Analysis on Failure Causes of Target Layer for Key Exploratory Wells in Wuxing Buried Hill of Yitong Graben
详细信息
- 责任者：Liu Chunyang (Northeast Petroleum University ; Daqing 163000 ; China) ; Wang Ying
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2013
- 卷期：20(4)
- 关键词：生储盖组合 ; source-reservoir-cap assemblage ; 吉林 ; Jilin Province
- 页码：p.426-429,434
- 图表：11 illus., 2 tables, 16 refs.
- 分类号：1003
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
Drilling failure is in the bedrock of target layer for Well 1.In order to solve this problem and identify the cause of failure,this paper analyzes the reservoir-forming condition.The result shows that the target layer has a good fault-structure trap and predominant migration condition because of reservoir abutting source rock and good reservoir in bedrock approved by reservoir evaluation and they are not the main factors of drilling failure.Fractures are ubiquitous in the first member mudstone of Shuangyang Formation which is regional cap rock on the Wuxing buried hill,and it presents negative correlation in amount between fractures and reservoirs found in this area.The research shows that the poor sealing of cap rock is the main reason of failure.It is suggested that deep exploration should avoid the tectonic boundary and relative thin mudstone layer in this region.
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