检索结果-南通市图书馆

Geological characteristics and models of fault-foldfracture body in deep tight sandstone of the second member of Upper Triassic Xujiahe Formation in Xinchang structural belt of Sichuan Basin,SW China

在线全文

学校读者我要写书评

暂无评论

Petroleum exploration and Development 2023年第3期50卷 603-614页

作者： LIU Junlong LIU Zhongqun LIU Zhenfeng LIU Yali SHEN Baojian XIAO Kaihua BI Youyi WANG Xiaowen WANG Ail FAN Lingxiao LI Jitongl sinopec Petroleum exploration&Production Research Institute Beijing 100083China sinopec Southwest Oil&Gas company Chengdu 610081China

In the second member of the Upper Triassic Xujiahe Formation(T_(3)x_(2))in the Xinchang area,western Sichuan Basin,only a low percent of reserves has been recovered,and the geological model of gas reservoir sweet spot remains *** on a large number of core,field outcrop,test and logging-seismic data,the T_(3)x_(2) gas reservoir in the Xinchang area is *** concept of fault-fold-fracture body(FFFB)is proposed,and its types are *** main factors controlling fracture development are identified,and the geological models of FFFB are *** refers to faults,folds and associated fractures *** to the characteristics and genesis,FFFBs can be divided into three types:fault-fracture body,fold-fracture body,and fault-fold *** the hanging wall of the fault,the closer to the fault,the more developed the effective fractures;the greater the fold amplitude and the closer to the fold hinge plane,the more developed the effective *** types of geological models of FFFB are established:fault-fold fracture,and matrix storage and *** former can be divided into two subtypes:network fracture,and single structural fracture,and the later can be divided into three subtypes:bedding fracture,low permeability pore,and extremely low permeability *** process for evaluating favorable FFFB zones was formed to define favorable development targets and support the well deployment for purpose of high *** study results provide a reference for the exploration and development of deep tight sandstone oil and gas reservoirs in China.

关键词： fault-fold-fracture body fracture control factor genetic characteristics geological model deep layer tight sandstone Xinchang structural belt Upper Triassic Xujiahe Formation Sichuan Basin

Theory,technology and practice of shale gas three-dimensional development:A case study of Fuling shale gas field in Sichuan Basin,SW China

在线全文

学校读者我要写书评

暂无评论

Petroleum exploration and Development 2023年第3期50卷 651-664页

作者： SUN Huanquan CAI Xunyu HU Degao LU Zhiyong ZHAO Peirong ZHENG Aiwei LI Jiqing WANG Haitao China Petrochemical Corporation Beijing 100728China Department of Oilfield exploration&Development SinopecBeijing 100728China Jianghan Oilfield company SinopecQianjiang 433124China Petroleum exploration and Production Research Institute SinopecBeijing 100083China

In the Jiaoshiba block of the Fuling shale gas field,the employed reserves and recovery factor by primary well pattern are low,no obvious barrier is found in the development layer series,and layered development is *** on the understanding of the main factors controlling shale gas enrichment and high production,the theory and technology of shale gas three-dimensional development,such as fine description and modeling of shale gas reservoir,optimization of three-dimensional development strategy,highly efficient drilling with dense well pattern,precision fracturing and real-time control,are ***-dimensional development refers to the application of optimal and fast drilling and volume fracturing technologies,depending upon the sedimentary characteristics,reservoir characteristics and sweet spot distribution of shale gas,to form"artificial gas reservoir"in a multidimensional space,so as to maximize the employed reserves,recovery factor and yield rate of shale gas *** the research on shale gas three-dimensional development,the geological+engineering sweet spot description is fundamental,the collaborative optimization of natural fractures and artificial fractures is critical,and the improvement of speed and efficiency in drilling and fracturing engineering is the *** the implementation of three-dimensional development,the overall recovery factor in the Jiaoshiba block has increased from 12.6%to 23.3%,providing an important support for the continuous and stable production of the Fuling shale gas field.

