Patents by Inventor Mark Milkovisch
Mark Milkovisch 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: 20130081879Abstract: A downhole coring tool conveyable within a borehole extending into a subterranean formation, wherein the downhole coring tool comprises a housing, a hollow coring bit extendable from the housing, a first motor operable to rotate the coring bit, and a second motor operable to extend the coring bit into the subterranean formation through a sidewall of the borehole in a direction not substantially parallel to a longitudinal axis of the borehole proximate the downhole coring tool. A static sleeve disposed in but rotationally independent of the coring bit receives a portion of a core sample of the formation resulting from extension of the coring bit into the formation. The static sleeve comprises a protrusion extending radially inward toward the core sample sufficiently to mark the core sample.Type: ApplicationFiled: September 28, 2012Publication date: April 4, 2013Inventors: Richard Dan Ward, Mark Milkovisch, Warren Askew, Gokhan Erol, Bo Yang, Steven E. Buchanan, Jean-Michel Hache, Adam Zygmunt Cygan
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Publication number: 20130075088Abstract: An apparatus comprising first and second fluid intakes, a pump, and a sample chamber, may be positioned in a borehole penetrating a subterranean formation. A method of use thereof may comprise drawing fluid from the subterranean formation and into the first and second fluid intakes using the pump, discharging into the borehole at least a portion of the fluid drawn into the second fluid intake, and selectively diverting at least a portion of the fluid drawn into the first fluid intake to the sample chamber.Type: ApplicationFiled: January 13, 2011Publication date: March 28, 2013Inventors: Mark Milkovisch, Alexander F. Zazovsky, Simon Ross
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Patent number: 8393874Abstract: A pumping system and method to be used within a downhole tool is disclosed herein. The pumping system includes a displacement unit having a cavity formed therein, in which the cavity is configured to receive a fluid therein. A hydraulic driving device and a mechanical driving device are then both included within the system such that both the hydraulic driving device and the mechanical driving device are configured to drive a piston of the displacement unit to receive the fluid within the cavity.Type: GrantFiled: November 24, 2009Date of Patent: March 12, 2013Assignee: Schlumberger Technology CorporationInventors: Alexander Zazovsky, Mark Milkovisch, Pierre Campanac
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Patent number: 8348642Abstract: A downhole tool pumping apparatus comprising a body and an active valve block. The body comprises a cavity housing a reciprocating piston defining first and second chambers within the cavity. The active valve block comprises a plurality of active valves, wherein the plurality of active valves includes a first active valve fluidly connected to the first chamber of the body, the plurality of active valves includes a second active valve fluidly connected to the second chamber of the body, and each of the plurality of active valves is configured to be actively actuated between open and closed positions.Type: GrantFiled: March 27, 2009Date of Patent: January 8, 2013Assignee: Schlumberger Technology CorporationInventors: Willam E. Brennan, Bill Grant, Mark Milkovisch
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Patent number: 8210260Abstract: An apparatus comprising first and second fluid intakes, a pump, and a sample chamber, may be positioned in a borehole penetrating a subterranean formation. A method of use thereof may comprise drawing fluid from the subterranean formation and into the first and second fluid intakes using the pump, discharging into the borehole at least a portion of the fluid drawn into the second fluid intake, and selectively diverting at least a portion of the fluid drawn into the first fluid intake to the sample chamber.Type: GrantFiled: January 20, 2010Date of Patent: July 3, 2012Assignee: Schlumberger Technology CorporationInventors: Mark Milkovisch, Alexander Zazovsky, Simon Ross
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Publication number: 20120132419Abstract: Modular pumpouts and flowline architecture are described. An example apparatus includes a downhole tool to sample fluid from a subterranean formation, and a plurality of fluidly coupled pump modules disposed on the downhole tool. Each of the pump modules includes: a pump having a pump inlet and a pump outlet, where the pump inlet is coupled to a first flowline; a first valve assembly having first, second and third ports, wherein the first port is coupled to the first flowline, the second port is coupled to the pump outlet, and the third port is coupled to the first flowline; and a second flowline not fluidly coupled to the first valve assembly or the pump.Type: ApplicationFiled: November 28, 2011Publication date: May 31, 2012Inventors: Alexander F. Zazovsky, Mark Milkovisch
