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energy Geoscience 2024年第1期5卷 162-171页

作者： Yongtao Liu Shuanghe dai Yijun Zhou Fufeng ding Mingjie Li Xingyun Li Yu Zhao Binhua Guo Tong Li Junan Han research institute of Oriental Geophysical company CNPCXi'an710021China State Key Laboratory of Continental dynamics Northwest UniversityXi'an710069China exploration department of PetroChina Changqing oilfield company Xi'an710018China

3d seismic data recently acquired from the Ordos Basin shows three sets of regularly distributed fault systems,which overrides previous understanding that no faults were developed in this *** interpretation suggests that the faults in the southwestern Ordos Basin have three basic characteristics,namely extreme micro-scale,distinct vertical stratification,and regularity of planar *** NS-,NW-,and Ne-trending fault systems developed in the Meso-Neoproterozoic e Lower Ordovician *** these,the NS-trending fault system mainly consists of consequent and antithetic faults which show clear syndepositional *** fault systems in the Carboniferous e Middle-Lower Triassic strata are not clear on seismic reflection *** NW-and Ne-trending fault systems are developed in the Upper Triassic e Middle Jurassic *** these,the NW-trending fault system appears as a negative flower structure in sectional view and in an en echelon pattern in plan-view;they show transtensional deformation.A Ne-trending fault system that developed in the Lower Cretaceous e Cenozoic strata shows a Y-shaped structural style and tension-shear properties.A comprehensive analysis of the regional stress fields at different geologic times is essential to determine the development,distribution direction,and intensity of the activity of fault systems in the Ordos *** exploration suggests three aspects in which the faults within the Ordos Basin are crucial to oil and gas ***,these faults serve as vertical barriers that cause the formation of two sets of relatively independent petroleum systems in the Paleozoic and Mesozoic strata respectively;this is the basis for the‘upper oil and lower gas’distribution ***,the vertical communication of these faults is favorable for oil and gas migration,thus contributing to the typical characteristics of multiple oil and gas fields within the basin,*** and gas reservoirs with multiple

关键词： Coherent attribute Strike-slip fault Flower structure Shale oil Ordos basin

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research on a TOPSIS energy efficiency evaluation system for crude oil gathering and transportation systems based on a GA-BP neural network

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Petroleum Science 2024年第1期21卷 621-640页

作者： Xue-Qiang Zhang Qing-Lin Cheng Wei Sun Yi Zhao Zhi-Min Li Key Lab of Ministry of education for enhancing the Oil and Gas Recovery Ratio Northeast Petroleum UniversityDaqing163318HeilongjiangChina China Petroleum Pipeline Material and equipment Co. LtdLangfang065000HebeiChina research institute of Petroleum engineering and Technology Sinopec Northwest Oilfield CompanyUrumqi830011XinjiangChina

As the main link of ground engineering,crude oil gathering and transportation systems require huge energy consumption and complex *** is necessary to establish an energy efficiency evaluation system for crude oil gathering and transportation systems and identify the energy efficiency *** this paper,the energy efficiency evaluation system of the crude oil gathering and transportation system in an oilfield in western China is *** with the big data analysis method,the GA-BP neural network is used to establish the energy efficiency index prediction model for crude oil gathering and transportation *** comprehensive energy consumption,gas consumption,power consumption,energy utilization rate,heat utilization rate,and power utilization rate of crude oil gathering and transportation systems are *** the efficiency and unit consumption index of the crude oil gathering and transportation system,the energy efficiency evaluation system of the crude oil gathering and transportation system is established based on a game theory combined weighting method and TOPSIS evaluation method,and the subjective weight is determined by the triangular fuzzy analytic hierarchy *** entropy weight method determines the objective weight,and the combined weight of game theory combines subjectivity with objectivity to comprehensively evaluate the comprehensive energy efficiency of crude oil gathering and transportation systems and their ***,the weak links in energy utilization are identified,and energy conservation and consumption reduction are *** above research provides technical support for the green,efficient and intelligent development of crude oil gathering and transportation systems.

