Fluid Flow Causes Pellet To Block Opening In Wall Of Conduit Patents (Class 166/284)
  • Patent number: 9745840
    Abstract: A method of operations in a subterranean formation, including driving a pump with an electrically powered motor to pressurize fluid, inserting a tool into a wellbore that intersects the formation, and directing the pressurized fluid into the wellbore above the tool to push the tool into the wellbore.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: August 29, 2017
    Assignee: US WELL SERVICES LLC
    Inventors: Jared Oehring, Brandon N. Hinderliter
  • Patent number: 9689237
    Abstract: A system and method for use in used in oil and gas wellbores is provided. More specifically, the disclosure relates to barriers or seals used in downhole operations involving activities such as perforating operations and well abandonment operations. The system and method relate to sealing a borehole such as when a well is being abandoned at the end of its productive life. The embodiments are particularly applicable to boreholes containing casing with an inner wall and an outer wall wherein an annulus is formed between the outer wall of the casing and the borehole wall.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: June 27, 2017
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Michael Richard Johnson, Blake Lyndon Arabie
  • Patent number: 9670769
    Abstract: In accordance with some embodiments of the present disclosure, a method of computational modeling for tracking ball sealers in a wellbore is disclosed. The method may include, for a time step, calculating a number of ball sealers to inject into a wellbore, injecting the ball sealers, determining a length of the wellbore occupied by a fluid, and computing a spacing between each ball sealer in the length of the wellbore occupied by the fluid. The method may include calculating a first position of a ball sealer, determining a velocity the ball sealer, and computing a second position of the ball sealer. The method may include recording a number of active ball sealers and open perforations in the wellbore, calculating a ball sealer skin per division, and determining a fluid flow rate. The method may include selecting parameters for a stimulation operation in the wellbore based on the fluid flow rate.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: June 6, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Srinath Madasu, Avi Lin
  • Patent number: 9617841
    Abstract: A hydraulic fracturing ball sealer used in fracturing of shale formations. A preferred embodiment is constructed of a generally spherical core and a pair of hemispherical shells positioned about the core. The shells are secured to each other along an equatorial seam. The multilayer frac-ball provides a strong but machinable structure with a pliable outer surface that is corrosion resistant, has a specific gravity that allows it to float in the fracturing fluid, and is relatively easy and inexpensive to manufacture. The frac-ball of the present invention is a two piece metal and polymer design. A two-part embodiment comprises a polymer core with a metal case or shell. A layer of epoxy resin may be used to secure the shell to the core. Alternate embodiments include multiple layers of different materials, generally arranged concentrically within the spherical shape. The surface of the frac-ball may be smooth, scored, or serrated.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: April 11, 2017
    Inventors: Marvin Boedeker, Michael Raindl, Andrew Houbre, Mark Brodeur, Michael Vieira
  • Patent number: 9535187
    Abstract: A method for characterizing one or more properties of a geological formation including brine, the method including inputting at least one first property of the geological formation into an equation of state (EOS) model, the EOS model accounting for a high temperature effect on the brine; solving the EOS model to determine at least one second property of the geological formation; and outputting the at least one second property to a display device.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: January 3, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Indranil Roy, Oliver C. Mullins, Richard E. Lewis, Colin Longfield, Chris Wilkinson, Paul George, Rashmi Bhavsar
  • Patent number: 9458370
    Abstract: A method for pre-emptively reducing the production of water in an oil and gas well is provided. In one embodiment, a drill-in fluid having a relative permeability modifier (RPM) capable of impeding the production of water is introduced into the wellbore during drilling operations. In a second embodiment, a completion fluid having a relative permeability modifier (RPM) capable of impeding the production of water is introduced into the wellbore during completion operations. The drill-in fluid or completion fluid may further include an organosilicon compound to increase flow resistance and extend the effective RPM permeability application range.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: October 4, 2016
    Assignee: Baker Hughes Incorporated
    Inventors: Harold Dean Brannon, Leonard John Kalfayan, Jeffrey Carl Dawson
  • Patent number: 9447652
    Abstract: An improved ball drop apparatus including an atmosphere-to-pressure frac ball injection chamber. A ball is first inserted into the atmosphere-to-pressure ball injection chamber from a ball feeding apparatus. The ball is then pushed into a pressure equalization section through a first seal pack. In a preferred embodiment, the pressure equalization section is connected to a pressure equalization apparatus and also to the wellbore through a second seal pack. Once the ball is injected into the pressure equalization section, the pressure equalization apparatus applies pressure, thereby causing the pressure of the pressure equalization section to increase until it reaches close to wellbore pressure. Once the pressures of the pressure equalization section and the wellbore are close, the atmosphere-to-pressure frac ball injection chamber and the frac ball are pushed through the second seal pack and into the wellbore, where the frac ball can be pumped downhole.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: September 20, 2016
    Assignee: OIL STATES ENERGY SERVICES, L.L.C.
