[1]张美华.伏龙泉断陷反转构造与油气富集规律[J].复杂油气藏,2018,(04):23.[doi:10.16181/j.cnki.fzyqc.2018.04.005]
　ZHANG Meihua.Inversion structures and hydrocarbon accumulationrules of Fulongquan Fault Depression[J].Complex Hydrocarbon Reservoirs,2018,(04):23.[doi:10.16181/j.cnki.fzyqc.2018.04.005]
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伏龙泉断陷反转构造与油气富集规律()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
期数:
2018年04期
页码:
23
栏目:
油气勘探
出版日期:
2018-12-25

文章信息/Info

Title:
Inversion structures and hydrocarbon accumulationrules of Fulongquan Fault Depression
作者:
张美华
中国石化东北油气分公司勘探开发研究院,吉林 长春 130062
Author(s):
ZHANG Meihua
Exploration and Development Research Institute, Northeast Oil and Gas Company, SINOPEC, Changchun 130062,China
关键词:
构造期次 成藏期 流体包裹体 反转率 富集规律
Keywords:
structural stages;  hydrocarbon accumulation stags;  fluid inclusions;  reverse ratio;  hydrocarbon accumulation rules
分类号:
T122
DOI:
10.16181/j.cnki.fzyqc.2018.04.005
文献标志码:
A
摘要:
松辽盆地伏龙泉断陷经历了断陷期、拗陷期、反转期三个演化阶段,具有典型的断坳叠置盆地特征; 断陷期为东断西超的半地堑盆地,发育4条控洼断层,依次控制了4个沉积次洼; 拗陷期地层受明水末期构造反转挤压,形成了反转背斜构造。伏龙泉断陷有两个主要的成藏期:泉头组时期与明水组末期,主要的油气分布层位是泉头组和登娄库组,为反转调整形成的次生油气藏,明水组末期是主要的成藏期。明水组末期构造反转是新圈闭形成和油气再次运移的过程,反转使得主要断层再次活化,形成油气运移通道,断陷层烃源岩生成油气向上运移到坳陷层圈闭中,形成次生油气藏。平面上,伏南次洼油气最为富集,伏北次洼次之,顾家店次洼最差。通过定量计算反转率得到:顾家店次洼为0.37,伏南次洼为0.1,伏北次洼反转轻微,因此,反转率适中的区域最有利于次生油气藏的形成和保存。
Abstract:
The Fulongquan Fault Depression in Songliao Basin has experienced three evolution stages of fault depression, depression and inversion, which has typical characteristics of superposed basin. It is a half graben basin with east-faulting west-overlapping at the fault depression stage, and four control sag faults were developed, which controlled the four subsags in turn. The reverse anticline was formed through the depression strata compressed by the structural inversion at later K2m. There are two main hydrocarbon accumulation stages: K1q and later K2m, where most hydrocarbon reservoirs are distributed in K1q and K1d.The reservoir is a secondary hydrocarbon reservoir formed by the structural inversion, and the later K2m is the major hydrocarbon accumulation stage. The structural inversion is the stage forming new traps and causing the hydrocarbon secondary migration, in which the inversion reactivated the major faults, forming hydrocarbon migration paths.And then the hydrocarbon from the source rocks of fault depression strata migrated upward to the traps of depression, forming secondary hydrocarbon reservoirs. In horizon,the hydrocarbon accumulation in Funan Subsag is the best, Fubei Subsag takes second place, and Gujiadian Subsag is the worst.Taking the structural reverse ratio as a factor controlling the hydrocarbon accumulation, the reverse ratio of Gujiadian subsag is 0.37, Funan subsag is 0.1, and Fubei subsag is slightly.So, the area with a medium reverse ratio is beneficial to the formation and conservation of secondary hydrocarbon reservoirs.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-07-06; 改回日期:2018-09-30。
作者简介:张美华(1982—),工程师,从事石油地质工作。E-mail:zhangmeiyin@foxmail.com。
更新日期/Last Update: 2018-11-25