Patents by Inventor Kristian Harestad

Kristian Harestad 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).

  • Publication number: 20230016342
    Abstract: A valve device having a valve with first connection elements for mounting the valve in a port of a wellhead, a spool unit having a through-channel, second connection elements arranged in the through-channel, and a flange, the flange configured for sealingly mounting the spool unit to the wellhead, aligning the through-channel with the port, and a plug comprising third connection elements configured for sealingly and removably engaging the second connection elements and attach the plug in the through-channel. A method for removing, replacing or arranging a valve located in a port of a wellhead is also provided.
    Type: Application
    Filed: September 26, 2022
    Publication date: January 19, 2023
    Inventor: Kristian HARESTAD
  • Patent number: 11454086
    Abstract: A valve device having a valve with first connection elements for mounting the valve in a port of a wellhead, a spool unit having a through-channel, second connection elements arranged in the through-channel, and a flange, the flange configured for sealingly mounting the spool unit to the wellhead, aligning the through-channel with the port, and a plug comprising third connection elements configured for sealingly and removably engaging the second connection elements and attach the plug in the through-channel. A method for removing, replacing or arranging a valve located in a port of a wellhead is also provided.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 27, 2022
    Assignee: Petroleum Technology Company AS
    Inventor: Kristian Harestad
  • Publication number: 20220170342
    Abstract: A valve arrangement for a wellhead of a hydrocarbon well comprises a valve for mounting in a port of a wellhead, and an actuator device for actuating the valve to move to an open position. The actuator device comprises a housing having a through channel extending between a first end, at which the valve is mounted, and a second end. The housing comprises at least one first port that leads into the through channel. The actuator device further comprises an actuator rod that is movably arranged in the through channel and configured to open the valve by the actuator rod being movable between at least a first position and a second position, and a control device arranged to control the movement of the actuator rod.
    Type: Application
    Filed: June 24, 2020
    Publication date: June 2, 2022
    Inventor: Kristian Harestad
  • Publication number: 20220162928
    Abstract: A valve arrangement for injection of an injection fluid in a process fluid tubing, comprising an inlet part connectable to an injection fluid source, an outer housing that is connectable to a process fluid tubing and comprising at least one outlet opening that enables a fluid communication between an interior of the outer housing and a process fluid tubing, and a first valve device comprising a first valve member that is arranged in the outer housing and movable within the outer housing in a longitudinal direction, and said first valve member is arranged to control an inflow of injection fluid into the valve arrangement by being movable between a closed position and an open position.
    Type: Application
    Filed: June 5, 2020
    Publication date: May 26, 2022
    Inventor: Kristian Harestad
  • Patent number: 11230893
    Abstract: A method of producing a side pocket mandrel body (1) for use in a hydrocarbon well side pocket mandrel assembly, which mandrel body comprises: a first end (2) displaying a first connection arrangement (3) for connecting the mandrel body to an up-hole section of a production tubing of the hydrocarbon well, and a second end (4) displaying a second connection arrangement (5) for connecting the mandrel body to a down-hole section of the production tubing; a longitudinal, through-going main conduit (6) for communicating with a central passageway of the production tubing; and a side pocket section (7) comprising at least one side pocket (8) for retrievably housing an injection fluid flow control device.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: January 25, 2022
    Assignee: Petroleum Technology Company AS
    Inventors: Ståle Pettersen, Kristian Harestad
  • Publication number: 20200284103
    Abstract: A method of producing a side pocket mandrel body (1) for use in a hydrocarbon well side pocket mandrel assembly, which mandrel body comprises: a first end (2) displaying a first connection arrangement (3) for connecting the mandrel body to an up-hole section of a production tubing of the hydrocarbon well, and a second end (4) displaying a second connection arrangement (5) for connecting the mandrel body to a down-hole section of the production tubing; a longitudinal, through-going main conduit (6) for communicating with a central passageway of the production tubing; and a side pocket section (7) comprising at least one side pocket (8) for retrievably housing an injection fluid flow control device.