    Inventors: Danny Artherholt, Bob McGuire, Jeremy Gardner, Dennis Artherholt
  • Patent number: 9316087
    Abstract: In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: April 19, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Curtis L. Boney, Jason Swaren, John Lassek, Ricardo Ariza, Desmond E. Rees, David Ryan Simon, Michael A. Dardis, Darrell P. Davis
  • Patent number: 9212535
    Abstract: In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: December 15, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Philipp Tippel, Elizabeth W. A. Morris, Curtis L. Boney, Jason Swaren, John Lassek, Ricardo Ariza, Desmond E. Rees, David Ryan Simon, Michael A. Dardis, Darrell P. Davis
  • Patent number: 9139928
    Abstract: A method of removing a corrodible downhole article having a surface coating includes eroding the surface coating by physical abrasion, chemical etching, or a combination of physical abrasion and chemical etching, the surface coating comprising a metallic layer of a metal resistant to corrosion by a corrosive material.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: September 22, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Oleg A. Mazyar, Matthew T. McCoy
  • Publication number: 20150129214
    Abstract: In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Inventors: Curtis L. Boney, Jason Swaren, John Lassek, Ricardo Ariza, Desmond E. Rees, David Ryan Simon, Michael A. Dardis, Darrell P. Davis
  • Patent number: 8978760
    Abstract: A method for placing ball sealers within a well formed within a subterranean formation for sealing holes in a casing of the well is carried out by performing at least one of two operations. The first operation involves providing a tag with at least one ball sealer or a carrier fluid containing the at least one ball sealer to facilitate monitoring of the location of the ball sealer. A tag monitoring device is provided within the well for monitoring the location of the tag. The ball sealer and carrier fluid with the tag are introduced downhole into the well. Information from the monitor device regarding the location of the tag is communicated to a remote monitoring location to the thereby provide an indication of the location of the tag within the well to a surface location. In the second operation a container is provided within the well at a known location downhole within the well. The container contains at least one ball sealer.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: March 17, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Sascha Trummer, Eric Clum, Curtis L. Boney, Jorge E. Lopez de Cardenas, Belgin Baser, Jason Swaren
  • Publication number: 20150060069
    Abstract: Swellable ball sealers comprising swellable material are described. A swellable ball sealer may be used as a diversion agent by being suspended in a fluid injected into a wellbore and swelling once seated on a perforation such that the swellable ball sealer adapts to the shape of a perforation opening on which the swellable ball sealer has seated.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 5, 2015
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: DMITRIY IVANOVICH POTAPENKO, EVGENY BORISOVICH BARMATOV
  • Publication number: 20150041133
    Abstract: Methods of controlling flow into a formation through the use of a stimulation valve in a tubular assembly installed in a well. Fluid is pumped into the formation through one or more ports in the stimulation valve. The stimulation valve defines a conduit for flow of fluids through the stimulation valve. The ports are adapted to allow flow of fluids between the conduit and the exterior of the stimulation valve and to receive a ball sealer for shutting off flow of fluids through the ports. The ports then are closed by introducing a plurality of ball sealers into the fluid. The fluid carries the ball sealers into the valve where they seat on and shut off flow of the fluid through the ports.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 12, 2015
    Applicant: Team Oil Tools LP
    Inventor: Stephen J. Chauffe
  • Patent number: 8950438
    Abstract: A method of delivering a concentrated quantity of sealing elements to a leak site in a vessel includes deploying a flexible body of material and at least one sealing element into fluid flowing within the vessel upstream of the leak site. The body of material transports the sealing elements through the vessel to the leak site where the body of material is drawn to the leak by fluid flow created by a pressure differential at the leak site. The sealing element(s) are constrained by the body of material at the leak site such that the sealing element(s) become(s) entrained within the leak.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: February 10, 2015
    Assignee: Brinker Technology Ltd
    Inventor: Nicholas John Ryan
  • Patent number: 8936085
