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Impact of volcanism on the formation and hydrocarbon generation of organic-rich shale in the Jiyang Depression, Bohai Bay Basin, China

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Petroleum Science 2024年第3期21卷 1539-1551页

作者： Jia-Hong Gao Xin-Ping Liang zhi-jun jin Quan-You Liu Chang-Rong Li Xiao-Wei Huang Ju-Ye Shi Peng Li State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Efficient Development Institute of EnergyPeking University Petroleum Exploration and Production Research Institute SINOPECBeijing100871 China School of Energy Resources China University of Geosciences Beijing100083 China

Globally,most organic-rich shales are deposited with volcanic ash *** ash,a source for many sedimentary basins,can affect the sedimentary water environment,alter the primary productivity,and preserve the organic matter(OM)through physical,chemical,and biological *** an increasing number of breakthroughs in shale oil exploration in the Bohai Bay Basin in recent years,less attention has been paid to the crucial role of volcanic impact especially its influence on the OM enrichment and hydrocarbon ***,we studied the petrology,mineralogy,and geochemical characteristics of the organic-rich shale in the upper submember of the fourth member(Es_(4)^(1))and the lower submember of the third member(Es_(3)^(3))of the Shahejie Formation,aiming to better understand the volcanic impact on organic-rich shale *** results show that total organic carbon is higher in the upper shale intervals rich in volcanic ash with enriched light rare earth elements and moderate Eu *** indicates that volcanism promoted OM formation before or after the *** positive correlation between Eu/Eu*and Post-Archean Australian Shale indicates hydrothermal activity before the volcanic *** plane graph of the hydrocarbon-generating intensity(S1+S2)suggests that the heat released by volcanism promoted hydrocarbon ***,the nutrients carried by volcanic ash promoted biological blooms during Es_(4)^(1 )and Es_(3)^(3) deposition,yielding a high primary *** blooms consume large amounts of oxygen and form anoxic environments conducive to the burial and preservation of ***,this study helps to further understand the organic-inorganic interactions caused by typical geological events and provides a guide for the next step of shale oil exploration and development in other lacustrine basins in China.

关键词： Volcanic ash Hydrocarbon generation Organic-rich shale Shahejie Formation Jiyang Depression

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Pre-stack seismic density inversion in marine shale reservoirs in the southern Jiaoshiba area, Sichuan Basin, China

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Petroleum Science 2018年第3期15卷 484-497页

作者： Yuan-Yin Zhang zhi-jun jin Ye-Quan Chen Xi-Wu Liu Lei Han Wu-jun jin Oil and Gas Survey China Geological Survey Beijing 100083 China State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 100083 China State Energy Center for Shale Oil Research and Development Beijing 100083 China Sinopec Key Laboratory of Shale Oil/Gas Exploration and Production Technology Beijing 100083 China Petroleum Exploration and Production Research Institute Sinopec Beijing 100083 China

For a typical marine shale reservoir in the Jiaoshiba area, Sichuan Basin of China, P-impedance is sensitive for identifying lithology but not suitable for indicating good shale reservoirs. In comparison, density is an important quantity, which is sensitive for identifying the organic-rich mud shale from non-organic-rich mud shale. Due to the poor data quality and incidence angle range, density cannot be easily inverted by directly solving the ill-posed pre-stack seismic inversion in this area. Meanwhile, the traditional density regularizations implemented by directly using the more robust P-impedance inversion tend to be inaccurate for recovering density for this shale reservoir. In this paper, we combine the P-impedance and the minus uranium to construct the pseudo-P-impedance（PIp） at well locations. The PIp is observed to be sensitive for identifying organic-rich mud shale and has a good correlation with density in this area. We employ the PIp–density relation into the pre-stack inversion framework to estimate density. Three types of regularization are tested on both numerical and field data： These are no regularization, traditional regularization and the proposed approach. It is observed that the proposed method is better for recovering the density of organic-rich mud shale in the Jiaoshiba area.

