基于敏感因子的渗透率模型建立

Establishment of Permeability Model Based on Sensitive Factor

周全 尹璐 张伟

ZHOU Quan YIN Lu ZHANG Wei

中海油田服务股份有限公司，河北三河　065201

China Oilfield Services Co., Ltd., Sanhe Hebei 065201, China

随着近几年低渗储层开发力度的不断加大，对于精细评价储层的要求也越来越高，常规Timur公式计算储层渗透率已无法满足解释评价的需求，如何提高储层渗透率计算精度成为一大难点。此文通过分析陆丰凹陷文昌组沉积环境及成岩作用对储层物性的影响，提取了与渗透率相关的敏感因素，并以此为基础，综合岩心实验分析及地质、测井资料，建立了一套基于岩性分类的渗透率计算模型，并在实际中取得了较好的应用效果，为精确评价储层渗透率提供了更为快捷有效的途径。

With the increasing development of low-permeability reservoirs in recent years, the requirements for accurate evaluation of reservoirs is becoming higher and higher. The Timur formula for calculating reservoir permeability cannot meet the needs of interpretation and evaluation. How to improve the accuracy of reservoir permeability calculation has become a major difficulty. This article analyzes the influence of sedimentary environment and diagenesis on physical properties of Wenchang formation in Lufeng depression zone, and extracts the sensitive factors related to permeability. On this basis, synthesizes core experimental analysis, geological and logging data, one permeability calculation model which based on lithological classification has been established. Good application results have been achieved in practical application, which provides a more rapid and effective way for accurately evaluating reservoir permeability.

https://doi.org/10.3969/j.issn.1008-2336.2020.03.067