低渗气井化学控水采气技术研究进展

摘要

With low permeability gas reserves increasing, a large number of gas well exist formation water breakthrough problems,the gas well production efficiency in low permeability gas reservoirs is influenced seriously. The mechanism and type of formation water breakthrough in low permeability gas well was introduced. The recovery gas by discharge water techniques and water control in gas well at home and aboard was summarized. The application and effect of polymer and nanofluids to water control in gas well were illustrated mainly. The problems to be solved for the water-bearing gas reservoir development were pointed out.%我国低渗气藏所占比重持续增加,大量气井存在地层出水问题,严重影响低渗气井开采效益.介绍了低渗气井出水机理及类型,综述了国内外排水采气工艺及气井控水方面的研究进展,重点列举了聚合物及纳米流体控水剂在气井控水中的应用及其效果,指出了高效开发含水气藏尚需解决的问题.