塔河油田高比重钻井液技术研究

Study of high-density drilling fluid used in the Tahe Oil Field

蒲开臣

Pu Kaichen

中国石化西北油田分公司石油工程监督中心, 新疆轮台 841600

Engineering Supervision Center, SINOPEC Northwest Company, Luntai, Xinjiang 841600, China

从石油工程角度介绍了高比重钻井液在塔河油田外围超深井施工中的重要性及技术难点,结合目前塔河油田钻井液施工现状,提出了在高温高压的深井井筒环境中处理钻井液性能的思路。通过设置一系列针对性对比实验,采用热滚的方式模拟井下真实井筒环境研究钻井液的流变性特点,并根据实验结果优化钻井液维护参数,摸索出了处理高比重钻井液的方法。成功维护处理深井高比重钻井液的关键是适宜的膨润土含量、固相及滤失控制、体系抑制性及高温稳定性。

The importance and difficulties of the application of high-density drilling fluid in ultra-deep wells in the outside district of the Tahe Oil Field were discussed from the aspect of petroleum engineering. Combined with current implement situations, we made several methods on dealing with drilling fluids which are in HTHP well-bore surroundings. Through series of control-experiments, we imitated the true surroundings down hole via a roller oven. We optimized the handling ways to fluids from gained parameters according to the experiments. The keys of successfully manipulating deep well high-density fluids are bentonite, solid phase, filtration control, system's rejection capability and stability.

https://doi.org/10.11781/sysydz2015S1138