Fault-caprock configuration and relationship with longitudinal distribution of hydrocarbons in the south-central section of the Eastern Sag in the Liaohe Basin

doi:10.3969/j.issn.1006-6535.2025.01.009

Abstract

Abstract: In response to the unclear impact of fault-caprock configuration sealing capacity on the longitudinal distribution of hydrocarbons in the central-southern segment of the Eastern Sag of Liaohe Basin, this study investigated the characteristics of the longitudinal distribution of hydrocarbons by utilizing the well-to-seismic and geological data, and evaluated the sealing capacity of fault-caprock configuration by employing the entropy weight method combined with TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) to reduce subjectivity in weight determination. The study shows that: the types of hydrocarbon enrichment in the study area can be divided into three categories: deep enrichment type, shallow enrichment type, and multi-layer enrichment type. Fault-caprock configurations can be divided into type I with good sealing capacity and type II with poor sealing capacity.Type I fault-caprock configuration in Member 3, Shahejie Formation is distributed in the central segment for controlling the deep enrichment of hydrocarbons. The combination of type I and type II fault-caprock configurations between the Member 3, Shahejie Formation and the Dongying Formation controls the multi-layer enrichment and shallow enrichment of hydrocarbons. The results of this study provide reference significance for the next steps in oil and gas exploration.

Key words: longitudinal distribution of hydrocarbons, sealing capacity, fault-caprock configuration, Eastern Sag of Liaohe Basin

CLC Number:

TE122

LI Hongyan, HAN Hongwei, JIANG Youlu, SHEN Che, GUO Qiang. Fault-caprock configuration and relationship with longitudinal distribution of hydrocarbons in the south-central section of the Eastern Sag in the Liaohe Basin[J]. Special Oil & Gas Reservoirs, 2025, 32(1): 79-87.

