Special Oil & Gas Reservoirs >

2024 , Vol. 31 >Issue 5: 67 - 76

DOI: https://doi.org/10.3969/j.issn.1006-6535.2024.05.008

Geologic Exploration

The Relationship between Overpressure Systems and Hydrocarbon Accumulation in the Dongying Sag

  • Gao Zhiqiang
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  • SINOPEC Shengli Oilfield Company,Dongying,Shandong 257015,China

Received date: 2023-12-04

  Revised date: 2024-06-26

  Online published: 2024-12-24

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Abstract

The overpressure system plays a crucial role in the process of oil and gas migration and accumulation in Dongying Sag.Due to the lack of dynamic characterization of the overpressure system,this study investigates the pressure gradient characteristics and its control on oil and gas in a sequence of "point-line-surface".The research indicates that the areas with high and low gradient values overlap longitudinally.Planarly,the high gradient value in the lower part of the Fourth Member of Shahejie Formation is distributed in the northern deep sag and gradually diminishes from north to south.The high gradient value ranging from the upper part of the Fourth Member to the lower part of the Third Member of Shahejie Formation is distributed around each hydrocarbon generation sag.There exist five types of pressure gradient structures.The high pressure-low gradient zone is located at the center of the sag,followed outward by the high pressure-high gradient zone,the transition-high gradient zone,the transition-low gradient zone,and the normal pressure-low gradient zone.Source,reservoir and seal formations constitute the material basis,boundaries and structural types of the pressure gradient,with tectonic evolution controlling the vertical attenuation and spatial distribution of the pressure gradient.The oil and gas controlled by faults related to the pressure gradient are distributed in a ring-like pattern,and the related lithologic reservoirs are scattered.This study holds significant theoretical significance for rolling exploration and desert prediction in Dongying Sag.

Key words： Dongying Sag; overpressure; pressure gradient structure; controlling mechanism; oil and gas distribution

Cite this article

Gao Zhiqiang . The Relationship between Overpressure Systems and Hydrocarbon Accumulation in the Dongying Sag[J]. Special Oil & Gas Reservoirs, 2024 , 31(5) : 67 -76 . DOI: 10.3969/j.issn.1006-6535.2024.05.008

