Introduction

It is a system engineering that can protect reservoir and prevent from damage throughout oilfield exploration and development. In order to evaluate the reservoir protection, we developed the evaluation equipment. It can simulate dynamic damage on core under downhole condition and measure permeability simultaneously. In addition, it can obtain the extent and depth of damage on core caused by fluid in the well. It needs one core throughout the experiment.

Application

1. can run dynamic damage test on core under downhole condition, including temperature, pressure and return velocity of annulus mud;
2. can measure heterogeneity of core and obtain the extent and depth of damage caused by fluid in the well on core and not damage its original structure and characteristics;
3. can measure different parameters of core permeability before and after being damage and it helpful to optimize drilling fluid and completion fluid;
4. applied to research o