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Intelligent Drilling and Completion:A Review

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Engineering 2022年第11期18卷 33-48页

作者： Gensheng Li Xianzhi Song shouceng tian Zhaopeng Zhu State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China

The application of artificial intelligence(AI)has become inevitable in the petroleum *** drilling and completion engineering,AI is regarded as a transformative technology that can lower costs and significantly improve drilling efficiency(DE),In recent years,numerous studies have focused on intelligent algorithms and their *** technologies,such as digital twins and physics-guided neural networks,are expected to play roles in drilling and completion ***,many challenges remain to be addressed,such as the automatic processing of multi-source and multi-scale ***,in intelligent drilling and completion,methods for the fusion of data-driven and physicsbased models,few-sample learning,uncertainty modeling,and the interpretability and transferability of intelligent algorithms are research *** on intelligent application scenarios,this study comprehensively reviews the research status of intelligent drilling and completion and discusses key research areas in the *** study aims to enhance the berthing of AI techniques in drilling and completion engineering.

关键词： Intelligent drilling and completion Artificial intelligence Intelligent application scenarios Literature review Systematic discuss

基于ALE-FEM耦合算法的磨料水射流破岩数值模拟及其机理分析

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石油科学通报 2024年第4期9卷 627-636页

作者：徐鹏盛茂田守嶒王天宇中国石油大学(北京)油气资源与工程全国重点实验室北京102249

磨料水射流在钻井提速、深穿透射孔和压裂增产等方面应用效果显著,深入认识磨料水射流破岩机理是提升其应用效果的关键之一。本文基于任意拉格朗日—欧拉耦合有限单元算法,提出了独立封装有限元网格描述磨料的方法,将水射流单元设定网... 详细信息

磨料水射流在钻井提速、深穿透射孔和压裂增产等方面应用效果显著,深入认识磨料水射流破岩机理是提升其应用效果的关键之一。本文基于任意拉格朗日—欧拉耦合有限单元算法,提出了独立封装有限元网格描述磨料的方法,将水射流单元设定网格随物质的运动而变化以实现流体流动特性,速度设置给物质;将磨料单元设定网格不随物质的运动而变化以实现固体颗粒特性,速度设置给网格。综合考虑岩石的动态冲击损伤作用以及水射流和磨料的协作,建立了可表征水射流流动和岩石损伤破坏的多相多物理场耦合过程的磨料水射流破岩模型,模型聚焦磨料颗粒和水射流对岩石微秒级的冲击破坏。采用2套网格捕捉磨料和水射流的协同破岩作用,得到了岩石破碎体积、岩石损伤场、水射流压力场、水射流和磨料对岩石破碎的能量贡献率等关键参数的时空演化特征。结果表明,磨料水射流破岩过程磨料起主导作用,水射流起辅助作用。分析得到磨料水射流中磨料—水射流协同破岩机理认识,磨料撞击岩石使岩石局部产生的高程度损伤降低了水射流破岩的难度,此外磨料冲击破碎岩石使得水射流和岩石之间产生新界面,促使水射流的冲击压力升高,提高了水射流的破岩能力,因此磨料水射流中的水相比于纯水射流具有更高的射流打击力和能量利用率,磨料冲击预损伤岩石叠加水射流聚集增压的磨料—水射流协同作用破岩是磨料水射流破岩效率和能量利用率高于纯水射流数倍的重要机理之一。研究结果对优化磨料水射流破岩参数提供了理论模型和设计依据。

关键词：磨料水射流数值模拟 ALE-FEM 破岩机理

维普期刊数据库博看期刊

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储层温度对页岩微观力学性质的影响

钻采工艺 2024年第1期47卷 73-79页

作者：程世忠盛茂任乐佳王天宇田守嶒李根生油气资源与探测国家重点实验室北京市102249 中国石油大学(北京) 中国工程院

深部页岩气储层温度较高,为了研究地层温度对页岩宏微观力学性质的影响,采用四川盆地长宁区块寒武系龙马溪组井下页岩岩心,开展了26℃、80℃、150℃条件下的网格式微米压痕实验,分别模拟地表、中深层与深部储层的环境温度。采用去卷积... 详细信息

深部页岩气储层温度较高,为了研究地层温度对页岩宏微观力学性质的影响,采用四川盆地长宁区块寒武系龙马溪组井下页岩岩心,开展了26℃、80℃、150℃条件下的网格式微米压痕实验,分别模拟地表、中深层与深部储层的环境温度。采用去卷积数据统计分析方法量化了温度对页岩微观力学性质的影响,结合能量分析法研究了温度对页岩微观尺度断裂韧性的影响规律,并分析了温度对深部页岩裂缝导流能力影响的作用机制。结果表明,随着深部储层温度的增加,显著削弱了页岩的微观弹性模量、硬度与断裂韧性,而增加了压痕点弹性变形能力;弹性变形能力的增强导致矿物簇受应力作用后具有恢复弹性形变的能力,进一步说明水力裂缝扩展后缝周矿物弹性形变易恢复,压裂裂缝难维持。该研究结果对从岩石微观力学角度理解深部页岩气储层水力裂缝导流能力低提供了理论支持。

