新疆石油地质

›› 2015, Vol. 36 ›› Issue (3): 1-1.doi: 10.7657/XJPG20150312

• 论文 •    

延长油田低渗油藏长岩心二氧化碳吞吐参数优化

黄小亮1，贾新峰2，周 翔2，郑善平3，严文德1，袁迎中1   

  1. (1.重庆科技学院 石油与天然气工程学院,重庆 401331;2.加拿大里贾纳大学 工程系,里贾纳 S4S0A2,加拿大;3.中国石油 新疆油田分公司 采油一厂, 新疆 克拉玛依 834000)
  • 出版日期:2019-01-01 发布日期:1905-07-13

Optimization of Long Core CO2 Huff and Puff Experimental Parameters in Low Permeability Reservoir, Yanchang Oilfield

HUANG Xiaoliang1, JIA Xinfeng2, ZHOU Xiang2, ZHENG Shanping3, YAN Wende1, YUAN Yingzhong1   

  1. (1.College of Oil and Gas Engineering, Chongqing University of Science and Technology, Chongqing 401331, China; 2. Department of Engineering, Regina University, Regina S4S0A2, Canada; 3. No.1 Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China)
  • Online:2019-01-01 Published:1905-07-13

PDF

281

摘要： 以延长油田低渗油藏长岩心为实验样品，研究CO2吞吐中周期注入量、焖井时间、压力衰竭速度、注气方式和注气速度等对低渗油藏开发效果的影响。实验分析得出：CO2吞吐过程中，第一周期在整个CO2吞吐过程中起关键作用；第一周期应当焖井到压力稳定再开井生产，之后的吞吐周期无需等压力稳定后再开井生产；适当低的注气速度能够较好地克服油藏非均质性的影响，减弱气体指进给油藏开采带来的负面影响。

Abstract: By experiment of long core samples from low permeability reservoir in Yanchang oilfield, the effects of cyclic injection volume,soak time, pressure decline rate, gas injection process and gas injection rate on low?permeability reservoir development by CO2huff?n?puff process were studied. The results show that the first cyclic CO2 huff?n?puff is the key of production, its soak time should keep stable pressure followed by opening well for production, after which the production can be conducted without keeping stable pressure at any cycle.And appropriate low gas?injection rate may well overcome the influence of the model heterogeneity, hence reducing the negative impact of gas fingering on reservoir exploitation

中图分类号: