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Articles de revues sur le sujet « Derricks »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 29 juillet 2024

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1

Zhang, Zhe, Jialin Tian, Chenghang Liu, and Changqing Xiong. "Study of fatigue characteristics of key welds of modular drilling derricks." CT&F - Ciencia, Tecnología y Futuro 13, no. 1 (2023): 75–85. http://dx.doi.org/10.29047/01225383.668.

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Driven by the gradual development of oil and natural gas resources, the global use of rigs and the number of wells rise steadily. Modular rigs play an important role in oil exploration because of their efficient transport, economy, technological advancement, and rig reliability. The derrick is a key part of the modular rig, and since many essential components in the derrick are welded, the fatigue life of the derrick weld is particularly relevant. In this paper, the modular rig is the object of the research, proposing the calculation formula of fatigue life of the key weld of the derrick. Using modular rig ZJ90D as an example, and combining the rig working conditions with the structural characteristics of the derrick, the key calculation parameters are obtained by numerical analysis. Thus, the life expectancy of the key weld is calculated according to the calculation formula of fatigue life presented herein. The research results have important reference significance and guiding value for the design and optimization of modular rig derricks.

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Mens, Yann. "Bagarre pour les derricks." Alternatives Économiques N° 394, no. 10 (2019): 62–63. http://dx.doi.org/10.3917/ae.394.0062.

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Soloviov, V. V., O. V. Mykhailovska, and I. A. Yermakova. "CONDITIONS OF A SINGLE INTAKE DESCENDING OF INTERMEDIATE CASING STRINGS OF AN EXCESSIVE WEIGHT COMPARED TO A DERRICK LOAD CAPACITY." ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 1, no. 50 (2018): 214–19. http://dx.doi.org/10.26906/znp.2018.50.1078.

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The way of the intermediate casing string descending is considered. It allows overcoming the limits of derrick load capacity through the weight transferring descending intermediate casing string on the cemented string that is based on the foundation. In particular, technology is developed where the weight of each additional string, as it builds-up, is equivalent to additional friction forces which arise in the enlarged area. Such a descent technology does not depend on the load capacity of the derrick load capacity, does not create loads on the basis of derricks as well as additional tensile loads in the string with an increase in its length. It is proved that if such a condition is met, all known restrictions for the descent of intermediate columns of any length in a single intake are removed. Authors determined descending casing string weight that is distributed over the previously installed and cemented string. It is suggested to distribute casing string weight on existing and cemented string.

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Xu, Xingping, Lei Wang, Guangdou Liu, and Xin Zhang. "Optimal design of dual derricks." International Journal of Modelling, Identification and Control 17, no. 1 (2012): 61. http://dx.doi.org/10.1504/ijmic.2012.048640.

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Tan, Zhengbo, Hao Chen, Fu Wan, Feilong Liao, Yuan Gao, and Can Cai. "Influence of Complex Load on the Strength and Reliability of Offshore Derrick by Using APDL and Python." Applied Sciences 12, no. 22 (2022): 11693. http://dx.doi.org/10.3390/app122211693.

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In an offshore operational environment, complex loads such as the hook load, stand load and wind load play a crucial role in the structural strength and reliability of the offshore derrick. Previous studies have mainly focused on the effect of a specific load on the strength of the derrick by using commercial software. Therefore, the influencing mechanism of each complex load on the strength and reliability of the offshore derrick is urgently necessary to explore. Not only is the strength numerical model of the JJ315/45-K typical derrick established and conducted via APDL (ANSYS Parametric Design Language), but also the stress–strength reliability simulation is explored and plotted using Python code and APDL. Furthermore, the influence and contribution of each load to the strength and reliability is determined. With the increase in hook load, the positions of maximum reliability risk appear in section II-1. With the increase in stand load or back wind load, the positions of maximum reliability risk appear in the bottom section. In addition, with the decrease in the columns’ height, the stress proportion of the hook load decreases by 73.5%, the stress proportion of the stand load increases by 22.6%, and the stress proportion of the back wind load changes slightly. When the wind speed is less than 20 m/s, the hook load mainly affects the minimum reliability index of the derrick. Moreover, when the wind speed is more than 20 m/s, the back wind load mainly affects the minimum reliability index of the derrick. This study provides a thorough explanation of the strength distribution law and the reliability of derricks under complex loads.

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Li, Chunbao, Hui Cao, Mengxin Han, Pengju Qin, and Xiaohui Liu. "Analytical Method for Geometric Nonlinear Problems Based on Offshore Derricks." Mathematics 9, no. 6 (2021): 610. http://dx.doi.org/10.3390/math9060610.

