Drilling Construction Practice of Shale Gas Banzhu Well 1

Abstract:

Shale gas is an invaluable clean and efficient new energy in the 21 century; the requirements on its exploration drilling construction technology have certain changes than they were before. The final hole diameter is large because of the larger core diameter, and the equipment driving power should be one or two levels higher than that for those geological survey holes of the same depth. Besides, flushing fluid is needed in gas logging as a medium, so there are limitations of affecting gas logging for flushing fluid; and measures to prevent poisonous & harmful gases and fire accident are also required for safety management. Timely adjustment of drilling parameters is one of the effective measures to ensure the core recovery rate in soft and broken formations. Good installation quality, good drilling tool conditions and complying with operation norm of wire-line core drilling are very important to ensure the quality of drilling construction.