Patents by Inventor Julian J. Pop
Julian J. Pop 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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Publication number: 20090200016Abstract: A downhole tool for extracting a sample from a subsurface formation includes an emitter of electromagnetic energy configured to heat water in the subsurface formation. A method for extracting a sample from a subsurface formation involves conveying a downhole tool in a wellbore drilled through the subsurface formation, the downhole tool having an emitter of electromagnetic energy configured to heat water in the subsurface formation, and actuating the emitter to expose a portion of the formation to electromagnetic energy.Type: ApplicationFiled: January 29, 2009Publication date: August 13, 2009Inventors: Anthony R.H. Goodwin, Julian J. Pop, Stephen Yeldell, Jason Hueber, Pierre-Yves Corre, Stephane Briquet, Alexander Zazovsky, Carsten Sonne
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Publication number: 20090194279Abstract: Methods and apparatuses for sampling fluid from a subterranean formation penetrated by a wellbore are provided. The subterranean formation has clean formation fluid therein, and the wellbore has a contaminated fluid therein extending into an invaded zone about the wellbore. A shaft is extended from a housing and positioned in a perforation in a sidewall of the wellbore. At least one flowline extends through the shaft and into the housing. The flowline(s) are adapted to receive downhole fluids through the perforation. At least one fluid restrictor, such as a packer, injection fluid or flow inhibitor, may be used to isolate at least a portion of the perforation whereby contaminated fluid is prevented from entering the isolated portion of the perforation. At least one pump selectively draws fluid into the flowline(s).Type: ApplicationFiled: November 25, 2008Publication date: August 6, 2009Inventors: Jeffrey A. Tarvin, Julian J. Pop, Simon H. Bittleston, Angus J. Melbourne, Rogerio T. Ramos
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Patent number: 7565835Abstract: A method of sampling fluid from a rock formation penetrated by a borehole includes positioning a downhole tool having a flow line in the borehole, establishing an inlet port through which fluid passes from a first point in the formation into the flow line, establishing an outlet port through which fluid passes from the flow line into a second point in the formation, and passing fluid between the formation and the flow line through the inlet and outlet ports.Type: GrantFiled: November 15, 2005Date of Patent: July 28, 2009Assignee: Schlumberger Technology CorporationInventors: Simon H. Bittleston, Jonathan W. Brown, Julian J. Pop, Ashley C. Kishino, Christopher S. Del Campo
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Publication number: 20090158837Abstract: A system for testing a subterranean formation penetrated by a well includes a downhole tool configured to be coupled to a work string that includes a tool body having a longitudinal bore for circulating a fluid and at least one aperture configured to receive at least one module. The system further includes a plurality of modules that are each configured to engage the at least one aperture and at least one cavity configured for receiving a probe, and a plurality of probes that each include at least one orifice configured for testing the formation, wherein a first of the plurality of probes has a first configuration and a second of the plurality of probes has a second configuration.Type: ApplicationFiled: February 26, 2009Publication date: June 25, 2009Applicant: Schlumberger Technology CorporationInventors: Dale Meek, Julian J. Pop, Robert W. Sundquist, Alain P. Dorel, Thomas D. MacDougall
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Publication number: 20090126996Abstract: A sample module for a sampling while drilling tool includes a sample fluid flowline operatively connectable between a sample chamber and an inlet, for passing a downhole fluid. A primary piston divides the sample chamber into a sample volume and a buffer volume and includes a first face in fluid communication with the sample volume and a second face in fluid communication with the buffer volume. An agitator is disposed in the sample volume for agitating the sample fluid. A secondary piston includes a first face in fluid communication with the buffer volume having buffer fluid disposed therein and a second face.Type: ApplicationFiled: January 19, 2009Publication date: May 21, 2009Inventors: Steven G. Villareal, Julian J. Pop, Kent D. Harms, Victor M. Bolze, Reinmart Ciglenec, Michael J. Stucker, Khanh Duong
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Publication number: 20090049889Abstract: A method for determining a property of formations surrounding an earth borehole being drilled with a drill bit at the end of a drill string, using drilling fluid that flows downward through the drill string, exits through the drill bit, and returns toward the earth's surface in the annulus between the drill string and the periphery of the borehole, including the following steps: obtaining, downhole near the drill bit, a pre-bit sample of the mud in the drill string as it approaches the drill bit; obtaining, downhole near the drill bit, a post-bit sample of the mud in the annulus, entrained with drilled earth formation, after its egression from the drill bit; implementing pre-bit measurements on the pre-bit sample; implementing post-bit measurements on the post-bit sample; and determining a property of the formations from the post-bit measurements and the pre-bit measurements.Type: ApplicationFiled: October 29, 2008Publication date: February 26, 2009Inventors: JULIAN J. POP, Reza Taherian, Martin E. Poitzsch, Jacques R. Tabanou