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The marine derrick sometimes operates under extreme weather conditions, especially wind; therefore, the buckling analysis of the components in the derrick is one of the critical contents of engineering safety research. This paper aimed to study the local stability of marine derrick and propose an analytical method for geometrically nonlinear problems. The rod in the derrick is simplified as a compression rod with simply supported ends, which is subjected to transverse uniform load. Considering the second-order effect, the differential equations were used to establish the deflection, rotation angle, and bending moment equations of the derrick rod under the lateral uniform load. This method was defined as a geometrically nonlinear analytical method. Moreover, the deflection deformation and stability of the derrick members were analyzed, and the practical calculation formula was obtained. The Ansys analysis results were compared with the calculation results in this paper.

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Morin-Allory, Ronan. "Chine-Soudan, une amitié à l'ombre des derricks." Outre-Terre 20, no. 3 (2007): 227. http://dx.doi.org/10.3917/oute.020.0227.

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Iman, Miftahul. "The Steel Truss Tower (Derricks) Structure Evaluation In Buckling Analysis." JUTEKS : Jurnal Teknik Sipil 5, no. 2 (2020): 120. http://dx.doi.org/10.32511/juteks.v5i2.735.

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Tarakan was an oil-producing city had been known since 1896 that were explored in first time in authorized by Bataavishe Petroleum Maatchapij (BPM). The derrick was a petroleum drilling facility that were performed in steel truss structure. The derrick prototype had been modeled in 3D truss by utilizing SAP2000. The models had been classified into 2 models: perfect and imperfect models. The imperfections denoted by the percentage of elements loses (IM20, IM24), and IM16). Buckling analysis consisted in linear and nonlinear analysis had been evaluated. The 3D solid model (Abaqus) also performed for single element buckling. The results showed that perfect derrick model satisfied the strength and stability requirement . The percentage of element loss reduced the capacity 9.45%-37.83%. The IM16 model buckled at 4.27 T were based on nonlinear analysis and 18.50 T were based on linear analysis. The single elemen buckling was 20,63% of the largest compressive element

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Akimov, O. V., К. V. Kempf, A. I. Mikhailov, and R. R. Naboka. "Experience of using the dual derricks in Zarubezhneft Group of Companies." Neftyanoe khozyaystvo - Oil Industry, no. 3 (2023): 22–25. http://dx.doi.org/10.24887/0028-2448-2023-3-22-25.

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Farfsing, Kenneth C. "Black Gold in Paradise—Reclaiming Signal Hill." Southern California Quarterly 97, no. 3 (2015): 244–66. http://dx.doi.org/10.1525/scq.2015.97.3.244.

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In 1921 oil was struck in Signal Hill, a previously agricultural area. Speculation and poorly regulated drilling followed. Wells, sumps, and derricks surrounded houses. Fires, leaks, soil and air pollution, noise, and industrial accidents proliferated. To thwart annexation by Long Beach, Signal Hill incorporated as an independent city in 1924, but problems continued. The city formed the Signal Hill Redevelopment Agency in 1974. Redevelopment dramatically transformed Signal Hill. By 2011, residential neighborhoods and commercial space characterized the city. While wells continue to operate in cul-de-sacs and shopping center parking lots, oil and community have learned how to coexist.

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张, 超. "Stress Test Tooling Design for Derricks on Offshore Workover Rig and Module Drilling Rig." Journal of Oil and Gas Technology 43, no. 04 (2021): 42–49. http://dx.doi.org/10.12677/jogt.2021.434071.

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Robertson, David S. "Oil Derricks and Corinthian Columns: The Industrial Transformation of the Oklahoma State Capitol Grounds." Journal of Cultural Geography 16, no. 1 (1996): 17–44. http://dx.doi.org/10.1080/08873639609478345.

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Cho, Chung-Suk, Francis Boafo, Young-Ji Byon, and Hyunjoo Kim. "Impact analysis of the new OSHA cranes and derricks regulations on crane operation safety." KSCE Journal of Civil Engineering 21, no. 1 (2016): 54–66. http://dx.doi.org/10.1007/s12205-016-0468-7.

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Augspurger, Michael. "Fortune'sBusiness Gentlemen: Culture and Corporate Liberalism in the Early 1930s." Prospects 26 (October 2001): 423–47. http://dx.doi.org/10.1017/s0361233300000995.

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Fortuneportentously announced its aim in the first issue in February 1930: “Fortune'spurpose is to reflect Industrial Life in ink and paper and word and picture as the finest skyscraper reflects it in stone and steel and architecture.” The magazine's copious use of painting, literary writing, and artistic photography gave it a luxurious feel that few early reviewers failed to praise. The advertising firm Young and Rubicam, for instance, applauded the magazine's aestheticization of business: “A Toast to YouFortune… You've taken what are sometimes called ‘prosaic business’ and ‘sordid industry’ – you have viewed them with imagination, insight, and beauty … No longer is business a column of figures, or work a daily grind. Here is epic enterprise, a panorama of romance, adventure, conquest – with beauty in factories and derricks.” Upgrading the visual and textual environment of the business magazine,Fortuneprovided business with the elegance of the aristocracy and the allure of a Hollywood star.

