Principal Features

1. can simulate downhole condition and be applied to dynamic damage test of core when adopted different types of drilling fluid. It does not necessary to take off core during testing to avoid damage once more;
2. based on the multi-point core holder test, it can evaluate the extent and depth of damage on core caused by fluid in the well and optimize drilling fluid and completion fluid which can protect reservoir;
3. can measure the relationships between the following parameters and time, including dynamic filter loss, spurt loss volume, filtration rate and filtration coefficient;
4. can input, set and control the operating parameters, record the testing time, flow rate, pore volume, working time, working pressure, confinement pressure, permeability and obtain the relation curves between effective permeability and pore volume, effective permeability and time, pressure and time.

Application

1. applied to evaluate the damage on core caused by fluid in the well;
2. applied to research on the water shut-off effect and blockage mechanism;
3. applied to evaluate the effect of stimulation treatment such as fracture and acidization;
4. applied to evaluate heterogeneity of core permeability.