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petroleum 2015年第4期1卷 307-317页

作者： Mohammad Ali Ahmadi Maysam Pournik Seyed Reza Shadizadeh Department of petroleum engineering Ahwaz Faculty of Petroleum EngineeringPetroleum University of TechnologyAhwazIran Department of petroleum engineering Mewbourne School of Petroleum&Geological EngineeringUniversity of OklahomaOKUnited States Department of petroleum engineering Abadan Faculty of Petroleum EngineeringPetroleum University of TechnologyAbadanIran

Knowledge about reservoir fluid properties such as bubble point pressure(Pb)plays a vital role in improving reliability of oil reservoir *** this work,hybrid of swarm intelligence and artificial neural network(ANN)as a robust and effective method was executed to determine the Pb of crude oil *** addition,the exactly precise Pb data samples reported in the literatures were employed to create and validate the PSO-ANN *** prove and depict the reliability of the smart model developed in this study for estimating Pb of crude oils,the conventional approaches were applied on the same data *** on the results generated by PSO-ANN model and other conventional methods and equation of states(EOS),the PSO-ANN model is a reliable and accurate approach for estimating Pb of crude *** is certified by high value of correlation coefficient(R2)and insignificant value of average absolute relative deviation(AARD%)which are obtained from PSO-ANN *** of this study could help reservoir engineers to have better understanding of reservoir fluid behavior in absence of reliable and experimental data samples.

关键词： Bubble point pressure Swarm intelligence Crude oil Artificial intelligence Reservoir fluid

Distribution of Helium Resources in Weihe Basin,Central China:Insight from 3D Magnetic Inversion

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Journal of Earth Science 2022年第4期33卷 977-992页

作者： Xuliang Feng Bingqiang Yuan Yuhong Li Chunguan Zhang Lijun Song school of Earth Sciences and engineering Xi'an Shiyou UniversityXi'an 710065China Shaanxi Key Laboratory of petroleum Accumulation Geology Xi'an Shiyou UniversityXi'an 710065China Xi'an Center China Geological SurveyXi'an 710054China

There is promising indication of helium-rich natural gas in Weihe ***,the lack of a detailed investigation on the origin and the spatial distribution of helium source rocks(mainly Yanshanian granites)limits the helium potentiality evaluation in Weihe Basin(WB).We performed three-dimensional(3 D)inversions of magnetic data in Weihe Basin and its adjacent areas to figure out the crustal thermal structure and the temporal-spatial distribution of deep granite in the *** on this,we have proposed a geological model of helium accumulation and predicted the potential area of helium *** results of 3 D magnetic inversion indicate that the granites in the deep Weihe Basin are mostly located at the central and southern parts of the basin,which are connected spatially with the granites in the North Qinling Orogenic *** granites were all derived from largescale intra-continental orogeny in the Qinling area during the mid-Mesozoic,providing a good material basis for crust-derived helium in the *** local uplift of the Curie surface makes the thermal fluid more actively,which contributes to helium *** faults developed in the WB are the migration pathway of crust-derived helium and the upward migration of the mantle-derived *** wells with high percentage helium are mostly located near the Weihe fault and the areas on the south of *** Wugong-Xi’an-Lantian area in the central and the Lintong-Weinan-Tongguan area in the eastern Weihe Basin are the most promising helium distribution ***,the region from the north of Taibai Mountain to Baoji City in the western Weihe Basin may also be another potential area of Helium resource.

关键词： Weihe Basin helium accumulation magnetic anomaly three-dimensional inversion Curie point depth

Late Mesozoic rifting and its deep dynamic mechanisms in the central Sulu orogenic belt: Records from Lingshan Island

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Science China Earth Sciences 2022年第9期65卷 1751-1771页

作者： Tengfei ZHOU Yaoqi ZHOU Nina SФAGER Paul Martin HOLM Zhenkai ZHANG Jun WANG Zhao LIANG Hongyu MU Yanjun CHENG Feifei LIU Miao WANG Yue ZHANG Hui ZHANG Yangjian GU Shihui DONG Hanjie ZHAO Manjie LI Yang CHEN Yanzi LIU school of Geosciences China University of Petroleum(East China)Qingdao 266580China Department of Geosciences and Natural Resource Management University of CopenhagenCopenhagen-K 1350Denmark Shandong Provincial Key Laboratory of Deep Oil&Gas China University of Petroleum(East China)Qingdao 266580China Shaanxi Center of Mineral geological Survey Shaanxi Institute of Geological SurveyXi'an 710068China school of Earth Sciences Yunnan UniversityKunming 650500China Department of Science and Technology Hebei GEO UniversityShijiazhuang 050031China College of Earth Science and engineering Shandong University of Science and TechnologyQingdao 266590China school of Architectural engineering Binzhou UniversityBinzhou 256500China Research Institute of petroleum Exploration and Development Shengli Oilfield CompanySINOPECDongying 257015China Key Laboratory of geological Safety of Coastal Urban Underground Space Ministry of Natural ResourcesQingdao Geo-Engineering Surveying InstituteQingdao 266101China

