Patents by Inventor Roger Lynn Schultz
Roger Lynn Schultz 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).
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Patent number: 9022115Abstract: A method for wellbore perforation in which a section of the wellbore to be perforated is isolated and purged of wellbore fluid to provide a clear path for laser beam transmittal. A laser beam emitter in the purged wellbore section transmits a laser beam pulse from the laser beam emitter to a target area of a sidewall and formation lithology of the purged wellbore section, thereby altering a mechanical property of a material of the sidewall and formation lithology and producing material debris. A liquid jet pulse of a liquid is transmitted immediately following termination of the laser beam pulse to the target area, thereby removing the material debris from the target area. This cycle is then repeated until the desired perforation depth has been achieved.Type: GrantFiled: November 11, 2010Date of Patent: May 5, 2015Assignees: Gas Technology Institute, Halliburton Energy Services, Inc.Inventors: Mark Kleefisch, Colin Hawthorn, Henry David Reynolds, Neal Gregory Skinner, Jim Basuki Surjaatmadja, Roger Lynn Schultz, Timothy Holiman Hunter
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Publication number: 20120118568Abstract: A method for wellbore perforation in which a section of the wellbore to be perforated is isolated and purged of wellbore fluid to provide a clear path for laser beam transmittal. A laser beam emitter in the purged wellbore section transmits a laser beam pulse from the laser beam emitter to a target area of a sidewall and formation lithology of the purged wellbore section, thereby altering a mechanical property of a material of the sidewall and formation lithology and producing material debris. A liquid jet pulse of a liquid is transmitted immediately following termination of the laser beam pulse to the target area, thereby removing the material debris from the target area. This cycle is then repeated until the desired perforation depth has been achieved.Type: ApplicationFiled: November 11, 2010Publication date: May 17, 2012Applicants: HALLIBURTON ENERGY SERVICES, INC., GAS TECHNOLOGY INSTITUTEInventors: Mark Kleefisch, Colin Hawthorn, Henry David Reynolds, Neal Gregory Skinner, Jim Basuki Surjaatmadja, Roger Lynn Schultz, Timothy Holiman Hunter
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Patent number: 7823635Abstract: A downhole oil and water separator for an oil well includes a water-selective membrane disposed in a production flowpath of the well. The water-selective membrane is operable to selectively pass water from the production flowpath to a disposal zone to increase the concentration of oil in the production flowpath at the surface.Type: GrantFiled: August 23, 2004Date of Patent: November 2, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Adam Davis Wright, Roger Lynn Schultz, Syed Hamid, Harry D. Smith, Jr.
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Patent number: 7258169Abstract: An energy storage device for powering a downhole tool may be heated to an effective temperature to improve the operability of the energy storage device. The energy storage device may comprise, for example, a primary battery, a secondary battery, a fuel cell, a capacitor, or combinations thereof. The effective temperature to which the energy storage device is heated may be greater than an ambient temperature in the wellbore near the energy storage device. The energy storage device may be heated using various heat sources such as an ohmic resistive heater, a heat pump, an exothermic reaction, a power generator, a heat transfer medium, the energy storage device itself, a downhole tool, or combinations thereof. A thermal conductor may extend between the heat source and the energy storage device. Further, a thermal insulator may at least partially surround the heat source and the energy storage device.Type: GrantFiled: March 23, 2004Date of Patent: August 21, 2007Assignee: Halliburton Energy Services, Inc.Inventors: Michael L. Fripp, Bruce H. Storm, Jr., Michael Huh, Roger Lynn Schultz
