With Downflow Past Piston Patents (Class 166/155)
  • Patent number: 10415333
    Abstract: Apparatus and methods for reducing differential pressure sticking of a drill string stuck against a sidewall of a wellbore by decreasing hydrostatic pressure around the drill string within the wellbore. Drilling fluid is displaced out of the wellbore by injecting a displacement fluid into an annulus defined between the sidewall and an exterior of the drill string, and pressure of the injected displacement fluid within the annulus is decreased by bleeding the injected displacement fluid out of the annulus.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: September 17, 2019
    Assignee: Schlumberger Technology Corporation
    Inventor: Norbert Heitmann
  • Patent number: 10260306
    Abstract: The present casing wiper plug system and method includes a novel top wiper plug and a dissolvable blocking element. The top wiper plug includes a rupture disk and an open tail section configured and dimensioned to receive the dissolvable blocking element. The blocking element can be dissolved by a solvent and can dissolve quickly given the size or materials of the blocking element. When used in conjunction with a bottom wiper plug and a displacement fluid, the central bores of the top and bottom wiper plugs and shoe track provide an open passage to the formation allowing future injection or fracking fluid to access the formation. The blocking element is released into a seat of the open tail section to temporarily block the passage so a casing test can be performed on the casing. After the test is complete, the blocking element is dissolved to reopen the passage.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: April 16, 2019
    Assignee: Gryphon Oilfield Solutions, LLC
    Inventors: Ian Beckett, Tyler Roberts, Geoff Williams
  • Patent number: 10196308
    Abstract: A cementing method includes positioning a bottom plug at a casing shoe, rupturing the bottom plug, signaling when a top plug reaches a target position, and releasing a chemical into a cement slurry below the top plug in response to the signaling. The signal may comprise a mechanical trigger changing its position due to movement of the top plug past the target position.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 5, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Vijay Gupta, Mark Roberson, David F. Myers, James Lynn Davis, David Dausch
  • Patent number: 10151193
    Abstract: The present disclosure relates to an inspection assembly (10) for inspecting the interior of a pipe (12). The inspection assembly (10) comprises a sensor assembly (20) adapted to receive a sensor signal and a housing (22) within which the sensor assembly (20) is at least partially arranged. The inspection assembly (10) comprises a seal (24) at a first housing end (31). Moreover, the inspection assembly (10) is adapted to assume a transport condition in which the sensor assembly (20) is positioned in a first position in the housing (22) and in which the seal (24) is closed. The inspection assembly is further adapted to assume an inspection condition in which the inspection assembly (20) is positioned in a second position, closer to the first housing end (31) as compared to the first position, and in which the seal (24) is open.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: December 11, 2018
    Assignee: Vision IO AS
    Inventors: Øyvind Hovland, André Hognestad
  • Patent number: 10018002
    Abstract: This system maintains bottom hole pressure and constant well bore pressure profile for a period of time in event of loss of power to rig pumps, rig pump failure or other loss of pressure to the primary flowline. The back pressure system diverts mud into the primary flowline to maintain pressure. The system provides time to get the diesel powered cement unit on line to maintain pressure or get the power reinstated to the rig pumps. The mud discharged into the primary flowline can be recovered back into the housing via the housing inlet line and the housing can be recharged via the N2 high pressure bottle rack. The back pressure system installs upstream of the MPD chokes with interfaces to the primary flow line to divert the drilling mud to the primary flowline.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: July 10, 2018
    Assignee: OPTIMAL PRESSURE CONTROL LLC
    Inventor: Martyn Parker
  • Patent number: 10000983
    Abstract: A jet pump assembly is adapted to be releasably attached to a tubular member of a tubular string in an oil well. The jet pump may be pumped out of the tubular string to the surface by a reverse flow of power fluid down the well between the tubular string and the casing of the well. Consequently the jet pump may be serviced or reconfigured to a direct pumping mode without the necessity of a wire line or other apparatus. A sensor for measuring downhole parameters such as temperature and pressure etc. is positioned within a cavity located in a lower portion of the jet pump so as to be removable from the well with the pump.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: June 19, 2018
    Assignee: Tech-Flo Consulting, LLC
