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Journal of Oceanology and Limnology 2024年第3期42卷 744-759页

作者： Wei LI Mingyue CAO Meifang MENG caiwei fan Hui LI Jia LI Wanqiu WU Ruiqing QIN Xingan LI Yiming LIU State Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao 266580China School of Geosciences China University of Petroleum(East China)Qingdao 266580China Zhanjiang Branch China National Offshore Oil Corporation CompanyZhanjiang 524057China

A transfer zone in rift basins preserves important information on regional tectonic evolution and plays significant roles in hydrocarbon *** on the systematic analysis of 3D seismic data and hydrocarbon accumulation conditions,the geometry,kinematics,and reservoir control of a large synthetic overlapping transfer zone in the south of the Wenchang A subsag in the Zhujiang(Pearl)River Mouth basin were *** indicate that the development and evolution of the transfer zone was controlled by the interaction between pre-existing faults and regional stress *** intense rifting of the main faults of the transfer zone controlled the development of source rocks and faultcontrolled slope break *** strike-slip overprint since the Oligocene is conducive to the formation of a large-scale fault-anticline trap,and the secondary faults in the transfer zone contribute to the hydrocarbon *** conjugate intersection area of the NE-and NW-trending faults offers more opportunity for hydrocarbon migration and accumulation.

关键词： transfer zone pre-existing fault regional stress transformation Cenozoic Wenchang A Subsag Zhujiang(Pearl)River Mouth Basin

超压盆地水力破裂与天然气成藏的关系——以莺歌海盆地乐东斜坡区LD-A气田为例

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天然气工业 2024年第6期44卷 23-32页

作者：贾茹付晓飞范彩伟靳叶军王升王海学罗静爽东北石油大学非常规油气研究院东北石油大学“陆相页岩油气成藏及高效开发”教育部重点实验室东北石油大学三亚海洋油气研究院中海石油(中国)有限公司湛江分公司

莺歌海盆地乐东斜坡区LD-A气田的发现进一步证实了高温高压岩性圈闭领域的巨大资源潜力。该气田储层压力系数最高可达2.3,流体超压诱发的水力破裂对天然气的运聚起到重要的控制作用,明确超压条件下地层是否发生水力破裂及其演化过程是... 详细信息

莺歌海盆地乐东斜坡区LD-A气田的发现进一步证实了高温高压岩性圈闭领域的巨大资源潜力。该气田储层压力系数最高可达2.3,流体超压诱发的水力破裂对天然气的运聚起到重要的控制作用,明确超压条件下地层是否发生水力破裂及其演化过程是深入研究莺歌海盆地天然气成藏的关键。为此,在明确天然气垂向输导体系的基础上,以岩石破裂准则为理论依据,利用地应力及岩石抗张强度确定水力破裂模式,厘定了地层水力破裂条件;最终结合超压演化,分析了水力破裂动态演化过程对天然气成藏过程的控制作用。研究结果表明:(1)断裂、亚地震断裂和裂缝共同构成了LD-A气田天然气垂向输导体系,超压诱发的水力破裂控制了输导体系的启闭性和有效性,决定了天然气能否规模富集。(2)LD-A气田的中深层发育张性水力破裂,其中LD-A1气区现今黄流组顶部处于水力封闭状态,梅山组顶部处于水力渗漏状态;LD-A2气区和LD-A3气区上中新统黄流组顶部和中中新统梅山组顶部现今均处于水力封闭状态。(3)LD-A气田的水力破裂演化存在封闭—破裂—封闭型(LD-A1气区与LD-A2气区)和持续封闭型(LD-A3气区)2种类型,不同的水力破裂演化过程导致了天然气在不同层位砂体差异性充注和富集。结论认为,LD-A1气区与LD-A2气区浅层上新统莺歌海组二段和上中新统黄流组优质砂体是天然气有利富集对象,LD-A3气区应在埋藏更深的梅山组砂岩中寻找突破。