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Stanford-McIntyre, Sarah. "Desk and Derrick: The Women's Petroleum Industry Club That Envisioned Oil's Technocratic Future." Labor 19, no. 4 (2022): 6–26. http://dx.doi.org/10.1215/15476715-10032348.

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Abstract This article uncovers the hidden history of Desk and Derrick, a female-only petroleum industry employees’ club, to emphasize the importance of clerical work and support staff to oil industry development. In doing so, it demonstrates that despite the oil industry's mythology of individual inventors and lucky wildcatters, oil was remarkably similar to other large-scale scientific and engineering enterprises during the middle decades of the twentieth century. Throughout the 1950s and 1960s, oil's white-collar and administrative jobs expanded rapidly. And in this industry as in others, women were fundamental to oil industry technological development and labor conflicts. Desk and Derrick's was a haven for working women, providing community, training, and leadership opportunities in an industry deeply hostile to female employees. The club provided numerous outreach and educational campaigns included seminars, workshops, fieldtrips, and conventions. These events showcased female competence and technical knowledge, clashing with union derision and corporate dismissal. The club's vocal emphasis on scientific education and credentialization represented a bid for female inclusion within an increasingly technically complex professional world. However, entrenched workplace sexism and union hostility to changing labor structures limited member opportunities. Ultimately, Desk and Derrick's middle-class aspirations allied the club with industry rebranding efforts and helped support industry automation and union-busting. Desk and Derrick valorized industry engineers and scientific professionals, spreading narratives of prosperity through technology that coincided with industry-wide efforts to repair oil companies’ reputations as greedy, wasteful, and exploitative. In turn, midcentury oil companies promoted Desk and Derrick as a convenient, grassroots way to spread their message.

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Louveau de la Guigneraye, Christine. "Louisiana Story, entre nature et cultures." Horizontes Antropológicos 7, no. 16 (2001): 157–72. http://dx.doi.org/10.1590/s0104-71832001000200009.

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Dans Louisiana Story, Robert Flaherty a choisi l'opulente nature louisianaise comme lieu de rencontre entre deux cultures: une culture industrielle anglophone et une culture rurale francophone. Ce film, qui est commandé et financé par la compagnie pétrolière Standard Oil devait à l'origine montrer les difficultés et les dangers de l'extraction pétrolière pour ses équipes tout en les mettant en scène dans une réalisation destinée au grand public. Le problème posé à Flaherty était que de telles manœuvres étaient souterraines, qu'elles échappaient à l'objectif de la caméra. Après avoir parcouru des milliers de kilomètres aux Etats-Unis à la recherche de l'inspiration, son choix se porta sur le pays des Acadiens de Louisiane où il fut marqué par l'image d'une plate-forme se déplaçant par voie d'eau sur l'un des multiples bayous de cette région. Ce lieu lui permettait de mêler et de confronter dans la même image la modernité des derricks et une nature sauvage, une population étrange par ses traditions et son langage à une population ouvrière plus typiquement américaine. Louisiana Story reste un film étrange et ambigu. Les hommes y apparaissent secondaires dominés par le gigantisme des équipements pétroliers et la grandeur de la nature. Il semble que lors du tournage Flaherty ait été fasciné par la faune et la flore au détriment du scénario qui était la rencontre entre deux cultures à travers les découvertes et les liens d'amitié d'un petit garçon cajun.

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Rassenfoss, Stephen. "Drilling Automation - Why the Raptor Rig Never Drilled a Well." Journal of Petroleum Technology 73, no. 12 (2021): 23–24. http://dx.doi.org/10.2118/1221-0023-jpt.

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Velociraptor is the name of extinct dinosaur from the Cretaceous Era and a drilling rig left behind by a company that died during last year’s COVID-19 event. Both creatures have a larger-than-life image. The dinosaur is famous as a terrifying presence in the Jurassic Park movies. The cinematic terror was modeled after a far larger ancestor of the Velociraptor, a dinosaur the size of a wolf that fed on small animals, according to an account in National Geographic. The Raptor rig, which was famous as Canada’s entry into the race to become the world’s first fully automated land rig, was created by a company that ran out of cash in the summer of 2020 after the deal to drill its first well was cancelled. Its true capabilities will not be known unless the current owner finds a customer willing to support the work needed to finish the rig and find a first customer. Still, the story of the Raptor offers a look at the skills, resources, and partners needed to bring an automated rig to life. The Raptor was conceived in a different era, back when North American drillers were racing to keep up with the demand arising from the shale boom, oil was selling for $100/bbl, and it took a lot longer than it does now to drill a horizontal well. Among the beneficiaries was Reg Layden, a rig designer who had just developed an ultrafast-drilling heavy coiled tubing rig. The innovation drew positive notices, but drillers were not about to embrace coiled tubing, so he designed a rig with an automated rig floor that could connect sections of pipe far faster than humans. His vision of the future was equipped with two derricks to allow continuous connections. One derrick would be connecting a section of pipe while the other would be readying the next one. They would roll back and forth, allowing one to be over the drill center while the other was readying the next stand. The startup, Raptor Rig, brought in Halliburton as a backer. It bought 23% of the startup shares and began a series of cash advances at a time when competitors including Schlumberger and NOV were developing their own drilling automation innovations. By 2015, the price of a barrel of oil had dropped to around $50, but an investor who was acting as spokesman for Raptor, Cameron Chell, predicted it would have a working rig by 2017, according to a story in Rigzone. That deadline came and went and the advances from Halliburton exceeded $25 million. Work ended sometime during the summer of 2020. The depth of the trouble was revealed when Halliburton filed suit at the end of July 2020 demanding payment for the nearly $29 million loaned to Raptor, which was secured by the rig and other property, according to court records in Calgary, Alberta. That pushed the company to seek bankruptcy protection. Since Raptor lacked the cash to pay its debts, the court appointed a receiver to sell the assets to raise as much money as possible to pay its creditors.