关键词：深部页岩气储层储层温度岩石力学微米压痕水力压裂裂缝

Research and application of water jet technology in well completion and stimulation in China

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Petroleum Science 2010年第2期7卷 239-244页

作者： Li Gensheng Huang Zhongwei tian shouceng Shen Zhonghou State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 China

In recent years, rapid progress in the use of high pressure water jets （HPWJ） has been made in oil and gas well drilling, completion, and stimulation; and good results have been achieved in field applications. Advances in technologies and developments of well completion and stimulation with hydrajet are reviewed in this paper. Experiments were conducted to study the characteristics of abrasive water jetting and to optimize jet parameters, which can provide methods for the well completion and hydrajet fracturing. Deep-penetrating hydrajet perforating can create a 2-3 m clean hole with a diameter of 20-35 mm. Multilayer hydrajet fracturing is a process whereby multiple layers are stimulated in a single run without using mechanical packers, thereby reducing operation procedure and risk. Multilateral radial wells can be drilled using hydraulic jetting up to 100 m in length. The technique to remove sand particles and plugs with rotating self-resonating cavitating water jets in horizontal wellbores has been developed and oilfield-tested, which shows promising, cost effective prospects.

关键词： Water jet abrasive jet well completion perforation stimulation horizontal drilling with hydrajet

Mechanism and numerical simulation of pressure stagnation during water jetting perforation

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Petroleum Science 2008年第1期5卷 52-55页

作者： Huang Zhongwei Li Gensheng tian shouceng Shen Zhonghou Luo Hongbin Key Laboratory of Petroleum Engineering Ministry of Education China University of Petroleum Beijing 102249 China

When perforating with an abrasive water jet, it is possible that the pressure in the hole （perforation） will be higher than that in the annulus because of water jet blasting against the hole wall, which also is the theoretical basis for the technology of hydro-jet fracturing. This paper analyzes the mechanism of generating pressure stagnation in water jet hole, and puts forward a new concept of hydroseal. Then, the distribution of pressure in the hole was simulated with the finite element method. The simulation results showed that the pressure in the hole was higher than that in the annulus. Also, the lower the annular pressure （confining pressure） and the higher the blasting pressure, the greater the pressure difference. An experiment indicated that the cement sample was lifted up under the pressure stagnation in the hole, which proved the finite element simulation results obviously.

关键词： Water jet perforation pressure stagnation hydro-seal mechanism

Nanoscale mechanical property of marine and continental organic kerogen in shale

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Chinese Chemical Letters 2020年第2期31卷 509-512页

作者： Quan Xu Rui Zhang Mao Sheng shouceng tian Wuguang Li tianyu Wang Yilin Zhang State Key Laboratory of Petroleum Resources and Prospecting Harvard SEAS-CUPB Joint Laboratory on Petroleum ScienceBeijing Key Laboratory of Biogas Upgrading UtilizationChina University of Petroleum-BeijingBeijing 102249China Shale Gas Institute of Southwest Oil&Gas Field Company PetroChinaChengdu 610051China C.Eugene Bennett Department of Chemistry West Virginia UniversityMorgantownWest Virginia 26506-6045United States

Kerogen is known as an important organic part for absorbing and forming shale gas whose absorption function,especially mechanical and tribological properties,has not been fully ***,we use Fourier transform infrared(FTIR) and X-ray photoelectron spectroscopy(XPS) analysis to reveal the chemical structure of *** report the first study of the adhesion and friction behavior of kerogen using atomic force microscope(AFM) Nanoman *** finding reveals the friction of kerogen is decreased at higher pressure while is inhibited at increased temperature,and friction decreases logarithmically as the sliding speed *** weakened of Al-O linkage at high temperature have great influence on the decrease of friction forces between kerogen and alumina *** finding lays the mechanism for understanding the dynamic adhesion behavior of kerogen in frictions,therefore attracting increasing interests from scientists,researchers,petroleum engineers and investors.

关键词： Kerogen Friction Atomic force microscope Shale gas Mechanical property

鄂尔多斯盆地页岩油储层前置CO_(2)压裂流体分布特征

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西安石油大学学报（自然科学版） 2024年第2期39卷 55-61页

作者：臧雨溪王海柱王斌孙居正王天宇田港华石明亮吴毓乾田守嶒中国石油大学(北京)油气资源与探测国家重点实验室中国北京102249 中国石油新疆油田分公司采气一厂新疆克拉玛依834000 中国石油大学(北京)克拉玛依校区石油学院新疆克拉玛依834000

以鄂尔多斯盆地页岩油储层为对象,基于油藏数值模拟软件CMG-GEM及GOHFER,研究了CO_(2)注入量、闷井时间、储层水平/垂直渗透率比值、双水平井射孔压裂方式对流体分布的影响。结果表明:水平和垂直方向渗透率的差异性导致CO_(2)在水平方... 详细信息

