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Journal articles on the topic 'Oil wells - Drilling fluids'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Błaż, Sławomir, Grzegorz Zima, Bartłomiej Jasiński, and Marcin Kremieniewski. "Invert Drilling Fluids with High Internal Phase Content." Energies 14, no. 15 (2021): 4532. http://dx.doi.org/10.3390/en14154532.

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One of the most important tasks when drilling a borehole is to select the appropriate type of drilling fluid and adjust its properties to the borehole’s conditions. This ensures the safe and effective exploitation of the borehole. Many types of drilling fluids are used to drill holes for crude oil and natural gas. Most often, mainly due to cost and environmental constraints, water-based muds are used. On the other hand, invert drilling fluids are used for drilling holes in difficult geological conditions. The ratio of the oil phase to the water phase in invert drilling fluids the most common r

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2

Negmatova, Komila, Shodilbek Isakov, Nodir Kobilov, et al. "Effective Composite Chemical Reagents Based on Organic and Inorganic Ingredients for Drilling Fluids Used in the Process of Drilling Oil Wells." Advanced Materials Research 413 (December 2011): 544–47. http://dx.doi.org/10.4028/www.scientific.net/amr.413.544.

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In this article are shown the results of researches of development of effective composite chemical reagents based on organic and inorganic ingredients for drilling fluids, used for the drilling of oil wells. In this article will give comparative properties of local drilling fluids compared with drilling fluids used in Russia, USA.

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3

Ali, Muhammad, Husna Hayati Jarni, Adnan Aftab, et al. "Nanomaterial-Based Drilling Fluids for Exploitation of Unconventional Reservoirs: A Review." Energies 13, no. 13 (2020): 3417. http://dx.doi.org/10.3390/en13133417.

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The world’s energy demand is steadily increasing where it has now become difficult for conventional hydrocarbon reservoir to meet levels of demand. Therefore, oil and gas companies are seeking novel ways to exploit and unlock the potential of unconventional resources. These resources include tight gas reservoirs, tight sandstone oil, oil and gas shales reservoirs, and high pressure high temperature (HPHT) wells. Drilling of HPHT wells and shale reservoirs has become more widespread in the global petroleum and natural gas industry. There is a current need to extend robust techniques beyond cost

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Gao, Dewei, Jiajun Xie, Shengming Huang, Shenyao Wu, Pengcheng Wu, and Weian Huang. "Research and Application of Evaluation Methods for Functional Characteristics of Oil-Based Drilling Fluid in Shale Gas Wells." Geofluids 2021 (March 16, 2021): 1–9. http://dx.doi.org/10.1155/2021/8814032.

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Intelligent unconventional reservoir optimal production control technology is a comprehensive technology, involving geology, reservoir simulation, and efficient drilling and completion. Efficient drilling and completion provides a flow channel for unconventional oil and gas exploitation and a wellbore with good integrity for reservoir transformation, which is an important link in the efficient development of unconventional oil and gas. The application of industry standard method to evaluate the performance of oil-based drilling fluid has the problem of poor correlation. It cannot reflect the d

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5

Leusheva, Ekaterina, Nataliia Brovkina, and Valentin Morenov. "Investigation of Non-Linear Rheological Characteristics of Barite-Free Drilling Fluids." Fluids 6, no. 9 (2021): 327. http://dx.doi.org/10.3390/fluids6090327.

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Drilling fluids play an important role in the construction of oil and gas wells. Furthermore, drilling of oil and gas wells at offshore fields is an even more complex task that requires application of specialized drilling muds, which are non-Newtonian and complex fluids. With regard to fluid properties, it is necessary to manage the equivalent circulation density because its high values can lead to fracture in the formation, loss of circulation and wellbore instability. Thus, rheology of the used drilling mud has a significant impact on the equivalent circulation density. The aim of the presen

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6

Lan, Pixiang, Kyriaki Polychronopoulou, Larry L. Iaccino, Xiaoying Bao, and Andreas A. Polycarpou. "Elevated-Temperature and -Pressure Tribology of Drilling Fluids Used in Oil and Gas Extended-Reach-Drilling Applications." SPE Journal 23, no. 06 (2018): 2339–50. http://dx.doi.org/10.2118/191380-pa.

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Summary Extended-reach-drilling (ERD) wells are expensive and challenging; however, in special situations, compared with conventional drilling, ERD wells are more environmentally friendly and cost-effective. Application of drilling fluids with good lubrication for ERD is one of the most important methods to facilitate longer total depth (TD) of the wells. To better simulate the elevated-temperature environment in the borehole, this study proposes a method to perform tribological studies of drilling fluids at temperatures higher than 100°C by conducting experiments in a high-chamber-pressure en

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Sun, Yu Xue, Yu Ning Xie, and Chang Xiao. "MEG and its Application in Drilling Fluid." Advanced Materials Research 287-290 (July 2011): 2088–93. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2088.