关键词： Density inversion Pseudo-P-impedance Pure P-wave data Regularization

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Burial depth interval of the shale brittle–ductile transition zone and its implications in shale gas exploration and production

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Petroleum Science 2017年第4期14卷 637-647页

作者： Yu-Song Yuan zhi-jun jin Yan Zhou jun-Xin Liu Shuang-Jian Li Quan-You Liu Sinopec Petroleum Exploration and Production Research Institute 31 Xueyuan RoadBeijing 100083China Institute of Civil Engineering and Architecture Southwest University of Science and TechnologyMianyang 621002SichuanChina

Brittleness and ductility of shale are closely related to shale gas exploration and production. How to predict brittleness and ductility of shale is one of the key issues in the study of shale gas preservation and hydraulic fracturing treatments. The magnitude of shale brittleness was often determined by brittle mineral content(for example, quartz and feldspars) in shale gas ***, the shale brittleness is also controlled by burial depth. Shale brittle/ductile properties such as brittle, semibrittle and ductile can mutually transform with burial depth variation. We established a work flow of determining the burial depth interval of brittle–ductile transition zone for a given shale. Two boundaries were employed to divide the burial depth interval of shale brittle/ductile properties. One is the bottom boundary of the brittle zone(BZ), and the other is the top boundary of the ductile zone(DZ). The brittle–ductile transition zone(BDTZ) is between *** bottom boundary of BZ was determined by the overconsolidation ratio(OCR) threshold value combined with pre-consolidation stress which the shale experienced over geological time. The top boundary of DZ was determined based on the critical confining pressure of brittle–ductile transition. The OCR threshold value and the critical confining pressure were obtained from uniaxial strain andtriaxial compression tests. The BZ, DZ and BDTZ of the Lower Silurian Longmaxi shale in some representative shale gas exploration wells in eastern Sichuan and western Hubei areas were determined according to the above work flow. The results show that the BZ varies with the maximum burial depth and the DZ varies with the density of the overlying rocks except for the critical confining ***, the BDTZ determined by the above work flow is probably the best burial depth interval for marine shale gas exploration and production in Southern China. Shale located in the BDTZ is semi-brittle and is not prone to be severely n

关键词： Shale Brittleness Fracture Over-consolidation ratio(OCR) Confining pressure

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Pore structure evolution of lacustrine organic-rich shale from the second member of the Kongdian formation in the Cangdong Sag,Bohai Bay Basin,China

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Petroleum Science 2022年第2期19卷 459-471页

作者： Xiao-Ping Liu Ming Guan zhi-jun jin Zhe Cao jin Lai Lun-Ju Zheng Wen-Qi Li Biao Sun Shan-Yong Chen State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China Research Institute of Petroleum Exploration and Development China National Petroleum CorporationBeijing100083China Institute of Energy Peking UniversityBeijing100871China State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing100083China Sinopec Petroleum Exploration and Production Research Institute Beijing102206China Wuxi Petroleum Geology Institute Research Institute of Petroleum Exploration and DevelopmentSinopecWuxiJiangsu 214126China Petro China Dagang Oil Field Company Tianjin300280China

Pyrolysis experiments were conducted on lacustrine organic-rich shale from Cangdong Sag in Bohai Bay Basin,China,to investigate the impact of hydrocarbon generation on shale pore structure *** evolution is found to control the transformation of organic matter,hydrocarbon products characteristics,and pore structure ***,pore volume and specific surface area increase with increasing *** low-mature stage,the retained oil content begins to increase,pore volumes show slight changes,and primary pores are occluded by the generated crude oil of high molecular weight and *** the oil-window stage,the retained oil content rapidly increases and reaches maximum,and pore volumes gradually increase with increasing thermal *** high mature stage,the retained oil content begins to decrease,and the pore volume increases considerably owing to the expulsion of liquid *** over mature stage,natural gas content significantly increases and kerogen transforms to *** organic pores are formed and the pore size gradually increases,resulting from the connection of organic pores caused the increasing thermal *** study lays a foundation for understanding variation of hydrocarbon products during the thermal evolution of lacustrine shales and its relationship with the evolution of shale reservoirs.

