第25卷第1期 2017年3月
北京石油化工学院学报
Journal of Beijing Institute of Petrochemical Technology
文章编号：1008-2565(2017)01-0009-05
气田水回注井可注量计算方法陈林，苏静，彭嘉，王亚辉，王赢（中国石油西南油气田公司川中油气矿，四川遂宁629000）
Vol. 25No.1 Mar.2017
摘要：为避免气田水回注过程中由于注入量太大引发井简完整性破坏和发生地层审漏，开展了气田水回注可注量评价研究。通过建立注人流体一套管一井壁一地层耦合的有限元力学分析模型进行注水井井筒受力分析；利用现代试井分析理论中的最优化拟合方法拟合注水过程中井底流压数据并获取注人流体波及半径，结合注人层段河道砂体展布确定波及面积；根据物质平衡原理计算可注量，形成气田水高压回注可注量评价方法，以L地区气田水回注井可注量评价为例进行分析，该方法考虑的因索客观全面，可以为气田水回注精细化管理提供定量指标和依据
关键词：可注量；气田水；安全：回注指标
中图分类号：TE341
文献标志码：A
DOl:10.12053/j.issn.1008-2565.2017.01.003
ACalculationMethod of Water Injection Volume
forReinjectionGasWell
CHEN Lin, SU Jing+ PENG Jia, WANG Yahui, WANG Chu(Central Sichuan OilGas Field of Petro China Southuest Oil and Ga.
Field Com pany, Suining, Sichuan 629000, China)
Abstract: In order to avoid the destruction of wellbore integrity and formation leakage caused by the overload of water reinjection in gas field, the researchers carried out the quantity evaluation of gas field water injection. The injected fluid casing and borehole and formation coupling finite element mechanics analysis model was established to analyze the water injection wellbore stress. The optimal fitting method in the modern well testing analysis theory was adopted to predict the flowing pressure data in the water bottom hole and acquirethe injected fluid spreading radius. which was combined with the injected layer channel sand body distribution to determine the affected area, According to the material balance principle,the amount of water reinjection can be calculated, which contributes to forming the evaluation method of high pressure gas field water injection. In the case of evaluating water injection volume for reinjection gas well in the L area the proposed method considers factors comprehensively and objectively, and can provide a
quantitative index and basis for the fine management of gas field water reinjection. Key words: injection volume; gas field water; safety; reinjection index
安全环保地回注深部地层是油气田产出水的处理方式之一，对于低渗储层通常采取高压注人方式
增加注人能力。地层水注人地层后依靠井筒完整性屏障确保注入水安全的封闭在注人层中[1]，如果注
收稿日期：2016-09-04
基金项目：国家科技重大专项（2011ZX05015—003—005）；国家科技重大专项（2011ZX05047）
作者简方数据983—），男，博土高级工程师，主要从事油气田开发生产，安全环保管理与研究工作，E-mail：flyfree0001@aliyun.com。