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Fu, Hu Dai, Wei Yang, and Shan Gang Wang. "Finite Element Analysis and Optimal Design for the Derrick of Workover Rig." Advanced Materials Research 631-632 (January 2013): 900–904. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.900.

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It proposed the finite element analysis to the derrick of workover rig in the paper. The stress distributing rule of derrick has been found, based on the finite element analysis of established derrick model. It analyzed the reasons for the effects of derrick thigh stress due to the derrick sustentation disposal format, the function of doorframe structure and the producing of dangerous section. The optimal derrick structure has been made up after calculating the derrick working stress, stress state and displacement measure.

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Wang, Chong, Zhi Jing Xu, Xiang Li, and Ge Liu. "Dynamic Response Analysis of Ocean Drilling Derrick under the Dynamic Load." Advanced Materials Research 977 (June 2014): 387–90. http://dx.doi.org/10.4028/www.scientific.net/amr.977.387.

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The derrick of a drilling ship is a kind of dynamic ocean derrick which is often applied to drilling operations for ocean engineering. Comparing with land rig derrick, the operating environment of drilling derrick is more complicated with not only the regular functions of static force but also the dynamic loads induced by wind, wave and current. Therefore, this paper takes a drilling derrick as example to make clear of the dynamic characteristics of the drilling derrick under the action of dynamic loads from outside environment with the finite element software ANSYS as tool to accomplish the modal analysis of the drilling derrick. According to the natural frequency and the vibration mode of the drilling derrick after modal analysis, the deformation response and the weak parts of the drilling derrick under different motivation can be predicted, and some improving suggestions can also be illustrated as well. This paper completed the dynamic analysis of the drilling derrick by modal analysis, and moreover, the displacement response and the stress of the drilling derrick varied with time can also be obtained. As consequence, the conclusion can be taken as reference for design of the drilling derrick, safety application and life sustainment.

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Zhu, Lin, and Yi Geng. "Reliability Analysis of Double Derrick Based on Stress Analysis." Key Engineering Materials 667 (October 2015): 548–54. http://dx.doi.org/10.4028/www.scientific.net/kem.667.548.

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The double derrick as an important part of the drilling rig hoisting system in deep sea oil and gas development, its working environment is much more complex than land rigs working environment. Therefore, in order to ensure the quality of drilling, it is very important to analyze the reliability of the deep double derrick structure and its dynamic load characteristic. Based on the ANSYS software to establish finite element model of double derrick, through the static analyzing to the derrick, get the stress distribution of the derrick structure in static action and the derrick stress deformation trend, provided a reference for evaluation of derrick. Selected the calculation method of double derrick overall reliability index, and according to the results of the finite element calculation of static strength calculated the double derrick overall reliability index, compared with the general standard, know that double derrick with high reliability.

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Wang, Jun Pu, Fu Wan, Jiong Liu, Hong Xiang Sun, and Hui Zhang. "Derrick Stress Monitoring System Based on Fiber Bragg Grating Sensor Technology." Applied Mechanics and Materials 226-228 (November 2012): 2124–27. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.2124.

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The importance and urgency for security condition monitoring of the in-service derrick is more and more people paying attention. Based on the FBG sensing technology developed a derrick stress monitoring system. The derrick stress monitoring system, composed by the derrick, a certain number of series of FBG sensors, sensor cables, signal demodulation devices, a portable computer that including a central processing and control platform. Carrying out study in the the ZJ70 model derrick. The experimental results show that the set of strain measurement system has good linear characteristics, repeatability and high sensitivity. Can satisfy the derrick stress monitoring requirement, can realize derrick stress real-time, online, continuous monitoring, expanding the development and application of optical fiber sensing technology in the field of the derrick structure monitoring.

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Wang, Gui Bing. "Replacement Construction Technology Analysis of Half-Through Reinforced Pipe Concrete Bridge Derrick." Advanced Materials Research 1065-1069 (December 2014): 949–55. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.949.

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This article relies projects, from derrick to replace the principle and derrick replacement order and step and important aspects of the construction derrick and the derrick to replace anti-corrosion treatment in half-through arch bridge construction derrick temporary replacement were discussed. Expect to be able to provide reference for similar projects draw on the research of this projects.

