渤海A油田火成岩地层井身结构优化与应用

Optimization and application of wellbore structure in igneous formation of Bohai A Oilfield

渤海A油田沙河街组和东营组存在多期火山活动,已钻井资料揭示该区钻遇的火成岩岩石类型多样,分布广泛。火成岩地层机械钻速缓慢,对钻井时效影响较大,与此同时井漏、火成岩掉块等复杂问题是有发生,本文旨在通过对火成岩地层井身结构采取"增、减、瘦"形式优化并对形成相关配套技术,以期对该区块后续深井开发有指导意义和推广价值。

There are multiple periods of volcanic activities in shahejie formation and dongying formation of A oilfield in bohai sea. Drilling has revealed that igneous rocks encountered in this area are of diverse types and widely distributed. Igneous rock formation of penetration is slow,time limitation of drilling,lost circulation at the same time,the igneous rock impellers complex problem has occurred,this paper aims to igneous rock formation well bore structure optimization of the form of "thin" of add,subtract,and to form the relevant supporting technology,in order to the blocks in the subsequent development of deep well has guiding significance and promotion value.