    Abstract: In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: January 20, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Curtis L. Boney, Jason Swaren, John Lassek, Ricardo Ariza, Desmond E. Rees, David Ryan Simon, Michael A. Dardis, Darrel P. Davis
  • Publication number: 20140360720
    Abstract: In one aspect the invention provides a ball injecting apparatus for releasing balls into the wellbore of a well. The apparatus comprises a body having an interior capable of housing one or more balls, at least one window in the body to allow for fluid communication between the body's interior and outside atmosphere. The window also provides for placement and removal of the balls into and out of the body's interior. An opening of suitable dimensions is provided on the body to allow the balls to exit the apparatus. A ball retaining and release mechanism retains and selectively releases the balls out the opening. The interior of the ball injecting apparatus is open to atmospheric pressure during operations. System and method aspects are also provided.
    Type: Application
    Filed: June 6, 2014
    Publication date: December 11, 2014
    Inventor: Jason CORBEIL
  • Patent number: 8851172
    Abstract: High strength, low density ball sealer for sealing openings in oil or gas wells, such as perforations formed through the well casing or openings formed through slidable packers or sleeves received within a tubing string in the well, from the flow of a fluid injected into the well. The ball sealer is formed as having an inner core, and a metal matrix composite layer surrounding the core.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: October 7, 2014
    Assignee: Parker-Hannifin Corporation
    Inventor: Paul A. Dudzinski
  • Publication number: 20140196899
    Abstract: High strength, degradable ball sealer for temporarily sealing off lower zones in a wellbore from the flow of a fluid injected into the well. The degradable ball sealer may also seal openings formed through slidable packers or sleeves received within a tubing string in the well, from the flow of a fluid injected into the well. The ball sealer includes an aluminum-based alloy matrix containing gallium, with graphitic carbon particulate and salt particulate homogeneously distributed within the aluminum-based alloy matrix.
    Type: Application
    Filed: June 13, 2013
    Publication date: July 17, 2014
    Inventors: Stephen W. JORDAN, Kenneth W. CORNETT, Paul A. DUDZINSKI
  • Patent number: 8714250
    Abstract: A multilayered ball sealer having a deformable layer. The multilayered ball sealer has an outer or intermediate layer that is deformable under pressure. In the former, the deformable layer may be water-soluble or hydrolysable. In the latter, the outer layer is a sheath that contains the deformable layer and adapts to its shape. A multilayered ball sealer may be used as a diversion agent by being suspended in a fluid injected into a wellbore and applying pressure to deform the shape of the intermediate layer such that the multilayered ball sealer adapts to the shape of a perforation opening on which the multilayered ball sealer has seated.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: May 6, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Belgin Baser, Curtis L. Boney, Eric Clum, Jorge E. Lopez de Cardenas
  • Patent number: 8657003
    Abstract: Methods of controlling fluid loss, providing fluid diversion, or plugging a portion of a well bore using a treatment fluid including relatively insoluble borate material particulates that are placed into a subterranean formation to provide the desired action and then degrade over time in the subterranean formation in the presence of an aqueous fluid such as water.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: February 25, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Thomas D. Welton, Bradley L. Todd
  • Publication number: 20130341014
    Abstract: A method for placing ball sealers within a well formed within a subterranean formation for sealing holes in a casing of the well is carried out by performing at least one of two operations. The first operation involves providing a tag with at least one ball sealer or a carrier fluid containing the at least one ball sealer to facilitate monitoring of the location of the ball sealer. A tag monitoring device is provided within the well for monitoring the location of the tag. The ball sealer and carrier fluid with the tag are introduced downhole into the well. Information from the monitor device regarding the location of the tag is communicated to a remote monitoring location to the thereby provide an indication of the location of the tag within the well to a surface location. In the second operation a container is provided within the well at a known location downhole within the well. The container contains at least one ball sealer.
