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A Study of the Migration and Accumulation Efficiency and the Genesis of Hydrocarbon Natural Gas in the Xujiaweizi Fault Depression

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Acta Geologica Sinica(English Edition) 2008年第3期82卷 629-635页

作者： LI Jijun LU Shuangfang XUE Haitao HUO Qiuli XU Qingxia College of Earth Sciences Daqing Petroleum Institute Daqing Heilongjiang 163318 exploration and development Research institute of the daqing Oilfield Company Ltd. Daqing Heilongjiang 163712

In order to investigate the migration and accumulation efficiency of hydrocarbon natural gas in the Xujiaweizi fault depression, and to provide new evidence for the classification of its genesis, a source rock pyrolysis experiment in a closed system was designed and carried out. Based on this, kinetic models for describing gas generation from organic matter and carbon isotope fractionation during this process were established, calibrated and then extrapolated to geologic conditions by combining the thermal history data of the Xushen-1 Well. The results indicate that the coal measures in the Xujiaweizi fault depression are typical ＂high-efficiency gas sources＂, the natural gas generated from them has a high migration and accumulation efficiency, and consequently a large-scale natural gas accumulation occurred in the area. The highly/over matured coal measures in the Xujiaweizi fault depression generate coaliferous gas with a high δ^13C1 value （〉 -20‰） at the late stage, making the carbon isotope composition of organic alkane gases abnormally heavy. In addition, the mixing and dissipation through the caprock of natural gas can result in the negative carbon isotope sequence （δ^13C1 〉δ^13C2 〉δ^13C3 〉δ^13C4） of organic alkane gases, and the dissipation can also lead to the abnormally heavy carbon isotope composition of organic alkane gases. As for the discovery of inorganic nonhydrocarbon gas reservoirs, it can only serve as an accessorial evidence rather than a direct evidence that the hydrocarbon gas is inorganic. As a result, it needs stronger evidence to classify the hydrocarbon natural gas in the Xujiaweizi fault depression as inorganic gas.

关键词： Xujiaweizi fault depression hydrocarbon natural gas migration and accumulation efficiency genesis carbon isotope fractionation kinetics

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Whole petroleum system and hydrocarbon accumulation model in shallow and medium strata in northern Songliao Basin,NE China

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石油勘探与开发:英文版 2023年第4期50卷 784-797页

作者： ZHANG He WANG Xiaojun JIA Chengzao LI Junhui MENG Qi’an JIANG Lin WANG Yongzhuo BAI Xuefeng ZHENG Qiang PetroChina daqing Oilfield Company Limited Daqing 163458China China National Petroleum Corporation Beijing 100724China exploration and development Research institute of PetroChina daqing Oilfield Company Limited Daqing 163712China PetroChina Research institute of Petroleum exploration&development Beijing 100083China exploration Department of PetroChina daqing Oilfield Company Limited Daqing 163453China

Based on the oil and gas exploration practice in the Songliao Basin,combined with the latest exploration and development data such as seismic,well logging and geochemistry,the basic geological conditions,oil and gas types and distribution characteristics,reservoir-forming dynamics,source-reservoir relationship and hydrocarbon accumulation model of the whole petroleum system in shallow and medium strata in the northern part of Songliao Basin are systematically *** shallow-medium strata in northern Songliao Basin have the conditions for the formation of whole petroleum system,with sufficient oil and gas sources,diverse reservoir types and well-developed transport system,forming a whole petroleum system centered on the source rocks of the Cretaceous Qingshankou *** types of oil and gas resources in the whole petroleum system are correlated with each other in terms of depositional system,lithologic association and physical property changes,and they,to a certain extent,have created the spatial framework with orderly symbiosis of shallow-medium conventional oil reservoirs,tight oil reservoirs and shale oil reservoirs in northern Songliao ***,the resources are endowed as conventional oil above source,shale oil/tight oil within source,and tight oil below ***,conventional oil,tight oil,interlayer-type shale oil,and pure shale-type shale oil are developed in an orderly way,from the margin of the basin to the center of the *** hydrocarbon accumulation models are recognized for the whole petroleum system in northern Songliao Basin,namely,buoyancy-driven charging of conventional oil above source,retention of shale oil within source,and pressure differential-driven charging of tight oil below source.

