中国石油大学学报（自然科学版）2016，Vol.40Issue(2)：105-114,10.DOI:10.3969/j.issn.1673-5005.2016.02.013
一非凝析气与蒸汽混注水平井井筒流动传热特征
Transient fluid flow and heat transfer characteristics during co-injection of steam and non-condensable gases in horizontal wells
摘要
Abstract
In order to accurately predict the performance characteristics of non-condensable gas and steam along a horizontal wellbore, a semi-analytical flow model for the gas and steam mixture was developed based on thermal recovery string with the horizontal well and toe steam injection mode. The influences of various factors were considered, including perforation out-flow, pressure drops, thermal effect and phase behavior of the fluid injected. The model was solved using the methods of wellbore micro-control-element and node analysis. The flowing characteristics of the gas and steam mixture along the horizon-tal well were investigated, and the influences of different injection parameters were discussed. The results indicate that only the well segment near to the injection position can be effectively heated, which is in line with the results of field tests. Com-pared with the conventional steam injection, the injection of the combined gas and steam in horizontal wells has a better heat-ing effect,and different injection methods can have different heating effects. In field operations, it is suggested that the down-hole position of the injection pipe can be changed cycle by cycle in order to improve the heating effect in the reservoir.关键词
稠油油藏/水平井/蒸汽/非凝析气/传热Key words
heavy oil reservoir/horizontal well/steam/non-condensable gas/heat transfer分类
能源科技引用本文复制引用
东晓虎,刘慧卿,侯吉瑞,陈掌星..一非凝析气与蒸汽混注水平井井筒流动传热特征[J].中国石油大学学报（自然科学版）,2016,40(2):105-114,10.基金项目
国家科技重大专项(2011ZX05009-004-05) （2011ZX05009-004-05）
国家自然科学基金项目(51274212) （51274212）
