海上带凝析气顶的边底水油藏开发策略——以我国海上X油田H油藏开发为例  

Development Strategies of Offshore Edge-bottom-water Reservoirs with Condensate Gas Cap——Case Study from H Reservoir in X Oilfield of East China Sea

作　　者：宋春华 张远[2] 

机构地区：[1]中海石油(中国)有限公司上海分公司,上海200030 [2]长江大学地球科学学院,湖北武汉430100

出　　处：《石油天然气学报》2014年第12期187-189,193,共4页Journal of Oil and Gas Technology

基　　金：中国海洋石油总公司"十二五"综合科研项目资助

摘　　要：带凝析气顶的边底水油藏由于油气水关系复杂，开采难度大，容易出现油、气、水互窜，导致凝析油和原油的损失。对于这种复杂的油藏，不同的开采技术政策对油气采收率影响较大。以我国东部海域X油田 H油藏开发为例，在对气顶底水油藏的开发机理研究的基础上，结合海上油气田开发特点，提出带凝析气顶的边底水油藏开发策略：利用天然能量，先期以采油为主，后期兼顾采气；采用水平井开发，生产压差控制在1～1.5M Pa ，纯油区开采4～5a后封水平段油层，开采上部顶气。It was difficult to develop edge-bottom-water reservoir with condensate gas cap because its complex relations of oil and water,which would result in channeling of oil,gas and water,and loss of condensate oil and crude oil.Therefore,different development strategies had huge influence on the oil and gas recovery efficiency of such complex reservoir.In this paper,by taking H Reservoir in X Oilfield in East China Sea for example,development strategies of offshore edge-bottom-water reservoir with condensate gas cap are proposed based on the research of development mechanism of bottom-water reservoir with gas cap and characteristics of offshore oil and gas fields.The strategies are that the natural reservoir energy should be fully used for mainly producing crude oil at the earlier stage and gas production is combined in the late period.Horizontal well is recommended with production pressure difference controlled in 1~1.5MPa,Sealing oil layer of horizontal well section should be sealed after 4~5 years of production in the net oil region and the upper gas layer is produced.

关 键 词：海上油气田 凝析气顶 边底水油藏 开发策略 油气并举 水平井开发 

分 类 号：TE349[石油与天然气工程—油气田开发工程]