Axial displacement comparative analysis of the tubing string in the gas injection wells.;

Phase state characteristic after gas injection into formation oil based on computational method;

The numerical simulation study on gas injection development for the low-permeability reservoir of Chun-107-fault new block;

On the basis of experiments,the factors which influenced the shape of PA12 double-lumen catheter cross-section in process of extrusion,including the die temperature,the screw rotational speed,the tractive rate and the volumetric gas flow were analyzed.

In this dissertation, gas flow controller system was designed.

The under-balanced drilling technology was successfully applied in FP1-1 well by using an oil pipe in a vertical well to carry out annular air injection, so as to achieve rapid and steady injection and provide great protection of coal seams as well as stability of well wall.

Security of casing string in gas injection well altered from water injection well;