GMASS ( Gas Management & Separation System ) is a downhole gas separator used to separate the gas from liquid when two phase fluids are used, enhancing equipment reliability and performance, particularly with PDM’s, by minimising the amount of gas that passes through the motor, which in turn maximises performance and minimises cost.
The GMASS system was originally designed to be used in underbalanced operations (drilling milling and jetting). The downhole gas separator is placed above the Motor or Jetting Tool and separates the gas from liquid phases in a nitrified fluid.
This reduces the volume of gas passing through the BHA preventing damage to motors (drilling and milling) and increasing the impingement force of jets (jetting) while maintaining an underbalanced condition in the annulus.
The system is comprised of two (2) components, a Gas Management Module and a Gas Separation Module.