1026 patents
Page 42 of 52
Utility
Electric dipole surface antenna configurations for electromagnetic wellbore instrument telemetry
27 Jul 21
An apparatus for detecting an electromagnetic signal originating in a wellbore includes an antenna comprising a pair of spaced apart electrodes in the ground spaced apart by a first distance having a midpoint at a second distance from the wellbore.
Dean M. Homan, Jon Brunetti, David L. Smith, Erwann Lemenager
Filed: 17 Dec 15
Utility
Attenuating tool borne noise acquired in a downhole sonic tool measurement
27 Jul 21
A technique includes receiving data representing a measurement acquired by a tool motion sensor of a downhole sonic measurement tool; and receiving data representing a measurement acquired by a pressure sensor of the sonic measurement tool.
Robert Hughes Jones, Toshimichi Wago, Can Evren Yarman
Filed: 30 May 17
Utility
NMR Asic
27 Jul 21
An NMR system includes a radio frequency (RF) NMR application-specific integrated circuit (ASIC) chip configured to generate an RF output signal and a rectifier configured to receive the RF output signal and convert the RF output signal to (a) a direct current (DC) pulsed field gradient (PFG) signal or (b) a DC trigger signal for at least one of (i) activating at least one component of an NMR system external to the NMR RF ASIC chip and (ii) synchronizing at least one component of an NMR system external to the NMR RF ASIC chip.
Yi-Qiao Song, Soumyajit Mandal, Yiqiao Tang, David McCowan
Filed: 27 Aug 15
Utility
Compensated spectroscopy measurements
27 Jul 21
Elemental concentrations in subterranean formations may be determined using neutron spectroscopy.
Tong Zhou, David Rose, Jeffrey Miles
Filed: 14 Jun 19
Utility
Binderless cBN sintering with cubic press
20 Jul 21
A method of sintering a binderless cBN body includes providing a boron nitride particle mixture into a pressure chamber, the boron nitride particle mixture having a first type of boron nitride particles and boron nitride filler particles, and the boron nitride filler particles having a different size and/or type than the first type of boron nitride particles, and sintering the boron nitride particle mixture in the pressure chamber to form the cBN body by generating a pressure in the pressure chamber of less than 7.7 GPa and heating the boron nitride particle mixture to a temperature ranging from about 1900° C. to about 2300° C., wherein the cBN body has a density of at least 97 percent.
Yahua Bao
Filed: 27 Jun 17
Utility
Apparatus and methods for well intervention
20 Jul 21
A downhole tool string for conveying within a wellbore, including an engagement device for engaging a downhole feature located within the wellbore, a first actuator for applying a substantially non-vibrating force to the engagement device while the engagement device is engaged with the downhole feature, and a second actuator for applying a vibrating force to the engagement device while the engagement device is engaged with the downhole feature.
Thomas MacDougall, Mark Milkovisch, Todor Sheiretov
Filed: 27 Jan 20
Utility
Effective pour point depressants for amidoamine emulsifiers
20 Jul 21
A composition comprising an oleaginous base fluid, an emulsifier and a liquid tertiary amide is disclosed.
Dimitri M Khramov, Yiyan Chen
Filed: 19 Dec 17
Utility
Oilfield reservoir saturation and permeability modeling
20 Jul 21
A method for modelling saturation in a reservoir, comprising: obtaining capillary pressure data representing capillary pressure in the reservoir; obtaining permeability data representing permeability in the reservoir; determining a number of pore throats represented by the capillary pressure data; creating hyperbolic tangents based on the capillary pressure data equal in number to the number of pore throats; combining hyperbolic tangents to create a curve to fit the capillary pressure data and to define hyperbolic tangent parameters; combining at least one of the hyperbolic tangent parameters with the permeability data to define a saturation height function; modelling a saturation in the reservoir using the saturation height function; and displaying the saturation model based on the saturation height function.
Sylvain Wlodarczyk, Keith Pinto, Olivier Marche, Akshat Gupta
Filed: 24 Jun 16
Utility
Downhole tool
20 Jul 21
The invention provides a downhole initiator tool (10, 210, 410, 610) for use in initiating a downhole operation, and a method of use.
Peter Moyes
Filed: 11 Nov 14
Utility
Methods and systems for use with a positive displacement motor
20 Jul 21
A method for determining a rotational frequency of a positive displacement motor positioned in a downhole portion of a drill string, the method including: providing at least one measurement device for measuring a property of a part of the drill string; providing a processor for processing a signal output by the at least one measurement device; operating the positive displacement motor whilst the part of the drill string is in a non-driven state; receiving the signal at the processor; determining, using the processor, a frequency spectrum of the signal; and determining the rotational frequency of the positive displacement motor by: identifying a peak in the frequency spectrum in a pre-determined frequency range associated with an expected rotational frequency of the positive displacement motor; and/or identifying a peak in the frequency spectrum having a pre-determined peak width associated with an expected rotational frequency of the positive displacement motor.
Benjamin Peter Jeffryes
Filed: 19 Apr 17
Utility
Mounting electronics and monitoring strain of electronics
20 Jul 21
A system for mounting electronics is disclosed.
Keith Moriarty
Filed: 31 Aug 16
Utility
Method and apparatus for determining fluid flow characteristics
20 Jul 21
A measurement device is configured in a shaped charge package to be utilized in a perforating gun section tool string.
Patrice Ligneul, Bertrand Theuveny, Tullio Moscato, Sebastien Prangere, Olivier Peyret
Filed: 16 May 14
Utility
Wired drill pipe connector and sensor system
20 Jul 21
A downhole tool and a wired drill string assembly including a downhole tool.
Julius Kusuma, Jimmy Varughese
Filed: 3 Nov 16
Utility
Downhole data transmission and surface synchronization
20 Jul 21
A telemetry method transmits data from a downhole location to a surface location.
Nirina David Raveloson, Alex David Close, Nikhil Kotian, William James Robert Thomson, Prince Mathew Samuel
Filed: 18 Jun 18
Utility
System for implementing redundancy in hydraulic circuits and actuating multi-cycle hydraulic tools
20 Jul 21
A system and method for providing redundancy in hydraulic circuits in multi-cycle hydraulic tools is described.
Chao Wang, Julien Bost, Abbigail Ullrich
Filed: 25 May 18
Utility
RF attenuating switch for use with explosives and method of using the same
20 Jul 21
A radio frequency attenuating switch including a switch having a first input for connection to an electrical power supply and first and second output leads for connecting a device such as a detonator.
Kenneth Randall Goodman
Filed: 28 Jun 16
Utility
Retractable top drive with torque tube
13 Jul 21
A retractable top drive for use with a drilling rig and process for operating a drilling rig.
Joe Rodney Berry, Robert Metz, Melvin Alan Orr
Filed: 1 May 17
Utility
Multi-cable wireline guide systems and methods
13 Jul 21
A well-logging system includes a first downhole tool coupled to a first cable for conveying the first downhole tool along a wellbore.
Nicholas Fundytus, Alejandro Martinez Pereira, Colin Wilson, Richard Parker
Filed: 22 Oct 19
Utility
Rotating choke assembly
13 Jul 21
A rotating choke assembly includes a rotating control device and a flow control device.
Vikas Rakhunde
Filed: 5 Dec 19
Utility
Thread compensator
13 Jul 21
A thread compensator for performing casing running operations.
Joe Rodney Berry
Filed: 5 Jun 20