边底水稠油油藏水侵规律与开发技术对策研究  

Study on water invasion rule and development technical countermeasures of the edge and bottom water heavy oil reservoir

作　　者：任伟伟 REN Weiwei(Shengli Oilfield Dongsheng Jinggong Petroleum Development Group Co.,Ltd.,Dongying Shandong 257000,China)

机构地区：[1]胜利油田东胜精攻石油开发集团股份有限公司,山东东营257000

出　　处：《石油化工应用》2023年第11期58-61,67,共5页Petrochemical Industry Application

摘　　要：太平油田主力含油层系为馆陶组,探明地质储量2872×10^(4)t,为一大型的潜山披覆构造带上的强边底水稠油油藏,但含水率上升快,储层易出砂,注汽热采和化学堵水效果不佳。为改善区块的开发效果,提出了转降黏复合开发的技术对策。首先,通过小尺度网格数值模拟研究了边底水稠油油藏的剩余油分布规律以及水平井水侵规律,在室内实验筛选出降黏剂的基础上,提出了“降黏+新井整体转流线”和“降黏+调堵局部转流线”两种技术对策,并分别优选井位进行了矿场试验,取得了较好的试验效果,为边底水稠油油藏开发效果的改善提供了参考。The main oil-bearing layer of Taiping oilfield is Guantao formation,with 28.72 million tons of proven reserves and it is a heavy oil reservoir in a large buried-hill covering structure belt with strong edge and bottom water energy.However,during the development,there exist serious problems including quick water cut rise,easy sand production and poor effect of thermal production and chemical water plugging.In order to improve the development effect,viscosity reduction combined switching method is investigated.First,the residual oil distribution characteristics and horizontal well water invasion rules of the edge-bottom water heavy oil reservoir through small-scale grid numerical simulation.Then,efficient viscosity reducer was screened by laboratory experiments.After that,two technical measures of"viscosity reduction+integral streamline adjustment by new well"and"viscosity reduction+local streamline adjustment by water plugging and profile control"were proposed and relative field tests were carried out showing good results.It provides a reference for improving the development effect of heavy oil reservoirs with edge and bottom water.

关 键 词：边底水 稠油 小尺度网格 水侵规律 降黏复合 

分 类 号：TE345[石油与天然气工程—油气田开发工程]