Means Comprises Dropped Element Patents (Class 175/237)
  • Patent number: 9624754
    Abstract: A method for servicing a subterranean formation comprising providing a wellbore penetrating the subterranean formation, and placing a wellbore servicing tool in the wellbore, wherein the wellbore servicing tool comprises a baffle, wherein the baffle comprises a seat contoured to match a spherical zone of an obturator.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: April 18, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Matt James Merron, Zachary William Walton
  • Patent number: 9297234
    Abstract: A method and apparatus for wellbore control include a downhole facing ball stop and sealing area that can stop and seal with an actuator ball migrating toward surface with wellbore returns or production. The downhole facing ball stop operates with the returning actuator ball to create a seal against any returns or production migrating toward surface such that well control is provided until the ball is removed from the sealing area or a bypass is opened around the seal.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: March 29, 2016
    Assignee: PACKERS PLUS ENERGY SERVICES INC.
    Inventors: Daniel Jon Themig, Michael Kenyon
  • Publication number: 20140291031
    Abstract: A drillstring valve has an inlet mountable to a drillstring, an outlet and a passageway extending between the inlet and the outlet in a predetermined operating condition. In accordance with an embodiment, the drillstring valve comprises a stop element adapted for receiving a valve element wherein the stop element comprises at least one protrusion extending into a passageway portion of the passageway to thereby retain the valve element. According to an embodiment, the at least one protrusion is spaced from an inlet edge having a continuously reduced diameter in downstream direction. According to a further embodiment, the stop element comprises two or more protrusions which are spaced in circumferential direction of the passageway portion into which the at least two protrusions extend.
    Type: Application
    Filed: December 17, 2012
    Publication date: October 2, 2014
    Applicant: SCHOELLER-BLECKMANN OILFIELD EQUIPMENT AG
    Inventor: Paul Bernard Lee
  • Patent number: 8297365
    Abstract: A back-off sub apparatus is disclosed. The apparatus includes a connection connecting a rotational section and a non-rotational section. The rotational section is designed to be rotated via a ball dropped into the well under sufficient pressure to cause the rotational section to rotate relative to the non-rotational section supplying a controlled and sufficient torque to the connection to break the connection. The connection then is unthreaded by normal surface action. The disconnected or upper section of the apparatus and the drill string section associated with it can be withdrawn from the well leaving the lower portion and the drill string section associated with it in the well.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: October 30, 2012
    Assignee: Vortexx Research, Ltd
    Inventor: Norval Roland Dove
  • Patent number: 7665545
    Abstract: A method and apparatus for temporarily increasing fluid pressure at a specific location in a work string to perform an operation in an oil or gas well bore. Apparatus is provided which, in a first position provides fluid flow through the work string; in a second position provides the desired increase in fluid pressure to perform the operation in the well bore by dropping a ball (62) into the apparatus; and, by shearing pins (52) to move a sleeve (50) within the apparatus, provides a third position which returns fluid flow through the work string via bypass channels (26) created in the apparatus around the ball. Operation of a pressure activated near bit reamer in conjunction with the apparatus is also described.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: February 23, 2010
    Assignee: Specialised Petroleum Services Group Limited
    Inventor: George Telfer
  • Publication number: 20090283322
    Abstract: A back-off sub apparatus is disclosed. The apparatus includes a connection connecting a rotational section and a non-rotational section. The rotational section is designed to be rotated via a ball dropped into the well under sufficient pressure to cause the rotational section to rotate relative to the non-rotational section supplying a controlled and sufficient torque to the connection to break the connection. The connection then is unthreaded by normal surface action. The disconnected or upper section of the apparatus and the drill string section associated with it can be withdrawn from the well leaving the lower portion and the drill string section associated with it in the well.