    Type: Application
    Filed: May 22, 2020
    Publication date: September 10, 2020
    Applicant: PETROLEUM TECHNOLOGY COMPANY AS
    Inventors: Ståle Pettersen, Kristian Harestad
  • Patent number: 10662723
    Abstract: A method of producing a side pocket mandrel body for use in a hydrocarbon well side pocket mandrel assembly includes providing a continuous, solid piece of material with the through-going main conduit; in the solid piece of material, forming said at least one side pocket by machining a bore, displaying an external entrance opening, into a laterally offset section of the solid piece of material generally parallel to the main conduit such that an internal wall section of the solid piece of material is brought to separate the main conduit from the machined bore; plugging the entrance opening of the machined bore with a fluid-tight plug; providing at least one opening from an outside of the mandrel body into the at least one side pocket; providing at least one opening in the wall section; and providing the solid piece of material with the first and the second connection arrangements, thereby rendering the mandrel body connectable to the up-hole and down-hole sections of the production tubing.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: May 26, 2020
    Assignee: Petroleum Technology Company AS
    Inventors: Ståle Pettersen, Kristian Harestad
  • Patent number: 10450821
    Abstract: A wellhead port plug assembly includes a first plug body including connection elements allowing the first plug body to be sealingly and removably mounted in a port of a wellhead of a hydrocarbon well. The plug assembly includes a spool unit displaying an axial through-channel extending between a first end and a second end of the spool unit, which spool unit includes a first flange section arranged at the first end for sealingly mounting the spool unit to the wellhead aligning the through-channel with the port, and a second flange section arranged at the second end; a second plug body including connection elements allowing the second plug body to be sealingly and removably mounted in the through-channel; and a blind flange which is sealingly and removably mounted to the second flange section allowing the second plug body and the first plug body to be removed from the wellhead via the through-channel.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: October 22, 2019
    Assignee: PETROLEUM TECHNOLOGY COMPANY AS
    Inventors: Lino Guedes, Andre Bolager, Erling Kleppa, Kristian Harestad, Trond Kvasnes
  • Publication number: 20190284900
    Abstract: A valve device having a valve with first connection elements for mounting the valve in a port of a wellhead, a spool unit having a through-channel, second connection elements arranged in the through-channel, and a flange, the flange configured for sealingly mounting the spool unit to the wellhead, aligning the through-channel with the port, and a plug comprising third connection elements configured for sealingly and removably engaging the second connection elements and attach the plug in the through-channel. A method for removing, replacing or arranging a valve located in a port of a wellhead is also provided.
    Type: Application
    Filed: December 4, 2017
    Publication date: September 19, 2019
    Inventor: Kristian HARESTAD
  • Patent number: 10167699
    Abstract: A cementing device for establishing a false bottom in a well bore for formation of a cement plug in the well bore. The cementing device includes a tool body which has a front end and a rear end. The cementing device further includes at least one propulsion device which is attached to the front end and/or the rear end of the tool body and is adapted for being propelled by a fluid.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: January 1, 2019
    Assignee: PERIGON AS
    Inventor: Kristian Harestad
  • Publication number: 20180030809
    Abstract: A cementing device for establishing a false bottom in a well bore for formation of a cement plug in the well bore. The cementing device includes a tool body which has a front end and a rear end. The cementing device further includes at least one propulsion device which is attached to the front end and/or the rear end of the tool body and is adapted for being propelled by a fluid.
    Type: Application
    Filed: February 12, 2016
    Publication date: February 1, 2018
    Applicant: PERIGON AS
    Inventor: Kristian Harestad
  • Publication number: 20170241216
    Abstract: A method of producing a side pocket mandrel body for use in a hydrocarbon well side pocket mandrel assembly includes providing a continuous, solid piece of material with the through-going main conduit; in the solid piece of material, forming said at least one side pocket by machining a bore, displaying an external entrance opening, into a laterally offset section of the solid piece of material generally parallel to the main conduit such that an internal wall section of the solid piece of material is brought to separate the main conduit from the machined bore; plugging the entrance opening of the machined bore with a fluid-tight plug; providing at least one opening from an outside of the mandrel body into the at least one side pocket; providing at least one opening in the wall section; and providing the solid piece of material with the first and the second connection arrangements, thereby rendering the mandrel body connectable to the up-hole and down-hole sections of the production tubing.
