Nathan V Nelson

US Patent:

7451835, Nov 18, 2008

Filed:

Nov 14, 2007

Appl. No.:

11/940091

Inventors:

David R. Hall - Provo UT, US
Daryl Wise - Provo UT, US
David Lundgreen - Provo UT, US
Nathan Nelson - Provo UT, US
Scott Dahlgren - Provo UT, US

International Classification:

E21B 4/02

US Classification:

175107, 166 651, 175 73

Abstract:

In one aspect, a downhole assembly has a downhole tool string component with a bore adapted to accommodate drilling mud. A fluid barrier is disposed within the bore and has a cylindrical portion substantially aligned with the bore. A drive shaft is sealed within and substantially coaxial with the cylindrical portion and has a first magnet disposed on its outer surface. A turbine assembly is disposed around the cylindrical portion of the fluid barrier and has an inner diameter and outer surface. The outer surface of the turbine assembly has a plurality of turbine blades. The inner diameter of the turbine assembly has a second magnet disposed within a region defined by the turbine blades and is in magnetic communication with the first magnet of the drive shaft, wherein when the drilling mud engages the turbine blades the first and second magnets rotate the drive shaft with the turbine assembly.

US Patent:

7497254, Mar 3, 2009

Filed:

Mar 21, 2007

Appl. No.:

11/688952

Inventors:

David R. Hall - Provo UT, US
Paula Turner - Provo UT, US
Nathan Nelson - Provo UT, US
Daryl Wise - Provo UT, US

International Classification:

E21B 43/00

US Classification:

166 651, 1662426

Abstract:

A downhole tool string component, having a tubular body with an outer diameter. A first, second, and third flange are disposed around the outer diameter of the tubular body at different axial locations. A first sleeve is disposed around the tubular body such that opposite ends of the first sleeve fit around at least a portion of the first and second flanges, forming a first sealed pocket around the outer diameter of the tubular body. A second sleeve is disposed around the tubular body such that opposite ends of the second sleeve fit around at least a portion of the second and third flanges, forming a second sealed pocket around the outer diameter of the tubular body.

US Patent:

7650951, Jan 26, 2010

Filed:

Apr 16, 2009

Appl. No.:

12/424901

Inventors:

David R. Hall - Provo UT, US
Scott Dahlgren - Provo UT, US
Nathan Nelson - Provo UT, US
David Lundgreen - Provo UT, US

International Classification:

E21B 7/04
E21B 19/24

US Classification:

175 57, 175 73, 175267, 1753251

Abstract:

In one embodiment of the invention, a downhole tool string component comprising a through bore running there through formed to accept drilling fluid. At least one mechanical actuation device is also disposed within the through bore. A guide channel is disposed within the through bore and comprises a geometry shaped to conduct the at least one mechanical actuation device. A switch is disposed within the guide channel in an original position and actuatable by the at least one mechanical actuation device to a subsequent position. A resettable mechanism is in contact with the switch wherein the resettable mechanism returns the switch to its original position. A receptacle may also be disposed within the through bore comprising a geometry shaped to accept the at least one mechanical actuation device.

US Patent:

7669663, Mar 2, 2010

Filed:

Apr 16, 2009

Appl. No.:

12/424853

Inventors:

David R. Hall - Provo UT, US
Scott Dahlgren - Provo UT, US
Nathan Nelson - Provo UT, US
David Lundgreen - Provo UT, US

International Classification:

E21B 23/00
E21B 7/00

US Classification:

166381, 166 651, 166318, 175 57, 175324

Abstract:

In one embodiment of the invention, a downhole tool string component comprising a through bore running there through formed to accept drilling fluid. At least one mechanical actuation device is also disposed within the through bore. A guide channel is disposed within the through bore and comprises a geometry shaped to conduct the at least one mechanical actuation device. A switch is disposed within the guide channel in an original position and actuatable by the at least one mechanical actuation device to a subsequent position. A resettable mechanism is in contact with the switch wherein the resettable mechanism returns the switch to its original position. A receptacle may also be disposed within the through bore comprising a geometry shaped to accept the at least one mechanical actuation device.

US Patent:

7669671, Mar 2, 2010

Filed:

Aug 20, 2007

Appl. No.:

11/841101

Inventors:

David R. Hall - Provo UT, US
Paula Turner - Provo UT, US
Nathan Nelson - Provo UT, US

International Classification:

E21B 17/02

US Classification:

175 74, 175320, 1662426

Abstract:

In one aspect of the invention a downhole tool string component has a segmented sleeve slideably attached over the exterior of a mandrel which is adapted for connection to an adjacent tool string component. An end of the sleeve is abutted against a shoulder element of the mandrel and an opposite end of the sleeve is axially loaded by a threaded element attached to the mandrel. The sleeve comprises at least one sleeve segment with an engagement end comprising at least one axial anti-rotation assembly adapted to transfer torque to an adjacent sleeve segment, the shoulder element, or the threaded element.

US Patent:

7692140, Apr 6, 2010

Filed:

Dec 19, 2008

Appl. No.:

12/339799

Inventors:

David R. Hall - Provo UT, US
Paula Turner - Provo UT, US
Scott Woolston - Provo UT, US
Nathan Nelson - Provo UT, US

International Classification:

G01V 5/10

US Classification:

2502694

Abstract:

In one aspect of the invention, a downhole tool string component comprises a tubular body with a first and a second tool joint adapted to connect to adjacent tool string components, and a central bore adapted to pass drilling mud between the joints. A sleeve circumferentially disposed about an outer surface of the tubular body. The sleeve is rigidly attached to the outer surface at first and second sleeve ends and forming at least three stabilizer blades. A nuclear source and at least one nuclear detector are disposed within a gap formed between the inner surface of the sleeve and the outer surface of the tubular body.

US Patent:

7721826, May 25, 2010

Filed:

Sep 6, 2007

Appl. No.:

11/851094

Inventors:

David R. Hall - Provo UT, US
David Lundgreen - Provo UT, US
Jim Shumway - Lehi UT, US
Nathan Nelson - Provo UT, US
Daryl Wise - Provo UT, US
Paula Turner - Pleasant Grove UT, US

Assignee:

Schlumberger Technology Corporation - Houston TX

International Classification:

E21B 7/10
E21B 10/26

US Classification:

175 74, 175322, 175385

Abstract:

In one aspect of the invention, a drill string comprises a drill bit with a body intermediate a shank and a working face, and the working face comprises at least one cutting element. A jack assembly is disposed within the drill bit body and comprises a jack element disposed on a distal end of the assembly. The jack element substantially protrudes from the working face and is adapted to move with respect to the bit body. At least one position feedback sensor is disposed proximate the jack assembly and is adapted to detect a position and/or orientation of the jack element.

US Patent:

7897914, Mar 1, 2011

Filed:

Dec 19, 2008

Appl. No.:

12/339388

Inventors:

David R. Hall - Provo UT, US
Paula Turner - Provo UT, US
Scott Woolston - Provo UT, US
Nathan Nelson - Provo UT, US

Assignee:

Schlumberger Technology Corporation - Houston TX

International Classification:

G01V 5/10

US Classification:

250254

Abstract:

In one aspect of the invention, a downhole tool string component comprises a tubular body with a first and a second tool joint adapted to connect to adjacent tool string components, and a central bore adapted to pass drilling mud between the joints. A sleeve circumferentially disposed about an outer surface of the tubular body. The sleeve is rigidly attached to the outer surface at first and second sleeve ends and forming at least three stabilizer blades. A nuclear source and at least one nuclear detector are disposed within a gap formed between the inner surface of the sleeve and the outer surface of the tubular body.