References

[1] 蒋有录,王鑫,于倩倩,等.渤海湾盆地含油气凹陷压力场特征及与油气富集关系[J].石油学报,2016,37(11):1361-1369.
JIANG Youlu,WANG Xin,YU Qianqian,et al.Pressure field characteristics of petroliferous depressions and its relationship with hydrocarbon enrichment in Bohai Bay Basin[J].Acta Petrolei Sinica,2016,37(11):1361-1369.
[2] 邱贻博.东营凹陷超压结构及控制因素[J].中国石油勘探,2018,23(3):28-34.
QIU Yibo.Overpressure structure in Dongying Sag and its controlling factors[J].China Petroleum Exploration,2018,23(3):28-34.
[3] 张守春,王学军,朱日房,等.一种预测异常高压发育范围的新方法:以东营凹陷为例[J].高校地质学报,2018,24(1):139-145.
ZHANG Shouchun,WANG Xuejun,ZHU Rifang,et al.A new method for predicting the development range of abnormal high pressure:a case study in the Dongying Sag[J].Geological Journal of China Universities,2018,24(1):139-145.
[4] 杨彬,张立宽,张立强,等.东营凹陷东南斜坡泥岩压实规律及超压分布[J].新疆石油地质,2015,36(6):714-718,723.
YANG Bin,ZHANG Likuan,ZHANG Liqiang,et al.Shale compaction and overpressure distribution in southeast slope of Dongying Sag,Bohai Bay Basin[J].Xinjiang Petroleum Geology,2015,36(6):714-718,723.
[5] 刘华,蒋子月,郝雪峰,等.渤南洼陷古近系古压力梯度与含油气性关系[J].地球科学,2020,45(2):547-558.
LIU Hua,JIANG Ziyue,HAO Xuefeng,et al.The relationship between the Paleo-pressure gradient and hydrocarbon containing of Paleogene Strata in the Bonan Sag[J].Earth Science,2020,45(2):547-558.
[6] 刘华,李君,冯月琳,等.渤海湾盆地渤南洼陷沙河街组三段剩余压力梯度与油气分布关系[J].石油与天然气地质,2020,41(5):1083-1091.
LIU Hua,LI Jun,FENG Yuelin,et al.Relationship between excess pressure gradient and hydrocarbon distribution in the 3rd Member of Shahejie Formation in Bonan Sag,Bohai Bay Basin[J].Oil & Gas Geology,2020,41(5):1083-1091.
[7] 李传亮,朱苏阳.再谈启动压力梯度[J].岩性油气藏,2013,25(4):1-5.
LI Chuanliang,ZHU Suyang.Another discussion on starting pressure gradient[J].Lithologic Reservoirs,2013,25(4):1-5.
[8] 郝雪峰.东营凹陷沙三—沙四段砂岩储层超压成因与演化[J].石油与天然气地质,2013,34(2):167-173.
HAO Xuefeng.Overpressure genesis and evolution of sandstone reservoirs in the 3rd and 4th Members of Shahejie Formation,the Dongying Depression[J].Oil & Gas Geology,2013,34(2):167-173.
[9] 邱贻博.东营凹陷压力系统与油气成藏[J].特种油气藏,2015,22(3):58-61,153.
QIU Yibo.Pressure system and oil/gas reservoir forming in Dongying Sag[J].Special Oil & Gas Reservoirs,2015,22(3):58-61,153.
[10] 邱贻博,王永诗,高永进,等.东营、沾化凹陷压力结构差异及其影响因素[J].西安石油大学学报(自然科学版),2017,32(4):24-31.
QIU Yibo,WANG Yongshi,GAO Yongjin,et al.Difference of pressure structure and its influencing factors in Dongying and Zhanhua Sags[J].Journal of Xi′an Shiyou University(Natural Science Edition),2017,32(4):24-31.
[11] 刘晖,操应长,姜在兴,等.渤海湾盆地东营凹陷沙河街组四段膏盐层及地层压力分布特征[J].石油与天然气地质,2009,30(3):287-293.
LIU Hui,CAO Yingchang,JIANG Zaixing,et al.Distribution characteristics of evaporates and formation pressure of the Fourth Member of the Shahejie Formation in the Dongying Sag,the Bohai Bay Basin[J].Oil & Gas Geology,2009,30(3):287-293.
[12] 张守春,张林晔,查明,等.东营凹陷压力系统发育对油气成藏的控制[J].石油勘探与开发,2010,38(3):289-296.
ZHANG Shouchun,ZHANG Linye,ZHA Ming,et al.Control of pressure system development on reservoir formation in the Dongying Sag,Shengli Oilfield,east China[J].Petroleum exploration and development,2010,38(3):289-296.
[13] 张天骄.牛庄洼陷超压顶封层及下部储层成岩作用与油气运聚[D].青岛:中国石油大学(华东),2023.
ZHANG Tianjiao.Diagenesis and hydrocarbon migration and accumulation of overpressured top seal and lower reservoir in Niuzhuang Subsag[D].Qingdao:China University of Petroleum(East China),2023.
[14] 徐涛玉,操应长,郭雪娇,等.东营凹陷古近系超高压成因及其特征[J].新疆石油地质,2009,30(5):585-587,602.
XU Taoyu,CAO Yingchang,GUO Xuejiao,et al.Overpressure genesis and differential characteristics of paleogene in Dongying Sag[J].Xinjiang Petroleum Geology,2009,30(5):585-587,602.
[15] 成铭.东营凹陷北带深层超压分布、演化及成藏效应[D].北京:中国石油大学(北京),2023.
CHENG Ming.Deep overpressure distribution,evolution and accumulation effect in the northern zone of Dongying Sag[D].Beijing:China University of Petroleum (Beijing),2023.
[16] 刘伟新,卢龙飞,叶德燎,等.川东南地区奥陶系五峰组—志留系龙马溪组页岩气异常压力封存箱剖析与形成机制[J].石油实验地质,2022,44(5):804-814.
LIU Weixin,LU Longfei,YE Deliao,et al.Significance and formation mechanism of abnormally pressured compartments of shale gas in the Ordovician Wufeng-Silurian Longmaxi Formations,southeastern Sichuan Basin[J].Petroleum Geology & Experiment,2022,44(5):804-814.
[17] 姜文亚,宋泽章,周立宏,等.渤海湾盆地歧口凹陷地层压力结构特征[J].吉林大学学报(地球科学版),2020,50(1):52-69.
JIANG Wenya,SONG Zezhang,ZHOU Lihong,et al.Characteristics of formation-pressure-structure of Qikou Sag,Bohai Bay Basin[J].Journal of Jilin University:Earth Science Edition,2020,50(1):52-69.
[18] 施兴华.东营凹陷古近系烃源岩非均质性特征及古生产力恢复[D].焦作:河南理工大学,2016.
SHI Xinghua.Heterogeneity characteristics and paleoproductivity recovery of Paleogene source rocks in Dongying Sag[D].Jiaozuo:Henan Polytechnic University,2016.
[19] 万文胜,杜军社,王国先.异常高压油藏油层内部压力梯度探讨[J].新疆石油天然气,2006,2(3):51-54,103-104.
WAN Wensheng,DU Junshe,WANG Guoxian.Research of pressure gradient for abnormal high pressure reservoirs[J].Xinjiang Oil & Gas,2006,2(3):51-54,103-104.
[20] LAO H,WANG Y,LI J,et al.Normal fault transmissibility characteristics under the transition condition of fault conduction and sealing observed in simulation experiments[J].Marine and Petroleum Geology,2022,143,105779.
[21] 唐亚楠.黄河口凹陷中洼断裂活动对油气运移及富集的影响[D].北京:中国地质大学(北京),2020.
TANG Ya'nan.The influence of fault activity on oil and gas migration and enrichment in the central sag of the Huanghekou Sag[D].Beijing:China University of Geosciences(Beijing),2020.
[22] 王永诗,邱贻博,茆书巍,等.济阳坳陷东营凹陷古近系隐蔽油气藏勘探实践及展望[J].中国海上油气,2023,35(3):12-24.
WANG Yongshi,QIU Yibo,MAO Shuwei,et al.Exploration practice and prospect of Paleogene subtle oil and gas reservoirs in Dongying Sag,Jiyang Depression[J].China Offshore Oil and Gas,2023,35(3):12-24.
[23] 周云秋,贺锡雷,林凯,等.基于动态有效应力系数的地层压力估算方法[J]. 新疆石油地质,2023,44(2):245-251.
ZHOU Yunqiu,HE Xilei,LIN Kai,et al.Formation pressure estimation method based on dynamic effective stress coefficient[J].Xinjiang Petroleum Geology,2023,44(2):245-251.
[24] 何玉,周星,李少轩,等.渤海湾盆地渤中凹陷古近系地层超压成因及测井响应特征[J].岩性油气藏,2022,34(3):60-69.
HE Yu,ZHOU Xing,LI Shaoxuan,et al.Genesis and logging response characteristics of formation overpressure of Paleogene in Bozhong Sag,Bohai Bay Basin[J].Lithologic Reservoirs,2022,34(3):60-69.
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