关键词： Songliao Basin super basin whole petroleum system conventional oil reservoir tight oil shale oil hydrocarbon accumulation model orderly distribution differential accumulation

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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 correlations 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. According 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 second 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 second 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 second 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

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Enrichment factors of movable hydrocarbons in lacustrine shale oil and exploration potential of shale oil in Gulong Sag,Songliao Basin,NE China

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Petroleum exploration and development 2023年第3期50卷 520-533页

作者： ZHAO Wenzhi BIAN Congsheng LI Yongxin ZHANG Jinyou HE Kun LIU Wei ZHANG Bin LEI Zhengdong LIU Chang ZHANG Jingya GUAN Ming LIU Shijul ZWZ Academician Research Studio PetroChina Research Institute of Petroleum Exploration&DevelopmentBeijing 100083China PetroChina Research institute of Petroleum exploration&development Beijing 100083China exploration and development Research institute of PetroChina daqing Oilfield Company Daqing 163712China

The geological characteristics and production practices of the major middle-and high-maturity shale oil exploration areas in China are *** with laboratory results,it is clear that three essential conditions,*** initial production,commercial cumulative oil production of single well,and large-scale recoverable reserves confirmed by the testing production,determine whether the continental shale oil can be put into large-scale commercial *** quantity and quality of movable hydrocarbons are confirmed to be crucial to economic development of shale oil,and focuses in evaluation of shale oil enrichment area/*** evaluation indexes of movable hydrocarbon enrichment include:(1)the material basis for forming retained hydrocarbon,including TOC>2%(preferentially 3%-4%),and typeⅠ-Ⅱkerogens;(2)the mobility of retained hydrocarbon,which is closely related to the hydrocarbon composition and flow behaviors of light/heavy components,and can be evaluated from the perspectives of thermal maturity(Ro),gas-oil ratio(GOR),crude oil density,quality of hydrocarbon components,preservation conditions;and(3)the reservoir characteristics associated with the engineering reconstruction,including the main pore throat distribution zone,reservoir physical properties(including fractures),lamellation feature and diagenetic stage,***,13 evaluation indexes in three categories and their reference values are *** evaluation indicates that the light shale oil zones in the Gulong Sag of Songliao Basin have the most favorable enrichment conditions of movable hydrocarbons,followed by light oil and black oil zones,containing 20.8×10^(8) t light oil resources in reservoirs with R_(0)>1.2%,pressure coefficient greater than 1.4,effective porosity greater than 6%,crude oil density less than 0.82 g/cm^(3),and GOR>100 m/m^(3).The shale oil in the Gulong Sag can be explored and developed separately by the categories(resource sweet spot,engineering sweet

关键词： Gulong Sag continental shale oil movable hydrocarbon enrichment factor enrichment zone/interval evaluation material basis component flow engineering-associated factor

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Preparation and properties of physically and chemically cross-linked hybrid hydrophobic association hydrogels with good mechanical strength

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Science China Chemistry 2016年第3期59卷 282-292页

作者： Guoqing Jiang Li Huang Bo Li Quan Zhou Zhiying Li Enhanced Oil Recovery Laboratory Exploration and Development Research InstituteDaqing Oilfield Company LimitedDaqing163712China State Key Laboratory of Enhanced Oil Recovery Petrochina Research Institute of Petroleum Exploration&DevelopmentBeijing100083China Production Engineering&Research institute Daqing Oilfield Company LimitedDaqing163453China College of Chemistry Jilin UniversityChangchun130012China

To correct the defects of hydrophobic association hydrogels （HA-gels）, new physically and chemically cross-linked hybrid hy- drophobic association hydrogels （hybrid HA-gels） were prepared by radical copolymerization of acrylamide （AM）, octylphe- nol polyoxyethylene （n） acrylate （OPnAC, n stands for the number of ethoxy group, and is 10 and 21） and N,N＇-methylene- bisacrylamide （MBA）. On the basis of the statistical molecular theory of rubber elastic, the Mooney-Rivlin model and using the tensile true stress （O＇true） tested at room temperature, the number of network strands per unit volume （o~） and the num- ber-average molar mass of a network strand （Me） were evaluated for hybrid HA-gels. For the hydrogels, the effect of the con- tent of MBA and OP10AC on their tensile mechanical properties was studied by using o0 and Mc; also, the effect of the com- positions and temperature on their swelling behavior in distilled water was discussed in detail. In addition, hybrid HA-gels in- cluding a small quantity of MBA possessed the capabilities of secondary self-healing and remolding. In contrast with HA-gels prepared by the same compositions besides MBA, hybrid HA-gels showed good mechanical strength and long-term thermal stability in distilled water in the range of 25 to 80℃. Furthemore, hybrid HA-gels also avoided the self-deswelling behavior of HA-gels. The results show that the application fields of HA-gels will be greatly broadened after introducing a chemical cross-linking network.