关键词： shale gas three-dimensional development Fuling shale gas field Sichuan Basin fine reservoir description precision fracturing recoveryfactor

Genetic mechanisms and control on hydrocarbon accumulation in transtensional structures: A case study of Gaoqing area, northern Dongying Sag, China

在线全文

学校读者我要写书评

暂无评论

能源地球科学(英文) 2023年第3期4卷 203-209页

作者： Juan He Weizhong Zhang exploration&Production Research Institute SINOPECBeijing102206China Geophysical Research Institute of Shengli Oilfield company SINOPECDongyingShandong257022China

Broom-shaped structures are widely seen in transtensional basins, including those discovered in many sags of the Bohai Bay Basin. Broom-shaped transtensional structural zones are generally petroliferous and thus important targets for hydrocarbon exploration. This study analyzed the evolution and genetic mechanisms of the broom-shaped transtensional structures in the Gaoqing area of the Dongying Sag using the 3D seismic flattening technique and a physical simulation experiment. Furthermore, the control effects of the broom-shaped transtensional structures on hydrocarbon accumulation and distribution were discussed. The research results are as follows. The Gaoqing area is of a broom-shaped transtensional structure in planar view, composed of several arc-shaped secondary faults intersecting with high-level main fault in the same direction. On the seismic section, it appears as a typical semi-flower-like structure. In the early stage (that is, during the deposition of the Kongdian Formation to the lower submember of the 4th member of the Shahejie Formation, Es4(L)), single-fault pattern consisting of single or multiple faults in alignment was developed under extensional stress. While with the change of structural stress (that is, during the deposition of the Es4(U) to the Es2(L)), more secondary faults were formed, and came in a pattern of broom-shaped structure together with the major fault. In the late stage (that is, during the deposition of the Es1 to the Guantao Formation), the en echelon fault pattern was formed, as the major fault broke into multiple secondary faults. The divergent end of the broom-shaped transtensional structure has many secondary faults developed, the fault planes are gentle, and small-scale fan deltas are the predominant type of deposits. The hydrocarbon tends to laterally migrate far away and accumulate mianly in structural and lithologic-structural traps. On the other hand, in the convergent end, the fault planes are relatively steep, result

关键词： Broonn-shaped tanstensional stucture Physical sirulation Genetic mechanism Contol on hydrocarbon accunulation Gaoqing area Dongying sag

Origin and diagenetic evolution of dolomites in Paleogene Shahejie Formation lacustrine organic shale of Jiyang Depression,Bohai Bay Basin,East China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum exploration and Development 2022年第6期49卷 1251-1265页

作者： TENG Jianbin QIU Longwei ZHANG Shoupeng MA Cunfei School of Geosciences China University of Petroleum(East China)Qingdao 266580China exploration and Development Research Institute Shengli Oilfield CompanySinopecDongying 257015China Key Laboratory of Shale Oil/Gas exploration and Production SinopecBeijing 100083China

The origin of dolomite in Shahejie Formation shale of Jiyang Depression in eastern China were studied by means of petrologic identification, compositional analysis by X-ray diffraction, stable carbon and oxygen isotopic composition, and trace element and rare earth element analyses. The results show that the development of dolomite is limited in the lacustrine organic rich shale of Shahejie Formation in the study area. Three kinds of dolomite minerals can be identified: primary dolomite(D1), penecontemporaneous dolomite(D2), and ankerite(Ak). D1 has the structure of primary spherical dolomite, high magnesium and high calcium, with order degree of 0.3-0.5, and is characterized by the intracrystalline corrosion and coexistence of secondary enlargement along the outer edge. D2 has the characteristics of secondary enlargement, order degree of 0.5-0.7, high magnesium, high calcium and containing a little iron and manganese elements. Ak is characterized by high order degree of 0.7-0.9, rhombic crystal, high magnesium, high calcium and high iron. The micritic calcite belongs to primary origin on the basis of the carbon and oxygen isotopic compositions and the fractionation characteristics of rare earth elements. According to the oxygen isotopic fractionation equation between paragenetic dolomite and calcite, it is calculated that the formation temperature of dolomite in the shale is between 36.76-45.83 ℃, belonging to lacustrine low-temperature dolomite. Based on the maturation and growth mechanism of primary and penecontemporaneous dolomite crystals, a dolomite diagenetic sequence and the dolomitization process are proposed, which is corresponding to the diagenetic environment of Shahejie Formation shale in the study area.

关键词： Jiyang Depression lower Sha3 Member upper Sha 4 Member organic shale dolomite isotope fractionation rare earth element diagenetic evolution

The first extra-large helium-rich gas field identified in a tight sandstone of the Dongsheng Gas Field,Ordos Basin,China

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2022年第5期65卷 874-881页

作者： Weilong PENG Quanyou LIU Ying ZHANG Huichong JIA Dongya ZHU Qingqiang MENG Xiaoqi WU Shang DENG Yongsheng MA State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 100083China Petroleum exploration and Production Research Institute SINOPECBeijing 100083China exploration and Production Research Institute SINOPEC North China BranchZhengzhou 450006China Ma Yongsheng’s Laboratory Beijing 100083China sinopec company Limited Beijing 100728China

