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December 2015 Issue

Falcon ROV Aids
West Africa Ops

The Saab Seaeye Falcon ROV is undertaking a range of tasks for Perenco Oil at their Gabon operations in West Africa, including pipeline and jacket surveys, rig assistance and FSO inspection. It has also been deployed with a diving team to remove debris from the seabed, ready to clear the approach for the arrival of a rig. Later, the Falcon was sent down to check the position and security of spudcan penetration in the sand.

The Falcon is a small ROV with five powerful thrusters for precise maneuverability and steadiness in strong cross-currents while undertaking precision tasks and observations. Its distributed intelligent control system, with each device on the vehicle having a microprocessor, allows a choice of tools and sensors to be easily added or changed.


Statoil to Explore
Off Mozambique

Statoil has, together with partners, submitted a winning bid on the A5-A block offshore Mozambique in the fifth competitive bidding round. The Eni-led partnership will subsequently enter into negotiations with the authorities.

The A5-A block is located in the Northern Zambesi basin in the Angoche area about 1,500 km north of the capital Maputo. The block covers an area of 5,145 sq. km in water depths ranging from 200 to 1,800 m.

The minimum work program includes seismic and three commitment wells.


Positive Appraisal Results
For Anchor Discovery

Chevron Corp. has done a successful appraisal of the Anchor discovery in the Lower Tertiary Wilcox Trend.

“The positive results of our appraisal work at Anchor indicate a significant discovery of potentially hub-class scale,” said Jay Johnson, executive vice president of upstream at Chevron.

The original Anchor discovery well, located in Green Canyon Block 807, approximately 140 mi. off the coast of Louisiana in 5,180 ft. of water, was drilled in late 2014 to a depth of 33,750 ft. and encountered 690 ft. of net oil pay.

Appraisal drilling began in June 2015 and recently found 694 ft. of net oil pay. To date, Chevron has confirmed a hydrocarbon column of at least 1,800 ft. in the Lower Tertiary Wilcox reservoirs at Anchor. Complete appraisal of the field will require further delineation wells and technical studies.


Coretrax Wraps Up
Decom Contract

Coretrax has successfully completed an extensive three-year decommissioning contract with Hess Corp. for the first designated abandonment campaign of its kind. The project began in 2012, involving 30 well abandonments at the FFFA and IVRR fields in the U.K. North Sea.

As part of this abandonment campaign, Coretrax successfully ran 45 bridge plugs and cement retainers, including some with a drillable brush. Due to extensive section milling operations required on the project, Coretrax provided its BOP cleaning and swarf recovery string to remove swarf from ram cavities and protect the blowout preventer (BOP). In some cases, up to 40 kg of swarf was recovered per run.


Gulf Navigation Maritime
To Support Zora Gas Field

Gulf Navigation Maritime, a part of Gulf Navigation Holding PJSC, signed an agreement with Dana Gas, a Middle East private-sector natural gas company, to provide complete logistic, transportation, marine and passenger/crew handling services for the Zora Gas Field project.

Dana Gas is currently engaged in the development of gas production in the Zora Gas Field located 30 km from Sharjah, United Arab Emirates, and the Ajman coastline at a depth of 82 ft. It will produce and supply gas to Sharjah via an onshore processing facility.

Under the terms of agreement, Gulf Navigation Maritime will provide marine and port services, including a dedicated fully manned crew boat/guard vessel for patrolling the offshore jacket, close coordination with the port authority for vessel registration and berthing plan, vessel brokerage, and diving operation permits. It will also undertake customs clearance for air and sea shipments from vendor base to the Hamriyah Free Zone and vice versa, as well as immigration clearance process such as vessel registration, crew change and visa arrangements.


MOU for UKCS
Decom Solutions

Further signifying the increasing awareness of U.K. Continental Shelf (UKCS) decommissioning, Decom North Sea (DNS), the representative body for the offshore decommissioning industry, and the Oil and Gas Innovation Centre (OGIC) have announced a memorandum of understanding (MOU).

The MOU articulates both parties’ wish to support operators, contractors, SMEs and a range of other stakeholders to develop the safe and cost-effective offshore decommissioning solutions required by operations and government.

At an aggregate estimated cost in excess of £50 billion (in 2014 prices), UKCS decommissioning presents a fertile environment for the advancement of technology, which also provides the opportunity to allow the U.K. to develop a world-renowned decommissioning capability.


Lancaster Discovery
Field Development

Costain is involved in a project which the Oil and Gas Authority has lauded as “significant” for the future of the U.K. Continental Shelf (UKCS). The company has worked closely with Hurricane Energy to produce a number of field development options for their Lancaster Discovery, West of Shetland.

Globally, naturally fractured basement reservoirs are prolific oil producers, but they represent a new opportunity for the UKCS.

Over the last 24 months, the Costain team, in collaboration with Hurricane, has refined the original concepts to define an initial development concept based around an early production system (EPS). The primary objective of the EPS is to gain additional knowledge of the reservoir and minimize capital exposure, while providing an economic return on the capital invested.

The EPS concept takes into account the current low oil price environment, which has necessitated the development of novel solutions and cost-saving initiatives.


2015:  JAN | FEB | MARCH | APRIL | MAY | JUNE | JULY | AUG | SEPT | OCT | NOV | DEC
2014:  JAN | FEB | MARCH | APRIL | MAY | JUNE | JULY | AUG | SEPT | OCT | NOV | DEC

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Sea Technology is read worldwide in more than 110 countries by management, engineers, scientists and technical personnel working in industry, government and educational research institutions. Readers are involved with oceanographic research, fisheries management, offshore oil and gas exploration and production, undersea defense including antisubmarine warfare, ocean mining and commercial diving.