Abstract:In the exploration of faulted basins lacking wells,source rocks and their hydrocarbon generation potential should be determined first.However,due to the lack of drilling data in the Sag Wenchang B,conventional geochemical reservoir formation evaluation methods such as organic geochemistry,organic petrology,and reservoir geochemistry do not work.Therefore,we propose a petroleum accumulation seismic analysis method for the western part of the Pearl River Mouth Basin,which is hydrocarbon source-rock identification for under-explorated areas with very little drilling data.Combining theoretical research and exploration practice,this paper summarizes a new idea of petroleum accumulation seismology.Based on modern hydrocarbon reservoir formation theory,key factors of hydrocarbon accumulation in the study area are analyzed on seismic data.The process and modes of hydrocarbon reservoir formation are revealed,and the distribution of hydrocarbon reservoirs is accurately predicted.According to our research results,high-quality source rocks of middle-deep lacustrines in the Formation Wenchang have high abundance of organic matter (type Ⅰ to Ⅱ1).This great potential zone covers 110 km2 with NE-trending long strips parallel to the South Pearl River Fault,which becomes a new exploration zone in the Pearl River Basin.
周家雄, 胡高伟, 邓勇, 李辉, 徐涛, 周刚. 利用地震成藏学研究断陷湖盆油气成藏关键要素[J]. 石油地球物理勘探, 2019, 54(5): 1141-1150.
ZHOU Jiaxiong, HU Gaowei, DENG Yong, LI Hui, XU Tao, ZHOU Gang. A study of key factors of hydrocarbon accumulation in a faulted basin based on petroleum-accumulation seismology. Oil Geophysical Prospecting, 2019, 54(5): 1141-1150.
朱伟林,黎明碧,吴培康.珠江口盆地珠三坳陷石油体系[J].石油勘探与开发,1997,24(6):21-26.ZHU Weilin,LI Mingbi,WU Peikang.Petroleum system in Zhu Ⅲ depression of Pearl River Mouth Basin[J].Petroleum Exploration and Development,1997,24(6):21-26.
[2]
张迎朝.珠江口盆地西部南断裂带油气成藏特征与成藏模式[J].石油地球物理勘探,2012,47(5):786-794.ZHANG Yingzhao.Hydrocarbon pooling characteristics and pooling patterns in the south fault belt,West Pearl River Mouth basin[J].Oil Geophysical Prospecting,2012,47(5):786-794.
[3]
张迎朝,甘军,邓勇,等.珠江口盆地西部文昌B凹陷及周边油气成藏组合[J].中国海上油气,2009,21(5):303-307.ZHANG Yingzhao,GAN Jun,DENG Yong,et al.Hydrocarbon plays in Wenchang B sag and its surroun-ding ares,the western Pearl River Mouth basin[J].China Offshore Oil and Gas,2009,21(5):303-307.
[4]
李辉,陈胜红,张迎朝,等.珠江口盆地珠三坳陷断裂特征与油气成藏[J].海洋地质与第四纪地质,2014,34(4):115-124.LI Hui,CHEN Shenghong,ZHANG Yingzhao,et al.Faults in the Zhu-3 depression of Pearl River Mouth basin and their control over hydrocarbon accumulation[J].Marine Geology and Quarternary Geology,2014,34(4):115-124.
[5]
张迎朝,陈志宏,李绪深,等.珠江口盆地西部油气成藏组合和成藏模式[J].石油与天然气地质,2011,32(1):108-123.ZHANG Yingzhao,CHEN Zhihong,LI Xushen,et al.Hydrocarbon plays and pool-forming patterns in the western part of the Pearl River Mouth basin[J].Oil & Gas Geology,2011,32(1):108-123.
袁秉衡,孙廷举.论石油地震地质学[J].石油与天然气地质,1986,7(4):379-385.YUAN Bingheng,SUN Tingju.Discussion on petro-leum seismogeology[J].Oil & Gas Geology,1986,7(4):379-385.
[8]
杨杰,卫平生,李相博.石油地震地质学的基本概念、内容和研究方法[J].岩性油气藏,2010,22(1):1-6.YANG Jie,WEI Pingsheng,LI Xiangbo.Basic concept,content and research method of petroleum seismogeology[J].Lithologic Reserviors,2010,22(1):1-6.
[9]
罗群,黄捍东.地震成藏学的提出与应用[J].石油学报,2009,30(6):876-881.LUO Qun,HUANG Handong.Research on seismic-petroleum accumulation science and its application[J].Acta Petrolei Sinica,2009,30(6):876-881.
