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Preliminary study on nanopores,nanofissures,and in situ accumulation of Gulong shale oil

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地学前缘 2023年第1期30卷 260-280页

作者： he wenyuan Daqing Oilfield Co Ltd Daqing 163002China heilongjiang Provincial Key Laboratory of Continental Shale Oil Daqing 163712China

The Qingshankou Formation shale oil in the Gulong Sag is an important oil and gas reservoir in the Daqing oilfield,with geological resources of 15.1 billion *** fabric of shale can reflect not only its genesis but also the nature of the reservoir space,its physical properties,oil content,and development ***,the characteristics of clay minerals in the Gulong shale oil reservoir were studied via electron microscopy,with the primary focus on the microfabrics and reservoir space;thereafter,the in situ accumulation was studied and *** backscattering patterns revealed that nanometer pores and fissures were well developed in the Gulong shale oil *** nano pores were mostly 20-50 nm in diameter(median 20-30 nm),irregularly shaped,mostly,polygonal,and connected with *** widths of nanofissures ranged mostly between 10-50 nm(median 20-30 nm);moreover,these fissures were mainly formed by F-F condensation of clay sheets(clay domains).The coagulation of clays was closely related to organic matter,especially *** clay colloids were negatively charged due to isocrystalline replacement;hence,metal cations were absorbed around the clay,forming a positive clay *** positively charged clays subsequently adsorbed negatively charged humic acid(organic matter)and initially degraded algae to form an organic clay *** the organic clay flocculates reached the threshold for hydrocarbon generation and expulsion,the volume of organic matter decreased by 87%;thereafter,the generated and expelled hydrocarbon filled the nearby pores formed by this ***,the discharged hydrocarbon could not migrate due to capillary resistance(~12 MPa)of the nanopores;hence,the nanopores formed a unique continuous in situ reservoir within the Gulong shale *** study demonstrated that the Gulong shale oil reservoir is an actual clay-type shale reservoir with numerous nanopore and *** coagulation,a large amount of orga

关键词： shale clay organic matter nanopores nanofissures in situ accumulation Gulong Sag

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Restoration of Eroded Thickness of the Neogene Strata in the Western Qaidam Basin and Its Significance for Oil and Gas Occurrence

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Acta Geologica Sinica(English Edition) 2017年第4期91卷 1352-1362页

作者： SUN Ping GUO Zeqing he wenyuan LIU Weihong Advisory Center of CNPC Beijing 100724 China Langfang Branch Research Institute of Petroleum Exploration and Development CNPC Langfang 065007 Hebei China Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China

During the Pleistocene, the western Qaidam Basin has largely experienced strong structural reconstruction and strong erosion. First, the eroded thickness of Neogene strata was restored approximately by the stratigraphic profile comparison method and plane trend surface restoring method; then, accurate calculation of erosion was recovered using vitrinite reflectance, and the erosion that was restored by the trend surface restoring method was corrected; finally, a distribution map of cumulative erosion was produced. This study marks an important achievement in that one of the most important parameters of basin tectonic evolution, sedimentary evolution, and oil and gas accumulation history has been obtained, and that a basic geological problem has been solved in the Qaidam Basin. The areas with high erosion and low erosion are shown in the map and a close relation between the distribution of oil and gas fields and erosion was recognized. Large and medium oil and gas fields are mainly distributed in areas with medium and low erosion. It is difficult to form large-scale oil and gas accumulation in areas in which erosion is more than 2000 m. The mechanism of the relation between oil and gas distribution and erosion is explained. This study will be of use in predicting the distribution of oil and gas.

关键词： western Qaidam Basin eroded thickness restoration method distribution characteristics,significance for oil and gas occurrence

Field testing of shear strength of granite residual soils

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第9期16卷 3718-3732页

作者： Song Yin Pengfei Liu Xianwei Zhang wenyuan he Pan Yan Yuzhou Sun School of Civil Engineering and Architecture Zhongyuan University of TechnologyZhengzhou450007China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China

