STEVEN ALEXANDER LEVERETTE
Pilots at Grand Riv Dr, Richmond, TX
License number
Texas A5130607
Issued Date
Jun 2013
Expiration Date
Jun 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1130 Grand River Dr, Richmond, TX 77406
Professional information
Apparatus And Method Of Installation Of A Mono-Column Floating Platform
US Patent:
2006003, Feb 23, 2006
Filed:
Sep 19, 2003
Appl. No.:
10/528494
Inventors:
Steven Leverette - Richmond TX, US
Kent Davies - Vercona, IT
Stephen Kibbee - Houston TX, US
Kent Davies - Vercona, IT
Stephen Kibbee - Houston TX, US
International Classification:
E02D 5/34, E02D 5/40
US Classification:
405223100, 405224000
Abstract:
In a floating platform, temporary buoyancy modules detachably mounted on the hull of the floating platform are provided. Each temporary buoyancy module is provided with removable winches for developing initial pre-tension of pre-installed tendons for anchoring the platform at the installation site.
Battered Column Tension Leg Platform
US Patent:
7462000, Dec 9, 2008
Filed:
Feb 28, 2006
Appl. No.:
11/364505
Inventors:
Steven J. Leverette - Richmond TX, US
Oriol R. Rijken - Houston TX, US
Peter A. Lunde - Cypress TX, US
Oriol R. Rijken - Houston TX, US
Peter A. Lunde - Cypress TX, US
Assignee:
Seahorse Equipment Corporation - Houston TX
International Classification:
B63B 35/44
US Classification:
4052231, 405224, 114164
Abstract:
A tension leg platform includes a deck supported on the upper ends of three or more columns interconnected at the lower ends thereof by horizontally disposed pontoons. The columns are battered inwardly and upwardly from the pontoons to the deck. Tendons connected at the columns anchor the platform to the seabed. The footprints of the base of the battered columns and the tendons are larger than the footprint of the deck supported on the upper ends of the columns.
Flexible Hang-Off Arrangement For A Catenary Riser
US Patent:
2009007, Mar 26, 2009
Filed:
Sep 25, 2007
Appl. No.:
11/861080
Inventors:
KRZYSZTOF J. WAJNIKONIS - Houston TX, US
STEVEN JOHN LEVERETTE - Richmond TX, US
STEVEN JOHN LEVERETTE - Richmond TX, US
Assignee:
SEAHORSE EQUIPMENT CORP - Houston TX
International Classification:
E21B 17/01, B63B 22/04, E02D 29/00
US Classification:
166367, 4052242, 441133
Abstract:
Flexible hang-off arrangement is provided for a catenary riser suspended from an offshore or inshore platform, which includes floating or fixed platforms, vessels or/and buoys. The bending loads in the top segments of the said riser are reduced by incorporating a pivot at the riser hang-off. Pressure containing welded, bolted, rolled or swaged pipe spools transfer fluids, including hydrocarbons between the riser and the platform. Along significant spool lengths the tangents to the center lines of said spools are orthogonal to and offset from the tangent to the center line of the riser at the hang-off. The said pressure containing spools include arbitrary looped, spiral and helicoidal designs that are subject to torsion.
Flexible Hang-Off Arrangement For A Catenary Riser
US Patent:
2010000, Jan 14, 2010
Filed:
Sep 22, 2009
Appl. No.:
12/564622
Inventors:
Krzysztof J. WAJNIKONIS - Houston TX, US
Steven John LEVERETTE - Richmond TX, US
Steven John LEVERETTE - Richmond TX, US
Assignee:
SEAHORSE EQUIPMENT CORP - Houston TX
International Classification:
E21B 43/013
US Classification:
166345
Abstract:
Flexible hang-off arrangement is provided for a catenary riser suspended from an offshore or inshore platform, which includes floating or fixed platforms, vessels or/and buoys. The bending loads in the top segments of the said riser are reduced by incorporating a pivot at the riser hang-off. Pressure containing welded, bolted, rolled or swaged pipe spools transfer fluids, including hydrocarbons between the riser and the platform. Along significant spool lengths the tangents to the center lines of said spools are orthogonal to and offset from the tangent to the center line of the riser at the hang-off. The said pressure containing spools include arbitrary looped, spiral and helicoidal designs that are subject to torsion.
Achieving Hydrostatic Stability Of A Floating Structure
US Patent:
7104730, Sep 12, 2006
Filed:
Oct 9, 2002
Appl. No.:
10/492074
Inventors:
Steven J. Leverette - Richmond TX, US
Steven E. Kibbee - Houston TX, US
Steven E. Kibbee - Houston TX, US
Assignee:
Seahorse Equipment Corporation - Houston TX
International Classification:
B63B 21/50
US Classification:
405200, 4052231, 114266, 114264
Abstract:
A floating platform includes a hull and a deck mounted on the uppermost end of the hull. The platform is anchored to the seabed by a plurality of tendons connected to the hull at the upper ends thereof and secured to the seabed at the lower ends thereof. The platform includes detachable buoyancy means providing supplemental buoyancy for hydrostatically stabilizing the platform without utilizing a derrick barge while ballasting the platform during installation.
