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Acta Geologica Sinica(English Edition) 2018年第5期92卷 2034-2035页

作者： WANG Chunyu SUN Deyou TIAN Lihui BU Jun SHANG Yuhang College of Earth Sciences Jilin University College of Mining Engineering Heilongjiang University of Science and Technology Oil&Gas Technology research institute Changqing Oilfield Company CNPC National Engineering Laboratory for exploration and Development of Low-Permeability Oil & Gas Field

Objective Mesozoic volcanic rocks are mainly distributed in the Da Hinggan *** Baiyingaolao Formation is the main stratum in this area and has been considered to be formed in the Late *** scholars have researched these Mesozoic volcanic rocks in this area,which have been much debatable（Zhang Xiangxin et al.,2017）.A series of studies focusing on the Baiyingaolao Formation volcanic rocks in the middle-south section of

关键词： Pb ICP MS Latest Zircon U-Pb Age of the Baiyingaolao Formation Volcanic Rocks in the Keyihe Area of North-Central Da Hinggan Mountains

Climate characteristics of the eastern Mongolian Plateau,China during the early Early Cretaceous(145-132 Ma):Palynological evidence from the Tongbomiao Formation in Well Hong-6,Hailar Basin

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China Geology 2022年第3期5卷 439-456页

作者： Yan Zhang Yun-fei Xue Chun-yang Bu Ti Li Xin Zhang Yu-dong Jin Yue-wu Sun College of Earth Sciences Jilin UniversityChangchun 130061China Geological Laboratory Exploration and Development Research Institute of Daqing Oilfield Company Ltd.Daqing 163712China research Center of Paleontology and Stratigraphy Jilin UniversityChangchun 130026China

This study identified two palynological assemblages,namely Bayanhuasporites-Cycadopites-Protoconiferus and Cicatricosisporites-Cedripites-Perinopollenites,in the Tongbomiao Formation in the Hongqi Sag in the Hailar Basin,Inner Mongolia,China for the first *** former is distributed in the lower part of the Tongbomiao Formation and is characterized by abundant gymnosperm pollen and diverse fern *** them,the gymnosperm pollen is dominated by Paleoconifer(4.98%-31.62%)and Cycadopite(8.55%-25.23%)pollen grains and also includes other pollen grains such as Classopollis,Parcisporites,Erlianpollis,Callialasporites,and *** fern spores in the former palynological assemblage contain Bayanhuasporite(0-8.96%),Granulatisporites(0.93%-6.97%),and some important Cretaceous genera,such as Cicatricosisporites,Concavissimisporites,Densoisporites,Hsuisporites,Foraminisporis,and *** Cicatricosisporites-Cedripites-Perinopollenites palynological assemblage is distributed in the upper part of the Tongbomiao ***(77.30%),Pinaceae(31.9%),and Paleoconiferus(19.02%)pollen predominate this palynological assemblage,and Quadraeculina,Erlianpollis,and Jiaohepollis pollen are also common in this *** fern spores in this palynological assemblage include abundant Cicatricosisporites(4.29%).Besides,Concavissimisporites,Aequitriradites,and Leptolepidites are also common in this palynological *** angiosperm pollen has been found in both palynological *** identification of both palynological assemblages provides important evidence for the biostratigraphic correlation between the Hailar Basin and its adjacent *** also enables the reconstructions of the Berriasian-Valanginian(Early Cretaceous)vegetation and the paleoclimate on the eastern Mongolian Plateau during 141-132 *** vegetation reconstructed on the palynological data of the represented by Hailar Basin in eastern Mongolian Plateau(141.6-141.4 Ma),form co

关键词： Tongbomiao Formation Palynological Assemblages Gymnosperm Berriasian-Valanginian Palaeovegetation Palaeoclimate Hailar Basin Mongolian Plateau China

Characteristics and EOR mechanisms of nanofluids permeation flooding for tight oil

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Petroleum exploration and Development 2020年第4期47卷 810-819页