References

[1] 蒋有录,刘佳,苏圣民,等.渤海湾盆地潜山油气藏保存条件探讨[J].中国石油大学学报(自然科学版),2022,46(4):1-11.
JIANG Youlu,LIU Jia,SU Shengmin,et al.Study on hydrocarbon preservation conditions of buried hill reservoirs in Bohai Bay Basin[J].Journal of China University of Petroleum(Edition of Natural Sciences),2022,46(4):1-11.
[2] 付广,邓春,于桐,等.断盖配置封闭性组合形成的多层油气运聚有利部位预测方法[J].中国石油大学学报(自然科学版),2022,46(6):80-88.
FU Guang,DENG Chun,YU Tong,et al.Prediction method of favorable positions for oil and gas migration and accumulation in multi-layers formed by sealing combination of fault-caprock configuration[J].Journal of China University of Petroleum(Edition of Natural Sciences),2022,46(6):80-88.
[3] 肖雷.断裂输导形成上覆油气藏有利部位预测方法及其应用[J].特种油气藏,2023,30(1):22-28.
XIAO Lei.Method for predicting the favorable site of overlying oil and gas reservoir formed by fault conduit and its application[J].Special Oil & Gas Reservoirs,2023,30 (1):22-28.
[4] 岳刚,蒋有录,苏圣民,等.松辽盆地梨树断陷下白垩统泥岩盖层特征及封闭能力定量评价[J].大庆石油地质与开发,2023,42(5):18-26.
YUE Gang,JIANG Youlu,SU Shengmin,et al.Characteristics and quantitative evaluation of sealing capability of Lower Cretaceous mudstone caprock in Lishu Rift of Songliao Basin[J].Petroleum Geology & Oilfield Development in Daqing,2023,42(5):18-26.
[5] 蒋有录,苏圣民,赵凯.油源断层输导能力与非生烃层系油气富集的关系——以渤海湾盆地埕岛地区为例[J].石油学报,2022,43(8):1122-1131,1184.
JIANG Youlu,SU Shengmin,ZHAO Kai.Relationship between transporting ability of oil-source faults and hydrocarbon enrichment in non-hydrocarbon generating strata:a case study of Chengdao Area of Bohai Bay Basin[J].Acta Petrolei Sinica,2022,43(8):1122-1131,1184.
[6] 刘华,赵珊,梁书义,等.车镇凹陷斜坡带沙三段油气运聚与成藏模式[J].中国石油大学学报(自然科学版),2021,45(5):42-53.
LIU Hua,ZHAO Shan,LIANG Shuyi,et al.Hydrocarbon transportation system and reservoir forming model of Es₃ in slope belt of Chezhen Depression[J].Journal of China University of Petroleum(Edition of Natural Sciences),2021,45(5):42-53.
[7] 冯国良,孙万高,王一帆,等.井-震结合泥岩盖层分级评价在乍得D盆地的应用[J].新疆石油地质,2021,42(6):756-762.
FENG Guoliang,SUN Wangao,WANG Yifan,et al.Grading evaluation of mudstone caprocks based on logging-seismic combination:a case study on D Basin in Chad[J].Xinjiang Petroleum Geology,2021,42(6):756-762.
[8] WANG Fuwei,CHEN Dongxia,WANG Qiaochu,et al.Quantitative evaluation of caprock sealing controlled by fault activity and hydrocarbon accumulation response:K Gasfield in the Xihu Depression,East China Sea Basin[J].Marine and Petroleum Geology,2021,134:105352.
[9] 范彩伟,贾茹,柳波,等.莺歌海盆地中央坳陷带成藏体系的盖层评价及控藏作用[J].岩性油气藏,2023,35(1):36-48.
FAN Caiwei,JIA Ru,LIU Bo,et al.Caprock evaluation and its reservoir control of different accumulation systems in central depression zone of Yinggehai Basin[J].Lithologic Reservoirs,2023,35(1):36-48.
[10] ZHANG Jinli,YANG Zhuangyi,YANG Qing,et al.Pore water pressure model for sands reinforced with randomly distributed fibers based on cyclic triaxial tests[J].Soil Dynamics and Earthquake Engineering,2021,148:106812.
[11] 孙文英.基于源断盖空间配置的油气侧向分流运聚有利区预测方法及其应用[J].大庆石油地质与开发,2021,40(4):38-44.
SUN Wenying.Prediction methods of favorable area for laterally migrated and accumulated oil and gas based on source-fault-caprock spatial configuration and their application[J].Petroleum Geology & Oilfield Development in Daqing,2021,40(4): 38-44.
[12] 田钊.源断盖配置油气运聚有利部位预测方法及其应用[J].大庆石油地质与开发,2020,39(4):42-47.
TIAN Zhao.Predicting methods and its application for the favorable location of the hydro carbon migration and accumulation by the source-fault-caprock configuration[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(4): 42-47.
[13] 黄鹤,徐衍彬.油气穿过断盖配置散失部位的预测方法[J].特种油气藏,2018,25(5):19-23.
HUANG He,XU Yanbin.Loss prediction of hydrocarbon across fault-caprock configuration[J].Special Oil & Gas Reservoirs,2018,25(5):19-23.