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Recently, oil-based drilling fluids are used mainly in horizontal wells, which are highly cost and have a poor performance to carry cuttings and may result in environmental problems because of the ineffective dispose of drilling waste. Therefore, a study is commenced to develop a water-based drilling fluid system (MEG drilling fluid system) that can satisfy the needs of horizontal well. The study begins with the molecular structure and properties of monomers about MEG. Then it selected the treatment agent which has a good compatibility with MEG, and confirms a best formula of MEG drilling flui

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8

Mohamed, Abdelmjeed, Salem Basfar, Salaheldin Elkatatny, and Abdulaziz Al-Majed. "Prevention of Barite Sag in Oil-Based Drilling Fluids Using a Mixture of Barite and Ilmenite as Weighting Material." Sustainability 11, no. 20 (2019): 5617. http://dx.doi.org/10.3390/su11205617.

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Drilling high-pressure high-temperature (HPHT) wells requires a special fluid formulation that is capable of controlling the high pressure and is stable under the high downhole temperature. Barite-weighted fluids are common for such purpose because of the good properties of barite, its low cost, and its availability. However, solids settlement is a major problem encountered with this type of fluids, especially at elevated downhole temperatures. This phenomenon is known as barite sag, and it is encountered in vertical and directional wells under static or dynamic conditions leading to serious w

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9

Alwassiti, Asawer A., Mayssaa Ali AL-Bidry, and Khalid Mohammed. "Experimental study of Zubair shale stability of east Baghdad oil field using different additives in water based mud." Journal of Petroleum Exploration and Production Technology 10, no. 3 (2019): 1215–25. http://dx.doi.org/10.1007/s13202-019-00820-4.

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AbstractShale formation is represented as one of the challenge formations during drilling wells because it is a strong potential for wellbore instability. Zubair formation in Iraqi oil fields (East Baghdad) is located at a depth from 3044.3 to 3444 m. It is considered as one of the most problematic formations through drilling wells in East Baghdad. Most problems of Zubair shale are swelling, sloughing, caving, cementing problem and casing landing problem caused by the interaction of drilling fluid with the formation. An attempt to solve the cause of these problems has been adapted in this pape

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10

Murtaza, Mobeen, Sulaiman A. Alarifi, Muhammad Shahzad Kamal, Sagheer A. Onaizi, Mohammed Al-Ajmi, and Mohamed Mahmoud. "Experimental Investigation of the Rheological Behavior of an Oil-Based Drilling Fluid with Rheology Modifier and Oil Wetter Additives." Molecules 26, no. 16 (2021): 4877. http://dx.doi.org/10.3390/molecules26164877.

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Drilling issues such as shale hydration, high-temperature tolerance, torque and drag are often resolved by applying an appropriate drilling fluid formulation. Oil-based drilling fluid (OBDF) formulations are usually composed of emulsifiers, lime, brine, viscosifier, fluid loss controller and weighting agent. These additives sometimes outperform in extended exposure to high pressure high temperature (HPHT) conditions encountered in deep wells, resulting in weighting material segregation, high fluid loss, poor rheology and poor emulsion stability. In this study, two additives, oil wetter and rhe

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11

Liu, Jingping, Zhiwen Dai, Ke Xu, et al. "Water-Based Drilling Fluid Containing Bentonite/Poly(Sodium 4-Styrenesulfonate) Composite for Ultrahigh-Temperature Ultradeep Drilling and Its Field Performance." SPE Journal 25, no. 03 (2020): 1193–203. http://dx.doi.org/10.2118/199362-pa.

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Summary The rapidly increasing global oil/gas demand and gradual depletion of shallow reservoirs require the development of deep oil/gas reservoirs and geothermal reservoirs. However, deep drilling suffers from drilling-fluid failures under ultrahigh temperature, which cause serious accidents such as wellbore collapse, stuck pipe, and even blowouts. In this study, we revealed the role of polymeric additives in improving the ultrahigh-temperature tolerance of bentonite-based drilling fluids, aiming to provide practical and efficient solutions to the failure of drilling fluids in severe conditio

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12

Souto, Carlos Magno Rocha Almeida, Danielly Vieira Lucena, Clarice Oliveira Da Rocha, Maria Eduarda Da Silva Barbosa, and Syane Marcelle Miranda. "Desempenho reológico e de filtração de fluidos de perfuração base óleo preparados com argilas bentoníticas provenientes do município de Boa Vista-PB." Revista Principia - Divulgação Científica e Tecnológica do IFPB 1, no. 51 (2020): 22. http://dx.doi.org/10.18265/1517-0306a2020v1n51p22-29.

