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检索条件"机构=CNPC Engineering Technology R and D Company"

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HYdrAULIC ANALYSIS OF dOWNHOLE OSCILLATING TOOL TUrBINE BASEd ON SLIdING GrId 29

HYDRAULIC ANALYSIS OF DOWNHOLE OSCILLATING TOOL TURBINE BASE...

引用

29th International Congress on Sound and Vibration, ICSV 2023

作者： Zejun, Hua Anxue, Jia Xiang, Miao Xianbo, Xue Haijun, Liu Botao, Zhou China Oilfield Services Limited China CNPC Engineering Technology R&D Company Limited China

ISBN: (纸本)9788011034238

Turbine is a commonly used component in downhole tools, and its flow field characteristics have a significant impact on the performance of downhole tools. This article is based on fluid dynamics theory, using finite element method and sliding grid technology to analyze the flow field characteristics and torque characteristics of a single turbine group. Analysis shows that when the displacement is constant, the turbine torque remains almost constant. This study can provide a basis for turbine design. © 2023 Proceedings of the International Congress on Sound and Vibration. All rights reserved.

关键词： Finite element method

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A new drill bit selection method based on machine learning and intelligent optimization process 57

A new drill bit selection method based on machine learning a...

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57th US rock Mechanics/Geomechanics Symposium

作者： Liu, Z.H. Song, X.Z. Ye, S.L. Yin, Z.Y. Ji, Y. Zhang, C.K. Ma, B.d. Zhu, Z.P. Han, L. Beijing102249 China CNPC Engineering Technology R&D Company Limited Beijing102206 China

ISBN: (纸本)9780979497582

In the process of oil and gas drilling, the drill bit is the direct tool to break rock. The selection of drill bit needs to consider formation factors, drilling construction factors, field size requirements and other factors. At present, the optimization methods mainly include mechanical analysis, cost analysis, neural network method and other methods, but there are some limitations. In this paper, three categories and more than ten kinds of input parameters are selected, and the rate of penetration is predicted by BP neural network algorithm. Then, the bit library is established according to the actual bit used in the field, and the parameters of the bit are optimized by intelligent optimization process, and the actual demand is taken as the constraint to select the most suitable one. The error of the rOP prediction model was within 10%, and the rOP was increased by 11.67% on average with the optimized bit. In this paper, the rock breaking rule and complex mechanism of drill bit are stored in the model, and the drill bit optimization is carried out according to the actual requirements, which can provide a certain degree of support for the field drill bit. © 2023 57th US rock Mechanics/Geomechanics Symposium. All rights reserved.

关键词： Bits

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Study on the Sealing Characteristics of Temporary Plugging Agent in the Perforation Tunnel 13th

Study on the Sealing Characteristics of Temporary Plugging A...

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13th International Field Exploration and development Conference, IFEdC 2023

作者： Li, Yan-Chao Wang, Yi-Xuan Feng, Qiang Zou, Long-Qing Wen, Huan Gao, Xiang Shale Gas Exploration and Development Department CNPC Chuanqing Drilling Engineering Co. Ltd. Beijing China CNPC Engineering Technology R&D Company Ltd. Beijing China

ISBN: (纸本)9789819702596

To understand the sealing characteristics of temporary plugging agents (TPA) in the borehole, a system was established for simulating high pressure temporary plugging experiments. The influence of the type and the concentration of TPA, the carrying liquid viscosity and the pump displacement on the sealing characteristics are studied, and the comparison and selection experiments of TPA are also performed. It can be concluded from experimental results that i) the higher viscosity of carrying liquid leads more TPA to going into the low-angle-borehole, resulting in better sealing characteristic;ii) the larger pump displacement causes more boreholes blocked by the TPA (especially the number of blocked low-angle-boreholes are more than that of blocked high-angle-boreholes);iii) both low-angle-borehole and high-angle-borehole are filled with more TPA duo to the higher concentration of TPA;iv) the sealing efficiency of TPA-knot is the highest, followed by TPA-particle and TPA-ball, and the TPA-fiber is the lowest. For obtaining the excellent sealing efficiency, it is recommended the mixed use of TPA-knot, TPA-particle and TPA-ball. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Boreholes

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research on System Efficiency Evaluation of dilute Pumping Unit Based on Clustering 12th

Research on System Efficiency Evaluation of Dilute Pumping U...