Helium gas is a scarce but important strategic resource,which is usually associated with natural ***,only one extra-large helium-rich gas field has been found in China:the Hetianhe Gas Field in the Tarim *** paper reports a new example,the Dongsheng Gas Field(DGF)in the Ordos *** this study,92 natural gas samples from the DGF were analyzed for helium content and isotope composition using isotope mass *** natural gas samples were found to have an average helium content of 0.133%,with 65(70.7%)of the samples having a helium content of 0.1%or *** on the proven natural gas reserves of the DGF,the proven geological helium reserves were calculated to be 1.96×10^(8)m^(3),suggesting that it represents the first extra-large helium-rich natural gas reservoir to be hosted in tight sandstone in *** ^(3)He/^(4)He ratios of 5 natural gas samples from the DGF are within the range of 3.03×10^(−8)–3.44×10^(−8).Therefore,the helium in the gas field is thought to be of typical crustal origin and to have formed in the granitic basement that is rich in uranium and *** accumulation of helium-rich natural gas was controlled by regional tectonic *** along the fault connecting the reservoir with the basement caused release of the helium gas,which entered the overlying strata along the fault and accumulated with conventional hydrocarbon *** on the structural background and the distribution of helium source rocks in the Ordos Basin,the main helium source rocks with high exploration potential are located in deep strata within the north and middle parts of the basin.

关键词： Helium gas Granitic basement Radiogenesis Dongsheng Gas Field Ordos Basin

Petrophysical and capillary pressure properties of the upper Triassic Xujiahe Formation tight gas sandstones in western Sichuan,China

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2011年第1期8卷 34-42页

作者： Ye Sujuan Lu Zhengxiang Li Rong exploration and Production Research Institute Sinopec Southwest CompanySichuan 610081China Chengdu Institute of Geology and Mineral Resources Sichuan 610081China

The tight sandstones of the Upper Triassic Xujiahe Formation（T_3x） constitute important gas reservoirs in western *** Xujiahe sandstones are characterized by low to very low porosity （av.5.22%and 3.62%） for the T_3x^4 and T_3x^2 sandstones,respectively）,extremely low permeability（av. 0.060 mD and 0.058 mD for the T_3x^4 and T_3x^2 sandstones,respectively）,strong heterogeneity,micronano pore throat,and poor pore throat *** a result of complex pore structure and the occurrence of fractures,weak correlations exist between petrophysical properties and pore throat size,demonstrating that porosity or pore throat size alone does not serve as a good permeability *** improved correlations can be obtained between permeability and porosity when pore throat radii are incorporated. Correlations between porosity,permeability,and pore throat radii corresponding to different saturations of mercury were established,showing that the pore throat radius at 20%mercury saturation（R_（20）） is the best permeability *** regression analysis and artificial neural network（ANN） methods were used to establish permeability prediction models and the unique characteristics of neural networks enable them to be more successful in predicting permeability than the multivariate regression *** addition, four petrophysical rock types can be identified based on the distributions of R_（20）,each exhibiting distinct petrophysical properties and corresponding to different flow units.

关键词： Western Sichuan upper Triassic Xujiahe Formation tight sandstones permeability porosity pore throat radius regression analysis artificial neural network

Application of seismic facies and attributes analysis on the identification of Permian igneous rock

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2012年第4期22卷 471-475页

作者： Xu Yongzhong Yang Haijun Liu Yongfu Wang Shuangshuangx Wang Shuangshuang Yang Peng Zhao Jixiang School of Resource and Geosciences China University of Mining&TechnologyXuzhou 221008China nstitute of China Petroleum Tarim Oilfield company Korla 841000China sinopec exploration southern company Chengdu 610041China

Seismic facies and attributes analysis techniques are *** geological characteristics of some oil fields in western China are used in conjunction with drilling results and logging data to identify the lithology,intrusion periods,and distribution range of the Permian igneous rocks in this *** lithologic classification,the vertical and horizontal distribution,and the intrusion periods of igneous rock were deduced through this *** seismic facies and attributes analysis based on optimization can describe the igneous rock in *** is an efficient way to identify lithology and intrusion *** geological data and GR-DT logging cross-plots the Permian igneous rock from TP to TT was divided into three *** lithology of the first period is tuff and clasolite with a thickness ranging from 18 to 80 *** second is basalt with a thickness ranging from 0 to 20 *** third is tuff and clasolite and dacite whose thickness ranges from 60 to 80 *** results can help understand the clasolite trap with low amplitude and the lithologic trap of the Carboniferous and *** can also guide further oil and/or gas exploration.