The Lingshan Island scientific drill confirms that two episodes(Laiyang period and Qingshan period) of rifting developed in the central Sulu orogenic belt(SOB) in Late Mesozoic. With a set of methods including fieldwork, drilling, core logging, zircon U-Pb dating and whole rock geochemistry applied, the age, the depositional sequence and the deep dynamic mechanisms of rift evolution were unraveled. The stratigraphic sequence of the Laiyang-Qingshan Groups on Lingshan Island was composed of two different rifting sequences:(1) Laiyang Group(147–125 Ma), which consists of deep-water gravity flow deposits with interlayers of intermediate volcanic rocks;and(2) Lower Qingshan Group(125–119 Ma), which unconformably overlies the former sequence and contains subaerial volcanic deposits and terrestrial deposits. The tectonic environment changed during the evolution of these two episodes of rifting: the rift was in a NNW-SSE extensional environment in the Laiyang period and showed the typical passive rifting character that “lithospheric extension and rifting preceded volcanism”. The passive rifting period was ended by a short WNW-ESE compression at about 125 Ma. After that, the tectonic environment transferred to a strong NW-SE extensional environment and the rifting evolved into a volcanic arc basin in the Qingshan period. The igneous rocks are shoshonitic to high-K calc-alkaline trachyandesites to trachytes with a few intercalated lamprophyres and a *** geochemical characteristics of the igneous rocks indicate that they are mantle-derived melts with a metasomatized mantle source and/or crustal contamination. In addition, an increased thinning of the lithosphere happened during the rifting *** low-angle subduction of the Paleo-Pacific plate in the Jurassic weakened the thickened SOB lithospheric mantle. The rollback of the subducting plate started in late Jurassic to early Cretaceous, and the SOB lithospheric mantle was delaminated synchronously because of t

关键词： Sulu orogenic belt Lingshan Island Late Mesozoic Rifting Slab subduction Basin dynamics

Source of silica and its implications for organic matter enrichment in the Upper Ordovician-Lower Silurian black shale in western Hubei Province,China:Insights from geochemical and petrological analysis

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petroleum Science 2022年第1期19卷 74-90页

作者： Quan-Sheng Cai Ming-Yi Hu Bao-Min Zhang Ngong Ngia An Liu Rui-Quan Liao Oumar Kane Hai Li Zhong-Gui Hu Qing-Jie Deng Jun-Jun Shen school of Geosciences Yangtze UniversityWuhanHubei 430100China Key Laboratory of Tectonics and petroleum Resources of Ministry of Education(China University of Geosciences) WuhanHubei 430074China Wuhan Center of China geological Survey WuhanHubei 430205China Department of Geology University of BueaP.O.Box 63BueaSouthwestCameroon school of petroleum engineering Yangtze UniversityWuhanHubei 430100China

To improve the understanding of the relationship between silica source and organic matter accumulation,the origin of silica and its implications for organic matter enrichment in the Upper OrdovicianLower Silurian(O_(3)w-S_(1)l)black shale in western Hubei Province in the middle Yangtze area,were investigated through geochemical and petrological *** results show that the O_(3)w-S_(1)l black shale is mainly composed of five lithofacies with varying graptolite abundance,total organic carbon(TOC),and silica *** silica and terrigenous siliciclastic input constitute the main silica sources in O_(3)w-S_(1)l black shale and they exhibit an upward inverse variation trend interpreted to be related to sea-level ***,with the increase in biogenic silica content or decrease in terrigenous siliciclastic input,TOC values in black shale initially rise and then fall,which is different from originally expected simple linear *** infer that organic matter enrichment and the distribution of silica from different origins are controlled by sea-level changes and variations in terrigenous input in a continental shelf with little hydrothermal *** environment with appropriate sea level and terrigenous input should be most favorable for organic matter accumulation,rather than one with excessive high sea level and less terrigenous input.

