川东北海相天然气成藏主控因素类型及勘探方向

Main Controlling Factors Types of Reservoir-Forming for Northeast Sichuan Marine Origin Gas and Its Prospecting Direction

在分析和总结川东北上古生界-中生界海相天然气成藏控制因素的基础上,以成藏主控因素为分类依据,划分出川东北上古生界-中生界海相成藏系统5种成藏主控因素类型,并对各类型典型气藏的成藏主控因素和勘探潜力进行分析,优选出构造+礁滩型、礁滩型为川东北海相最重要的成藏主控因素类型,据此以"寻找规模储量"为核心,提出了川东北天然气的勘探方向。

Based on analyzing and concluding controlling factors of reservoir-forming for Northeast Sichuan first part of Paleozoic-Mesozoic marine origin gas,using main controlling factors of reservoir-forming as the basis of classification,the article classifies 5 main controlling factors types of reservoir-forming for Northeast Sichuan first part of Paleozoic-Mesozoic marine origin reservoir-forming system.It also analyzes main controlling factors of reservoir-forming and the prospecting potential for various typical gas reservoirs and optimizes structure + coral shoal type and coral shoal type as the most important main controlling factors types of reservoir-forming for Northeast Sichuan marine facies.In the light of this achievement,it puts forward the prospecting direction of Northeast Sichuan gas with seeking large-scale reserves as the core.