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东海盆地西湖凹陷平湖斜坡K构造带油气沿断层走向运聚模式及控制因素

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天然气地球科学 2024年第3期35卷 393-404页

作者：郭刚苏圣民徐建永刘志峰廖计华张晓庆中海油研究总院有限责任公司北京100028

东海盆地西湖凹陷平湖斜坡K构造带油气资源丰富,油气运聚过程复杂,研究油气沿断层走向运聚模式及控制因素,可以为相似区带油气勘探提供理论依据。为此,综合利用天然气组分和碳同位素等分析测试数据,研究K构造带天然气成因及运移路径,总... 详细信息

东海盆地西湖凹陷平湖斜坡K构造带油气资源丰富,油气运聚过程复杂,研究油气沿断层走向运聚模式及控制因素,可以为相似区带油气勘探提供理论依据。为此,综合利用天然气组分和碳同位素等分析测试数据,研究K构造带天然气成因及运移路径,总结油气沿断层走向运移聚集模式,明确油气可以沿断层走向运移的影响因素。结果表明:K构造带天然气以煤型气为主,等效RO值高于本地烃源岩,以东部洼陷烃源岩供烃为主;运移路径示踪参数变化趋势指示研究区主要存在3个天然气运移方向,均为沿断层走向运移。油气具有“破碎带垂向运移、破碎带—砂体走向运移、断层—盖层封堵、构造高点圈闭聚集”的运聚模式。油气可以沿断层走向长距离运移的条件为具有断裂带和砂体输导通道及断层具有好的垂向和侧向封闭性。研究区发育宽度较大的断裂带,破碎带物性好,为油气垂向和走向运移通道。平湖组砂体具有厚度大、连通性高、物性好的特征,为油气走向运移的有利输导层;平湖组盖层封盖石油和天然气的断接厚度下限值分别为6 m和10 m。主干断层附近盖层的断接厚度均大于10 m,垂向封闭性好,油气难以突破盖层向上部层系逸散;主干断层不同位置和深度的SGR值为32.1%~91.1%,高于封堵油气下限值(30%),侧向封闭性好,油气难以穿断运移。

关键词：平湖斜坡走向运移油气运移路径运聚模式控制因素

椒江凹陷下古新统月桂峰组半深湖--深湖相烃源岩综合识别与分布预测

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海洋地质与第四纪地质 2024年第2期44卷 199-209页

作者：郭刚廖计华徐建永吴斌李林致王欣李峰李婧婧中海油研究总院有限责任公司北京100028

椒江凹陷是东海盆地已证实生烃但未获商业发现的低勘探程度区,落实其主力烃源岩层月桂峰组半深湖—深湖相烃源岩发育情况及规模是下步油气勘探亟待解决的首要问题。基于新采集的三维地震、钻井、古生物及有机地球化学数据,综合断陷作用... 详细信息

椒江凹陷是东海盆地已证实生烃但未获商业发现的低勘探程度区,落实其主力烃源岩层月桂峰组半深湖—深湖相烃源岩发育情况及规模是下步油气勘探亟待解决的首要问题。基于新采集的三维地震、钻井、古生物及有机地球化学数据,综合断陷作用、古地貌背景、物源区母岩岩性、有机质丰度和类型等四方面开展椒江东洼月桂峰组湖相优质烃源岩精细识别,并通过地震相类比分析,定量预测其平面分布及规模。结果表明:强烈断陷作用、适度遮挡的古地貌背景、洼陷周缘火成岩母岩区共同控制了椒江东洼月桂峰组半深湖—深湖相烃源岩的发育;其整体为好—优质烃源岩,以Ⅱ1-Ⅱ2型干酪根为主,有机质来源以低等水生生物为主且有陆生高等植物的贡献。受凹陷结构控制,椒江东洼月桂峰组半深湖—深湖相烃源岩主要发育在洼陷中心及陡坡带一侧。典型地震相表现为低频连续强振幅平行反射,基于多属性神经网络深度学习技术,预测椒江东洼月桂峰组半深湖—深湖相烃源岩最大面积为294 km^(2)、总体积为109 km^(3)。综合认为,椒江东洼具有良好的油气资源潜力与勘探前景。

关键词：湖相烃源岩发育条件分布预测月桂峰组椒江凹陷东海盆地

丽水-椒江凹陷月桂峰组湖相烃源岩的主控因素与分布预测

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海洋地质前沿 2024年第4期40卷 9-17页

作者：李林致郭刚廖计华王欣李婧婧吴斌张晓庆中海油研究总院有限责任公司北京100028

月桂峰组是丽水-椒江凹陷的主力烃源岩层系。丽水-椒江凹陷在月桂峰组沉积时期为强断陷期,构造分割性强,沉积环境相对封闭,内部多个次洼的湖相烃源岩发育特征不清。为明确丽水-椒江凹陷内各富烃次洼中月桂峰组烃源岩发育条件及空间展布... 详细信息