    Inventors: William J. Jackson, Erik J. Reissig
  • Patent number: 9797248
    Abstract: A constant-resistance and large deformation anchor cable and a constant-resistance device are provided. The constant-resistance and large deformation anchor cable comprises cables (7), an anchoring device (13), a loading plate (12) and clipping sheets (4). The upper end of cables (7) is fixed on the anchoring device (13) and the loading plate (12) by clipping sheets (4). The constant-resistance and large deformation anchor cable also comprises a constant-resistance device, and the constant-resistance device comprises a sleeve (8) and a constant-resistance body (5). The sleeve (8) is a straight tube. The constant-resistance body is conical, and the diameter of the lower end of the constant-resistance body is bigger than the diameter of the upper end of the constant-resistance body. The inner diameter of the sleeve (8) is smaller than the diameter of the lower end of the constant-resistance body.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: October 24, 2017
    Assignee: China University of Mining & Technology (Beijing)
    Inventors: Manchao He, Zhigang Tao, Bin Zhang, Xiaojie Yang
  • Patent number: 9650857
    Abstract: In a fracking context the object that will ultimately block a passage in an isolation device is introduced into the zone with the bottom hole assembly. The object is not released until the guns fire to create a pressure spike in the borehole that triggers the object retaining device to release the object. The retaining device is placed in close proximity to the isolation device and its setting tool to allow a larger object and passage in the isolation device to be used. If the guns misfire, the object is not released and comes out with the guns. The replacement guns can be pumped in because the passage in the isolation device has stayed open during the misfire. Direct and indirect object release in response to pressure created from the firing of the guns is contemplated.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: May 16, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Jason C. Mailand, Daniel S. Matthews
  • Patent number: 9593560
    Abstract: In a fracking context the object that will ultimately block a passage in an isolation device is introduced into the zone with the bottom hole assembly. The object is not released until the guns fire to create a pressure spike in the borehole that triggers the object retaining device to release the object. The retaining device is placed in close proximity to the isolation device and its setting tool to allow a larger object and passage in the isolation device to be used. If the guns misfire, the object is not released and comes out with the guns. The replacement guns can be pumped in because the passage in the isolation device has stayed open during the misfire. Direct and indirect object release in response to pressure created from the firing of the guns is contemplated.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: March 14, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Jason C. Mailand, Daniel S. Matthews
  • Patent number: 9534464
    Abstract: A soil sampler assembly includes a utility vehicle and a soil sampler module coupled to the utility vehicle. The utility vehicle includes a cab, and the soil sampler module is configured to deposit a soil sample in the cab. For example, the soil sampler assembly includes a conveyor system configured to convey the soil sample to the cab. The conveyor system includes a central conveyor and a lateral conveyor that feeds the central conveyor. The central conveyor is on a travel track. The soil sampler assembly further includes a sampler arm assembly. The sampler arm assembly includes a power cylinder, a guide cylinder, a transfer block, and a probe. The probe has a tip, and the tip of the probe includes an outer surface defining an outer taper bore and an inner surface defining an inner taper bore.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: January 3, 2017
    Assignee: Soil Analytics, LLC
    Inventors: Jay T. Kelley, Matthew J. Rasmussen
  • Patent number: 9322265
    Abstract: Provided is a coring apparatus for collecting marine sediments, and more particularly, to a coring apparatus having a core filled with marine sediments when the coring apparatus is inserted into a seabed.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: April 26, 2016
    Assignee: Korea Institute of Geoscience and Mineral Resources
    Inventor: Gee Soo Kong
  • Patent number: 9316089
    Abstract: A downhole fracturing system including a seat assembly having a plurality of like-sized openings therein. Each of the like-sized openings has a cross sectional area complementary to a corresponding plurality of objects such that each of the objects is matable therewith to substantially inhibit fluid flow through each like-sized opening. The objects have dimensions insufficient to mate with an opening in a next adjacent upstream seat assembly. A method of hydraulic fracturing is also included.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: April 19, 2016
    Assignee: BAKER HUGHES INCORPORATED