关键词：莺歌海盆地乐东斜坡区超压水力破裂输导体系天然气成藏

维普期刊数据库博看期刊

珠江口盆地文昌A凹陷西部新生代断裂体系特征及演化过程

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中国海上油气 2024年第3期36卷 37-48页

作者：徐莅莅范彩伟李明李辉徐彬程燕君吴智平中国石油大学(华东)地球科学与技术学院山东青岛266580 中海石油(中国)有限公司湛江分公司广东湛江524057 中海石油(中国)有限公司海南分公司海南海口570312 山东科技大学地球科学与工程学院山东青岛266590

断裂体系发育是珠江口盆地文昌A凹陷西部地区新生代构造演化的重要表现形式。利用最新的三维地震资料,在精细刻画断裂体系静态特征的基础上,结合断层活动速率计算恢复断裂体系的动态演化过程,明确了文昌A凹陷西部地区新生代断裂体系发... 详细信息

断裂体系发育是珠江口盆地文昌A凹陷西部地区新生代构造演化的重要表现形式。利用最新的三维地震资料,在精细刻画断裂体系静态特征的基础上,结合断层活动速率计算恢复断裂体系的动态演化过程,明确了文昌A凹陷西部地区新生代断裂体系发育的时空差异;并结合区域应力背景分析,探讨了断裂体系演化的成因机制,认为新生代以来三大板块间俯冲、碰撞及古南海俯冲消亡、新南海扩张共同造成的南海北缘区域伸展应力场顺时针旋转控制了断裂体系演化的时空差异。研究表明,文昌A凹陷西部地区断裂体系的发育演化经历了裂陷、拗陷与构造活化三个阶段,分别发育了NE(NEE)向、近EW向以及NW(NWW)向三组优势方向断裂,揭示了区域应力场伸展方向由NW—SE向到近SN向再到NNE—SSW向顺时针转变的过程;依据断裂的组合及沿承关系可将其划分为早期发育的NE向与后期发育的NW向两组交叠断裂带,NE向断裂带活动强度大、具有强烈伸展性质,NW向断裂带与基底先存断裂密切相关,活动强度弱、叠加一定走滑性质。文昌A凹陷西部新生代断裂体系演化的时空差异是对南海北缘区域应力场顺时针旋转的响应。

关键词：断裂体系区域应力场先存断裂文昌A凹陷西部珠江口盆地

Fluid Charging and Paleo-pressure Evolution in the Ledong Slope Zone of the Yinggehai Basin,South China Sea

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Acta Geologica Sinica(English Edition) 2023年第3期97卷 796-815页

作者： ZHAO Jing HUANG Zhilong MA Jian WANG Rui YANG Yizhuo fan caiwei ZHOU Ying XU Maguang College of Geosciences China University of Petroleum(Beijing)Beijing 102249China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China Beijing Research Institute of Uranium Geology Beijing 100029China Hainan Branch of the China National Offshore Oil Corporation Ltd. HaikouHainan 570100China Zhanjiang Branch of the China National Offshore Oil Corporation Ltd. ZhanjiangGuangdong 524057China University of Alberta Alberta T6G2R3Canada

Large numbers of gas reservoirs have been discovered in overpressure *** charging has a close relationship with paleo-pressure evolution,affecting the migration of gas *** study fluid charging and the related pressure system,we analyzed burial histories and fluid inclusion(PVTx)simulations and conducted basin modeling of the Ledong Slope Zone in the Yinggehai Basin as an *** the basis of fluid-inclusion assemblages(FIAs),homogenization temperature(Th),final melting temperature(Tm,ice)and Raman spectroscopy in fluid inclusions,there are three stages of fluid charging:during the first and second stage,methane-dominated fluid was charged at 2.2–1.7 Ma and 1.7–0.9 Ma,*** the third stage,CO_(2)-rich hydrothermal fluid was charged since 0.9 *** could be concluded from the well-logging data that the disequilibrium compaction in the Yinggehai Fm.,along with the fluid expansion and clay diagenesis in the Huangliu and Meishan formations,resulted in the overpressure in the Ledong slope *** evolution of paleo-pressure was affected by the sedimentation rate of the Yinggehai Fm.,as well as the hydrocarbon generation ***,the Ledong Slope Zone is less affected by diapir activity than the nearby diapir *** on fluid inclusions,paleo-pressure,basin modeling and geological background,the gas migration history of the Ledong Slope Zone can be divided into four stages:in the first stage,excess pressure was formed around 5 Ma;from 2.2 to 1.7 Ma,there was a reduction in the charging of hydrocarbon fluid and steadily increasing excess pressure;during the 1.7–0.9 Ma period a large amount of hydrocarbon was generated,excess pressure increasing significantly and hydraulic fractures forming in mudstones,With gas reservoirs developing in structural highs;since 0.9 Ma,CO_(2)-rich hydrothermal fluid accumulated in reservoirs adjacent to faults and the pressure coefficient remained *** research results are helpful in the study