    Type: Application
    Filed: June 26, 2007
    Publication date: November 19, 2009
    Inventor: Norval R. Dove
  • Patent number: 7347289
    Abstract: A by-pass tool is provided which has a large bore throughflow passage when in an inactive drilling mode, and which is capable of being activated upon launching of an activation dart from the surface, to an active mode in which drillstring fluids can be diverted to a by-pass port. The by-pass tool includes a casing, a by-pass port for diverting drillstring fluids when the tool is in the active mode, and an axially slidable member placed within the casing to slide between blocking and release positions with respect to the by-pass port. The slidable member may be moved to the release position by the dart to bring ports in the slidable member into registry with the by-pass port. This slidable member may also return to its blocking position and thereby cause the tool to revert to its inactive mode upon wireline retrieval of the dart.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: March 25, 2008
    Inventor: Paul Bernard Lee
  • Patent number: 6820697
    Abstract: A fluid flow actuated downhole tool is configurable in at least a first tool configuration and a second tool configuration. The tool comprises a tubular housing and an activating sleeve, the housing being adapted to catch the sleeve when the sleeve is dropped from surface and the engagement of the sleeve with the housing permitting actuation.of the tool between the first and second tool configurations. A flow restriction is provided for permitting fluid flow actuation of the tool when the activating sleeve has been caught in the body.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: November 23, 2004
    Inventor: Andrew Philip Churchill
  • Patent number: 6540033
    Abstract: An improved drill bit is provided with a sensor for monitoring an operating condition during drilling. A fastener system is provided for securing an erodible ball in a fixed position relative to a flow pathway until a predetermined operating condition is detected by the sensor, and for releasing the erodible ball into the flow pathway to obstruct the flow through at least one bit nozzle.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: April 1, 2003
    Assignee: Baker Hughes Incorporated
    Inventors: Eric Charles Sullivan, Theodore Edward Zaleski, Jr., Scott Ray Schmidt, Don Quy Nguyen, Glenn R. Zadrapa, Chih Lin
  • Patent number: 6315053
    Abstract: A hydraulic technique for applications with inflatable packers keeps the inflatable packer in a stretched-out condition despite the forces imposed on the packer by circulating fluids. This prevents the inflatable packer from swabbing due to the force of circulating fluids.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: November 13, 2001
    Assignee: Baker Hughes Incorporated
    Inventor: Martin P. Coronado
  • Patent number: 6253861
    Abstract: A tool or sub for use in a well bore is adapted to manipulate the circulation path of fluid through a drill string or work string in which the tool is connected. The apparatus has a body member defining an axial flow path with one or more radial outlets that may be opened or closed by respective valve members in use.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: July 3, 2001
    Assignee: Specialised Petroleum Services Limited
    Inventors: Mark Carmichael, Paul Howlett
  • Patent number: 4877095
    Abstract: Stopper, for cable passages or conduits, having a first chamber placed in said passage, said chamber comprising at least one bearing surface placed in this passage and adapted to cooperate with a closure element, a second chamber opening into the first chamber, said closure element being housed in said second chamber in a first position of the stopper, and means for moving the closure element in the first chamber to a second position of the stopper, where the cable is withdrawn from the passage, further comprising a separating member, situated between said first chamber and said second chamber, this member being adapted for controlling the movement of the closure element from the second chamber to the first chamber.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: October 31, 1989
    Assignee: Institut Francais du Petrole
    Inventor: Christian Wittrisch
  • Patent number: 4645006
    Abstract: An annulus access valve system having a plurality of valves installed in, and forming a part of, a drill string in a well bore whereby fluid may be pumped into the annulus through the valves individually or in combination as desired. Each valve has a valve body connected to the drill string in which defines a longitudinal opening therethrough and a transverse port therein interconnecting the longitudinal opening with the annulus. A longitudinally slidable valve seats on a replaceable valve seat defining a closed position of the transverse port in the valve. The valve sleeve is biased in the closed position by a spring. An actuator, uniquely sized for a specific valve in the drill string, is utilized to engage the valve sleeve and move it to an open position by hydraulic pressure applied thereabove so that fluids may be pumped down the drill string through the transverse port into the annulus. A flow control valve is positioned in the actuator so that some fluid may be directed therebelow as desired.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: February 24, 1987
    Inventor: Paul J. Tinsley
  • Patent number: 4401171
    Abstract: An underreamer having a plurality of drilling arms hingedly attached to a tubular body for movement between a retracted position and an extended position for drilling. The underreamer includes a central wash pipe for delivering drilling mud to remove cuttings and debris from the hole during drilling and an alternate flow path, generally through the body for delivering drilling fluid to the vicinity between the arm and the body to flush debris therefrom which would prevent the arms from retracting to their normal position for withdrawal from the borehole.