关键词： Lacustrine shale Pyrolysis Thermal maturity Pore structure evolution Hydrocarbon generation evolution

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Microstructural analysis of organic matter in shale by SAXS and WAXS methods

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Petroleum Science 2022年第3期19卷 979-989页

作者： Kou-Qi Liu zhi-jun jin Lian-Bo Zeng Meng-Di Sun Bo Liu Ho Won Jang Majid Safaei-Farouji Mohammadreza Shokouhimer Mehdi Ostadhassan Institute of Energy Peking UniversityBeijing100871China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China State Key Laboratory of Continental Shale Accumulation and Efficient Development Ministry of EducationNortheast Petroleum UniversityDaqingHeilongjiang 163318China Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoul08826Republic of Korea School of Geology College of ScienceUniversity of TehranTehranIran Department of Materials Science and Engineering Seoul National UniversitySeoul08826Republic of Korea Department of Geology Ferdowsi University of MashhadMashhadIran

Characterizing the kerogen-hosted pore structures is essential to understand the adsorption,transport and storage potential in organic-rich shale *** this paper,we first separated the organic matter(kerogen)from the mineral matrix in four different shale samples of the Bakken Formation with different thermal maturities and then analyzed their chemical compositions using the wide-angle X-ray scattering(WAXS)***,we acquired small-angle X-ray scattering(SAXS)to characterize the structure of the organic matter and see how these two will *** WAXS results showed that the isolated kerogens have high purity(free of inorganic minerals)and retain different chemical ***,SAXS analysis revealed that the isolated kerogens have similar radius of gyration(R_(g))which is around 90Åand the molecules are in the compact *** on the pore size distribution analysis from the SAXS data,two main peaks were found in all of these four samples with one peak less than 40Åand the other one larger than 1000Å.Also,the TEM images revealed that Sample 1 is abundant in pores with sizes around 20 nm while Sample 2 does not have pores of that size,which agrees with the results from the pore size distribution that was obtained from the SAXS ***,this study exhibits how different analytical instruments can provide us with useful information from complex structures of geomaterials.

关键词： Isolated kerogen Bakken shale SAXS WAXS Pore structures

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Formation and distribution characteristics of Proterozoic–Lower Paleozoic marine giant oil and gas fields worldwide

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Petroleum Science 2017年第2期14卷 237-260页

作者： Xiao-Ping Liu zhi-jun jin Guo-Ping Bai Ming Guan Jie Liu Qing-Hua Pan Ting Li Yu-Jie Xing State Key Laboratory of Petroleum Resources and Prospecting Beijing 102249 China College of Geosciences China University of Petroleum Beijing 102249 China Petroleum Exploration and Production Research Institute SINOPEC Beijing 100083 China Exploration and Development Research Institute Petro China Huabei Oilfield Company Renqiu 062552 Hebei China Exploration and Development Research Institute PetroChina Tarim Oilfield Company Korla 841000 Xinjiang China

