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A"One Engine with Six Gears"System Engineering Methodology for the Economic Development of Unconventional Oil and Gas in China

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Engineering 2022年第11期18卷 105-115页

作者： Guoxin Li chenggang xian He Liu State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing 102249China PetroChina Qinghai Oil Co. Ltd.Mangya 817500China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China

Unconventional oil and gas resources have become the most important and realistic field for increasing China’s domestic oil and gas reserves and *** present,the production scale does not match the massive amount of resources and the rapid growth of proven geological *** challenges of technology,cost,management,and methodology restrict large-scale and economic *** on successful practices,a"one engine with six gears"system engineering methodology is put forward,which includes life-cycle management,overall synergy,interdisciplinary cross-service integration,marketoriented operation,socialized support,digitalized management,and low-carbon and green *** methodology has been proved to be effective in multiple unconventional oil and gas national demonstration areas,including the Jimusar continental shale oil demonstration *** views are introduced-namely,that unconventional oil and gas do not necessarily yield a low return,nor do they necessarily have a low recovery factor.A determination to achieve economic benefit must be a pervasive underlying goal for managers and *** and recovery factors,as primary focuses,must be adhered to during China’s development of unconventional oil and *** required methodology transformation includes a revolution in management systems to significantly decrease cost and increase production,resulting in technological innovation.

关键词： Unconventional oil and gas resources System engineering Methodology transformation Life-cycle management Geoscience-to-engineering integration

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Pore scale numerical investigation of counter-current spontaneous imbibition in multi-scaled pore networks

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Petroleum 2023年第4期9卷 558-571页

作者： Yuchen Wu Xiukun Wang Chaofan Zhang chenggang xian China University of Petroleum(Beijing) Beijing102249China

The multi-scaled pore networks of shale or tight reservoirs are considerably different from the conventional sandstone *** hydraulic fracturing treatment,the spontaneous imbibition process plays an important role in the productivity of the horizontal *** the color-gradient model of Lattice Boltzmann Method(LBM)accelerated with parallel computing,we studied the countercurrent spontaneous imbibition process in two kinds of pore structures with different interlacing distributions of large and small *** effect of geometry configuration of pore arrays with different pore-scale and the capillary number Ca on the mechanism of counter-current spontaneous imbibition as well as the corresponding oil recovery factor are *** found that the wetting phase tends to invade the small pore array under small Ca in both types of geometry configurations of different pore arrays of four pore arrays *** wetting phase also tends to invade the pore array near the inlet for injecting the wetting phase no matter if it is a large pore array or small pore array except for the situation when the Ca is large to a certain *** this situation,the small pore arrays show resistance to the wetting phase,so the wetting phase doesn't invade the small pore near the inlet,but invades the large pore *** the geometry configurations of different pore arrays and Ca have a significant effect on the oil recovery *** work will help to solve the doubt about the selectivity of the multi-scaled pores of the wetting phase and the role of pores with different sizes in imbibition and oil draining in countercurrent spontaneous imbibition processes.

关键词： Countercurrent spontaneous imbibition Multi-scaled pore structures Selectivity of wetting phase to pore size Lattice Boltzmann method

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响应型Pickering乳液研究进展(Ⅱ)

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精细石油化工 2025年第1期42卷 69-75页

作者：殷俊荣武俊文王金冉王艺博鲜成钢贾文峰油气资源与工程全国重点实验室中国石油大学(北京)北京102249 中国石油大学(北京)非常规油气科学技术研究院北京102249 中石化勘探开发研究院北京100083

从制备乳液常见的固体乳化剂出发,分析了Pickering乳液稳定性的影响因素,总结了pH值响应、CO_(2)响应、光响应、磁响应、温度响应和多重响应型Pickering乳液的响应机理,并讨论了目前存在的问题。根据Pickering乳液的响应原理设计合成高... 详细信息

从制备乳液常见的固体乳化剂出发,分析了Pickering乳液稳定性的影响因素,总结了pH值响应、CO_(2)响应、光响应、磁响应、温度响应和多重响应型Pickering乳液的响应机理,并讨论了目前存在的问题。根据Pickering乳液的响应原理设计合成高性能、低成本的两亲性响应纳米颗粒,制备环保、可持续性发展的Pickering乳液将是今后的发展方向。

关键词：响应型Pickering乳液乳化/破乳研究进展响应机理

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纹层对页岩力学性质的影响及其对水力压裂的启示

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中国石油大学学报(自然科学版) 2025年第1期49卷 92-100页

作者：王小琼钟毅万有余温野群吴珊张木杨申颍浩葛洪魁鲜成钢陈浩中国石油大学(北京)非常规油气科学技术研究院北京102249 中国石油青海油田分公司钻采工艺研究院甘肃敦煌736202 合肥工业大学资源与环境工程学院安徽合肥230601 中海艾普油气测试(天津)有限公司天津300457

