Riser Gas Handling Guidelines (RG) - Stand-alone Chapter of the IADC Drilling Manual, 12th Edition (Revised) PDF

These guidelines are specifically designed to address the challenges associated with gas in the riser in deepwater rigs utilizing surface back-pressure (SBP) Managed Pressure Drilling (MPD) or installed riser gas handling (RGH) systems as described in the guidelines. The document provides practical recommendations for safely managing gas in the riser, offering enhanced operational capabilities and environmental protection.

The utilization of SBP MPD/RGH equipment radically changes riser gas handling in deepwater drilling. Without this equipment, gas in the riser events pose a severe risk, potentially leading to uncontrolled riser unloading and adverse consequences for personnel and the environment. However, with the introduction of SBP MPD/RGH equipment, operators now have the means to manage riser pressure and control gas expansion in a safe and controlled manner.