With Undisturbed Core Receiver Patents (Class 175/239)
  • Patent number: 9765585
    Abstract: Methods of procuring a core sample may involve engaging an earth formation with a cutting structure of a coring bit. A core sample may be received within a receptacle connected to the coring bit, the receptacle being lined with a sponge material. A space of about 1 mm or less may be maintained between the core sample and the sponge material. Coring tools may include a coring bit comprising an inner gage and an outer gage and a sponge material positioned to at least partially surround a core sample cut by the coring bit. A radial distance between an inner surface of the sponge material and the inner gage of the coring bit may be about 1 mm or less. A distance between a center of curvature of the inner gage and a center of curvature of the outer gage may be about 0.3 mm or less.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: September 19, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Christoph Wesemeier, Thomas Uhlenberg
  • Patent number: 9580982
    Abstract: An inner barrel assembly for use with a coring tool may include a sleeve located coaxially within an inner barrel in a telescoping manner. The core barrel assembly may also include a cap located above a top end of the sleeve when the inner barrel assembly is in an initial coring position. The cap may include a skirt having a portion extending downwardly from the cap. A coring tool including an inner barrel assembly and methods of forming an inner barrel assembly are also disclosed.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: February 28, 2017
    Assignee: Baker Hughes Incorporated
    Inventor: Audun Kvinnesland
  • Patent number: 9494004
    Abstract: A coring extender for a coring tool is provided. The coring tool is deployable by a downhole tool into a wellbore. The coring extender includes a housing operatively connectable to the downhole tool, a mandrel, and seals. The housing has fluid chambers therein. The mandrel is positionable in the housing, and includes a locking tube operatively connectable to the housing and a coupling tube operatively connectable to the coring tool. The coupling tube is adjustably positionable relative to the locking tube such that a length of the mandrel is adjustably defined therebetween. The coupling tube has an outer surface slidably positionable along an inner surface of the housing. Seals are positionable between the mandrel and the housing to define a fluid pocket to isolate the fluid therebetween as the coupling tube moves along the housing whereby the fluid permitted to flow about the fluid pocket to balance between the fluid chambers.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: November 15, 2016
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: Khoi Trinh, Folarin Ozah, Rick N. Mecham
  • Patent number: 9279320
    Abstract: A housing (15) for connection to a downhole assembly (17), the housing comprising first and second sections (31, 32), the first section (31) being adapted for connection to a portion of the downhole assembly, the second section (32) defining a compartment (23) to receive a downhole tool (11) or component thereof, the second section (32) being configured to provide a path (40) for fluid flow past the compartment (23) as the assembly descends within the borehole, and the first section (31) being configured for fluid communication between a passage in said portion of the downhole assembly and the fluid flow path (40).
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: March 8, 2016
    Assignee: Reflex Technology International Pty Ltd.
    Inventors: Peter Jacobs, Kelvin Brown
  • Publication number: 20140305712
    Abstract: A pressure coring apparatus comprises a housing having an upper end and a lower end. A valve is coupled to the lower end of the housing and has an open position for entrance of a core and a closed position for retaining and sealing the core within the housing. A piston assembly is moveably disposed within the housing. A first volume is defined within the housing and between the upper end of the housing and the piston assembly. A second volume is defined within the housing between the lower end of the housing and the piston assembly. A pressure relief device is disposed through the housing and operable to maintain pressure within the first volume and the second volume below a target pressure.
    Type: Application
    Filed: April 15, 2014
    Publication date: October 16, 2014
    Applicant: National Oilwell Varco, L.P.
