宋小川
SONG Xiaochuan

• 1:大庆油田有限责任公司勘探开发研究院

摘要(Abstract)：

渗透率变异系数是描述油藏非均质性的重要参数,在油田开发中经常用到。渗透率变异系数主要有3种常见算法,包括经验公式法、统计学法和洛伦兹曲线法,3种算法各有优缺点。由于计算方法的多样性,难免造成油层评价结果的不一致性。通过对大庆油田萨中开发区南一区渗透率变异系数计算,对比结果表明,其中经验公式法已经不再适用,统计学法和洛伦兹曲线法得出结果变化趋势相似,但由于洛伦兹曲线法在样品数量少的情况下求得结果存在误差,因此统计学法最适用于大庆油田。
Permeability variation coefficient is an important parameter for the characterization of heterogeneous oil reservoirs,so it is frequently used in the development of this kind of oilfield.Due to the diversification of the calculating methods,the evaluated results for the oil reservoirs are inevitable not coincident.There are three kinds of algorithms to calculate the coefficient,including empirical equation method,statistics method and Lorenz Curves method(Gini coefficient method).There are individual merits and dismerits for the three methods stated above.By means of the calculation of the permeability variation coefficients in South Block 1 of Sazhong Development Area of Daqing Oilfield,the contrast results show that the first method is not adapted any more,while the changed trends resulted from the rest two are similar,and moreover under the condition of less samples,there is a certain error for the obtained results by the last method,so the statistical method is most suitable to Daqing Oilfield.

关键词(KeyWords)： 渗透率;变异系数;经验公式法;基尼系数法;统计学法
permeability variation/variance coefficient;empirical equation method;Gini coefficient method;statistics method

Abstract:

Keywords:

基金项目(Foundation): 大庆油田重大科技专项“大庆油田4000万吨持续稳产关键技术”(DQP-2011-YC-KY-011)

作者(Author): 宋小川
SONG Xiaochuan

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