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Zhang, Yu Lian, and Hai Zhang. "Optimum Design Study of a Hydraulic Pressure Derrick Based on Stability." Advanced Materials Research 189-193 (February 2011): 1982–85. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1982.

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The bearing load is very large when the hydraulic pressure derrick suspends cargo. The hydraulic pressure derrick is a very important component which transfers cargo load to hull. The method of optimization theory based on dual method was transplanted to optimize the hydraulic pressure derrick structure and the optimizing model of the hydraulic pressure derrick was established. The hydraulic pressure derrick structure was optimized under four load cases. The numerical results show that the structure strength and stability of hydraulic pressure derrick are fit.

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Yao, Zhishu, Mingkai Liu, Xiaojian Wang, Bin Tang, and Weipei Xue. "Deflection Mechanism and Treatment Technology of Permanent Derrick of Freeze Sinking on Deep Alluvium." Advances in Civil Engineering 2019 (February 3, 2019): 1–10. http://dx.doi.org/10.1155/2019/1362628.

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Aiming at the problems of deflection and operation safety of permanent derrick of freeze sinking shafts, the mechanism analysis of uneven settling of the derrick foundations in frost-thawed soil was conducted. In addition, research on ground stabilization and derrick deviation rectification technologies was also studied in this paper based on the engineering practice of derrick of auxiliary shaft in the Dingji Coal Mine. Firstly, since the soil texture and artificial freeze temperature field are uneven, the bearing capacity and compression modulus of soil mass decrease after freeze thawing, resulting in uneven settlement of the foundation soil of the derrick footing and causing the deflection of the derrick. The finite element numerical analysis indicates that, in the event of uneven settling, the greatest tensile stress in the derrick structure of Dingji auxiliary shaft increased by 39.83% and the largest pressure stress increased by 33.33%. Secondly, this study used sleeve valve pipe single-fluid static pressure grouting technology to reinforce the foundation of the derrick footing. The reinforced depth of grouting is 32 m, and every derrick foundation has adopted three circles of grouting holes for grouting reinforcement. Meanwhile, the hydraulic synchronous jacking system was used to rectify the deviation of the derrick, restoring the centre line of derrick ascension to the original design state. Finally, the practice of grouting, foundation consolidation, and derrick deviation rectification projects of the Dingji auxiliary shaft suggest that, after grouting reinforcement, the rate of foundation settlement is gradually decreased and tends to be stable. This has resulted in uniform settlement, and through four basic jacking, the deflection of the derrick has been corrected to its initial design state.

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Yi, Xian Zhong, Sheng Zong Jiang, Yuan Qiang Ji, Ding Feng, and De Li Gao. "Strength Analysis and Calculation of JJ225/42-KC Type Oil Rig Derrick." Applied Mechanics and Materials 190-191 (July 2012): 551–54. http://dx.doi.org/10.4028/www.scientific.net/amm.190-191.551.

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Abstract. Oil rig derrick is a large and complex metal frame with lots of bars and complex force. Moreover, the use of working condition is complex and harsh, so it is quite necessary to analyze strength and calculate oil rig derrick. In this paper, with the basic structure and force characteristic of JJ225/42-KC type oil derrick, the ANSYS finite element software is used to establish JJ225/42-KC type oil derrick structure finite element model. The strength and stability analysis of the maximum hook load working condition, the working wind load working condition and the maximum wind load working condition of three combined working conditions indicates that the overall structural design of JJ225/42-KC type oil derrick is reasonable with good both dynamic and static characteristics and the derrick meets the requirements of the strength. What is more, the derrick has a excellent overall stability. In the end, the strength of the lifting devices and the derrick leg pin of JJ225/42-KC type oil derrick are calculated and checked, showing that all meet the requirements of the strength.

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Yan, Tie, and Chun Jie Han. "Research on the Vibration of Drilling Derrick." Advanced Materials Research 139-141 (October 2010): 2368–71. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.2368.

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Derrick is the basic equipment during drilling, fatigue and failure are the problems that effect drilling efficiency, the strong vibration of derrick is the main reason that caused derrick failure. The various kinds of vibration of drilling derrick are analyzed in this paper. The model of derrick JJ60/38-W is set up, the phenomena of vibration of derrick are studied, and the vibration state behaves many dynamic situations under the bad condition, including axial, lateral, torsional vibration. These vibrations are studied; the rule of various kinds of vibration is obtained. The modal vibration and harmonic vibration are analyzed, the situation of harmonic vibration of different nodes of derrick are obtained. The software ANSYS is applied in this paper, the result can be used for the actual drill case.

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Liu, Zhi, Ke Yao, Di Wu, Dong Li, Jiu Yan Fu, and Jin Xia Wu. "The Finite Element Analysis of Static Strength of Workover Derrick by Truck." Advanced Materials Research 503-504 (April 2012): 918–22. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.918.