作者： DING Bin XIONG Chunming GENG Xiangfei GUAN Baoshan PAN Jingjun XU Jianguo DONG Jingfeng ZHANG Chengming Key Laboratory of oilfield Chemicals CNPCBeijing 100083China PetroChina research institute of Petroleum exploration&Development Beijing 100083China Xinjiang oilfield Company PetroChinaKaramay 834000China jilin oilfield Company PetroChinaSongyuan 138000China

Tight oil reservoir development is faced with the key technical problem that"water cannot be injected and oil cannot be produced"*** the diphenyl ethers water-soluble(gemini)surfactants as water phase shell and C10–C14 straight-chain hydrocarbon compounds as oil phase kernel,a nanofluids permeation flooding system was prepared by microemulsion technology,and its characteristics and EOR mechanisms were evaluated through *** system has the following five characteristics:(1)"Small-size liquid":the average particle size of the system is less than 30 nm,which can greatly reduce the starting pressure gradient of water injection,and effectively enter and expand the sweep volume of micro-nano matrix;(2)"Small-size oil":the system can break the crude oil into"small-size oil"under the flow condition,which can greatly improve the percolation ability and displacement efficiency of the crude oil in the micro-nano matrix;(3)Dual-phase wetting:the system has contact angles with the water-wet and oil-wet interfaces of(46±1)°and(68±1)°respectively,and makes it possible for capillarity to work fully under complex wetting conditions of the reservoir;(4)High surface activity:the interfacial tension between the system and crude oil from a tight oil reservoir in Xinjiang is 10-3–10-2 mN/m,indicating the system can effectively improve the displacement efficiency of oil in fine pore throats;(5)Demulsification and viscosity reduction:the system has a demulsification and viscosity reduction rate of more than 80%to inversely emulsified crude oil from a tight oil reservoir in Xinjiang,so it can improve the mobility of crude oil in the reservoir and *** system can be used to increase oil production by fracturing in tight reservoirs,replenish formation energy by reducing injection pressure and increasing injection rate,and enhance oil recovery by displacement and cyclic injection,providing key technical support for effective production and efficient development and reco

关键词： tight oil nanofluid permeation flooding system characteristics EOR small-size liquid small-size oil dual-phase wetting

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Characteristics and mechanism of smart fluid for sweep-controlling during CO_(2) flooding

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Petroleum exploration and Development 2023年第3期50卷 741-750页

作者： XIONG Chunming WEI Falin YANG Haiyang ZHANG Song DING Bin LEI Zhengdong ZHANG Deping ZHOU Qiang PetroChina research institute of Petroleum exploration&Development Beijing 100083China Key Laboratory of oilfield Chemistry of CNPC Beijing 100083China Structural Analysis and Testing Center University of Science and Technology of ChinaHefei 230026China CCS-EOR Development Company of PetroChina jilin oilfield Songyuan 138000China

A smart response fluid was designed and developed to overcome the challenges of gas channeling during CO_(2)flooding in low-permeability,tight oil *** fluid is based on Gemini surfactant with self-assembly capabilities,and the tertiary amine group serves as the response *** responsive characteristics and corresponding mechanism of the smart fluid during the interaction with CO_(2)/oil were studied,followed by the shear characteristics of the thickened aggregates obtained by the smart fluid responding to CO_(2).The temperature and salt resistance of the smart fluid and the aggregates were evaluated,and their feasibility and effectiveness in sweep-controlling during the CO_(2)flooding were *** research reveals:(1)Thickened aggregates could be assembled since the smart fluid interacted with CO_(2).When the mass fraction of the smart fluid ranged from 0.05%to 2.50%,the thickening ratio changed from 9 to 246,with viscosity reaching 13 to 3100 *** a result,the sweep efficiency in low-permeability core models could be increased in our experiments.(2)When the smart fluid(0.5%to 1.0%)was exposed to simulated oil,the oil/fluid interfacial tension decreased to the level of 1×10^(-2)mN/***,the vesicle-like micelles in the smart fluid completely transformed into spherical micelles when the fluid was exposed to simulated oil with the saturation greater than 10%.As a result,the smart fluid could maintain low oil/fluid interfacial tension,and would not be thickened after oil exposure.(3)When the smart fluid interacted with CO_(2),the aggregates showed self-healing properties in terms of shear-thinning,static-thickening,and structural integrity after several shear-static ***,this fluid is safe to be placed in deep reservoirs.(4)The long-term temperature and salt resistance of the smart fluid and thickened aggregates have been confirmed.