引用

12th International Field Exploration and development Conference, IFEdC 2022

作者： Li, Bing Zhou, Bo Yu, Jing He, Liu Tan, Chao-dong CNPC Engineering Technology R&D Company Limited Changping Beijing China Changping Beijing China

ISBN: (纸本)9789819919635

System efficiency is an important index to evaluate energy consumption and management level of pumping *** evaluation of system efficiency is of great significance for parameter adjustment and optimization decision. At present, the evaluation index of system efficiency of dilute pumping Wells in oilfield is single, and the influence of dilute is not considered, so it cannot point out the direction of system efficiency improvement. In this paper, the system efficiency calculation model of dilute pumping Wells is established, the system efficiency evaluation index set is established by analyzing the influencing factors of the system efficiency of dilute pumping Wells, and the system efficiency evaluation model suitable for dilute pumping Wells is established by using cluster analysis algorithm. Through the establishment of the evaluation method of doped rare of well pumping unit is analyzed, according to the results of the characteristics of the mixing thin oil well classified effect is good, the low efficiency of Wells are pumping unit balance to solve the problem of poor or motor power factor smaller downhole inefficientmixing thin oil well has a small stroke, at times, more big, the mixed liquid viscosity,mixing amount of dilute,mixed with characteristics of thin oil density is not reasonable, the results show that the model can quickly classify the efficiency of diluted oil well system and provide direction for the efficiency optimization of diluted oil well system. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： Oil wells

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An Intelligent Prediction Method of Horizontal well rOP Based on di-GrU 57

An Intelligent Prediction Method of Horizontal well ROP Base...

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57th US rock Mechanics/Geomechanics Symposium

作者： Pan, Tao Song, Xianzhi Wang, Zheng Yin, Zhiyong Ji, Yong Zhu, Lin Pei, Zhijun Ye, Shanlin Liu, Muchen Li, Zhen Zhu, Zhaopeng Beijing102249 China CNPC Engineering Technology R&D Company Limited Beijing102206 China

ISBN: (纸本)9780979497582

At present, with the continuous development of unconventional oil and gas exploration and development, horizontal wells, as an important means of unconventional oil and gas exploitation, have attracted much attention from drilling teams and oil field companies. However, the cost of horizontal well drilling is relatively high, so more targeted construction should be carried out according to the characteristics of horizontal well drilling. Therefore, rate of penetration (rOP) prediction of horizontal wells is extremely important. The current rOP prediction models of horizontal wells mainly rely on manual experience and some mechanism models, and do not take field data and actual construction conditions into account, so the field application effect is difficult to be ideal. To solve this problem, an intelligent algorithm based rOP prediction model for horizontal Wells is proposed and a novel dual-input neural network structure is designed. Sequential data such as hook load and rotary torque are input into Gated recurrent unit' (GrU) network, and non-sequential data such as bit type are input into back-propagation neural network(BP), which is called dual Input GrU(di-GrU) rOP prediction model. The results show that mean absolute percentage error and r-squared of this model are 11.8% and 0.923 respectively. The prediction model based on di-GrU proposed in this paper has higher accuracy and better mobility, which is of guiding significance for improving the drilling efficiency of horizontal wells. © 2023 57th US rock Mechanics/Geomechanics Symposium. All rights reserved.

关键词： Horizontal wells

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drilling Optimization for Ultra-long Slim Hole Horizontal Wells in duvernay Shale project, Canada

Drilling Optimization for Ultra-long Slim Hole Horizontal We...

引用

International Petroleum and Petrochemical technology Conference 2024, IPPTC 2024

作者： Kong, Lulin Wang, Haige Cui, Longlian Zhao, Xiangguo rao, LiangYu Zhang, Shupin CNPC Engineering Technology R&D Company Ltd. Beijing China CNPC International Exp. & Dev. Company Ltd. Beijing China PetroChina Canada Ltd. AB Canada

