石油化工高等学校学报Issue(4)：52-56,5.DOI:10.3969/j.issn.1006-396X.2014.04.012
浅层断块油藏水平井CO 2吞吐增油技术
CO2 Huff and Puff Technology on Horizontal Well of Shallow Fault-Block Reservoir
摘要
Abstract
Horizontal well is the main development way of Gaoshangpu shallow fault-block reservoir.During the process of horizontal well development edge water and bottom water usually channel,finger,flood so that the water cut goes up quickly. After water cut is high,it caused well productivity decreasing,seriously affects the development effects of oil field.To solve this problem,the CO2 huff and puff technology was chose.The main principle was as follows.Under the condition of temperature and pressure,oil can dissolve CO2 quickly.CO2 can expand oil,change the physical property,decrease oil viscosity and interfacial tension between water and oil,increase dissolved gas drive energy then improve oil/gas recovery factor.Field application of 34 wells show that daily oil production increases from 1.72 t to 4.88 t and water cut decreases from 97.5% to 51.45%.The technology has obvious stimulation effect.关键词
水平井开发/浅层断块油藏/CO2 吞吐技术/增油机理Key words
Horizontal well development/Shallow fault-block reservoir/CO2 huff and puff technology/Stimulation mechanism分类
能源科技引用本文复制引用
刘怀珠,李良川,吴均..浅层断块油藏水平井CO 2吞吐增油技术[J].石油化工高等学校学报,2014,(4):52-56,5.基金项目
中国石油天然气集团公司重大专项“水平井控水技术研究与现场应用”(2008F-1506)。 （2008F-1506）
