Introduction
The rock physics lab has been built since 2015 and by now there is a SCMS-F multi-parameter measure system with several auxiliary apparatuses. In this lab, the main works are focus on the measurement and analyses of ultra-elastic velocities, porosity, resistivity and permeability in well-consolidate and unconsolidated rock samples.
The SCMS-F system is manufactured by the state key lab of marine geology in Tongji university and oil and gas reservoir geology and exploitation in Southwest petroleum university. It is designed to measure multi rock physical parameter in high accuracy with an auto-control system. It can be used to simulating gas hydrate in high pressure and low temperature. Furthermore, the rock physical parameters, such as ultra-elastic velocities, porosity, permeability and resistivity, can also be measured for well-consolidate and unconsolidated core samples in high pressure and temperature. The following parts are the key parameters used in core sample tests.
1. For well-consolidate core samples：
Temperature：room temperature ～150℃ relative error ：±1℃
Confining pressure：1～90MPa relative error：±1.5%
Pore pressure：0～10 MPa relative error：±0.25%
Core diameter：25mmCore length：3～7cm
The range for porosity measurement：0.1~30PU relative error：±0.25PU
The range for gas-induced permeability measurement：
~2000（
µm2）
relative error：±15%
The range for fluid-induced permeability measurement：
~1000（
µm2）
relative error：±5%
The range for resistivity measurement：0.1~1000Ω·m
relative error：±5%
The range for longitudinal wave ：150~1000µs／m relative error：±2%
The range for shear wave：150~1000µs／m relative error：±5%
2. For unconsolidated samples：
Temperature：-6℃～room temperaturerelative error：±1℃
Axial Pressure：1～40MParelative error：±1.5%
Pore Pressure：0～40 MParelative error：±0.25%
Core diameter：6cmCore length：0～2cm
The range for gas-induced permeability measurement：
~1000（
µm2）
relative error：±15%
The range for fluid-induced permeability measurement：
~1000（
µm2）
relative error：±5%
The range for resistivity measurement：1~1000Ω·mrelative error：±5%
The range for longitudinal wave：>=800m/s relative error：±2%
The range for shear wave：>=450m/s relative error：±5%
Contact Person:Jiqiang Ma
Email: ma_jiqiiang@tongji.edu.cn