An attempt to stimulate low permeability oilfield by CO_2 fracturing

This paper introduces the principle and features of CO_2 fracturing stimulation technology,analyzes the postfracture response of the first 3 test wells in Putaohua reservoir of Yongle oilfield.This is a new stimulation technology for low production and low permeability oilfield.In recent years,the newly developed technology of CO_2 fracturing stimulation has achieved good symptom in the process of low permeability reservoir stimulation.The test had been conducted in 3 wells in Putaohua reservoir of Yongle oilfield in 2004 and obtained good result.