    Inventor: Justin Kellner
  • Patent number: 9102861
    Abstract: When conducting cementing operations within confined locales, such as the annular space within a wellbore, it can sometimes be difficult to successfully deliver an uncured cement composition to a desired location. Cementing methods can comprise: providing a cement composition comprising a cement and a property control package, the property control package comprising: a filtration control agent; a friction reducer; and a setting accelerator; introducing the cement composition into a mineral exploration wellbore; and setting the cement composition in the wellbore.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: August 11, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Shantel Stone, Charles Landis, Ryan Collins
  • Publication number: 20150014061
    Abstract: A downhole tool assembly is configured for repeated and selective hydraulic actuation and deactuation. A piston assembly is configured to reciprocate axially in a downhole tool body. The piston assembly reciprocates between a first axial position and second and third axial positions that axially oppose the first position. The downhole tool is actuated when the piston assembly is in the third axial position and deactuated when the piston assembly is in either of the first or second axial positions. A spring member biases the piston assembly towards the first axial position while drilling fluid pressure in the tool body urges the piston assembly towards the second and third axial positions. Downhole tool actuation and deactuation may be controlled from the surface, for example, via cycling the drilling fluid flow rate.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 15, 2015
    Inventors: Jian Wu, Jianbing Hu, Dwayne P. Terracina, Tommy G. Ray
  • Publication number: 20140246190
    Abstract: A resettable downhole tool actuator comprises a housing, a collet slidable within the housing and defining a seating with which a ball is engageable, in use, the collet being mounted upon a moveable support including a piston and arranged such that, when the bail engages the seating, fluid flow through an axially extending passage provided in the support is restricted, the housing including an increased diameter region arranged such that, when the seating is aligned with the increased diameter region, outward deflection of the collet permits the ball to pass through the seating and through the axially extending passage.
    Type: Application
    Filed: October 9, 2012
    Publication date: September 4, 2014
    Applicant: NOV DOWNHOLE EURASIA LIMITED
    Inventor: Alan MacKenzie
  • Publication number: 20140231096
    Abstract: A method of operating a downhole tool in a no-flow configuration in which a piston and a flow-restriction cooperate to occlude a tool throughbore. The tool is reconfigured to an intermediate configuration by flowing fluid through the tool at an intermediate flow-rate lower than an operating flow-rate and axially translating the piston to an intermediate position in which the piston and flow-restriction cooperate to define an intermediate flow area. Axial translation of the piston between a no-flow position and the intermediate position includes an occlusional stage of a first axial extent during which the piston and the flow-restriction occlude the tool throughbore, and a transitional stage of a second axial extent during which the piston and the flow-restriction cooperate to provide a step-change in flow area. The tool is reconfigured to an operating configuration by flowing fluid through the tool at the operating flow-rate and axially translating the piston.
    Type: Application
    Filed: February 17, 2014
    Publication date: August 21, 2014
    Applicant: NOV Downhole Eurasia Limited
    Inventor: Alan Martyn Eddison
  • Patent number: 8794329
    Abstract: A well system can include an inflow control device which resists flow into a tubular string. A selection from among multiple different flow resistances through the inflow control device can be performed in response to pressure manipulation. An inflow control device can include a piston which is displaceable to at least two positions. Flow through the inflow control device is permitted at a certain flow resistance when the piston is at one position, and flow through the inflow control device is permitted at a greater flow resistance when the piston is at another position. Fluid which flows through the inflow control device can be constrained to flow through an increased number of flow restrictors in response to displacement of the piston from the first to the second position.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: August 5, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Luke W. Holderman
  • Publication number: 20130092375
    Abstract: Methods and apparatus for liner wiper plugs with bypass options to allow displacing fluid to be pumped through after the liner wiper plug is set in a liner hanger system landing collar. By pumping displacing fluids through the bypass, uncured cement may be removed from the shoe track area and an area external to the shoe track area.
