Research on the Matching Bit Technology for Deep Well Turbodrilling in Daqing and the Application

Abstract:

In order to improve the exploration benefit of deep compacted sandstone gas reservoir, shorten the drilling cycle and lower the drilling investment in Daqing, the research has been carried out on drilling speed increase for turbodrilling technology. Firstly, based on the working principle of turbodrilling, the matching bit optimization is studied, the matching bit is determined by the pilot test; then considering the site construction conditions, the matching technologies of BHA is studied to form the improved drilling technology for deep well turbodrilling in Daqing, this technology has been proved successful in Dashen well 15, and a new record of ROP in Qingshen gas field generated, which provided new technical means for the drilling and exploration of deep natural gas reservoir.