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<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p>Bentonite clays are an essential input to the production of drilling fluids. One of the main consumer segments of bentonite clay is the oil industry, where it is used as a thixotropic agent in drilling fluids in oil wells, attributing to the fluids physical characteristics and specific chemical and rheological properties. According to Leal (2012), the physico-chemical and rheological properties must be carefully controlled so that the fluid can perform all its functions, such as cooling the

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13

Glibovytska, Nataliia, and Lesya Plaksiy. "The drilling solution components’ impact on the environment and directions of its reduction." Biolohichni systemy 12, no. 1 (2020): 52–57. http://dx.doi.org/10.31861/biosystems2020.01.052.

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The problem of the oil wells operation influence on the environmental ecological state is considered. The technical and biological aspects of the impact of drilling solution components used in the process of oil production on the biotic and abiotic environment are analyzed. The methods of preserving the cleanliness of reservoirs and soil during the wells operations and preventing pollutants from entering the environment are described. Possible effects of the toxic compounds of the drilling fluid on living organisms, in particular plants, have been identified. The components of drilling fluids

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14

Liu, Tianle, Ekaterina Leusheva, Valentin Morenov, et al. "Influence of Polymer Reagents in the Drilling Fluids on the Efficiency of Deviated and Horizontal Wells Drilling." Energies 13, no. 18 (2020): 4704. http://dx.doi.org/10.3390/en13184704.

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Improving the efficiency of well drilling process in a reservoir is directly related to subsequent well flow rates. Drilling of deviated and horizontal wells is often accompanied by an increase in pressure losses due to flow resistance caused by small size of the annular space. An important role in such conditions is played by the quality of borehole cleaning and transport capacity of drilling fluid, which is directly related to the rheological parameters of the drilling fluid. The main viscosifiers in modern drilling fluids are polymer reagents. They can be of various origin and structure, wh

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15

Gozalpour, Fathollah, Ali Danesh, Adrian Christopher Todd, and Bahman Tohidi. "Application of Tracers in Oil-Based Mud for Obtaining High-Quality Fluid Composition in Lean Gas/Condensate Reservoirs." SPE Reservoir Evaluation & Engineering 10, no. 01 (2007): 5–11. http://dx.doi.org/10.2118/94067-pa.

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Summary Oil-based drilling fluids are used extensively in drilling activities worldwide. During the drilling process, because of overbalance pressure in the mud column, the filtrate of oil-based mud invades the formation. This hydrocarbon-based filtrate mixes with the formation hydrocarbon, which can cause major difficulties in obtaining a representative reservoir-fluid sample. Despite the recent improvements in sampling, obtaining a contamination-free formation fluid is a major challenge, particularly in openhole wells. Depending on the type and conditions of the reservoir, the oil-based-mud

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16

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

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17

Negmatova, K. S., S. S. Negmatov, Y. A. Salimsakov, J. N. Negmatov, and Sh S. Isakov. "Composite Powder Materials for Stabilization of Drilling Fluids Which Provides High Durability of Cutting Instruments Dolot Used in Process of Drilling Oil Wells." Advanced Materials Research 616-618 (December 2012): 1762–65. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.1762.

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The results of studies of the structure and properties of a viscous gossypol resin and effective mechanism of formation of powder composite soluble chemicals on its base for stabilization of the drilling fluids used in drilling oil wells are shown in this work.

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18

Jondahl, Morten Hansen, and Håkon Viumdal. "Developing ultrasonic soft sensors to measure rheological properties of non-Newtonian drilling fluids." tm - Technisches Messen 86, no. 12 (2019): 744–57. http://dx.doi.org/10.1515/teme-2019-0039.

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AbstractSurveillance of the rheological properties of drilling fluids is crucial when drilling oil wells. The prevailing standard is lab analysis. The need for automated real-time measurements is, however, clear.Ultrasonic measurements in non-Newtonian fluids have been shown to exhibit a non-linear relationship between the acoustic attenuation and rheological properties of the fluids. In this paper, three different fluid systems are examined. They are diluted to give a total of 33 fluid sets and their ultrasonic and rheological properties are measured. Machine learning models are applied to de

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19

Arbad, Nachiket, and Catalin Teodoriu. "A Review of Recent Research on Contamination of Oil Well Cement with Oil-based Drilling Fluid and the Need of New and Accurate Correlations." ChemEngineering 4, no. 2 (2020): 28. http://dx.doi.org/10.3390/chemengineering4020028.