    Type: Application
    Filed: August 28, 2012
    Publication date: April 18, 2013
    Inventor: George J. Melenyzer
  • Patent number: 8356669
    Abstract: A well system can include an inflow control device which resists flow into a tubular string. A selection from among multiple different flow resistances through the inflow control device can be performed in response to pressure manipulation. An inflow control device can include a piston which is displaceable to at least two positions. Flow through the inflow control device is permitted at a certain flow resistance when the piston is at one position, and flow through the inflow control device is permitted at a greater flow resistance when the piston is at another position. Fluid which flows through the inflow control device can be constrained to flow through an increased number of flow restrictors in response to displacement of the piston from the first to the second position.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: January 22, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Luke W. Holderman
  • Patent number: 7896067
    Abstract: A tool and its operating procedure are provided to protect any device while lowering into a well, and especially hydraulic devices such as sensors with expandable arms or inflatable elements such as packers. The protection is mainly important in the open hole of highly deviated or horizontal wells, for any device equipped with external seal element, delicate sensor or articulated parts. This tool features an automatic sequence controlled by a single dart or a single ball launched into the running string from the surface: when the dart or the ball lands on its seat, the pressure build-up is initially applied to a piston to extract the device from the protector without exposing it to any differential pressure, then it is automatically applied to the device itself for actuation as soon as the device is entirely pulled out of the protector.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: March 1, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Christophe Rayssiguier, Jean-Philippe Bedel
  • Patent number: 7861781
    Abstract: A wall casing cement plug assembly includes a receptacle with an axial passage. The receptacle is pumped to a lower end of the casing string and locked in place. The receptacle has a casing seal that engages the string of casing and a retainer mechanism on its exterior that engages a profile in the string of casing. Cement is pumped through the receptacle by rupturing a blocking device in the axial passage of the receptacle. A wiper plug is pumped down the string casing. The wiper plug has a prong on its lower end that stabs into the axial passage of the receptacle. A latch located in the lower portion of the receptacle locks the wiper plug to the body.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: January 4, 2011
    Assignee: Tesco Corporation
    Inventor: Shane P. D'Arcy
  • Publication number: 20100032170
    Abstract: A method is disclosed for running a completion string, such as casing, into a predrilled wellbore while allowing rotation of a downhole component with respect to the completion string. The downhole component may be a drill shoe or reamer shoe for example. There is also disclosed a drillable or millable drive assembly for driving the rotation of a portion of the casing assembly and other applications thereof.
    Type: Application
    Filed: October 4, 2007
    Publication date: February 11, 2010
    Applicant: CALEDUS LIMITED
    Inventors: Paul Howett, Mike Wardley
  • Patent number: 7640984
    Abstract: A cement float collar is disclosed that can be positioned downhole and used in a wellbore completion operation after drilling a wellbore with casing. A wellbore drilling and completion method is also disclosed. The cement float collar is made for pumping downhole and into engagement with a groove formed in the casing, called the profile nipple. As such, no restriction is needed in the casing for accepting or latching the float collar and the portion of casing including the groove can be installed at the start of the drilling operation. In addition, the profile nipple can be used to engage other drilling tools and, therefore, can already be in place when the final well depth (TD) is reached.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: January 5, 2010
    Assignee: Tesco Corporation
    Inventors: Jeffery Walter Vert, Per G. Angman
  • Patent number: 7484559
    Abstract: A cement float collar is disclosed that can be positioned downhole and used in a wellbore completion operation after drilling a well-bore with casing. A wellbore drilling and completion method is also disclosed. The cement float collar is made for pumping downhole and into engagement with a groove formed in the casing, called the profile nipple. As such, no restriction is needed in the casing for accepting or latching the float collar and the portion of casing including the groove can be installed at the start of the drilling operation. In addition, the profile nipple can be used to engage other drilling tools and, therefore, can already be in place when the final well depth (TD) is reached.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: February 3, 2009
    Assignee: Tesco Corporation
    Inventors: Jeffery Walter Vert, Per G. Angman
  • Patent number: 7472753
    Abstract: The present invention provides a cementing system and method for wellbores by cementing an annulus between a wellbore casing and a wellbore. In at least one embodiment, the invention includes a landing collar defining a restricted passage, a wellbore casing defining a passage coupled to the landing collar, a top cementing plug for sealingly engaging the wellbore casing, a bottom cementing plug for sealingly engaging the wellbore casing, and a fluid injection assembly coupled to the wellbore casing for injecting fluidic materials into the wellbore casing and controllably releasing the top cementing plug and the bottom cementing plug into the wellbore casing. The bottom cementing plug includes a plug body defining a plug passage, a frangible membrane for sealing the plug passage, and a one-way valve for controlling the flow of fluidic materials through the plug passage. The invention also includes the bottom cementing plug and methods for operation.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: January 6, 2009
    Assignee: BJ Services Company
    Inventors: Juan Carlos Mondelli, Carlos H. Aguilera
  • Publication number: 20080149336
    Abstract: Methods and devices useful in stage cementing operations are provided. One example of an apparatus may comprise a catcher tube assembly and a deformable device. One example of a method is a method of stage cementing a casing string comprising: positioning a catcher tube on top of a float collar; pumping a first fluid through the casing string; placing a first deformable device in the casing string; and pumping a second fluid through the casing string, thereby causing the first deformable device to translate downward in the casing string and into the catcher tube.
