海上中轻质油藏提液策略研究与应用  

Research and application of liquid enhancement strategy for offshore medium-light oil reservoirs

作　　者：温慧芸 WEN Huiyun(State Key Laboratory of Natural Gas Hydrates,Beijing 102209,China;CNOOC Research Institute Co.,Ltd,Beijing 100028,China)

机构地区：[1]天然气水合物国家重点实验室,北京102209 [2]中海油研究总院有限责任公司,北京100028

出　　处：《油气井测试》2022年第5期64-69,共6页Well Testing

基　　金：中海石油(中国)有限公司科研课题“天然气水合物国家重点实验室2022年自主前瞻基础研究课题”(2022-KJYFPT-SHW)。

摘　　要：为解决油田中、高含水阶段面临的产量递减快,控水稳油难等问题,采用油藏工程方法和数值模拟方法相结合的手段,对中轻质油藏M油田提液可行性、提液时机、提液幅度等几个方面进行研究。结果表明:中轻质油田低含水阶段、中含水阶段和高含水阶段的可采储量约占油田最终可采储量的1/3,适合进行全寿命提液;M油田初期提液的时机为综合含水达到40%,合理提液压差为1.5~2.0 MPa;后期提液的时机为综合含水达到80%,合理提液压差为2.0~2.5 MPa。经在M油田前期和后期提液实例应用,取得了较好的效果,为中轻质油田的提液技术提供了理论依据。In the stages of development with medium and high water cut,oilfields often suffer from the problems of rapid production decline and difficulty in controlling water and stabilizing oil.By integrating reservoir engineering method with numerical simulation method,a research was conducted on M oilfield,a medium-light oil reservoir,from the aspects such as feasibility,timing and extent of liquid enhancement.The results show that the recoverable reserves in the low water-cut,medium water-cut or high water-cut stage of the medium-light oilfield account for about 1/3 of the ultimate recoverable reserves,allowing the feasibility of lifecycle liquid enhancement.The liquid enhancement in M oilfield can be performed at the time when the total water cut reaches 40%and the reasonable pressure difference ranges from 1.5 MPa to 2.0 MPa in the early stage,or at the time when the total water cut reaches 80%and the reasonable pressure difference ranges from 2.0 MPa to 2.5 MPa in the late stage.Application in M oilfield reveals good results of liquid enhancement in the early and late stages,which provide a theoretical basis on liquid enhancement in medium-light oilfields.

关 键 词：中轻质油藏 全寿命提液 提液机理 提液可行性 提液时机 提液幅度 无因次采液指数 无因次采油指数 

分 类 号：TE357[石油与天然气工程—油气田开发工程]