Patents by Inventor Michael Carmody

Michael Carmody has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5906238
    Abstract: Several downhole flow control devices are disclosed which are meterable and are also capable of shutting of a particular zone in a well. The several embodiments include a multiple valve body, a toroidal inflatable valve, and a series of related choke systems. The downhole flow control choke mechanisms each include a downhole electronics package to provide programming or decision making capacity as well as motor actuation systems. Each choke mechanism also includes a system whereby the device can be converted to manual operation and actuated by a conventional shifting tool.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: May 25, 1999
    Assignee: Baker Hughes Incorporated
    Inventors: Michael A. Carmody, Kevin R. Jones, Robert J. Coon, Douglas J. Murray, Mark E. Hopmann, Steven L. Jennings, Brian A. Roth
  • Patent number: 5896924
    Abstract: Computer control and sensory information are combined with gas lift valve having a plurality of individual openings which are openable or closeable individually to provide varying flow rates of the lift gas. Each of the openings is controlled and is sensitive to downhole sensors.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: April 27, 1999
    Assignee: Baker Hughes Incorporated
    Inventors: Michael A. Carmody, Robert Coon, James H. Kritzler, Brian A. Roth, Terry R. Bussear, Bruce E. Weightman
  • Patent number: 5832996
    Abstract: A downhole controller for a flow control device. The controller is responsive to commands from the surface or from downhole and controls the flow device using a four way solenoid actuated spool valve and a hydraulically actuated piston system connected to the flow control device.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: November 10, 1998
    Assignee: Baker Hughes Incorporated
    Inventors: Michael A. Carmody, Kevin R. Jones, Robert J. Coon, Douglas J. Murray, Mark E. Hopmann, Steven L. Jennings
  • Patent number: 4981177
    Abstract: A downhole tool, such as a safety valve or a stand-alone nipple, has a tubular housing. An axially extending bore is provided in the wall of the housing. A radially extending recess is provided in the internal bore wall of the housing, encompassing the axially extending bore, and a control fluid pipe is passed through the bore and the recess. A cutting tool is mounted for radial movements in the recess and is actuated by downward jarring forces imparted by an auxiliary tool. The control pipe is severed by the cutting element and the lower severed end portion of the control pipe is concurrently crimped to close such end portion.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: January 1, 1991
    Assignee: Baker Hughes Incorporated
    Inventors: Michael A. Carmody, Erik P. V. Eriksen, Lars Vinje
  • Patent number: 4944351
    Abstract: A method and apparatus for replacing a defective downhole well safety valve of the full bore type by a wireline valve sealably insertable in the bore of the housing for the defective valve by wireline and operating the wireline inserted safety valve by fluid pressure supplied through an existing control fluid passage provided in the original safety valve housing. An internally projecting integral protuberance is provided in the bore of the original safety valve housing and a connecting fluid conduit is provided between the interior of the protuberance and the existing control fluid passage. A cutting tool is mounted on an axially shiftable sleeve disposed immediately above the protuberance. The axially shiftable sleeve is manipulated by an auxiliary tool temporarily inserted in the bore of the original valve housing and causing the cutting tool to remove the protuberance and thus establish fluid communication for the control fluid with the internal bore of the original safety valve housing.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: July 31, 1990
    Assignee: Baker Hughes Incorporated
    Inventors: Erik P. V. Eriksen, Brian K. Drakeley, Michael A. Carmody
  • Patent number: 4796705
    Abstract: In a safety valve having an axially shiftable actuating sleeve operable to move a valve head from a closed to an open position, the actuating movement of the actuating sleeve is normally produced by a small diameter piston mounted on an axially extending spindle secured to the valve housing and cooperating with a primary cylinder which is abuttingly secured to the actuating sleeve. A secondary spindle and cooperating cylinder are provided which are supplied with fluid pressure by an entirely separate line extending to the well surface. The second cylinder has only abutting contact with the actuating sleeve and may be utilized to effect the movement of the actuating sleeve in the event of the failure of the primary cylinder. In a modification, a fixed cylinder housing defines a pair of secondary cylinder bores in which secondary rod pistons are slidably mounted to effect the movement of the actuating sleeve.
    Type: Grant
    Filed: August 26, 1987
    Date of Patent: January 10, 1989
    Assignee: Baker Oil Tools, Inc.
    Inventors: Michael A. Carmody, Jefferey J. Lembcke
  • Patent number: 4503913
    Abstract: A subsurface control fluid pressure actuated well safety valve employs one or more spindles attached to the valve housing and spindle sleeves attached to a shiftable actuating flow tube. The spindles and spindle sleeves are positioned between the valve housing and the flow tube and a change in the pressure force acting on the spindle and on the spindle sleeve will result in relative movement of the spindle sleeve with respect to the spindle to cause the flow tube actuator to shift and open a fluid transmission conduit.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: March 12, 1985
    Assignee: Baker Oil Tools, Inc.