    Inventors: Bobby Talma WILSON, David Young MCGEHEE
  • Patent number: 8752650
    Abstract: Drill stern test apparatus includes a drill string, wireline coring system and a downhole tool that is seated in the core barrel of the coring system. A valve packer within the downhole tool is inflated to seal the core barrel and allow a valve to be operated by movement of the drill string. One or more packers can be inflated to isolate the test zone in the borehole below the coring system. The apparatus is operated to allow the test zone fluid to flow upwardly in the downhole tool and be measured. Downhole tool transducers accumulate the data and transmit the same to the surface. The wireline can be pulled to relieve packer inflation pressure, release a latch and allow the downhole tool to be pulled to the surface while leaving the coring system in place.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: June 17, 2014
    Inventor: Ian Gray
  • Patent number: 8684110
    Abstract: A sidewall coring apparatus for obtaining a plurality of formation cores from a sidewall of a wellbore includes a core catching tube configured to be sealed downhole and to store the plurality of formation cores therein. The core catching tubes includes an inner sleeve and an outer sleeve concentric with the inner sleeve. The inner and outer sleeves include corresponding slots configured to align in response to relative movement of the inner and outer sleeves, and when aligned the slots of the inner and outer sleeves allow evacuation of fluid from the core catching tube as each of the plurality of formation cores is inserted into the core catching tube.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: April 1, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Lennox E. Reid, Jr., Carsten Sonne
  • Patent number: 8657037
    Abstract: A core retaining device is provided for use with a core drill bit, which is adapted to cut a core from a material such as concrete. The core retaining device includes a core attachment mechanism for releasably connecting the core retaining device to the core. A bearing is connected to the core attachment mechanism and allows the drill bit to rotate while the core attachment mechanism remains statically connected to the core. A biasing arrangement operably connects between the drill bit and the core via the bearing, and axially biases the core away from the material preventing the core from slipping from the drill bit. The core retaining device further includes at least one auxiliary safety feature such as extensions which extend laterally outward from the drill bit.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: February 25, 2014
    Inventor: Vidik Noiman
  • Patent number: 8647030
    Abstract: A core drilling system is disclosed herein in which a torque tube has a groove or keyway which receives a rotating wheel or key to prevent a transmission box and motor from rotating during drilling operation. As such, the operator does not need to hold a stabilizing arm to resist counter rotational forces during the drilling process. The operator may focus on the hole to be cut in a substrate. Additionally, a torque tube stabilizing leg assembly may be secured to the free distal end portion of the torque tube.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: February 11, 2014
    Inventors: C. Warren Duncan, Anders Johnsen
  • Patent number: 8613330
    Abstract: An example coring tool includes a cylindrical body having a leading edge to contact a substance and a cavity defined at least in part by an inner surface of the cylindrical body. The inner surface is to engage and retain a sample from the substance with a plurality of raised features. The raised features are shaped so that at least one of the raised features or an exterior surface of a sample in the cavity deforms to increase a force required to remove the sample from the cavity.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: December 24, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Barry Moon, Vincent Jeffrey Pisio, Steven E. Buchanan
  • Patent number: 8453766
    Abstract: An apparatus for transporting core samples includes an outer tube having an open end and a cover removably mounted to the open end; a core tube slidable into and out of the outer tube when the cover is removed from the outer tube; and a supporting structure between the core tube and the outer tube. The supporting structure supports the core tube within the outer tube with the core tube spaced from contact with an inner wall of the outer tube.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: June 4, 2013
    Assignee: Intevep, S.A.
    Inventors: Leonardo Graterol, Juan Ramos, Ricardo Rojas, Richard Rengifo, George Quercia
  • Patent number: 8430186
    Abstract: An apparatus comprising a sidewall coring tool configured to obtain a plurality of sidewall formation cores from a sidewall of a wellbore extending into a subterranean formation, wherein the sidewall coring tool comprises a core catching tube configured to store the plurality of sidewall formation cores therein, wherein the core catching tube comprises a fluid port configured to allow evacuation of fluid from the core catching tube as each of the plurality of sidewall formation cores is introduced therein, and wherein the core catching tube, including the fluid port, is configured to be sealed downhole without removing the sidewall coring tool from the wellbore.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: April 30, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Lennox E. Reid, Jr., Carsten Sonne
  • Publication number: 20120145461
    Abstract: A coring apparatus including an outer core barrel associated with a drill bit; an inner core barrel adapted to accept a core sample; and at least one strain sensor adapted to measure strain experienced by the inner core barrel selected from the group consisting of tension and compression, wherein an output of the at least one strain sensor is indicative of entry of the core sample into the inner core barrel.
    Type: Application
    Filed: February 22, 2012
    Publication date: June 14, 2012
    Applicant: Corpro Systems Limited
    Inventor: Phillipe Cravatte
  • Publication number: 20110083905
    Abstract: A coring apparatus includes an outer core barrel associated with a drill bit and an inner core barrel adapted to accept a core sample. The inner core barrel is rotatable with respect to the outer core barrel via a rotatable bearing. The coring apparatus may include a rotation sensor located within the inner core barrel. The rotation sensor measures relative rotation between the inner core barrel and the outer core barrel. Alternatively the coring apparatus may include one or more strain sensors adapted to measure tension and/or compression experienced by the inner core barrel or a vibration sensor mounted on the inner core barrel. The vibration sensor measures vibration experienced by the inner barrel.