    Type: Application
    Filed: August 27, 2013
    Publication date: December 26, 2013
    Applicant: Schlumberger Technology Corporation
    Inventors: Sascha Trummer, Eric Clum, Curtis L. Boney, Jorge E. Lopez de Cardenas, Belgin Baser, Jason Swaren
  • Patent number: 8561696
    Abstract: A method for placing ball sealers within a well formed within a subterranean formation for sealing holes in a casing of the well is carried out by performing at least one of two operations. The first operation involves providing a tag with at least one ball sealer or a carrier fluid containing the at least one ball sealer to facilitate monitoring of the location of the ball sealer. A tag monitoring device is provided within the well for monitoring the location of the tag. The ball sealer and carrier fluid with the tag are introduced downhole into the well. Information from the monitor device regarding the location of the tag is communicated to a remote monitoring location to the thereby provide an indication of the location of the tag within the well to a surface location. In the second operation a container is provided within the well at a known location downhole within the well. The container contains at least one ball sealer.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: October 22, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Sascha Trummer, Eric Clum, Curtis L. Boney, Jorge E. Lopez de Cardenas, Belgin Baser, Jason Swaren
  • Publication number: 20130192828
    Abstract: An apparatus and method are provided for substantially sealing an opening defined by a hydrocarbon well downhole component, wherein an interior portion of the downhole component is in fluid communication with a formation surrounding the hydrocarbon well. The apparatus includes a deformable plug adaptable to being injected into the wellbore and carried through the wellbore in a fluid. The fluid carrying the deformable plug can flow through the opening and the deformable plug is sized and configured such that at least a portion of the deformable plug can deform to the contour of the opening and seat in the opening. The deformable plug is capable of swelling, hardening, or compressing such that the deformable plug forms a substantially sealed relationship with the hydrocarbon well downhole component such that the interior portion of the downhole component ceases to be in fluid communication with the formation surrounding the well.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 1, 2013
    Applicant: JJBM Properties, LLC
    Inventors: Glen Mitchell Kniffin, John David Harkrider, William Lee Anthony, Jeff S. Jordan
  • Publication number: 20130175033
    Abstract: A technique provides a system and methodology for treating a plurality of zones, e.g. well zones. A plurality of flow control devices is located along a tubular structure, such as a well string in a wellbore. Each flow control device or each set of flow control devices comprises a seat member having a unique profile relative to the profiles of the other flow control devices. Drop objects are designed with engagement features arranged to engage the profiles of specific flow control devices. For example, each drop object may have an engagement feature of a corresponding profile designed to engage the unique profile of a specific flow control device or of a specific set of flow control devices to enable actuation of the specific flow control device or the specific set of flow control devices once the drop object is dropped through the tubular structure.
