BROUSSARD, La. – Delmar Systems, Inc. recently completed the 100th subsea tree installation using the patented Heave Compensated Landing System (HCLS).
Delmar has incorporated the use of the HCLS since June 2002 when it installed its first subsea tree for Shell’s Na Kika Development in Mississippi Canyon in a water depth of approximately 6000’. This installation marked the first time a subsea tree was installed using an anchor handling vessel.
Since then, the Broussard, La.-based company has used the HCLS to install not only subsea trees but has also installed and recovered various types of production and support equipment, including well jumpers, manifolds, control pods, mooring connectors, wellhead adapters, and ROV tooling.
“The use of the HCLS minimizes rig critical path installation activities, increases utilization of existing long-term chartered installation vessels, and accelerates development timelines,” said James Soliah, Delmar’s Subsea Manager. “The HCLS provides for a safe, efficient, and cost-effective method for subsea component installation.”
Delmar is a licensed user of this patented technology owned by Shell Oil Company (US Patent # 5,190,107).
The effectiveness of this method is derived by reducing the heave motions at the mudline from sea conditions on surface from the installation vessel, according to Matt Smith, Delmar’s Vice President of Operations.
“The system provides ‘automatic’ motion compensation, eliminating any tuning or adjustments due to changes in weather conditions. Heave motion is negligible, whether the equipment is being installed in lightly choppy seas or long period swells, thus allowing for a soft landing on the wellhead or seabed in a very controlled and accurate manner,” Smith said.
Installation activities have been carried out for numerous operators including: Anadarko Petroleum Corp.; BP; Dominion, ENI Petroleum Co., Inc.; ExxonMobil Corp.; Kerr-McGee Corporation; Mariner Energy, Inc.; Noble Energy, Inc.; Newfield Exploration; Petrobras America, Inc.; Pioneer Natural Resources Company; Remington Oil & Gas, Corp; and Shell Oil Company. The method is currently being used in the Gulf of Mexico and Angola.