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青海尕斯库勒油田砂西E31油藏主要有天然能量开采,随着地层压力的下降,油藏产能进一步下降。目前油藏表现为单井产量低、采油速度低、采出程度低、井况差等特点,油田产量、效益持续下降,如何改善尕斯库勒油田砂西区块E31油藏的开发效果显得日益重要。该油藏最近两年压裂改造投入产出比达到1∶3以上,经济效益较好,压裂投产、老井恢复、重复压裂和扩边挖潜是该油藏压裂改造的主要趋势。
The gas reservoir in the Xi’xi E31 reservoir in the Gasculer oil field of Qinghai mainly contains natural energy. As the pressure of the formation decreases, the oil reservoir capacity further decreases. At present, reservoirs are characterized by low production per well, low oil recovery rate, low recovery rate and poor well conditions. The yield and benefit of oilfields have been declining continuously. How to improve the development effect of E31 reservoir in Shasiqu Oilfield important. The ratio of input-output of fracturing in the past two years has reached more than 1: 3, and the economic benefits are better. The fracturing production and recovery, recovery of old wells, repeated fracturing and edge enlargement and tapping are the main trends of this reservoir fracturing.