见天坝海绵礁层序地层分析与储层评价  

Sequence stratigraphy analysis and reservoir evaluation for Jiantianba spongy reef

作　　者：刘富艳[1] 王延奇[1] 王书[1] 宋海敬[1] 许文强[2] 

机构地区：[1]油气资源与勘探技术教育部重点实验室长江大学,湖北荆州434023 [2]中油大庆钻探工程公司,吉林松原138003

出　　处：《特种油气藏》2009年第1期23-26,共4页Special Oil & Gas Reservoirs

摘　　要：鄂西利川见天坝晚二叠世生物礁位于利川复向斜构造带镶边型台地陡斜边缘,濒临鄂西海槽,属于台地边缘礁,该礁体大型柱状海绵丰富,构成生物礁生物骨架,并在不同水体深度发育不同礁石类型。将见天坝长兴组地层划分为P-Sq1和P-Sq22个三级层序,礁体主要在P-Sq1高位体系域发育。P-Sq1高位体系域可划分为4个岩性段,对应可划分出个4准层序组。Late Permian reef in Jiantianba of Lichuan, west Hubei province is located at the steep slope margin of the fringe platform in Lichuan synclinorium structural belt, close to west Hubei trough, and belongs to platform margin reef. This reef body has plenty of large columnar sponge, composing organic framework of the reef, and had developed different reef type at different water depth. The Changxing formation of Jiantianba has been divided into 2 third-order sequences, i.e. P-Sq1 and P-Sq2, with reef mainly developed in P-Sq1 highstand system tract. P-Sq1 can be divided into 4 lithologic sections corresponding to 4 parasequence sets.

关 键 词：生物礁 柱状海绵 层序地层 礁储层 见天坝 

分 类 号：TE121.3[石油与天然气工程—油气勘探]