On the Development and Performance Evaluation of Potassium Silicate Polyol Drilling Fluid

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On the Development and Performance Evaluation of Potassium Silicate Polyol Drilling Fluid

Wang, Ping-Quan / Bai, Yang / Qian, Zhi-Wei / Peng, Gang / Liu, Yi / Lv, Zhi-Qiang

It has been long known that the drilling hole stability is often a major issue faced by drilling workers. And for such a great challenge, a lot of work has been done both at home and abroad in the aspect of the chemical stability of wall, including developing and successfully applying such a series of drilling fluid systems as formate, oil base, synthetic base, silicate, polyol. Since silicate and polyol are often added into drilling fluid system as aggregation inhibitors and lubricants, there is no mixing use of them. In this paper, from the perspective of the comprehensive role of treating agent, the chemical effect of potassium silicate (gel sedimentation) and the physical effects of polyol (cloud point effect) are put into composite application so that a set of drilling fluid system of membrane structure and silicon potassium polyol with gel - cloud point effect is established, and a comprehensive evaluation of the performance of the system is given a complete explanation, opening up a new research direction for drilling fluid's stabilizing well wall.