The characteristics of residual soils are very different from those of sedimentary *** the strength characteristics of sedimentary soils have been studied extensively,the shear strength characteristics of granitic residual soils(GRS)subjected to the weathering of parent rocks have rarely been *** this study,the shear strength characteristics of GRS in the Taishan area of southeast China(TSGRS)were studied by field and laboratory *** field tests consisted of a cone penetration test(CPT),borehole shear test(BST),self-boring pressuremeter test(SBPT),and seismic dilatometer Marchetti test(SDMT).The shortcomings of laboratory testing are obvious,with potential disturbances arising through the sampling,transportation,and preparation of soil *** to the special structure of GRS samples and the ease of disturbance,the results obtained from laboratory tests were generally lower than those obtained from situ *** CPT and scanning electron microscopy(SEM)results indicated significant weathering and crustal hardening in the shallow *** resulted in significant differences in the strength and strength parameters of shallow soil obtained by the *** on the SDMT and SBPT results,a comprehensive evaluation method of shear strength for TSGRS was *** SBPT was suitable for evaluating the strength of shallow *** material index(ID)and horizontal stress index(KD)values obtained by the SDMT satisfied the empirical relationship proposed by Marchetti based on the ID index,and were therefore considered suitable for the evaluation of the shear strength of deep GRS.

关键词： Granite residual soils Shear strength Field tests Self-boring pressuremeter Seismic dilatometer Borehole shear test

The Geoscience Frontier of Gulong Shale Oil:Revealing the Role of Continental Shale from Oil Generation to Production

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Engineering 2023年第9期28卷 79-92页

作者： wenyuan he Rukai Zhu Baowen Cui Shuichang Zhang Qian Meng Bin Bai Zihui Feng Zhengdong Lei Songtao Wu Kun he he Liu Longde Sun China National Oil and Gas Exploration and Development Company Ltd. Beijing 100027China Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China Key Laboratory of Shale Oil Accumulation of heilongjiang Province Daqing 163712China Daqing Oilfield Company Ltd. PetroChinaDaqing 163712China China National Petroleum Corporation Beijing 100007China

The clay mineral content of Daqing Gulong shale is in the range of about 35%–45%,with particle sizes less than 0.0039 *** horizontal fluidity of oil in Gulong shale is poor,with near-zero vertical *** a result,Gulong shale has been considered to lack commercial *** recent years,however,interdisciplinary research in geoscience,percolation mechanics,thermodynamics,and surface mechanics has demonstrated that Gulong shale oil has a high degree of maturity and a high residual hydrocarbon *** expulsion efficiency of Gulong shale in the high mature stage is 32%–48%.Favorable storage spaces in Gulong shale include connecting pores and lamellar fractures developed between and within organic matter and clay mineral *** shale oil mainly occurs in micro-and nano-pores,bedding fractures,and lamellar fractures,with a high gas–oil ratio and medium–high movable oil *** shale has the characteristics of high hardness,a high elastic modulus,and high fracture *** study achieves breakthroughs in the exploration and development of Gulong shale,including the theories of hydrocarbon generation and accumulation,the technologies of mobility and fracturing,and *** confirms the major transition of Gulong shale from oil generation to oil production,which has extremely significant scientific value and application potential for China’s petroleum industry.

关键词： Gulong shale Gulong shale oil Micro-nano pores Lamellar fracture Continental oil production

The eff ect of Rhizophagus irregularis on salt stress tolerance of Elaeagnus angustifolia roots

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Journal of Forestry Research 2020年第6期31卷 2063-2073页

作者： wenyuan he Xiaoxu Fan Zixin Zhou Huanhuan Zhang Xiang Gao Fuqiang Song Gui Geng Engineering Research Center of Agricultural Microbiology Technology Ministry of EducationHeilongjiang UniversityHarbin 150080China heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region School of Life SciencesHeilongjiang UniversityHarbin 150080China

We assessed the eff ects of arbuscular mycorrhizal fungi(AMF)Rhizophagus irregularis inoculation on salt stress tolerance in roots of the drought-tolerant plant Elaeagnus *** studied a plant growth index,spore density and hyphal length density of AMF,the Na+contents and ultrastructure of root cells,as well as rhizosphere soil enzyme activities of mycorrhizal and non-mycorrhizal *** seedlings under diff erent salt *** salt stress,growth of *** with mycorrhizal inoculation was higher than that of non-inoculated *** spore density and hyphal length density decreased signifi cantly under salt stress in rhizosphere soil of mycorrhizal *** seedlings(phe root cells of *** seedlings inoculated with *** at 300 mmol L−1 salt had more organelles,greater integrity,and lower root Na+contents than those of non-inoculated *** addition,the results showed notably higher activities of catalase,phosphatase,urease and saccharase in rhizosphere soil of the mycorrhizal seedlings in response to salinity compared to those of the non-mycorrhizal ***,AMF inoculation could enhance salt stress tolerance in roots of ***.

