Drilling of Well Wanhandi1 for shale gas geological survey

Abstract:

Well Wanhandi1 was a geological survey well deployed and implemented in the Chaohu anticline tectonic belt in the middle section of the inrush nappe zone. The purpose was to obtain various geological parameters of OdovicSilurian shale in the Chaohu-Hanshan-Wuwei region， providing geological basis for the evaluation of shale gas resource potential and the optimization of favorable blocks in this region. This paper mainly expounds the general situation of the well site area, drilling techniques and process for Well Wanhandi1, drilling quality control, proper adaption of the drilling parameters during drilling, and effectively control of the borehole inclination, which conforms to the purpose of geological design. Analysis of the rig efficiency is made so as to provide experience for upcoming drilling.