    Inventor: Michael A. Carmody
  • Patent number: 4457376
    Abstract: The disclosure relates to an improved flapper type saftey valve and valve housing for use in subterranean wells wherein the flapper valve is actuated from a horizontal closed position to a vertical open position by contact with a downwardly moving actuating sleeve. The top surface of the valve is elevated so that the bottom edge of the actuating sleeve always contacts the flapper valve at a position spaced from the axis of the pivot mounting, thereby assuring that the opening force applied to the flapper valve has a maximum moment arm in order to overcome any fluid pressure differential existing across the flapper valve. The valve is mounted in an eccentic bore on an eccentric mounting base and fully opened flapper valve provides maximum flow area through the valve.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: July 3, 1984
    Assignee: Baker Oil Tools, Inc.
    Inventors: Michael A. Carmody, Michael L. Cognevicy
  • Patent number: 4427071
    Abstract: The disclosure relates to an improved flapper type safety valve for use in subterranean wells wherein the flapper valve is actuated from a horizontal closed position to a vertical open position by contact from a downwardly moving actuating sleeve. The top surface of the valve is elevated so that the bottom edge of the actuating sleeve always contacts the flapper valve at a position maximally spaced from the axis of its pivot mounting, thereby assuring that the opening force applied to the flapper valve has a maximum moment arm in order to overcome any fluid pressure differential existing across the flapper valve.
    Type: Grant
    Filed: February 18, 1982
    Date of Patent: January 24, 1984
    Assignee: Baker Oil Tools, Inc.
    Inventor: Michael A. Carmody
  • Patent number: 4415036
    Abstract: The disclosure relates to a flapper type safety valve incorporating a pressure equalizing feature in the body of the flapper valve. A bypass aperture in the flapper valve communicates with a downwardly facing conical sealing surface. A conically shaped sealing plug is insertable in the bypass aperture and has a post portion projecting upwardly through such aperture. A diametral slot is provided in the top surface of the flapper valve body to mount a leaf spring which is secured to the upstanding post. An abutment element is also secured to the top end of the upstanding post and projects diametrically into the path of the actuating sleeve normally utilized to effect the opening of the flapper valve.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: November 15, 1983
    Assignee: Baker Oil Tools, Inc.
    Inventors: Michael A. Carmody, Michael L. Cognevich
  • Patent number: 4411316
    Abstract: A subterranean well valve assembly includes a valve mounted within an annular housing which is actuated by an annular plunger co-axially mounted within the housing. The plunger is longitudinally shiftable to open the valve, in response to a fluid pressure signal. Within the housing, releasable latches are provided for engaging an annular groove, thereby temporarily locking the plunger in its lower position. The valve assembly also includes a permanent lock open mechanism comprising an annular locking mandrel, including a latch element. Longitudinal movement of the mandrel locks the mandrel in place, thereby interfering with subsequent retraction of the plunger from locked position.
    Type: Grant
    Filed: February 9, 1981
    Date of Patent: October 25, 1983
    Assignee: Baker International Corporation
    Inventor: Michael A. Carmody
  • Patent number: 4356867
    Abstract: A method and an apparatus for setting the temporary lock-open mechanism incorporated in a safety valve employed in the subterranean well, the apparatus including an annular mandrel having an external, axially movable, radially expandable collet operated by an axially movable prong concentrically arranged within the mandrel housing.The temporary lock-open mechanism of the valve includes latch fingers which are adapted to engage the end of a plunger which opens the valve, a spring biased lock-open sleeve and release keys for holding the sleeve in a passive position.The valve is temporarily locked in an open position by introducing control line pressure into the valve for opening it and moving its lock-open mechanism to a position where the expandable collet of the apparatus can release keys that restrain the lock-open sleeve.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: November 2, 1982
    Assignee: Baker International Corporation
    Inventor: Michael A. Carmody
  • Patent number: 4295528
    Abstract: A locking device and a method and apparatus are provided for emplacing the locking device within a selected one of a plurality of landing nipples positioned along a well conduit. Each nipple typically includes a seal bore portion having a bore diameter less than the conduit bore diameter and a recessed portion located above the seal bore having a diameter greater than the conduit bore diameter. The locking device includes a housing for retaining a plurality of circumferentially spaced expandable locking dogs. A camming sleeve is axially slidably within the housing and is utilized to support the dogs in one of three selected positions: a retracted position, a partially expanded no-go position, or a fully expanded locked position. The locking device is lowered down the well conduit on a running tool with the dogs in the retracted position until the running tool has passed through the seal bore of the nipple located directly above the selected landing nipple.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: October 20, 1981
    Assignee: Baker International Corporation
    Inventor: Michael Carmody
  • Patent number: 4079356
    Abstract: An electronic key comprises a first binary counter and a first multiplexer or pulse code modulating a uniform clock pulse train to produce a first coded pulse train modulated with a given code. The key is connected to an electronic lock comprising: a second binary counter and a second multiplexer for pulse code modulating the same clock pulse train to produce a second coded pulse train modulated with the same code; an EXCLUSIVE-OR gate to which said first and second multiplexers are connected; a first NAND gate having one input connected to the output of the EXCLUSIVE-OR gate; a flip-flop or a binary counter having its clock input connected to the output of the NAND gate and an inital logical ONE output connected to a second input of the NAND gate; a second NAND gate having one input connected to the output of the flip-flop or counter and another input connected to the output of the second multiplexer; and a binary output counter having its clock input connected to the output of the second NAND gate.
    Type: Grant
    Filed: March 30, 1976
    Date of Patent: March 14, 1978
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Christ W. Anagnost, Michael A. Carmody