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Fluid Dynamics & Materials Processing 2024年第8期20卷 1915-1924页

作者： Guochen Xu Taizhou oil production plant Sinopec East China Oil and Gas CompanyTaizhou225300China

Microscopic pore structure in continental shale oil reservoirs is characterized by small pore throats and complex *** adsorption behavior of hydrocarbons on the pore walls exhibits unique physical and chemical ***,studying the adsorption morphology of hydrocarbon components in nanometer-sized pores and clarifying the exploitation limits of shale oil at the microscopic level are of great practical significance for the efficient development of continental shale *** this study,molecular dynamics simulations were employed to investigate the adsorption characteristics of various single-component shale oils in inorganic quartz fissures,and the influence of pore size and shale oil hydrocarbon composition on the adsorption properties in the pores was *** results show that different molecules have different adsorption capacities in shale oil pores,with lighter hydrocarbon components(C6H14)exhibiting stronger adsorption *** the same adsorbed molecule,the adsorption amount linearly increases with the increase in pore diameter,but larger pores contribute more to shale oil *** shale pores,the thickness of the adsorption layer formed by shale oil molecules ranges from 0.4 to 0.5 nm,which is similar to the width of alkane *** oil in the adsorbed state that is difficult to be exploited is mainly concentrated in the first adsorption *** them,the volume fraction of adsorbed shale oil in 6 nm shale pores is 40.8%,while the volume fraction of shale oil that is difficult to be exploited is 16.2%.

关键词： Shale oil utilization limit micro adsorption molecular dynamics simulation

Quantitative investigation of nanofluid imbibition in tight oil reservoirs based on NMR technique

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Petroleum Science 2022年第5期19卷 2185-2198页

作者： Tian-Tian Zhang Zhi-Ping Li Caspar Daniel Adenutsi Yong-Zhou Wei Zhen-Fu Ma Qing You School of Energy Resources China University of GeosciencesBeijing10083China Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering Beijing10083China Core and Rock Properties Laboratory Department of Petroleum EngineeringFaculty of Civil and Geo-EngineeringKwame Nkrumah University of Science and TechnologyKumasiGhana Binnan oil production plant Shengli Oilfield CompanySINOPECBinzhou256606ShandongChina hekou oil production plant Shengli Oilfield CompanySINOPECDongying257200ShandongChina

Nanofluids have been effective chemical additives for enhanced oil recovery(EOR)in tight oil reservoirs due to their special ***,oil imbibition recoveries vary for different *** oil/water distribution in rocks during imbibition using various nanofluids was less discussed in previous *** this study,we systematically examined the imbibition efficiencies of various nanofluids at60℃.Furthermore,the migration of nanofluids and oil distribution in the rock pores were monitored using nuclear magnetic resonance(NMR).The nanofluids were prepared by dispersing silica nanoparticles and five different types of surfactants i.e.,anionic-nonionic,anionic,nonionic,amphoteric and cationic surfactants in deionized(DI)***,interfacial tension(IFT)and contact angle measurements were conducted to reveal the underlying EOR mechanisms of various *** experimental results showed that the EOR potential of the different types of nanofluids was in the order anionic-nonionic>anionic>nonionic>amphoteric>cationic>***-nonionic(sodium lauryl ether sulfate(SLES))and anionic(sodium dodecyl sulfonate(SDS))nanofluids exhibited excellent capability of wettability alteration,and increased oil recovery by 27.96%and 23.08%,respectively,compared to *** NMR results also showed that mesopores(0.1-1μm)were the dominant developed pores in the rocks,and contributed the most to imbibition *** addition,the imbibition of nanofluids initially took place in mesopores and micropores before moving into *** study provides fundamental information on the selection of nanofluids for EOR in tight oil *** study also improved the understanding of oil/water distribution during the imbibition of the proposed nanofluids.

