Eric Dale Larson
Engineering at Is Spg Ln, Tomball, TX
License number
Louisiana PE.0026636
Issued Date
Jan 30, 1996
Expiration Date
Sep 30, 2018
Category
Civil Engineer
Type
Mechanical Engineer
Address
Address
17938 Island Spring Ln, Tomball, TX 77377
Professional information
Marine Drilling Riser System
US Patent:
8312933, Nov 20, 2012
Filed:
Mar 29, 2011
Appl. No.:
13/074858
Inventors:
Eric D. Larson - Tomball TX, US
Rick L. Stringfellow - Houston TX, US
Richard T. Trenholme - Houston TX, US
Rick L. Stringfellow - Houston TX, US
Richard T. Trenholme - Houston TX, US
Assignee:
Vetco Gray Inc. - Houston TX
International Classification:
E21B 7/12, E21B 19/16, F16L 55/00
US Classification:
166380, 1652426, 165344, 165345, 165359, 285 82, 285922
Abstract:
A marine drilling riser system for securing drilling riser joints in a drilling riser string is presented. The drilling riser string is assembled by connecting a pin end of one drilling riser joint to a box end of an adjoining drilling riser joint by using a moveable ring to drive a fastener of one drilling riser joint against the adjoining drilling riser joint. A spider is used to drive the movable ring axially from a position where the fastener is not engaged against the adjoining drilling riser joint to a position where the fastener is engaged against the adjoining drilling riser joint, and vice versa. A latch is used to prevent the moveable ring from moving inadvertently from the second position. The spider may also be used to support the marine drilling riser string during assembly.
Drilling Riser Adapter Connection With Subsea Functionality
US Patent:
2012022, Sep 6, 2012
Filed:
Mar 1, 2011
Appl. No.:
13/038044
Inventors:
Eric Dale Larson - Tomball TX, US
Robert Allen Blue - Houston TX, US
Robert Allen Blue - Houston TX, US
Assignee:
Vetco Gray Inc. - Houston TX
International Classification:
E21B 17/01
US Classification:
166340, 166345
Abstract:
A drilling riser adapter variably connects and releases a riser from a subsea wellhead assembly. The drilling riser adapter has a hydraulically actuated engagement assembly for selectively engaging and disengaging a lower end of the marine riser. The drilling riser adapter also includes a control panel communicatively coupled to the engagement assembly for actuating the engagement assembly to engage and disengage the lower end of the marine riser. The drilling riser adapter also includes a hydraulic fluid pressure receptacle on the control panel for engagement by a remotely operated vehicle to supply hydraulic fluid pressure to the engagement assembly. The drilling riser adapter may be actuated subsea to release a first riser from the wellhead assembly, and connect to a second riser.
Made-Up Flange Locking Cap
US Patent:
8511387, Aug 20, 2013
Filed:
Dec 21, 2010
Appl. No.:
12/975080
Inventors:
Thomas A Fraser - Spring TX, US
John G Landthrip - Katy TX, US
Eric D Larson - Tomball TX, US
Sara N Riddle - Houston TX, US
Dale Norman - Spring TX, US
Jamie C Gamble - Houston TX, US
Satish N Ramasheshaiah - Houston TX, US
James R Reams - Houston TX, US
John G Landthrip - Katy TX, US
Eric D Larson - Tomball TX, US
Sara N Riddle - Houston TX, US
Dale Norman - Spring TX, US
Jamie C Gamble - Houston TX, US
Satish N Ramasheshaiah - Houston TX, US
James R Reams - Houston TX, US
Assignee:
BP Corporation North America Inc. - Houston TX
International Classification:
E21B 41/04, E21B 19/00
US Classification:
166350, 166338, 166339, 166341, 166342, 166 854
Abstract:
A cap is lowered onto and secured to a subsea member with an external flange, effecting a seal between the external flange and cap. The cap includes a tubular outer body defining a cavity, and a tubular inner body defining a bore, wherein the lower end of the inner body resides within the cavity. The cap also includes a lower engaging member coupled to the outer body that is radially movable between an inward state and an outward state and configured to alternately engage and disengage at least one of a backside of the external flange. Finally, the cap includes an upper engaging member coupled to the outer body and being radially movable independently of the lower engaging member between an inward state and an outward state and configured to engage and disengage the inner body.