关键词： hydrophobic association hydrogels hybrid hydrogels mechanical properties swelling behavior reforming capability

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SYMMETRIC VORTICAL STRUCTURE AND ITS TOPOLOGICAL STABILITY

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Journal of Hydrodynamics 2005年第5期17卷 552-557页

作者： WANG Gang LIANG Xin-gang GANG Ming-li Department of Engineering Mechanics Tsinghua University Beijing 100084 China exploration and development Research institute PetroChina Daqing Oilfield Company Ltd. Daqing 163712 China

Using time dependent compressible laminar Navier-Stokes equations with a finite volume method incorporating a third-order-accurate discretization scheme, the flow structures around a slender at certain incidences are numerical simulated and typical crossflow patterns are presented. At incidence 10°, these vortical configurations are different at dissimilar axial locations though they are symmetric. At 35°, the symmetric vortical structures still maintain over the slender, yet their interaction at afterbody is intense than that at the forehody since the two vortices have fully developed downstream. The unstable topological structure of trajectory of saddle-to-saddle points and multiple limit cycle are further discussed in topological stability theory. These structures easily produce bifurcation with perturbation. The results support the view of hydrodynamic instability of vortices flow field.

关键词： symmetric vortices slender body flow pattern topological stability flow mechanism

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Architecture of volcanic sequence and its structural control of Yingcheng Formation in Songliao Basin

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Journal of Central South University 2014年第5期21卷 2026-2040页

作者：程日辉王腾飞沈艳杰任延广 College of Earth Sciences Jilin University Research institute of exploration and development Daqing Oilfield Limited Company

Yingcheng Formation is a set of volcanic strata composed of lava rocks,volcanic clastic rocks and sedimentary rocks,filled in some fault depressions in Songliao Basin,early *** study about litho-facies succession of Yingcheng Formation in the outcropped area of the southeast margin and in Xujiaweizi fault depression and its distribution based on analysis of seismic data,shows that the sequence of volcanic strata is quite different from the clastic sedimentary *** study the architecture of volcanic sequence and its structural control of Yingcheng Formation in Songliao Basin,in this work,dividing of the volcanic sequence and dating of the sequence boundaries were finished firstly,then displacement and displacement rate of faults were *** results show that,sample ages of top of the first member,the seconde member,and the third member are 127 Ma,115 Ma,110.7 Ma,respectively and sample age of the bottom of the third member is 114.7 *** maximum displacement and displacement rate of the fault 1 are 3 km and 300 m/Ma,respectively,and those of the fault 2 are 3 km and 1000 m/*** suggest that,the cooling unit of lava rock or pyroclastic rock is a basic genetic stratigraphic unit in volcanic sequence *** units can construct a parasequence reflecting a volcanic eruption stage.A sequence was superimposed by some parasequences,responding to a volcanic active *** are three types of volcanic sequences in Yingcheng Formation: type of explosion,type of effusion and type of mixed *** surface of the volcanic sequence,an unconformity surface widely spread and traced in seismic profiles,is a base for analysis of volcanic *** development of volcanic sequence was controlled by faulting,and the curves of fault displacement(rate)can reflect this *** preservation of volcanic sequence was controlled by the type of volcanic structure and the regional subsidence,also different from that of the se

关键词： volcanic sequence stratigraphy Yingcheng Formation cooling unit structural subsidence

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NUMERICAL COMPUTATION OF PRESSURE GRADIENT FOR THE FLOW OF POWER-LAW FLUID IN ANNULUS WITH INNER CYLINDER EXECUTING A PLANETARY MOTION

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Journal of Hydrodynamics 2009年第5期21卷 699-704页

作者： CUI Hai-qing CAI Meng ZHANG Shu-yun XIU De-yan Key Laboratory for Enhanced Oil and Gas Recovery of Ministry of Education Daqing Petroleum Institute Daqing 163318 China exploration and development Research institute of Jidong Oilfield PetroChina Tangshan 063000 China

With the governing equations for the flow of the power-law fluid in annulus with the inner cylinder executing a planetary motion being transformed by using the undetermined coefficient method, the formula of pressure gradient for this flow under the given flow rate and the relevant numerical calculation method are given in this article. Through the experiments on the flow of Hydrolyzed Polyacrylamide （HPAM） aqueous solution which can be regarded as a power-law fluid, the calculated results of the pressure gradient values are compared with measured data, the mean relative error between them is smaller than 5%, which verifies the results presented in this article.

