Patents by Inventor Peter Nellessen, Jr.
Peter Nellessen, Jr. 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).
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Patent number: 9657563Abstract: A system for communicating between a downhole tool and a surface location. The system may include a downhole tool disposed within a subsea riser. The downhole tool may include a device that actuates between first and second positions. An internal transducer may be coupled to the downhole tool and transmit a signal indicative of the position of the device. An external transducer may be positioned on an exterior of a riser. The external transducer may receive the signal from the internal transducer through the riser. A transponder may be positioned on an exterior of the riser and coupled to the external transducer. The transponder may transmit a signal to a surface location indicative of the position of the device.Type: GrantFiled: July 11, 2013Date of Patent: May 23, 2017Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Laura Robin Schuhrke, Ronald James Spencer, Jr., Peter Nellessen, Jr.
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Patent number: 9637994Abstract: A pressure tolerant battery that may be utilized in a subsea riser includes one or more lithium polymer cells enclosed in a pressure compensated housing. The pressure tolerant battery can be mounted on a landing string a disposed in the riser annulus to provide electrical power to landing string and subsea well system devices.Type: GrantFiled: December 21, 2012Date of Patent: May 2, 2017Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventor: Peter Nellessen, Jr.
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Patent number: 9528328Abstract: A tensions compensator assembly for a slip type joint in an offshore work string. The assembly includes a chamber at the joint which is constructed in a manner to offset or minimize a pressure differential in a production channel that runs through the work string. Thus, potentially very high pressures running through the string are less apt to prematurely force actuation and expansiveness of the slip joint. Rather, the expansive movement of the joint is more properly responsive to heave, changes in offshore platform elevation and other outside forces of structural concern.Type: GrantFiled: November 8, 2012Date of Patent: December 27, 2016Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Gary L. Rytlewski, Laure Mandrou, Peter Nellessen, Jr.
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Patent number: 9222321Abstract: An apparatus includes an engagement device to be disposed on a landing string. The engagement device includes a retracted state to allow the apparatus to be run inside a riser and an expanded state to engage the riser to secure the apparatus to the riser. The apparatus further includes an actuator assembly to be disposed on the landing string. The actuator assembly is remotely actuatable from a sea surface to rotate a tubing of the landing string relative to the engagement device to rotate the landing string to orient a tubing hanger assembly.Type: GrantFiled: August 24, 2012Date of Patent: December 29, 2015Assignee: Schlumberger Technology CorporationInventors: Peter Nellessen, Jr., Matthew Niemeyer, Laure Mandrou, Baptiste Germond, John Yarnold
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Publication number: 20150226054Abstract: A system for communicating between a downhole tool and a surface location. The system may include a downhole tool disposed within a subsea riser. The downhole tool may include a device that actuates between first and second positions. An internal transducer may be coupled to the downhole tool and transmit a signal indicative of the position of the device. An external transducer may be positioned on an exterior of a riser. The external transducer may receive the signal from the internal transducer through the riser. A transponder may be positioned on an exterior of the riser and coupled to the external transducer. The transponder may transmit a signal to a surface location indicative of the position of the device.Type: ApplicationFiled: July 11, 2013Publication date: August 13, 2015Inventors: Laura Robin Schuhrke, Ronald James Spencer, JR., Peter Nellessen, JR.