Objective/Scope(30-75): drilling contractors have always strived to pursue higher single well production and lower well-construction cost in order to achieve higher return on investment. Efforts have been made in recent years to break technological barriers to create ultra-long(>3500m) slim hole horizontal wells in duvernay shale project. However, there were many challenges while extending the 6.75-in. slim hole laterals, such as 1) difficulty in weight transfer regarding motor slide drilling, 2) high down-hole friction torque and high ECd, 3) short servicing life and low efficiency of MWd, 4) inability to tracking thin substrata with limited logging tool, 5) production casing deployment challenges including stuck pipe risk and long running time. To overcome these obstacles, systematic solutions were proposed for unconventional ultra-long horizontal wells. Methods, Steps, and Process(75-100): This paper proposes an integral drilling program to enhance overall drilling performance of ultra-long horizontal wells. First, Slim hole design to reduce well-construction cost through a reduction in steel, cement and fluid costs. Second, the upper drilling string upgraded from 4-in. drill pipes to 4.5-in. drill pipe with an advanced reduced Od premium connections, while Bottom Hole Assembly (BHA) employed even-wall stator PdM and Motorized rSS to improve drilling efficiency;Third, the OBM system is optimized for strong stability, lower friction, and clay-free invert emulsion to ensure safety drilling of longer laterals. Additionally, the MPd is equipped to maintain a lower ECd with minimal downhole losses;Then, a near-bit vibration sensor integrated into the rSS was deployed to provide real-time assessment of the severity of downhole shock and vibration. reasonable drilling parameters were adjusted to reduce or eliminate downhole vibration and mitigate motor and MWd failure. Next, Azimuthal Gammy ray was adopted and incorporated with dynamic drilling parameters data in real-t

关键词： Bottom-hole assembly

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development and Application of Wireless Strain Test System in the Bearing Capacity Test of Oil derrick 13th

Development and Application of Wireless Strain Test System i...

引用

13th International Field Exploration and development Conference, IFEdC 2023

作者： Jia, deng Zhou, Zhi-Xiong Yang, Xiao-Guang Luo, Xue-Li Li, Yang Jin, Ling Zuo, Wei-dong Zhang, Na Ma, Ying CNPC Engineering Technology R&D Company Limited Beijing China Beijing Kembl Petroleum Technology Co. Ltd. Beijing China

ISBN: (纸本)9789819702718

In order to ensure the safe production of oil drilling equipment, about 2000 sets of in-service oil drilling rigs and workover rigs need to be tested and evaluated every year, covering daqing, Changqing, southwest, Tarim, dagang and other major oil and gas fields as the key equipment of the drilling rig system, the bearing capacity of the derrick is directly related to the safety of production. In view of the complex data transmission line, low efficiency and high labor intensity of the wired strain tester, a wireless strain testing system with the function of testing and analyzing the bearing capacity of derrick is developed the integration of wireless transmission of derrick bearing capacity test data, on-line analysis and load capacity evaluation is realized. Through the quasi-calibration of Beijing Institute of Metrology and Field Test of Oil derrick, it is proved that the research results have high accuracy in strain detection (JJG623–2005), strong stability, high efficiency, low power consumption, friendly interpersonal interface and broad application prospects. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Bearing capacity

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revealing and Solving the Hidden Hinders for Efficient Shale Gas drilling Based on data Analytics and Machine Learning

Revealing and Solving the Hidden Hinders for Efficient Shale...

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2024 SPE Asia Pacific Oil and Gas Conference and Exhibition, APOGCE 2024

作者： Zhang, Jiawei Zhuang, Tao Ji, Guodong Huang, Hongchun ding, Zhen Yang, Zhaoliang CNPC Engineering Technology R&D Company Limited Beijing China China Petroleum Technical Service Corporation Limited Beijing China CNPC ChuanQing Drilling Engineering Company Limited Sichuan Chengdu China Engineering Technology Research Institute PetroChina Southwest Oil & Gas Field Company Sichuan Chengdu China

ISBN: (纸本)9781959025269

despite annual production of shale gas exceeding 20 billion cubic meters from Sichuan basin in China, its cost-effective development has been constrained by lengthy drilling cycle of horizontal sections caused by downhole complex such as leakage, stuck pipe, multiple drilling trips due to frequent downhole tool failure, low rOP, bit wear and other related challenges. Progress has been realized in reducing NPT and increasing rOP due to extensive effort in complex prevention and drilling optimization in the last few years. However, little attention has been paid to the influence of downhole vibration and bit wear misjudgment on efficient shale gas drilling. This paper presents the revealing and solving of these two hidden hinders based on data analytics and machine learning. Various sources of data, including over 300 cases of bit records, lithology, elemental logging and downhole vibration measurements from drilled formation for selected representative drill bits, as well as the data from full-scale indoor experiments, were collected for analysis and comparison. The characteristic of bit vibration and rock-breaking efficiency, obtained from five specifically designed 8-1/2″ PdC bits with different levels of worn cutting teeth which were used to drill artificial cores with varying degrees of heterogeneity, were evaluated with data from bit records and downhole measurements. Furthermore, identification of bit wear states was realized to reduce unnecessary POOH by combing rFA and data from bit records. It's revealed that severe downhole vibration, caused by formation heterogeneity and reflected in mineral composition when crossing different layers, is one of previously overlooked causes for downhole tool failure and premature bit wear. Consequently, trajectory optimization was proposed to reduce downhole vibration. Experimental results suggested the wear value of 2-2 should be defined as "critical wear value" for PdC bit as significant difference in rock-breaking perfor