Stress Distributing Wellhead Connector
US Patent:
7614453, Nov 10, 2009
Filed:
Jun 1, 2006
Appl. No.:
11/445065
Inventors:
Michael W. Spiering - Kingwood TX, US
Maoye Sun - Cypress TX, US
Paul D. Bunch - Houston TX, US
Eric D. Larson - Tomball TX, US
Maoye Sun - Cypress TX, US
Paul D. Bunch - Houston TX, US
Eric D. Larson - Tomball TX, US
Assignee:
Cameron International Corporation - Houston TX
International Classification:
E21B 33/038
US Classification:
166338, 166339, 166351, 166368, 2851231
Abstract:
In accordance with certain embodiments, the present invention provides a connector for attaching to a multi-toothed profile on a wellhead features a tooth profile that staggers loading preferably starting at a loading surface furthest from the connector body sitting on the wellhead and moving toward the connector body. The staggered loading more evenly distributes stresses on the matching loading surfaces as compared to the result of using a tooth profile on the connector that nearly exactly matches the profile on the wellhead. The joint can then take advantage of an increased preload and exhibit improved stress characteristics when operating at high loading conditions.
Subsea Locking Connector
US Patent:
8499838, Aug 6, 2013
Filed:
Dec 21, 2010
Appl. No.:
12/975100
Inventors:
Thomas A Fraser - Spring TX, US
John G Landthrip - Katy TX, US
Eric D Larson - Tomball TX, US
Sara N Riddle - Houston TX, US
Dale Norman - Spring TX, US
Jamie C Gamble - Houston TX, US
Satish N Ramasheshaiah - Houston TX, US
James R Reams - Houston TX, US
John G Landthrip - Katy TX, US
Eric D Larson - Tomball TX, US
Sara N Riddle - Houston TX, US
Dale Norman - Spring TX, US
Jamie C Gamble - Houston TX, US
Satish N Ramasheshaiah - Houston TX, US
James R Reams - Houston TX, US
Assignee:
BP Corporation North America Inc. - Houston TX
International Classification:
E21B 7/12
US Classification:
166338, 166341, 166345, 166363, 166 854
Abstract:
A connector is lowered onto and secured to a subsea member, effecting a seal between subsea member and the connector. The connector includes an outer body defining a cavity, and an inner body defining a bore, wherein the lower end of the inner body resides within the cavity. The connector also includes an engaging member coupled to the outer body and adapted to engage the subsea device, the engaging member radially movable between a disengaged position and an engaged position. The connector includes a seal carried by the inner body and adapted to form a seal between the bore and the subsea device. Finally, the connector includes a pre-loading member coupled to the outer body, operable to urge the inner body and seal against the subsea device to exert a pre-loading force on the seal. A differential pressure between the bore and a subsea environment energizes the seal.
System And Method For Connecting Tubular Members
US Patent:
7913767, Mar 29, 2011
Filed:
Jun 16, 2008
Appl. No.:
12/139793
Inventors:
Eric D. Larson - Tomball TX, US
Rick L. Stringfellow - Houston TX, US
Richard T. Trenholme - Houston TX, US
Rick L. Stringfellow - Houston TX, US
Richard T. Trenholme - Houston TX, US
Assignee:
Vetco Gray Inc. - Houston TX
International Classification:
E21B 7/12, E21B 19/16, F16L 55/00
US Classification:
166380, 1662426, 166344, 166345, 166359, 285 82, 285922
Abstract:
A technique for securing drilling riser joints in a drilling riser string is presented. The drilling riser joints have a tubular housing that has a box configuration on one end and a pin configuration on the other end. The drilling riser string is assembled by connecting the pin end of one drilling riser joint to the box end of an adjoining drilling riser joint. A moveable ring is used to connect adjoining drilling riser joints. The moveable ring is used to drive a fastener of one drilling riser joint against the adjoining drilling riser joint. The moveable ring is driven axially from a position where the fastener is not engaged against the adjoining drilling riser joint to a position where the fastener is engaged against the adjoining drilling riser joint. A latch is used to prevent the moveable ring from moving inadvertently from the second position.