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Conventionally, the influence of guy wire and wind load on derrick was often ignored in the static strength analysis of derrick of truck-mounted workover rig, it does not accord with the actual working conditions. This paper made the finite element analysis for one derrick of Truck-mounted workover rig through ABAQUS software. The author derive the maximum static hock load which derrick can bear, and reasonably shorten projective radius of guy wire, under different static hock load and wind load, determining the weakest position of derrick. Truck-mounted workover rigs are widely used in the filed of workover and drilling operation, due to their characteristic of power maneuverability and convenient to use. Derrick is the mainly working part of workover rig, as well as the weak links of workover. In order to guarantee relatively high security performance, we should accurately make simulated calculation for carrying capacity of derrick in the process of designing. The author derive the maximum static hock load which derrick can bear, and reasonably shorten projective radius of guy wire, by using the ABAQUS FEM system, apply for statics analysis of derrick under different static hock load and wind load.

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Song, Li Yang, Ji Wei Wang, Ping Chuan Dong, and Tian Lin Zhuang. "Mechanical Characteristics Analysis and Design Optimization of the Derrick." Advanced Materials Research 945-949 (June 2014): 174–80. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.174.

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In this paper, numerical simulation technology was applied to comprehensively analyze and study the mechanical properties of the derrick. The three-dimensional finite elements analysis model of the derrick structure was established, which provided the physical model of the numerical simulation and the optimization of the three-dimensional derrick. The finite element simulation method was applied to analyze and optimize the mechanical and deformation of the three-dimensional derrick structure, so that the theoretical method to study and design the three-dimensional derrick using finite element method was established.

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Li, Fang Po, Zhi Wei Zhang, and Bin Zhang. "Application Feasibility Study of High Strength Pipeline Steel to Rig Derrick and Substructure." Materials Science Forum 993 (May 2020): 616–21. http://dx.doi.org/10.4028/www.scientific.net/msf.993.616.

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Derrick and substructure is one of rig’s core equipment components, and it is also the most important weight component of rig. The working environment of derrick and substructure is very serious, whose material should has high strength, excellent plasticity, toughness and weldability property. In this paper, the chemical composition, micro-structure, tensile property, impact property, hardness and weldability of high strength pipeline steel with strength grades of X70 (485MPa)~ X100(690MPa) were systematically analyzed. The analysis and study of the service environment of rig derrick and substructure as well as the technical requirements of the material, showed that the performance of high strength pipeline steel was obviously better than that of the same grade high strength low alloy structural steel used in rig derrick and substructure at present, and it can fully meet the technical requirement of rig derrick and substructure. The application of high strength pipeline steel to rig derrick and substructure will improve the service property, optimize the design , and fully ensure the service safety of rig derrick and substructure.

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Liang, L. H., Zeng Liang Gao, S. N. Wang, Q. Y. Wu, J. X. Zhu, and M. B. Wu. "Structural Strength and Buckling Analysis for a Steel Derrick after its Members Removed Partly." Key Engineering Materials 353-358 (September 2007): 424–28. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.424.

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The static strength and stability of a derrick structure (78.5m high) after its members removed partly are researched. The derrick is modeled by three-dimensional spatial beam elements based on ANSYS. By the static analysis, the strength of the derrick after its member removing partly is larger than that of the original derrick structure since some loads disappear. From the buckling analysis, it can be found that the stability reduces drastically when removing some members.

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Gai, Yong Ge, and Zuo Long Zhang. "The Design of Self-Erection Derrick of Simple Offshore Workover Rig." Applied Mechanics and Materials 705 (December 2014): 117–21. http://dx.doi.org/10.4028/www.scientific.net/amm.705.117.

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Though the use of modular technology, a sub-vertical lifting offshore workover rig derrick for the marine small platform is designed, which can be installed and moved quickly. The overall derrick structure and most of the part design and selection are completed by Solidworks and Auto CAD. The static calculation for the derrick is done with the help of finite element analysis software ANSYS, and analyzed the results to ensure that the derrick designed could meet the strength requirements.

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Wang, Jiang Ping, and Ze Fu Bao. "The Stress Analysis of Drilling Derrick Structure Based on Finite Element Method." Applied Mechanics and Materials 251 (December 2012): 84–90. http://dx.doi.org/10.4028/www.scientific.net/amm.251.84.

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Oil-drilling derrick is the most important integrant of the equipments in oil industry and is also a giant load bearing structure. In this paper, the 3D geometric model of the derrick is created by commercial finite element analysis (FEA) software ANSYS, and the static stresses under several working conditions are analyzed. The displacement and stress distribution of the derrick acquired can lay the theoretical basis for the optimization design of structural and material choices of the derrick further.

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Zhu, Lin, and Yan Chen. "A Review and Prospect for Dynamic Load and Stability Check Method for Dual Derrick." Applied Mechanics and Materials 372 (August 2013): 309–13. http://dx.doi.org/10.4028/www.scientific.net/amm.372.309.

