汶川地震科钻WFSD-3孔金刚石钻进岩粉粒度分析研究

Study on Rock Powder Particle Size Analysis in Diamond Drilling of Hole WFSD-3 in Wenchuan Earthquake Scientific Drilling

摘要:

固相控制是维护钻井液性能的关键工作。通过对汶川地震断裂带科学钻探三号孔(WFSD-3)金刚石钻进产生的岩粉进行激光粒度测试，分析岩粉粒度分布规律，从而为科学设计地质岩心钻探固控设备和合理配置地质岩心钻探固控系统提供依据，最终达到有效控制固相含量，稳定钻井液性能的目的。

Abstract:

Solid phase control is important to the maintenance of drilling fluid properties. Through the laser particle size measurement of the rock powder from diamond drilling of hole No.3 (WFSD-3)in Wenchuan earthquake fault zone scientific drilling, this paper analyzes the rock powder particle size distribution to provide the basis for the scientific design of geological core drilling solid control equipment and reasonable configuration of geological core drilling solid control system, and ultimately achieve the aims that the content of harmful solid in drilling fluid is effectively controlled to stabilize the drilling fluid performance.