关键词： low-permeability reservoirs tight oil CO_(2)flooding sweep-controlling smart fluid fluid characteristics Gemini surfactant self-thickened self-healing

Texture and tectonic attribute of Cenozoic basin basement in the northern South China Sea

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Science China Earth Sciences 2014年第6期57卷 1199-1211页

作者： SUN XiaoMeng ZHANG XuQing ZHANG GongCheng LU BaoLiang YUE JunPei ZHANG Bin College of Earth Sciences Jilin University research institute China National Offshore Oil Corporation College of Geology Engineering and Geomatics Chang'an University research institute of exploration & Development PetroChina Liaohe Oilfield Company

Based on the drilling data,the geological characteristics of the coast in South China,and the interpretation of the long seismic profiles covering the Pearl River Mouth Basin and southeastern Hainan Basin,the basin basement in the northern South China Sea is divided into four structural layers,namely,Pre-Sinian crystalline basement,Sinian-lower Paleozoic,upper Paleozoic,and Mesozoic structural *** paper discusses the distribution range and law and reveals the tectonic attribute of each structural *** Pre-Sinian crystalline basement is distributed in the northern South China Sea,which is linked to the Pre-Sinian crystalline basement of the Cathaysian Block and together they constitute a larger-scale continental block—the Cathaysian-northern South China Sea continental *** Sinian-lower Paleozoic structural layer is distributed in the northern South China Sea,which is the natural extension of the Caledonian fold belt in South China to the sea *** sediments are derived from southern East China Sea-Taiwan,Zhongsha-Xisha islands and Yunkai ancient uplifts,and some small basement *** Caledonian fold belt in the northern South China Sea is linked with that in South China and they constitute the wider fold *** upper Paleozoic structural layer is unevenly distributed in the northern South *** the basement of Beibu Gulf Basin and southwestern Taiwan Basin,the structural layer is composed of the stable epicontinental sea *** distribution areas in the Pearl River Mouth Basin and the southeastern Hainan Basin belong to ancient uplifts in the late Paleozoic,lacking the upper Paleozoic structural *** stratigraphic distribution and sedimentary environment in Middle-Late Jurassic to Cretaceous are characteristic of differentiation in the east and the *** marine,paralic deposit is well developed in the basin basement of southwestern Taiwan but the volcanic activity is not *** marine and paralic facies deposit is di

关键词： northern South China Sea basin basement structural layer tectonic attribute

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Age assignment and geological significance of the “Budate Group” in the Hailar Basin

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Science China Earth Sciences 2013年第5期56卷 970-979页

作者： MENG Qi'An WAN ChuanBiao ZHU DeFeng ZHANG YanLong GE WenChun WU FuYuan exploration and Development research institute Daqing Oilfield Limited Company College of Earth Sciences Jilin University State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences

Age and nature of the Budate Group in the Hailar Basin are of great significance in studying the evolution of the Hailar Basin and the Xing'an-Mongolian Orogenic Belt(XMOB).Zircon U-Pb ages of eight volcanic rocks from the Budate Group and two basement granites in the Hailar Basin were reported in this *** dating results indicated that the formation of these volcanic rocks was consistent with the emplacement of Late Paleozoic basement granite in age(356-290 Ma),i.e.,Early Carboniferous to Early Permian rather than Early *** with regional geology,it was concluded that the Budate Group is the component of the basement of the Hailar Basin,and these volcanic rocks were formed at an active continental margin,which is related to the closure of the Hegen Mountains suture *** captured Neoproterozoic zircons(814-873 Ma) were probably derived from the Neoproterozoic basement materials in the Ergun Block,implying the close genetic relationships between the Ergun Block(including the Hailar Basin) and the Siberian Block.

