Jason C Whaley

US Patent:

8529222, Sep 10, 2013

Filed:

May 4, 2010

Appl. No.:

12/773051

Inventors:

Timothy Donald Burns - McAlester OK, US
Jason Neal Whaley - Hartshorne OK, US

Assignee:

National Oilwell Varco, L.P. - Houston TX

International Classification:

F04D 29/044
F04D 29/08
F04D 29/60
F16C 3/03

US Classification:

417360, 417365, 4174236, 29888021, 464162, 277370, 277511

Abstract:

A surface pump assembly having a thrust chamber with a telescoping shaft. In some embodiments, the surface pump assembly has a pump with a pump shaft, a thrust chamber with a telescoping shaft extending therein, the telescoping shaft extendable to engage the pump shaft and retractable to disengage the pump shaft, and a motor coupled to the telescoping shaft and operable to rotate the telescoping shaft. In some embodiments, the telescoping shaft has a rotatable shaft member, an adjusting nut threadably disposed thereabout, wherein the adjusting nut is moveable axially relative to the shaft member by rotation, and a first sleeve translatably disposed about the shaft member.

US Patent:

8534185, Sep 17, 2013

Filed:

Apr 23, 2008

Appl. No.:

12/596903

Inventors:

Andrew Dale Riley - Eufaula OK, US
Jason Whaley - Houston TX, US

Assignee:

National Oilwell Varco, L.P. - Houston TX

International Classification:

F04B 39/10

US Classification:

92185, 92112

Abstract:

A pump including a pressure compensated piston is disclosed. In some embodiments, the pump includes a piston with an annular body and an annular sealing element disposed radially outward of the annular body. The annular body has a radially-facing outer surface adjacent an inner surface of the sealing element and an axially-facing surface with an inlet port. A flowpath extends between the inlet port and the radially-facing outer surface of the annular body.

US Patent:

20110058959, Mar 10, 2011

Filed:

Sep 8, 2010

Appl. No.:

12/877481

Inventors:

Jason Neal Whaley - Hartshorne OK, US
Randall Weaver - McAlester OK, US

Assignee:

NATIONAL OILWELL VARCO, L. P. - Houston TX

International Classification:

F04B 53/16
F04B 19/22
F04B 39/12

US Classification:

417 53, 921711, 417534

Abstract:

A fluid section for a reciprocating pump comprises a cylinder assembly including a housing having a central axis, a first end, a second end opposite the first end, and a throughbore extending axially between the first end and the second end. In addition, the cylinder assembly includes a liner disposed within the throughbore of the housing. Further, the cylinder assembly includes an end cap coupled to the second end of the housing. Still further, the cylinder assembly includes an annulus radially positioned between the liner and the housing, the annulus being in fluid communication with the throughbore of the liner. Moreover, the fluid section includes a piston slidingly disposed in the throughbore of the liner. The piston is adapted to compress a fluid disposed in a pumping chamber within the liner extending axially through the throughbore of the liner between the piston and the first end of the housing.

US Patent:

20110283537, Nov 24, 2011

Filed:

May 20, 2011

Appl. No.:

13/112814

Inventors:

Larry Don Case - McAlester OK, US
Jason Neal Whaley - Hartshorne OK, US
Randall Ferrain Weaver - McAlester OK, US

Assignee:

National Oilwell Varco, L.P. - Houston TX

International Classification:

B21K 1/20
B25B 21/00

US Classification:

29890124, 292216, 81 5744

Abstract:

Apparatus and methods for removing valve cover components includes a torque transfer tool that mates with an extending portion of the valve cover assembly and has a multi-faceted segment to receive a torque-supplying wrench. A hydraulically-actuated wrench has a head with a multi-faceted portion that engages the corresponding multi-faceted segment of the torque transfer tool. The wrench's hydraulic cylinder rotates the wrench head upon actuation. The multifaceted segments can be splined. Also disclosed is a reaction tube against which the wrench can be braced prior to actuation of the cylinder.

US Patent:

20120085957, Apr 12, 2012

Filed:

Oct 8, 2010

Appl. No.:

12/900682

Inventors:

Samir Dhawan - Dehradun, IN
Jason Neal Whaley - Hartshorne OK, US
David Kay - Hartlepool, GB
Randall Ferrain Weaver - McAlester OK, US
Neil Colin Kennedy - Prudhoe, GB

Assignee:

NATIONAL OILWELL VARCO, L.P. - Houston TX

International Classification:

F16K 3/00

US Classification:

251326

Abstract:

A gate valve comprises a valve body having an internal working fluid passage and an internal gate chamber extending transverse to the working fluid passage. In addition, the gate valve comprises a gate disposed in the internal gate chamber and movable within the gate chamber between a closed position obstructing fluid flow through the working fluid passage and an open position allowing fluid flow through the working fluid passage. Further, the gate valve comprises an internal sealing arrangement coaxially disposed in the working fluid passage and extending between the valve body and the gate to form a barrier between the internal working fluid passage and the gate chamber. The internal sealing arrangement includes a frustoconical metal sealing surface adapted to sealingly engage an opposed mating frustoconical metal sealing surface on the valve body to form a first tapered metal-to-metal seal between the sealing arrangement and the valve body.