苏北不同类型油藏CO_(2)驱开发模式及经济效益评价  

CO_(2) flooding development models and economic benefit evaluation of different types of reservoirs in Subei basin

作　　者：吴公益 赵梓平[1] 吴波[1] WU Gongyi;ZHAO Ziping;WU Bo(Taizhou Oil Production Plant,Sinopec East China Oil and Gas Company,Taizhou,Jiangsu 225300,China)

机构地区：[1]中国石化华东油气分公司泰州采油厂,江苏泰州225300

出　　处：《油气藏评价与开发》2021年第6期864-870,共7页Petroleum Reservoir Evaluation and Development

基　　金：中国石化科技攻关项目“洲城中高渗高含水油藏CO_(2)复合驱油技术”(P17056-6)。

摘　　要：CO_(2)驱技术在国外应用广泛,而国内应用规模相对较小,重要因素是其技术和经济指标备受考验。以近年苏北小断块油藏CO_(2)驱项目为例,分析了CO_(2)吞吐、低渗油藏同步气驱、气顶驱、气水交替、中高渗油藏CO_(2)复合驱等开发模式,及其经济效益与影响因素。苏北实践表明CO_(2)驱项目经济效益与注入成本和换油率密切相关,各开发模式经济效益有一定差异但总体较好,特别是低渗低含水油藏通过气顶驱及气水交替驱效果较佳。CO_(2)-EOR has been widely used in foreign countries,but rare in China because of technical and economic factors.Taking the CO_(2)flooding project of the small fault block reservoir in Subei basin as an example,the development modes of huff-n�puff,synchronous gas injection,gas cap flooding,gas-water alternation,CO_(2)combined flooding in medium and high permeability reservoirs are summarized,and economic benefits and influencing factors are analyzed.The practice in Subei basin shows that the economic benefits of CO_(2)flooding projects are closely related to the injection cost and utilization of CO_(2).The economic benefits of various development models are different but overall are good,which play a better performance in low permeability and low water cut oil reservoirs through gas cap flooding and gas-water alternate flooding.

关 键 词：低渗油藏 中高渗 CO_(2)驱 CO_(2)复合驱 苏北 效益评价 

分 类 号：TE341[石油与天然气工程—油气田开发工程]