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针对ABC油田在特高含水阶段开发中出现的地层脱气、油水井套损等问题,以吸水与采液指数变化规律为依据,在注采压力和注采比等指标技术界限研究基础上,提出并建立了基于水井端和油井端生产能力的采液速度技术界限的测算方法,以“以注定采”为原则确定油田整个注采系统的采液速度技术界限。结果表明:基于水井端的采液速度技术界限低于油井端的采液速度技术界限,这也进一步证实了特高含水阶段实施“以注定采”的必要性。提出的研究方法和得到的结论对特高含水油田开发理论研究和实际应用具有重要的参考价值。
In view of the problems of degassing formations, casing damage of oil and water wells in the development of the ultra-high water-cut stage of the ABC oilfield, based on the variation rules of water absorption and liquid production index, based on the research on the technical limits of injection- The calculation method of the technical limit of the liquid production speed based on the productivity of the well and the oil well is put forward and established. The technical limit of the liquid production speed of the whole injection and production system in the oil field is determined by the principle of “determined injection”. The results show that the technical limit of the liquid production rate based on the water well side is lower than the technical limit of the liquid production rate at the oil well side, which further confirms the necessity of implementing the “doomed mining” in the ultra-high water-cut stage. The proposed research methods and conclusions obtained have important reference value for the theoretical research and practical application of the development of ultra-high water-cut oil fields.