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Patent number: 8978766Abstract: A temperature compensated accumulator and method for use thereof downhole in a well. The accumulator may include a housing with separate bulkhead and piston assemblies. Thus, one assembly may include a hydraulic fluid chamber separated from a gas precharge pressure chamber by a piston and the other assembly may include an ambient pressure chamber separated from an atmospheric chamber by another piston. Additionally a pressure relief and check valve assembly may be located at a pressure relief chamber between the other assembly sections. Thus, venting to or from the gas precharge pressure chamber may take place upon exposure to a predetermined decreased or elevated temperature so as to maintain a substantially constant precharge level for the accumulator, for example, in spite of dramatic changes in downhole temperatures.Type: GrantFiled: September 13, 2011Date of Patent: March 17, 2015Assignee: Schlumberger Technology CorporationInventors: Peter Nellessen, Jr., Quangen Du
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Publication number: 20140054044Abstract: An apparatus includes an engagement device to be disposed on a landing string. The engagement device includes a retracted state to allow the apparatus to be run inside a riser and an expanded state to engage the riser to secure the apparatus to the riser. The apparatus further includes an actuator assembly to be disposed on the landing string. The actuator assembly is remotely actuatable from a sea surface to rotate a tubing of the landing string relative to the engagement device to rotate the landing string to orient a tubing hanger assembly.Type: ApplicationFiled: August 24, 2012Publication date: February 27, 2014Inventors: Peter Nellessen, JR., Matthew W. Niemeyer, Laure Mandrou, Baptiste Germond, John Yarnold
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Publication number: 20130061937Abstract: A temperature compensated accumulator is provided.Type: ApplicationFiled: September 13, 2011Publication date: March 14, 2013Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Peter Nellessen, JR., Quangen Du
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Publication number: 20090178847Abstract: A method and a device for subsea wire line drilling permit the recovery of a full core barrel with a coiled tubing, without pulling up a drill string.Type: ApplicationFiled: January 10, 2008Publication date: July 16, 2009Applicant: PERRY SLINGSBY SYSTEMS, INC.Inventors: Peter Nellessen, JR., Jonathan Bruce Machin, Harold Marshall Pardey
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Publication number: 20090178848Abstract: A subsea drilling system includes a drilling module having a tool carousel being removable and replaceable in or out of water, a skid module and an ROV to be connected to and disconnected from the skid module in or out of water, for operating the subsea drilling system with the ROV. A method for operating a subsea drilling system includes removing a tool carousel from a drilling module and replacing the tool carousel with another tool carousel, in or out of water. An ROV is connected to a skid module and disconnected from the skid module in or out of water. The subsea drilling system is operated with the ROV.Type: ApplicationFiled: January 10, 2008Publication date: July 16, 2009Applicant: PERRY SLINGSBY SYSTEMS, INC.Inventors: Peter Nellessen, JR., Jonathan Bruce Machin, Harold Marshall Pardey
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Patent number: 5485973Abstract: Cable is stored a receptacle by a coiling mechanism. In the coiling mechanism, an arm receives the cable at an axis, and supports the cable as it passes from the axis to a feed end located at a point radially spaced from the axis. A cable driver forces the cable into the arm at the axis and toward the feed end. And an arm driver assists rotation of the arm about the axis while the cable is being forced into the arm at the axis.Type: GrantFiled: September 26, 1994Date of Patent: January 23, 1996Assignee: Benthos, Inc.Inventor: Peter Nellessen, Jr.
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Patent number: 5423156Abstract: The instant invention is a strap for installation over sheathing to hold the sheathing to an underlying structural frame member through the use of interconnecting bands and saddle. The saddle is positioned on the underside of a structural member and receives the bands. Tabs are provided at both ends of the sheathing strap to receive the connecting bands and are also used to align the strap with an underlying structural member. Patterns of through holes are provided in the strap as a fastener alignment guide and are to be used for installation of fasteners after the strap is aligned with the underlying structural member.Type: GrantFiled: August 23, 1993Date of Patent: June 13, 1995Inventor: Peter Nellessen, Jr.
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Patent number: 4841894Abstract: A trolley to convey brushes for cleaning a stationary hull is drawn along the bottom and sides of the hull. Brushes are supported by variable buoyancy chambers to make the biasing of the brushes against the hull also in turn variable. The trolley can be supported and stored in a dock or alternatively supported by a floating platform. There is an electrical motor drive for a chain which pulls the trolley. A diesel prime mover may be used in the floating platform to generate power for the electric motor chain drive and for the submersible motors.Type: GrantFiled: March 2, 1988Date of Patent: June 27, 1989Inventor: Peter Nellessen, Jr.