聚合物防塌钻井液在天津地热定向井的应用

Application of Polymer Anti-caving Drilling Fluid in Directional Geothermal Well in Tianjin

摘要:

针对天津市地热定向井施工中存在的孔壁不稳的问题，经过摸索，采用聚合物防塌钻井液进行护壁堵漏，取得了良好的效果。介绍了聚合物防塌 井液的组分、作用机理、特点以及现场应用情况。

关键词:地热定向井 聚合物 防塌 钻井液

Abstract:

Polymer anti-caving drilling fluid was used to deal with hole wall instability in constriction of directional geothermal well in Tianjin. The components, mechanism, specifications of the drilling fluid and the field application are introduced.

Key words:directional geothermal well; Polymer; anti-caving; drilling fluid