    Type: Application
    Filed: January 11, 2012
    Publication date: July 11, 2013
    Inventors: Jason Baihly, Don Aldridge
  • Patent number: 8474534
    Abstract: Flow control devices can include functionalized surfaces on inner regions of walls. A functionalized surface can include a hydrophilic and/or a hydrophobic material that can affect fluid flowing in a flow path of a wall to facilitate fluid selection by the flow control device. Fluids may be switched in a flow control device using a functionalized surface even when a density and viscosity of different oil and water mixtures of the fluids are the same.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: July 2, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael Linley Fripp, Michael T. Pelletier, Jason D. Dykstra
  • Publication number: 20130161005
    Abstract: A dart launcher launches a dart by placing the dart within a launcher bore formed within a launcher body. The launcher body also defines a central bore coupled inline with a tubing string and in fluid communication with the launcher bore. The launcher bore is formed at an angle to the central bore. A release assembly is coupled to the launcher body and includes a release rod protruding into the launcher bore to selectively release the dart. A visual indicator assembly is coupled to the launcher body downstream from the release assembly and includes a flapper protruding into the launcher bore. The release assembly is actuated by the dart rotating the flapper to rotate an arm from a non-released position to a released position.
    Type: Application
    Filed: December 27, 2011
    Publication date: June 27, 2013
    Applicant: VETCO GRAY INC.
    Inventors: Chad Eric Yates, Shripad Hedge, Dinesh Narayan
  • Publication number: 20120273198
    Abstract: A universal dart launcher launches a dart by moving a dart from a first position to a second position. The universal dart launcher has a launcher body defining a central bore having an axis and lower and upper ends configured to attach to a string of pipe. A cartridge housed within the launcher body may move perpendicular to the axis from a first position to a second position. A drop member is positioned within the cartridge so that it will not be in axial alignment with the central bore while in the first position, and will be in axial alignment with the central bore while in the second position. An actuator assembly couples to the launcher body to move the cartridge from the first position to the second position when actuated.
    Type: Application
    Filed: April 29, 2011
    Publication date: November 1, 2012
    Applicant: VETCO GRAY INC.
    Inventors: Nicholas Peter Gette, Marc Minassian, James Christopher Clingman
  • Publication number: 20120234538
    Abstract: Herein disclosed is a frac ball comprising three orthogonal axes x, y, and z; wherein the frac ball has approximately equal strength in each direction of the three axes x, y, and z. In an embodiment, the frac ball comprises a resin. In an embodiment, the frac ball comprises glass fibers or carbon fibers or both. In an embodiment, the frac ball comprises an equal amount of glass fibers in each direction of the x, y, and z axes. In an embodiment, the frac ball comprises glass fibers in the x and y axes and carbon fibers in the z axis. In an embodiment, the frac ball comprises no interlaminar layers. In an embodiment, the frac ball has different diameters. Also disclosed herein are methods of making and using such frac balls.
    Type: Application
    Filed: December 15, 2011
    Publication date: September 20, 2012
    Applicant: General Plastics & Composites, LP
    Inventors: Tracy Martin, Jesus IgnacĂ­o Chavez
  • Publication number: 20120085538
    Abstract: A technique that is usable with a well includes deploying a plurality of location markers in a passageway of the well and deploying an untethered object in the passageway such that the object travels downhole via the passageway. The technique includes using the untethered object to sense proximity of at least some of the location markers as the object travels downhole, and based on the sensing, selectively expand its size to cause the object to become lodged in the passageway near a predetermined location.
    Type: Application
    Filed: May 20, 2011
    Publication date: April 12, 2012
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Julio C. Guerrero, Gary L. Rytlewski, Bruno Lecerf, Michael J. Bertoja, Christian Ibeagha, Alex Moody-Stuart, Adam Mooney, Jay Russell, Christopher Hopkins, Adam Paxson, Billy Anthony, Dinesh R. Patel
  • Patent number: 8136585
    Abstract: An apparatus for successively releasing balls into a wellbore during wellbore operations is disclosed. The apparatus has a radial housing having at least one radial ball array having two or more radial bores. Each radial bore houses a ball cartridge adapted to receive and release balls and an actuator for operably aligning or misaligning the ball cartridge with an axial bore in fluid communication with the wellbore. The ball cartridge is moveable along the radial bore and is operable between an aligned position, for releasing a ball and a misaligned position for storing the ball.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: March 20, 2012
    Assignee: Isolation Equipment Services, Inc.
