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确定合理地层压力是确定整个压力系统的关键,它一方面决定了注水井的注入压力和地层压力,另一方面又制约油井的流动条件,保持合理的地层压力是实现油田稳产的基础。地层压力过低,能量不足,会导致油井产能下降,甚至丧失生产能力。地层压力过高,尤其在油藏含水较低阶段,会加剧油田的平面和剖面的矛盾,同样会降低油井产能,因此油井地层压力应保持在一个合理的水平。
Determining reasonable formation pressure is the key to determining the whole pressure system. It determines injection pressure and formation pressure of injection well on the one hand and restricts oil well flow conditions on the other hand. Maintaining reasonable formation pressure is the basis for stable oil production. Stratum pressure is too low, lack of energy will lead to decline in well productivity, or even loss of production capacity. Stratum pressure is too high, especially in the lower stage of reservoir water, will aggravate the contradiction between the plane and profile of the oil field, also will reduce the production capacity of the well, so the formation pressure should be maintained at a reasonable level.