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Drilling fluids and oil well cement are important well barriers. Their compatibility affects the long-term integrity of the well. The mixing of drilling fluid with the oil well cement causes contamination of oil well cement. If the contamination is due to diesel/oil-based drilling fluid (OBF) it adversely affects the rheological and mechanical properties of oil well cement—in other words, the long-term integrity of the well. An initial study on OBF contamination of oil well cement was carried out two decades ago. In recent years, several research projects were carried out on the same topic to

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20

Li, Shuanggui, Sheng Fan, Jiaxue Li, Yingting Li, Biao Qi, and Junwei Fan. "Capacity Limitations of brine Contamination on High Density Oil-Based Drilling Fluid." E3S Web of Conferences 290 (2021): 01002. http://dx.doi.org/10.1051/e3sconf/202129001002.

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Aimed on the problem that the Drilling fluids were easily intruded by the saline water in high-pressure salt-gypsum formations, and the properties of the drilling fluid were damaged and accidents easily occur. The mechanism of drilling fluid contamination by the formation brine was analyzed and the capacity limits of the contamination were found out. The results show that small amount of brine invasion causes emulsification while large amount of brine invasion lead to demulsification. Two capacity limitations were proposed. The first limitation is 10% of saline water concentration, below which

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21

Błaż, Sławomir. "Odwracalne ciecze emulsyjne o wysokim stężeniu fazy wewnętrznej (HIPR)." Nafta-Gaz 77, no. 3 (2021): 175–86. http://dx.doi.org/10.18668/ng.2021.03.04.

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Invert muds are the most commonly used oil-based drilling muds. The oil to water phase ratio in invert drilling muds ranges from 65/35 up to 90/10, with the most common ones ranging from 70/30 to 80/20. At these oil to water phase ratios, the drilling mud is characterized with high stability and appropriate rheological and structural parameters allowing to adjust drilling mud density in a wide range. One of the disadvantages of invert muds is their cost (due to oil content) and environmental problems associated with waste and management of oily drill cuttings. Taking into account the propertie

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22

Dihingia, Mritunjoy. "Review on Applications of Non-ionic and Anionic Surfactants in Water Based Drilling Fluids." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (2021): 2054–60. http://dx.doi.org/10.22214/ijraset.2021.36808.

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In recent times, with the advent of exploSration activities in deeper hydrocarbon reserves, drilling of wells in HPHT conditions is one of the most studied field in the upstream oil and gas industry. Water-based fluids are the most common and frequently used drilling fluids oil and gas well construction. Although, water-based drilling fluids are environment friendly and relatively in-expensive, it is often associated with many problems when used in HPHT conditions. In order to overcome these problems in such viable conditions, modified surfactants are used with the mud to counteract the proble

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23

Okoro, Emmanuel E., Sandra Iwuajoku, and Samuel E. Sanni. "Performance Evaluation of Biodiesel Produced from Waste Tire Pyrolytic Oil as a Lubricant Additive in Oil Drilling Systems." Recycling 5, no. 4 (2020): 29. http://dx.doi.org/10.3390/recycling5040029.

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This study investigates the performance of biodiesel produced from distilled waste tire pyrolytic oil through transesterification as a lubricant additive for aqueous drilling fluid systems. Aqueous-based drilling fluids have a high coefficient of friction as compared to oil-based drilling fluids. The inclusion of a biodiesel additive was for smooth application/operation. The friction-reducing physicochemical properties of the additive were analyzed and compared with the guidelinesof the United States specification (ASTM Standard) and the European specification (EN Standard). The chemical struc

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24

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 (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 w

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25

Nutskova, M. V., K. S. Kupavykh, D. A. Sidorov, and V. A. Lundaev. "Research of oil-based drilling fluids to improve the quality of wells completion." IOP Conference Series: Materials Science and Engineering 666 (December 7, 2019): 012065. http://dx.doi.org/10.1088/1757-899x/666/1/012065.

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26

Almahdawi, Dr Faleh H. M., Dr Mohammad N. Hussain, and Haider Salim Jasim. "Plum Tree Gums as Local Alternatives for Foreign Drilling Fluid Materials." Journal of Petroleum Research and Studies 7, no. 3 (2021): 51–65. http://dx.doi.org/10.52716/jprs.v7i3.158.

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A few years ago oil well drilling cost increased due to using modern technique such as equipment and materials that are used by specialist companies so studies and researches were required to decrease these costs. In this study we tried to find local alternatives for foreign drilling fluid materials that are aimed to decrease oil well drilling cost although the cost of drilling fluid materials reach to 30 % of total materials cost of drilling oil well. In the first part of this study seven local materials and it's tested under API Specification 13A for Drilling Fluids Materials were inve

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27

Parfiryev, V. A., Yu V. Vaganov, and N. N. Zakirov. "Invert-emulsion drilling fluids for exposing Hamakin horizon of the Vostochno-Alinskoye oil and gas condensate field." Oil and Gas Studies, no. 3 (July 8, 2020): 44–53. http://dx.doi.org/10.31660/0445-0108-2020-3-44-53.

