气井凝胶堵水技术研究

Water Shut-Off with Gel Placement treatments study in Gas Wells

气井产水是很普遍的生产现象,具有很大的危害。通过堵水处理能有效降低产水量,同时还能提高产气量,延长开发期,国外一些油田通过对气井堵水技术的研究,发展形成了一系列凝胶/气体注入技术应用于裂缝性气藏。进一步的成果是提高凝胶在基岩中的堵水效果[1]。

The objectives of water shut-off treatments in gas wells suffering from water influx are to reduce water production and at the same time increase gas production rates and producible gas reserves. Several field treatments, conducted under the umbrella of a research project focused on water abatement in gas wells, have demonstrated that a sequential gel/gas injection technique in fractured gas reservoirs was successful in reducing water production and increasing gas production. Further efforts focused on improving gel placement in both fractured and matrix reservoirs to improve the treatment efficiency.