    Type: Grant
    Filed: December 10, 1981
    Date of Patent: August 30, 1983
    Assignee: Dresser Industries, Inc.
    Inventor: Benjamin H. Fuchs
  • Patent number: 4378050
    Abstract: An arrangement for full hole drilling, wherein a drilling bit having a passage for drilling fluid is attached to a drill pipe string. A hole wall former is provided above the bit for closing the space between the hole walls and the drill pipe string. A container containing a plugging material is provided in the interior of the drill pipe string immediately above the bit, which is adapted to let drilling fluid between the walls of said container and said drill pipe string. The bit has an axial bore of a diameter which is greater than the inside diameter of the container and which is adapted to receive the lower end of said container.
    Type: Grant
    Filed: September 16, 1981
    Date of Patent: March 29, 1983
    Inventors: Ruben A. Tatevosian, Nikolai K. Lipatov
  • Patent number: 4296822
    Abstract: A multipurpose fluid flow assisted downhole tool that is adapted for attachment to the lower end of a pipe string to be extended into a well bore and which is capable of cutting sample cores from subsurface earth formations and removing the cores for evaluation. The tool is also capable of removing ferrous metal objects from the bottom of the well bore by both mechanical and magnetic means in conjunction with object movement assistance that is provided by flowing fluid in the vicinity of the bottom of the well bore. The well servicing tool includes an internal mechanism that has the capability of achieving reverse circulation of fluid in the vicinity of the bottom of the well bore which causes fluid flow from the annulus between the tool and the well bore, upwardly into an internal object collection chamber defined by the well tool and then outwardly of the well tool and upwardly through the annulus between the pipe string and the well bore to the surface.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: October 27, 1981
    Assignee: Omega Tools International
    Inventor: Ronald D. Ormsby
  • Patent number: 4284149
    Abstract: A well drilling tool is disclosed as having a reservoir for supplying lubricant to a bearing chamber to replace that which is lost during operation of the tool, and a means for indicating to an operator at surface level when a predetermined volume of such lubricant has been lost.
    Type: Grant
    Filed: April 27, 1979
    Date of Patent: August 18, 1981
    Assignee: Engineering Enterprises, Inc.
    Inventor: Fred K. Fox
  • Patent number: 4241797
    Abstract: An improved impact tool being attached to a drill stem about ten (10) or more feet above the drill bit, and in drilling mud flows through the impact tool to the drill bit when the well is being drilled. When the drill becomes stuck, plunger means is inserted through the drilling mud passage way from the ground level and is forced down to the impact tool by pressure of the drilling mud, and on reaching the impact tool, it engages a lip forming surface at the upper end of the impact tool and seals off the flow of drilling mud. The pressure placed on the drilling mud flowing from ground level forces a set of sleeves to move downward against the force of a helical spring, causing the drilling mud to flow through a jet contoured nozzle for directing the drilling mud toward the stuck drilling bit for thereby dislodging the drilling bit.
    Type: Grant
    Filed: September 13, 1979
    Date of Patent: December 30, 1980
    Assignee: James P. Creaghan
    Inventor: John W. Allen, Jr.
