二氧化碳压裂技术研究综述

Review on Carbon Dioxide Fracturing Technology

二氧化碳压裂技术具有低伤害、易返排等优点,特别适合低压低渗透、致密及水敏性强的复杂岩层,对油层污染严重、含水率较低的储层改造效果良好。本文从技术原理、压裂液制备、特点及应用方面介绍了二氧化碳泡沫压裂技术和二氧化碳干法压裂技术,并对超临界二氧化碳压裂技术和二氧化碳干法泡沫压裂技术两类比较特殊的二氧化碳压裂技术进行了简要介绍。

Carbon dioxide fracturing technology had the advantages of low damage and easy flowback. It was especially suitable for low pressure,low permeability,dense and strong water sensitivity complex reservoir. This technology had a good effect on formations with low water cut and serious oil pollution. In this paper,carbon dioxide fracturing and carbon dioxide foam fracturing technology were introduced from the aspects of technical principle,fracturing fluid preparation,characteristics and applications. In addition,two kinds of special fracturing technique including super critical carbon dioxide fracturing and liquid carbon dioxide foam fracturing were also introduced.