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Publication number: 20090050369Abstract: A method for determining a property of formations surrounding an earth borehole being drilled with a drill bit at the end of a drill string, using drilling fluid that flows downward through the drill string, exits through the drill bit, and returns toward the earth's surface in the annulus between the drill string and the periphery of the borehole, including the following steps: obtaining, downhole near the drill bit, a pre-bit sample of the mud in the drill string as it approaches the drill bit; obtaining, downhole near the drill bit, a post-bit sample of the mud in the annulus, entrained with drilled earth formation, after its egression from the drill bit; implementing pre-bit measurements on the pre-bit sample; implementing post-bit measurements on the post-bit sample; and determining a property of the formations from the post-bit measurements and the pre-bit measurements.Type: ApplicationFiled: October 29, 2008Publication date: February 26, 2009Inventors: Julian J. Pop, Reza Taherian, Martin E. Poitzsch, Jacques R. Tabanou
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Patent number: 7469746Abstract: Methods and apparatuses for sampling fluid from a subterranean formation penetrated by a wellbore are provided. The subterranean formation has clean formation fluid therein, and the wellbore has a contaminated fluid therein extending into an invaded zone about the wellbore. A shaft is extended from a housing and positioned in a perforation in a sidewall of the wellbore. At least one flowline extends through the shaft and into the housing. The flowline(s) are adapted to receive downhole fluids through the perforation. At least one fluid restrictor, such as a packer, injection fluid or flow inhibitor, may be used to isolate at least a portion of the perforation whereby contaminated fluid is prevented from entering the isolated portion of the perforation. At least one pump selectively draws fluid into the flowline(s).Type: GrantFiled: January 31, 2008Date of Patent: December 30, 2008Assignee: Schlumberger Technology CorporationInventors: Jeffrey A. Tarvin, Julian J. Pop, Simon H. Bittleston, Angus J. Melbourne, Rogerio T. Ramos
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Patent number: 7458257Abstract: A method for determining a property of formations surrounding an earth borehole being drilled with a drill bit at the end of a drill string, using drilling fluid that flows downward through the drill string, exits through the drill bit, and returns toward the earth's surface in the annulus between the drill string and the periphery of the borehole, including the following steps: obtaining, downhole near the drill bit, a pre-bit sample of the mud in the drill string as it approaches the drill bit; obtaining, downhole near the drill bit, a post-bit sample of the mud in the annulus, entrained with drilled earth formation, after its egression from the drill bit; implementing pre-bit measurements on the pre-bit sample; implementing post-bit measurements on the post-bit sample; and determining a property of the formations from the post-bit measurements and the pre-bit measurements.Type: GrantFiled: December 19, 2005Date of Patent: December 2, 2008Assignee: Schlumberger Technology CorporationInventors: Julian J. Pop, Reza Taherian, Martin E. Poitzsch, Jacques R. Tabanou
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Publication number: 20080156487Abstract: A fluid sampling system retrieves a formation fluid sample from a formation surrounding a wellbore extending along a wellbore axis, wherein the formation has a virgin fluid and a contaminated fluid therein. The system includes a sample inlet, a first guard inlet positioned adjacent to the sample inlet and spaced from the sample inlet in a first direction along the wellbore axis, and a second guard inlet positioned adjacent to the sample inlet and spaced from the sample inlet in a second, opposite direction along the wellbore axis.Type: ApplicationFiled: December 27, 2006Publication date: July 3, 2008Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Alexander F. Zazovsky, Colin Longfield, Julian J. Pop, Thomas H. Zimmerman, John D. Sherwood, Keith A. Burgess
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Publication number: 20080121394Abstract: Methods and apparatuses for sampling fluid from a subterranean formation penetrated by a wellbore are provided. The subterranean formation has clean formation fluid therein, and the wellbore has a contaminated fluid therein extending into an invaded zone about the wellbore. A shaft is extended from a housing and positioned in a perforation in a sidewall of the wellbore. At least one flowline extends through the shaft and into the housing. The flowline(s) are adapted to receive downhole fluids through the perforation. At least one fluid restrictor, such as a packer, injection fluid or flow inhibitor, may be used to isolate at least a portion of the perforation whereby contaminated fluid is prevented from entering the isolated portion of the perforation. At least one pump selectively draws fluid into the flowline(s).Type: ApplicationFiled: January 31, 2008Publication date: May 29, 2008Applicant: Schlumberger Technology CorporationInventors: Jeffrey A. Tarvin, Julian J. Pop, Simon H. Bittleston, Angus J. Melbourne, Rogerio T. Ramos
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Publication number: 20080115575Abstract: A system for testing a subterranean formation penetrated by a well includes a downhole tool configured to be coupled to a work string that includes a tool body having a longitudinal bore for circulating a fluid and at least one aperture configured to receive at least one module. The system further includes a plurality of modules that are each configured to engage the at least one aperture and at least one cavity configured for receiving a probe, and a plurality of probes that each include at least one orifice configured for testing the formation, wherein a first of the plurality of probes has a first configuration and a second of the plurality of probes has a second configuration.Type: ApplicationFiled: May 30, 2007Publication date: May 22, 2008Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Dale Meek, Julian J. Pop, Robert W. Sundquist, Alain P. Dorel, Thomas D. MacDougall