[10]
曹正林,石亚军,阎存凤,等.地震成藏学核心内容与技术方法体系探讨[J].地球物理学进展,2013,28(1):270-279.CAO Zhenglin,SHI Yajun,YAN Cunfeng,et al.Discussion about petroleum seismic accumulation key research contents and technical & method system[J].Progress in Geophysics,2013,28(1):270-279.
[11]
鲍园,罗群,王超勇,等.地震成藏学及其应用[J].地球物理学进展,2013,28(1):280-286.BAO Yuan,LUO Qun,WANG Chaoyong,et al.Seismic-petroleum accumulation science and its application[J].Progress in Geophysics,2013,28(1):280-286.
[12]
张寒,朱光有.利用地震和测井信息预测和评价烃源岩——以渤海湾盆地富油凹陷为例[J].石油勘探与开发,2007,34(1):55-59.ZHANG Han,ZHU Guangyou.Using seismic and log information to predict and evaluate hydrocarbon source rocks:an example from rich oil depression in Bohai bay[J].Petroleum Exploration and Development,2007,34(1):55-59.
[13]
刘震,常迈,赵阳,等.低勘探程度盆地烃源岩早期预测方法研究[J].地学前缘,2007,14(4):159-167.LIU Zhen,CHANG Mai,ZHAO Yang,et al.Method of early prediction on source rocks in basins with low exploration activity[J].Earth Science Frontiers,2007,14(4):159-167.
[14]
牛聪,刘志斌,王彦春,等.应用地球物理技术定量评价辽西凹陷沙河街组烃源岩[J].石油地球物理勘探,2017,52(1):131-137.NIU Cong,LIU Zhibin,WANG Yanchun,et al.Quantitative evaluation of Shahejie formation source rocks in Liaoxi Sag with geophysical approaches[J].Oil Geo-physical Prospecting,2017,52(1):131-137.
[15]
于建国,韩文功,于正军,等.济阳拗陷孔店组烃源岩的地震预测方法[J].石油地球物理勘探,2005,40(3):318-338.YU Jianguo,HAN Wengong,YU Zhengjun,et al.Seismic prediction of Kongdian Group source rock in Jiyang depression[J].Oil Geophysical Prospecting,2005,40(3):318-338.
[16]
田在艺,张庆春.中国含油气沉积盆地论[M].北京:石油工业出版社,1996.
[17]
张迎朝,陈志宏,李绪深,等.珠江口盆地文昌B凹陷及周边油气成藏特征与有利勘探领域[J].石油实验地质,2011,33(3):297-302.ZHANG Yingzhao,CHEN Zhihong,LI Xushen,et al.Petroleum accumulation characteristics and favorable exploration directions in Wenchang B Sag and its surrounding areas,Pearl River Mouth Basin[J].Petro-leum Geology & Experiment,2011,33(3):297-302.
[18]
于建国,韩文功,刘力辉.分频反演方法及应用[J].石油地球物理勘探,2006,41(2):193-197.YU Jianguo,HAN Wengong and LIU Lihui.Frequency divided inversion and application[J].Oil Geophysical Prospecting,2006,41(2):193-197.
[19]
金凤鸣,刘力辉,胡诚,等.地震岩性地貌在薄储层沉积微相研究中的应用[J].石油地球物理勘探,2017,52(1):173-180.JIN Fengming,LIU Lihui,HU Cheng,et al.Application of seismic lithologic geomorphy in thin-bed reservoir sedimentary microfacies study[J].Oil Geophysical Prospecting,2017,52(1):173-180.
[20]
李明,邹才能,刘晓,等.松辽盆地北部深层火山岩气藏识别与预测技术[J].石油地球物理勘探,2002,37(5):477-484.LI Ming,ZOU Caineng,LIU Xiao,et al.Identifying and predicting technology of deep volcanics gas reservoir in north of Songliao basin[J].Oil Geophysical Prospecting,2002,37(5):477-484.
[21]
顾礼敬,徐守余,苏劲,等.利用地震资料预测和评价烃源岩[J].天然气地球科学,2011,22(3):554-560.GU Lijing,XU Shouyu,SU Jin,et al.Muddy hydrocarbon source rock prediction and evaluation with seismic data[J].Natural Gas Geoscience,2011,22(3):554-560.
[22]
张迎朝,甘军,李辉,等.伸展构造背景下珠三坳陷南断裂走滑变形机制及其油气地质意义[J].中国海上油气,2013,25(5):9-15.ZHANG Yingzhao,GAN Jun,LI Hui,et al.Strike-slip deformation mechanism and its petroleum geology significance along south fault in Zhu Ⅲ depression under extensional tectonic setting[J].China Offshore Oil and Gas,2013,25(5):9-15.