石油勘探与开发 >

2020 , Vol. 47 >Issue 6: 1174 - 1184

DOI: https://doi.org/10.11698/PED.2020.06.10

油气勘探

四川盆地绵竹-长宁克拉通内裂陷东侧震旦系灯影组四段台缘丘滩体成藏特征与勘探前景

  • 杨威 ,
  • 魏国齐 ,
  • 谢武仁 ,
  • 金惠 ,
  • 曾富英 ,
  • 苏楠 ,
  • 孙爱 ,
  • 马石玉 ,
  • 沈珏红 ,
  • 武赛军
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  • 中国石油勘探开发研究院,北京 100083
杨威（1971-）,男,湖北天门人,博士,中国石油勘探开发研究院教授级高级工程师,主要从事油气地质研究。地址：北京市海淀区学院路20号,中国石油勘探开发研究院石油天然气地质研究所,邮政编码：100083。E-mail: yangw69@petrochina.com.cn

收稿日期: 2020-01-08

  修回日期: 2020-07-30

  网络出版日期: 2020-11-27

基金资助

国家科技重大专项“大型油气田及煤层气开发”（2016ZX05007-002）

收起

Hydrocarbon accumulation and exploration prospect of mound-shoal complexes on the platform margin of the fourth member of Sinian Dengying Formation in the east of Mianzhu-Changning intracratonic rift, Sichuan Basin, SW China

  • YANG Wei ,
  • WEI Guoqi ,
  • XIE Wuren ,
  • JIN Hui ,
  • ZENG Fuying ,
  • SU Nan ,
  • SUN Ai ,
  • MA Shiyu ,
  • SHEN Juehong ,
  • WU Saijun
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  • Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China

Received date: 2020-01-08

  Revised date: 2020-07-30

  Online published: 2020-11-27

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摘要

利用钻井、地震、测井等资料解剖已知气藏,分析四川盆地绵竹-长宁克拉通内裂陷东侧震旦系灯影组四段（简称灯四段）台缘带丘滩体成藏条件,得到4点认识：①将裂陷东侧灯四段台缘带划分为北、中、南3段,中段位于高石梯-磨溪古隆起核部、现今构造高部位,南、北两段位于古隆起斜坡部位、现今构造低部位,3段台缘带丘滩体的发育特征和储集层特征具有相似性;②裂陷东侧边缘发育多条近垂直于台缘带的断裂,断裂导致台缘带形成高低相间的古地形,古地形高以沉积台缘丘滩体为主、储集层物性较好,古地形低主要为滩间洼地、丘滩体不发育、储集层物性较差;③近垂直于台缘带的6组断裂导致台缘带形成7个大型台缘丘滩体,台缘带油气成藏条件和成藏演化过程相似,丘滩体油气相对富集;④丘滩体之间的滩间洼地岩性较致密,对古隆起斜坡区现今构造低部位的台缘丘滩体上倾方向起封堵作用,有利于丘滩体气藏后期保存,角探1井、荷深2井的成功钻探可以提供佐证。研究认为,现今构造低部位的台缘丘滩体具备良好的勘探前景。图10表1参26

关键词： 四川盆地; 震旦系灯四段; 台缘带丘滩体; 构造低部位; 成藏; 勘探前景

本文引用格式

杨威 , 魏国齐 , 谢武仁 , 金惠 , 曾富英 , 苏楠 , 孙爱 , 马石玉 , 沈珏红 , 武赛军 . 四川盆地绵竹-长宁克拉通内裂陷东侧震旦系灯影组四段台缘丘滩体成藏特征与勘探前景[J]. 石油勘探与开发, 2020 , 47(6) : 1174 -1184 . DOI: 10.11698/PED.2020.06.10

Abstract

Drilling, seismic and logging data were used to evaluate the hydrocarbon accumulation conditions of the mound-shoal complexes in the platform margin of the fourth member of Sinian Dengying Formation in the east side of the Mianzhu-Changning intracratonic rift in the Sichuan Basin. The four understandings are: (1) The platform margin belt of the Deng 4 Member can be divided into three sections, north, middle and south; the middle section is at the core of the Gaoshiti-Moxi paleouplift and the structural high now, while the south and north sections are at the slope of the paleouplift and the structural lows now; the three sections have similar development characteristics and reservoir features of platform margin mound-shoal complex. (2) In the margin of the east side of the rift, there are several faults nearly perpendicular to the platform margin belt, the faults divide the platform margin belt into rugged paleo-landform, and the high part developed platform margin mound-shoal complexes and the reservoirs are good in physical properties, while the low part developed inter-beach depression and no mound-shoal complexes, where the reservoirs are poor in physical properties. (3) The six groups of faults nearly perpendicular to the platform margin belt divide the platform margin belt into seven large mound-shoal complexes which have similar hydrocarbon accumulation conditions and accumulation evolution process and are rich in petroleum. (4) The inter shoal depressions between the mound-shoal complexes are characterized by tighter lithology, which can block the updip direction of the mounds and shoals at the lower part of the slope of the paleouplift and are favorable for the later preservation of mound-shoal gas reservoirs. This has been proved by Well Jiaojian 1 and Heshen 2 drilled successfully. The mound-shoal complexes on the platform margin of the structural slope area have a good exploration prospect.

Key words： Sichuan Basin; Fourth member of Sinian Dengying Formation; mound-shoal complex at platform margin; low structural area; hydrocarbon accumulation; exploration prospect

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