英雄岭页岩油纵向层系厚,具有高频旋回沉积特征,主要发育纹层状和层状页岩,岩性复杂,非均质性强,甜点识别难度大。以英雄岭干柴沟组纹层状页岩和层状页岩为研究对象,通过岩石力学试验,结合现场水力压裂微震及施工曲线分析,得到纹层对页... 详细信息

英雄岭页岩油纵向层系厚,具有高频旋回沉积特征,主要发育纹层状和层状页岩,岩性复杂,非均质性强,甜点识别难度大。以英雄岭干柴沟组纹层状页岩和层状页岩为研究对象,通过岩石力学试验,结合现场水力压裂微震及施工曲线分析,得到纹层对页岩力学性质及裂缝扩展的影响,并提出压裂对策建议。结果表明:相较于层状页岩,纹层状页岩天然微裂隙更发育;纹层状页岩抗压强度更低,破裂后产生的裂隙体积应变要小于层状页岩,主要是纹层状页岩形成的裂缝开度小,与现场压裂施工曲线上没有明显的破裂压力降结果一致;纹层状页岩压裂裂缝易沿纹层结构扩展,形成数量更多更为复杂的裂缝网络;纹层状页岩裂缝数量多,复杂度高,裂缝比表面积大,见油速度快,是更优的工程甜点;对于纹层状页岩建议采用“冻胶+滑溜水”复合压裂工艺,先以高黏冻胶撑开纹层的小开度裂缝,携砂支撑,增加裂缝有效性,再以滑溜水促进复杂裂缝网络扩展。

关键词：页岩油储层英雄岭岩石力学纹层水力压裂

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基于水力压裂现场实验室的致密砾岩人工缝网特征

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石油勘探与开发 2025年第1期52卷 217-228页

作者：覃建华鲜成钢张景梁天博王文中李思远张津宁张阳周福建中国石油新疆油田公司勘探开发研究院新疆克拉玛依834000 中国石油大学(北京)非常规油气科学技术研究院北京102249 西南石油大学油气藏地质及开发工程全国重点实验室成都610599 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 中国石油长庆油田公司苏里格气田开发分公司西安710018 中国石油大学(北京)克拉玛依校区新疆克拉玛依834000

为明确玛湖致密砾岩储层水力压裂后缝网发育特征,借鉴北美水力压裂试验场的成功经验,在玛131井区三叠系百口泉组二段(T1b2)和三段(T1b3)建立水力压裂现场实验室,共实施12口水平井和1口大斜度取心井,根据取心井MaJ02岩心裂缝CT扫描、成... 详细信息

为明确玛湖致密砾岩储层水力压裂后缝网发育特征,借鉴北美水力压裂试验场的成功经验,在玛131井区三叠系百口泉组二段(T1b2)和三段(T1b3)建立水力压裂现场实验室,共实施12口水平井和1口大斜度取心井,根据取心井MaJ02岩心裂缝CT扫描、成像测井以及岩心直接观测结果,结合示踪剂监测资料,研究水力压裂缝产状、连通情况、扩展规律和主控因素。研究表明:①水力压裂形成张性和剪切两种性质的裂缝,张性缝近似平行于最大水平主应力方向,自井筒射孔簇最远可延伸50 m;剪切缝分布于张性缝之间,大部分受缝间诱导应力场影响呈走滑剪切模式,部分呈共轭成对出现,整体上压裂缝呈先张后剪、张剪相间、剪切为主的特征。②示踪剂监测结果表明,生产早期井间普遍存在连通,随着生产的进行,缝内静压力逐渐降低,井间连通性下降。③岩性和压裂参数影响水力裂缝密度,泥岩夹层水力裂缝密度低于砾岩,并限制裂缝的扩展;更大的改造规模、更小的簇间距可提高裂缝密度,是提高单井产量的重要方向。

关键词：致密砾岩致密油水力压裂现场实验室大斜度井取心张性缝剪切缝缝网特征

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深层页岩射孔条件下原位应力场对水力裂缝起裂和复杂性的影响

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石油科学通报 2025年第1期10卷 120-132页

作者：刘英君鲜成钢梁兴张介辉李后俊刘云翼中国石油大学(北京)油气资源与工程全国重点实验室北京102249 中国石油浙江油田公司杭州311100

鉴于非常规各向异性储层水力压裂射孔簇非均匀起裂的科学难题,本文考虑弱面各向异性,射孔孔眼与井筒的应力集中效应的叠加,建立了任意定向井眼与射孔孔眼的应力模型与水力裂缝起裂形态预测的解析模型,研究了垂直缝、水平缝的起裂条件。... 详细信息

