
第39卷第2期 2017年
2月
能源与环保
China Energy and Environmental Protection
特低渗油藏压裂优化研究
唐灿,喻高明,卢雨蒙,翟明昆
(长江大学石油工程学院,湖北武汉430100)
Vol.39
No.2
Feb.
2017
摘要:针对低渗透油截地质特征复杂、开采难度大、产能低等间题,以N油田为例,采用油蔗数值模拟技术,建立了油藏整体压裂数值模拟模型,在历史拟合的基础上,对比研究了N油田压裂前后效果,发现油田压裂后可有效提高产能。研究了随着平面压裂规模的增大,采出程度和含水率的变化规律,优选出最佳的裂缝参数;纵向上设计不同的层系组合压裂开发方案,提出适合N油田的压裂方案。对间类低渗一特低渗储层的开发有指导意义。
关键词:石油勘探:低渗油藏;压裂技术;压裂规模;压裂数值模拟
中图分类号:TE357
文献标志码:A
文章编号:10030506(2017)02005204
Fracturing optimization research on ultra-low permeability oilfield
Tang Can,Yu Gaoming,Lu Yumeng,Zhai Mingkun
(College of Petroleum Engineering of Yangtze Uriversity,Wuhan430100,Chine)
Abstract: Aimed at the problems of complex geological conditions,mining difficulties,and low product for low permeability and extra-low permeability reservoir,taking N oilfield as an example, using reservoir numerical simulation technology ,a numerical simulation mod-el of the whole reservoir fracturing was establishied. Based on the history match,the authors stimulated the development effectiveness of oilficeld before and after fracturing, discovered oil field can effectively improve production after fracturing, They studied the change rule of recovery percent and water cut with the increase of plane fracturing scale, and optimal preferred fracture parameters, In vertical direc tion,a corresponding reasonable program of fracturing were determined through abundant numerical calculations and optimizations of dif-ferent fracturing project of various combinations of layers. It has some degree of guiding significance for the development of the same kind of low permeability and extra low permeability reservoirs.
Keywords : oil exploration;extra-low permeability reservoir;fracturing technology ;fracturing scale;numerical simulation of fracturing
引言 0
低渗透油田已成为世界现在和未来油气田开发的重点和难点,该类油藏具有地质特征复杂、开采难度大、产能低和经济效益差的特点,对低一特低落储层的开发主要以压裂改造,改善地层渗透状况为主,但是压裂成本高、有效周期短,故需对压裂开发方式进行优化研究。
截至2010年,我国探明的低渗透油裁的地质储量达到120×10°t。据不完全统计,2009年、2010
年、2011年的石油新增储量中,低渗透和特低渗透分别占78%、63%、78%,低渗、特低渗天然气储量分别为92.4%、68%、97%。而且低渗透、特低渗透油藏在新增储量中所占的比例表现出越来越大的趋势。由此可见,低渗、特低渗油田开发已是未来石油勘探开发的主流。研究低渗储层及其开发技术,降低开发成本,有效利用低渗油气资源,是保障我国油气资源稳步发展的关键1-5]。
低渗油藏提高产能的关键在于扩大增产处理范围,在远并地带创造有利的供液通道,大幅度提高油
DOI;10. 19389/j, cnki. 1003 0506.2017. 02. 010
收稿日期:2016-09-18;责任编辑:郭海霞
作者简介:唐灿(1992一),女,期北删州人,硕士研究生,研究方向为油数工程及数值模拟。
引用格式:唐灿,喻高明,声雨蒙,等.特低渗油藏压裂优化研究[J].能源与环保,2017,39(2);52-55
Tang Can,Yu Caoming,Le Yumeng,et al. Fracturing optimisation research on ultra-low pemeability oilfield[J]. China Energy and Environ mental Protection,2017,39(2) :52-55
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