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The article is devoted to an analysis of the oil well construction in the fields of the Talakan group of Eastern Siberia. The low quality of the construction of oil wells is explained based on geological structure of the reservoir and the conditions of its formation, particulary, the complications encountered during drilling are given. Based on the analysis, it was found that the use of traditional monosalt and salt-saturated drilling muds is not effective enough to simultaneously solve the problems of exposing intervals of salt deposits and high-quality primary exposing of reservoirs. Based o

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Jha*, Dr Praveen Kumar, Dr Vinod Kumar Saxena, Prof Suresh Kumar Yatirajula, and Dr Ayanagounder Kumar. "Impact of Natural Polymer (Xanthan Gum) and Bentonite Clay on the Development of Oil-In-Water (O/W) Emulsion Drilling Fluids." International Journal of Innovative Technology and Exploring Engineering 10, no. 10 (2021): 129–36. http://dx.doi.org/10.35940/ijitee.i9344.08101021.

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Drilling fluid plays the same role in oil and gas well drilling as the blood in human body. A new type of oil-in-water (o/w) emulsion drilling fluid has been developed using diesel oil as dispersed phase, brine water as continuous phase, xanthan gum as viscosity modifier and clay as emulsion stabilizer and filtration controlling agent. Initially, standard recommended techniques were opted to detect the rheological properties of the emulsions. The fluids have also shown stable properties upto 70°C after aging for 24 h. As drilling fluids encounter a lot of variation in temperature and pressure

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29

ROGOV, Evgenii. "Study of the well near-bottomhole zone permeability during treatment by process fluids." Journal of Mining Institute 242 (May 25, 2020): 169. http://dx.doi.org/10.31897/pmi.2020.2.169.

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In the process of drilling-in productive horizons, several irreversible physical and chemical processes take place in the near-wellbore zone of the formation: stress state of the rocks changes, penetration of the filtrate and solid phase, as well as drilling mud into the reservoir, and swelling of clay particles of intergranular cementing material are observed. As a result, permeability of productive horizon is significantly reduced and, consequently, potential inflow of oil or gas from formation is excluded. An equally serious problem exists during well servicing and workover, when the use of

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30

Cardoso, Mirtys Allamana Ferreira, Heber Sivini Ferreira, Isabelle Albuquerque da Silva, Heber Carlos Ferreira, and Gelmires Araújo Neves. "Development of Organoclays for Use in Oil-Based Drilling Fluids." Materials Science Forum 727-728 (August 2012): 1557–62. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.1557.

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The organoclays are derived from bentonite clays treated in aqueous solution with surfactants, which are incorporated into the interlayer surface of clays, covering them with an organic layer; so, the naturally hydrophilic clay becomes hydrophobic. This paper proposes a study to find the dispersant media (diesel, paraffin or ester) which is more suitable for use in fluids, using the bentonite clay Cloisite Na +, treated with ionic surfactants Praepagen HY and Praepagen WB. The organoclay obtained was characterized by X-ray diffraction, and we measured the apparent viscosity and plastic dispers

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Almahdawi, Dr Faleh H. M., Dr Mohammed N. Husain Al Hasani, and Haider Salem Jasim. "Tragacanth Gum As Local Alternatives To Improve Viscosity And Filtration Control." Journal of Petroleum Research and Studies 8, no. 4 (2021): 1–15. http://dx.doi.org/10.52716/jprs.v8i4.259.

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Today oil industry faces a lot of problems and lost money during drilling and completion operation, so that the studies and researches must including the ways and solutions that lead to decrease the costs. In this research we tried to find local alternative material instead of foreign drilling fluid materials that is used in drilling fluids and will help to save a lot of money by decrease oil well drilling cost because of the high cost of drilling fluid materials which represent now about 30 % of total cost for drilling oil well.  The local alternatives is Ore polymers ( plant orig

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Xu, Jiafu, Evren Ozbayoglu, Stefan Z. Miska, Mengjiao Yu, and Nicholas Takach. "Cuttings Transport with Foam in Highly Inclined Wells at Simulated Downhole Conditions / Transport urobku wiertniczego przy użyciu piany w silnie nachylonych otworach w symulowanych warunkach w otworze." Archives of Mining Sciences 58, no. 2 (2013): 481–94. http://dx.doi.org/10.2478/amsc-2013-0032.