关键词： Biogenic silica Terrigenous siliciclastic input Organic matter enrichment Black shale Continental shelf Sea-level change Wufeng-Longmaxi formations

Reduction of global natural gas hydrate(NGH)resource estimation and implications for the NGH development in the South China Sea

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petroleum Science 2022年第1期19卷 3-12页

作者： Xiong-Qi Pang Cheng-Zao Jia Zhang-Xing Chen He-Sheng Shi Zhuo-Heng Chen Tao Hu Tong Wang Zhi Xu Xiao-Han Liu Xing-Wen Zhang En-Ze Wang Zhuo-Ya Wu Bo Pang State Key Laboratory of petroleum Resources and Prospecting Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China China National petroleum Corporation Beijing100007China Chemical and petroleum engineering Schulich School of EngineeringUniversity of CalgaryCalgaryT2N 1N4Canada Shenzhen Branch of China National Offshore Oil Corporation Ltd. GuangzhouGuangdong 510240China geological Survey of Canada Natural Resources CanadaCalgaryT2L 2A7Canada school of Earth&Space Sciences Peking UniversityBeijing100871China

There have been at least 29 groups of estimates on the global natural gas hydrate(NGH)resource since1973,varying greatly with up to 10,000 times and showing a decreasing trend with *** the South China Sea(SCS),35 groups of estimations were conducted on NGH resource potential since 2000,while these estimates kept almost the same with time,varying between 60 and 90 billion tons of oil equivalent(toe).What are the key factors controlling the variation trend?What are the implications of these variations for the NGH development in the world and the SCS?By analyzing the investigation characteristics of NGH resources in the world,this study divided the evaluation process into six stages and confirmed four essential factors for controlling the variations of *** indicated that the reduction trend reflects an improved understanding of the NGH formation mechanism and advancement in the resource evaluation methods,and promoted more objective evaluation ***,the analysis process and improved evaluation method was applied to evaluate the NGH resources in the SCS,showing the similar decreasing trend of NGH resources with *** utilizing the decreasing trend model,the predicted recoverable resources in the world and the SCS are(205-500)×10^(12)m^(3)and(0.8-6.5)×10^(12)m^(3),respectively,accounting for 20%of the total conventional oil and gas *** NGH resource in the SCS is only about 4%-6%of the previous estimates of 60-90 billion *** extracted completely,it only can support the sustainable development of China for 7 years at the current annual consumption level of oil and *** cannot be the main energy resource in future due to its low resource potential and lack of advantages in recovery.

关键词： Natural gas hydrate Resource evaluation South China Sea Global NGH resource Reduction trend in NGH resource

Inhibition of asphaltene deposition by Al_(2)O_(3) nanoparticles during CO_(2) injection

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petroleum Research 2023年第4期8卷 499-504页

作者： Ali Amraeiniya Alireza Rahimi Nadia Nikpour Siamand Salimi Baneh Farid Arabzadeh Mehdi Razavifar Department of petroleum engineering Islamic Azad UniversityCentral Tehran BranchTehranIran Department of petroleum engineering Islamic Azad UniversityLamerd BranchLamerdIran Department of Mechanical engineering Urmia UniversityUrmiaIran Department of petroleum and Natural Gas engineering Sahand University of TechnologyTabrizIran Department of petroleum engineering Kharg BranchIslamic Azad UniversityKhargIran Department of petroleum Enginering School of Chmical and Peoeum EngineeringShraz UnivertyShaz Iran

Carbon dioxide flooding is of interest due to its high oil-sweep efficiency for enhanced oil recovery and contribution to the reduction of greenhouse gas ***,when CO_(2)is injected into deep geological strata,asphaltene may *** this work,the effect of Al2O3 nanoparticles on the deposition of asphaltene was examined by assessing the variations of bond number and interfacial tension at different pressures and a temperature of 6℃.The asphaltene onset point and intensity were characterized using the bond number,which proved a better indicator of changes in oil droplet shape and interfacial tension with *** mixtures of toluene and n-heptane that contained two different kinds of asphaltenes were used as M and D oil samples.A 0.06 mass%addition of Al_(2)O_(3) nanoparticles,which worked best for reduction of interfacial tension,was also applied at various *** of nanoparticles to the oils prevented asphaltene precipitation in both synthetic samples by altering the slope of the plot of interfacial tension with pressure by 49.7% for the M sample and 9.0%for the D *** Al_(2)O_(3)nanoparticles were found to be more effective at inhibiting asphaltene precipitation for the M oil sample due to its lower H/C ratio and higher nitrogen content.

