Abstract: For the oil fields developed by the production sharing model, the existing economic limit production calculation method is not applicable. In order to solve this problem, a calculation model of the production of the economic boundary of a single well with consideration of proportion is established by using the principle of break⁃even analysis and the reservoir engineering method. The new model is used to analyze the effects of the factors such as proportion, water⁃cut and oil price on the economic limit production. Under the same water⁃cut condition, the higher the proportion, the lower the limit production. The higher the water⁃cut, the higher the economic limit production. The limit water⁃cut chart of oil field is established. The higher the proportion, the higher the oil price and the higher the limit water⁃cut. Based on the technical and economic parameters of A oilfield, the economic limit production and water⁃cut under different conditions are calculated at oil price of 70$/bbl,and corresponding adjustment measures are proposed , which guides the treatment of low⁃production wells and reduces the operating cost. That shows the model can be used to sharing development oil field to determine the economic limit production and limit water⁃cut.

Key words: Sharing model development, Limit production, Limit water?cut, Break?even principle

摘要： 现有经济极限产量和极限含水率计算方法对采用产量分成模式开发的油田不适用。针对这一问题，运用盈亏平衡分析原理，结合油藏工程方法，建立了考虑分成比例的单井经济极限产量和极限含水率计算模型。应用新模型分析了分成比例、含水率及油价等因素对经济极限产量的影响。相同含水率条件下，分成比例越高，极限产量越低；分成比例固定条件下，含水率越高，极限产量越高。建立了分成油田极限含水率图版，分成比例越高，油价越高，极限含水率越高。应用A油田技术经济参数，计算了70 $/桶油价下，不同情况的极限产量和含水率，并提出了相应的调整措施，指导了低产井的治理工作，降低了运营成本，说明该模型能够用于分成开发油田经济极限产量和极限含水率的确定。

关键词: 分成模式开发, 极限产量, 极限含水率, 盈亏平衡原理