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Two-Layer co.tact Nonlinear Mechanical Analysis of Flexible Drilling Tool in the Wellbore

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co.puter Modeling in Engineering & Sciences 2020年第4期123卷 75-100页

作者： Min Luo Tingting Xu Jiajun Jiang Xu Chi Jing Wang Shihua Xue Mechanical Science and Engineering co.lege Northeast Petroleum UniversityDaqing163318China Toutai oilfield Daqing Oil Field Co.Daqing163000China Natural Gas Branch the Third Group of Oil and Gas ProcessingDaqing Oil Field Co.Daqing163453China Mathematics and Statistics co.lege Northeast Petroleum UniversityDaqing163318China

The lack of research on flexible drilling tool leads to limited application of ultra-short radius horizontal *** flexible drilling tool is different from the co.ventional drilling *** flexible drilling pipe involves a mutual transition between the structure and the mechanism during the deformation *** the same time,the flexible drilling pipe and the eccentric guide tube,the guide tube and the wellbore generate random *** this paper,3-D beam elements,universal joint elements,rigid beam elements and the beam-beam co.tact elements are co.bined to establish a two-layer co.tact nonlinear finite element model of the flexible drilling tool in the *** dynamic relaxation method is introduced for numerical *** feasibility of the model and the algorithm is verified by an *** mechanical analysis of flexible drilling tool under the four hole inclinations in the oblique section is carried *** is found that the flexible drilling pipe has a“folded line”*** co.tact force between the flexible drilling pipe and the guide tube is randomly *** co.tact force between the guide tube and the wellbore in the oblique section is greater than that in the vertical *** the hole inclinations increase,the torque and axial force transmitted to the drill bit gradually decrease.

关键词： Flexible drilling tool beam element universal joint co.tact nonlinear finite element.

Characteristics of breccia lava reservoirs and analysis of their dominant factors: case study of the Xushen gas field located in the Songliao Basin

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Mining Science and Technology 2010年第1期20卷 109-114页

作者： WANG Zhiqiang LIU Chengzhi WANG Wenguang TIAN Zhao LI Minghui SUN Wei co.lege of Resources and Information China University of Petroleum Beijing 102249 China School of Earth Sciences Daqing Petroleum Institute Daqing 163318 China Hulunbei'er Branch co.pany Daqing Oilfield Co. Ltd. Hailaer 021008 China Daqing Yushulin oilfield Development co. Ltd. Daqing 163453 China Drilling Technology Service co.pany No. 1 Daqing Drilling & Exploration Engineering Corporation Daqing 163000 China

Breccia lava is a type of rock in transition between volcanic clastic rock and lava. Its physical properties are co.para-tively special, while the nature of its genesis and the formation of reservoirs, deposits and co.centrations vary co.siderably. In order to disco.er the different genesis for breccia lava reservoirs, our study has been carried out on breccia lava for its rock co.stituents, structures, diagenesis and reco.struction from tectonic movements to mineral depositions. From our analysis, we co.clude that the main type of reservoir is a seco.dary emposieu, where rock co.positions, structures, diagenesis and tectonic action are the major co.tributing factors to the deposition of breccia lava and its properties. Diagenesis co.strained the extent of co.servation of the primary pore of breccia lava and produced seco.dary porosity. The roles of tectonics were played out through the formation co.trolling tectonic fissures inside breccia lava and affected the impermeability of breccia lava fluids. The co.stituents of lava rock determine directly the type of diagenesis and its response to tectonic action. At the time of appropriate rock co.position and structures, co.structive formation occurred to breccia lava. Breccia lava also responded proactively to tectonic movements, forming the best quality co.lective reservoir agglomerations of vast spaces and strong permeability.

关键词： breccia lava diagenesis volcanic rock reservoir

Key theoretical and technical issues and co.ntermeasures for effective development of Gulong shale oil, Daqing oilfield, NE China

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Petroleum Exploration and Development 2023年第3期50卷 638-650页

作者： YUAN Shiyi LEI Zhengdong LI Junshi YAO Zhongwen LI Binhui WANG Rui LIU Yishan WANG Qingzhen CNPC Advisory Center Beijing 100724China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China PetroChina Daging oilfield co. Ltd.Daging 163002China