鉴于非常规各向异性储层水力压裂射孔簇非均匀起裂的科学难题,本文考虑弱面各向异性,射孔孔眼与井筒的应力集中效应的叠加,建立了任意定向井眼与射孔孔眼的应力模型与水力裂缝起裂形态预测的解析模型,研究了垂直缝、水平缝的起裂条件。对罗布区块产量差异最大的两口井进行力学分析,研究结果表明:射孔孔眼周围的应力分布对裂缝起裂压力有显著影响,从而影响了井筒附近裂缝的几何形状。在沿最小水平主应力方向布井且主要处于走滑偏正断层应力状态的Y1井中,未产生气液的主要力学原因是井眼与射孔通道两次应力集中导致近井原位应力场的水平主应力反转,应力状态变为逆断层,近井主要为水平缝,气液运移通道受阻。处于走滑偏正断层应力状态的Y2井中,两次应力集后应力状态变为走滑偏逆断层,垂直缝起裂范围占比75%以上,近井裂缝通道连通性较好,有助于储层气液的运移。本研究可为水力压裂的射孔优化设计提供参考,为现场实际应用提供了最小的起裂压力与最佳井筒—油藏连接通道的射孔方向。

关键词：页岩气应力集中水平主应力反转水平缝射孔优化

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Theoretical understandings, key technologies and practices of tight conglomerate oilfield efficient development: A case study of the Mahu oilfield, Junggar Basin, NW China

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Petroleum Exploration and Development 2020年第6期47卷 1275-1290页

作者： LI Guoxin QIN Jianhua xian chenggang FAN Xibin ZHANG Jing DING Yi PetroChina Exploration and Production Company Beijing 100007China CNPC Exploration and Development Headquarters of the Key Exploration Areas in the Junggar Basin Karamay 834000China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing 102249China Research Institute of Exploration and Development PetroChina Xinjiang Oilfield CompanyKaramay 834000China

A series of theoretical explorations and field tests have been carried out to efficiently develop the Mahu tight conglomerate oilfield in the Junggar *** of steered-by-edge fracturing and proactive fracturing interference were proposed.A series of innovative technologies were developed and implemented including optimization of 3-D staggered well pattern,proactive control and utilization of spatial stress field,and synergetic integration of multiple *** from shale,the unique rock fabric and strong heterogeneities of tight conglomerate formation are favorable factors for forming complex fractures,small space well pattern can proactively control and make use of interwell interference to increase the complexity of fracture network,and the"optimum-size and distribution"hydraulic fracturing can be achieved through synergetic *** pilot phase of this field,both depletion with hydraulically fractured vertical wells and volume fracturing in horizontal wells were tested after water injection through vertical wells,then the multi-stage fracturing with horizontal well was taken as the primary development technology.A series of engineering methods were tested,and key development parameters were evaluated such as well spacing,lateral length,fractures spacing,fracturing size,and fracturing operation *** to geoengineering approach,the 100 m/150 m tridimensional tight-spacing staggered development method was established with systematic integration of big well clusters,multiple stacked pay zones,small well spacing,long lateral length,fine perforation clustering,zipper fracturing and factory *** to half-year production performance,100 m/150 m small spacing wells outperformed 500 m/400 m/300 m spacing *** average estimated ultimate recovery(EUR)of wells was identical with those best wells from large-spacing *** with the overall performance of Mahu oilfield,the drainage efficiency and estimated recove

关键词： tight conglomerate tight oil Junggar Basin Mahu oilfield steered-by-edge fracturing proactive fracturing interference small spacing staggered well pattern

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Geological characteristics,evaluation criteria and discovery significance of Paleogene Yingxiongling shale oil in Qaidam Basin,NW China

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Petroleum Exploration and Development 2022年第1期49卷 21-36页

作者： LI Guoxin ZHU Rukai ZHANG Yongshu CHEN Yan CUI Jingwei JIANG Yinghai WU Kunyu SHENG Jun xian chenggang LIU He State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China PetroChina Qinghai Oilfield Company Dunhuang 736202China Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China