关键词： CO_(2)injection Enhanced oil recovery Asphaltenedeposition Aluminum oxidenanoparticles Interfacial tension Bond number

Evaluation Methods and Indexes for Ultra-deep petroleum Reservoir Preservation with Case Studies

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Acta Geologica Sinica(English Edition) 2022年第4期96卷 1388-1401页

作者： YUAN Yusong WANG Guojian HU Wenxuan CHEN Shuping WANG Xiaolin ZOU Yu WANG Xinpeng ZHANG Rongqiang HAO Yunqing Research Institute of petroleum Exploration and Development SinopecBeijing 100038China school of Earth Science and engineering Nanjing UniversityNanjing 210008China school of Geosciences Chinese University of Petroleum(Beijing)Beijing 102200China

Following consideration of the characteristics of high temperature,high pressure and high in-situ stress in ultradeep sedimentary basins,together with the existence of hydrocarbon phase state transformation,hydrocarbon-water-rock interaction and rock mechanical property transition at those depths,the evaluation index system for hydrocarbon preservation was *** physical leakage evaluation indexes can be divided into three categories:the dynamic efficiency indexes of micro-sealing,caprock integrity and natural gas *** chemical loss evaluation indexes can be divided into two categories:the thermochemical sulfate reduction(TSR)index in marine gypsum-bearing carbonate strata and the thermochemical oxidation of hydrocarbons(TOH)index in clastic *** slippage angle and overconsolidation ratio(OCR)are the key evaluation indexes in the evaluation of the integrity of shale *** intensity can be quantitatively calculated by use of the Zn PVT state parameter *** TOH strength can be used to estimate the degree of hydrocarbon chemical loss,based on the TOH-related authigenic calcite cement content or the degree of negativeδ^(13)C of authigenic *** the evaluation of ultra-deep preservation in specific areas,key indexes can be selected according to the local geological conditions,instead of all indexes needing to be evaluated for every scenario.

关键词： ultra-deep hydrocarbon preservation physical leakage chemical loss thermochemical sulfate reduction thermochemical oxidation of hydrocarbons

Vegetation recovery trends under dual dominance of climate change and anthropogenic factors in the severely damaged areas of the Wenchuan earthquake

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Journal of Mountain Science 2022年第11期19卷 3131-3147页

作者： WANG Qian WANG Ze-gen YONG Zhi-wei ZHAO Kai XIONG Jun-nan DU Xue-mei Zhao Yang school of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500China Applied Geology Research Center of China geological Survey Chengdu 610036China school of Civil engineering and Geomatics Southwest Petroleum UniversityChengdu 610500China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China

The occurrence of the Wenchuan earthquake caused the degradation of regional ecosystems,including vegetation ***,the post-seismic vegetation recovery and its driving forces on the spatial-temporal scale are still vague,especially in the severely damaged areas(including Wenchuan,Beichuan,Mianzhu,Shifang,Qingchuan,Maoxian,Anzhou,Dujiangyan,Pingwu and Pengzhou).Here,we detected vegetation recovery in the severely damaged areas by using Ensemble Empirical Mode Decomposition(EEMD)to analyze the time series characteristics of the Enhanced Vegetation Index(EVI),and explored the driving effects of climate,land use types,nighttime light,water system,slope,and clay content on vegetation recovery based on Geographically and Temporally Weighted Regression(GTWR)*** results indicated that the post-seismic vegetation recovery rate increased rapidly(acceleration>0)but slowed down after *** the areas of best vegetation recovery(EVI increments>0.1)were distributed in the north of the study area,the Minjiang River Basin,and front fault and central fault of the Longmenshan Fault *** the areas with the worst vegetation recovery(EVI increments0),but the impacts weakened after the earthquake,possibly due to the increase of secondary disasters induced by precipitation and the rise in maximum *** impact of cultivated land on vegetation recovery was mostly positive(regression coefficients>0),which may be related to the implementation of the Grain for Green *** nighttime light inhibited vegetation recovery(regression coefficients<0),which could be closely associated with *** results indicated that more attention should be paid to the nonlinear variatio

关键词： Vegetation recovery Enhanced Vegetation Index Ensemble empirical mode decomposition Geographically and Temporally Weighted Regression

