珠江口盆地东部勘探评价井失利原因分析  

Reasons for Failed Exploration Evaluation Wells in the Eastern Pearl River Mouth Basin

作　　者：钟辉 张为彪 贺勇 朱定伟 卫哲 易震 蔡俊杰 张琴 Zhong Hui;Zhang Weibiao;He Yong;Zhu Dingwei;Wei Zhe;Yi Zhen;Cai Junjie;Zhang Qin(Shenzhen Branch of CNOOC Ltd.,Shenzhen Guangdong 518054,China)

机构地区：[1]中海石油(中国)有限公司深圳分公司,广东深圳518054

出　　处：《地质科技情报》2018年第6期115-121,共7页Geological Science and Technology Information

摘　　要：为了科学认识珠江口盆地东部勘探评价井的风险程度和风险因素,以采取针对性的措施,降低风险,对勘探评价井的失利原因进行了分析。首先,依据评价目的的不同,将勘探评价井分为两大类,即详探落实资料井和探索潜力井;然后,在分析研究区勘探评价井分布特点的基础上,系统总结了详探落实资料井和探索潜力井的失利原因,并结合实例进行了分析讨论。结果表明:详探落实资料井失利率为10.6%,失利最主要的原因是圈闭条件,其次为运聚匹配条件;探索潜力井的失利率为47.3%,存在较大的风险,失利的原因按所占比重从大到小依次是圈闭条件、储层条件、运聚匹配条件、盖层条件和保存条件。圈闭条件、储层条件、运聚匹配条件是研究区下一步勘探评价工作需要研究的重点。In order to scientifically understand the risk degree and factors of the exploration evaluation wells in the eastern Pearl River Mouth Basin so as to take targeted measures to reduce the risk,the article analyzes the reasons of the failed exploration evaluation wells.First of all,according to the different purposes of evaluation,the exploration evaluation wells are divided into two categories,namely,the detailed exploration wells for data and exploring potential wells.Then,based on the analysis of the distribution characteristics of exploration evaluation wells in the study area,the reasons for the failure of the detailed exploration wells for data and exploring potential wells are systematically summarized,and then are discussed with some examples.The results show that the failure rate of the detailed exploration wells for data is 10.6%,and the main reason is the trap conditions,followed by migration and convergence matching conditions.The failure rate of exploring potential wells is 47.3%,which is a big proportion,and the reasons for the failure are trap conditions,reservoir conditions,migration and convergence matching conditions,cap rock conditions and preservation conditions in the descending order of proportion.Trap conditions,reservoir conditions,migration and convergence matching conditions are the key points for the next exploration evaluation work.

关 键 词：珠江口盆地东部 勘探评价井 失利原因 圈闭条件 储层条件 运聚匹配 

分 类 号：TE142[石油与天然气工程—油气勘探]