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Publication number: 20110123368Abstract: A pumping system and method to be used within a downhole tool is disclosed herein. The pumping system includes a displacement unit having a cavity formed therein, in which the cavity is configured to receive a fluid therein. A hydraulic driving device and a mechanical driving device are then both included within the system such that both the hydraulic driving device and the mechanical driving device are configured to drive a piston of the displacement unit to receive the fluid within the cavity.Type: ApplicationFiled: November 24, 2009Publication date: May 26, 2011Inventors: ALEXANDER ZAZOVSKY, Mark Milkovisch, Pierre Campanac
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Publication number: 20110100641Abstract: A method, according to one or more aspects of the present disclosure, for operating a positive displacement pump of a downhole tool comprises supplying a hydraulic pressure to the pump to actuate a two-stroke piston to displace fluid at least partially through the downhole tool; moving the piston in a first stroke direction; and reversing the direction of the piston upon completion of the first stroke of the piston. Completion of a stroke may comprise a head of the piston substantially abutting an end wall of a chamber of the pump.Type: ApplicationFiled: November 3, 2009Publication date: May 5, 2011Inventors: Stephane Briquet, Mark Milkovisch
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Patent number: 7934547Abstract: Apparatus and methods to control fluid flow in a downhole tool are disclosed. A disclosed example system includes a hydraulically actuatable device having a cavity for receiving pressurized hydraulic fluid stored by a reservoir, a first and a second hydraulic pump, a motor and means for selectively flowing hydraulic fluid from the outlet of at least one of the first and second pumps to the at least one cavity. The first and second hydraulic pumps include an inlet fluidly coupled to the reservoir and an outlet fluidly coupled to the cavity, and the motor is operatively coupled to at least one of the pumps.Type: GrantFiled: August 17, 2007Date of Patent: May 3, 2011Assignee: Schlumberger Technology CorporationInventors: Mark Milkovisch, Alexander F. Zazovsky, Stephane Briquet, Christopher S. Del Campo, Raymond V. Nold, III, Jonathan W. Brown, Kenneth L. Havlinek
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Publication number: 20110094757Abstract: An apparatus and a method to seal and prevent leakage within a downhole tool are disclosed herein. The apparatus includes a first body portion having a first fluid flow path formed therethrough and a second body portion having a second fluid flow path formed therethrough. The second body portion is movable between a first position and a second position with respect to the first body portion. The apparatus further includes a stopper connected to the second body portion and disposed within the first body portion. When the second body portion is in the first position, the stopper sealingly engages the first fluid flow path, and when the second body portion is in the second position, the stopper sealingly disengages from the first fluid flow path.Type: ApplicationFiled: April 16, 2010Publication date: April 28, 2011Inventors: Mark Milkovisch, Craig Cumba, Liane Miller, Alejandro Tello
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Publication number: 20100307769Abstract: Downhole tool fluid flow control apparatus including a first fluid valve between a first portion of a first flowline and a second portion of a second flowline. The first and second flowlines are adjacent each other. A second fluid valve is between a second portion of the first flowline and a first portion of the second flowline. The first and second fluid valves are controllable to cause fluid flow between the first portion of the first flowline and the second portion of the second flowline or between the first portion of the second flowline and the second portion of the first flowline.Type: ApplicationFiled: June 5, 2009Publication date: December 9, 2010Inventors: Stephane Briquet, Mark Milkovisch, Scott Dyas, Wade W. Evans, II, Kevin Zanca
