ABSTRACT
Gas drilling technology is a revolutionary drilling technology and has been widely used in China as well as abroad. This paper introduces the geological characteristics of the reservoir in the study area, which is a typical reservoir with low porosity and low permeability and brings great challenges to drilling technology. Because of its flexible gas supply system, nitrogen drilling has good generalization. At the same time, this paper studies gas drilling parameters, gas drilling deviation control technology, gas drilling formation water judgment method, and more. Two well drilling tests were carried out in the field, which proved that the gas drilling technology can greatly improve the penetration rate, protect the reservoir and reduce the drilling cost. At the same time, the matching technology of natural gas underbalanced drilling equipment suitable for the geological characteristics of the study area has been formed.