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The article introduces the dynamic characteristics researches for dual derrick, they are wind load response analysis, the vibration characteristics analysis, seismic response analysis and wave load analysis. On the stability of the dual derrick check, the article recommends the nonlinear finite element method and the treatment of boundary conditions. Although these studies have a certain guiding significance for the practical engineering, but there is a relative lack of the study for the dual derrick on deep-water drilling rigs. To this end, the article points out research contents for the further study of dual derrick dynamic characteristics, proposes the idea that using the reliability analysis theory of large truss structure to research the reliability of the double derrick.

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Huang, Tao, Jun Pu Wang, Fu Wan, Shao Wei Chen, and Yao Dong. "Stress Real-Time Monitoring of Marine Derrick Based on Environmental Loads." Applied Mechanics and Materials 226-228 (November 2012): 2128–31. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.2128.

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Aiming at the design feature and the operating of K-type derrick, an effective method used to stress real-time monitoring consider environmental loading is proposed. The challenge to the South China Sea offshore drilling derrick is a illustration. The derrick corrosion and wall thinning conditions is be considered, then using finite element software analyze derrick structure of static analysis, get the higher force about main member of derrick. Based on finite element analysis, select the key parts layout of measuring points, then monitor derrick stress under nine storms environmental loading and extreme work condition. The measured data results show that: the nine storms environmental load affect capacity of drilling significantly, the different parts of the main member stress have the different degrees of influence by environmental load, the maximum can reach 50.8%. This real-time monitoring method of stress, can protect the safety of marine operations, has a certain value of engineering application.

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Zhao, Guang Hui, Zheng Liang, Fa Guang Jiang, Jia Lin Tian, and Liang Zhang. "Out-Plane Stability of Derrick of Inclined Drilling Rig." Advanced Materials Research 199-200 (February 2011): 518–21. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.518.

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K-type derrick of inclined drilling rig that is top driving is usually loaded by axial compression, lateral force and concentrated torque simultaneously, and is more prone to out-plane instability due to its poor torsional rigidity. Here the upper segment of derrick was simplified as cantilever beam-column with laced-bar lattice structure. Stability model was established by energy method, and Ritz method was employed to obtain deformation curves for lateral deflection and torsion. Effects of dip angle of derrick and position of top drive on deformation were analyzed. At last the out-plane instability process of derrick is presented by increasing longitudinal compressive force gradually. For ultimate loads of well drilling condition, out-plane stability requirement of derrick is met.

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Li, Dong Wei, Ju Hong Fan, and Ren He Wang. "Numerical Simulation of Interaction between Coal Derrick and Foundation in Freeze - Thaw Process." Advanced Materials Research 295-297 (July 2011): 1146–49. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1146.

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With the increase of the depth of frozen sinking, mine permanent derrick was located into the the frozen wall scope. The internal force distribution law of the shaft – tower foundation was obtained by the field measurement of shaft – tower foundation pressures, reinforced internal force, concrete strain, foundation deformation, and other mechanical quantities. The numerical Simulation of interaction between coal derrick and foundation in freeze - thaw process showed that: Field measurement and numerical simulation of the same laws and values were in good agreement. It has very important theoretical and practical significance for the safe production of derrick and future derrick foundation design in freezing method construction.

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Li, Dong Wei, Ju Hong Fan, and Ren He Wang. "Triaxial Low-Temperature Creep Tests of Artificially Frozen Soil." Applied Mechanics and Materials 71-78 (July 2011): 3775–78. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3775.

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With the increasing in freezing shaft sinking depth of the mine，Mine permanent derrick was located into the frozen wall. The internal force distribution of the shaft-tower foundation was obtained by field measurement shaft-tower foundation basal pressure, foundation reinforced strain and the strain of concrete and foundation deformation of mechanical quantity. The numerical simulation of the interaction between coal derrick and foundation in freezing and thawing process shows that: the field measurement and numerical simulation laws were consistent and the values were in good agreement. It has very important theoretical and practical significance for the safe production of derrick and future derrick foundation design in freezing method construction.

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Zhi, Liu, Di Wu, and Bao Shan Sun. "The Finite Element Analysis of Derrick of Coal-Bed Methane Rigs." Applied Mechanics and Materials 215-216 (November 2012): 758–61. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.758.

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Using the finite element analysis software ANSYS established derrick model of CBM drilling rig car and calculated its static strength and model analysis. The maximum Mises stress and the weakest position of derrick was determined and given its four bands of natural frequencies and corresponding vibration model. The conclusion can be gotten from calculation results that the structure of derrick meet the requirements of design.

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Xu, Xiao Bing, Xing Han, and Li Yu. "Displacement Measurement of Derrick Model Base on the Non-Contact Type Video Measurement Technology." Applied Mechanics and Materials 318 (May 2013): 125–29. http://dx.doi.org/10.4028/www.scientific.net/amm.318.125.