  • 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
  • Patent number: 4114704
    Abstract: A turbo drill which is connected to a string of drill pipe as a rotating shaft for driving a drill bit which may be a rotary bit or a high speed solid head diamond bit. The turbine section has rotor and stator blades which are cresent shaped in cross section with each blade having an exit angle of 14.degree. - 23.degree. for maximum turbine efficiency. The bearing shaft is provided with chevron rotary seals positioned below the rotary bearings carrying both radial and vertical thrust. Fluid lubricant fills the space from the rotary seals to a predetermined level above the bearings. A piston seals the lubricant chamber and is pressurized by drilling fluid (i.e. mud) flowing through the tool. A layer of lubricant fluid overlies the first piston and has a second piston covering said fluid and transmitting pressure from the drilling fluid to the lubricant fluid surrounding the bearings.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: September 19, 1978
    Assignee: Maurer Engineering Inc.
    Inventors: William Casper Maurer, Albert Richard Sinclair, William Jesse McDonald, Jr.
  • Patent number: 4114702
    Abstract: A turbo drill which is connected to a string of drill pipe as a rotating shaft for driving a drill bit which may be a rotary bit or a high speed solid head diamond bit. The turbine section has rotor and stator blades which are cresent shaped in cross section with each blade having an exit angle of 14.degree. - 23.degree. for maximum turbine efficiency. The bearing shaft is provided with chevron rotary seals positioned below the rotary bearings carrying both radial and vertical thrust. Fluid lubricant fills the space from the rotary seals to a predetermine level above the bearings. A piston seals the lubricant chamber and is pressurized by drilling fluid (i.e. mud) flowing through the tool. A layer of lubricant fluid overlies the first piston and has a second piston covering said fluid and transmitting pressure from the drilling fluid to the lubricant fluid surrounding the bearings.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: September 19, 1978
    Assignee: Maurer Engineering Inc.
    Inventors: William C. Maurer, William J. McDonald, Jr., Charles E. Ward
  • Patent number: 4114703
    Abstract: A turbo drill which is connected to a string of drill pipe as a rotating shaft for driving a drill bit which may be a rotary bit or a high speed solid head diamond bit. The turbine section has rotor and stator blades which are crescent shaped in cross section with each blade having an exit angle of 14.degree.- 23.degree. from maximum turbine efficiency. The bearing shaft is provided with chevron rotary seals positioned below the rotary bearings carrying both radial and vertical thrust. Fluid lubricant fills the space from the rotary seals to a predetermined level above the bearings. A piston seals the lubricant chamber and is pressurized by drilling fluid (i.e., mud) flowing through the tool. A layer of lubricant fluid overlies the first piston and has a second piston covering said fluid and transmitting pressure from the drilling fluid to the lubricant fluid surrounding the bearings.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: September 19, 1978
    Assignee: Maurer Engineering Inc.
    Inventors: Lawrence Wayne Matson, Jr., Jeddy Darr Nixon, Jr., Larry Joseph Remont
  • Patent number: 4059155
    Abstract: An improved junk basket comprises a tool body having a longitudinally extending passageway therethrough and a magnet assembly disposed in the passageway. A retainer is cooperative between the magnet assembly and the tool body to retain the magnet assembly in a lower position in the passageway and selectively releasable to permit longitudinal movement of the magnet assembly to an upper position in the passageway whereby core cutting apparatus and/or an improved reverse circulation system, also included in the tool, may be employed.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: November 22, 1977
    Assignee: International Enterprises, Inc.
    Inventor: Tom R. Greer
  • Patent number: 4058163
    Abstract: A vibrating apparatus connected with a member insertable into a well bore including an insertable and retrievable member enabling the vibrating apparatus to be selectively actuated. The vibrating apparatus includes a rotatable, eccentric weight forming a rotor having selectively closable through passage means and bypass means oriented to impart rotation of the eccentric weight when the through passage is closed and pressurized fluid is required to pass through the bypass for discharge in offset relation to the axis of rotation for rotating the eccentric weight thereby vibrating the apparatus and the well bore member to which it is attached. In one embodiment of the invention, the through passage is closed by a ball valve which can be inserted into the flow passage at ground surface for movement into engagement with a valve seat by gravity together with a magnet insertable into the flow passage for retrieving the ball valve which is subject to magnetic attraction.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: November 15, 1977
    Inventor: James L. Yandell