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Pieter Wybro Phones & Addresses

  • 622 Blue Iris Trl, Houston, TX 77079
  • 106 Townsend Mill Ct, Houston, TX 77094 (281) 492-9190
  • Galveston, TX
  • 411 Walnut St, Green Cv Spgs, FL 32043
  • Green Cove Springs, FL
  • 2607 Domineco Ln, Katy, TX 77450 (281) 492-9190
  • 581 Post Oak Rd, Bellville, TX 77418 (979) 865-8706 (979) 865-8822
  • Richmond, TX

Work

Company: Worley Position: Principal owner

Emails

Industries

Oil & Energy

Resumes

Resumes

Pieter Wybro Photo 1

Principal Owner

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Location:
411 Walnut St, Green Cove Springs, FL 32043
Industry:
Oil & Energy
Work:
Worley
Principal Owner

Business Records

Name / Title
Company / Classification
Phones & Addresses
Pieter G Wybro
Director, President
CP SEMI, INC
Business Services at Non-Commercial Site
2607 Domineco Ln, Katy, TX 77450

Publications

Us Patents

Ballast System For Tension Leg Platform

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US Patent:
6830413, Dec 14, 2004
Filed:
Nov 26, 2003
Appl. No.:
10/723212
Inventors:
Pieter G. Wybro - Houston TX
Terry Kryska - Bellville TX
Assignee:
Modec International, L.L.C. - Houston TX
International Classification:
B63B 3544
US Classification:
4051951, 405205, 114125, 114265
Abstract:
An apparatus and method for ballasting and de-ballasting a vessel having a hull with a plurality of watertight ballast compartments wherein each ballast compartment has an individual pump caisson extending vertically to the top of the hull, but the ballast/de-ballast system contains no valves within the hull. An external caisson is used to provide a source of seawater. Several submersible pumps are available for rigging into and out of the internal and external caissons and provide the ballast and de-ballast operations via an installed manifold system at the top of the columns. Venting of the ballast tanks may be accomplished through a connection to atmosphere near the top of the pump caissons.

Method Of Installation Of A Tension Leg Platform

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US Patent:
7044685, May 16, 2006
Filed:
Feb 27, 2004
Appl. No.:
10/789659
Inventors:
Pieter G. Wybro - Houston TX, US
Shukai Wu - Houston TX, US
Johannes J. Treu - Sealy TX, US
David E. Chaplin - Magnolia TX, US
Assignee:
Modec International LLC - Houston TX
Sea Engineering Associates, Inc. - Houston TX
International Classification:
E02D 29/09
E02B 17/08
US Classification:
405207, 4052231
Abstract:
A method and system for attaching a TLP to its tendons using pull-down lines to rapidly submerge the hull to installation draft while compensating for inherent hull instability during submergence and to provide motion arrest and aid in station keeping. The system includes tensioning devices mounted on the TLP, usually one for each tendon. Each tensioning device is equipped with a pull-down line which is connected to the corresponding tendon. The TLP hull is submerged to lock-off draft by applying tensions to the pull-down lines connected to the top of the tensions, or by a combination of applying tensions to the pull-down lines and ballasting the hull. As the tensioners take in pull-down line, the hull submerges, i. e. the draft increases. After lock-off, high levels of tension in the pull-down lines can be rapidly transferred to the connection sleeves by slacking the pull-down lines, thus allowing the TLP to be made storm-safe much faster than by prior art methods which require de-ballasting to tension the tendons.

Central Pontoon Semisubmersible Floating Platform

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US Patent:
7140317, Nov 28, 2006
Filed:
Jun 1, 2004
Appl. No.:
10/858120
Inventors:
Pieter G. Wybro - Houston TX, US
Chunfa Wu - Missouri City TX, US
Dagang Zhang - Houston TX, US
Assignee:
CPSP Ltd. - Houston TX
International Classification:
B63B 35/44
US Classification:
114264
Abstract:
A central pontoon semisubmersible floating platform for use in offshore applications has a hull configuration including vertical support columns, a central pontoon structure disposed inboard of the columns at a lower end thereof, and a deck structure supported at an upper end of the columns. The vertical columns and pontoon structure are constructed substantially of flat plate. The vertical columns are adjoined to the outer periphery of the central pontoon and have a transverse cross sectional shape with a major axis oriented radially outward from a center point of the hull, and a central vertical axis disposed a distance outward from the pontoon outer periphery. Risers can be supported on the inboard or outboard side of the pontoon and extended to the deck, and the structure can be anchored by mooring lines extending along the outboard face of the columns extending radially outward and downward from their lower ends.

Tendon For Tension Leg Platform

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US Patent:
7422394, Sep 9, 2008
Filed:
May 15, 2006
Appl. No.:
11/383350
Inventors:
James R. Koon - Katy TX, US
Pieter G. Wybro - Katy TX, US
Robert M. Kipp - Fulshear TX, US
Assignee:
Modec International, Inc. - Houston TX
Sea Engineering, Inc. - Katy TX
International Classification:
B63B 35/44
US Classification:
4052231, 405224
Abstract:
A tendon for mooring a tension leg platform having an uppermost pipe segment with a reduced diameter compared to at least one of the lower pipe segments. The tendon is watertight and sealed from the ocean environment, preferably filled with air at one atmosphere of pressure. One or more interior bulkheads may be included to divide the tendon into multiple compartments. The reduced outer diameter of the uppermost pipe segment provides reduced drag due to waves and currents and accommodates smaller tendon support buoys and vortex fairings, while the greater diameter of the lower pipe segment provides for increased tendon buoyancy.

