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采油井投产初期通常是靠充足的地层能量进行自喷开采。开采一段时间后,地层压力降低,仅靠地层的能量不能将原油举升到地面上来,这时油井处于停喷状态。采用向注水井注入高压水的方法,使地层补充一部分能量,可以延长油井自喷开采的时间。对于地层能量不足的油井,根据不同情况,选择不同的机械采油方法,可以提高油井的产量。例如在油井中安装抽油泵来采油或向油井管柱中注入高压气体气举采油,都可以提高油井的产量。
The initial operation of production wells is usually based on sufficient stratigraphic energy from the mining. After mining for a period of time, the pressure in the formation is reduced. Only the formation energy can not lift the crude oil to the ground. At this time, the oil well is in a state of no-injection. The method of injecting high pressure water into the injection well enables the formation to replenish a part of the energy, which can prolong the time of self-injection of the oil well. For wells with insufficient formation energy, depending on the circumstances, different types of mechanical oil recovery methods can be used to increase oil well production. For example, installing a pump in an oil well to produce oil or injecting high-pressure gas into a well string can lift the well.