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冀东油田广泛应用注水工艺,注水井作业较为频繁。在注水井作业前,要停注待作业井及周围注水井,然后放压,待井口压力降至0.5-1Mpa左右,采用压井的方式以达到作业的条件。为了减少水井停注次数,缩短作业周期,避免放喷降低地层压力,减轻环境污染,引进了不压井带压作业技术。现场应用情况表明,该技术可降低水井维护费用,减轻对油气层的伤害及对地面的污染,缩短作业周期等方面有明显的效果。
Jidong Oilfield widely used water injection technology, water injection wells are more frequent operations. In the injection well operations, to stop working wells and around the injection wells, and then pressure, until the wellhead pressure dropped to about 0.5-1Mpa, the use of kill methods to achieve the job conditions. In order to reduce the number of stoppages in wells, shorten the operation cycle, prevent the injection pressure from reducing the formation pressure and reduce the environmental pollution, the technology of uncoupling belt pressure was introduced. The field application shows that this technology can reduce the maintenance cost of the well, reduce the damage to the oil and gas layer and pollute the ground, and shorten the operation cycle and so on.