Deformation and evolution of mud diapirs in Rio Del Rey Basin, Niger Delta

被引：0
|
作者：
Yu Y. [1 ,2 ]
Wang T. [1 ,2 ]
Chen Z. [3 ]
Su Y. [3 ]
Zhang J. [1 ,2 ]
Wu S. [3 ]
机构：
[1] State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing
[2] College of Geosciences, China University of Petroleum(Beijing), Beijing
[3] Research Institute of Petroleum Exploration and Development, SINOPEC, Beijing
来源：
Oil and Gas Geology | 2021年 / 42卷 / 06期
关键词：
Akata Formation; Fault; Mud diaper; Niger Delta; Rio Del Rey Basin;
D O I：
10.11743/ogg20210617
中图分类号：
学科分类号：
摘要：
Several mud diapir belts developed in the Akata Formation mudstone are closely linked to the accumulation of hydrocarbon in the Rio Del Rey Basin, northeast Niger delta. According to their heights and contact relationships to peripheral strata, the mud diapirs can be divided into complicated pierced and simple buried styles, with S-N trending elongations or scattering dots in a plane view. Influenced by mud diapirs, three kinds of normal faults have developed in the overburden. The evolution of mud diapirs experienced three stages: the deposition and weak activity stage before the middle Oligocene, intense rising stage during the late Oligocene and Miocene, and weak activity and buried stage after the Miocene. In addition to the influence exerted by gravitational sliding and differential loading induced from the overburden, the formation of mud diapirs are also subjected to some Atlantic transform faults in the southeast part of the Rio Del Rey Basin and basement faulting activities. The study is helpful to the analysis of the impact of these diapirs upon the development of traps and reservoirs as well as hydrocarbon migration in the basin. © 2021, OIL & GAS GEOLOGY Editorial Board. All right reserved.
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页码：1435 / 1439and1474
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