    Inventor: Boris (Bruce) P Cherewyk
  • Patent number: 8043997
    Abstract: A lost circulation material and method for well treatment employing the material that is effective at sealing or plugging small fissures and large fractures and has utility over a wide range of temperatures, including high temperatures. The material has an optimized bimodal particle distribution and optionally has a polymer flocculent or water swellable polymer.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: October 25, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventors: Donald L. Whitfill, Cindy C. Fang, Matthew Miller
  • Publication number: 20100288496
    Abstract: An apparatus for successively releasing balls into a wellbore during wellbore operations is disclosed. The apparatus has a radial housing having at least one radial ball array having two or more radial bores. Each radial bore houses a ball cartridge adapted to receive and release balls and an actuator for operably aligning or misaligning the ball cartridge with an axial bore in fluid communication with the wellbore. The ball cartridge is moveable along the radial bore and is operable between an aligned position, for releasing a ball and a misaligned position for storing the ball.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 18, 2010
    Applicant: ISOLATION EQUIPMENT SERVICES, INC.
    Inventor: Boris (Bruce) P. CHEREWYK
  • Patent number: 7832473
    Abstract: A method is disclosed for controlling the flow of fluid between a downhole formation and a base pipe located in wellbore proximate the downhole formation. A plurality of chokes are established between the formation and the base pipe to regulate the flow of fluid between the formation and the base pipe. In one embodiment, each choke comprises a nozzle formed in the base pipe. In another embodiment, each choke comprises a nozzle in a housing arranged on the base pipe. A plurality of plugs are pumped downhole for engagement with the nozzles. The pressure in the wellbore is then increased until the plugs engage each nozzle. In an alternative embodiment, plugs are pumped downhole and stop up the housing containing the nozzles. Fluid flow between the base pipe and the downhole formation may be reestablished by dissolving the plugs or by back-flowing the production string to dislodge them.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: November 16, 2010
    Assignee: Schlumberger Technology Corporation
    Inventor: Rolf Emil Pensgaard
  • Publication number: 20100200235
    Abstract: Methods and compositions that include a method of treating a subterranean formation comprising the steps of providing a carrier fluid comprising degradable balls that comprise a carboxylic acid, a fatty alcohol, a fatty acid salt, a fatty ester, a fatty acid salt, or a combination thereof, and introducing the carrier fluid to the subterranean formation during a treatment.
    Type: Application
    Filed: February 11, 2009
    Publication date: August 12, 2010
    Inventors: Hongyu Luo, Dwight D. Fulton
  • Patent number: 7681635
    Abstract: An example of a method includes providing a hydrajetting tool in a well bore in a formation; injecting a fluid through the tool into a first region of the formation at a velocity sufficient to form one or more perforation tunnels; maintaining the flow of fluid into the perforation tunnels at a pressure greater than the fracture closure pressure, so as to create one or more fractures in the first region; plugging at least partially the fractures with an isolation fluid; injecting a fluid through the hydrajetting tool into a second region of the formation at a velocity sufficient to form one or more perforation tunnels in the second region; and maintaining the flow of fluid into the perforation tunnels in the second region at a pressure greater than the fracture closure pressure, so as to create one or more fractures in the second region.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: March 23, 2010
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Leldon Mark Farabee, Ruben A. Alba
  • Patent number: 7647964
    Abstract: Described is an oil-degradable ball sealer for use in the oil and gas industry. The ball seal comprises a particular composition including ethylene and one or more alpha-olefins, prepared by an injection molding technique to provide a ball sealer which will dissolve in stimulation or wellbore fluids after stimulation operations are complete. The composition, when dissolved into wellbore fluids, does not pose a hazard or problem to aqueous wellbore fluids or further wellbore stimulations.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: January 19, 2010
    Assignee: Fairmount Minerals, Ltd.
    Inventors: Syed Akbar, Patrick R. Okell, A. Richard Sinclair
  • Publication number: 20090255674
    Abstract: In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both.