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Patent number: 6776238Abstract: Screen assemblies (40, 42) and a single trip method for selectively fracturing multiple formations (14, 16) traversed by a wellbore (32) are disclosed. Each formation (14, 16) has a screen assembly (40, 42) having a plurality of valves (60, 66) positioned adjacent thereto. During the treatment process, the formations (14, 16) are selectively treated with a treatment fluid that is pumped into the interior of the adjacent screen assembly (40, 42). The valves (60, 66) of the respective screen assemblies (40, 42) progressively allow the treatment fluid to exit from the interior to the exterior of the screen assemblies (40, 42) such that each formation (14, 16) is progressively fractured.Type: GrantFiled: April 9, 2002Date of Patent: August 17, 2004Assignee: Halliburton Energy Services, Inc.Inventors: Ronald G. Dusterhoft, Syed Hamid, Robert Ken Michael, Roger Lynn Schultz
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Publication number: 20030188871Abstract: Screen assemblies (40, 42) and a single trip method for selectively fracturing multiple formations (14, 16) traversed by a wellbore (32) are disclosed. Each formation (14, 16) has a screen assembly (40, 42) having a plurality of valves (60, 66) positioned adjacent thereto. During the treatment process, the formations (14, 16) are selectively treated with a treatment fluid that is pumped into the interior of the adjacent screen assembly (40, 42). The valves (60, 66) of the respective screen assemblies (40, 42) progressively allow the treatment fluid to exit from the interior to the exterior of the screen assemblies (40, 42) such that each formation (14, 16) is progressively fractured.Type: ApplicationFiled: April 9, 2002Publication date: October 9, 2003Inventors: Ronald G. Dusterhoft, Syed Hamid, Robert Ken Michael, Roger Lynn Schultz
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Patent number: 6594602Abstract: A calibration method provides enhanced accuracy in calibrating outputs of sensors. In embodiments described herein, the outputs of one or more sensors are input to a neural network and the neural network is trained to generate calibrated outputs in response thereto. In one method, the neural network is trained to simulate the output of a known accurate reference sensor in response to input to the neural network of the output of a subject sensor. In another method, the neural network is trained to simulate the output of a known accurate reference sensor in response to input to the neural network of the output of a subject sensor and the output of a second sensor. Additional methods are provided which compensate for changes in a stimulus applied to a sensor, the output which is indicative of another stimulus.Type: GrantFiled: April 23, 1999Date of Patent: July 15, 2003Assignee: Halliburton Energy Services, Inc.Inventor: Roger Lynn Schultz
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Patent number: 6504258Abstract: A downhole power generator produces electrical power for use by downhole tools. In a described embodiment, a downhole power generator includes a member that is vibrated in response to fluid flow through a housing. Vibration of the member causes a power generating assembly to generate electrical power.Type: GrantFiled: June 8, 2001Date of Patent: January 7, 2003Assignee: Halliburton Energy Services, Inc.Inventors: Roger Lynn Schultz, Paul David Ringgenberg, Clark Edward Robison, Robert Ken Michael, Russell Irving Bayh, III
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Publication number: 20020179301Abstract: A method and system to passively monitor cement integrity and reservoir/formation parameters near the wellbore at all depths and orientations outside a wellbore. Different types (pressure, temperature, resistivity, rock property, formation property etc.) of sensors are “pumped” into place by placing them into a suspension in the cement slurry at the time a well casing is being cemented, by placing them in gravel pack used in frackpacking, or by a deflected drilling tool. The sensors are either battery operated, or of a type where external excitation, (EMF, acoustic, RF etc.) may be applied to power and operate the sensor, which will send a signal conveying the desired information. The sensor is then be energized and interrogated using a separate piece of wellbore deployed equipment whenever it is desired to monitor cement or formation conditions. This wellbore deployed equipment could be, for example, a wireline tool.Type: ApplicationFiled: June 24, 2002Publication date: December 5, 2002Inventors: Roger Lynn Schultz, Clark Edward Robison, Russell Irving Bayh, Benjamin Bernhardt Stewart, Brian George Nutley, Jamie George Oag, Nadir Mahjoub
