确定油井经济极限产量和极限井控面积的简易方法

Simple method for determining economically limited production rate and well spacing

陈元千1 孙 兵

中国石油勘探开发研究院，北京 100083 中国石化石油勘探开发研究院，北京 100083

Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083, China Research Institute of Petroleum Exploration and Development, SINOPEC, Beijing 100083, China

在油田开发进入中后期之后，为了维持油田产量、降低产量递减率和提高采收率，打加密井是进行开发调整的重要手段。然而，油井加密的程度受到生产成本、油气价格和极限井控面积的制约。油井经济极限产量和极限井控面积则是评价加密开发调整效果的2个重要指标。基于投入与产出平衡的基本原理，提出了确定油井经济极限产量和极限井控面积的简易方法。实例应用表明，该方法是实用有效的。

Abstract:  After the oilfield development goes into the medium-later stages, infill wells must be an important measure for the development adjustment in order to maintain oil output, decrease production decline rate and improve oil recovery. However, the degree of infill wells depends on production cost, oil and gas price and tax rate, etc. The economically limited production rate and well spacing are two important indexes to estimate the adjustment efficiency of infill wells. Based on the basic economic principle of the balance between input and output, simple methods for determining economically limited production rate and well spacing are proposed in this paper. The methods are proved to be effective with example application.