论文部分内容阅读
在天然气井进行井下作业前,将暂堵剂挤入生产层位附近,以暂时封堵生产层,使地层压力不被释放,井筒内的压井液不污染地层,待施工作业结束后,及时进行解堵,确保天然气井不受伤害或少伤害,从而恢复天然气井的生产能力。针对天然气井大修作业时,经常补充压井液,由于作业时间长,大量压井液进入地层,造成严重污染,导致天然气井恢复生产困难的问题,研制出一种新型气井作业的屏蔽暂堵剂,具有污染小,易解堵等特点,有效解决了大修污染问题,现场应用取得良好效果。
Before the natural gas well goes downhole, the temporary plugging agent is squeezed into the production horizon to temporarily block the production layer so that the formation pressure will not be released. The well killing fluid in the wellbore does not pollute the formation. After the construction work is finished, Unplug it to ensure that the natural gas well is not harmed or harmed, thus restoring the productivity of the natural gas well. In the case of natural gas well overhaul operations, the well killing fluid is often replenished. Due to the long operation time and the large amount of killing fluid entering the formation, causing serious pollution, resulting in the difficulty of resuming the production of natural gas wells, a new temporary plugging agent for gas wells operation has been developed , With a small pollution, easy to plug and so on, effectively solve the overhaul of pollution problems, field application achieved good results.