关键词： Seismic faciesAttributes analysisLogging cross-plot lgneous rock

Numerical simulation on proppant migration and placement within the rough and complex fractures

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum Science 2022年第5期19卷 2268-2283页

作者： Tian-Kui Guo Zhi-Lin Luo Jin Zhou Yuan-Zhi Gong Cai-Li Dai Jin Tang Yang Yu Bing Xiao Bao-Lun Niu Ji-Jiang Ge College of Petroleum Engineering China University of Petroleum(Huadong)Qingdao266580ShandongChina Southwest Oil and Gas Field company PetroChinaChengdu610051SichuanChina exploration Division Tarim Oilfield CompanyPetroChinaKorla841000XinjiangChina Dongxin Oil Production Plant Shengli Oil Field BranchSinopecDongying257100ShandongChina Research Institute of Petroleum exploration and Development PetroChinaBeijing100083China Zhongyuan Petroleum Engineering company SinopecPuyang457001HenanChina Zhongyuan Oilfield company SinopecPuyang457001HenanChina

Hydraulic fracturing is a key technology for the development of unconventional hydrocarbon *** proppant placement morphology determines the fracture conductivity,thus affecting the reservoir stimulation *** this paper,the proppant migration and placement within complex fractures was studied by considering the fracture wall roughness through computational fluid mechanics-discrete element method(CFD-DEM)in numerical simulation,which is a key approach to study the proppant migration and *** results show that the proppant placement non-uniformity,proppant migration capacity,and proppant volume filled in the far-end and the secondary branched fracture are enhanced within the rough fracture compared with those within smooth *** proppant migration capacity is increased within the fracture at low inclination angles(<60°)and low approach angles(<90°),and the proppant placement area is larger in the inclined fracture than that in the vertical *** rise of injection rate and fracturing fluid viscosity causes more proppants migrate to far-end or secondary fractures,resulting in a non-proppant area within the near-wellbore *** increase by 1.3 times in the injection rate and 3 times in the fracturing fluid viscosity leads to a decrease by 26.6%and 27%,respectively,in the proppant placement area within the near-wellbore *** staged injection with small size proppants followed by large size proppants increases the proppant placement area in the primary fracture by 13%-26%,and that with large size proppants followed by small size proppants increases the proppant placement area by 19%-25%,which is due to that the latter method facilitates filling of the secondary branched *** injection location mainly affects the proppant filling degree within the near-wellbore *** with the upper injection,the middle and lower injection is not beneficial to filling of proppants within the near-wellbore fracture.

关键词： Hydraulic fracturing Proppant migration and placement Rough fracture wall Complex fracture CFD-DEM coupling

Theoretical Progress and Key Technologies of Onshore Ultra-Deep Oil/Gas exploration

在线全文

学校读者我要写书评

暂无评论

Engineering 2019年第3期5卷 458-470页

作者： Xusheng Guo Dongfeng Hu Yuping Li Jinbao Duan Xuefeng Zhang Xiaojun Fan Hua Duan Wencheng Li sinopec exploration company Chengdu 610041 China Institute of Oil and Gas School of Earth and Space Sciences Peking University Beijing 100871 China

Oil/gas exploration around the world has extended into deep and ultra-deep strata because it is increasingly difficult to find new large-scale oil/gas reservoirs in shallow–middle buried strata. In recent years, China has made remarkable achievements in oil/gas exploration in ultra-deep areas including carbonate and clastic reservoirs. Some (ultra) large-scale oil and gas fields have been discovered. The oil/gas accumulation mechanisms and key technologies of oil/gas reservoir exploration and development are summarized in this study in order to share China’s experiences. Ultra-deep oil/gas originates from numerous sources of hydrocarbons and multiphase charging. Liquid hydrocarbons can form in ultradeep layers due to low geothermal gradients or overpressures, and the natural gas composition in ultra-deep areas is complicated by the reactions between deep hydrocarbons, water, and rock or by the addition of mantle- or crust-sourced gases. These oils/gases are mainly stored in the original highenergy reef/shoal complexes or in sand body sediments. They usually have high original porosity. Secondary pores are often developed by dissolution, dolomitization, and fracturing in the late stage. The early pores have been preserved by retentive diageneses such as the early charging of hydrocarbons. Oil/gas accumulation in ultra-deep areas generally has the characteristics of near-source accumulation and sustained preservation. The effective exploration and development of ultra-deep oil/gas reservoirs depend on the support of key technologies. Use of the latest technologies such as seismic signal acquisition and processing, low porosity and permeability zone prediction, and gas–water identification has enabled the discovery of ultra-deep oil/gas resources. In addition, advanced technologies for drilling, completion, and oil/gas testing have ensured the effective development of these fields.

关键词： Oil/gas exploration Ultra-deep sources Reservoir Petroleum accumulation exploration and exploitation technologies