Daily Archives: July 17, 2012

WWCS, DOF Subsea Conduct Subsea Services in US Gulf Of Mexico

Wright’s Well Control Services (WWCS) completed a riserless subsea plug & abandonment (P&A) using tubing to pull out of the hole from a Multi-Service Vessel (MSV) in 1,250’ WD in the Gulf of Mexico. DOF Subsea USA provided marine and subsea services. New tools where custom engineered specifically for this project and successfully deployed.

One of the initial challenges addressed by the WWCS team was the one-of-a-kind tree found at the site with an annulus monitoring valve at a 35° angle. After finding no Remotely Operated Vehicle (ROV) tooling on the market offering the ability to nipple down and up on a subsea flange, WWCS designed and built a new torque tool. The new tool unbolted the flange and bolted in a new flange with a 2” hot stab.

The next step was to design and build a hydraulic connector that would allow WWCS to pull away from a section that might have issues while leaving a modified Tree Running Tool (TRT) subsea. This connector was designed to engage and disengage a subsea Blowout Preventer (BOP) and lubricator for additional barriers as needed without time consuming trips to the surface to add and remove the TRT.

WWCS also modified a Tubing Hanger Pulling Tool (THPT) to pull tubing with a crane subsea. The tubing was removed with a bull string on the deck of the MSV with a ROV for guidance as the segments where pulled out one at a time. One of the MSV’s moonpools was used to run the coil string and the umbilical while tubing and casing were pulled from a secondary moonpool.

Steps in the plug & abandonment procedure included: setting six (6) 16.4 ppg Class H neat cement plugs, setting three (3) Cast Iron Bridge Plugs (CIBP), cutting and pulling 37 joints of 3½” tubing, cutting and pulling 750′ of 9⅝” casing, cutting and pulling 13⅜” casing, cutting and pulling 20″ x 30″ casing with a mechanical cutter below mudline (bml), flushing a 6″ pipeline of 3890 barrels (bbls) of fluid with a modified 4” connector, recovering the umbilical tension assembly (UTA) and pipeline end manifold (PLEM), and setting a modified plumbers plug and submar mats on the lines.

“This project was a great success for everyone involved at Wright’s Well Control Services,” said WWCS president David Wright. “In 30 days we successfully executed a very challenging subsea P&A utilizing four new subsea tools including a jumper to flush the pipeline that we designed and built while on location. I’m proud of our crew and support staff. The techniques and tools deployed on this job may change how subsea P&As are conducted going forward.”

“It was great to work with WWCS on this innovative subsea P&A project,” said Brent Boyce, vice president of operations at DOF Subsea USA. “The new tooling designed to flange and re-flange the subsea annulus monitoring system interfaced perfectly with our ROVs. We were able to remove and reinstall the device even at 35 to 45° angle.”

Wright’s Well Control Services offers comprehensive surface and subsea offshore services for clients in the Gulf of Mexico. Wright’s specializes in cost effective rigless applications including patent-pending hydrate remediation, subsea BOP and plug & abandonment technologies. WWCS was founded in 2006 by David Wright who has 25 years of offshore and onshore engineering experience including work at Halliburton, The Red Adair Company and ATP. Wright’s is a privately held company employing 75 people with corporate offices in Humble (Houston), Texas and an operations facility is Lake Charles, Louisiana.

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Gulf of Mexico: Helix Energy Makes New Discovery

Helix Energy Solutions Group announced an oil discovery at the Danny II exploration well at the Bushwood Field located in Garden Banks Block 506, approximately 145 miles offshore from Galveston, Texas. The Danny II exploration well encountered more than 70 feet of high quality net pay.

Johnny Edwards, President of Energy Resource Technology GOM (ERT), a wholly-owned subsidiary of Helix, stated, “Preliminary data from down-hole test tools confirmed oil in the Danny II well with over 9,500 psi of bottom-hole pressure. Additional testing to determine the composition of the reservoir fluids is on-going. We will provide an update on Danny II after completion.”

The Danny II exploration well was drilled to a total depth of approximately 14,750 feet, in water depths of approximately 2,800 feet. The well is currently being completed and most likely will be developed via a subsea tie back system to the 70% owned and operated East Cameron Block 381 platform located approximately 31 miles to the north in 370 feet of water. First production from Danny II is expected in the fourth quarter of 2012.

Helix holds a 50% working interest in the exploration well jointly with Deep Gulf Energy LP (Operator) and Deep Gulf Energy II, LLC (both First Reserve Corporation and Quintana Capital backed entities), who own the other 50% working interest.

Helix Energy Solutions Group, headquartered in Houston, Texas, is an international offshore energy company that provides key life of field services to the energy market as well as to its own oil and gas business unit.

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Second Well Follows Guyane Oil Discovery

Northern announces that as anticipated by Shell France on June 23rd, The Stena Drillmax ICE drillship commenced operations on the GM-ES-2, the second well on the Guyane Maritime permit on Friday 6th July. GM-ES-2 follows up on the Zaedyus oil discovery in late 2011, which encountered 72 metres of net oil pay in two turbidite sand systems successfully proving that the Jubilee play is mirrored across the Atlantic from West Africa.

The potential of this well was indicated by the Chief Executive of Shell France, Patrick Romeo who stated that, “drilling should last three months and Shell hopes to discover a reserve of at least 300 million barrels of oil” as reported by Dow Jones Newswires. Also, Tullow’s Exploration Director, Angus McCoss was quoted in the New York Times as having said the field could be larger than Jubilee, with 1 billion barrels or more of recoverable oil.

The partner interests in offshore Guyane are:

Shell 45.0% and operator

Tullow 27.5%

Total 25.0%

Northpet Investment 2.5% (Northern owns a 50% equity interest in Northpet Investments)

Derek Musgrove, Managing Director of Northern stated:

“We are pleased to be following up on the highly successful Zaedyus discovery so quickly. Through this project shareholders may benefit from this potentially very high impact event without any great cost exposures. I look forward to updating shareholders on progress.”

In accordance with the AIM Rules – Guidance for Mining and Oil & Gas Companies, the information contained in this announcement has been reviewed and signed off by the Exploration and Technical Director of Northern, Mr. Graham Heard CGeol.

FGS, who has over 35 years experience as a petroleum geologist. He has compiled, read and approved the technical disclosure in this regulatory announcement. The technical disclosure in this announcement complies with the SPE/WPC standard.

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