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Along with the rapidly growing demand and development activities in unconventional resources, is the growth of environmental awareness and concerns among the public. Foam, as an alternative to traditional drilling fluid, is gaining more and more momentum in the drilling industry. Drilling with foam can minimize formation damage, water usage, and drag and torque. Foam also costs less and leaves a much smaller environmental footprint than other commonly used drilling fluids, such as synthetic oil-based fluids, when developing vulnerable formations such as shale gas. As drilling in horizontal and

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Liu, Fei, and Yan Ling Wang. "Synthesis and Performance Study of the Nanomaterial Used to Stabilize the Reversible Invert Emulsion Drilling Fluid." Key Engineering Materials 744 (July 2017): 498–505. http://dx.doi.org/10.4028/www.scientific.net/kem.744.498.

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The reversible invert emulsion drilling fluids can achieve performance of oil based drilling fluid and solve the disadvantages associated by the oil based drilling fluid. This reversible invert emulsion drilling fluid can also focus the advantages of both oil based and water based drilling fluids. The surfactant emulsifier is the currently reported emulsifier used in the reversible invert emulsion. The stability of the reversible invert emulsion drilling fluid is very poor that can be known from the low emulsion breaking voltage. The dosage of the surfactant emulsifier is so much that it can i

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34

Ye, Yan, Wen Hua An, Da Yin, Qing Wen Zhang, Lei Li, and Ling Ling Ren. "Application of Ultrafine Weighting Materials in High-Density Oil-Based Drilling Fluid Technology." Materials Science Forum 814 (March 2015): 338–44. http://dx.doi.org/10.4028/www.scientific.net/msf.814.338.

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High-density oil-based drilling fluid already was considered as one of the most effective technologies during the HTHP Ultra-deep well drilling process. The weighting materials sag such as barite sag, however, always occurred because of the density contrast between the base oil and the weighting material, and hence sag can result in excessive torque, lost circulation and many other problems. This study applied three kinds of ultra-fine powder (particle size≤4μm), which are new weighting materials, to replace the common API barite (particle size10~70μm). The different kinds of high-density oil-

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Santos, Nara Brandão Costa, Flávia Marques Fagundes, Fábio de Oliveira Arouca, and João Jorge Ribeiro Damasceno. "Sedimentation of solids in drilling fluids used in oil well drilling operations." Journal of Petroleum Science and Engineering 162 (March 2018): 137–42. http://dx.doi.org/10.1016/j.petrol.2017.12.026.

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Huang, Xian Bin, and Guan Cheng Jiang. "Hydrogen Bonds-Enhanced Organoclay-Free Oil Based Drilling Fluid System." Materials Science Forum 890 (March 2017): 227–34. http://dx.doi.org/10.4028/www.scientific.net/msf.890.227.

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Conventional oil based drilling fluids or muds (OBMs) using organophilic clay as viscosifier and rheological control agent cannot carry drill cuttings and suspend weighting materials effectively in oil well drilling process. It also causes excessive viscosity of drilling fluids, which lowers the rate of penetration. For the sake of solving these problems, in this study, hydrogen bonds-enhanced organoclay-free oil based drilling fluid was proposed. Firstly key additives (emulsifier, filter reducer) for OBMs with highly electronegative groups that might form hydrogen bonds were synthesized. In a

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Humberto Escobar, Freddy, Javier-Andrés Martínez, and Luis-Fernando Bonilla. "Transient pressure analysis for vertical wells with spherical power-law flow." CT&F - Ciencia, Tecnología y Futuro 5, no. 1 (2012): 19–36. http://dx.doi.org/10.29047/01225383.216.

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Heavy oil is considered nowadays as one of the unconventional reservoirs of main interest in the oil industry. Some of them display non-Newtonian pseudoplastic behavior which mathematical modeling differs from the conventional case and, therefore, the flow regimes display some particular behaviors.Fracturing fluids, foams, some fluids for Enhanced Oil Recovery (EOR) and drilling muds can also fall into this category. The spherical/hemispherical flow mainly caused by partial completion/penetration deserves a particular treatment for pseudoplastic flow. A single research for this case was found

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Radonjic, Mileva, and Arome Oyibo. "Comparative experimental evaluation of drilling fluid contamination on shear bond strength at wellbore cement interfaces." World Journal of Engineering 11, no. 6 (2014): 597–604. http://dx.doi.org/10.1260/1708-5284.11.6.597.

