摘要
大庆长垣东部三肇凹陷肇州油田直井—水平井联合开发区已逐步进入中高含水期,为实现精细注水调整需要进行合理注水强度研究。依据数值模拟计算出的开发指标,建立了9类连通关系下4种注水强度的综合含水率与采出程度关系曲线、采油速度与综合含水率关系曲线。通过设定水平井开发效果和经济效益界限,可以从2类曲线组中求取水平井的合理注水强度范围。水平井合理注水强度与连通情况关系较大:"薄注厚采"合理注水强度为3.8~18.0 m^3/m;"注采相当"合理注水强度在3.8 m^3/m以上;"厚注薄采"无法满足开发效果和经济效益界限要求,需措施改造。将此方法应用于肇5区块的注水调整,有效改善了区块开发效果。
The vertical-horizontal-well-combination developed blocks in Zhaozhou Oilfield of Sanzhao Depression in East Daqing Placanticline have gradually entered into the middle-high water cut stages, it is necessary to conduct the research on the reasonable water injection intensity to realize the fine water-injection adjustment. According to the calculated development indexes by the numerical simulation, four types of the comprehensive water cut and production rate relations are established for the water injection intensity under the conditions of nine kinds of the connectivities. By setting the boundaries of the development effects and economic benefits of the horizontal wells, the reasonable water intensity range of the well is achieved with the help of two types of the curve. The reasonable water injection intensity has rather close relationship with the connected conditions： the reasonable intensity of ＂Thin-layer injection and thick production＂ is from 3.8 to 18.0 m^3/m; that of ＂ Equivalent injection and production＂ is over 3.8 m^3/m; ＂Thick-layer injection and thin production＂ can not meet the requirements of the development effects and economic benefits, so the reforming countermeasures are needed. This method was applied to the adjustment of the water injection in Block Zhao 5 and has effectively improved the development effects of the block.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2015年第4期92-96,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
国家重大专项"大庆长垣特高含水油田水驱开发效果评价及优化方法研究"(2011ZX05052-12)
关键词
油藏数值模拟
直井-水平井联合
合理注水强度
开发调整
reservoir numerical simulation
vertical and horizontal wells＇ combination
intensity
development adjustment of the block. reasonable water injection
作者简介
郭军涛，男，1989年生，工程师，硕士，从事油气田开发方面的研究工作。E—mail：guojuntao@petrochina．com．cn