关键词： Nanofluids Spontaneous imbibition Nuclear magnetic resonance(NMR) oil migration Tight oil reservoir

The influence of water disposal method on the property of chemical oil-displacement agent–taking Guan 109-1 area of Dagang oilfield as example

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Petroleum 2018年第1期4卷 50-55页

作者： Shengwang Yuan The Second oil production plant of Daqing oilfield Daqing163318China

Aiming at the actual demand of Guan 109-1 block in Dagang oilfield,by means of instrumental analysis,chemical analysis,modern physical simulation,viewing polymer viscosity and seepage characteristic as evaluation index,the experimental research on the influence of water disposal method on the property of chemical oil-displacement agent was carried *** showed that through adding scaling agent,scale was formed because of the reaction between scaling agent and Ca^2+,Mg^2+ in the flooding water,which could enhance the viscosity of polymer *** comparing the resistance factor and residual resistance factor of polymer solution which was respectively prepared with flooding water,softened water and scale,the resistance factor and residual resistance factor of polymer solution with scale was the largest,that of polymer solution prepared with softened water was second and that of polymer solution prepared with flooding water came ***,scaling agent weakened the gelling effect between cross-linking agent Cr^3+ and polymer molecule *** earlier the crosslinking agent Cr^3+ was added,the larger the polymer viscosity,resistance factor and residual resistance factor of Cr3t polymer were.

关键词： Seepage characteristic Water disposal Scaling agent Resistance factor and residual resistance factor

Structural geometrical analysis and simulation of decollement growth folds in piedmont Fauqi Anticline of Zagros Mountains, Iraq

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Science China Earth Sciences 2016年第9期59卷 1885-1898页

作者： OU ChengHua CHEN Wei LI ChaoChun ZHOU WenJiang State Key Laboratory of oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University State-owned Asset Management Office Southwest Petroleum University Zhundong oil production plant Xinjiang Oilfield Company

This study carried out detailed structural analyses of the plane structural deformation pattern and sectional structural deformation styles of the Fauqi Anticline by the 3D seismic section with full cover collection, and carried out the kinematical simulation of the Fauqi anticlinal deep decollement coupling shallow growth folds and faults based on the fault decollement fold model and the forward balanced geological section technique. The study subsequently evaluated the differentiated petroleum enrichment mechanism of the Fauqi Anticline by utilizing the results of the structural analysis and combining the spatial-temporal relationship analysis of the source, the reservoir, and the caprock. The results showed that the differentiated plane structural deformation pattern and hierarchical sectional structural deformation style were developed by the superposed coupling of deep decollement, syntectonic sedimentation of shallow growth strata, and the compression of the south-west horizontal tectonic stress from the Zagros Mountains. It was found that the differentiated structural deformation caused the differentiated enrichment of petroleum in the Fauqi Anticline. It was also found that the horizontal slip distance of the Fauqi Anticlinal Folds reached around 3.5 km by the simulation of deep decollement coupling the movement of the shallow growth folds and the faults.

关键词： Fauqi Anticline Decollement Growth fold Geometrical analysis of structures Kinematical simulation Petroleum enrichment Zagros Mountains

Reservoir Characteristics of Fine-grained Sedimentary Rocks in Saline Lakes in the Cenozoic Upper Ganchaigou Formation,Southwestern Qaidam Basin,NW China

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Acta Geologica Sinica(English Edition) 2022年第3期96卷 1070-1081页

作者： SHENG Jun LIU Jincheng LI Yunlong ZOU Haiyan LONG Anlin WANG Lin LI Jiyong QI Qingshan YANG Xiaojing LI Yanan Exploration&Development Research Institute of PetroChina Qinghai oilfield Company DunhuangGansu 736200China No.2 oil production plant of PetroChina Qinghai oilfield Company DunhuangGansu 736200China No.1 oil production plant of PetroChina Qinghai oilfield Company DunhuangGansu 736200China