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In this paper, a non-contact type video measurement technology is introduced, and the displacements of derrick model are measured by this technology. Then comparative analysis between this measurement results and the finite element analysis results showed that the precision of measurement displacement of derrick model used this technology is good. Therefore, this technology is an effective, convenient, safe, low cost, low labor and a new method of derrick displacement measurement.

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Rowell, Charles H. "Derrick Adams." Callaloo 38, no. 4 (2015): 797–800. http://dx.doi.org/10.1353/cal.2015.0116.

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Dexter, D. "Derrick Dexter." BMJ 346, may22 21 (2013): f2308. http://dx.doi.org/10.1136/bmj.f2308.

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Thomas, Joan, and Eddy Holt. "Derrick Foskett." BMJ 336, no. 7654 (2008): 1197.4–1197. http://dx.doi.org/10.1136/bmj.39581.596921.be.

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Grey, Denham. "DERRICK GREY." South African Forestry Journal 166, no. 1 (1993): 64. http://dx.doi.org/10.1080/00382167.1993.9629403.

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Wang, Kai Song, and Guo Qing Liu. "Derrick Spectrum Analysis Based on ANSYS." Advanced Materials Research 791-793 (September 2013): 1529–32. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.1529.

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The existing mine derrick design only includes the guiding principles and the empirical formula, but has no the mechanism of structural dynamics characteristics under an earthquake conditions. Then the modal analysis and spectral response analysis of the derrick have been finished for gaining the derrick natural frequency, mode shapes, and time response curve based on ANSYS in the thesis. The analysis results provides important basis for the anti-seismic design, optimization design and avoiding resonance.

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Sun, Jin Peng, and Jin Feng Jiao. "A Steel Headframe Structure before and after the Comparison and Analysis of the Performance of Process Modification." Advanced Materials Research 671-674 (March 2013): 606–10. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.606.

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Because the coal mine derrick technology needs, to be in from the original winch system of backward 10m based on a new set of new ground winch system, resulting in the original derrick structure stress state change. By using SAP2000 finite element software, the establishment of three-dimensional finite element model, the dynamic characteristics and technological transformation and bar stress were analyzed, for the coal mine derrick technological transformation to provide certain reference.

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46

Wang, Jinlong, Junliang Zhang, and Xiaqi Zhang. "Finite element analysis and optimization of workover derrick based on ANSYS Workbench." Journal of Physics: Conference Series 2206, no. 1 (2022): 012009. http://dx.doi.org/10.1088/1742-6596/2206/1/012009.

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Abstract Based on the actual workover operating conditions, this paper designs a workover operating machine for lifting and running tubing at the wellhead, and use SolidWorks to draw a three-dimensional model of the workover rig, through ANSYS Workbench, the main component of the workover rig is analyzed for the force under load. According to the results of static analysis and modal analysis, it is concluded that the main stress parts of the workover derrick are on the two uprights where the robot arm is installed, and the upper part of the workover derrick is most prone to resonance, after multi-objective optimization of the workover derrick, the deformation and the maximum stress of the workover derrick have been reduced by 9.5% and 9.8%, respectively. This research content provides a reference for the design of workover rigs in the future.

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Zou, Long Qing, Gui Juan Chen, Xing Jiang Gao, and Chu Hao Jiang. "Damage Identification Method Based on LMD Sample Entropy and SVM for Oil Derrick." Applied Mechanics and Materials 701-702 (December 2014): 620–23. http://dx.doi.org/10.4028/www.scientific.net/amm.701-702.620.

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To identify damaged position of oil derrick, this paper presents a damage identification method for oil derrick using LMD and sample entropy to extract eigenvector and SVM to identify classes. Hammering vibration response signal of damaged derrick is decomposed into several PF components. The sample entropy of PF components is calculated and used as eigenvectors. SVM classifier is constructed based on eigenvectors of different damage location, and this method can identify damage position accurately. This method is verified by comparison with recognition result of LMD and information entropy.

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Yan, Ming Yin, Cheng Yang Li, and Jia Qi Jin. "The Finite Element Analysis of Derrick Translation System in Vehicular Pressure Balance Workover Rig." Applied Mechanics and Materials 496-500 (January 2014): 836–40. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.836.

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Nowadays the workover rig is more often used in outdoor work, and the field environment is complicated and changeable.Therefore, it becomes extremely important to conduct a detailed analysis of stress of the workover rig derrick translational system.This paper takes Liaohe Oilfield new vehicular pressure balance workover rig derrick translation system as an example, a finite element analysis model is established to analyze the stress conditions of the derrick truck system.The result completely conforms to the actual requirements, thus verifying the rationality of the design and providing the basis for the optimization design of the translation system.

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Brillhart, John. "Derrick Henry Lehmer." Acta Arithmetica 62, no. 3 (1992): 207–20. http://dx.doi.org/10.4064/aa-62-3-207-220.

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Leigh, W. "Derrick Henry Randall." BMJ 350, apr13 6 (2015): h1958. http://dx.doi.org/10.1136/bmj.h1958.

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