Battered Column Offshore Platform
US Patent:
8196539, Jun 12, 2012
Filed:
May 22, 2009
Appl. No.:
12/470839
Inventors:
Steven J. Leverette - Richmond TX, US
Oriol R. Rijken - Houston TX, US
Peter A. Lunde - Cypress TX, US
Stephen E. Kibbee - Houston TX, US
John O. Telders - The Hague, NL
Oriol R. Rijken - Houston TX, US
Peter A. Lunde - Cypress TX, US
Stephen E. Kibbee - Houston TX, US
John O. Telders - The Hague, NL
Assignee:
Seahorse Equipment Corporation - Houston TX
International Classification:
B63B 35/44
US Classification:
114265, 4052231, 405224
Abstract:
An offshore platform includes a buoyant hull comprising three or more interconnected pontoons and a plurality of support columns. The support columns support a deck or structure that supports equipment and/or payloads above a water surface. The support columns extend upwardly from respective ends of the pontoons to the deck or structure supported above the water surface. Anchoring members anchor the platform to the seabed.
Offshore Platform With Outset Columns
US Patent:
2013000, Jan 3, 2013
Filed:
Jul 1, 2011
Appl. No.:
13/175502
Inventors:
Oriol R. Rijken - Houston TX, US
Xiaoqiang Bian - Katy TX, US
Edward Sean Large - Houston TX, US
Steven John Leverette - Richmond TX, US
Xiaoqiang Bian - Katy TX, US
Edward Sean Large - Houston TX, US
Steven John Leverette - Richmond TX, US
Assignee:
SEAHORSE EQUIPMENT CORP - Houston TX
International Classification:
B63B 35/44, E02B 17/08, B63B 35/00
US Classification:
114265, 4052231, 405200
Abstract:
A hull, suitable for use as a tension leg platform (TLP) or as a semi-submersible vessel, comprises columns having a generally polygonal transverse cross section at least one axis of which is generally radially aligned with the central vertical axis of the hull. Buoyant, subsurface pontoons interconnect adjacent columns. The pontoons are generally rectangular in cross section and the outboard, generally vertical surface of each pontoon is connected to a side surface of an adjoining column at a location which is substantially inboard of the outermost face of the column. In certain embodiments of the invention, tendon porches (configured to receive the upper tendon connectors of a TLP) are mounted to the outboard surface of one or more pontoons.
Ultra-Deepwater Floating Platform
US Patent:
2011014, Jun 16, 2011
Filed:
Apr 6, 2005
Appl. No.:
10/599608
Inventors:
Steven J. Leverette - Richmond TX, US
Oriol R. Rijken - Houston TX, US
Oriol R. Rijken - Houston TX, US
International Classification:
E02D 5/74, B63B 35/44
US Classification:
405224, 114265
Abstract:
A floating platform system includes a hull design configuration () for limiting maximum tendon loads and aiding in inhibiting resonant responses in the platform system leading to better motions for personnel, equipment and riser support, and to lighter and lower cost tendon systems.
Twin Fin Fairing
US Patent:
7513209, Apr 7, 2009
Filed:
Mar 12, 2007
Appl. No.:
11/684861
Inventors:
Rodney H. Masters - Houston TX, US
Randy W. Masters - Houston TX, US
Michael Sykes - Spring TX, US
Steven J. Leverette - Richmond TX, US
Kenneth J. Schaudt - Katy TX, US
Randy W. Masters - Houston TX, US
Michael Sykes - Spring TX, US
Steven J. Leverette - Richmond TX, US
Kenneth J. Schaudt - Katy TX, US
Assignee:
Seahorse Equipment Corporation - Houston TX
International Classification:
F15D 1/10
US Classification:
114243
Abstract:
A fairing for the reduction of vortex-induced vibration and the minimization of drag about a substantially cylindrical element immersed in a fluid medium. The fairing also eliminates the galloping phenomenon typically associated with a teardrop-shaped fairing. The fairing having a U-shaped cylindrical shell with opposing edges defining a longitudinal gap and parallel fins extending outwardly from the opposing edges of the shell, the parallel fins being positioned so as to reduce vortex-induced vibration, minimize drag and to eliminate the galloping phenomenon on the cylindrical element.
Twin Fin Fairing
US Patent:
7337742, Mar 4, 2008
Filed:
Aug 9, 2006
Appl. No.:
11/463413
Inventors:
Rodney H. Masters - Houston TX, US
Randy W. Masters - Houston TX, US
Michael Sykes - Spring TX, US
Steven J. Leverette - Richmond TX, US
Kenneth J. Schaudt - Katy TX, US
Randy W. Masters - Houston TX, US
Michael Sykes - Spring TX, US
Steven J. Leverette - Richmond TX, US
Kenneth J. Schaudt - Katy TX, US
Assignee:
VIV Suppression, Inc. - Houston TX
Seahorse Equipment Corporation - Houston TX
Seahorse Equipment Corporation - Houston TX
International Classification:
F15D 1/10
US Classification:
114243
Abstract:
A fairing for the reduction of vortex-induced vibration and the minimization of drag about a substantially cylindrical element immersed in a fluid medium. The fairing also eliminates the galloping phenomenon typically associated with a teardrop-shaped fairing. The fairing having a U-shaped cylindrical shell with opposing edges defining a longitudinal gap and parallel fins extending outwardly from the opposing edges of the shell, the parallel fins being positioned so as to reduce vortex-induced vibration, minimize drag and to eliminate the galloping phenomenon on the cylindrical element. Preferably, the length to diameter ratio of the fins is 1. 5 to 2. 50.