关键词： fluid inclusions fluid charging overpressure Ledong slope zone Yinggehai Basin

Genesis and Characteristics of Miocene Deep-water Clastic Rocks in Yinggehai and Qiongdongnan Basins,Northern South China Sea

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Acta Geologica Sinica(English Edition) 2021年第1期95卷 153-166页

作者： fan caiwei XU Changgui XU Jie Zhanjiang Branch of China National Offshore Oil Corporation Ltd. ZhanjiangGuangdong 524057China School of Ocean Sciences China University of Geosciences(Beijing)Beijing 100083China

Various deep-water deposits developed in the Yinggehai Basin and Qiongdongnan Basin(Ying-Qiong Basin)in the northern South China Sea,making the two basins significantly hydrocarbon-producing areas and ideal for studying the genetic mechanism and sedimentary characteristics of deep-water clastic *** cores,image well logging,heavy mineral assemblages,and seismic data,we thoroughly studied the geometry,tectonic background,driving mechanism and source-to-sink process of deep-water deposits in the study *** results showed that:(1)there were five genetic mechanisms of deep-water clastic rock,i.e.,slides,slumps,debris flows,turbidity currents,and bottom currents.(2)The sliding deposits were distributed from the delta front to the continental slope *** slumping deposits were mainly distributed at the continental slope toe or the basin’s central area,far from the delta front The turbidity deposits were widely developed in the deep-water area,but with huge differences in *** bottom currents mainly reworked previous deposits far from the slope.(3)Slip and extension along the preexisting fault zone were the main structural factors that drive the axial channel formation at the slope foot.(4)The sand-rich gravity sediment flows in the Ying-Qiong basin were primarily caused by the direct supply of terrigenous debris into the marine environment over the slope break.

关键词： deep-water sandstone genesis Yinggehai and Qiongdongnan Basins

Velocity model and time-depth conversion for the northwestern South China Sea deepwater areas

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Acta Oceanologica Sinica 2015年第4期34卷 56-61页

作者： LIU Aiqun CHEN Dianyuan LI Wentuo fan caiwei HE Jianwei Zhanjiang Branch of China National Offshore Oil Corporation Limited

There are rich natural gas resources in the northwestern South China Sea deepwater areas, with poor degree of exploration. Because of the unique tectonic, sedimentary background of the region, velocity model building and time-depth conversion have been an important and difficult problem for a long time. Recent researches in this direction have revealed three major problems for deepwater areas, i.e., the way to determine error correction for drilling velocity, the optimization of velocity modeling, and the understanding and analysis of velocity variations in the slope areas. The present contribution proposes technical solutions to the problems：（1） velocity correction version can be established by analyzing the geology, reservoir, water depths and velocity spectrum characteristics;（2） a unified method can be adopted to analyze the velocity variation patterns in drilled pale structural positions;and （3） across-layer velocity is analyzed to establish the velocity model individually for each of the layers. Such a solution is applicable, as shown in an example from the northwestern South China Sea deepwater areas, in which an improved prediction precision is obtained.