Aiming at the four issues of underground storage state,exploitation mechanism,crude oil flow and efficient reco.ery,the key theoretical and technical issues and co.ntermeasures for effective development of Gulong shale oil are put *** key exploration and research on fluid occurrence,fluid phase change,exploitation mechanism,oil start-up mechanism,flow regime/pattern,exploitation mode and enhanced oil reco.ery(EOR)of shale reservoirs with different storage spaces,multi-scale occurrence states of shale oil and phase behavior of fluid in nano co.fined space were provided,the multi-phase,multi-scale flow mode and production mechanism with hydraulic fracture-shale bedding fracture-matrix infiltration as the co.e was clarified,and a multi-scale flow mathematical model and reco.erable reserves evaluation method were preliminarily *** feasibility of development mode with early energy replenishment and reco.ery factor of 3o%was *** on these,the researches of key theories and technologies for effective development of Gulong shale oil are proposed to focus on:(1)in-situ sampling and non-destructive testing of co.e and fluid;(2)high-temperature,high-pressure,nano-scale laboratory simulation experiment;(3)fusion of multi-scale multi-flow regime numerical simulation technology and large-scale application software;(4)waterless(co.(2))fracturing technique and the fracturing technique for increasing the vertical fracture height;(5)early energy replenishment to enhance oil reco.ery;(6)lifecycle technical and eco.omic ***,a series of exploitation tests should be performed on site as soon as possible to verify the theoretical understanding,optimize the exploitation mode,form supporting technologies,and provide a generalizable development model,thereby supporting and guiding the effective development and production of Gulong shale oil.

关键词： Gulong shale oil co.tinental shale oil nano co.fined space production mechanism flow mode early energy replenishment enhanced oil reco.ery

In-situ hydrocarbon formation and accumulation mechanisms of micro- and nano-scale pore-fracture in Gulong shale, Songliao Basin, NE China

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Petroleum Exploration and Development 2023年第6期50卷 1269-1281页

作者： WANG Xiaojun CUI Baowen FENG Zihui SHAO Hongmei HUO Qiuli ZHANG Bin GAO Bo ZENG Huasen National Key Laboratory of co.tinental Shale Oil Daqing 163002China PetroChina Daqing oilfield co. Ltd.Daqing 163002China PetroChina Daqing oilfield Exploration and Development Research Institute Daqing 163712China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China

By co.ducting experimental analyses, including thermal pyrolysis, micro-/nano-CT, argon-ion polishing field emission scanning electron microsco.y (FE-SEM), co.focal laser scanning microsco.y (CLSM), and two-dimensional nuclear magnetic resonance (2D NMR), the Gulong shale oil in the Songliao Basin was investigated with respect to formation model, pore structure and accumulation mechanism. First, in the Gulong shale, there are a large number of pico.algae, nano-algae and dinoflagellates, which were formed in brackish water environment and co.stituted the hydrogen-rich oil source materials of shale. Seco.d, most of the oil-generating materials of the Qingshankou Formation shale exist in the form of organo-clay co.plex. During organic matter thermal evolution, clay minerals had double effects of suppression and catalytic hydrogenation, which expanded shale oil window and increased light hydrocarbon yield. Third, the formation of storage space in the Gulong Shale was related to dissolution and hydrocarbon generation. With the diagenesis, micro-/nano-pores increased, pore diameter decreased and more bedding fractures appeared, which jointly gave rise to the unique reservoir with dual media (i.e. nano-scale pores and micro-scale bedding fractures) in the Gulong shale. Fourth, the micro-/nano-scale oil storage unit in the Gulong shale exhibits independent oil/gas occurrence phase, and shows that all-size pores co.tain oils, which occur in co.densate state in micropores or in oil-gas two phase (or liquid) state in macropores/mesopores. The understanding about Gulong shale oil formation and accumulation mechanism has theoretical and practical significance for advancing co.tinental shale oil exploration in China.

关键词： micro- nano-scale oil storage unit hydrocarbon occurrence phase organo-clay co.plex in-situ hydrocarbon accumulation Gulong shale oil Cretaceous Qingshankou Formation Songliao Basin

Division of Matrix- and Fracture-Type Shale Oils in the Jiyang Depression and Their Differences

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Acta Geologica Sinica(English Edition) 2015年第6期89卷 1963-1972页

作者： NING Fangxing WANG Xuejun HAO Xuefeng ZHU Deyan ZHU Deshun Geoscience Institute Shengli Oilfield CompanySINOPEC

This study discussed the division of matrix- and fracture-type shale oils in the Jiyang Depression, and proposed the co.cept of fracture development co.fficient. The fracture development co.fficient is defined as the ratio of fault throw to the distance between a shale oil well and the nearest fault. Based on co.2 co.tent, state of water, oil production and logging response of shale oil formations, the classification of shale oils was established, i.e., a fracture-type shale oil well has a fracture development co.fficient greater than 0.2, while a matrix-type one has a fracture development co.fficient less than 0.2. Furthermore, the key co.trol factors of matrix- and fracture-type shale oil enrichment were analyzed using typical anatomical and statistical methods. For matrix-type shale oil enrichment, these factors are lithofacies, total organic carbon（TOC）, shale porosity and abnormal pressure; for fracture-type shale oil enrichment, they are lithofacies, extent of fracture development, and abnormal pressure. This study also first described the differences between matrix- and fracture-type shale oils. The results provide reference for the exploration of terrestrial faulted basins in eastern China.

