A Study On Economic Limit Of High Water Cut Well And Layer

A study on economic limit of high water cut well and layer is a part of petro technology economics, is a comprehensive application decision technique of the oil-field development and economy evaluation. In the view of microscope, the main content of a study on economic limit of high water cut well and layer is the way of economically producing and operating an oil well and correspondingly measure[0]s, make the allocation of yield and performance gradually reasonable and science.On the basis of systematically research and study the research actuality of economic performance and economic limit of single well at home and abroad, through analyzing the present situation and problems of oil field , According to the difference of research problem and object in the oil field development, this paper analyzed the items of operating cost which maintain the normal production oil field and oil well, brought forward the concept of dividing the operating cost of single well ,and divided the operating cost of single well into the minimum operating cost and allocated cost. Based on the operation data of actual producing of single well, the operating cost is divided into direct cost and indirect cost, the standard of cost apportion is built to single well, the method of determining operating cost of single well is built up.Considering whether the oil well is efficient in whole or in part and whether the investment spending before is treated submersed, based on present financial system, this paper built the definition of inefficient well, marginal contributed well and benefited well. According to the analysis of the main affecting factor and historical data, the selected standard of evaluation parameter about the oil field economic benefit, non-effective economic limited model of single well is built up. Applying the marginal theory and the break even principle , and in accordance with the definition of the inefficient well, marginal contributed well and benefited well, this paper built the economic limit model of inefficient well, marginal contributed well and benefited well, and analyzed the affecting factors of single well economic limit.Since there are high water cut oil producing reservoirs in single well which is evaluated beneficially, Combining the production reality of oil-field development and considering the risk and uncertainty, this paper combined the cost function, production function and benefit, and built up a model of studying on technical and economic limit of high water cut well and layer, so that the maximization of oil-field'benefit can be realized.