    Type: Application
    Filed: April 15, 2008
    Publication date: October 15, 2009
    Inventors: Curtis L. Boney, Jason Swaren, John Lassek, Ricardo Ariza, Desmond E. Rees, David Ryan Simon, Michael A. Dardis, Darrel P. Davis
  • Publication number: 20090101334
    Abstract: A multilayered ball sealer having a deformable layer. The multilayered ball sealer has an outer or intermediate layer that is deformable under pressure. In the former, the deformable layer may be water-soluble or hydrolysable. In the latter, the outer layer is a sheath that contains the deformable layer and adapts to its shape. A multilayered ball sealer may be used as a diversion agent by being suspended in a fluid injected into a wellbore and applying pressure to deform the shape of the intermediate layer such that the multilayered ball sealer adapts to the shape of a perforation opening on which the multilayered ball sealer has seated.
    Type: Application
    Filed: October 15, 2008
    Publication date: April 23, 2009
    Inventors: Belgin Baser, Curtis L. Boney, Eric Clum, Jorge E. Lopez de Cardenas
  • Patent number: 7225869
    Abstract: The present invention is directed to a method of isolating hydrajet stimulated zones from subsequent well operations. The method includes the step of drilling a wellbore into the subterranean formation of interest. Next, the wellbore may or may not be cased depending upon a number of factors including the nature and structure of the subterranean formation. Next, the casing, if one is installed, and wellbore are perforated using a high pressure fluid being ejected from a hydrajetting tool. A first zone of the subterranean formation is then fractured and stimulated. Next, the first zone is temporarily plugged or partially sealed by installing an isolation fluid into the wellbore adjacent to the one or more fractures and/or in the openings thereof, so that subsequent zones can be fractured and additional well operations can be performed.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: June 5, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ronald M. Willett, Jim B. Surjaatmadja, Billy W. McDaniel, Leldon Mark Farabee, David M. Adams, Loyd E. East
  • Patent number: 7069994
    Abstract: Method for hydraulic fracturing of wells by transporting a cross-linked polymer containing a proppant down a wellbore in a carrier fluid, allowing the cross-linked polymer to coalesce into a polymer phase and squeezing the cross-linked polymer as a fracturing fluid is provided. Composition of the cross-linked polymer solution and the selection of additives may be varied to adjust the viscosity, degradation time and other properties of the fracturing fluid.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: July 4, 2006
    Inventor: Claude E. Cooke, Jr.
  • Patent number: 6942033
    Abstract: A technique that is usable with a subterranean well includes orienting shaped charges of a perforating gun to extend partially around a longitudinal axis of the gun. The perforating gun is oriented in the well to direct the shaped charges away from a water boundary. In response to this orientation of the perforating gun, the shaped charges are fired. The perforating gun and shaped charges may also be oriented in a deviated well to compensate for the anisotropic permeability of a formation.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: September 13, 2005
    Assignee: Schlumberger Technology Corporation
    Inventors: James E. Brooks, Jorge Lopez de Cardenas
  • Patent number: 6803347
    Abstract: A low molecular weight, high melting point, crystalline, oil soluble additive for use in wellbore fluids is provided that is preferably a ground crystalline material of melting point over 80° C., preferably over 100° C. which is readily soluble in produced hydrocarbons such as crude oil and lighter condensates, and which exhibits a molecular weight of less than 1000, and preferably less than 500, and more preferably less than 300. Its particle size can be adjusted to bridge efficiently across different pore size formations and control its solubility rate.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: October 12, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Hemant K. J. Ladva, Christopher A. Sawdon, Paul R. Howard
  • Patent number: 6777377
    Abstract: A composition for sealing porous subterranean formations comprises a mixture of a water-swellable clay and a water insoluble, water absorbent, water-swellable polymer, wherein the mixture is coated with a material that is resistant to penetration by water. The water penetration resistant material helps the delay the onset of swelling of the clay and polymer until it reaches the formations intended for sealing. Mixing the clay with the water-swellable polymer prior to coating assists in coating of the water-swellable polymer with the water penetration resistant material. The coated mixture can be suspended in an aqueous liquid, and then pumped into a subterranean cavity to seal porous formations therein.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: August 17, 2004
    Assignee: Wyo-Ben, Inc.