关键词： time-depth conversion velocity modeling deepwater areas continental slope South China Sea

南海西部晚中生代岩浆弧:KP1-1-1井碎屑锆石约束

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地球科学 2022年第7期47卷 2328-2336页

作者：范彩伟胡林胡潜伟中海石油(中国)有限公司湛江分公司广东湛江524057 中海石油(中国)有限公司海南分公司海南海口570312 中国石油大学地球科学与技术学院山东青岛266000

晚中生代是古太平洋板块俯冲和南海北部岩浆弧发育时期,开展珠江口盆地KP1-1-1井钻遇的浅变质砂岩的近源沉积研究有助于揭示岩浆弧源区的构造特点.根据LA-ICPMS碎屑锆石分析,KP1-1-1浅变质砂岩中存在129~155 Ma、155~172 Ma和172~196 M... 详细信息

晚中生代是古太平洋板块俯冲和南海北部岩浆弧发育时期,开展珠江口盆地KP1-1-1井钻遇的浅变质砂岩的近源沉积研究有助于揭示岩浆弧源区的构造特点.根据LA-ICPMS碎屑锆石分析,KP1-1-1浅变质砂岩中存在129~155 Ma、155~172 Ma和172~196 Ma三个年龄组分,这一特点与区域上构造岩浆事件一致.碎屑岩浆锆石流体活动性元素富集(如U和Th),高场强元素亏损(如Nb、Hf和Ti);元素组成U/Yb(0.34~3.92)、Sc/Yb(0.48~2.28)、Hf/Th(14.4~186.6)和Th/Nb(24.3~462.7)具有大陆岩浆弧特点;计算的锆石Ti温度为551~786℃,表明属于低温弧岩浆作用.碎屑岩中172~196 Ma锆石组分记录了东沙-大仑-雁荡岩浆弧向西南的进一步延伸,与侏罗纪早期古太平洋斜向俯冲到华南陆块之下有关. 155~172 Ma岩浆锆石与古板块强烈俯冲有关,对应于华南165~150 Ma大规模花岗质岩浆活动. 129~155 Ma时期板块俯冲减弱或俯冲带后撤,可与浙闽同时期板内强烈火山活动对比.碎屑岩中测得最年轻年龄为128.8 Ma,表明KP1-1-1钻遇浅变质砂岩形成时代晚于128 Ma,应属于白垩系,不是传统上认为的下古生界岩系.

关键词：南海碎屑锆石岩浆弧晚中生代地层厘定地质年代学

莺歌海大型走滑盆地构造变形特征及其地质意义

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石油勘探与开发 2018年第2期45卷 190-199页

作者：范彩伟中海石油(中国)有限公司湛江分公司广东湛江524057

在系统整理大地构造资料的基础上,研究莺歌海盆地隐蔽式走滑构造变形及其与沉积、超压、油气运移之间的关系。研究发现:(1)左行走滑伸展派生的局部张性破裂主要发育在距今10.5 Ma之前,这些破裂在东斜坡大型鼻状凸起大量分布,并在晚期流... 详细信息

在系统整理大地构造资料的基础上,研究莺歌海盆地隐蔽式走滑构造变形及其与沉积、超压、油气运移之间的关系。研究发现:(1)左行走滑伸展派生的局部张性破裂主要发育在距今10.5 Ma之前,这些破裂在东斜坡大型鼻状凸起大量分布,并在晚期流体超压作用下幕式活化,成为盆地斜坡地区油气垂向运移的主导通道;(2)右行走滑伸展有利于沉积速率增大和区域欠压实盖层形成,其派生局部张性破裂作用是底辟发育的诱发动力,而底辟发育又进一步放大局部张性破裂发育规模;(3)左行走滑作用在距今10.5 Ma开始减弱,产生北部挤压、南部旋转伸展(北挤南伸)的构造运动,造成盆地北部河内凹陷地层抬升剥蚀、南部莺歌海凹陷碎屑岩供应量激增,最终导致莺歌海凹陷在东、西非对称斜坡地貌上分别形成迁移式斜坡水道化海底扇和叠置式海底扇。

关键词：莺歌海盆地走滑盆地隐蔽式走滑构造变形张性破裂底辟构造非对称斜坡中图

莺-琼盆地高压成因输导体系特征、识别及其成藏过程

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石油与天然气地质 2018年第2期39卷 254-267页

作者：范彩伟中海石油(中国)有限公司湛江分公司广东湛江524057

莺-琼盆地为新生代的高温高压快速沉降盆地,通常伴随着热流底辟体的发育,形成了异于常压盆地的油气输导体系,由地层深部压力释放形成的底辟和裂缝是莺-琼盆地天然气运移的主要输导通道。研究利用沿层三维地震相干分析及曲率分析技术对莺... 详细信息

莺-琼盆地为新生代的高温高压快速沉降盆地,通常伴随着热流底辟体的发育,形成了异于常压盆地的油气输导体系,由地层深部压力释放形成的底辟和裂缝是莺-琼盆地天然气运移的主要输导通道。研究利用沿层三维地震相干分析及曲率分析技术对莺-琼盆地高压底辟型和裂缝型输导体系进行了系统的识别,研究其空间展布特征及演化过程,结合天然气同位素及包裹体等地球化学手段,综合分析了高压成因输导体系与研究区天然气充注、散失及富集成藏的关系。研究结果表明,底辟型和裂缝型输导体系在空间分布上具有由深向浅阶梯状发育的特点,其中底辟型输导体系通常发育在莺歌海盆地的中央坳陷带,裂缝型输导体系主要分布在盆地热流底辟的边缘、斜坡近凹区的高压地层中。底辟型输导体系的发育演化历史可以划分为增压期、穿刺期、平衡期、释放期和塌陷期五个阶段(类型),具有增压期深部充气、穿刺期浅层成藏、平衡期复合成藏、释放期翼部成藏、塌陷期破坏成藏的成藏规律。裂隙型输导体系具有高压和构造两种成因,天然气具有浅部早、深部晚的成藏规律。

关键词：高温高压裂缝输导体系底辟莺-琼盆地

北部湾盆地乌石凹陷断坳转换期不整合结构特征及其成藏作用

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大地构造与成矿学 2022年第2期46卷 272-281页

作者：吴孔友李彦颖范彩伟董方洪梅中国石油大学(华东)地球科学与技术学院山东青岛266580 中海石油(中国)有限公司湛江分公司广东湛江524057

北部湾盆地T60不整合是古近系与新近系的分界,且形成于盆地由断陷进入坳陷的转换阶段。本文通过地震资料精细解析,揭示位于盆地中部的乌石凹陷在该时期(T60)不整合发育明显,且剖面类型多样。依据不整合上、下地震反射特征,可划分为平行... 详细信息

北部湾盆地T60不整合是古近系与新近系的分界,且形成于盆地由断陷进入坳陷的转换阶段。本文通过地震资料精细解析,揭示位于盆地中部的乌石凹陷在该时期(T60)不整合发育明显,且剖面类型多样。依据不整合上、下地震反射特征,可划分为平行‒削截不整合、超覆‒削截不整合、平行‒褶皱不整合等8种不整合类型,且在平面上削截类不整合的分布范围最广。研究表明不整合类型的平面分布规律受控于构造部位及变形强度。不整合在纵向上发育三层结构,并依据测井曲线响应特征建立了纵向结构的识别方法。利用该识别方法,乌石凹陷新近系下洋组底部(T60)不整合纵向结构发育,多条曲线在不整合结构上、下层与中层之间出现台阶式突变,且中层是多条变化幅度差曲线的低值区。同时,对不整合结构中层风化黏土层重点分析,揭示其平面发育规律主要受控于不整合剖面类型及剥蚀厚度这两大要素。依据乌石凹陷东区不整合成藏条件及成藏模式,叠合不整合剖面类型、风化黏土层厚度、烃源岩厚度等因素,针对乌石凹陷东区,优选出2个地层圈闭有利勘探区带,为下一步勘探部署提供了方向。

关键词：乌石凹陷断坳转换期不整合类型不整合结构地层圈闭