Improved Influx Management

Managing Influxes With Less Back Pressure

Combining two MPD methods, Controlled Mud Level and Surface Back Pressure in a Dual system with a Closure Device in the Riser enables two approaches for managing an influx while applying less pressure from surface. 

Influx Management With a Subsea Pump Module

When closing the Riser Closure Device, the influx can be controlled by adjusting the speed of the Subsea Pump Module (SPM): With the SPM as controller less pressure at the Shoe is generated enabling larger size influxes to be handled without breaking down the formation.

Influx Management With Added Hydrostatic Pressure

Drilling with Controlled Mud Level involves using a higher density fluid. Bypass the SPM after the Riser Closure Device is closed and get additional pressure from a longer column of fluid. Less back-pressure is required enabling larger size influxes to be handled with lower pressure at the Shoe and on surface lines and equipment.