    Type: Application
    Filed: December 22, 2006
    Publication date: June 26, 2008
    Inventors: David Szarka, Henry E. Rogers
  • Patent number: 7275595
    Abstract: The present invention provides for an apparatus and method to displace fluids and to prevent the mixing or bypassing of fluids used in gravel pack operations. A moveable plug is used to create a physical partition between fluids.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: October 2, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: Samuel Tocalino, Mehmet Parlar, Gerard Daccord, Jean Desroches
  • Patent number: 7128154
    Abstract: The present invention generally relates to apparatus and methods for completing a well. Particularly, the present invention relates to a single-direction plug for use with cementing applications and with drilling with casing applications. One embodiment comprises a cement plug for installation in a wellbore casing. The plug includes a body and gripping members for preventing movement of the body in a first axial direction relative to the casing. The plug further comprises a sealing member for sealing a fluid path between the body and the casing. The plug is movable in a second axial direction with fluid pressure but is not movable in the first direction due to fluid pressure.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: October 31, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Richard L. Giroux, David J. Brunnert, Gregory Guy Galloway, John C. Jordan
  • Patent number: 7044226
    Abstract: A method and a device for removing a hydrate plug (38) from a pipeline (16), wherein a pig (1), which is connected to an umbilical (2) extending to surface, is displaced down into the pipeline (16) until proximity of the hydrate plug (38), after which a fluid arranged with hydrate-plug-dissolving properties is pumped through the umbilical (2).
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: May 16, 2006
    Assignee: AGR Subsea AS
    Inventor: Roger Stave
  • Patent number: 7032668
    Abstract: The present invention provides a cementing system and method for wellbores by cementing an annulus between a wellbore casing and a wellbore. In at least one embodiment, the invention includes a landing collar defining a restricted passage, a wellbore casing defining a passage coupled to the landing collar, a top cementing plug for sealingly engaging the wellbore casing, a bottom cementing plug for sealingly engaging the wellbore casing, and a fluid injection assembly coupled to the wellbore casing for injecting fluidic materials into the wellbore casing and controllably releasing the top cementing plug and the bottom cementing plug into the wellbore casing. The bottom cementing plug includes a plug body defining a plug passage, a frangible membrane for sealing the plug passage, and a one-way valve for controlling the flow of fluidic materials through the plug passage. The invention also includes the bottom cementing plug and methods for operation.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: April 25, 2006
    Assignee: BJ Services Company
    Inventors: Juan-Carlos Mondelli, Carlos H. Aguilera
  • Patent number: 6997253
    Abstract: An apparatus for preventing or limiting the rotation of cementing plugs in a casing string during drillout. The apparatus includes an outer housing with a sleeve disposed therein. The sleeve has an inner surface configured to engage cementing plugs received therein to cause an interference fit. The sleeve will hold the cementing plugs when rotational forces, such as drilling forces, are applied so that during drillout, rotation of the cementing plug is prevented or is at least limited.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: February 14, 2006
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Earl D. Webb, Michael D. Stevens, John C. Zimmerman
  • Patent number: 6920933
    Abstract: A platform is used to deliver a tool down a hole by controlling the flow of fluid through and around the platform. The platform has a top surface for receiving the tool. The platform also has a bottom surface to provide guidance through and resistance to the flow of fluid. The lower surface of the platform can be engineered to steer the platform against an inner wall of the casing. This slows the descent by adding mechanical friction to its descent. The lower surface can also be engineered to add a predetermined amount of resistance to the flow of the well fluid across it. A stop on the casing already in place in the well stops the descent of the tool at a desired depth. Once the tool is no longer needed, a fishing tool can be lowered from the same crane to retrieve the tool and platform. Use of a crane substantially decreases the cost of the operation compared to the need for a rig.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: July 26, 2005
