The major factors influencing the performance of CO_2 foam fracturing fluid including foam mass,formation temperature,pressure,thickener,acidic crosslinker were researched,and the performance of CO_2 foam fracturing fluid was evaluated.

Laminar flow of foam fracturing fluid in fractures;

Study on the rheology of dry foam fracturing fluid using power-law (PL) model and modified power-law (PL) model

The rheology mechanism of foam fracturing fluid was studied by Eulerian-Eulerian two-phase fluid method with the gas phase being treated as 'granular'.

The fact that lacking of characteristic knowledge on CO2-foam fracturing fluid and friction computation methods has been the major problem constringes the application for CO2-foam fracturing fluid in the oil field.

Numerical investigation on 3-D fracture propagation and temperature field in CO_2 foam fracturing;

The foam fracturing technology is an important procedure for enhancing the hydrocarbon recovery from low-pressure,low-permeability and water sensitive formations.

This paper has estimated the engineering geologic features of Penglai zhen formation in Luodai gasfield of West Sichuan, and carried out feasibility assessment on foam fracturing in Luodai gasfield.