    Type: Application
    Filed: December 21, 2010
    Publication date: April 14, 2011
    Applicant: CORPRO SYSTEMS LIMITED
    Inventor: Phillipe Cravatte
  • Publication number: 20100282515
    Abstract: An apparatus comprising a sidewall coring tool configured to obtain a plurality of sidewall formation cores from a sidewall of a wellbore extending into a subterranean formation, wherein the sidewall coring tool comprises a core catching tube configured to store the plurality of sidewall formation cores therein, wherein the core catching tube comprises a fluid port configured to allow evacuation of fluid from the core catching tube as each of the plurality of sidewall formation cores is introduced therein, and wherein the core catching tube, including the fluid port, is configured to be sealed downhole without removing the sidewall coring tool from the wellbore.
    Type: Application
    Filed: May 4, 2010
    Publication date: November 11, 2010
    Inventors: Lennox E. Reid, JR., Carsten Sonne
  • Publication number: 20100133014
    Abstract: The present invention relates to a core catcher and a corer having the same, and more particularly, to a core catcher provided with dual blade radial pins for preventing loss of sediments and a corer having the same.
    Type: Application
    Filed: May 26, 2008
    Publication date: June 3, 2010
    Applicant: Korea Institute of Geoscience and Mineral Resource (KIGAM)
    Inventors: Jae Hwa Jhin, Jun Ho Kim, Min Jun Kim
  • Patent number: 5209310
    Abstract: A system is described which enables the safe release of formation gases when corebarrel is being raised. A corebarrel has an elongate cylindrical outer casing (1) and an elongate cylindrical liner (2), the liner (2) being disposed within the outer casing (1) such that there is a space (3) between the liner and the outer casing. The liner (2) has a plurality of unidirectional valves (4) which enable the passage of gas from the volume (5) within the liner (2) to the space (3) between the liner and outer casing, and prevent the passage of fluids from the space (3) to the volume (5).
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: May 11, 1993
    Assignee: Diamant Boart Stratabit Limited
    Inventor: Graham Clydesdale
  • Patent number: 4580643
    Abstract: The longitudinal position of an inner barrel within a core barrel assembly can be adjusted and locked in the field without necessitating the disassembly of the cartridge cap assembly within the core barrel tool, and therefore without entailing loss of expensive rig time. The inner tube is coupled through a swivel assembly to a cartridge cap. The cartridge cap is threadedly coupled to the coring tool, and in particular to the outer tube. Thus, the cartridge cap is arranged and configured to be rotated, and thus longitudinally adjusted with respect to the outer tube. An upper portion of the cartridge cap is provided with a plurality of radially expanding fingers. A jam nut is disposed within a cylindrical array formed by the fingers, and is threadably engaged with the inside surface of the fingers.
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: April 8, 1986
    Assignee: Norton Christensen, Inc.
    Inventors: Douglas G. Fox, Larry C. Greenhalgh
  • Patent number: 4356872
    Abstract: A core barrel flushing device and method is disclosed particularly for flushing drilling fluid, mud and other undesirable material from a pressure core barrel downhole at existing conditions and pressure.The flushing device (F) comprises an outer barrel attachable to the drill string and core barrel (10), and an inner barrel (90) within the outer barrel (70). A sealed chamber (C) within the outer barrel (70) contains a piston (114) and flushing medium (M) displacable from the chamber (C) and into the core barrel during forceful displacement of the piston following actuation of the flushing device.Actuation of the flushing device is initiated by means (B) passed down the drill string into engagement with actuating means (94) allowing displacement of the piston and flushing medium from the chamber into the core barrel.Tripping means (112) are also disclosed responsive to the final movement of the piston to actuate, and seal the flushed pressure core barrel (10) and core sample (51) therein downhole.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: November 2, 1982
    Assignee: Christensen, Inc.
    Inventor: Craig R. Hyland
  • Patent number: 4248313
    Abstract: In a hollow stem auger for earth boring of the kind having spring loaded valve members at the bottom of the stem to permit the passage of test implements such as corers and vane test implements, the auger bit is constructed with a cage formation enclosing the valve member and supporting a bottom ring carrying cutting teeth. Interference of the valve members with a test implement is prevented by using an uncoupleable cylindrical sleeve surrounding the implement which sleeve can be lodged between the valve members to hold them open during use of the implement.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: February 3, 1981
    Inventor: Aaron Bonca
  • Patent number: 4230192
    Abstract: Coring apparatus for obtaining core samples which may comprise: an outer barrel assembly, the lower end of which is adapted for connection to a core bit, the upper end of which is adapted for connection to a drill string; an inner barrel assembly concentrically disposed within the outer barrel assembly and having first and second axially spaced and fluid communicating chambers therein; and valve means carried by the inner barrel assembly and movable from an open position, in which a core sample may be received by the first chamber, to a closed position, sealingly enclosing the core sample within the first chamber.
    Type: Grant
    Filed: August 8, 1978
    Date of Patent: October 28, 1980
    Inventor: Fritz T. Pfannkuche