Unsteady seepage model for low permeability reservoir with threshold pressure gradient;

Numerical model considering threshold pressure gradient for stress-sensitive low permeability reservoir;

At present,the study of threshold pressure gradient in home and abroad is only theoretical,and the experimental study is a little.

Influence of start-up pressure gradient and stress sensitivity on productivity of low-permeability gas reservoirs;

Numerical simulation of pinnate horizontal multilateral well for coal-bed gas development in consideration of start-up pressure gradient;

Numerical simulation of productivity of fractured gas well with start-up pressure gradient considered;

Experiment on starting pressure gradient of oil and water two phases flow in low permeability core.;

A new solution and application of starting pressure gradient in ultra-low permeability reservoir;

An experimental study on starting pressure gradient of fluids flow in low permeability sandstone porous media;

The effects caused by oil viscosity and actuating pressure gradient on the variation regularity of productivity index and fluid productivity index vs water cut have been analyzed, and the variation regularity of the productivity index of various microfacies vs producing pressure drop has been studied.

The relationship between the actuating pressure gradient and the cores air permeability,mobility,immobile water saturation and cores depth is analyzed.

Because it has generally low porosity and permeability characteristics,actuating pressure gradient,slippage effect,water blocking effects and other factors affect the flow characteristics.

Non-Darcy flow quasi-threshold pressure gradient experimental study for low permeability soft rock;