关键词： power-law fluid planetary motion annulus pressure gradient numerical calculation

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Characteristics and impacts on favorable reservoirs of carbonate ramp microfacies: A case study of the Middle-Lower Ordovician in Gucheng area,Tarim Basin,NW China

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Petroleum exploration and development 2022年第1期49卷 107-120页

作者： LIU Yini HU Mingyi ZHANG San ZHANG Junlong GAO Da XIAO Chuantao School of Geosciences Yangtze UniversityWuhan 430100China exploration and development Research institute PetroChina Daqing Oilfield CompanyDaqing 163712China

Based on the latest drilling core, thin section, 3D seismic, well logging data as well as exploration results, the sequence stratigraphy and sedimentary microfacies of the Middle-Lower Ordovician carbonates in Gucheng area, and their controlling effects on the development of reservoir were examined by the theories and methods of fine carbonate *** results show that the Middle-Lower Ordovician in Gucheng area is a set of typical carbonate ramp deposits, which can be divided into 10 microfacies in 4 subfacies as follows: back ramp, inner shallow ramp, outer shallow ramp, and deep ramp. The back ramp subfacies consists of muddy-dolomitic flat and dolomitic lagoon microfacies;it is dominated by lamellar micrite dolomite tight in lithology. The inner shallow ramp subfacies includes dolomitic shoal and dolomitic flat in shoal top and dolomitic flat between shoals microfacies;it is mainly composed of crystal dolomite with metasomatic residual structure, as well as abundant karst vugs and intercrystalline pores. The crystal dolomite has an average porosity of 4.36%. The outer ramp subfacies includes medium-high and low energy grain shoal and inter-shoal microfacies;it is dominated by sandy limestone,oolitic limestone, and micrite limestone with few pores. The deep ramp subfacies is dominated by low-energy argillaceous deposits, with local presences of storm shoal microfacies. The Lower-Middle Ordovician has six third-order sequences from bottom to top, among which sequence(SQ3) represents the third member of Yingying Formation. The main reservoir has three fourth-order high-frequency sequences. Apparently, the favorable reservoir in the study area is jointly controlled by sedimentary microfacies and high frequency sequence in the carbonate ramp. The former controls the primary pore structure, and the latter controls the intensities of karstification exposure and dolomitization in the penecontemporaneous period. The dolomitic shoals and top dolomitic flats of d

关键词： carbonate ramp microfacies type high frequency sequence Ordovician dolomite reservoir Tarim Basin Gucheng area

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Seismic wave propagating in Kelvin-Voigt homogeneous visco-elastic media

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Science China Earth Sciences 2006年第2期49卷 147-153页

作者： YUAN Chunfang1, PENG Suping1, ZHANG Zhongjie2 & LIU Zhenkuan3 1. China University of Mining & Technology, Beijing 100083, China 2. institute of Geophysics, Chinese Academy of Sciences, Beijing 100101, China 3. exploration and development Research institute of daqing Oilfield, daqing 163712, China China University of Mining & Technology Beijing China institute of Geophysics Chinese Academy of Sciences Beijing China exploration and development Research institute of daqing Oilfield Daqing China

This paper studies, under a small disturbance, the responses of seismic transient wave in the visco-elastic media and the analytic solution of the corresponding third-order partial differential equation. A plane wave solution of Kelvin-Voigt homogeneous visco-elastic third-order partial differ-ential equation with a pulse source is obtained. By the principle of pulse stacking of particle vibration, the result is extended to the solution of Kelvin-Voigt homogeneous visco-elastic third-order partial differential equation with any source. The velocities of seismic wave propagating and the attenuation of seismic wave in Kelvin-Voigt homogeneous visco-elastic media are discussed. The velocities of seismic wave propagating and the coefficient of attenuation of seismic wave in Kelvin-Voigt homogeneous visco-elastic media are derived, expressed as functions of density of the media, elastic modulus and visco-elastic coefficient. These results can be applied in inversing lithology parameters in geophysical prospecting.

关键词： Kelvin-Voigt visco-elastic velocity attenuation seismic wave.

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