The RHSM-2A is a linear, dynamic HTHP swell meter from Rigchina. It is designed for testing and studying the reactivity of shales found on oil well drilling. It is equipped with a maximum pressure of 508 PSI, and maximum temperature of 250 F.
The aim is to utilize the information to predict and/or fix problems found by shale, thus reducing drilling dangers and charges resulting from these unexpected materials. Much focus has been given over the years to the improvement of chemical and mechanical tests and diagnostic methods, which can gauge the reactivity of shales.
The Rigchina's Linear Swell Meter aids in determining the shale hydration or dehydration by measuring the increase or decrease in length over time of reconstituted or intact shale core.