油藏有效厚度统计参数的特征与应用

PARAMETER CHARACTERISTIC AND ITS APPLICATION OF STATISTICAL EFFECTIVE THICKNESS OF RESERVOIR

康晓东 李相方 程时清

Kang Xiaodong Li Xiangfang Cheng Shiqing

石油大学石油天然气工程学院, 北京 102249

University of Petroleum

有效厚度是油藏评价中的重要参数之一,对该参数的正确理解是准确评价油藏的前提。在实际应用时,经常取单井有效厚度的统计平均值。阐述了在常规油藏开发模式下有效厚度统计平均值的主要特征表现为动态性、偏大性、时效性与不确定性。在用容积法计算油藏地质储量时,进行了多个实例的对比分析,阐述了有效厚度统计参数在应用中的体现。给出了用全油藏所有完钻井的单井有效厚度参数分析油藏潜力与评价油层平面展布状况的实例应用,提出的油层平面展布洛伦茨曲线评价方法适用性更强、计算结果更直观。在矿场应用中,为利用有效厚度参数准确地进行油藏评价提供了参考。

Effective thickness is one of the important parameters for reservoirs engineering calculation. It is precondition of evaluating reservoirs rightly to understand the essence of the parameter. In reservoir engineering, the parameter of effective thickness is available from single well base data based on logging data. The characteristics of dynamic, trending greater, time effective and uncertainty are presented based on the general development model of oil reservoirs. In calculating the reserves, multi cases contrast results show the characteristics. The methods to evaluate the reservoirs potential and the plane distribution of reservoirs, based on the effective thickness, are given too. The Lorentz curve method for evaluating the plane distribution of reservoirs has more extensive applicability than the present. They provides the references to evaluate reservoirs based on the parameter in field application.

10.3969/j.issn.1000-7393.2004.06.015