水平井与分支水平井产能计算的几个问题

PROBLEMS CONCERNING THE PRODUCTIVITY CALCULATION OF HORIZONTAL WELL AND BRANCH HORIZONTAL WELL

窦宏恩

Don Hong’en

中国石油勘探开发科学研究院

近年来,水平井和分支水平井产能的计算公式国内学者提出的不下10种,导出者都采用了不同的数学方法推导和证明其导出式的正确性,但由于假设条件和边界条件的不同,其导出式也有较大差别。使现场油藏工程工作者从诸多的数学表达式中找出适合适用的油藏工程计算模型,消除水平井和分支水平井产能公式使用中的混乱状态,是本文将试图要回答的问题。

By now, the scholars in China has put forward more than 10 formulas for calculating the productivity of horizontal well and branch horizontal well. All of them deduced and proved the validity of the formulas by use of different mathematics methods, and the formulas are very different due to the diverse hypothesis and boundary conditions. Thus, many incorrect conclusions have been observed. In order to let the reservoir engineers get the suitable models to carry through reservoir engineering calculation, this paper will clarify several problems and eliminate the chaos of formula application.

10.3969/j.issn.1000-7393.1999.06.012