关键词： Crude oil gathering and transportation system GA-BP neural network energy efficiency evaluation TOPSIS evaluation method energy saving and consumption reduction

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Formation mechanism of fault accommodation zones under combined stress in graben basin:Implications from geomechanical modeling

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Petroleum Science 2024年第1期21卷 54-76页

作者： Qi-Qiang Ren Jin-Liang Gao Rong-Tao Jiang Jin Wang Meng-Ping Li Jian-Wei Feng institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059SichuanChina PetroChina research institute of Petroleum exploration and development Beijing100083China Jianghan oilfield Oil and Gas Production Capacity Construction Management Center Chongqing408000China Sinopec Chongqing Fuling Shale Gas exploration and development company Chongqing408000China College of energy Chengdu University of TechnologyChengdu 610059SichuanChina School of Geoscience China University of Petroleum(East China)Qingdao 266580ShandongChina

A fault accommodation zone is a type of structure that is defined as regulating displacement and strain between faults *** numbers of fault accommodation zones are being identified in graben basins,indicating the potential exploration target and petroleum accumulation *** study aims to analyze the formation mechanism and development of fault accommodation zones under combined stress by a numerical simulation method considering geomechanical *** three-dimensional(3-d)seismic interpretation and fractal dimension method,exampled with the dongxin fault zone,the fault activity and fault combination pattern were conducted to quantitatively characterize the activity difference in fault accommodation *** with mechanical experiment test,a geomehcanical model was established for fault accommodation zones in a graben *** the paleostress numerical simulations and structural physical simulation experiment,the developmental characteristics and genetic mechanism of fault accommodation zones were *** by multi movements and combined stresses,three significant tectonic evolution stages of the dongxing Fault Zone(dXFZ)were distinguished:during the e_(s)^(3)sedimentary period,the large difference in the stress,strain,and rupture distribution in various faults were significant,and this stage was the key generation period for the prototype of the dXFZ,including the FAZ between large-scale *** the e_(s)^(2)sedimentary period,the eW-trending symmetric with opposite dipping normal faults and the Ne-SW trending faults with large scale were furtherly *** junction area of two secondary normal faults were prone to be ruptured,performing significant period for inheriting and developing characteristics of fault accommodation *** the es1 sedimentary period,the high-order faults in the dXFZ exhibited the obvious fault depressions and strike-slip activity,and the fault accommodation zones were

关键词： Fault accommodation zone Graben basin Fault activity Tectonic physical simulation experiment Finite element numerical simulation dongxin fault zone

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Shale Oil Occurrence and Reservoir Characteristics of the Qijia-Gulong depression in Songliao Basin

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Acta Geologica Sinica(english edition) 2015年第A1期89卷 151-153页

作者： HUO Qiuli ZeNG Huasen ZHANG Xiaochang FANG Qinghua WANG Zhenying FU Li e&d research institute Daqing Oilfield Company Ltd.Co.

1 Introduction The technology breakthrough in the exploration of shale gas and tight oil has greatly extended the global fossil fuel resources （Jia et al., 2012; Zou et al., 2012; Qiu et al., 2013）. Although shale oil has been the global hot topic in the study of unconventional resources, there are varied definitions with respect to shale oil by different researchers.

关键词： SHALe gas reservoirs SHALe oils BASINS (Geology) PYROLYSIS OIL fields CHINA

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Paleoenvironmental Characteristics of Paleogene Lacustrine Source Rocks in the Western Bozhong Sag,Bohai Bay Basin,China:evidence from Biomarkers,Major and Trace elements

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Acta Geologica Sinica(english edition) 2024年第1期98卷 220-240页

作者： WANG Xiang LIU Guangdi SONG Zezhang SUN Mingliang WANG Xiaolin WANG Feilong CHeN Rongtao GeNG Mingyang LI Yishu State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China College of Geosciences China University of PetroleumBeijing 102249China China National Offshore Oil Co. Ltd.(CNOOC)Tianjin Branch CompanyTianjin 300459China CNOOC research institute Beijing 100028China

