Patents by Inventor Jonathan Marshall

Jonathan Marshall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8297375
    Abstract: 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.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: October 30, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8281880
    Abstract: In one aspect of the present invention an expandable tool for an earth boring system comprises a mandrel comprising a tubular body and an outer diameter, a plurality of blades disposed about the outer diameter, and a slidable sleeve positioned around the outer diameter and capable of manipulating the plurality of blades into collapsed and expanded positions.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: October 9, 2012
    Inventors: David R. Hall, Scott S. Dahlgren, Jonathan Marshall
  • Publication number: 20120234606
    Abstract: 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.
    Type: Application
    Filed: March 15, 2011
    Publication date: September 20, 2012
    Inventors: David R. Hall, Jonathan Marshall, Scott Dahlgren
  • Publication number: 20120234604
    Abstract: 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.
    Type: Application
    Filed: March 15, 2011
    Publication date: September 20, 2012
    Inventors: David R. Hall, Jonathan Marshall, Scott Dahlgren
  • Patent number: 8267196
    Abstract: 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.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: September 18, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Paula Turner, Christopher Durrand, Jonathan Marshall
  • Publication number: 20120221546
    Abstract: A method for facilitating Web content aggregation initiated by a client is disclosed. A Web site aggregation list is created. At least one Web site in the aggregation list is spidered from a user-identified computer. At least one attribute of content of the at least one spidered Web site is merged with at least one attribute of content of another Web site. The merged attributes are displayed to a user.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 30, 2012
    Inventors: Lawrence C. Rafsky, Robert E. Ungar, Thomas B. Donchez, Jonathan A. Marshall
  • Publication number: 20120193147
    Abstract: 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.
    Type: Application
    Filed: January 28, 2011
    Publication date: August 2, 2012
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8225883
    Abstract: A downhole percussive tool is disclosed comprising an interior chamber and a piston element slidably sitting within the interior chamber forming two pressure chambers on either side. The piston element may slide back and forth within the interior chamber as drilling fluid is channeled into either pressure chamber. Input channels supply drilling fluid into the pressure chambers and exit orifices release that fluid from the same. An exhaust orifice allows additional drilling fluid to release from the interior chamber. The amount of pressure maintained in either pressure chamber may be controlled by the size of the exiting orifices and exhaust orifices. In various embodiments, the percussive tool may form a downhole jack hammer or vibrator tool.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: July 24, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Publication number: 20120182835
    Abstract: Methods or systems for identifying seismic or acoustic signals of interest originating with moving motorized vehicles or footstep movement or stationary or moving machinery. A related system for monitoring an area includes a plurality of sensing devices each comprising a frame and a piezo-electric sensor element. A monitoring device is coupled to receive information from each of the sensing devices. One method includes providing a processing chain coupled to receive signal data from a sensor device which receives the signals, including a detection stage, a Joint Time Frequency (JTF) domain stage, and a classification stage. The detection stage identifies presence of signals that emerge from the background. The JTF domain stage estimates the state of the signals of interest over time. The classification stage assesses the previously derived information to form a decision about source identity. In one embodiment, the detector stage performs detections on a single cycle basis.
    Type: Application
    Filed: March 19, 2012
    Publication date: July 19, 2012
    Inventors: Robert Terry Davis, Armin Nyffenegger, Mark Andrew Tinker, Jonathan Marshall Volk, Kyle Burton Johnston, Paul Thurston Richards
  • Patent number: 8201645
    Abstract: In one aspect of the present invention, a downhole tool string component has a first and second threaded end on a mandrel, the first threaded end attached to a first sleeve and the second threaded end attached to a second sleeve. An intermediate sleeve assembly is disposed circumferentially around the mandrel and intermediate the first and second threaded ends, and the intermediate sleeve assembly is primarily isolated from stress of the first or second sleeve.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: June 19, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Nathan Nelson, Scott Woolston, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8172009
    Abstract: In one aspect of the present invention, an expandable tool for an earth boring system comprises a mandrel with a sleeve positioned around the outer surface and a blade disposed in a slot formed in the sleeve. The sleeve is also configured to slide along the tubular body. The blade comprises an interior slide groove located on an interior surface and an exterior slide groove located on an exterior surface. A sleeve protrusion is configured to extend into the interior slide groove, while a mandrel protrusion is configured to extend into the exterior slide groove. The blade is configured to shift laterally out of the slot as the sleeve slides axially, wherein the interior and exterior slide grooves are oriented at different angles and as the sleeve slides axially along the length of the mandrel, the slide grooves lock the blade in a pre-determined position through a wedging effect.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: May 8, 2012
    Inventors: David R. Hall, Jonathan Marshall, Scott Dahlgren
  • Publication number: 20120103594
    Abstract: In one aspect of the present invention, a system for a downhole string comprises a fluid path defined by a bore formed within a tubular component. A reciprocating valve is located within a wall of the bore hydraulically connecting the bore with a fluid passage. The valve comprises a substantially cylindrical shaped housing. First and second ports are disposed on a circumference of the housing, and a fluid pathway is disposed intermediate the first and second ports. The valve comprises an axially slidable spool disposed within and coaxial with the housing and comprises a blocker. The blocker is configured to slide axially so to block and unblock the fluid pathway to control a flow from the bore to the fluid passage. The valve comprises a plurality of seals. Each seal is disposed opposite of the blocker causing pressure to be equally applied to the blocker and the plurality of seals.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Inventors: David R. Hall, Jonathan Marshall, Dahlgren Scott
  • Publication number: 20120103593
    Abstract: In one aspect of the present invention, a system for a downhole string comprises a fluid path defined by a bore formed within a tubular component. A reciprocating valve is located within a wall of the bore hydraulically connecting the bore with a fluid passage. The valve comprises a substantially cylindrical shaped housing. First and second ports are disposed on a circumference of the housing, and a fluid pathway is disposed intermediate the first and second ports. The valve comprises an axially slidable spool disposed within and coaxial with the housing and comprises a blocker. The blocker is configured to slide axially so to block and unblock the fluid pathway to control a flow from the bore to the fluid passage. The valve comprises a plurality of seals. Each seal is disposed opposite of the blocker causing pressure to be equally applied to the blocker and the plurality of seals.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Inventors: David R. Hall, Jonathan Marshall, Dahlgren Scott
  • Publication number: 20120080234
    Abstract: In one aspect of the present invention, a steering assembly for downhole directional drilling comprises an outer bit comprising a bore and an outer cutting area and in inner bit comprising an inner cutting area and connected to a shaft that is disposed within the bore. At least one biasing mechanism is disposed around the shaft. At least one fluid channel is disposed within the outer bit and redirects fluid to the at least one biasing mechanism causing the at least one biasing mechanism to push the shaft and alter an axis of the inner bit with respect to an axis of the outer bit.
