摘要
针对双水平井SAGD常规蒸汽循环预热启动存在的蒸汽预热降黏慢、循环预热时间长、蒸汽消耗量大、井间动用不均衡等问题,采用室内实验和数值模拟相结合的方法,对溶剂辅助SAGD预热启动技术的原理与适用性进行了研究。研究结果表明:溶剂辅助SAGD具有缩短预热时间、减少蒸汽用量、实现井间均匀连通的效果,适用于水平段井间渗透率不小于500 mD、含油饱和度不小于60%、50℃原油黏度为2.0×10^4~10.0×10^4mPa·s的超稠油油藏。形成的油藏筛选条件为其他稠油油藏开展溶剂辅助SAGD启动技术提供了筛选依据。
In order to improve the low viscosity reduction rate of steam preheating,long preheating cycle,large steam consumption,uneven interwell producing degree and other problems in the dual horizontal-well SAGD with conventional steam cycle preheating,laboratory test and numerical simulation were combined to understanding the technical principle and adaptability of solvent-assisted SAGD preheating startup technology.Research indicates that the solvent-assisted SAGD is featured by small preheating cycle,low steam consumption and uniform interwell connectivity,which is applicable for the super-heavy oil reservoirs with permeability between lateral sections not less than 500 mD,oil saturation not less than 60%and the crude oil viscosity from 2.0×10^4 mPa·s to 10.0×10^4 mPa·s at 50℃.The reservoir screening principles could provide certain reference for other heavy oil reservoirs to implement solvent-assisted SAGD startup technology.
作者
杨兆臣
于兵
吴永彬
王丽
张家豪
佟娟
姜丹
张崇刚
Yang Zhaochen;Yu Bing;Wu Yongbin;Wang Li;Zhang Jiahao;Tong Juan;Jiang Dan;Zhang Chonggang(PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;PetroChina Research Institute of Petroleum Exploration and Development,Beijing 100083,China;PetroChina Liaohe Oilfield Company,Panjin,Liaoning 12400,China)
出处
《特种油气藏》
CAS
CSCD
北大核心
2020年第4期67-72,共6页
Special Oil & Gas Reservoirs
基金
国家科技重大专项“稠油/超稠油开发关键技术”(2016ZX05012)
中国石油科技项目“稠油注溶剂开采新技术研究”(2016B-1403)。
关键词
溶剂辅助
SAGD
启动阶段
井间连通
超稠油油藏
solvent-assisted
SAGD
startup stage
interwell connectivity
heavy oil reservois
作者简介
杨兆臣(1971-),男,高级工程师,1996年毕业于大庆石油学院地球物理勘探专业,2008年毕业于中国石油大学(北京)地质工程专业,获硕士学位,现主要从事稠油、超稠油开发实验及油藏工程方面的研究工作。