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Wellbore cement has been used to provide well integrity through zonal isolation in oil and gas wells as well as geothermal wells. Failures of wellbore cement result from either or both: inadequate cleaning of the wellbore and inappropriate cement slurry design for a given field/operational application. Inadequate cementing can result in creation of fractures and microannuli, through which produced fluids can migrate to the surface, leading to environmental and economic issues such as sustained casing pressure, contamination of fresh water aquifers and, in some cases, well blowout. To achieve p

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Ivanova, Tatiana N., and Iwona Żabińska. "Modern Methods of Elimination of Lost Circulation in Directional Wells." Management Systems in Production Engineering 29, no. 1 (2020): 65–74. http://dx.doi.org/10.2478/mspe-2021-0009.

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Abstract Losses of drilling mud and other fluids is the one of the major types of drilling troubles. Annual time losses for their elimination by oil and gas companies are huge. The factors, influencing the mud losses and regulating the direction of the further works, can be divided into two groups: geological and technological. Conducted studies on the use of an insulating composition based on chromium acetate made it possible to identify: the use of the insulation composition on the chrome acetate base allows considerable reduction of time required to eliminate disastrous circulation loss wit

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Wang, Ping Quan, Zhi Wei Qian, Yang Bai, Zai Jun Li, and Shuang Meng. "Study on Harmless Technology of Waste Oil-Based Drilling Fluid." Advanced Materials Research 524-527 (May 2012): 1581–86. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.1581.

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Oil-based drilling fluids are essential for challenging drilling operations. However oil-based drilling fluid after using for the well site and the surrounding environment also poses a serious negative effect. Therefore, for studying on harmless technology of waste oil-based drilling fluid in this paper. Base on the tradition treatment technology for waste oil-based drilling fluid, by the preferred for treatment chemicals, improved the experimental methods and conditions, achieved some research results. Added 8.5g/L xylene/ispropanol complex demulsifier under the 50°C, pH value of 4 conditions

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Papp, R., and S. J. Fisher. "DRILLING FLUIDS AND THEIR ENVIRONMENTAL MANAGEMENT: CHARACTERISATION OF BASE FLUIDS AND THE INTRODUCTION OF QUALITY CONTROL PROCEDURES." APPEA Journal 39, no. 1 (1999): 628. http://dx.doi.org/10.1071/aj98042.

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Since the early 1990s, a variety of invert emulsion base fluids have been introduced into the drilling fluid market. The chemical composition of these fluids has evolved with the focus on minimising the environmental impact of discharged cuttings that contain adhered drilling fluids.The trend within Australia and other regions in which drilling fluids are extensively used, is that the life span of these fluids has become increasingly shorter, due to environmental impact pressures from the regulatory authorities in the North Sea and Australia, as well as public perception within these regions.T

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Rahmati, Abdol Samad, and Afshin Tatar. "Application of Radial Basis Function (RBF) neural networks to estimate oil field drilling fluid density at elevated pressures and temperatures." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 74 (2019): 50. http://dx.doi.org/10.2516/ogst/2019021.

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The petroleum industry today has no choice, but to explore new and ever more deep and challenging pay zones as the most of the shallow oil and gas producing pay zones are severely depleted during the years of production. For improved drilling fluid performance in deep and hostile environment wells, accurate knowledge about the fluid density at high temperature and pressure conditions is an essential step. To achieve this mission, this study is aiming at developing a new computer-based tool is designed and applied for accurate calculation of drilling fluid density at HPHT conditions. In order t

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Siddig, Osama, Saad Al-Afnan, Salaheldin Elkatatny, and Mohamed Bahgat. "Novel Cake Washer for Removing Oil-Based Calcium Carbonate Filter Cake in Horizontal Wells." Sustainability 12, no. 8 (2020): 3427. http://dx.doi.org/10.3390/su12083427.

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An impermeable layer “filter cake” usually forms during the overbalanced drilling technique. Even though it helps in protecting the formation from a further invasion of drilling fluids, the removal of this layer is essential for a proper cement job and to avoid any reduction in wellbore deliverability. The design of the removal process is complicated and depends on the filter cake composition and homogeneity. This paper presents an experimental evaluation on the usage of a novel cake washer (NCW) in the removal of a filter cake formed by an invert emulsion oil-based drilling fluid that contain

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Wiśniowski, Rafał, Krzysztof Skrzypaszek, and Tomasz Małachowski. "Selection of a Suitable Rheological Model for Drilling Fluid Using Applied Numerical Methods." Energies 13, no. 12 (2020): 3192. http://dx.doi.org/10.3390/en13123192.

