大涝坝凝析气藏循环注气注采参数优化研究

Optimization of cyclic gas injection parameters in Dalaoba Condensate Gas Reservoir

张艾 黄杰 贺蕾

Zhang Ai Huang Jie He Lei

中国石化 西北油田分公司 雅克拉采气厂, 新疆库车 842017

Yakela Gas Production Plant, SINOPEC Northwest Company, Kuqa, Xinjiang 842017, China

大涝坝凝析气藏在衰竭式开发过程中,受反凝析和水侵的双重影响,产能快速下降,为提高采收率,开展了循环注气开发.注采参数是影响循环注气采收率及经济效益的主要指标.针对大涝坝这类开发中后期进行循环注气的水驱凝析气藏,该文通过数值模拟方法,开展注采比、注采方式等注采参数优选,优化循环注气方案,保证了循环注气开发的效果.

Due to retrograde condensate and water invasion effect in the failure type development of the Dalaoba Condensate Gas Reservoir, there was a rapid decline in gas well productivity. In order to enhance recovery, a cyclic gas injection strategy was adopted. During the cyclic gas injection production period, the injection-production parameters were the key index to influence gas recovery and economic benefits. For the water-drive gas condensate reservoirs which were in the middle and late stages of development in the Dalaoba area, numerical simulation was conducted in this paper to optimize the parameters including injection-production mode, injection-production ratio, etc. The purpose of this research was to improve the effect of cyclic gas injection production by optimizing parameters and scheme.

https://doi.org/10.11781/sysydz2014S1085