江陵凹陷断裂系统复杂,断层封闭性评价难度极大,断裂封闭性能及其组合特征、影响因素为江陵凹陷后期勘探部署带来挑战。利用江陵凹陷现有资料和前期研究成果,运用地质学原理,系统分析了江陵凹陷的构造特征和断层的演化历史,划分了主要断层系统,并在江陵凹陷断层侧向封闭性研究的基础上,分析了断层封闭机理,建立了江陵凹陷断层封闭模式。结果表明:低渗透带断层能够形成封闭,断层封闭机理为断裂带与围岩之间存在差异性的渗透能力;影响断层封闭性的因素包括储层岩性对接和泥岩涂抹率、岩石性质、断层附近渗透率等。在对江陵凹陷断层的封闭性综合分析的基础上,在江陵凹陷陵72井以南部署1口探井,打开了江陵凹陷勘探新局面。研究成果对断裂在油气成藏的作用及其封闭特征研究提供了理论依据,对同类油田的勘探部署具有借鉴意义。
The complex fracture system in Jiangling Sag makes fault trapping evaluation extremely difficult, and the fault trapping performance and its combination characteristics and influencing factors bring challenges to the later exploration deployment in Jiangling Sag. According to the existing data and previous research results of Jiangling Sag and the principles of geology, the tectonic characteristics of Jiangling Sag and the evolution history of the faults were systematically analyzed, and the main fault systems were classified, the fault trapping mechanism was analyzed on the basis of studies on lateral fault trap, Jiangling Sag, and a fault trap mode of Jiangling Sag was established. The results showed that, the faults in the low-permeability zone could be trapped due to the different permeability between the fault zone and the surrounding rock, and the factors affecting fault trap included lithology joint, mudstone coating rate, rock properties, and permeability near the fault. Based on the comprehensive analysis of the fault trap in Jiangling Sag, a prospecting well was selected to the south of Well Ling 72, Jiangling Sag to making a new start for exploration in Jiangling Sag. The study results provide a theoretical basis for the role of faults in hydrocarbon accumulation and their trap characteristics, and can be used as a reference for the exploration and deployment of similar oilfields.
[1] 王生奥,韩复兴,孙章庆,等.地应力测量及其对油气运移和断层封堵性影响的发展现状与趋势[J].地球物理学进展,2021,36(2):675-688.
WANG Sheng'ao,HAN Fuxing,SUN Zhangqing,et al.Present situation and the development trend of in-situ stress measurement and its effect on hydrocarbon migration and fault block[J].Progress in Geophysics,2021,36(2):675-688.
[2] 杨超群,雷永昌,邱欣卫,等.珠江口盆地陆丰凹陷A油田断层封堵性综合评价[J].海洋地质前沿,2021,37(2):54-61.
YANG Chaoqun,LEI Yongchang,QIU Xinwei,et al.An integrated assessment of fault sealing for Oilfield A in Lufeng Sag of Pearl River Mouth Basin[J].Marine Geology Frontiers,2021,37(2):54-61.
[3] 徐春华.顺向断块断层及地层倾角与断层启闭性的关系——以济阳坳陷勘探实践为例[J].断块油气田,2020,27(6):729-733.
XU Chunhua.Relationship between fault opening-closing and dip angles of fault and stratum in forward fault block:taking exploration practice of Jiyang Depression as an example[J].Fault-Block Oil & Gas Field,2020,27(6):729-733.
[4] 晏安语.济阳坳陷埕岛地区下古生界潜山断裂特征及控藏作用[J].科学技术与工程,2020,20(15):6011-6017.
YAN Anyu.Characteristics and control of faults on reservoir of lower Paleozoic buried hill in Chengdao Area,Jiyang Depression[J].Science Technology and Engineering,2020,20(15):6011-6017.
[5] 王志伟.新北油田右旋走滑应力场内断层封堵性及其对成藏的控制作用[J].地质科技情报,2019,38(4):145-152.
WANG Zhiwei.Analysis of fault sealing in the right hand strike-slip stress field of the Xinbei Oilfield and its controlling effect on the reservoir[J].Geological Science and Technology Information,2019,38(4):145-152.
[6] 赵孟军,王招明,张水昌,等.库车前陆盆地天然气成藏过程及聚集特征[J].地质学报,2005,79(3):414-422.
