CO₂ 吞吐在断块低渗透油藏的应用

The Principle and the Character of Carbon Dioxide Huff and Puff and It’s Application in Low Permeability Reservoirs

任福生¹ 刘艳平¹ 段春凤² 郭保卫³ 刘广东³

1.胜利石油管理局孤岛采油厂，2.中原油田分公司采油二厂，3. 中原油田分公司采油五厂

Gudao Oil Production Plant , Shengli Oilfield Co. Ltd, SINOPEC, Shandong 257509 , P. R. China

垦利油田作为一个复杂的小断块油田,中低渗封闭小断块占有相当比重,地层能量低,边底水不活跃,采出程度低,如何提高断块低渗透油藏的采收率是一项很重要的工作。介绍了CO₂ 吞吐原理、条件并分析其应用效果。结果表明,CO₂ 吞吐在改善中、低渗断块油藏开发方面展示了广阔的应用前景。

Kenli Oilfield ,as a complicated fault-block oilfield with a large proportion of small bounded fault blocks with medium low permeability , is short of stratum energy , and the oil production rate is lower ,so it is one of the important subjects of oilfield development how to enhance oil recovery of the low-permeability fault block reservoirs. In which edge water and bottom water is not full of activity. The paper mainly presents the mechanism and the character of carbon dioxide huff and puff , and analyzes the effect of the application in Kenli Oilfield. It is proved that the technique reveals wide application prospect for developing reservoirs with mediumlow permeability.