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Roger C. Watson, Flint R. George
  • Patent number: 6896051
    Abstract: An apparatus for preventing or limiting the rotation of cementing plugs in a casing string during drillout. The apparatus includes an outer housing with a sleeve disposed therein. The sleeve has an inner surface configured to engage cementing plugs received therein to cause an interference fit. The sleeve will hold the cementing plugs when rotational forces, such as drilling forces, are applied so that during drillout, rotation of the cementing plug is prevented or is at least limited.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: May 24, 2005
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Earl D. Webb, Michael D. Stevens, Steven L. Holden
  • Publication number: 20040206500
    Abstract: The present invention provides a cementing system and method for wellbores by cementing an annulus between a wellbore casing and a wellbore. In at least one embodiment, the invention includes a landing collar defining a restrictef passage, a wellbore casing defining a passage coupled to the landing collar, a top cementing plug for sealingly engaging the wellbore casing, a bottom cementing plug for sealingly engaging the wellbore casing, and a fluid injection assembly coupled to the wellbore casing for injecting fluidic materials into the wellbore casing and controllably releasing the top cementing plug includes a plug body defining a plug passage. a frangible membrane for sealing the plug passage, and a one-way valve for controlling the flow of fluidic materials through the plug passage. The invention also includes the bottom cementing plug and methods for operation.
    Type: Application
    Filed: May 17, 2004
    Publication date: October 21, 2004
    Inventors: Juan-Carlos Mondelli, Carlos H. Aguilera
  • Publication number: 20040129417
    Abstract: A telescoping rig with an upper mast telescopingly received within a lower mast. A torque carrier is formed of an upper part suspended within the upper mast and a lower part attached to the lower mast. The lower part may be secured to the upper part when the rig is in operational position, and is movable to allow the upper mast to move into a telescoped position within the lower mast. The rig is readied for transport by disconnecting upper and lower parts of a torque carrier, moving the lower torque carrier laterally within the lower mast to allow the upper mast to telescope within the lower mast; and telescoping the upper mast within the lower mast.
    Type: Application
    Filed: January 3, 2003
    Publication date: July 8, 2004
    Inventors: Allan R. Nelson, Mark E. Mattock
  • Patent number: 6719060
    Abstract: A plunger lift for a hydrocarbon well includes a multipart piston that is dropped into the well in separate pieces. When the pieces reach the bottom of the well, they fall into an accumulation of the formation liquid in the bottom of the well and unite. Gas from the formation pushes the unit upwardly, pushing liquid above the piston toward the surface. The multipart piston includes a upper sleeve and a lower component. A decoupler at the surface comprises a separator rod which the sleeve passes onto thereby dislodging the lower component and allowing it to fall into the well. The sleeve is held on the separator rod by the action of well contents flowing around and/or through the sleeve. When well flow around the sleeve is interrupted, the sleeve falls into the well. The length of time the sleeve is held at the surface is varied in response to the amount of liquid produced on each cycle.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: April 13, 2004
    Inventor: Edward A. Wells
  • Patent number: 6712152
    Abstract: The plug holder sub 110 for being supported on a conveyance tubular temporarily supports a liner wiper plug 150, so that a pump down plug may land in the liner wiper plug and be supported from a generally tubular body 116 of the plug holder sub. The retaining member 114 is provided for attaching the liner wiper plug to the tubular body, and a piston 134 moves within the tubular body from a retaining position to a release position. A metering jet 130, 131 on a fluid flow path 128 from chamber 132 restrains the piston movement, thereby preventing release of the liner wiper plug until the piston moves to the release position.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: March 30, 2004
    Assignee: Dril-Quip, Inc.