ZHAO Mengjun,WANG Zhaoming,ZHANG Shuichang,et al.Accumulation and features of natural gas in the Kuqa Foreland Basin[J].Acta Geologica Sinica,2005,79(3):414-422.
[7] 罗群,庞雄奇,姜振学.一种有效追踪油气运移轨迹的新方法——断面优势运移通道的提出及其应用[J].地质论评,2005,51(2):156-162.
LUO Qun,PANG Xiongqi,JIANG Zhenxue.A new method for effective trace petroleum migration path-concept of fault section dominant migrating channel and its application[J].Geological Review,2005,51(2):156-162.
[8] 周波,罗晓容,Didier Loggia,等.单个裂隙中油运移实验及特征分析[J].地质学报,2006,80(3):454-458.
ZHOU Bo,LUO Xiaorong,LOGGIA Didier,et al.Experiments and characterization of oil migration in a single fracture[J].Acta Geologica Sinica,2006,80(3):454-458.
[9] 宋岩,夏新宇,王震亮,等.天然气运移和聚集动力的耦合作用[J].科学通报,2001,46(22):1906-1910.
SONG Yan,XIA Xinyu,WANG Zhenliang,et al.The coupling of natural gas transport and aggregation dynamics[J].Chinese Science Bulletin,2001,46(22):1906-1910.
[10] 柳广弟,李剑,李景明,等.天然气成藏过程有效性的控制因素与评价方法[J].天然气地球科学,2005,16(1):1-6.
LIU Guangdi,LI Jian,LI Jingming,et al.The controls and the assessment method for the effectiveness of natural gas migration and accumulation process[J].Natural Gas Geoscience,2005,16(1):1-6.
[11] 付广,孙永河,吕延防.输导通道类型对天然气聚集效率的影响[J].地质论评,2006,52(2):236-243.
FU Guang,SUN Yonghe,LYU Yanfang.Influence of transporting pathway on gas accumulation efficiency[J].Geological Review,2006,52(2):236-243.
[12] COX S F.Faulting progresses at high fluid pressures:an example of fault valve behavior from the Wattle Gully Fault,Victoria,Australia[J].Journal of Geophysical Research,1995,100(B7),841-857.
[13] 姜振学,庞雄奇,曾溅辉,等.油气优势运移通道的类型及其物理模拟实验研究[J].地学前缘,2005,12(4):507-516.
JIANG Zhenxue,PANG Xiongqi,ZENG Jianhui,et al.Research on types of the dominant migration pathways and their physical simulation experiments[J].Earth Science Frontiers,2005,12(4):507-516.
[14] 吴胜和,曾溅辉,林双运,等.层间干扰与油气差异充注[J].石油实验地质,2003,25(3):285-289.
WU Shenghe,ZENG Jianhui,LIN Shuangyun,et al.Interlayer interference and differential injection of hydrocarbon into a trap[J].Petroleum Geology & Experiment,2003,25(3):285-289.
[15] CONSTANTIN J,PEYAUD B,VERGÉLY P,et al.Evolution of the structural fault permeability in argillaceous rocks in a polyphased tectonic context[J].Physics and Chemistry of the Earth,2004,29(1):25-41.
[16] 杨巍然,怅文推.断裂性质与流体包裹体组合特征[J].地球科学,1996,21(3):285-290.
YANG Weiran,CHANG Wentui.Character of fault property and combination of fluid inclusions[J].Journal of Earth Science,1996,21(3):285-290.
[17] 沈传波,李祥权,杜学斌.流体包裹体在油田断裂研究中的某些应用[J].大庆石油地质与开发,2003,22(4):4-6.
SHEN Chuanbo,LI Xiangquan,DU Xuebin.Some aoolication of fluid inclusions to study of fault oilfield[J].Petroleum Geology & Oilfield Development in Daqing,2003,22(4):4-6.
[18] 张义杰.准噶尔盆地断裂控油的流体地球化学证据[J].新疆石油地质,2003,24(2):100-106.
ZHANG Yijie.The proof of fluid geochemistry for the controlling of fault on oil in Junggar Basin.[J].Xinjiang Petroleum Geology,2003,24(2):100-106.
[19] 刘哲,吕延防,付晓飞,等.贝尔凹陷断层侧向封闭能力定量研究[J].吉林大学学报,2012,42(2):353-360.
LIU Zhe,LYU Yanfang,FU Xiaofei,et al.Quantitative research on lateral seal ability of faults in Beier Sag[J].Journal of Jilin University,2012,42(2):353-360.
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