There are rich oil and gas resources in marine carbonate strata *** most of the oil and gas reserves discovered so far are mainly distributed in Mesozoic,Cenozoic,and upper Paleozoic strata,oil and gas exploration in the Proterozoic–Lower Paleozoic（PLP）strata—the oldest marine strata—has been very *** more clearly understand the oil and gas formation conditions and distributions in the PLP marine carbonate strata,we analyzed and characterized the petroleum geological conditions,oil and gas reservoir types,and their distributions in thirteen giant oil and gas fields *** study reveals the main factors controlling their formation and *** analyses show that the source rocks for these giant oil and gas fields are mainly shale with a great abundance of type I–II organic matter and a high thermal evolution *** reservoirs are mainly gas reservoirs,and the reservoir rocks are dominated by *** reservoir types are mainly karst and reef–shoal bodies with well-developed dissolved pores and cavities,intercrystalline pores,and *** reservoirs arehighly *** burial depth of the reservoirs is highly variable and somewhat negatively correlated to the *** cap rocks are mainly thick evaporites and shales,with the thickness of the cap rocks positively correlated to the oil and gas *** development of high-quality evaporite cap rock is highly favorable for oil and gas *** identified four hydrocarbon generation models,and that the major source rocks have undergone a long period of burial and thermal evolution and are characterized by early and long periods of hydrocarbon *** giant oil and gas fields have diverse types of reservoirs and are mainly distributed in paleo-uplifts,slope zones,and platform margin reef-shoal *** main factors that control their formation and distribution were identified,enabling the prediction of new favorable areas for oil and gas

关键词： Giant oil and gas field Proterozoic and LowerPaleozoic Marine carbonate rocks Petroleum geologicalconditions Oil and gas distribution

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Graphdiyne(C_(n)H_(2n-2))as an"electron transfer bridge"boosting photocatalytic hydrogen evolution over Zn_(0.5)Co_(0.5)S/MoS_(2)S-scheme heterojunction

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Rare Metals 2024年第5期43卷 1999-2014页

作者： Mei Li jing-zhi Wang zhi-Liang jin School of Chemistry and Chemical Engineering North Minzu UniversityYinchuan 750021China School of Chemistry and Chemical Engineering Ningxia Key Laboratory of Solar Chemical Conversion TechnologyKey Laboratory for Chemical Engineering and TechnologyState Ethnic Affairs CommissionNorth Minzu UniversityYinchuan 750021China

In the process of photocatalytic water cracking,the migration rate and utilization rate of photogenerated charges determine the hydrogen evolution performance of the *** this paper,a carbon isotope superconducting material graphdiyne(GDY)is prepared by mechanical ball milling and introduced into the S-scheme heterojunction Zn_(0.5)Co_(0.5)S/MoS_(2)inorganic *** terms of hydrogen evolution kinetics,GDY acts as an electron bridge,not only accelerating the migration of photogenerated carriers but also improving the utilization of photogenerated ***,the large twodimensional layer provides more loading and anchoring points for Zn_(0.5)Co_(0.5)S/MoS_(2),which increases the number of active *** ternary composite catalyst 20%GDY/Zn_(0.5)Co_(0.5)S/MoS_(2)(20-GCSM)generates 69.94μmol of hydrogen(5 h)in triethanolamine *** is 2.97 and1.80 times higher than Zn_(0.5)Co_(0.5)S and Zn_(0.5)Co_(0.5)S/MoS_(2),*** the cyclic experiment,it still has stable hydrogen evolution performance after standing for24 h(under dark conditions).In addition,the potential mechanism of photocatalytic hydrogen evolution is demonstrated through in-situ X-ray photoelectron *** work provides a reference for further research in the field of introducing carbon materials into photocatalytic systems and improving the utilization of photogenerated charges.

关键词： Graphdiyne S-scheme heterojunction Electron transfer bridge Hydrogen production

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Analyzing and engineering of the biosynthetic pathway of mollemycin A for enhancing its production

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Synthetic and Systems Biotechnology 2024年第3期9卷 445-452页

作者： Shixue jin Huixue Chen jun Zhang zhi Lin Xudong Qu Xinying Jia Chun Lei School of Pharmacy Fudan UniversityShanghai201203China State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology Shanghai Jiao Tong UniversityShanghai200240China Australian Institute for Bioengineering and Nanotechnology The University of QueenslandSt LuciaQLD4072Australia Department of Biochemistry National University of Singapore14 Medical DrSingapore117599

