Research And Application Of Drilling Technology For Underground Gas Storage

Underground gas storage is will natural gas re injection underground space and the formation of a kind of artificial gas or gas reservoir, with the four major functions of strategic reserve, seasonal peak shaving, emergency safe gas supply and gas balance, to ensure national energy security and play of natural gas peak shaving and emergency function is of great significance. With the rapid development of the national economy and the growing demand for energy, underground gas storage will play a more important role in the field of oil and gas consumption and oil and gas safety in China. Underground gas storage needed to meet the 50 years of use requirements, the new injection production well design, construction and completion of tube on technologies are put forward very high requirements. At present, the construction of natural gas storage in China is still in the initial stage of exploration and exploration stage, the construction idea and technology is still relatively backward, and there is no relevant technical standards.This paper based on the technical difficulties encountered in the construction of underground gas storage well drilling engineering. To improve the large borehole injection mining level drilling safety, drilling efficiency and longevity fate behavior, of Changqing gas reservoir geology, straight hole anti deviation and fast drilling technology, inclined section trajectory control and exact window technique, the long horizontal section trajectory extension and control technology, low pressure coefficient a complex processing, low pressure coefficient of a complex situation handling, drilling fluid allocation technology is studied and discussed in this paper.This paper do for applied research, in Changqing Oilfield, a large number of horizontal well development technology based, system integrated a large number of advanced drilling engineering design concept and technology, preliminary study of scale development of gas storage provides a train of thought, the technology has strong feasibility.