摘要
川南、川西南地区三叠系嘉陵江组虽为致密碳酸盐岩沉积,但经早期淡水淋溶和晚期构造改造,可变为连通的多孔洞缝似层状储层而形成断层圈闭油气藏。大量钻探资料证明,断后的嘉陵江组碳酸盐岩对油气一般都具有较好的遮挡条件。按形成方式和形态,嘉陵江组断层圈闭可分为6类,总勘探成功率达70.5％。
<ABSTRACT>: Although Jialingjiang Formation of Triassic system in south and southwest ar-eas of Sichuan is tight carbonate deposition leached by early fresh water and its structure is reformed in a later period,the tight carbonate formation can become multiple porous fracture layered reservoirs,and then become fault trap oil and gas reservoirs. Many boring data proves that carbonate of Jialingjiang Formation generally has better barrier condition for oil and gas after faulted. Based on form types and shapes,fault traps in Jialingjiang Formation can be de-vided into six types and their success ratio of exploration reaches 70. 5%.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
1993年第2期8-12,共5页
Petroleum Geology & Oilfield Development in Daqing
关键词
断层
圈闭
气藏
碳酸盐岩
嘉陵江组
: Fault trap gas reservoirs,Carbonate Jialingjiang Formation,Sichuan gas field