The organic matter(OM)enrichment mechanisms and depositional environment characteristics of lacustrine source rocks in the western Bozhong Sag,Bohai Bay Basin in Northeast China remain *** address these issues,based on Rock-eval pyrolysis,kerogen macerals,H/C and O/C ratios,GC-MS,major and trace elements,the dongying Formation Member(Mbr)3(e_(3)d_(3)),the Shahejie Formation mbrs 1 and 2(e_(2)s_(1+2)),and the Shahejie Mbr 3(e_(2)s_(3))source rocks in the western Bozhong Sag were *** above methods were used to reveal their geochemical properties,OM origins and depositional environments,all of which indicate that e_(2)s_(1+2)and e_(2)s_(3)are excellent source rocks,and that e_(3)d_(3)is of the second good quality.e_(3)d_(3)source rocks were formed under a warm and humid climate,mainly belong to fluvial/delta facies,the e_(3)d_(3)sediments formed under weakly oxidizing and freshwater ***,the depositional environments of e_(2)s_(1+2)source rocks were arid and cold climate,representing saline or freshwater lacustrine facies,and the sediments of e_(2)s_(1+2)belong to anoxic or suboxic settings with large evaporation and *** the period of e_(2)s_(3),the climate became warm and humid,indicating the freshwater lacustrine facies,and e_(2)s_(3)was characterized by freshwater and abundant ***,compared with other intervals,the OM origin of e_(3)d_(3)source rocks has noticeable terrestrial *** OM origin of the e_(2)s_(1+2)and e_(2)s_(3)are mainly plankton and *** subsidence and climate change have affected the changes of the depositional environment in the western Bozhong Sag,thus controlling the distribution of the source rocks,the geochemical characteristics in the three intervals of lacustrine source rocks have distinct ***,these factors are effective to evaluate the paleoenvironmental characteristics of source rocks by biomarkers,major and trace *** established models

关键词： petroleum geology source rocks depositional environments biomarkers major elements trace elements Bozhong Sag

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Origin of the dashuigou independent tellurium deposit at Qinghai–Xizang Plateau: constraints from the light stable isotopes C, O, and H

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Acta Geochimica 2024年第2期43卷 385-398页

作者： Jianzhao Yin Yuhong Chao Haoyu Yin Hongyun Shi Shoupu Xiang Wuhan institute of Technology Wuhan 430074China College of earth Sciences Jilin UniversityChangchun 130061China Ganzhongnan institute of Geology and Mineral exploration Nanchang 330002China Guinea Westfi eld Mining company-Sarlu Jinzhong 031300China Orient Resources ltd. RichmondB.C.V7E 1M8Canada Silvercorp Metals Inc. Beijing 100027China

By studying the light isotopic compositions of carbon,oxygen,and hydrogen,combined with previous research results on the ore-forming source of the deposit,the authors try to uncover its metallogenic *** δ^(18)O and δ^(13)C isotope signatures of dolomite samples vary between 10.2 and 13.0‰,and between−7.2 and−5.2‰,respectively,implying that the carbon derives from the upper mantle.δd and δ^(18) O of quartz,biotite,and muscovite from diff erent ore veins of the deposit vary between−82 and−59‰,and between 11.6 and 12.4‰,respectively,implying that the metallogenic solutions are mainly *** to the relevant research results of many isotope geologists,the fractionation degree of hydrogen isotopes increases as the depth to the earth’s core increases,and the more diff erentiated the hydrogen isotopes are,the lower their values will *** other words,mantle-derived solutions can have extremely low hydrogen isotope *** means that the δd‰ value−134 of the pyrrhotite sample numbered Sd-34 in this article may indicate mantle-derived oreforming fl uid of the *** formation of the dashuigou tellurium deposit occurred between 91.71 and 80.19 Ma.

