Study on the Limit Value of Production and Water Cut in Overseas Oilfields

A oilfield is one of the first overseas oilfields in daqing oilfield’s going-out strategy. There is only a few years from the end of the development period. It is now in the middle and late stage of development. In the past two years, the water cut has increased greatly, the decline has accelerated, and the development cost has increased year by year. So it is urgent to study the limit value of production and water cut. At present, the calculation method of limit value is not suitable for the overseas oil field where the production needs to be divided. Therefore, this paper uses the break-even principle, combines the reservoir engineering theory knowledge and the overseas oilfield development contract, establishes the suitable overseas oilfield production and water cut calculation model. This model is used to calculate the limit value of A oilfield, and the result shows that the limit value of production and water cut of overseas oilfield has a great relationship with the contract proportion and oil price. Under the same oil price, the higher the proportion is, the lower the production limit is and the higher the water cut limit is. Under the same contract proportion, the higher the oil price is, the lower the production limit is and the higher the water cut limit is. In this paper, for the first time, a calculating model is established which can be used to calculate the limit value of production and water cut in overseas oilfields.