月桂峰组是丽水-椒江凹陷的主力烃源岩层系。丽水-椒江凹陷在月桂峰组沉积时期为强断陷期,构造分割性强,沉积环境相对封闭,内部多个次洼的湖相烃源岩发育特征不清。为明确丽水-椒江凹陷内各富烃次洼中月桂峰组烃源岩发育条件及空间展布规律,进一步指导该区的油气勘探,利用钻井、岩芯、地球物理、地球化学及古生物等资料,基于湖盆演化动态全生命周期过程,提出“早期断层活动速率、中期母岩性质和遮挡条件、晚期火山活动”联合控制丽水-椒江凹陷4个次洼优质烃源岩的发育。在地质认识约束下,基于多属性神经网络深度学习,对中-深湖相烃源岩的空间展布进行了定量刻画。结合优质烃源岩的发育机制和中-深湖相烃源岩分布范围,对4个主要次洼内烃源岩的发育情况进行综合评价。结果表明,椒江A洼为Ⅰ类富烃次洼,丽水A洼和丽水C洼为Ⅱ类次富烃次洼,丽水B洼为Ⅲ类生烃次洼。

关键词：丽水-椒江凹陷月桂峰组烃源岩控制因素综合评价

Dissolution mechanism of a deep-buried sandstone reservoir in a deep water area:A case study from Baiyun Sag,Zhujiang River(Pearl River)Mouth Basin

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Acta Oceanologica Sinica 2023年第3期42卷 151-166页

作者： jihua liao Keqiang Wu Lianqiao Xiong Jingzhou Zhao Xin Li Chunyu Zhang China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China Hainan Branch of China National Offshore Oil Corporation(CNOOC)Co. Ltd.Haikou 570311China School of Earth Sciences and Engineering Xi’an Shiyou University Xi’an Petroleum UniversityXi’an 710065China

Dissolution mechanism and favorable reservoir distribution prediction are the key problems restricting oil and gas exploration in deep-buried *** this paper,the Enping Formation and Zhuhai Formation in Baiyun Sag of South China Sea was taken as a *** on the thin section,scanning electron microscopy,X-ray diffraction,porosity/permeability measurement,and mercury injection,influencing factors of dissolution were examined,and a dissolution model was ***,high-quality reservoirs were predicted temporally and *** results show that dissolved pores constituted the main space of the Paleogene sandstone *** primarily occurred in the coarse-and medium-grained sandstones in the subaerial and subaqueous distributary channels,while dissolution was limited in fine-grained sandstones and inequigranular *** main dissolved minerals were feldspar,tuffaceous matrix,and diagenetic *** of feldspar and illitization of kaolinite are the main dissolution pathways,but they occur at various depths and temperatures with different geothermal *** is controlled by four factors,in terms of depositional facies,source rock evolution,overpressure,and fault activities,which co-acted at the period of 23.8–13.8 Ma,and resulted into strong ***,based on these factors,high-quality reservoirs of the Enping and Zhuhai formations are predicted in the northern slope,southwestern step zone,and Liuhua uplift in the Baiyun Sag.

关键词： dissolution mechanism deep-buried reservoir diagenesis evolution reservoir prediction deep water region Baiyun Sag

Sedimentary Characteristics and Model of Gravity Flow Depositional System for the First Member of Upper Miocene Huangliu Formation in Dongfang Area, Yinggehai Basin, Northwestern South China Sea

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Journal of Earth Science 2014年第3期25卷 506-518页

作者： Ming Sun Hua Wang jihua liao Huajun Gan Jun Xiao Jinfeng Ren Shu'e Zhao Key Laboratory of Tectonics and Petroleum Resources Ministry of Education China University of Geosciences Guangzhou Marine Geological Survey Faculty of Earth Resources China University of Geosciences CNOOC Research Institute

