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中南大学学报(自然科学版)

Journal of Central South University

第46卷    第12期    总第256期    2015年12月

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文章编号:1672-7207(2015)12-4592-10
高含水老油田注采连通判别及注水量优化方法
杨超,许晓明,齐梅,李彦兰,韩洁

(中国石油勘探开发研究院,北京,100083)

摘 要: 探讨注采连通关系及注水量合理利用的问题。鉴于当前描述注采连通关系、优化注水量的电容电阻模型未考虑生产井间干扰和注采井合理影响范围,通过引入生产井间干扰因子和注采井影响系数矩阵对其进行改进。改进后的注采连通新模型判别注采动态连通性,并通过构建注水效率与连通系数的关系式,提出一种注水量优化调整新方法。从连通系数和注水效率2方面对新方法的可靠性进行验证,并在冀东油田高5断块进行应用。研究结果表明:与现有方法相比,新方法计算结果与生产实际数据更接近,历史拟合时间短,快捷省时,只需要现场的地面生产数据,基本数据较易获取。

 

关键字: 电容电阻模型;注水驱油效率;注采连通性;注水量优化;井间干扰

Injector-producer connectivity identification and water injection optimization of mature oil fields in high water cut period
YANG Chao, XU Xiaoming, QI Mei, LI Yanlan, HAN Jie

PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China

Abstract:The rational utilization of water injection and connectivity relationships between injectors and producers were discussed. Considering that the widely used CRM (capacitance resistance model), which could estimate connectivity relations and optimize water injection efficiency, did not take into account the reasonable influence radius and inter-well interference between producers, modifications were made about the basic CRM by introducing interference constant and influence coefficient matrix. Based on calculated results of revised CRM and the new purposed expression between water injection efficiency and connectivity coefficients, a new approach for optimal adjustment of water injection was presented. Credibility and usability of the new method were verified from connectivity coefficient and water injection efficiency. The new method was preliminarily applied in GAO5 fault block of Jidong Oilfield. The results show that compared with the existing methods, the new method has the following advantages: the results are closer to actual production results; history matching is fast and timesaving; the field production data are the basic data which are easy to be obtained.

 

Key words: CRM (capacitance resistance model); water flood efficiency; injector-producer connectivity; water injection optimization; inter-well interference

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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