Murphy Oil Malaysia recently completed a highly successful, rigless intervention campaign using Welltec services. Not only did the operation allow immediate production from a “lost” well, but it also saved the time and cost of a rig based sidetrack. The end result is expected to add 20 MMscf/d into the production portfolio.
In the first well, the drift run hung up at 945 ft MD when trying to perforate the well. Based on previous experience, the cause was suspected to be part of a cement wiper plug. This was pushed down to a nipple profile at 4,314 ft MD, leaving it still 1,690 ft above the perforation depth. After only minutes of milling, the Well Miller made it through the plug, which allowed the Well Tractor® to push it down to 6,398 ft MD, approximately 380 ft below the target perforation interval. Thereafter the well was perforated and put on production.
In the second well, a poor cement job had made the primary target zone inaccessible and left an obstruction inside the tubing. With pressing rig commitments there was insufficient time to fix the problem, leaving the well temporarily abandoned and a candidate for future sidetracking. Based on the success of the first well, the Well Tractor and Well Miller were used to push the obstruction from 400 ft to 2,132 ft MD , meeting the objective to prepare the well for sidetracking.
However, it was decided to attempt to push the obstruction as far as possible. Using the Well Tractor and Well Miller the well was cleared well beyond the sidetrack target depth to an eventual Hold Up Depth of 8,743 ft MD. Getting this far down the production string allowed access to two of the three reservoirs in this well, which could now be completed for production rather than scheduled for a sidetrack workover.
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Grenland Group, a full-service engineering, procurement and construction company based in Norway, has been awarded a contract for two PetroFlame® burner booms for the semisubmersible drilling and intervention rig, Island Innovator.
“We are proud to be awarded this contract by Island Offshore, one of the leading providers of well intervention services. This contract proves once again our competitiveness in the global market”, says Erik Taule, EVP Solutions at Grenland Group.
“This taylor-made PetroFlame® system combines our extensive experience of design, fabrication and construction. The design will be done at our office in Sandefjord, and fabrication will be subcontracted to Jutal, China, and closely followed up by our Shanghai office“, says Jan-Erik Totland, Product Manager at Grenland Group.
The PetroFlame® burner booms supplied by Grenland Group is designed for permanent installation on vessels or mobile offshore drilling units, and for the purpose of well testing. The PetroFlame® keeps the gas flare and burner head in safe distance from the vessel structures to achieve low level of heat radiation.
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- Grenland Group Wins FEED Contract for Gullfaks B Rig Offshore Norway
- Norway: Grenland Group Gets LOI from FMC Technologies Kongsberg on Kirinskoye Development
- Norway: Grenland Group Receives LOI on Katla Project from FMC Technologies at Kongsberg
- Norway: Grenland Group Enters LOI with Samsung Heavy for Valemon Platform
- Norway: Island Offshore Charters Two Vessels to Schlumberger (mb50.wordpress.com)
- Norway: STX OSV to Build 4 PSVs for Island Offshore (mb50.wordpress.com)
- Norway: Subsea 7 Charters Island Intervention Vessel (mb50.wordpress.com)
Cal Dive International’s multiservice vessel Uncle John is currently undergoing an upgrade to the vessel’s dynamic positioning and derrick systems, which will enable the vessel to perform light well intervention work in water depths up to 3,500 feet.
Uncle John is DNV Classified multipurpose vessel with, 16-man Comex dive system with hyperbaric lifeboat capable of carrying 16 divers and 3 crews.
The upgrade is part of the Company’s original capital expenditure budget for 2011. Completion of this upgrade is anticipated during the middle of the first quarter of 2012. Following this upgrade and upon completion of 45 days of work for a major oil and gas operator, the Uncle John will commence a P&A Support Contract for two deepwater wells for Apache Corporation . This awarded work is expected to keep the Uncle John utilized late into the second quarter of 2012.
Quinn Hébert, President and Chief Executive Officer of Cal Dive, stated, “We are pleased to announce the upgrade of the Uncle John and the award of our first light well intervention contract by Apache utilizing the vessel’s upgraded capability. We are excited about the opportunities available to Cal Dive in entering this new market segment where we have received significant interest from our customers. This will allow Cal Dive to further diversify our market reach beyond our traditional diving and integrated construction services.”
Cal Dive International, Inc., headquartered in Houston, Texas, is a marine contractor that provides an integrated offshore construction solution to its customers, including manned diving, pipelay and pipe burial, platform installation and platform salvage services to the offshore oil and natural gas industry worldwide with a fleet of 29 vessels, including 19 surface and saturation diving support vessels and 10 construction barges.
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