关键词： Budate Group volcanic rocks zircon U-Pb dating geological significance Hailar Basin

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Provenance and paleogeography of Carboniferous-Permian strata in the Bayanhot Basin:Constraints from sedimentary records and detrital zircon geochronology

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Geoscience Frontiers 2021年第3期12卷 113-131页

作者： Junfeng Zhao Yijun Zhou KeWang Xuan Li Zhanrong Ma Zhengzhong Ruan DongWang Rui Xue State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi'an710069China Changqing Branch of geophysical research institute BGPCNPCXi'an 710021China exploration and Development research institute Changqing Oilfield Company of PetroChinaXi'an 710021China Twelfth Oil Production Plant Changqing Oil Field Company of PetroChinaHeshui 745400China

The Bayanhot Basin is a superimposed basin that experienced multiple-staged tectonic movements;it is in the eastern Alxa Block,adjacent to the North China Craton(NCC)and the North Qilian Orogenic Belt(NQOB).There are well-developed Paleozoic-Cenozoic strata in this basin,and these provide a crucial window to a greater understanding of the amalgamation process and source-to-sink relationships between the Alxa Block and surrounding tectonic ***,due to intensive post-depositional modification,and lack of subsurface data,several fundamental issues-including the distribution and evolution of the depositional systems,provenance supplies and source-to-sink relationships during the Carboniferous-Permian remain unclear and thus hinder hydrocarbon exploration and limit the geological understanding of this *** integrated outcrop surveys,new drilling data,and detrital zircon dating,this study examines the paleogeographic distribution and evolution,and provenance characteristics of the Carboniferous-Permian strata in the Bayanhot *** results show that the Bayanhot Basin experienced a long-term depositional evolution process from transgression to retrogression during the Carboniferous-late *** transgression extent could reach the central basin in the early *** maximum regional transgression occurred in the early Permian and might connect the Qilian and North China seas with each ***,a gradual regression followed until the end of the *** northwestern NCC appeared as a paleo-uplift area and served as a sediments provenance area for the Alxa Block at that *** NCC,Bayanwula Mountain,and NQOB jointly served as major provenances during the *** was no ocean separation,nor was there an orogenic belt between the Alxa Block and the NCC that provided sediments for both sides during the *** accretion of the Alxa and North China blocks should have been completed before t

关键词： Carboniferous-Permian Detrital zircon geochronology Paleogeography Bayanhot Basin Alxa Block North China Craton

3D visualization of hydraulic fractures using micro-seismic monitoring:Methodology and application

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Petroleum 2022年第1期8卷 92-101页

作者： Chenghua Ou Chenggang Liang Zhaoliang Li Li Luo Xiao Yang State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500China Petroleum Engineering School Southwest Petroleum UniversityChengdu610500China Jiqing Operation Area of PetroChina Xinjiang oilfield Branch Fukang831511China exploration and Development research institute of PetroChina Qinghai oilfield Branch Dunhuang736200China Southwest Branch of China Petroleum Group Logging Co. Ltd.Chongqing400021China Southwest research institute of Dongfang geophysical exploration Co. Ltd.Chengdu610051China

In this paper,a new 3D visualization technical method was developed for hydraulic fractures using micro-seismic *** technical method consists of four steps:*** the geologic hydraulic fracture model based on seismic source location data from micro-seismic monitoring;*** a hydraulic fracture indication model,relying on the 3D spatial freeze-frame of micro-seismic monitoring sources from hydraulic fracturing;*** a hydraulic fracture density model using the intensity from the micro-seismic monitoring;and *** a 3D visualization of the hydraulic fractures,relying on the spatial constraints of the density model,the hydraulic fracture indication model,and the properties of the hydraulic *** proposed technical method was used to produce 3D visualizations of the hydraulic fractures in well X in the Jiao reservoir,China,and the 3D visualizations of the distribution,development,extent and cutting relationships of hydraulic fractures were successfully *** results show that this technical method can be used as a practical and reliable approach to characterize hydraulic fractures.

