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Perdido - globaldrilling.com

Perdido World's DEEPEST OFFSHORE drilling and production platform . Supplement to Shell Perdido Contents Strategic Development 2 Developing the field 28. Subsea SYSTEM 6 The export system 34. the spar 15 Operations 40. the topsides 22 Company Profiles 46.. Custom Sponsored by: Supplement to: Publishing VP, PennWell Custom Publishing, Technical Writers, Contributing Photographers Production Manager, PennWell Petroleum Group Roy Markum Jerry Greenberg Travis Benson Dorothy Davis 1455 West Loop South, Suite 400. Houston, TX 77027 fax: Pramod Kulkarni Mike Duhon Managing Editor and fax: Principal Writer PennWell Corporate Headquarters F.

3 When shell acquired the ultra-deepwater leases for Perdido in 1996, the technology to develop them didn’t exist. there were other notable deepwater developments, of course.

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Transcription of Perdido - globaldrilling.com

1 Perdido World's DEEPEST OFFSHORE drilling and production platform . Supplement to Shell Perdido Contents Strategic Development 2 Developing the field 28. Subsea SYSTEM 6 The export system 34. the spar 15 Operations 40. the topsides 22 Company Profiles 46.. Custom Sponsored by: Supplement to: Publishing VP, PennWell Custom Publishing, Technical Writers, Contributing Photographers Production Manager, PennWell Petroleum Group Roy Markum Jerry Greenberg Travis Benson Dorothy Davis 1455 West Loop South, Suite 400. Houston, TX 77027 fax: Pramod Kulkarni Mike Duhon Managing Editor and fax: Principal Writer PennWell Corporate Headquarters F.

2 Jay Schempf Circulation Manager, Richard Cunningham Presentation Editor/Designer, 1421 S. Sheridan Rd., Tulsa, OK 74112. Chad Wimmer Tommie Grigg Lauinger, 1900 1988. Chairman, Frank T. Lauinger President/CEO, Robert F. Biolchini fax: We are building on a Shell's long history of successful deepwater projects. That combina- tion of experience and ability has allowed us to take this next big step.. 1000 ft Joe Leone Vice President, Developing Assets 2000 ft The second deepest drilling and production plat- form in the world is in 6,300 feet of water. The idea 3000 ft of bringing full functionality to waters nearly 8,000.

3 Feet deep and 200 miles from the onshore base is a big step for the industry.. 4000 ft Dale Snyder Perdido Project Manager 5000 ft Perdido demonstrates Shell's ability to com- bine creativity and technology to safely push back deepwater boundaries. This develop- 6000 ft ment paves the way for going beyond water depths of 10,000 feet.. Bill Townsley 7000 ft Perdido Venture Manager 8000 ft Deepest spar in the world / Deepest drilling and production facility in the world 9000 ft Deepest producing subsea well 10,000 ft 1. S h e l l P e r D I D O. Strategic Development on the Outer Edge When Shell acquired the ultra-deepwater leases for Perdido A workable plan in 1996, the technology to develop them didn't exist.

4 There I joined the project in January of 2005, says Dale Snyder, were other notable deepwater developments, of course. Perdido project manager. By the end of the year, we'd Each had pushed the boundaries of technology, but in solv- settled on a development concept and begun the front-end ing Perdido 's many technical challenges, Shell has opened engineering and design.. new frontiers for oil and gas exploration. Safety, cost and functionality were the project team's The Perdido oil and gas development covers a portion primary concerns. A large tension-leg platform common on of the geological formation known as the Perdido Fold Belt.

5 Other deepwater developments wouldn't work at Perdido The producing reservoirs lie within the Paleogene or Lower because of the extreme water depths. Whatever floats on the Tertiary zone, a portion of the Gulf of Mexico that has not surface has to support the weight of everything below, so in been produced before. The seabed there resembles a small Perdido 's case, just the weight of the mooring lines, risers and version of the Grand Canyon, including cliffs with near verti- other equipment hanging cal drops of up to 1,000 feet. from the platform would be The hub of the Perdido development is some 200 overwhelming.

6 Miles due south of Freeport Texas. The nearest neighbor is Engineers also had the Hoover-Diana platform, about 60 miles to the north. to design for the higher Shell began 3D seismic surveys on Perdido in 1998. The crushing pressures of depths discovery well was completed in 2002. Development drill- greater than 9,000 feet, ing began in 2007 and is scheduled to continue through and other environmental 2016. forces such as storm-driven There is a lot of courage in this story, says Bill Townsley, waves, hurricane-force Perdido venture manager. We purchased the Perdido leases winds and the Gulf of Mexi- in up to 10,000 feet of water at a time when the industry's co's strong loop currents.

7 Capability was barely 3,000 feet. One of our satellite well- The deeper you go, Dale Snyder, Perdido project manager heads will be installed at 9,627 feet. the bigger these structures S t r a t e g i c D e v e l o p m e n t o n t h e O u t e r Ed g e 3. S h e l l P e r D I D O. get unless you break the pattern, Snyder says. For Per- nomical, yet big and sturdy enough to contain all the drilling dido, we also have reservoirs that are atypical for the Gulf of and production equipment we needed to develop the field.. Mexico. Because of low reservoir pressures and the variety The Perdido concept design team wanted a central of our target zones, Perdido requires a lot of wells.

8 Platform with full drilling and production capability onboard. There are up to 35 wells in the Perdido development Before Perdido , the world's deepest water depth for such plan. Twenty-two are directly under the spar. A conventional a platform was 6,300 feet, but several emerging technolo- deepwater production system would require 22 risers with all gies, including direct vertical access to the wells (DVA) and a their associated bulk and weight. subsea boosting system allowed the engineering and design Economically, we just couldn't make that work, Snyder team to greatly reduce the size of the structure.

9 Says. It is very expensive to solve the technical problems We needed to be able to pump liquids from the seabed and operate things at extreme water depths. Beyond that, to the surface, Snyder explains. In shallower waters, if you build a mammoth structure, the cost of construction that's not a big issue, but when the water is a mile and a becomes prohibitive. For Perdido , we wanted a new kind of half deep, it takes a lot of pressure to move fluids up to the deepwater platform, one that was light enough to be eco- platform. Most new reservoirs have enough internal pressure to overcome the hydrostatic pressure above them and push fluids up the wellbore to the surface.

10 Perdido 's reservoirs are relatively low pressure, so we needed a boosting system.. The other significant challenge was the potential of form- ing hydrates an icy mix of water and natural gas that can easily clog flowlines. The solution was to separate gas and liquids on the seabed, then let the subsea boosting system push them to the surface, each through different lines. With that capability, the design team could comingle fluids from all the wells on the seafloor, before pumping it to the surface. It was part of the enabling technology. Instead of 22. production risers from 22 wells, they only needed five, and Photo provided by Noble Corporation with just five risers, Perdido could be a much smaller platform.


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