低渗透裂缝性油藏调剖选井无因次压力指数决策方法

doi:10.7623/syxb201305014

石油学报 ›› 2013, Vol. 34 ›› Issue (5): 932-937.DOI: 10.7623/syxb201305014

低渗透裂缝性油藏调剖选井无因次压力指数决策方法

冯其红¹, 王森¹, 陈存良¹, 徐春梅², 陈荣环², 刘保彻²

1. 中国石油大学石油工程学院山东青岛 266580;
2. 中国石油长庆油田公司油气工艺研究院陕西西安 710018

收稿日期:2012-12-15 修回日期:2013-04-01 出版日期:2013-09-25 发布日期:2013-08-01
通讯作者: 王森,男,1986年5月生,2009年毕业于中国石油大学(华东)石油工程专业,现为中国石油大学(华东)博士研究生,主要从事油气渗流理论与应用等方面的研究工作。Email:wangsena1@126.com
作者简介:冯其红,男,1969年6月生,1993年毕业于石油大学(华东)油藏工程专业,2004年获中国石油勘探开发研究院油气田开发工程专业博士学位,现为中国石油大学(华东)教授、博士生导师,主要从事油藏工程方面的教学和科研工作。Email:fengqihong@126.com
基金资助:
国家重大科技专项(2011ZX05013-005,2011ZX0524-002-002);教育部"长江学者和创新团队发展计划"(IRT1294);国家自然科学基金项目(No.51174222)和中央高校科研业务费专项资金项目(13CX06028A)资助。

A new decision method based on dimensionless pressure index for profile control of low-permeability fractured reservoirs

FENG Qihong¹, WANG Sen¹, CHEN Cunliang¹, XU Chunmei², CHEN Ronghuan², LIU Baoche²

1. School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China;
2. Oil & Gas Technology Research Institute, PetroChina Changqing Oilfield Company, Xi'an 710018, China

Received:2012-12-15 Revised:2013-04-01 Online:2013-09-25 Published:2013-08-01

摘要/Abstract

摘要：

从低渗透裂缝性油藏的特点出发,分析了将压力指数(PI)决策方法用于低渗透裂缝性油藏调剖选井时遇到的问题,并在PI值的基础上提出了一种新的组合参数——无因次PI值。在考虑启动压力梯度和裂缝影响的条件下利用分形几何方法推导了无因次PI值的物理意义,其与储层原始地层系数和当前地层系数的比值成正比,且无因次PI值越小,储层渗流能力增大得越多,存在优势通道的可能性越大,就越需进行调剖。最后在此基础上建立了低渗透裂缝性油藏调剖选井无因次压力指数决策方法,通过将该方法应用于长庆油田五里湾一区,证明了其有效性。

关键词: 低渗透, 裂缝性油藏, 调剖, 压力指数, 分形几何, 决策方法

Abstract:

Based on the characteristics of low-permeability fractured reservoir, the problems encountered when applying Pressure Index (PI) decision making technology to profile control of the reservoir are analyzed. And a new parameter—Dimensionless Pressure Index (DPI) is presented on the basis of PI. Moreover, the physical rationale of DPI is deduced with fractal geometry on condition that threshold pressure gradient and fractures are taken into account. DPI is found proportional to the ratio between the initial and present formation conductivities of the reservoir. The smaller the DPI, the greater increment of reservoir seepage capacity, the more likely thief zone exists in the formation, thus the more the profile control is needed. Finally, a decision making technology based on DPI is put forward for low-permeability fractured reservoir, and applied to Wuliwan No.1 Block in Changqing oilfield.

Key words: low-permeability, fractured reservoir, profile control, pressure index, fractal geometry, decision method

中图分类号:

TE357

冯其红, 王森, 陈存良, 徐春梅, 陈荣环, 刘保彻. 低渗透裂缝性油藏调剖选井无因次压力指数决策方法[J]. 石油学报, 2013, 34(5): 932-937.

FENG Qihong, WANG Sen, CHEN Cunliang, XU Chunmei, CHEN Ronghuan, LIU Baoche. A new decision method based on dimensionless pressure index for profile control of low-permeability fractured reservoirs[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(5): 932-937.

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低渗透裂缝性油藏调剖选井无因次压力指数决策方法

A new decision method based on dimensionless pressure index for profile control of low-permeability fractured reservoirs

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