以鄂尔多斯盆地页岩油储层为对象,基于油藏数值模拟软件CMG-GEM及GOHFER,研究了CO_(2)注入量、闷井时间、储层水平/垂直渗透率比值、双水平井射孔压裂方式对流体分布的影响。结果表明:水平和垂直方向渗透率的差异性导致CO_(2)在水平方向波及范围较大,注入量对波及长度影响更为敏感,该研究条件下注入量为140 m^(3)时邻段水平波及范围出现交汇,可认定为最优注入量;延长闷井时间可增大CO_(2)波及范围,但注入量的影响程度更大,建议通过调节注入量来控制波及范围;水平/垂直渗透率比对CO_(2)波及范围影响较大,比值越大水平方向波及越广、垂向波及范围越窄,呈扁平状分布;对比双水平井拉链式与同步式射孔压裂,其中拉链式射孔压裂有助于提升CO_(2)波及范围,有利于油气开发。研究可为页岩油储层前置CO_(2)压裂工艺参数优化设计提供理论指导。

关键词：储层改造前置CO_(2)注入流体分布非常规油气页岩油储层

非均匀射孔控制多簇裂缝均衡扩展机制及参数优化

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新疆石油天然气 2024年第3期20卷 54-63页

作者：盛茂邓超李杰顾明哲王天宇田守嶒油气资源与工程全国重点实验室中国石油大学(北京)北京昌平102249 中国石油大学(北京)克拉玛依校区新疆克拉玛依834000 中国石油新疆油田分公司采油工艺研究院新疆克拉玛依834000

水平井多簇射孔分段压裂已成为非常规油气藏完井改造的关键技术,然而各压裂段中部射孔簇裂缝受跟端趾端射孔簇裂缝的应力干扰作用显著、扩展阻力较大,是导致多簇裂缝非均衡扩展的主要原因之一。通过优化设计簇间非均匀布孔方式,调节各... 详细信息

水平井多簇射孔分段压裂已成为非常规油气藏完井改造的关键技术,然而各压裂段中部射孔簇裂缝受跟端趾端射孔簇裂缝的应力干扰作用显著、扩展阻力较大,是导致多簇裂缝非均衡扩展的主要原因之一。通过优化设计簇间非均匀布孔方式,调节各簇射孔参数,均衡簇间液量分配,削弱缝间应力干扰,促进裂缝均衡扩展。为此建立了考虑压裂段/簇间应力叠加的分段多簇裂缝扩展模型,对比分析了纺锤形布孔、坡度布孔、均匀布孔等三类布孔方式的裂缝扩展规律及其作用机制,以缝长、缝高扩展形态差异性评价裂缝扩展均衡性,优选布孔方式,设计正交试验优化非均匀布孔参数。结果表明,典型页岩油储层参数条件下,纺锤形布孔的裂缝扩展均衡性最优,其次是均匀布孔、坡度布孔。其作用机制为纺锤形布孔的端部簇射孔摩阻大于中部簇1.4~16.7倍,跟端趾端裂缝对中部裂缝的应力干扰作用被削弱,从而增加了中部簇进液量分配,相比均匀布孔,裂缝扩展均衡性提高了17.2%。而坡度布孔趾端簇孔数占比35%以上,进液量占优,达49.3%,导致其对中部簇裂缝挤压作用显著,不利于裂缝均衡扩展。优化纺锤形布孔参数表明,总孔数49个、孔径10 mm、端部簇孔数比例24.5%时,簇间裂缝扩展均衡性达到最优。研究结果有望为非常规油气多簇压裂非均匀射孔设计提供有效方法。

关键词：非均匀射孔裂缝均衡扩展分段多簇压裂射孔参数水力压裂

Theoretical and experimental study of the pulling force of jet bits in radial drilling technology

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Petroleum Science 2009年第4期6卷 395-399页

作者： Ruichang Guo Gensheng Li Zhongwei Huang shouceng tian Xiaoning Zhang Wei Wu China Univ Petr State Key Lab Petr Resources & Prospecting Beijing 102249 Peoples R China

Radial drilling technology, of which the jet bit is the key device, is a research focus in the field of oil drilling and production. This paper establishes mechanical equations for jet bits and analyzes the hydroseal of backward jets in bottom holes. Meanwhile this paper establishes a mechanical equation for a high pressure hose and analyzes the axial force distribution. Laboratory experiments indicate that the flow rate, the angle between the backward nozzle axis and the jet bit axis, and the hole diameter are the major influencing factors; the generation of the pulling force is mainly due to the inlet pressure of the jet bit; the backward jets can significantly increase not only the pulling force but also the stability of jet bits. The pulling force would reach 8,376 N under experimental conditions, which can steadily pull the high-pressure hose forward.

关键词： Radial drilling water jet jet bit depression effect pulling force