Your supplier of high pressure laboratory instruments

Your supplier of high pressure laboratory instruments

ROCLAB Rock compressibility test system

ISRM suggested method

The fully automated ROCLAB system performs at in-situ temperatures, pore and bulk volume compressibility measurements of rock specimens under either hydrostatic stress, triaxial stress or uniaxial strain control. The apparatus consists of a controlled temperature pressure vessel which accommodates various loading platens with different diameters and three servo-controlled syringe pumps to respectively control the pore, radial and axial pressures.  A diametral extensometer is utilized for radial strain measurement during compressibility tests while radial deformations are obtained with three LVDT sensors. An in-vessel strain-gaged load cell provides a direct reading of the axial force applied to the specimen.



ISRM recommendations

Maximum pore pressure

100 MPa

Maximum axial pressure

100 MPa

Maximum confining pressure

100 MPa


Ambient to 150°C (300 F)

Specimen diameter

1 inch, 30 mm and 1.5 inches

Specimen length

up to 4 inches

Wetted parts

Stainless steel or Hastelloy

Power supply

110-220 VAC, 50/60 Hz

Air requirement

100 psi


Include in-vessel strain sensors for uniaxial-strain compressibility tests

Simulates actual reservoir production stress path

Accounts for inelastic behavior of reservoir rock

Measures compaction directly from axial strain

Multifunctional system

Video presentation:


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