Journal of Petrochemical Universities
  Journals
  Publication Years
  Keywords
Search within results Open Search
Please wait a minute...
For Selected: Toggle Thumbnails
Enhancing Super Extra Heavy Oil Recovery by Using High Temperature Resistant Enhanced Foam System
Wang Chunzhi,Li Zhaomin,Li Songyan,Li Binfei,Zhang Chao,Wang Fei
Abstract534)      PDF (4608KB)(435)      
After multiple rounds of steam huff and puff processes, problems of excessive steam injection pressure, a large heat loss, a small sweep range of steam, and steam channeling arise, thus severely affecting the effective utilization of the oil reservoir. To solve these problems, one dimensional and three dimensional (3D) physical simulation tools were used to study the plugging performance of high temperature composite foamsby adding tanning extract and alkali lignin. The influence of reservoir temperature, salinity of formation water, and injection methods was investigated. The experimental results show that the foam can produce a synergistic effect with both the gel systems, indicating that the gel increases the stability of the foam. The foam can transfer more gel into the high permeability formation, thus efficiently controlling the foam. The 3D physical simulation experiments indicate that both the systems enhance the recovery of heavy oil reservoir and reduce its moisture content significantly using steam injection. The method involving tannin extract foam and steam injection increased the recovery by 20% compared to the foam involving only steam injection. The method involving alkali lignin foam and steam injection increased the recovery by 11%.
2016, 29 (1): 14-20. DOI: 10.3969/j.issn.1006-396X.2016.01.004