Cenozoic fine-grained sedimentary rocks in the southwestern Qaidam Basin,as typical salinized lacustrine sediments,are significantly different from those in other freshwater lakes under the impact of the high salinity in the *** fine-grained sedimentary rock samples were selected from the lower member of Neogene(N_(1))in the Gaskule oilfield,Qaidam Basin,northwest China,with the aim to analyze and test their petrology,pore structure,and organic geochemical characteristics and determine its genesis and geological *** on previous results,a new genesis of mixed sedimentary rocks is *** Cenozoic lacustrine fine-grained sedimentary rocks in SW Qaidam Basin belong to mixed sedimentary rocks,which can be divided into three types,including carbonate and terrigenous clastic-bearing mudstone,carbonate-bearing to terrigenous clastic mixed sedimentary rocks,and carbonate-terrigenous clastic mixed sedimentary *** geneses of mixing are quite different from that of mixed marine *** to the sedimentary characteristics of the salinized lakes,three new geneses of mixed deposits are proposed:syn-sedimentary mixing,varve interbedded mixing,and biogenic *** reservoir spaces of the Cenozoic lacustrine fine-grained sedimentary rocks in SW Qaidam Basin include residual intergranular pores,intercrystalline pores,microfractures,and minor dissolved *** reservoirs have super-low porosity and ultra-low permeability,with a porosity of 1.82%-21.04%,averaging 7.71%,and permeability of(0.0028-254.86)×10^(−3)μm^(2),averaging 2.82×10^(−3)μm^(2).The test results of total organic carbon(TOC)content show that the highest content of organic carbon reached 1.41%,and those of vitrinite reflectance show that Ro ranges from 0.525%-0.824%,with an average of 0.806%.The organic geochemical characteristics show that the fine-grained mixed sedimentary rocks of SW Qaidam Basin have the potential for self-generation and *** an unconventional re

关键词： energy resources unconventional reservoir sedimentary petrology organic geochemistry salinization lacustrine sediments Neogene

Fracture Mechanism of the Formation with a Natural Flaw Under a Single-Tooth Cutting

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Acta Mechanica Solida Sinica 2020年第5期33卷 719-730页

作者： Siqi Li Wei Li Tie Yan Fuqing Bi Huan Zhao Xin Ling Institute of Petroleum Engineering Northeast Petroleum UniversityDaqing163318HeilongjiangChina The Fifth oil production plant of Daqing oilfield Daqing163513HeilongjiangChina

The process of a single-tooth cutting formation is taken as the representative to analyze the fracture mechanism of the formation with natural flaws under the PDC drill *** modeling of the stress field distribution of the formation under a single tooth is proposed ***,the modeling of the stress intensity factor K,T-stress and the initiation angleθof the flaw under two far-field compressive loads in two cases are presented based on the mode-II ***,the results of theoretical calculations and simulations are given and *** on the analysis undertaken,it can be concluded that the confinement ratioλapplying on the flaw changes nonlinearly with the variation inα+φ.The relationship between the dimensionless ratioβx/βy of T-stress and the rotational polar angleφis a parabola with an upward *** the direction of the cutting force is consistent with the flaw,the stress intensity factor K and the initiation angleθat the tip of the flaw reach the *** addition,the angle between the cutting force and the flaw weakens the T-stress and inhibits the crack initiation and propagation of the *** results of numerical simulations show good agreement with theoretical calculations.

关键词： Single-tooth cutting Stress field Stress intensity factor Initiation angle Extended finite element

A novel method for predicting breakthrough time of horizontal wells in bottom water reservoirs

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Journal of Central South University 2013年第12期20卷 3612-3619页

作者：李立峰岳湘安赵海龙杨志国张立娟 MOE Key Laboratory of Petroleum Engineering in China (University of Petroleum) 1st oil production plant of Jiangsu oilfield Company SINOPEC

Dimensional analysis and numerical simulations were carried out to research prediction method of breakthrough time of horizontal wells in bottom water reservoir. Four dimensionless independent variables and dimensionless time were derived from 10 influencing factors of the problem by using dimensional analysis. Simulations of horizontal well in reservoir with bottom water were run to find the prediction correlation. A general and concise functional relationship for predicting breakthrough time was established based on simulation results and theoretical analysis. The breakthrough time of one conceptual model predicted by the correlation is very close to the result by Eclipse with less than 2% error. The practical breakthrough time of one well in Helder oilfield is 10 d, and the predicted results by the method is 11.2 d, which is more accurate than the analytical result. Case study indicates that the method could predict breakthrough time of horizontal well under different reservoir conditions accurately. For its university and ease of use, the method is suitable for quick prediction of breakthrough time.

关键词： reservoirs with bottom water breakthrough time of horizontal well prediction method dimensional analysis numericalsimulation

The Design and Implementation of a Network Virtual Simulation System

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The Design and Implementation of a Network Virtual Simulatio...

Distributed Interactive 3D Combat Simulation System for the Army Training and Testing

第25届中国控制与决策会议

作者： Zehua Li Lingguo Cui Senchun Chai Guolong Zhang School of Automation Beijing Institute of Technology The First oil Producing Region of Liaohe oilfield Ciyutuo Zhen Oil Production Plant

ISBN: (纸本)9781467355339

With the rapid development of the network technology, a simulation based on web has been attracting more and more attention from academic and industrial field in recent years. Comparing with the traditional simulation environment, it has many advantages such as low cost, easy maintenance, portability and so on. To meet the new requirements of the simulation, this paper presents a web-based virtual simulation system based on the B/S architecture. A tradition simulation platform (MATLAB/Simulink) is directly ported to the web in this work with friendly user interface and a powerful simulation capacity. In order to improve the quality of the web user interface, AsWing which is a set of UI components that developed by the script of Flash: AcitonScript is utilized. The simulation task information is transferred from the user interface to the MySQL database through the Servlet. A center simulation platform (MATLAB/Simulink) is employed to reconstruct the simulation from the information stored in the database. The simulation result will be sent back to the database and the web user interface through the Internet. The whole structure of the proposed simulation environment was introduced in this work and a demonstration simulation result was given to show the performance of the provided system.

关键词： web-based simulation MATLAB/Simulink B/S architecture Aswing.

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Distributed Interactive 3D Combat Simulation System for the ...

Diageneses and Their Influences on Reservoir Properties of Chang 2 oil Member in Renshan Region, Zhidan oilfield, Ordos Basin

第25届中国控制与决策会议

作者： Fei Yao Lingguo Cuig Senchun Chaig Guolong Zhan School of Automation Beijing Institute of Technology The First oil Producing Region of Liaohe oilfield Ciyutuo Zhen Oil Production Plant

ISBN: (纸本)9781467355339

3D Based Distributed Interactive Simulation （3DDIS） for Simulation of Virtual Battlefield Environment （VBE） is attracting more and more attention from both academic and industrial communities. With fast development of network technology, 3DDIS has shown unique advantages and broad applications comparing with the traditional simulation technology. A 3DDIS platform was proposed in this work for military simulation to simulate the warfare on the land. The whole system can generally be categorized into four subsystems such as: the scene construction of virtual battlefield, model-making, model-driven and database management. To demonstrate the performance of the provided platform, a constructed battlefield was used. From the simulation results, the whole simulation system can provide the user with accurate and actual field intelligence for great strategic decision in joint military exercise.

关键词： distributed Unity 3D simulation battlefield modeling database

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Acta Geologica Sinica(English Edition) 2017年第S1期91卷 142-143页

作者： YANG Kang ZHOU Xue LI Hong XIE Wei DONG Yangkun LIU Yongjie SONG Shijun ZHAO Leizhao Department of Geology Northwest University Yongning oil production plant Yanchang Oilfield Co.Ltd

1 Introduction Yanchang Formation in Upper Triassic,Ordos basin contains the most abundant hydrocarbon resources in North China(Wang et al.,2014).The sandstones are the most important oil-bearing reservoirs in Yanchang

关键词： Zhidan oilfield SEM Ordos Basin Diageneses and Their Influences on Reservoir Properties of Chang 2 oil Member in Renshan Region