【摘要】 为了探明克拉 2气藏异常高压的原因 ,通过对克拉 2气田钻井、声波时差和压力测试资料分析 ,认为有封存箱存在 ,下第三系膏盐岩层和中上侏罗统泥岩层是封存箱的顶板和底板 ,分布于克拉 2圈闭四周的逆断层和走滑断层是封存箱边板 ,下第三系底部砂砾岩段和白垩系砂岩构成了封存箱的主体层系 .克拉 2封存箱是天然气运聚成藏的基础 .计算结果表明 ,该封存箱具有很高的天然气聚集效率更多还原

【Abstract】 According to the analyses of drilling, well logging and pressure detection data, it is held that there is an overpressured compartment in Kuche Depression, Paleogene gypsum and upper—middle Jurassic shale layer constitute the top cover and the bottom cover of the compartment separately, the thrust faults and the strike-shift faults around the compartment constitute its side covers, and the glutinite layer in the bottom of Paleocene and the sandstone layer of Cretaceous constitute the main strata series of the compartment. Kela2 compartment is the basic unit for gas migration and accumulation of Kela 2 gas field, and the result of calculation shows that the compartment has a very high efficiency of gas accumulation.更多还原