关键词： drills

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Numerical Analysis of Fracture Propagation Behavior in Hard rocks Subjected to radial Borehole Fracturing Based on the Combined Finite-discrete Element Method 58

Numerical Analysis of Fracture Propagation Behavior in Hard ...

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58th US rock Mechanics / Geomechanics Symposium 2024, ArMA 2024

作者： Zou, Wenchao Huang, Zhongwei Wang, Zikang Wu, Xiaoguang Zhang, Xu Xie, Zixiao Li, Kun Huang, Pengpeng Tan, Hui Qin, Xinyu China University of Petroleum-Beijing Beijing China CNPC Engineering Technology R&D Company Limited Beijing China Yunnan China

ISBN: (纸本)9798331305086

Hydraulic fracturing is an important stimulation technology to achieve high and stable production in deep and ultra-deep reservoirs. However, there are currently numerous complex technical problems, such as high breakdown pressure, single fracture and uncontrollable. To addressing those issues, a novel stimulation, radial borehole fracturing has been proposed. To have a clear understanding of the radial borehole fracturing performance, a 3d Finite-discrete Element Method model of radial borehole fracturing is established in this paper. Then, the applicability of the HM coupled FdEM model was validated by laboratory experiments. The results indicate that when horizontal stress difference ratio is 0.4, radial borehole fracturing has a significant guiding effect on fracture propagation behavior. radial borehole fracturing creates fractures with larger tortuosity and aperture. Compared to conventional fracturing, the breakdown pressure of hard rock in radial borehole fracturing is 9.1%~14.1% lower. As Young's modulus increases, the guidance of radial borehole and the complexity of fracture network strengthen. The present study is expected to provide a theoretical foundation for applicability of radial borehole fracturing in deep and ultra-deep reservoirs. Copyright 2024 ArMA, American rock Mechanics Association.

关键词： rock mechanics

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A Novel Methodology to reduce Carbon Footprints: Trials of residual Heat recycling in China and Middle Asia 83

A Novel Methodology to Reduce Carbon Footprints: Trials of R...

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2022 SPE EuropEC - Europe Energy Conference featured at the 83rd EAGE Annual Conference and Exhibition, EUrO 2022

作者： Fu, Jin Cui, Longlian Yang, Guobin Zhang, Shunyuan Chen, Chen CNPC Engineering Technology R&D Company Ltd.

ISBN: (纸本)9781613998656

As a mature methodology to enhance recovery of heavy oil, ultra-heavy oil and tar oil, steam assisted gravity drainage has been adopted in several oil production regions in China since 1990's. Liaohe Oilfield which is located in the northeastern part of China has become the most important production base of heavy oil in China. Heavy oil reservoirs in Kenkyak Oilfield Kazakhstan are found on a semi-dessert plain where saline soils are widely distributed. The cold production techniques used to be deployed in Kenkyak Oilfield, but the relatively low recovery rates have made the operator to carry out a feasibility research on steam injection. The steam assisted gravity drainage technology enhances recovery rates of heavy oil, producing a large amount of heat at the same time. The thermal resources are residual heat of hot separated water from the boiler's moisture separator, residual heat of produced fluid associated by crude oil, residual heat flue gas injected into the boiler. The separated water is as hot as steam, with a flow rate of 25% of the gas injection volume. The produced fluid associated by crude oil is at 160°C, with a flow rate of 1.1 times of the gas injection volume. The flue gas is at 240-250°C, much hotter than flue gas generated by conventional boilers. The residual heat does not only affect on-site operation and management, but also results in waste of thermal energy. Now the residual heat of produced fluid and separated water is deployed to heat supply water and fuel. Based on geological conditions and on-site operation requirements, there is neither a river to cool the residual heat, nor a common heating system to generate a large amount of thermal energy. Besides, both Chinese government and Kazakhstani government are adopting strict environment protection laws, banning direct discharge of waste water and extraction of underground water in the oilfields. A once-through boiler steam injection boiler generates humid steam with a dryness fraction of

关键词： Crude oil

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