关键词： Carbon oxygen and hydrogen isotopes Origin Independent tellurium deposit The Qinghai–Xizang Plateau

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A New Method for Converting T_(2) Spectrum into Pore Radius

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Journal of earth Science 2023年第4期34卷 966-974页

作者： Fan Zhang Zhenxue Jiang Yuanhao Zhang Bin Hu Zaiquan Yang Yuhua Yang Xianglu Tang Hanmin Xiao Lin Zhu Yunhao Han CNOOC energy economics institute Beijing 100013China State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China Unconventional Oil and Gas Science and Technology institute Beijing 102249China PetroChina Changqing oilfield company Xi􀆳an 710018China e&d research institute of oilfield company ltd. Daqing 163412China research institute of Petroleum exploration and development Beijing 100083China

In this paper,a new method for converting the T_(2)(relaxation time) of NMR(nuclear magnetic resonance) into the pore radius is *** with NMR and centrifugation experiments,the relationship between pore radius and T_(2) of the sample was *** results show that the new method is more reasonable than the traditional *** the sample was denser and the mercury saturation was lower,the pore distribution curve was obtained by traditional method had a worse agreement with mercury injection experiment,while pore distribution curve of the new method had a better agreement with the mercury injection curve,which reflected the greater advantage of the new method as the reservoir becomes *** new method can obtain all the pore information in the *** results show that the pores in tight sandstone are mainly consisted with mesopore and macropore,and the connectivity of macropore is better than that of *** new method can effectively characterize the full pore distribution and the seepage characteristics in different pores interval of tight reservoirs,which had a great significance to evaluate the recoverable resources of tight reservoir.

关键词： tight reservoir nuclear magnetic resonance(NMR) pore radius T_(2)spectrum.

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Crude-oil hydrocarbon composition characteristics and oil viscosity prediction in the northern Songliao Basin

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Science China earth Sciences 2014年第6期57卷 297-312页

作者： ZHANG JuHe FeNG ZiHui FANG Wei HUO QiuLi ZHANG Kun LI JingKun ZeNG HuaSen ZHANG BoWei exploration and development research institute Daqing Oilfield Company Ltd. School of Resources and environment Southwest Petroleum University

Crude oil hydrocarbon composition characteristics and oil viscosity prediction are important bases in petroleum exploration. A total of 54 oil/heavy-oil samples and 17 oil sands were analyzed and quantified using both comprehensive 2d gas chromatog raphy （GCxGC） and comprehensive 2d gas chromatography/time-of-flight mass spectrometry （GCxGC/TOFMS）. The results show that crude oil in the West slope is mainly heavy oil and its hydrocarbon composition is characterized overall by paraf fins 〉 mono-aromatics 〉 naphthenes 〉 non-hydrocarbons 〉 di-aromatics 〉 tri-aromatics 〉 tetra-aromatics. Aromatics are most abundant and non-hydrocarbons are least abundant, whilst content differences among paraffins, naphthenes, aromatics, and non-hydrocarbons are less than 15%. There are two types of heavy oil, secondary type and mixing type. Biodegradation is the main formation mechanism of heavy oil. Biodegradation levels cover light biodegradation, moderate biodegradation, and se- vere biodegradation. With increasing biodegradation, paraffin content decreases while contents of aromatics and non- hydrocarbons increase. In contrast, naphthene content increases first and then decreases with increasing biodegradation. In se- vere biodegradation stage, naphthenes decrease more quickly than aromatics and non-hydrocarbons. This provides a new method for studying oil/heavy-oil biodegradation mechanism and biodegradation resistance of different hydrocarbons at dif- ferent biodegradation stages. In the Longhupao-daan terrace and Qijia-Gulong depression, most crude oil is conventional oil. Its composition is dominated by paraffins with the lowest content of aromatics. In some casual oil wells from the Long- hupao-daan terrace, crude oil from Saertu oil reservoirs is moderately biodegraded whereas crude oil from Putaohua oil reser voir is lightly biodegraded. Chemical parameters using saturate hydrocarbons and aromatics are usually not suitable for deter mining organic type and thermal maturity o

关键词： Songliao Basin crude-oil and heavy oil hydrocarbon composition comprehensive two-dimensional gas chromatog-raphy

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The structural characteristics, age of origin, and tectonic attribute of the erguna Fault, Ne China

