摘要
川西侏罗系致密砂岩储层中，存在局部构造、卸载、层理及溶蚀等数种裂缝类型，而由地史过程中的隆升卸载作用形成的古卸载裂缝是主导裂缝，也是油气富集、成藏及产出过程中的主要渗滤通道。
A number of comprehensive study data of cores,structures,inclusions,well testing performance and fracture pressure gradient have shown that there are several fracture types in the Jurassic tight sandstone reserviors of western Sichuan basin,such as local structures,subtraction (load relieving),stratification and corrosion etc.The leading origin type of fracture is the paleo subtractive one formed by uplifting subtraction during geohistorical process,which is the main percolation passage in the process of oil/gas concentration,reservoiring and production.
出处
《石油实验地质》
CAS
CSCD
北大核心
1999年第1期12-17,共6页
Petroleum Geology & Experiment
基金
国家重点科技攻关项目
关键词
裂缝特征
成因类型
砂岩油气田
气藏
fracture characteristics, genetic types, unloading fracture