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Publication number: 20100175873Abstract: An apparatus comprising first and second fluid intakes, a pump, and a sample chamber, may be positioned in a borehole penetrating a subterranean formation. A method of use thereof may comprise drawing fluid from the subterranean formation and into the first and second fluid intakes using the pump, discharging into the borehole at least a portion of the fluid drawn into the second fluid intake, and selectively diverting at least a portion of the fluid drawn into the first fluid intake to the sample chamber.Type: ApplicationFiled: January 20, 2010Publication date: July 15, 2010Inventors: Mark Milkovisch, Alexander Zazovksy, Simon Ross
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Publication number: 20090260798Abstract: A downhole tool pumping apparatus comprising a body and an active valve block. The body comprises a cavity housing a reciprocating piston defining first and second chambers within the cavity. The active valve block comprises a plurality of active valves, wherein the plurality of active valves includes a first active valve fluidly connected to the first chamber of the body, the plurality of active valves includes a second active valve fluidly connected to the second chamber of the body, and each of the plurality of active valves is configured to be actively actuated between open and closed positions.Type: ApplicationFiled: March 27, 2009Publication date: October 22, 2009Inventors: Willam E. Brennan, III, Bill Grant, Mark Milkovisch
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Publication number: 20090044951Abstract: Apparatus and methods to control fluid flow in a downhole tool are disclosed. A disclosed example system includes a hydraulically actuatable device having a cavity for receiving pressurized hydraulic fluid stored by a reservoir, a first and a second hydraulic pump, a motor and means for selectively flowing hydraulic fluid from the outlet of at least one of the first and second pumps to the at least one cavity. The first and second hydraulic pumps include an inlet fluidly coupled to the reservoir and an outlet fluidly coupled to the cavity, and the motor is operatively coupled to at least one of the pumps.Type: ApplicationFiled: August 17, 2007Publication date: February 19, 2009Applicant: Schlumberger Technology CorporationInventors: Mark Milkovisch, Alexander F. Zazovsky, Stephane Briquet, Christopher S. Del Campo, Raymond V. Nold, III, Jonathan W. Brown, Kenneth L. Havlinek
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Patent number: 7178591Abstract: Techniques for reduced contamination formation evaluation are provided. The techniques relate to drawing fluid into a downhole tool positionable in a wellbore penetrating a subterranean formation having a virgin fluid and a contaminated fluid therein. Fluid is drawn into at least two inlets for receiving the fluids from the formation. At least one evaluation flowline is fluidly connected to at least one of the inlets for passage of the virgin fluid into the downhole tool. At least one cleanup flowline is fluidly connected to the inlets for passage of the contaminated fluid into the downhole tool. At least one fluid circuit is fluidly connected to the evaluation flowline and/or cleanup flowlines for selectively drawing fluid therein. At least one fluid connector is provided for selectively establishing a fluid connection between the flowlines. At least one sensor is provided for measuring downhole parameters in one of the flowlines.Type: GrantFiled: August 31, 2004Date of Patent: February 20, 2007Assignee: Schlumberger Technology CorporationInventors: Christopher S. Del Campo, Raymond V. Nold, III, Noriyuki Matsumoto, Mark Milkovisch, Hisayo Tauchi, Jonathan W. Brown, Ricardo Vasques, Kenneth L. Havlinek
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Publication number: 20060042793Abstract: Techniques for reduced contamination formation evaluation are provided. The techniques relate to drawing fluid into a downhole tool positionable in a wellbore penetrating a subterranean formation having a virgin fluid and a contaminated fluid therein. Fluid is drawn into at least two inlets for receiving the fluids from the formation. At least one evaluation flowline is fluidly connected to at least one of the inlets for passage of the virgin fluid into the downhole tool. At least one cleanup flowline is fluidly connected to the inlets for passage of the contaminated fluid into the downhole tool. At least one fluid circuit is fluidly connected to the evaluation flowline and/or cleanup flowlines for selectively drawing fluid therein. At least one fluid connector is provided for selectively establishing a fluid connection between the flowlines. At least one sensor is provided for measuring downhole parameters in one of the flowlines.Type: ApplicationFiled: August 31, 2004Publication date: March 2, 2006Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Christopher Del Campo, Raymond Nold, Noriyuki Matsumoto, Mark Milkovisch, Hisayo Tauchi, Jonathan Brown, Ricardo Vasques, Kenneth Havlinek