    Inventors: Kent R. Myers, Richard K. Brown, Stewart W. Krause, Shobha B. Parekh, Robert W. Stichman
  • Patent number: 6543538
    Abstract: This invention provides a method for treating multiple intervals in a wellbore by perforating at least one interval then treating and isolating the perforated interval(s) without removing the perforating device from the wellbore during the treatment or isolation. The invention can be applied to hydraulic fracturing with or without proppant materials as well as to chemical stimulation treatments.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: April 8, 2003
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Randy C. Tolman, Kris J. Nygaard, Abdel Wadood M. El-Rabaa, William A. Sorem
  • Publication number: 20020007949
    Abstract: This invention provides a method for treating multiple intervals in a wellbore by perforating at least one interval then treating and isolating the perforated interval(s) without removing the perforating device from the wellbore during the treatment or isolation. The invention can be applied to hydraulic fracturing with or without proppant materials as well as to chemical stimulation treatments.
    Type: Application
    Filed: June 25, 2001
    Publication date: January 24, 2002
    Inventors: Randy C. Tolman, Kris J. Nygaard, A. M. El-Rabaa, William A. Sorem
  • Patent number: 6186230
    Abstract: This invention provides a method for designing a multiple-stage ball sealer-diverted fracture treatment so that only one set of perforations is fractured by each stage of fluid pumped. It further provides a method for predicting the sequencing in which perforated intervals will fracture during treatment.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: February 13, 2001
    Assignee: ExxonMobil Upstream Research Company
    Inventor: Dale E. Nierode
  • Patent number: 6059032
    Abstract: A method and apparatus for treating a long interval within a wellbore wherein a treatment fluid is delivered to selected levels within the interval by blocking flow to certain zones while allowing flow to others. A treatment tube extends substantially through the interval and is comprised of a perforated conduit which is open at its upper end and which has a plurality of openings spaced along its length. Each of the openings have a valve seat within the conduit at its entrance which is adapted to receive a valve to seal and block flow through that opening. In operation, a treatment fluid is flowed through the treatment tube and out the openings into different levels within wellbore. At desired intervals, the valve are introduced into the treatment fluid and are carried into the treatment tube to seat at a respective opening to thereby block flow through that opening while allowing continued flow through others.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: May 9, 2000
    Assignee: Mobil Oil Corporation
    Inventor: Lloyd G. Jones
  • Patent number: 5934377
    Abstract: A method for isolating subterranean formations or zones intersected by a single wellbore is provided. The method comprises perforating a zone intersected by the wellbore and pumping a sealing means into the wellbore to seal against the side of the casing above and below the perforations to prevent communication from the zone into the wellbore after the casing has been perforated. The method further comprises fracturing the zone through the perforations prior to sealing and thus isolating the zone. Other zones thereabove are likewise perforated, fractured, sealed and thus isolated by pumping sealing means into the wellbore to seal the casing adjacent the perforations to prevent communication from the affected zones into the wellbore.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: August 10, 1999
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Ronald E. Savage
  • Patent number: 5890536
    Abstract: A method for stimulating production from wells drilled into natural gas reservoirs characterized by lenticular deposits. The reservoir thickness through which the wells are drilled is divided into multi-stage zones that are further divided into single-stage zones. Each single-stage zone is perforated and then fractured. The fracturing is conducted in multiple stages to sequentially fracture each of the single-stage zones within a multi-stage zone; the fracturing stages being separated by ball sealers. Well spacing may also be controlled to match fracture drainage and size of the lenticular deposits.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: April 6, 1999
    Assignee: Exxon Production Research Company
    Inventors: Dale E. Nierode, Walter J. Lamb