Introduction

The true triaxial core holder is used to detect permeability variation in HTHP and the true triaxial stress state, can simulate dynamic pollution process during positive and negative differential pressure, balanced drilling, evaluate the extent and depth of damage on core and prevent stress effect caused by setting up coal core many times and make coal reservoir pollution and filtration test integrate. In addition, it supplies a good evaluation method for researching on cleat permeability, multiphase permeability under different stress states and the changing law of mechanics parameters.

Key Technical Parameters

1. operating pressure: 16MPa,25 MPa,32 MPa,50 MPa;
2. operating temperature: room temperature ~ 150 ℃;
3. size: 50×50×50mm;
4. medium: all kinds of oils, water, weak acid, alkali, salt, etc.