摘要
辽中凹陷沙河街组及部分东营组储层埋藏深度大及储层物性变化大的特点制约了中深层油气的勘探;通过分析沉积相、储层组成特点、成岩作用、异常高压、油气充注等对储层物性的控制,提出了中深层存在次生孔隙发育带,其形成主要源于岩屑长石砂岩中长石、碳酸盐岩胶结物、岩屑的溶蚀以及超压和早期油气充注对储层的保护。
The exploration of mid-deep oil and gas is constrained mainly by reservoir petro-physical changes of deep Dongying and Shahejie Formations. The petrophysical controlling factors, which include the sedimentary facies, reservoir compostion characteristics, diagenesis, overpressure, early oil and gas injection are discussed, then it is predicted that there exist secondary pore zones in the mid-deep reservoirs, which are derived from the protection of the feldspar, carbonate cement, debris and the protection of the overpressure and early oil and gas injection.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2006年第5期35-37,73,共4页
Journal of Oil and Gas Technology
关键词
辽中凹陷
古近系
中深层储层
主控因素
成岩作用
次生孔隙
Liaozhong Depression
Paleaogene
mid-deep reservoir
main controlling factor
diagenesis
secondary pores
