Installation, retrieval, and subsequent workovers of subsea oil and gas wells require control systems to provide functionality of Christmas trees and associated running tools. Depending on the installation or workover scenario, Christmas tree control is required to varying degrees, considering the stage and type of operations.
Common industry practice for retrieval and installation of Christmas trees has been with a surface-based workover control system and an open-water umbilical. This personnel-intensive method also requires a large deck spread. Depth and current conditions can also impact the ability to effectively and safely deploy an open-water control umbilical.
The Octopoda RWOCS System is a multipurpose system, developed to simplify well access, well intervention and work over operations from any type of vessel.
With the use of a Octopoda RWOCS skid, all the operational control equipment is fitted inside a skid and mounted under the ROV, thus no additional deck spread is needed than what is already being used by the ROV system – making it easy to move the system between installations as needed.