Dog-Type Lockout And Position Indicator Assembly
US Patent:
8388255, Mar 5, 2013
Filed:
Jul 13, 2009
Appl. No.:
12/502095
Inventors:
Eric D. Larson - Tomball TX, US
John V. Leba - Cypress TX, US
Robert A. Blue - Houston TX, US
John V. Leba - Cypress TX, US
Robert A. Blue - Houston TX, US
Assignee:
Vetco Gray Inc. - Houston TX
International Classification:
F16D 1/116
US Classification:
403316, 403 27, 403 31, 285 26, 285922
Abstract:
A connector assembly for connecting two members that allows manual lockdown to prevent accidental disengagement. The connector assembly can be used to connect a tension ring to a housing on a riser by using a lower set of hydraulically actuated dogs. A set of upper hydraulically actuated dogs on the connector assembly can be used to connect the tension ring to a diverter housing mounted on a rig. The connector assembly also has position indicators that ride along with the dogs to indicate whether the dogs are in the engaged or disengaged position.
Stress Distributing Wellhead Connector
US Patent:
8016042, Sep 13, 2011
Filed:
Sep 30, 2009
Appl. No.:
12/571106
Inventors:
Michael W. Spiering - Kingwood TX, US
Maoye Sun - Cypress TX, US
Paul D. Bunch - Houston TX, US
Eric D. Larson - Tomball TX, US
Maoye Sun - Cypress TX, US
Paul D. Bunch - Houston TX, US
Eric D. Larson - Tomball TX, US
Assignee:
Cameron International Corporation - Houston TX
International Classification:
E21B 33/038
US Classification:
166338, 166339, 166351, 166368, 166383, 285364, 285369
Abstract:
In accordance with certain embodiments, the present invention provides a connector for attaching to a multi-toothed profile on a wellhead features a tooth profile that staggers loading preferably starting at a loading surface furthest from the connector body sitting on the wellhead and moving toward the connector body. The staggered loading more evenly distributes stresses on the matching loading surfaces as compared to the result of using a tooth profile on the connector that nearly exactly matches the profile on the wellhead. The joint can then take advantage of an increased preload and exhibit improved stress characteristics when operating at high loading conditions.
Riser Buoyancy Adjustable Thrust Column
US Patent:
8322438, Dec 4, 2012
Filed:
Apr 16, 2010
Appl. No.:
12/761557
Inventors:
Eric D. Larson - Tomball TX, US
Rick L. Stringfellow - Houston TX, US
Jesse L. Bullard - Houston TX, US
Jim R. Reams - Houston TX, US
Rick L. Stringfellow - Houston TX, US
Jesse L. Bullard - Houston TX, US
Jim R. Reams - Houston TX, US
Assignee:
Vetco Gray Inc. - Houston TX
International Classification:
E21B 17/01
US Classification:
166367, 166350, 166378, 138106, 405171, 441133
Abstract:
An offshore drilling riser joint has a central riser pipe, a number of auxiliary lines mounted around it, and a buoyancy module assembly of a buoyant material. A pair of upper thrust sleeves slide over two of the auxiliary lines, each of the upper thrust sleeves having a flange in contact with an upper end of the buoyancy module assembly. Each of the upper thrust sleeves transfer upward thrust imposed by the buoyancy module assembly to an upper support flange mounted to the central riser pipe. A pair of lower thrust sleeves slide over two of the auxiliary lines. Each lower thrust sleeve has a lower thrust flange that is engaged by a lower end of the buoyancy module assembly. Each of the lower thrust sleeves transfer weight of the buoyancy module assembly while out of water to a lower support flange mounted to the central riser pipe.