Drilling and Completion Technology in the First Geothermal Well Construction in Jixian System in Tangshan

Abstract:

The termination depth of ZK1 geothermal well in Tangshan is 3204.8m with “four section” well structure, the revealed formations are complicated. In the construction process, according to the different formations encountered, the BHA and the parameters of drilling and drilling fluid were adjusted timely to reduce the construction risks of drill rod burying and sticking caused by mud leakage, block falling and wall collapse due to large formation changes; the safety and quality of well drilling and completion construction were ensured. This project provides successful experience for geothermal well construction in the same or similar formations in Tangshan area.