关键词： 3D visualization Micro-seismic monitoring Hydraulic fracture Jiao reservoir Reservoir modelling

Why Can China Realize the Continental“Shale Oil Revolution”?

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Journal of Earth Science 2022年第5期33卷 1324-1327页

作者： Caineng Zou Zhi Yang Guoxin Li Jianzhong Li Xianyang Liu Yong Tang Tao Jiang Yu Yang Xuefeng Bai Songqi Pan Minghui Lu Zhengdong Lei Bo Cai PetroChina research institute of Petroleum exploration and Development Beijing 100083China PetroChina Qinghai oilfield Company Dunhuang 736202China PetroChina Tuha oilfield Company Hami 839009China PetroChina Changqing oilfield Company Xi'an 710018China PetroChina Xinjiang oilfield Company Karamay834000China PetroChina jilin oilfield Company Songyuan138000China PetroChina Southwest Oil and gas field company Chengdu610000China PetroChina Daqing oilfield Comapny Ltd. Daqing163712China

0 INTRODUCTION Continental shale oil is a strategic alternative resource to ensure the safety of national oil supply and improve the level of industrial *** is a large country of continental oil resources,accounting for 90%of the total onshore oil resources;and China is also a major producer of continental oil,accounting for about 93%of the total oil production(Yang et al.,2019;Jia et al.,2018).

关键词： Continental shale accounting

Reservoir Characteristics and Controlling Factors of Silurian Lower Kepingtage Formation in Tahe Area, Tarim Basin, NW China

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Journal of Earth Science 2017年第6期28卷 1135-1144页

作者： Ruohan Liu Zaixing Jiang Ming Wang Weili Yang Jingxiang Guo Minghao Wu Yi Gao Shanyazi Wei Zhihong Nie Hong He School of Energy Resources China University of Geosciences Beijing 100083 China institute of Earth Sciences China University of Geosciences Beijing 100083 China exploration and Production research institute SINOPEC Beijing 100083 China geophysical-China oilfield Services Limited Tianjin 300451 China PetroChina Coalbed Methane Company Limited Beijing 100028 China

With the breakthrough of exploration in Well TP16-1, the lower Kepingtage Formation becomes a key target for petroleum exploration of deep clastic reservoir in Tahe area. In this paper we focused on the research of the reservoir characteristics and its controlling factors in two sub-member formations（S1k11 and S1k13）. Based on X-ray diffraction, conventional physical properties data（porosity and permeability） and reservoir storage space data（casting thin section and scanning electron microscope）, we determined that the S1k1 Formation belongs to extra-low porosity and permeability reservoir, although the upper S1k13 Formation shows relative better physical characteristic than the lower S1k11 Formation. The development of storage space in the study area is controlled by sedimentary microfacies, diagenesis process. Reservoirs in S1k1 Formation are mainly located in channel（S1k11 sandstones） and sand flat（S1k13 sandstones）. The sand flat sediments with a more coarse grain size compared with the channel. In diagenesis, compaction is the major controlling factor for reducing the porosity, followed by cementation. Dissolution of diagenesis is the major controlling factor in enhancing the reservoir porosities. Compared with channel（S1k11） sandstones, sand flat sandstones（S1k13） have better reservoir quality for its weaker compaction, cementation and stronger dissolution. On the basis of sedimentary characteristics（grain size and subfacies）, physical property（porosity and permeability） and reservoir storage space, we divide the S1k1 reservoir into three categories（I, II and III）. Type I reservoir is high quality reservoir. It is mainly distributed in the south area of S1k11 and S1k13 reservoir. Type II is moderate reservoir. It is located in the middle of S1k11 reservoir and in the north of S1k13 reservoir. Type III is the poor reservoir. It is only located in the north of S1k11 reservoir.

关键词： reservoir characteristics controlling factors reservoir assessment lower Kepingtage Formation Tahe area Tarim Basin