    Type: Application
    Filed: October 29, 2015
    Publication date: August 24, 2017
    Applicant: PETROLEUM TECHNOLOGY COMPANY AS
    Inventors: Ståle PETTERSEN, Kristian HARESTAD
  • Patent number: 9611720
    Abstract: A valve arrangement for controlling the flow of an injection fluid from a well annulus into a hydrocarbon well, includes a valve body being insertable into a side pocket mandrel, an injection fluid valve for controlling the flow of the injection fluid through the valve arrangement and a bellows arrangement including a first pressure member, a second pressure member and at least one bellows element. A control line port is arranged in the valve body for fluid communication with a control line of the well and a control fluid chamber in fluid communication with the control line port comprises a hydraulic control fluid for biasing the injection fluid valve towards the open position.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: April 4, 2017
    Assignee: PETROLEUM TECHNOLOGY COMPANY AS
    Inventors: Ole Sevheim, Erling Kleppa, Kristian Harestad
  • Patent number: 9580991
    Abstract: A shear valve (1) for use in a downhole tool between the annulus and tubing in a well comprises an outer housing (11) and an internal body (13) movable in a longitudinal direction within the housing when the valve is activated, and at least one obstruction device (16, 10) which can be arranged to obstruct the internal body from moving. The obstruction device is capable of being deactivated by pressure from the tubing side of the valve.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: February 28, 2017
    Assignee: PETROLEUM TECHNOLOGY COMPANY AS
    Inventors: Kristian Harestad, Helge Skorve, Magnar Tveiten
  • Publication number: 20170044861
    Abstract: A wellhead port plug assembly includes a first plug body including connection elements allowing the first plug body to be sealingly and removably mounted in a port of a wellhead of a hydrocarbon well. The plug assembly includes a spool unit displaying an axial through-channel extending between a first end and a second end of the spool unit, which spool unit includes a first flange section arranged at the first end for sealingly mounting the spool unit to the wellhead aligning the through-channel with the port, and a second flange section arranged at the second end; a second plug body including connection elements allowing the second plug body to be sealingly and removably mounted in the through-channel; and a blind flange which is sealingly and removably mounted to the second flange section allowing the second plug body and the first plug body to be removed from the wellhead via the through-channel.
    Type: Application
    Filed: April 24, 2015
    Publication date: February 16, 2017
    Applicant: PETROLEUM TECHNOLOGY COMPANY AS
    Inventors: Lino GUEDES, Andre BOLAGER, Erling KLEPPA, Kristian HARESTAD, Trond KVASNES
  • Publication number: 20150330183
    Abstract: A valve arrangement (8) for controlling the flow of an injection fluid from a well annulus (4) into a well conduit (5) of a hydrocarbon well (1), comprising a valve body (9) being insertable into a side pocket mandrel (6) of the hydrocarbon well (1), the valve 23- body comprising: at least one inlet port (10) for receiving the injection fluid from the well annulus; at least one outlet port (11) for delivering the injection fluid to the well conduit; an injection fluid valve (19) being arranged in fluid communication with the least one inlet port and the at least one outlet port and being operable between an open position and a closed position for controlling the flow of the injection fluid through the valve arrangement; an actuating device (22) for actuating the injection fluid valve towards the closed position; and a bellows arrangement (24) comprising a first pressure member (26), a second pressure member (27) and at least one bellows element (34, 35) enclosing at least one bellows chamber comprising a bell
    Type: Application
    Filed: February 4, 2014
    Publication date: November 19, 2015
    Inventors: Ole Sevheim, Erling Kleppa, Kristian Harestad
  • Patent number: 9157294
    Abstract: A wave-inducing device for cementing a casing in a borehole. The wave-inducing device is designed for arrangement in the casing and includes a movable element which, when the wave-inducing device is arranged in the casing, is designed to be moved by cement and/or another fluid flowing through the casing so that wave motions and/or vibrations are provided in the cement during the cementing of the casing.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: October 13, 2015
    Assignee: Perigon Handel AS
    Inventors: Erling Kleppa, Kristian Harestad
  • Publication number: 20140299320
    Abstract: A wave-inducing device for cementing a casing in a borehole. The wave-inducing device is designed for arrangement in the casing and includes a movable element which, when the wave-inducing device is arranged in the casing, is designed to be moved by cement and/or another fluid flowing through the casing so that wave motions and/or vibrations are provided in the cement during the cementing of the casing.
    Type: Application
    Filed: March 16, 2012
    Publication date: October 9, 2014
    Applicant: PERIGON HANDEL AS
    Inventors: Erling Kleppa, Kristian Harestad
  • Publication number: 20140130893
    Abstract: A shear valve (1) for use in a downhole tool between the annulus and tubing in a well comprises an outer housing (11) and an internal body (13) movable in a longitudinal direction within the housing when the valve is activated, and at least one obstruction device (16, 10) which can be arranged to obstruct the internal body from moving. The obstruction device is capable of being deactivated by pressure from the tubing side of the valve.
    Type: Application
    Filed: March 15, 2012
    Publication date: May 15, 2014
    Applicant: PETROLEUM TECHNOLOGY COMPANY AS
    Inventors: Kristian Harestad, Helge Skorve, Magnar Tveiten
  • Patent number: 8136601
    Abstract: A device for increasing the production flow in a production tubing, where the production tubing has at least one inlet or port for adding a fluid medium, adds the fluid medium through the at least one inlet or port at an angle ? between 90 and 0 degrees with a longitudinal axis of the production tubing. The device further has elements that provide a rotation of the added fluid medium.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: March 20, 2012
    Assignee: Petroleum Technology Company
    Inventors: Magnar Tveiten, David Hutchinson, Egil Josefsen, Kristian Harestad