盐水钻井液配制方法对其性能的影响

Influence of the Preparation Method on Saltwater Drilling Mud Properties

摘要:

随着钻井技术的发展，深井、超深井钻遇复杂地层的情况越来越多，对钻井液性能提出了越来越高的要求。通过对盐水钻井液的配制方法进行理论分析和对比，并结合现场应用，利用已有抗盐材料，基于预水化对钻井液性能影响机理及预水化时间的长短对钻井液性能的影响进行了研究。试验得出，预水化对钻井液的性能起着至关重要的作用，且随预水化时间的变化，钻井液性能产生不同的变化趋势，根据钻井液要求的侧重点不同，为配制不同性能指标的钻井液提供实践指导和理论依据。

Abstract:

Along with the development of drilling technology, more and more complex stratum situations are encountered in deep and ultra-deep well drilling, and the demand of drilling fluid performance becomes higher. By the theoretical analysis and contrast on preparation methods of saltwater drilling fluid, according to the field application with existed salt resistant materials and based on the analysis and the tests on influence mechanism of pre-hydration to drilling fluid properties and influence of pre-hydration time to drilling fluid properties, it showed that the pre-hydration is very important to the performance of drilling fluid. With the changes of hydration time, drilling fluid property produces different changing trends. The analysis provides practical guide and theoretical basis to preparation of different drilling fluids with different emphasis points.