Mollemycin A(MOMA)is a unique glyco-hexadepsipeptide-polyketide that was isolated from a Streptomyces *** from the Australian marine *** exhibits remarkable inhibitory activity against both drug-sensitive and multidrug-resistant malaria *** MOMA through structural modifications or product enhancements is necessary for the development of effective ***,modifying MOMA using chemical approaches is challenging,and the production titer of MOMA in the wild-type strain is *** study identified and characterized the biosynthetic gene cluster of MOMA for the first time,proposed its complex biosynthetic pathway,and achieved an effective two-pronged enhancement of MOMA *** fermentation medium was optimized to increase the yield of MOMA from 0.9 mg L^(-1)to 1.3 mg L^(-1),a 44%***,a synergistic mutant strain was developed by deleting the momB3 gene and overexpressing momB2,resulting in a 2.6-fold increase from 1.3 mg L^(-1)to 3.4 mg L^(-1).These findings pave the way for investigating the biosynthetic mechanism of MOMA,creating opportunities to produce a wide range of MOMA analogues,and developing an efficient strain for the sustainable and economical production of MOMA and its analogues.

关键词： Mollemycin A Gene cluster Biosynthetic pathway Biosynthetic engineering Production enhancement Azinothricin

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Hierarchical V_(3)S_(4)/C nanofibers with fast kinetics for superior alkali metal batteries

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Rare Metals 2024年第4期43卷 1836-1844页

作者： Li Chen zhi-Xin Rao zhi Chen Zhao-Hui Wu Shuai Yang zhi-jun Feng Hui-Yong Yang Fan-Yan Zeng Xi-Bao Li jin-Yang Hu jun-Tong Huang School of Materials Science and Engineering Nanchang Hangkong UniversityNanchang330063China School of Aeronautical Manufacturing Engineering Nanchang Hangkong UniversityNanchang330063China

Owing to the numerous benefits,including low cost and great theoretical capacity,V3S4 has been a research hotspot for Li^(+)/Na^(+)/K^(+) ***,the V_(3)S_(4) electrode with long cycling stability and high specific capacities continues to pose significant *** this work,vacuum vulcanization is combined with electrospinning to synthesize V_(3)S_(4)/C composite nanofibers(V_(3)S_(4)@CNF).

关键词： composite fibers kinetics

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Design study of charge-stripping scheme of heavy ion beams for HIAF-BRing

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Nuclear Science and Techniques 2024年第5期35卷 30-41页

作者： jun-Jie Zhang zhi-You Xu jin-Quan Zhang Wen-Wen Ge Liang-Ting Sun Huan-Yu Zhao Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Charge strippers play an essential role in heavy-ion accelerators by stripping the projectile ions to higher charge states to enhance the acceleration efficiency downstream of the *** the high-energy mode of the booster ring(BRing)of the high-intensity heavy-ion accelerator facility,the pre-accelerated ions from the iLinac will be stripped by a carbon foil to higher charge states and then injected into the *** key parameters of the stripper and stripped ions were calculated,and the influence of stripping on the beam quality was *** get high stripping efficiencies,the foil thicknesses and resultant charge state distributions for the typical ions were determined by the code *** equilibrium thickness was obtained for the U beam,while the stripper thicknesses for the Xe and Kr beams were determined based on a compromise between the stripped charge states and the stripping *** energy loss,energy straggling,and emittance growth due to stripping have a non-negligible impact on the transport of the stripped beams and the injection of the ***,these parameters were simulated by *** addition,the foil’s temperature evolution,which greatly affects the foil lifetime,was simulated by *** maximum temperature of the foil bombarded by the U and Xe beams with the nominal parameters will exceed the safe value in terms of the impact of evaporation on the foil’s *** the foil temperature constraint,the highest tolerable beam intensity and the injected ion number into the ring were derived for different beam *** results of this paper will present important reference data for the optimization design and commissioning of the beamline and injection to the BRing for the stripped ions.

关键词： High-intensity heavy-ion accelerator facility Charge stripper Energy spread Thermal analysis Emittance growth Injection turns

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