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国内首次注天然气驱油技术日前在河南中原油田试验成功,7月份即可正式进入生产阶段。以油藏类型多、埋藏深、构造复杂著称的河南中原油田,目前有三分之一以上的地质储量为低渗、特低渗透油藏,对这部分储量,目前的注水工艺技术不能满足开发要求,主要依靠天然能量开发,采收率仅能达到15%-20%,二次采油开发效果极差。如何开发深层低渗,特低渗透油藏,提高油田采收率,既是油田面临的一大难题,也是油田三次采油增产稳产的潜在力量。
For the first time in China, natural gas flooding technology was successfully tested in the Zhongyuan Oilfield in Henan Province. It can officially enter the production phase in July. At present, more than one third of the geological reserves in Henan Zhongyuan oilfield, which is characterized by multi-type, deep burial and complex structure, are low permeability and ultra-low permeability reservoirs, and the current waterflood technology can not meet the requirements for development Requirements, mainly rely on natural energy development, recovery rate can only reach 15% -20%, secondary recovery of oil production is very poor. How to develop deep permeability and ultra-low permeability reservoirs and improve oil recovery is not only a big challenge for oilfields, but also a potential force for tertiary oil recovery and stable production.