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Patent number: 6408943Abstract: A method and system is shown to passively monitor cement integrity within a wellbore. Different types of sensors (pressure, temperature, resistivity, rock property, formation property etc.) are “pumped” into place by placing them into a suspension in the cement slurry at the time a well casing is being cemented. The sensors are either battery operated, or of a type where external excitation, (EMF, acoustic, RF etc.) may be applied to power and operate the sensor, which will send a signal conveying the desired information. The sensor is then energized and interrogated using a separate piece of wellbore deployed equipment whenever it is desired to monitor cement conditions. This wellbore deployed equipment could be, for example, a wireline tool.Type: GrantFiled: July 17, 2000Date of Patent: June 25, 2002Assignee: Halliburton Energy Services, Inc.Inventors: Roger Lynn Schultz, Clark Edward Robison, Russell Irving Bayh, III, Benjamin Bernhardt Stewart, III, Brian George Nutley, Jamie George Oag, Nadir Mahjoub
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Publication number: 20010040379Abstract: A downhole power generator produces electrical power for use by downhole tools. In a described embodiment, a downhole power generator includes a member that is vibrated in response to fluid flow through a housing. Vibration of the member causes a power generating assembly to generate electrical power.Type: ApplicationFiled: June 8, 2001Publication date: November 15, 2001Applicant: Halliburton Energy Services, IncInventors: Roger Lynn Schultz, Paul David Ringgenberg, Clark Edward Robison, Robert Ken Michael, Russell Irving Bayh
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Patent number: 5813460Abstract: A downhole tool for early formation evaluation is disclosed. The tool comprising a housing having a fluid passageway and a mandrel having an interior volume. The mandrel is slidably disposed within the housing and has a plurality of axial positions relative to the housing. The mandrel is slidably operated responsive to the fluid pressure within the interior volume such that the mandrel cycles through said plurality of positions. A retractor sleeve is operably associated with the housing and the mandrel for engaging the mandrel and slidably urging the mandrel relative to the housing. The retractor sleeve is slidably operated responsive to the fluid pressure within the interior volume. A seal assembly is slidably disposed around the housing. The seal assembly includes a floating piston.Type: GrantFiled: June 3, 1996Date of Patent: September 29, 1998Assignee: Halliburton Energy Services, Inc.Inventors: Paul D. Ringgenberg, Roger Lynn Schultz, Neal G. Skinner, Margaret C. Waid, Curtis E. Wendler, Robert W. Srubar
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Patent number: 5799733Abstract: An early evaluation system with pump for servicing a well and taking fluid samples and measurements. In each of the embodiments, a formation pump is actuated to flow fluid from the well formation below a packer element engaged with the borehole into a sampling tube. Fluid samplers and recording instruments may be in communication with the sampling tube. In one embodiment, the pump is mechanically actuated by rotation of the tool string. In another embodiment, the pump is hydraulically actuated and has a hydraulic motor connected thereto. In this hydraulically acutated embodiment, fluid pumped down the tool string actuates the hydraulic motor and thereby further actuates the pump. Other pump embodiments are also disclosed. In still another embodiment, the apparatus may be incorporated into a drill string so that a drilling operation may be carried out and immediately followed by a fluid evaluation operation.Type: GrantFiled: September 30, 1997Date of Patent: September 1, 1998Assignee: Halliburton Energy Services, Inc.Inventors: Paul David Ringgenberg, Neal Gregory Skinner, Curtis Edgar Wendler, Roger Lynn Schultz, Robert W. Srubar, Margaret Cowsar Waid
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Patent number: 5687791Abstract: Apparatus and method for testing a well and obtaining a fluid sample therefrom. The apparatus comprises a housing connectable to a tubing string and having a packer at the lower end thereof. The packer is set, and fluid is flowed from a formation or zone of interest into the chamber and then into a sampler in a controlled manner such that the fluid in the housing or sampler does not flash. In one embodiment, a pump is used to flow formation fluid; plugs are used in the housing to first flow dirty fluid and then flow clean fluid into the housing. In another embodiment, a nitrogen cushion is bled slowly to flow fluid into the housing.Type: GrantFiled: December 26, 1995Date of Patent: November 18, 1997Assignee: Halliburton Energy Services, Inc.Inventors: Harold Kent Beck, Roger Lynn Schultz