Liping, Zemin Huang, Xiaohua Zhu, Yunlai Zhou, and Bo Li. "Investigation of the mechanical response of a deep-water drilling riser to ocean currents and waves." Advances in Mechanical Engineering 11, no. 1 (January 2019): 168781401881833. http://dx.doi.org/10.1177/1687814018818334.

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The drilling riser is an important piece of equipment used to link the subsea wellhead with the drilling platform. Its operating environment is extremely complex because of the effects of ocean currents, which can cause riser overload, fatigue, leading to economic loss. Therefore, in order to improve design and prevent premature failure of drilling riser, it is important to research the mechanical response to ocean currents. The effects of tension ratio and platform deflection on the lateral displacement, bending moment, and the stress of the drilling riser are analyzed, under actual working conditions and shear flow. The results show that the bending moment and lateral displacement of the drilling riser decrease significantly and the stress of the riser increases with increasing tension ratio. There is an increase in the lateral displacement of the drilling riser and the bending moment at the lower end of the drilling riser, with an increase in the initial offset of the offshore drilling platform. However, the initial offset of the offshore drilling platform has little effect on the stress of the riser. Under shear flow conditions, the lateral displacement, bending moment, and stress initially increase, then decrease, and finally stabilize. These results can be used to improve the design of drilling riser.

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47

Tran, Chung Van. "SELECTING A PROPER TECHNOLOGICAL PROCESS USING REVERSE SYSTEM DRILLING METHOD FOR GROUNDWATER EXPLOITATION IN SOUTHERN VIETNAM." Science and Technology Development Journal 12, no. 6 (March 28, 2009): 73–83. http://dx.doi.org/10.32508/stdj.v12i6.2256.

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Reverse circulation drilling is one of the most effective drilling method on drilling of high capacity water supply wells in soft sedimentary aquifer. Technological process of reverse system are: - Counter flush drilling system - Suction drilling system. - Suction jet drilling system - Air-lift drilling system Based on drilling theory and reality of applying of RC drilling method, all the RC drilling systems will be analyzed for choosing the suitable system for Nambo area.

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48

Lou, Shengrui. "Analysis of the Combination of Periodic Water Injection and Drilling off in Zone A." E3S Web of Conferences 233 (2021): 01092. http://dx.doi.org/10.1051/e3sconf/202123301092.

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In recent years, the number of new wells has been increasing continuously, which has a large impact on production. During the drilling pass, the formation pressure has dropped greatly, the casing loss rate is high, and the water cut has increased, which affects the overall development situation of Zone A. In this paper, by studying the rule of index change in the process of drilling off and periodic water injection, the technology of combining drilling off and periodic water injection has been formed, and the application of the drilling off in Zone A has been completed.

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49

Tudorache, V. P., M. Minescu, and N. Ilias. "PARTICULARITIES RELATED TO DRILLING OFFSHORE WELLS IN AREAS WITH VERY DEEP WATER." Neft i gaz 117-118, no. 3-4 (April 15, 2020): 93–108. http://dx.doi.org/10.37878/2708-0080/2020.015.

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The article presents an analysis of the realities faced by the operators in the oil industry, but especially the operators in the exploitation of the risers. Oil industry operators are focusing on drilling offshore wells to very deep water depths, as there are significant oil and gas resources that ensure high production. This analysis refers to the establishment of limit conditions that occur during drilling operations. We call this complex of factors the mechanics of riser. The article also refers to establishing the way of working in accordance with the API recommendations in force and obtaining theoretical results for offshore drilling in deep water. These results are the starting point for simulation with the help of specialized software and obtaining results useful for the exploitation of risers in drilling wells in deep water. Drilling activity in deep water can only be done with dynamically positioned platforms, such as semisubmersibles platforms and drillship.

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Marimuthu, S., J. Dunleavey, Y. Liu, B. Smith, A. Kiely, and M. Antar. "Water-jet guided laser drilling of SiC reinforced aluminium metal matrix composites." Journal of Composite Materials 53, no. 26-27 (May 2, 2019): 3787–96. http://dx.doi.org/10.1177/0021998319848062.

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Laser drilling of monolithic materials like metals and alloys is a well-established process and used extensively in a wide range of applications in many sectors including aerospace, medical and automotive. However, conventional laser drilling of materials like metal matrix composites is challenging due to the differences in the chemical and physical properties of the hard ceramic reinforcement particles and the soft-metal matrix. The water-jet guided laser process has the potential to machine advanced materials such as an aluminium metal matrix composite reinforced with silicon carbide particles (Al MMC), with exceptional quality. The main objective of this research is to understand the material removal mechanism associated with water-jet guided laser drilling of Al MMCs and compare this with conventional laser drilling of Al MMC. Experimental results showed that the water-jet guided laser process is an excellent technique for drilling holes in composite materials like metal matrix composites. During water-jet guided laser drilling of Al MMC, the material has been removed by cold ablation, without leaving any residual melt layer within the bulk material. Both soft-matrix and hard-particles are removed by the same process of cold ablation, which is completely different to the conventional laser drilling process in which the solid SiC are ejected without melting, along with the molten aluminium.

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Journal articles on the topic 'Water drilling'

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