甘肃敦煌城区DR3地热探采结合孔成井工艺

Well Completion Technology for DR3 Geothermal Mining-exploiting Combination Well of Dunhuang

摘要:

介绍了甘肃敦煌市区DR3地热探采结合孔成井工艺。该孔成功地引进了遇水膨胀橡胶止水，止水效果可靠，简便。用钻进泥浆泵固井永久止水、有效控制孔斜等技术措施，对类似地热井施工具有一定的参考价值。

Abstract:

The paper introduces the well completion process for DR3 geothermal mining-exploiting combination well in Dunhuang of Gansu Province. The water swelling rubber was successfully introduced for water stopping with simple and reliable effects. The techniques of the permanent water stopping by mud pump cementing and the effectively control on borehole inclination have certain reference values to the similar geothermal well construction.