    Inventors: John M. Yokley, Larry E. Reimert
  • Publication number: 20030116320
    Abstract: An apparatus and method for cementing a casing string in a wellbore. A self-filling tubular cementing collar connected to the lower end of a casing string is provided with one-way flow valving that allows well fluid to enter and self-fill the casing string as it is lowered into the wellbore and automatically prohibits reverse fluid flow from the collar when washing or cementing during forward circulation through the collar. The one-way valving is carried by an axially movable support that can be shifted by a cementing plug moved by pump pressure to permanently seal the entry flow passage after the casing sting is properly positioned in the wellbore.
    Type: Application
    Filed: December 20, 2001
    Publication date: June 26, 2003
    Inventors: David D. Szarka, Henry E. Rogers
  • Publication number: 20030024701
    Abstract: A cementing manifold is disclosed that preferably includes: modular housings that can be stacked together and interconnected to add multi-dart or multi-sphere capability; identical, interchangeable valves; internal bypass capability; a minimum number of protrusions into the pressure containing components; and no externally mounted welded or threaded components.
    Type: Application
    Filed: July 31, 2002
    Publication date: February 6, 2003
    Applicant: SMITH INTERNATIONAL, INC.
    Inventor: James A. Simson
  • Patent number: 6513590
    Abstract: The present invention relates to a wiper plug and internal drop ball mechanism that may be used in conjunction with a downhole surge reduction tool to run, hang, and cement casing liners in a wellbore. The apparatus of the present invention comprises a wiper plug assembly removably attached to the drill string within the casing liner, a drop ball sub attached below the wiper plug assembly which releases a float valve actuator ball having a diameter larger than the drill string, and float equipment having a plurality of flapper valves. The apparatus of the present invention may further comprise a diverter tool connected between the drill string and the casing liner.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: February 4, 2003
    Inventors: Jerry P. Allamon, Kenneth David Waggener, Jack E. Miller
  • Publication number: 20020144814
    Abstract: The present invention relates to a wiper plug and internal drop ball mechanism that may be used in conjunction with a downhole surge reduction tool to run, hang, and cement casing liners in a wellbore. The apparatus of the present invention comprises a wiper plug assembly removably attached to the drill string within the casing liner, a drop ball sub attached below the wiper plug assembly which releases a float valve actuator ball having a diameter larger than the drill string, and float equipment having a plurality of flapper valves. The apparatus of the present invention may further comprise a diverter tool connected between the drill string and the casing liner.
    Type: Application
    Filed: May 7, 2001
    Publication date: October 10, 2002
    Inventors: Jerry P. Allamon, Kenneth David Waggener, Jack E. Miller
  • Publication number: 20020144813
    Abstract: The present invention relates to a wiper plug and internal drop ball mechanism that may be used in conjunction with a downhole surge reduction tool to run, hang, and cement casing liners in a wellbore. The apparatus of the present invention comprises a wiper plug assembly removably attached to the drill string within the casing liner, a drop ball sub attached below the wiper plug assembly which releases a float valve actuator ball having a diameter larger than the drill string, and float equipment having a plurality of flapper valves. The apparatus of the present invention may further comprise a diverter tool connected between the drill string and the casing liner.
    Type: Application
    Filed: April 9, 2001
    Publication date: October 10, 2002
    Inventors: Jerry P. Allamon, Kenneth David Waggener
  • Patent number: 6439321
    Abstract: An actuator for an orienting device for orienting a borehole apparatus in a borehole and an orienting device comprised of the actuator, wherein the orienting device is comprised of an orienting mechanism which is actuated by longitudinal movement. The actuator is comprised of a housing having a first end and a second end and a fluid passageway extending through the housing from the first end to the second end. Further, a longitudinally reciprocable piston, positioned within and providing a first partial obstruction of the fluid passageway, engages with the orienting mechanism such that longitudinal movement of the piston actuates the orienting mechanism.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: August 27, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ian Gillis, Daniel P. Lupien
  • Publication number: 20020000318
    Abstract: Method and apparatus are disclosed for use in cementing a tubular member which is run into a borehole using a drill string. A landing collar is attached to the tubular member near the bottom of the tubular member, and the landing collar has an opening at least five inches in diameter. A liner wiper assembly is releasably suspended from the drill string. The liner wiper assembly comprises a lower liner wiper plug comprising float valves and an upper liner wiper plug. With the method and apparatus of the present invention, plugging problems are minimized.