Method Of Installation Of A Tension Leg Platform And Tendons Therefor

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US Patent:
7452162, Nov 18, 2008
Filed:
May 4, 2006
Appl. No.:
11/381610
Inventors:
Pieter G. Wybro - Houston TX, US
Shukai Wu - Houston TX, US
Johannes J. Treu - Sealy TX, US
David E. Chaplin - Magnolia TX, US
Assignee:
Modec International, LLC - Houston TX
Sea Engineering Associates - Houston TX
International Classification:
B63B 21/50
B63B 21/24
US Classification:
4052231, 405224
Abstract:
A method and system for attaching a TLP to its tendons using pull-down lines to rapidly submerge the hull to installation draft while compensating for inherent hull instability during submergence and to provide motion arrest and aid in station keeping. The system includes tensioning devices mounted on the TLP, usually one for each tendon. Each tensioning device is equipped with a pull-down line which is connected to the corresponding tendon. The TLP hull is submerged to lock-off draft by applying tensions to the pull-down lines connected to the top of the tensions, or by a combination of applying tensions to the pull-down lines and ballasting the hull. As the tensioners take in pull-down line, the hull submerges, i. e. the draft increases. After lock-off, high levels of tension in the pull-down lines can be rapidly transferred to the connection sleeves by slacking the pull-down lines, thus allowing the TLP to be made storm-safe much faster than by prior art methods which require de-ballasting to tension the tendons.

Riser Pipe Support System And Method

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US Patent:
20040182297, Sep 23, 2004
Filed:
Feb 27, 2004
Appl. No.:
10/788771
Inventors:
Pieter Wybro - Houston TX, US
Shukai Wu - Houston TX, US
International Classification:
B63B021/00
US Classification:
114/230100
Abstract:
A system and method for mating risers or umbilicals extending vertically or near vertically from the ocean floor to a floating offshore system such as a TLP or semi-submersible platform. The risers or umbilicals are suspended vertically above the vessel's keel and are supported laterally near the platform's keel by keel guides or riser receptacles positioned along the submerged perimeter of the vessel's hull, or within the hull by production riser slots disposed in the bottom of the hull. The keel guides or production riser slots each receive a keel joint assembly which laterally supports a riser or umbilical passing therein while providing a bearing surface for free vertical movement of the riser.

Deck Mounted Pull Riser Tensioning System

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US Patent:
20080031692, Feb 7, 2008
Filed:
Aug 3, 2007
Appl. No.:
11/890177
Inventors:
Pieter Wybro - Houston TX, US
Robert Kipp - Futshear TX, US
International Classification:
B63B 21/50
US Classification:
405224400
Abstract:
A deck mounted pull riser tensioning system for a floating platform or vessel includes at least two cylinders having a cylinder body supported at an upper or lower end on a deck or tensioner support structure of the platform or vessel in spaced apart relation with the cylinder rods extending downwardly from the cylinder body, or vice versa. A load structure member is connected to lower ends of the cylinder rods or bodies and has an opening therethrough for receiving a portion of a riser extending from the seafloor. A vertically adjustable riser attachment supported on the load structure member over the opening attaches to a portion of the riser extending through the opening and generally centrally between the cylinders. The cylinders pull upwardly on the load structure member to exert an upward tensioning force on the riser at the location of the riser attachment.

Method And Apparatus For Installing Tethers On A Tension Leg Platform

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US Patent:
51746875, Dec 29, 1992
Filed:
Feb 14, 1992
Appl. No.:
7/835543
Inventors:
David N. Dunlop - Houston TX
Pieter G. Wybro - Houston TX
International Classification:
E02D 574
B63B 2150
US Classification:
4052231
Abstract:
A method and apparatus for installing and tensioning mooring tethers or tendons between a subsea foundation and a tension leg platform. Load bearing porch members secured on the platform columns near the hull receive the threaded upper end of tethers which are engaged at their lower ends in the foundation. Movable hoists on the platform deck position the upper ends of the tethers on the porches. A platform arrester through which the hoist lines pass is connected with each hoist to move with the platform during vertical motions thereof and selectively engage the hoist lines to allow only downward movement of the platform arrester relative to the hoist lines. A motorized tether tensioning tool connected to each hoist line has a lock-down nut at its lower which releasably connects to the upper end of each tether such that the nut is vertically movable on the tether. The upper ends of the tethers are positioned on the porches and nominal constant tension is applied to the tethers while the platform arresters allow only downward movement relative to the hoist line until platform trim is within predetermined limits. The tensioning tools then run the nuts down on the tethers to engage them on the porches and apply tension in the tethers between the porches and foundation and are thereafter removed whereby tension loading in each tether is transmitted to the platform such that the total platforn tension load is equally distributed between the whole tether complement.
Pieter George Wybro from Houston, TX, age ~74 Get Report