致密砂岩气藏水平井差异化开发效果评价——以鄂尔多斯盆地苏里格气田为例  

Evaluation of horizontal well differential development effect in tight sandstone gas reservoir: A case study of Sulige gas field,Ordos Basin

作　　者：程敏华[1] 孟德伟[1] 王丽娟[1] 江乾锋 王国亭[1] 赵蒙 CHENG Minhua;MENG Dewei;WANG Lijuan;JIANG Qianfeng;WANG Guoting;ZHAO Meng(Research Institute of Petroleum Exploration&.Development,Beijing 100083,China;PetroChina Changqing Oilfield Company,Xian,Shaanxi 710018,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油长庆油田分公司,陕西西安710018

出　　处：《中国矿业大学学报》2023年第2期354-363,共10页Journal of China University of Mining & Technology

基　　金：中国石油天然气股份有限公司“十四五”重大科技项目(2021DJ-1704)。

摘　　要：基于苏里格气田丰富的水平井静、动态资料,从储层基本地质特征入手,开展实钻水平井有效储层精细解剖及开发动态响应分析,提出块状集中发育、中薄层叠加及薄层孤立3种有效储层空间展布模式,建立水平井部署储层分类标准.基于水平井动态储量、泄流范围、初期合理产量、递减率等核心指标,建立水平井开发效果定量识别与划分标准.3类储层水平井动态储量分别为大于8×10^(7)m^(3),6×10^(7)~8×10^(7)m^(3),小于6×10^(7)m^(3);初期产量分别为6×10^(4),4×10^(4),2×10^(4)m^(3)/d;初期递减率分别为32.9%,35.0%,40.0%.文中建立动、静态结合水平井开发效果评价体系可支撑苏里格气田未来水平井优化部署.Based on the abundant static and dynamic data of horizontal wells in Sulige gas field,we carried out the fine description and development dynamic response analysis of the effective reservoir of the actually drilled horizontal wells and put forward three effective reservoir spatial distribution modes,which were block concentrated development,medium thin layer superposition,and thin layer isolation. We established the reservoir classification standard for the deployment of horizontal wells. Based on the core indexes such as dynamic reserves,drainage area,initial reasonable production,and decline rate of horizontal wells,the quantitative identification and division standard of horizontal well development effect were also established. The dynamic reserves of horizontal wells in three types of reservoirs are more than 8×10^(7) m^(3),6×10^(7)~8×10^(7) m^(3),less than 6×10^(7) m^(3),the initial outputs are 6 × 10^(4),4 × 10^(4),and 2 × 10^(4) m^(3)/d,and the initial decline rates are 32.9%,35.0%,and 40.0% respectively. The dynamic and static horizontal well development effect evaluation system established in this paper could support the optimal deployment of horizontal wells in Sulige gas field in the future.

关 键 词：致密砂岩气藏 有效储层空间结构 分类评价 水平井 开发指标 

分 类 号：TE329[石油与天然气工程—油气田开发工程]