关键词： shale oil matrix-type fracture-type main co.trol factor enrichment difference JiyangDepression

Seismic Imaging of the Sedimentary System of the Upper Cretaceous Nenjiang Formation in the Northern Songliao Basin

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Journal of Earth Science 2019年第4期30卷 788-798页

作者： Wuling Mo Chaodong Wu Nan Su Shun Zhang Mingzhen Wang School of Earth and Space Sciences Peking UniversityBeijing 100871China PetroChina Exploration and Development Research Institute Langfang 257000China Exploration and Development Research Institute of Daqing oilfield co. Ltd. Daqing 163712China

This paper studied seismic imaging of the sedimentary system of the Nenjiang Formation in the Northern Songliao Basin based on seismic sedimentology. An accurate and detailed depiction and explanation is provided for underground geological bodies within a relative geological period using the stratal slice technology,based on three-order sequence co.relations of well logging and seismic data for the purpose of obtaining high-resolution pictures of the sedimentary system. Research results have revealed that the sedimentary system of the Upper Cretaceous Nenjiang Formation in the Northern Songliao Basin includes meandering streams,anastomosing streams,lake deltas,and sediment gravity flow channels. Based on seismic imaging analysis,the genesis and seismic geomorphology of the sedimentary system of the Nenjiang Formation are explored in order to understand the spatial distribution of typical sedimentary bodies and the evolution of streams in the Nenjiang Formation. Acco.ding to the research results,the sedimentation of the Nenjiang Formation was subject to the delta system in the east and northeast of the formation. The provenance in the northeastern part played a dominant role during the deposition of the Nenjiang Formation for some time;after the earlier maximum flooding in the seco.d and third members of the Nenjiang Formation,the northeastern system began to decline and was gradually replaced by the eastern system. Stratal slices have revealed that a well-developed gravity flow channel system was developed in the first member of the Nenjiang Formation,and massive slip blocks occurred in the seco.d and third members of the formation. The research results indicated that the large gravity flow channel system in the first member of the Nenjiang Formation was formed by streams that emptied directly into the lake;and the slip blocks in the seco.d and third members were the results of gravity sliding of sediments along steep slopes at the delta front.

关键词： seismic sedimentology stratal slice sedimentary system Nenjiang Formation Songliao Basin

Current Situation and Development of China's Drilling Platform

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China Oil & Gas 2007年第4期14卷 34-37,39页

作者： Huang Yuehua Ren Keren Baoji oilfield Machinery co. Ltd.（BOMCO）

With the co.tinuous and rapid growth of China’s eco.omy, the shortage of oil and gas resources supply has beco.e a main co.tradiction hindering the development of eco.omy. In order to increase the occupancy of oil and gas resources, it has beco.e a strategic emphasis to explore the offshore oil and gas resources. The offshore drilling equipment industry is a muster of enterprises,

关键词：中国能源工业钻探平台石油勘探

Significance of Petroleum Equipment Industry and Its Development Orientation

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China Oil & Gas 2013年第2期20卷 27-31页

作者： Shen Dachun CNPC Baoji oilfield Machinery co. Ltd.

With the co.tinuous and fast growth of China’s eco.omy, the demand for oil and gas resources is growing rapidly. The high dependency on imported oil and gas has beco.e an important factor that influences national eco...

关键词：石油装备天然气资源产业国家经济安全中国经济可持续发展能源战略石油设备

China-made Rigs Enter International Market

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China Oil & Gas 2006年第2期13卷 40-43页

作者： Zhang Yongze Chen Liren Baoji oilfield Machinery co. Ltd. （BOMCO）

Nowadays, China＇s drilling equipment manufacturing has formed into a sophisticated industrial chain, playing an indispensable role in supporting China＇s petroleum industry. Especially in recent years, apart from satisfying the requirements of domestic onshore drilling operations, the state-of-the-art drilling equipments like offshore modular drilling rigs, 9000 meter ultra-deep rigs have also been successfully manufactured, this, together with the wholesale export of electric drilling rigs to the overseas market, has ranked China as a primary manufacturer of drilling equipments in the world. China can now wholesale produce series of onshore and offshore drilling equipment with rig production of nearly 200 per year. The production capacity acco.nts for 20%-25% of the world total. In addition to satisfying domestic market, China made onshore drilling rigs have also gained great co.petitive advantages in the international market.

关键词：中国钻进设备国际市场石油工业竞争优势