An Integrated Framework for Geothermal Energy Storage with CO_(2)Sequestration and Utilization

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engineering 2023年第11期30卷 121-130页

作者： Yueliang Liu Ting Hu Zhenhua Rui Zheng Zhang Kai Du Tao Yang Birol Dindoruk Erling Halfdan Stenby Farshid Torabi Andrey Afanasyev State Key Laboratory of petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing 102249China school of petroleum engineering China University of Petroleum(Beijing)Beijing 102249China College of Carbon Neutrality Future Technology China University of Petroleum(Beijing)Beijing 102249China Equinor ASA Stavanger 4035Norway Department of petroleum engineering Cullen College of EngineeringUniversity of HoustonHoustonTX 77204USA Center for Energy and Resources engineering Department of ChemistryTechnical University of DenmarkKongens Lyngby 2800Denmark petroleum Systems engineering University of ReginaReginaSK S4S 0A2Canada Institute of Mechanics Moscow State UniversityMoscow 119192Russia

Subsurface geothermal energy storage has greater potential than other energy storage strategies in terms of capacity scale and time *** dioxide(CO_(2))is regarded as a potential medium for energy storage due to its superior thermal ***,the use of CO_(2)plumes for geothermal energy storage mitigates the greenhouse effect by storing CO_(2)in geological *** this work,an integrated framework is proposed for synergistic geothermal energy storage and CO_(2)sequestration and *** this framework,CO_(2)is first injected into geothermal layers for energy *** resultant high-energy CO_(2)is then introduced into a target oil reservoir for CO_(2)utilization and geothermal energy *** a result,CO_(2)is sequestrated in the geological oil reservoir *** results show that,as high-energy CO_(2)is injected,the average temperature of the whole target reservoir is greatly *** the assistance of geothermal energy,the geological utilization efficiency of CO_(2)is higher,resulting in a 10.1%increase in oil displacement *** to a storage-potential assessment of the simulated CO_(2)site,110 years after the CO_(2)injection,the utilization efficiency of the geological body will be as high as 91.2%,and the final injection quantity of the CO_(2)in the site will be as high as 9.529×10^(8)*** 1000 years sequestration,the supercritical phase dominates in CO_(2)sequestration,followed by the liquid phase and then the mineralized *** addition,CO_(2)sequestration accounting for dissolution trapping increases significantly due to the presence of residual *** importantly,CO_(2)exhibits excellent performance in storing geothermal energy on a large scale;for example,the total energy stored in the studied geological body can provide the yearly energy supply for over 3.5×10^(7) normal *** of this integrated approach holds great significance for large-scale geothermal energy storage

关键词： Geothermal energy storage CO_(2)sequestration Carbon neutrality Large-scale CO_(2)utilization

Mantle flow underneath the South China Sea revealed by seismic anisotropy

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National Science Review 2023年第10期10卷 54-61页

作者： Fansheng Kong Rui Gao Stephen S.Gao Kelly H.Liu Weiwei Ding Xiongwei Niu Aiguo Ruan Pingchuan Tan Jianke Fan Shaoping Lu Zhengyi Tong Liqun Cheng Wenfei Gong Yanghui Zhao Jiabiao Li Key Laboratory of Submarine Geosciences Second Institute of OceanographyMinistry of Natural Resources Southern Marine Science and engineering Guangdong Laboratory Geology and Geophysics Program Department of Geosciences and Geological and Petroleum Engineering Missouri University of Science and Technology school of Earth Sciences and engineering Sun Yat-sen University Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences

It has long been established that plastic flow in the asthenosphere interacts constantly with the overlying lithosphere and plays a pivotal role in controlling the occurrence of geohazards such as earthquakes and volcanic ***,accurately characterizing the direction and lateral extents of the mantle flow field is notoriously difficult,especially in oceanic areas where deployment of ocean bottom seismometers(OBSs) is expensive and thus *** this study,by applying shear wave splitting analyses to a dataset recorded by an OBS array that we deployed between mid-2019 and mid-2020 in the South China Sea(SCS),we show that the dominant mantle flow field has a NNW-SSE orientation,which can be attributed to mantle flow extruded from the Tibetan Plateau by the ongoing Indian-Eurasian *** addition,the results suggest that E-W oriented flow fields observed in South China and the Indochina Peninsula do not extend to the central SCS.

关键词： mantle flow South China Sea Tibetan Plateau seismic anisotropy shear wave splitting