    Type: Application
    Filed: August 20, 2001
    Publication date: January 3, 2002
    Inventors: Jerry P. Allamon, Jack E. Miller
  • Patent number: 6311771
    Abstract: An apparatus for launching at least two plugs, said apparatus comprising a mandrel (2), a lower plug (22) and an upper plug (21) releasably disposed with respect to said mandrel (2), wherein said upper plug (21) comprises a body (23) having a flow path (24) therethrough and a cap (25) for blocking fluid flow through said flow path (24) characterized in that said cap (25) is detachable from said body (23) in use if the upper plug (21) is prematurely ejected.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: November 6, 2001
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Tarald Gudmestad, Frederick Thomas Tilton
  • Patent number: 6273190
    Abstract: A plug for a wellbore including a plug element adapted to traverse the wellbore and a reservoir coupled to the plug element. The reservoir is hydraulically coupled to an annular space between a wall of the wellbore and an exterior surface of the plug element. The reservoir carries a filler material within. Extrusion of the filler material from the reservoir causes the filler material to fill the annular space so as to bind the plug element within the wall of the wellbore. One embodiment of the plug an anti-rotation element coupled to the plug element. The plug element can be coupled to drill pipe by opposite-hand thread whereby engagement of the anti-rotation element enables decoupling of the plug from the drill pipe by normal-direction rotation of the drill pipe.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: August 14, 2001
    Inventor: Donald M. Sawyer
  • Patent number: 6056053
    Abstract: A new wellbore cementing system has been developed which includes, in certain embodiments, a plug container with a flow diverter for diverting a portion of flowing fluid away from plugs in the plug container; a plug set system with internal sleeves or dart receivers with shearable parts for shearing to selectively release plugs--all in certain embodiments made of non-metal material and/or plastic; a swivel equalizer with internal valving to isolate a plug set (or any other item) from torque and to relieve pressure below the swivel equalizer; and unique burst tube systems for selectively controlling fluid flow and plug system operation. In one aspect a plug nose is tapered to correspond to a taper of a landing ring so that wedge-locking of the nose and ring effects desired non-rotation of the plug during drilling. In one aspect plug fin bending is facilitated by reducing plug body thickness so that an alternate fluid flow path is provided for cementing.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: May 2, 2000
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Richard L. Giroux, Peter Budde
  • Patent number: 5950724
    Abstract: A subsea lifting top drive cement head in which cement flows from the top. The cement head includes lower and upper assemblies with a bore for fluid flow, and a body in sure lock connection with the lower and upper assemblies and having a dart cage to prevent a dart inside the dart cage from being washed away by the cement flow. In addition, the cement head includes a ball dropper that does not need to be retracted prior to releasing the dart.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: September 14, 1999
    Inventor: James F. Giebeler
  • Patent number: 5909771
    Abstract: A new fill valve for use in cementing operations in a wellbore extending down into the earth has been invented, the fill valve having a tubular housing having a valve seat, a valve member slidably mounted in said tubular housing, a spring for biasing said valve member towards a closed position, the valve member having a head engageable with the valve seat of the tubular housing to close the valve, selectively releasable apparatus for releasably maintaining the fill valve in an open position, the selectively releasable apparatus including a shear ring breakable in response to pressure thereon, a slider movably disposed in a slider housing mounted in the tubular housing, a lower end of the slider initially projecting down and out from the slider housing and abutting a top end of the valve member and preventing the valve member from moving, a top end of the slider abutting the shear ring, the slider prevented initially from moving by the shear ring, the slider movable in response to pressure of fluid in the well
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: June 8, 1999
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Richard L. Giroux, Peter Budde
  • Patent number: 5884700
    Abstract: A method and apparatus for treating the production tubing string of a flowing gas well is disclosed. The method includes introducing treatment fluid into the wellhead end of the production tubing string, allowing an applicator fall through the production tubing string thus applying a first coating of treatment fluid and retracting the applicator thus applying a second coating of the treatment fluid.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: March 23, 1999
    Assignee: Texaco Inc
    Inventors: Thomas H. Cook, Donald A. Branton, Ray D. Hudgins