新疆石油地质

新疆石油地质 ›› 2006, Vol. 27 ›› Issue (3): 316-318.

• 油藏工程 • 上一篇    下一篇

裂缝性低渗透油藏稳态渗流理论模型

冯金德, 程林松, 李春兰   

  1. 中国石油大学 石油天然气工程学院, 北京 102249
  • 收稿日期:2005-09-19 修回日期:2005-11-09 出版日期:2006-06-01 发布日期:2020-10-19
  • 作者简介:冯金德(1974-), 男, 四川简阳人, 在读博士研究生, 油气田开发,(Tel) 010-89733726(E-mail) kind.f@163.com.
  • 基金资助:
    国家自然科学基金项目,西部深层变形介质复杂油气非线形渗流模型(90210019)资助

A Theoretical Model of Steady-State Flow for Naturally Fractured Low-Permeability Reservoir

FENG Jin-de, CHENG Lin-song, LI Chun-lan   

  1. Institute of Oil-Gas Engineering, China University of Petroleum, Beijing 102249, China
  • Received:2005-09-19 Revised:2005-11-09 Online:2006-06-01 Published:2020-10-19

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摘要： 随机分布在储集层中的天然裂缝不同于与油水井相连通的人工裂缝,进行稳态产能方程研究时,在数学上用常规方法难以对其进行处理。用等值渗流阻力法解决了这个难题,建立了裂缝性低渗透油藏稳态渗流的理论模型。可利用该模型来研究天然裂缝参数对产量及压力的影响规律,也可研究人工裂缝参数对压裂直井产量的影响规律。该模型具有对裂缝参数考虑较全、简单实用的特点。计算实例从理论上说明了低渗透油藏中,油水井部署在天然裂缝发育处开发效果较好的原因。

关键词: 裂缝, 低渗透油藏, 稳态流动, 模型

Abstract: Natural fractures that distribute randomly in the reservoir are different from the hydraulic fractures that connected with oil and water wells. Using the steady-state productivity equation, a conventional method, is difficult to theoretically deal with the randomly dispersed natural fractures. This paper presents the equivalent flowing resistance method, a theoretical model of steady-state flow for naturally fractured low-permeability reservoir, by which this issue can be solved through research of effects of natural fracture parameters on production rate and formation pressure as well as effects of hydraulic fracture parameters on fracturing well production rate. This model is characterized by simple and practical application with fully considering fracture parameters. The case study shows the reason that for low permeability reservoir, oil well and water injection well should be spaced where natural fractures are developed in order to reach better production response.

Key words: fracture, low-permeability reservoir, steady-state flow, theoretical model

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