[14] 刘云鑫,张金宝,于英华.油源断裂与区域性泥岩盖层配置渗漏时期预测方法及应用[J].海相油气地质,2023,28(3):330-336.
LIU Yunxin,ZHANG Jinbao,YU Yinghua.Prediction method and application of leakage period in oil source fracture-regional mudstone caprock configuration[J]. Marine Origin Petroleum Geology,2023,28(3):330-336.
[15] 付广,卢德根,梁木桂,等.断盖配置封闭油气时期预测方法及其应用[J].大庆石油地质与开发,2023,42(3):40-47.
FU Guang,LU Degen,LIANG Mugui,et al.Prediction method and its application for oil and gas sealing period in fault-caprock configuration[J].Petroleum Geology & Oilfield Development in Daqing,2023,42(3):40-47.
[16] 袁红旗,曹文瑞,于英华,等.断盖配置渗漏油气时期确定方法及其应用[J].地质论评,2021,67(2):420-428.
YUAN Hongqi,CAO Wenrui,YU Yinghua,et al.Determination method and application of leakage period for oil and gas of fault-caprock configuration[J].Geological Review,2021,67(2):420-428.
[17] 付广,董金梦,彭万涛.断盖配置渗漏与封闭转换时期的确定方法及其应用[J].沉积学报,2020,38(4):868-875.
FU Guang,DONG Jinmeng,PENG Wantao.Determination method and application for the conversion period of fault-caprock configuration leakage and sealing[J].Acta Sedimentologica Sinica,2020,38(4):868-875.
[18] 赵凯.埕岛地区新近系断裂控藏作用研究[D].青岛:中国石油大学(华东),2019.
ZHAO Kai.Research on controls on fault accumulations in Neogene in Chengdao Area[D].Qingdao:China University of Petroleum(East China),2019.
[19] 曹思佳,许凤鸣,孙显义,等.断裂致泥岩盖层封闭形成期滞后程度的预测方法及其应用[J].天然气工业,2021,41(6):37-43.
CAO Sijia,XU Fengming,SUN Xianyi,et al.A method for predicting the fault induced lag degree of seal formation time of mudstone cap rocks and its application[J].Natural Gas Industry,2021,41(6):37-43.
[20] LI Changzhi,XU Guosheng,XU Fanghao,et al.A model for faults to link the Neogene reservoirs to the Paleogene organic-rich sediments in low-relief regions of the south Bohai Sea,China[J].Journal of Petroleum Science and Engineering,2021,200: 108360.
[21] 李思伟,黄玉龙,冯玉辉,等.辽河盆地东部凹陷新生代伸展-走滑构造作用及断裂构造特征[J].地球物理学报,2020,63(2):612-626.
LI Siwei,HUANG Yulong,FENG Yuhui,et al.Cenozoic extension and strike-slip tectonics and fault structures in the Eastern Sag,Liaohe Depression[J].Chinese Journal of Geophysics,2020,63(2):612-626.
[22] 刘晓晶,谢庆宾,徐翔,等.辽河盆地东部凹陷古近系沙河街组层序地层及沉积相研究[J].东北石油大学学报,2015,39(6):1-11,13.
LIU Xiaojing,XIE Qingbin,XU Xiang,et al.Research on sequence stratigraphy and sedimentary facies of the Paleogene Shahejie Formation in the Eastern Sag,Liaohe Basin[J].Journal of Northeast Petroleum University,2015,39(6):1-11,13.
[23] 赵景蒲.辽河油田东部凹陷中南段古近系烃源岩地球化学特征研究[J].中国石油大学胜利学院学报,2020,34(3):11-14.
ZHAO Jingpu.Study on geochemical characteristics of hydrocarbon source rocks in the Paleogene of the central-southern section of the Eastern Sag,Liaohe Oilfield[J].Journal of Shengli College China University of Petroleum,2020,34(3): 11-14.
[24] 杨庆宁.辽河东部凹陷南部沙三段火山岩储层特征[J].中国石油和化工标准与质量,2018,38(24):121-124.
YANG Qingning.Characteristics of volcanic reservoirs in the Member 3,Shahejie Formation in the southern Eastern Sag of Liaohe Basin[J].China Petroleum and Chemical Standard and Quality,2018,38(24):121-124.
[25] 田涛.辽河坳陷地质结构与油气富集差异性研究[D].青岛:中国石油大学(华东),2012.
TIAN Tao.Research on heterogeneity of geological structure and hydrocarbon enrichment in the Liaohe Depression[D].Qingdao:China University of Petroleum(East China),2012.
[26] 胡英杰,蔡国钢,刘兴周,等.辽河坳陷东部滩海深层——超深层天然气勘探重大发现及意义[J].中国石油勘探,2023,28(2):24-34.
HU Yingjie,CAI Guogang,LIU Xingzhou,et al.Great discovery and significance of natural gas exploration in deep to ultra-deep formation in eastern tidal zone of Liaohe Depression[J].China Petroleum Exploration,2023,28(2):24-34.
[27] 黄盛华.辽河东部凹陷中南段主干断裂特征与石油地质条件研究[D].大庆:东北石油大学,2012.
HUANG Shenghua.Research on characteristics of major faults and petroleum geological conditions in the central-southern section of the Eastern Sag,Liaohe Basin[D].Daqing:Northeast Petroleum University,2012.