Jonathan James Marshall
Social Work in Provo, UT

8408336, Apr 2, 2013

May 28, 2009

12/473444

David R. Hall - Provo UT, US
Scott Dahlgren - Alpine UT, US
Paula Turner - Pleasant Grove UT, US
Christopher Durrand - Pleasant Grove UT, US
Jonathan Marshall - Provo UT, US

Schlumberger Technology Corporation - Houston TX

E21B 4/02

175107, 175324, 415157, 415160

In one aspect of the present invention, a downhole drill string assembly comprises a bore there through to receive drilling fluid. A turbine may be disposed within the bore and exposed to the drilling fluid. At least one flow guide may be disposed within the bore and exposed to the drilling fluid wherein the flow guide acts to redirect the flow of the drilling fluid across the turbine. The flow guide may be adjusted by an actuator. Adjustments to the flow guide may be controlled by a downhole telemetry system, a processing unit, a control loop, or any combination thereof. In various embodiments the turbine may comprise rotatable turbine blades.

8365843, Feb 5, 2013

Feb 24, 2009

12/391358

David R. Hall - Provo UT, US
Scott Dahlgren - Alpine UT, US
Jonathan Marshall - Provo UT, US

Schlumberger Technology Corporation - Houston TX

E21B 10/32

175273, 175107, 175276, 175406

In one aspect of the invention, a downhole tool string component has at least one end adapted to connect to an adjacent tool sting component and a bore adapted to accommodate a flow of drilling fluid. A turbine is disposed within the bore and an actuating assembly is arranged such that a clutch may mechanically connect and disconnect with the turbine.

2012019, Aug 2, 2012

Jan 28, 2011

13/016566

David R. Hall - Provo UT, US
Scott Dahlgren - Alpine UT, US
Jonathan Marshall - Provo UT, US

E21B 10/32

175266

In one aspect of the invention, an expandable tool for an earth boring system comprises a through bore configured to accommodate drilling fluid. A blade is configured to extend and retract out of an outer surface of the tool. A secondary fluid pathway connects the bore with an interface between the outer surface of the tool and a surface of the blade. The secondary pathway directs drilling fluid through the interface.

7537053, May 26, 2009

Jan 29, 2008

12/021743

David R. Hall - Provo UT, US
Scott Dahlgren - Provo UT, US
Jonathan Marshall - Provo UT, US
Tyson J. Wilde - Provo UT, US

E21B 17/02

1662426, 166 651, 3408545

In one aspect of the invention, a downhole power generation assembly has a downhole tool string component comprising a bore. A collar is rotatably supported within the bore and has a centralized fluid passageway and a plurality of turbine blades. The collar is connected to a power generation element such that rotation of the collar moves the power generation element and induces an electrical current.

7624821, Dec 1, 2009

Jun 6, 2008

12/134442

David R. Hall - Provo UT, US
Scott Dahlgren - Provo UT, US
Jonathan Marshall - Provo UT, US

E21B 10/18

175231, 175242

In one aspect of the present invention, a downhole assembly has a downhole tool string component with a bore adapted to accommodate drilling mud having a central passage and at least one periphery passage. At least two movable segments are peripherally positioned around a bore wall adapted to constrict a diameter of the central passage and are adapted to divert drilling mud into the at least one periphery passage. At least one opening mechanism is adapted to move a portion of the at least two movable segments toward the bore wall.

2012023, Sep 20, 2012

Mar 15, 2011

13/048595

David R. Hall - Provo UT, US
Jonathan Marshall - Provo UT, US
Scott Dahlgren - Alpine UT, US

E21B 7/04

175 73

In one aspect of the present invention, a downhole rotary steerable system comprises a fluid path defined by a bore formed within a drill string component. A valve located within a wall of the bore which hydraulically connects the bore with a fluid cavity. A steering nozzle disposed on the drill string component and in communication with the fluid cavity. The valve is configured to control flow from the bore to the fluid cavity with an azimuthal sensing mechanism configured to determine the azimuth of the steering nozzle and instrumentation configured to control the valve based off of input from the azimuthal sensing mechanism.

8371400, Feb 12, 2013

Feb 24, 2009

12/391376

David R. Hall - Provo UT, US
Scott Dahlgren - Alpine UT, US
Jonathan Marshall - Provo UT, US

Schlumberger Technology Corporation - Houston TX

E21B 10/32

175273, 175107, 175267, 175106

A downhole tool string component has at least one end adapted to connect to an adjacent tool sting component and a bore adapted to accommodate a flow of drilling fluid. A turbine is disposed within the bore and an actuating assembly is arranged such that a clutch may mechanically connect and disconnect with the turbine.

8033330, Oct 11, 2011

Nov 30, 2007

11/947949

David R. Hall - Provo UT, US
Scott Dahlgren - Alpine UT, US
Jonathan Marshall - Provo UT, US

Schlumberger Technology Corporation - Houston TX

E21B 17/042

1662426, 285333

A downhole tool string component that includes a tubular body with an inner surface, an outer surface and a shoulder extending from the outer surface at one end of the tubular body, a sleeve disposed about the outer surface having an end face in contact with the shoulder. The downhole tool string component further includes a loading member disposed about the outer surface near the other end of the tubular body and which is adapted for loading the sleeve against the shoulder. The loading member includes an internal threadform that is adapted to threadingly engage an external threadform formed into the outer surface of the tubular body. At least one of the external threadform and the internal threadform includes a plurality of threads with a distal thread having a first thread height and a proximal thread has a second thread height, with the first thread height being greater than the second thread height and a plurality of the threads heights between the first and second thread heights continuously tapering from the first height to the second height.

8007051, Aug 30, 2011

Nov 29, 2007

11/947644

David R. Hall - Provo UT, US
Ronald B. Crockett - Payson UT, US
Jeff Jepson - Spanish Fork UT, US
Tyson J. Wilde - Spanish Fork UT, US
Jad Mills - Provo UT, US
Scott Dahlgren - Alpine UT, US
Jonathan Marshall - Provo UT, US

Schlumberger Technology Corporation - Houston TX

E21C 35/197

299113, 299107

In one aspect of the invention, a pick comprises a carbide bolster disposed intermediate an impact tip and a shank assembly. The impact tip comprises a superhard material bonded to a carbide substrate, and the tip is bonded to the bolster opposing a base of the bolster. The shank assembly comprises a central axis, a first end that protrudes into a cavity formed in the base of the bolster, and also an inducible attachment mechanism disposed proximate the first end. The inducible attachment mechanism is adapted to attach the shank assembly to the carbide bolster and restrict movement of the shank assembly with respect to the carbide bolster. The attachment mechanism may restrict movement of the shank assembly in a direction parallel to the central axis.

8297375, Oct 30, 2012

Oct 31, 2008

12/262398

David R. Hall - Provo UT, US
Scott Dahlgren - Alpine UT, US
Jonathan Marshall - Provo UT, US

Schlumberger Technology Corporation - Houston TX

E21B 4/02

175 57, 175107, 175324

In one aspect of the present invention, a drill bit has a jack element that is substantially coaxial with an axis of rotation of the drill bit and the jack element has an asymmetrical distal end that extends beyond a working face of the drill bit. A turbine is located within a bore formed in the drill bit and a flow valve is actuated by the turbine. The flow valve is adapted to route a drilling fluid in the bore into a porting mechanism adapted to extend the jack element farther beyond the working surface of the drill bit. The turbine is also adapted to rotate the jack element at variable speeds.