Major breakthroughs of shale oil exploration have been made recently in the upper member of Paleogene Lower Ganchaigou Formation of Yingxiongling area, Qaidam Basin. However, the low total organic carbon content of saline-lacustrine source rock, and unclear genetic mechanism, evaluation criteria and resources potential of the shale oil have restricted the exploration and evaluation of Yingxiongling shale oil. Through analysis of large amounts of cores, well drilling, seismic, laboratory test data and integrated study, focusing on the shale and mixed types of shale oil reservoirs characterized by high-frequency interbedded organic-rich laminated shale and limy dolomite, it is concluded that the shale oil in the upper member of Lower Ganchaigou Formation in the Yingxiongling area have six geological characteristics:(1) two-stage hydrocarbon generation of hydrogen-rich source rock and large amount of retained oil;(2) multiple types of reservoir space and good reservoir properties;(3)source-reservoir integration, thick “sweet spot” and high oil-bearing grade;(4) high pressure coefficient between and under salt layers, and sufficient formation energy;(5) high content of light components, high gas-oil ratio, and good quality of the crude oil;(6) high content of brittle minerals and good fracability. The evaluation criterion of shale oil is preliminarily established based on the eight parameters: total organic carbon content, maturity, effective porosity, oil saturation, brittle mineral content,pressure coefficient, lamellation density, and burial depth. Combined with parameters of E32 source rock thickness, area, vertical distribution of oil layers, and free hydrocarbon content, the shale oil resources have been preliminarily estimated as 21×10^(8) *** structurally stable area is the predominant objective of shale oil exploration and the favorable exploration area for Yingxiongling shale oil is nearly 800 km^(2).

关键词： Yingxiongling shale oil Qaidam Basin Paleogene Lower Ganchaigou Formation mixed sedimentation hydrogen-rich source rocks evaluation criterion

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Low organic matter abundance and highly efficient hydrocarbon generation of saline source rock in the Qaidam Basin,NW China

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Petroleum Exploration and Development 2023年第5期50卷 1030-1044页

作者： LI Guoxin ZHANG Bin WU Kunyu WU Songtao WANG Xiaomei ZHANG Jing QI Xuening ZHANG Na XING Haoting xian chenggang LIU He State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China China National Petroleum Corporation Beijing 100007China Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China PetroChina Qinghai Oilfield Company Dunhuang 736202China

The geochemical analysis and experimental simulation are comprehensively used to systematically study the hydrocarbon generation material,organic matter enrichment and hydrocarbon generation model of Paleogene source rock in the Western Qaidam Depression,Qaidam Basin,NW *** main factors result in low TOC values of saline lacustrine source rock of the Qaidam Basin:relatively poor nutrient supply inhibits the algal bloom,too fast deposition rate causes the dilution of organic matter,and high organic matter conversion efficiency causes the low residual organic *** this type of hydrogen-rich organic matter,due to the reduction of organic carbon during hydrocarbon generation,TOC needs to be restored based on maturity before evaluating organic matter *** hydrocarbon generation of saline lacustrine source rocks of the Qaidam Basin is from two parts:soluble organic matter and insoluble organic *** soluble organic matter is inherited from organisms and preserved in saline lacustrine *** generates hydrocarbons during low-maturity stage,and the formed hydrocarbons are rich in complex compounds such as NOS,and undergo secondary cracking to form light components in the later stage;the hydrocarbon generation model of insoluble organic matter conforms to the traditional“Tissot”model,with an oil generation peak corresponding to Ro of 1.0%.

关键词： Qaidam Basin Qaidam Western Depression Paleogene Lower Ganchaigou Formation saline lake low TOC value shale oil dissolved organic matter high efficient hydrocarbon generation hydrocarbon generation model organic matter abundance

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页岩气地质工程一体化建模及数值模拟:现状、挑战和机遇

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石油科技论坛 2018年第5期37卷 24-34页

作者：鲜成钢斯伦贝谢公司中国地球科学与石油工程研究院

页岩气地质工程一体化核心内涵新模型,将钻井、完井改造、生产和开发四大工程系统有机联系,在多学科、多部门一体化共享模型基础上,从单井、平台、全气田多尺度,概括了针对四大工程系统的主要工程应用。从三维建模、压裂模拟和数值模拟... 详细信息

页岩气地质工程一体化核心内涵新模型,将钻井、完井改造、生产和开发四大工程系统有机联系,在多学科、多部门一体化共享模型基础上,从单井、平台、全气田多尺度,概括了针对四大工程系统的主要工程应用。从三维建模、压裂模拟和数值模拟等方面,回顾了国内外非常规油气藏建模及数值模拟的现状及进展。指出我国在地球物理资料应用、适时建模、气田尺度一体化共享模型、全气田数值模拟、对四大工程系统各种应用的发掘和支持等领域走在前列;北美在机理研究、基础数学模型建立、建模方法及数模新技术探索、井或平台尺度的精细化参数研究等领域更加详细和深入。从复杂天然裂缝系统定量表征、井筒完整性、平面(立体)加密井或立体布井、页岩气田全气田数值模拟、井筒动态和气态动态耦合5个领域分析了所面临的关键性现实挑战,探讨了主要研究方向和思路。

关键词：页岩气地质工程一体化三维建模数值模拟钻井完井压裂裂缝系统定量表征井筒完整性

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