The gravity flow deposit were mainly developed in the lowstand systems tract（LST） of the first member of Upper Miocene Huangliu Formation（Ehl1） in Dongfang area, Yinggehai Basin, has become a valuable target for gas exploration and production. The gravity flow sedimentary characteristics of lithofacies associations, sedimentary texture, seismic facies and logging facies were described in detail on the basis of integrated analysis of cores, logging and seismic data. The sedimentary microfacies types composed of neritic sandbar, continental shelf mud, main channel, bifurcated or cross-cutting distributary channel, overspill, and natural levee are revealed under the constraint of high resolution sequence stratigraphic framework in the Ehl1. The gravity flow deposit system in the LST is divided into three evolution stages corresponding to periods of three parasequence sets. The gravity flow deposit was induced in the early LST, expanded rapidly in the middle LST and decreased slightly in the late LST. But its developing scale decreased sharply in the transgression systems tract（TST） and finally vanished in the highstand systems tract（HST）. This spatial evolution rule is constrained by the integrated function of sediments supply of the Vietnam Blue River in the LST, the development of local gradient change in sea floor（micro-topography, i.e., flexure slope break）, and the fall in relative sea level. On the basics of the deep study of the coupling relationship among the three main control factors, the sedimentary model is established as an optimal component of ＂source-channel-sink＂ for shallow marine turbidite submarine fan.

关键词： Yinggehai Basin Dongfang area the first member of Upper Miocene Huangliu Formation(Ehl1) sedimentation characteristics gravity flow sedimentary model.

Distribution Prediction of Middle-deep Lacustrine Source Rocks in Eocene Wenchang Formation in the Kaiping Sag,Pearl Mouth Basin

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Acta Geologica Sinica(English Edition) 2021年第1期95卷 248-258页

作者： XIONG Lianqiao XIE Xiaojun ZHAO Zhao ZHANG Chunyu WANG Long liao jihua CAI Lulu XU Wei CNOOC Research Institute Co. Ltd.Beijing 100028China

Oil and gas shows are rich in drilling wells in Kaiping sag,however,large oilfield was still not found in this *** a long time,it is thought that source rocks were developed in the middle-deep lacustrine facies in the Eocene Wenchang Formation,while there is no source rocks that in middle-deep lacustrine facies have been found in *** of Wenchang Formation is big and reservoirs with good properties could be found in this *** and scale of source rock are significant for further direction of petroleum *** characterization of middle-deep lacustrine facies is the base for source rock *** on the sedimentary background,fault activity rate,seismic response features,and seismic attributes were *** limited classification method and multi-attributes neural network deep learning method were used for predicting of source rock distribution in Wenchang *** is found that during the deposition of lower Wenchang Formation,activity rate of main fault controlling the sub sag sedimentation was bigger than 100 m/Ma,which formed development background for middle-deep lacustrine *** with the seismic response of middle-deep lacustrine source rocks developed in Zhu I depression,those in Kaiping sag are characterized in low frequency and good *** RGB frequency decomposition,areas with low frequency are main distribution parts for middle-deep lacustrine *** frequency,instantaneous frequency,and coherency attributes of seismic could be used in no limited classification method for further identification of middle-deep lacustrine *** on the limitation of geology knowledge,multi-attributes of seismic were analyzed through neural network deep learning *** of middle-deep lacustrine facies in the fourth member of Wenchang Formation is oriented from west to east and is the *** of the middle-deep lacustrine facies in that member is 154 km^(2)and

关键词： neural network seismic classification middle-deep lacustrine facies Eocene Wenchang Formation Kaiping sag

珠江口盆地白云凹陷深层储层特征与有效储层控制因素

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地球科学 2022年第7期47卷 2454-2467页

作者：廖计华吴克强耳闯中海油研究总院有限责任公司北京100028 西安石油大学地球科学与工程学院陕西西安710065

珠江口盆地白云凹陷珠海组和恩平组是该区深层油气勘探的主要层系,查明深层储层基本特征和有效储层控制因素对于白云凹陷深层油气勘探具有重要意义.基于岩石学和矿物学、成岩作用、孔隙特征及沉积相分析,明确了白云凹陷深层储层基本特征... 详细信息

珠江口盆地白云凹陷珠海组和恩平组是该区深层油气勘探的主要层系,查明深层储层基本特征和有效储层控制因素对于白云凹陷深层油气勘探具有重要意义.基于岩石学和矿物学、成岩作用、孔隙特征及沉积相分析,明确了白云凹陷深层储层基本特征.白云凹陷深层以低孔低渗和致密储层为主;压实作用是造成深层储层变差的主要原因,碳酸盐胶结和石英次生加大是主要的自生矿物;孔隙类型以粒间溶孔和粒内溶孔为主;有效储层以低孔低渗及以上储层为主,孔隙度总体保持在10%左右,渗透率变化范围大.中粗粒沉积相带、溶蚀作用和超压是深层有效储层的主要控制因素.中粗粒砂岩具有较好的原生孔和次生孔发育条件,渗透率较高,胶结减孔作用弱,溶蚀增孔作用强;溶蚀作用是深层关键的建设性成岩作用,溶蚀孔隙是深层主要的孔隙类型;超压传导作用有利于酸性流体活动和溶蚀物质的迁移,对形成溶蚀孔隙具有积极意义;分流河道和水下分流河道砂体是中粗粒砂岩的主要载体,应作为深层油气勘探的优选对象.

