The Feasible Discussion of Gas Recovery about Coal bed methane、 Tight gas and Shale gas -'Three gases' Commingling

摘要

There are abundant resources and great potential of unconventional gas-coal bed methane、 tight gas、 shale gas.But it also faces the fact that the unconventional gas is under the low production of single well and bad economic performance overall in our country. According to the exploration of coal bed methane, tight gas and shale gas are parts of longitudinally overlap and the characteristics of each layer of reserves are quite rich. At the same time the production of any kind of resources is low production and high mining costs and easy to cause the actual gas waste of resources in some areas. This article is mainly analyzed and discussed from the reservoir characteristics, the development ways and the gas recovery sections to find that selecting favorable areas.Through the reasonable gas reservoir engineering design, optimizing of production pipe string design, and introducing the new gas recovery methods, etc. To carry out the mining of "three gases"-coal bed methane, tight gas and shale gas or "two gases" is feasible and of very important practical significance. We believe that in the current downturn of oil and gas industry, the new unconventional gas mining process will be very good use of different kinds of natural gas, improving the production of a single well, but also provide a new direction for the development of unconventional gas.