The Indigenous Microbial Flooding Technology is successfully used in Kongdian Oilfield, which would serve as an example to EOR development of old oilfields in high water cut stage.

• 本源微生物采油技术在孔二北断块的成功应用对国内处于高含水阶段老油田进一步提高采收率具有一定借鉴意义。