关键词：深层储层中粗粒相带溶蚀作用超压白云凹陷石油地质学

浅海背景下大型浊积扇研究进展及堆积机制探讨:以莺歌海盆地黄流组重力流为例

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地学前缘 2015年第1期22卷 21-34页

作者：王华陈思甘华军廖计华孙鸣中国地质大学(武汉)构造与油气资源教育部重点实验室湖北武汉430074 中国海洋石油研究总院北京100027

围绕浅海背景下大型浊积扇的研究进展展开探讨,并以莺歌海盆地黄流组重力流为例研究其沉积特征及堆积机制。位于莺歌海盆地中央的东方区黄流组发育的大型高效储集体——浅海重力流沉积体的沉积特征和堆积机制具有其独特性。古生物研究表... 详细信息

围绕浅海背景下大型浊积扇的研究进展展开探讨,并以莺歌海盆地黄流组重力流为例研究其沉积特征及堆积机制。位于莺歌海盆地中央的东方区黄流组发育的大型高效储集体——浅海重力流沉积体的沉积特征和堆积机制具有其独特性。古生物研究表明,其沉积期的古水深为40~110m,属于陆架浅水沉积背景。其重力流特征表现为包卷变形层理、准同生变形构造等,主要发育鲍玛序列A段和AB段组合,缺失CDE段。对该重力流沉积体的初步研究表明,其具有大规模、多期次（浊积事件的垂向叠加序列组合）、持续性发育等特征。在浅海背景下形成大规模重力流沉积体的综合成因机制包括：（1）物源的持续供给;（2）同沉积期大规模海退作用;（3）陆架基底的幕式动态活动和差异性沉降。该重力流沉积体的发育受上述三大因素的联合控制。因此,本研究采取构造-层序地层学、沉积学与地球物理相结合的系列技术与方法研究其宏观、微观特征及堆积的控制要素与独特机制。该研究成果能丰富浅海区发育大型重力流沉积体的理论体系,对油气勘探新领域的拓展具重要的借鉴价值。

关键词：莺歌海盆地黄流组浅海相重力流沉积体(浊积扇) 堆积机制

中国近海古近纪碎屑岩储层特征与溶蚀作用规律

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地球科学 2023年第2期48卷 385-397页

作者：吴克强谢晓军廖计华韩雅坤中海油研究总院有限责任公司北京100028

随着中国近海浅层(新近系为主)勘探程度日益增加,中深层(古近系为主)特别是始新统和渐新统是未来油气勘探的重要领域之一.然而,针对中国近海中深层碎屑岩储层特征及溶蚀作用规律尚缺乏系统研究.基于大量新钻井、物性数据及多种分析测试... 详细信息

随着中国近海浅层(新近系为主)勘探程度日益增加,中深层(古近系为主)特别是始新统和渐新统是未来油气勘探的重要领域之一.然而,针对中国近海中深层碎屑岩储层特征及溶蚀作用规律尚缺乏系统研究.基于大量新钻井、物性数据及多种分析测试等,以辽中凹陷、西湖凹陷和白云凹陷为靶区,系统阐明了中国近海古近纪碎屑岩储层岩石学特征、物性及孔隙类型,分析并总结了其溶蚀作用规律.研究表明:中国近海古近纪砂岩储层岩石类型以长石岩屑砂岩或岩屑长石砂岩为主,同一凹陷不同构造的岩性差异明显,不同层位石英、岩屑含量略有变化;储层物性主体为中低孔-低渗,中-高孔渗储层主要发育在辽中凹陷沙一-二段和白云凹陷珠海组上段;孔隙类型均以次生孔隙为主,原生孔隙仅在西湖凹陷平湖斜坡北侧、辽中凹陷沙四段和白云凹陷珠海组上段较为发育.溶蚀作用整体以酸性流体对长石、连生方解石和部分岩屑的溶蚀为主.辽中凹陷不同构造溶蚀作用差异明显,受浅埋深火山岩母岩与中深层刚性母岩控制的砂岩储层溶蚀作用显著,而西湖凹陷西斜坡平湖组一段-平湖组三段则为早期连生方解石溶蚀,白云凹陷溶蚀作用主要为长石的高岭石化和高岭石的伊利石化.研究旨在为中国近海古近纪碎屑岩储层勘探开发提供借鉴.

关键词：中国近海古近纪碎屑岩储层特征溶蚀作用深层勘探石油地质