    Type: Application
    Filed: November 30, 2010
    Publication date: April 5, 2012
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Publication number: 20120080233
    Abstract: In one aspect of the present invention, a steering assembly for downhole directional drilling comprises a drill bit comprising a cutting portion and an outer diameter. A steering ring disposed around the outer diameter, and at least one biasing mechanism disposed intermediate the outer diameter and the steering ring. The at least one biasing mechanism is configured to move the steering ring with respect to the outer diameter.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 5, 2012
    Inventors: David R. Hall, Jonathan Marshall, Scott S. Dahlgren
  • Publication number: 20120017444
    Abstract: A safety knife comprises a knife body (10), a blade carrier (16) movable within the knife body (10) between a retracted position and an extended position, biasing means (24) urging the blade carrier (16) towards its retracted position, latch means to latch the blade carrier (16) in its extended position, and a weight (36) movable along a passage (32) relative to the knife body (10) and engageable with release means (40) to release the latch means.
    Type: Application
    Filed: February 2, 2010
    Publication date: January 26, 2012
    Applicants: THE SAFETY KNIFE CO. LTD., WA1 DESIGNS LIMITED
    Inventors: William Ireland, Peter Jonathan Marshall
  • Publication number: 20120012398
    Abstract: In one aspect of the present invention, an expandable tool for an earth boring system comprises a mandrel with a sleeve positioned around the outer surface and a blade disposed in a slot formed in the sleeve. The sleeve is also configured to slide along the tubular body. The blade comprises an interior slide groove located on an interior surface and an exterior slide groove located on an exterior surface. A sleeve protrusion is configured to extend into the interior slide groove, while a mandrel protrusion is configured to extend into the exterior slide groove. The blade is configured to shift laterally out of the slot as the sleeve slides axially, wherein the interior and exterior slide grooves are oriented at different angles and as the sleeve slides axially along the length of the mandrel, the slide grooves lock the blade in a pre-determined position through a wedging effect.
    Type: Application
    Filed: January 24, 2011
    Publication date: January 19, 2012
    Inventors: David R. Hall, Jonathan Marshall, Scott Dahlgren
  • Publication number: 20120012397
    Abstract: In one aspect of the present invention an expandable tool for an earth boring system comprises a mandrel comprising a tubular body and an outer diameter, a plurality of blades disposed about the outer diameter, and a slidable sleeve positioned around the outer diameter and capable of manipulating the plurality of blades into collapsed and expanded positions.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 19, 2012
    Inventors: David R. Hall, Scott S. Dahlgren, Jonathan Marshall
  • Publication number: 20120012337
    Abstract: In one aspect of the present invention, a crawler system for an earth boring system comprises at least two expandable tools along a common axis and spaced apart from each other along the common axis by a piston cylinder device. The at least two expandable tools comprise a mandrel comprising a tubular body and an outer diameter, a plurality of blades, and a slidable sleeve capable of manipulating the plurality of blades into collapsed and expanded positions. The plurality of blades of one of the at least two expandable tools expand to an expanded position and engage a borehole wall. The piston cylinder device anchors against the engagement between the borehole wall and one of the at least two expandable tools to axially translate the other of the at least two expandable tools.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 19, 2012
    Inventors: David R. Hall, Scott S. Dahlgren, Jonathan Marshall
  • Patent number: 8061784
    Abstract: A retention assembly, comprises a carbide bolster comprising a cavity formed in its base end. A shaft comprises an inserted end disposed within the cavity. The shaft is disposed within a hollow shank which comprises a first end contacting the bolster and a loaded end in mechanical communication with the shaft. The inserted end is interlocked to an inner surface of the cavity through a casting.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: November 22, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall, Italo Elqueta, Tyson J. Wilde, Christopher Durrand