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Science China earth Sciences 2015年第8期58卷 1553-1565页

作者： ZHeNG Han SUN XiaoMeng ZHU deFeng TIAN JingXiong He Song WANG Yingde ZHANG XuQing College of earth Sciences Jilin University exploration and development research institute of daqing oilfield company ltd. Ningxia institute of Geological Survey

The erguna Fault runs along the east bank of the erguna River in Ne China and is a large-scale ductile shear zone comprising granitic mylonites. This paper reports on the geometry, kinematic indicators, and 40Ar/39 Ar biotite ages of the granitic mylonites, to constrain the structural characteristics, forming age, and tectonic attribute of the erguna ductile shear zone. The zone strikes Ne and records a top-to-the-NW sense of shear. A mylonitic foliation and stretching lineation are well developed in the mylonites, which are classified as S-L tectonites. Logarithmic flinn parameters(1.18–2.35) indicate elongate strain which approximates to plane strain. Kinematic vorticity numbers are 0.42–0.92 and 0.48–0.94, based on the polar Mohr diagram and the oblique foliation in quartz ribbons, respectively, suggesting that the ductile shear zone formed under general shear, or a combination of simple and pure shear. According to finite strain and kinematic vorticity analyses, the erguna Fault is a lengthening-thinning ductile shear zone that formed by extension. The deformation behavior of minerals in the mylonites indicates that the fault was the site of three stages of deformation: an initial stage of middle- to deep-level, high-temperature shear, a post-stress recovery phase of high-temperature static recrystallization, and a final phase of low-temperature uplift and cooling. The 40Ar/39 Ar plateau ages of biotite from the granitic mylonites are 106.16 ± 0.79 and 111.55 ± 0.67 Ma, which constrain the timing of low-temperature uplift and cooling but are younger than the ages of metamorphic core complexes(MCCs) in the Transbaikalia-northeast Mongolia region. Using measured geological sections, microtectonics, estimates of finite strain and kinematic vorticity, and regional correlations and geochronology, we conclude that the erguna Fault is an early Cretaceous, NNe-trending, large-scale, sub-horizontal, and extensional ductile shear zone. It shares a similar tectonic backgro

关键词： erguna Fault ductile shear zone mylonite 40^Ar/39^Ar plateau age tectonic attribute

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Tight oil accumulation of the redeposited carbonates in the continental rift basin:A case study from Member 3 of Shahejie Formation in Shulu sag of Jizhong depression,North China

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Petroleum research 2017年第1期2卷 77-89页

作者： Jianzhang Tian Ran Tian Kaiyan Chen Shuguang Chen Zengqiang Guo Geophysical exploration research institute PetroChina Huabei Oilfield CompanyHebei 062552China exploration and development research institute PetroChina Huabei Oilfield CompanyHebei 062552China

Tight oil in the redeposited carbonates was mainly distributed in the Lower Submember of Member 3 of Shahejie Formation in Shulu sag of Jizhong depression,North *** high-resolution 3d seismic data,well logging data and drilling data,the Lower Submember of Member 3 of Shahejie Formation was divided into 5 third-order sequences and 15 parasequence *** redeposited marl and rudstone were major reserving horizons of tight oil,and ten reserving space types were developed and could be classified into two main categories,i.e.,pores and *** types of tight oil reservoirs were established,i.e.,the marl hydrocarbon reservoir of the source-reservoir integration and the rudstone hydrocarbon reservoirs of the source-reservoir *** assemblage relationship among the high-quality source rocks,system tracts with the source-reservoir configuration was the major control factor for tight oil accumulation in the redeposited *** lacustrine transgressive system tracts and highstand systems tracts in SQ1 to SQ5 were the favorable horizons for development of the marl hydrocarbon reservoir,the lowstand system tracts in SQ1 to SQ3 were the favorable horizons for development of the rudstone hydrocarbon reservoir.

关键词： Member 3 of Shahejie Formation Tight oil Re-deposited carbonate Marl Rudstone Third-order sequence Hydrocarbon reservoir

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