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Publication number: 20080078581Abstract: A formation fluid sampling tool is provided with a drill which drills into the formation in a manner perpendicular or oblique to the borehole wall. Preferably the tool introduces a mechanism into the drilled hole for enhancing the mobility of the reservoir fluid. In one embodiment the mechanism is a heating element on the drill. In another embodiment, the mechanism is hot fluid which is generated in the tool and injected into the drilled hole. In another embodiment, the mechanism is a solvent which is stored in the tool and injected by the tool into the drilled hole.Type: ApplicationFiled: June 14, 2007Publication date: April 3, 2008Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Anthony R.H. Goodwin, Peter S. Hegeman, Julian J. Pop, Ashley C. Kishino, Gary J. Tustin, Raymond V. Nold, Kai Hsu, Christopher S. Del Campo, Ricardo Vasques
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Patent number: 7347262Abstract: Methods and apparatuses for sampling fluid from a subterranean formation penetrated by a wellbore are provided. The subterranean formation has clean formation fluid therein, and the wellbore has a contaminated fluid therein extending into an invaded zone about the wellbore. A shaft is extended from a housing and positioned in a perforation in a sidewall of the wellbore. At least one flowline extends through the shaft and into the housing. The flowline(s) are adapted to receive downhole fluids through the perforation. At least one fluid restrictor, such as a packer, injection fluid or flow inhibitor, may be used to isolate at least a portion of the perforation whereby contaminated fluid is prevented from entering the isolated portion of the perforation. At least one pump selectively draws fluid into the flowline(s).Type: GrantFiled: June 18, 2004Date of Patent: March 25, 2008Assignee: Schlumberger Technology CorporationInventors: Jeffrey A. Tarvin, Julian J. Pop, Simon H. Bittleston, Angus J. Melbourne, Rogerio T. Ramos
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Patent number: 7222671Abstract: A viscometer for a down hole tool positionable in a well bore penetrating a subterranean formation is described. The formation contains at least one fluid therein. The down hole tool is adapted to convey at least a portion of the fluid to the viscometer. The viscometer comprises a sensor unit, and at least one magnet. The sensor unit is positionable within the down hole tool and comprises at least two spatially disposed clamps and a wire suspended in tension between the at least two clamps such that the wire is available for interaction with the fluid when the viscometer is positioned within the down hole tool and the down hole tool is positioned within the subterranean formation and receives the fluid from the subterranean formation.Type: GrantFiled: December 23, 2004Date of Patent: May 29, 2007Assignee: Schlumberger Technology CorporationInventors: Derek Caudwell, Anthony R. H. Goodwin, Martin Trusler, Michael W. Frels, Kai Hsu, Jonathan W. Brown, Julian J. Pop, Bunker M. Hill, Andrew L. Kurkjian
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Patent number: 7031841Abstract: A method for determining formation pressure at a depth region of formations surrounding a borehole, including: keeping track of the time since cessation of drilling at the depth region; deriving formation permeability at the depth region; causing wellbore pressure to vary periodically in time and determining, at the depth region, the periodic and non-periodic component of pressure measured in the formations; determining, using the time, the periodic component and the permeability, the formation pressure diffusivity and transmissibility and an estimate of the size of the pressure build-up zone around the wellbore at the depth region; determining, using the time, the formation pressure diffusivity and transmissibility, and the non-periodic component, the leak-off rate of the mudcake at the depth region; determining, using the leak-off rate, the pressure gradient at the depth region; and extrapolating, using the pressure gradient and the size of the build-up zone, to determine the formation pressure.Type: GrantFiled: January 30, 2004Date of Patent: April 18, 2006Assignee: Schlumberger Technology CorporationInventors: Alexander Zazovsky, Julian J. Pop, Paul S. Hammond
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Patent number: 4936139Abstract: The apparatus of the present invention relates to a down hole tool capable of extraction of valid samples and making pressure measurements useful in calculating formation permeability. The tool incorporates the features of a straddle packer to allow formation fluid specimens to be taken at large flow rates without depressing the pressure below the formation fluid bubble point. When used in combination with a pressure probe the tool is used to obtain meaningful permeability readings in a larger radius area than previously permitted with known designs. Additionally, the apparatus of the present invention allows flow control during the creation of the pressure pulse which enhances extraction of valid samples and the permeability determination.Type: GrantFiled: July 10, 1989Date of Patent: June 26, 1990Assignee: Schlumberger Technology CorporationInventors: Thomas H. Zimmerman, Julian J. Pop, Joseph L. Perkins
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Patent number: 4860581Abstract: The apparatus of the present invention relates to a down hole tool capable of extraction of valid samples and making pressure measurements useful in calculating formation permeability. The tool incorporates the features of a staddle packing to allow formation fluid specimens to be taken at large flow rates without depressing the pressure below the formation fluid bubble point. When used in combination with a pressure probe the tool is used to obtain meaningful permeability readings in a larger radius area than previously permitted with known dsigns. Additionally, the apparatus of the present invention allows flow control during the creation of the pressure pulse which enhances extraction of valid samples and the permeability determination.Type: GrantFiled: September 23, 1988Date of Patent: August 29, 1989Assignee: Schlumberger Technology CorporationInventors: Thomas H. Zimmerman, Julian J. Pop, Joseph L. Perkins