关键词： Salt stress Arbuscular mycorrhizal fungi Elaeagnus angustifolia Na+content Ultrastructure of root cell Soil enzyme

Current Status and Trend of Reservoir Stimulation Techniques of CNPC

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China Oil & Gas 2013年第2期20卷 14-19页

作者： he wenyuan Zhao Zhigang Advisory Center of China National Petroleum Corporation

In recent year, shale gas production has been developed dramatically in USA. The American annual production from shale gas reservoir has increased by 6 times in the past six years, it was about 2×10 11 m 3 in 2012.

关键词：增产技术发展趋势中石油水库页岩气致密储层美国

West-East Gas Pipeline Project

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Frontiers of Engineering Management 2020年第1期7卷 163-167页

作者： Junqiang ZHANG Honglong ZheNG wenyuan he Weihe HUANG PetroChina West-East Gas Pipeline Branch Shanghai 200122China PetroChina Pipeline R&D Center Langfang 065000China PetroChina Consulting Center Beijing 100724China PetroChina Co. Ltd.Beijing 100007China

1 Overview The West-East Gas Pipeline Project is alandmark project of China's Western *** February 2000,the State Council approved the launch of the West-East Gas Pipeline Project,which was constructed by the China Na... 详细信息

关键词： pipeline construction pipe network operation

An analysis of major scientific problems and research paths of Gulong shale oil in Daqing Oilfield, NE China

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Petroleum Exploration and Development 2021年第3期48卷 527-540页

作者： SUN Longde LIU he he wenyuan LI Guoxin ZHANG Shuichang ZHU Rukai JIN Xu MENG Siwei JIANG Hang PetroChina Daqing Oilfield Co.Ltd. Daqing 163002China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China PetroChina Exploration&Production Company Beijing 100724China

After the preliminary basic research on the problems encountered during the production period of Gulong shale oil in the Songliao Basin, NE China, and the scientific exploration, the special characteristics of Gulong shale oil in terms of reservoir space, phase distribution, flow pattern, and mineral evolution are proposed. The main results are as follows :(1) The source of organic matter, mechanism of hydrocarbon generation and expulsion, and key factors affecting shale oil abundance;(2) The types and structural characteristics of the reservoir and their contribution to porosity and permeability;(3) The mineral origin and evolution of minerals and their influence on reservoir availability, sensitivity, and compressibility;(4) The rock mechanical characteristics and fracture propagation law of Gulong shale;(5) The shale oil products, phase change law and main control factors of adsorption and desorption conversion of Gulong shale oil;(6) The mechanism of shale oil-liquid, solid-liquid gas interaction and enhanced oil recovery. Three key research suggestions are proposed to realize the large-scale economic utilization of the Gulong shale oil as follows:(1) Deepen research on the mechanism of oil and gas generation and discharge, storage and transportation, to guide the selection of geological sweet spots of shale oil;(2) Deepen research on the compressibility and fracture initiation mechanism to support the selection of engineering sweet spots and optimization of engineering design;(3) Deepen research on the fluid interaction mechanism under reservoir conditions, os us to guide the optimization of development schemes and the selection of EOR technologies. A successful development of Gulong shale oil requires global experts and scholars to contribute multidisciplinary innovative ideas and technical ideas to solve production problems.

关键词： Songliao Basin Gulong Sag continental shale oil resource endowment reservoir characteristics scientific problem research direction

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哈贝马斯与布兰顿的对话:交互主体与世界

东南学术 2022年第1期 75-82页

作者：何文苑南开大学哲学院

思维与存在的关系问题是近代以来的哲学基本问题。哈贝马斯与布兰顿的直接交锋显现了处理这一问题的困难。他们从交互主体出发来把握世界,前者继承了康德的分离立场,后者从黑格尔的整体思想中汲取理论资源。二者虽然在概念、知觉与世界... 详细信息

思维与存在的关系问题是近代以来的哲学基本问题。哈贝马斯与布兰顿的直接交锋显现了处理这一问题的困难。他们从交互主体出发来把握世界,前者继承了康德的分离立场,后者从黑格尔的整体思想中汲取理论资源。二者虽然在概念、知觉与世界,交互主体内的人称视角,事实与规范等主题上冲突重重,但最终不可避免地在概念化世界的理论根基上走向一致,这意味着思维吞没了存在。如何妥善处理思维与存在这个近代以来的关键问题,仍然是一项未竟的事业。

关键词：哈贝马斯布兰顿交互主体世界