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The accuracy of fitting the rheological model to the properties of actual drilling fluid minimises the errors of the calculated technological parameters applied while drilling oil wells. This article presents the methodology of selecting the optimum drilling fluid rheological model. Apart from classical rheological models, i.e., the Newtonian, Bingham Plastic, Casson, Ostwald de Waele and Herschel–Bulkley models, it has been proposed to consider the Vom Berg and Hahn-Eyring models, which have not been applied to describe drilling fluids so far. In the process of determining rheological paramet

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Komilov, T. O., Е. Е. Sanetullaev, and Sh Kh Umedov. "Experimental Studies of Fluid Fluids Preventing Complications Arising in the Process of Drilling Oil and Gas Wells." Oil and Gas technologies 120, no. 1 (2019): 42–43. http://dx.doi.org/10.32935/1815-2600-2019-120-1-42-43.

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Li, Feng Xia, Guang Chen Jiang, Zheng Ku Wang, and Mao Rong Cui. "Natural Vegetable Gum Drilling and Completion Fluids System for Industrial Control and Application." Key Engineering Materials 467-469 (February 2011): 1345–50. http://dx.doi.org/10.4028/www.scientific.net/kem.467-469.1345.

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To simplify the operation for the oil and gas development for drill and complete the well in the petroleum industry, a natural vegetable gum drilling and completion fluids system is developed for the industrial control and application. As the system combines the advantage of the drilling fluid and completion fluid, it need not change the two different fluids during the operation, which is beneficial to the operation control. In addition, it can improve the implementation of the oil and gas exploration for industrial application. An extensive laboratory work for the high-temperature resistance

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Geng, Jiao Jiao, Jie Nian Yan, Wen Yi Chen, Chun Yao Peng, Jing Jie Zuo, and Xiao Lin Yan. "Low-Damage Drilling Fluid Technology Used in Jabung Oilfield, Indonesia." Advanced Materials Research 347-353 (October 2011): 1627–32. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1627.

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Formation damage is prone to occur during drilling into the formations with medium/high permeability in Jabung Oilfield, Indonesia. To prevent formation damage and enhance productivity of oil wells, a novel low-damage drilling fluid was developed on the basis of the modification of currently used KCl polymer drilling fluid using a special technology. By virtue of the synergistic effect of ideal packing agents and film-forming agents, a sealing layer with high pressure bearing capability can be formed on the rock surface of borehole, so as to prevent drilling fluids from invading into formation

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Escobar, Freddy-Humberto, Laura-Jimena Vega, and Luis-Fernando Bonilla. "Determination of well-drainage area for power-law fluids by transient pressure analysis." CT&F - Ciencia, Tecnología y Futuro 5, no. 1 (2012): 45–56. http://dx.doi.org/10.29047/01225383.214.

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Since conventional oil is almost depleted, oil companies are focusing their efforts on exploiting heavy oil reserves. A modern and practical technique using the pressure and pressure derivative, log-log plot for estimating the well-drainage area in closed and constant-pressure reservoirs, drained by a vertical well is presented by considering a non-Newtonian flow model for describing the fluid behavior. Several synthetic examples were presented for demonstration and verification purposes.Such fluids as heavy oil, fracturing fluids, some fluids used for Enhanced Oil Recovery (EOR) and drilling

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Hussein, Ahmed Flayyih, Abd Al Khalaq F. H., and Asswer A. AL Wassity. "Processing of Iraqi Attapulgite For Using as Drilling Muds: A Comparison Study." Association of Arab Universities Journal of Engineering Sciences 27, no. 4 (2021): 8–16. http://dx.doi.org/10.33261/https://doi.org/10.33261/jaaru.2020.27.4.002.

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Clay mineral processing is in charge on quality, quantity and functional properties of final produced clay. In this work, Iraqi attapulgite (Palygorskite) clay was processed with dry sieving, dispersing agent and wet sieving processes to make it suitable in oil and gas wells drilling fluids preparation. Yield of clay (quality) and yield of process (quantity) were taken as preferring criteria in choosing the proper process of Iraqi attapulgite clay preparation. XRD and FESEM tests were used for mineralogical and morphological identification respectively. OFITE viscometer was used to measure the

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Liu, Yonggui, Yang Zhang, Jing Yan, Tao Song, and Yongjun Xu. "Application of Thermal Resistant Gemini Surfactants in Highly Thixotropic Water-in-oil Drilling Fluid System." Open Chemistry 17, no. 1 (2019): 1435–41. http://dx.doi.org/10.1515/chem-2019-0157.

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AbstractTraditional water-in-oil drilling fluids are limited by their shear thinning behavior. In this article, we propose the synthesis of a thermal resistant quaternary ammonium salt gemini surfactant DQGE-I. This surfactant was synthesized using monomers such as N,N-dimethyl-1,3-propanediamine, organic acids and epichlorohydrin, as well as blocking groups such as N-vinylpyrrolidone (NVP). The prepared surfactant exhibited various advantages over traditional surfactants, including excellent thermal stability, good emulsifying and wetting capability. The use of these surfactants was shown to

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