渤海陆相砂岩油田高含水期整体加密调整技术现状及展望  

Current status and prospect of integrated infilling adjustment technologies for high water cut period of continental sandstone oilfields in Bohai Sea

作　　者：杨庆红 张章 李廷礼 YANG Qinghong;ZHANG Zhang;LI Tingli(CNOOC China Limited,Tianjin Branch,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《中国海上油气》2024年第4期119-130,共12页China Offshore Oil and Gas

基　　金：中国海洋石油有限公司“十四五”重大科技项目“海上油田大幅度提高采收率关键技术(编号:KJGG2021-0501)”部分研究成果。

摘　　要：渤海在生产陆相砂岩油田探明原油地质储量占渤海总探明原油地质储量超80%,目前主力油田均已进入高含水开发期,受海上平台丛式井网开发方式制约,持续稳产难度加大。为进一步改善油田开发效果、提高油田采收率,近10多年来攻关形成了油藏精细描述、剩余油定量评价、注采井网加密调整、纵向注采细分等4项整体加密调整关键技术,建立了两种海上陆相砂岩稠油油田立体井网开发模式,应用于绥中36-1、秦皇岛32-6等20多个在生产油田整体加密调整,共实施开发井超过1000口,主力油田采油速度提高1.5倍以上、采收率提高10个百分点以上。本文系统总结了渤海油田高含水期整体加密调整关键技术和实践认识,并对今后特高含水期开发技术发展进行了展望,对推动海上油田中长期持续稳产和高效开发具有重要借鉴意义。The proven geological crude oil reserves in the continental sandstone oilfields in the Bohai Sea account for more than 80%of the total proven crude oil reserves in the Bohai Sea.At present,the main oilfields have entered the development stage of high water cut,which is restricted by the development mode of cluster well pattern on offshore platforms,making it more difficult to maintain stable production.In order to further improve development effects and enhance oil recovery of the oilfields,four key integrated infilling adjustment technologies have been developed over the past 10 years,including fine reservoir description,quantitative evaluation of remaining oil,infilling adjustment of injection-production well patterns,and longitudinal injection-production subdivision,and two three-dimensional well pattern development modes have been established for heavy oilfields of offshore continental sandstone.The integrated inflling adjustment technologies were applied to SZ36-1,QHD32-6,and more than 20 production oilfields,involving a total of more than 1000 development wells.As a result,the production speed of the main oilfields was increased by more than 1.5 times,and the oil recovery was increased by more than 10 percentage points.The key integrated infilling adjustment technologies and practical understanding of the Bohai Oilfield were systematically summarized,and the direction of development technologies for the ultra-high water cut period in the future was predicted.The results of this paper have important reference significance for promoting the sustainable stable production and efficient development of offshore oilfields in the medium and long term.

关 键 词：渤海油田 高含水期 加密调整 水平井 开发模式 

分 类 号：TE343[石油与天然气工程—油气田开发工程]