井筒管流与地层渗流耦合的注水井分层流量调配方法  

ADJUSTMENT OF RESPECTIVE LAYER FLOW RATE IN INJECTION WELL THROUGH COUPLING OF WELLBORE PIPE-FLOW AND STRATURM FILTERING FLOW

作　　者：杨文军[1,2] 卢德唐[3] 李颖川[1] 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]中国石油勘探与生产分公司采油采气工艺处,北京100011 [3]中国科学技术大学石油与天然气研究中心,安徽合肥230026

出　　处：《大庆石油地质与开发》2009年第3期79-83,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金（10672159）及国家重大基础研究“973”（2006CB705805）联合资助.

摘　　要：油田注水井井下分层注水量的调配工作传统上都是通过钢丝绳作业采用“试凑法”反复测调来实现，为解决传统方法存在的问题提出了一种理论方法用于指导注水井分层调配，可以大幅度降低测调工作强度，缩短施工时间，提高配注精度，提高注水井分层测调效率。注水井分层注入涉及到复杂的流体力学计算，整个过程是一个井筒管流、水嘴节流与地层渗流的耦合流动。在井筒采用柏努利方程描述井简管流，采用Navi.Stocks（简称N-S）方程计算水嘴节流，以均质无限大地层为例计算地层渗流，得出了在不同水嘴尺寸下的各层流量衰减规律，为注水井分层流量调配提供了科学依据。The adjustment of respective layer flow rate in injection wells is realized conventionally by repetitious measurements of cut-and-try method during wireline operation. Herein this article, a new theory has been proposed in reference to the respective layer flow rate adjustment and solve the problems in conventional methods, according to and through which, the measuring workload could be greatly reduced, operation time could be shortened, the injection proration preciseness could be enhanced and the measuring efficiency could be promoted. The respective layer injection involves with complicated fluid dynamics computation, the whole process of which is actually the coupling flowing process of wellbore pipe-flow, throttled flow and stratum filtering flow. Bernoulli Equation is adopted to describe wellbore pipe-flow and Navi-Stocks equation is used to calculate the throttled flow, while the computation of stratum filtering flow is under homogeneous infinite formation conditions, as a result, the declination rules of respective layers under water nozzles of different sizes are concluded, which could be support the adjustment of respective layer flow rate in injection wells.

关 键 词：流量调配 井筒管流 水嘴节流 地层渗流 

分 类 号：TE357.61[石油与天然气工程—油气田开发工程]