公开(公告)号：US12117584B2

公开(公告)日：2024-10-15

申请号：US17934750

申请日：2022-09-23

Applicant: PETROCHINA COMPANY LIMITED

Inventor： Jiahuan He ,  Lurui Dang ,  Keming Zhou ,  Cheng Lei ,  Mei Huang ,  Jintao Zhang ,  Bo Kong

IPC: G01V3/18 ,  E21B49/00 ,  G01V3/38

CPC classification number: G01V3/18 ,  E21B49/00 ,  G01V3/38

Abstract: The present disclosure provides a device and methods for determining the original stratum direction of a core. The device includes a confining pressure pump, a resistance meter, and a core holder composed of upper and lower portions. The present disclosure further provides three methods for determining the original stratum direction of the core. The three methods respectively use the device to measure resistance values at different positions of the core, and compare a test result with an imaging result of resistivity imaging logging data to determine the rock direction of the core in a stratum.

公开(公告)号：US20240302557A1

公开(公告)日：2024-09-12

申请号：US18280793

申请日：2022-03-09

Applicant: Mettler-Toledo Safeline Ltd.

Inventor： Christos Ktistis ,  Iain Rist

IPC: G01V3/10 ,  G01N27/9013 ,  G01V3/38

CPC classification number: G01V3/107 ,  G01V3/38 ,  G01N27/9026

Abstract: Methods for operating a metal detector that includes a balanced coil system with a transmitter coil connected to a transmitter unit and first and second receiver coils connected to an input of a receiver unit. The transmitter unit includes a transmitter signal path for which a transmitter signal with at least one fixed or selectable operating frequency and a related quadrature signal are provided. The transmitter signal is applied to an input of a transmitter amplifier that forwards the amplified transmitter signal directly or via a transmitter matching unit to the transmitter coil. The receiver unit includes at least one receiver signal path in which the modulated receiver signal received from the balanced coil system is applied directly or via a receiver matching unit to a receiver amplifier, which applies the amplified modulated receiver signal directly or indirectly to a receiver phase sensitive detector, which compares the modulated receiver signal with reference signals, which correspond to the transmitter signal and the quadrature signal, to produce a demodulated complex receiver signal with in-phase receiver signal components and quadrature receiver signal components, which are processed in a signal processing unit which comprises at least one signal processing path, in which signal components of the complex receiver signal that relate to goods or noise are suppressed and in which signal components originating from metal contaminants are further processed. At least one transmitter measurement channel is provided, which receives a measurement signal taken from the transmitter signal path and which includes a measurement amplifier, which amplifies and forwards the measurement signal directly or indirectly to a measurement phase sensitive detector, which compares the measurement signal with the reference signals, which correspond to the transmitter signal and the quadrature signal, to produce a complex measurement signal with in-phase measurement signal components and quadrature measurement components, which complex measurement signal and complex receiver signal are applied to a first correction module in which signal components caused by instabilities of the transmitter unit are removed from the complex receiver signal.

公开(公告)号：US20240201414A1

公开(公告)日：2024-06-20

申请号：US18553628

申请日：2021-04-28

Applicant: Schlumberger Technology Corporation ,  Saudi Arabian Oil Company

Inventor： Ping Zhang ,  Gong Li Wang ,  Wael Abdallah ,  Dean Homan ,  Shouxiang Ma

IPC: G01V3/38 ,  E21B44/00 ,  E21B49/00 ,  G01V3/30

CPC classification number: G01V3/38 ,  E21B44/00 ,  E21B49/00 ,  G01V3/30 ,  E21B2200/20

Abstract: A method for characterizing a subterranean formation is provided that involves obtaining resistivity log data measured by a logging-while-drilling electromagnetic tool operated while drilling a wellbore that traverses the subterranean formation, and calculating at least one of a first data value representing water saturation of the subterranean formation and a second data value representing cation exchange capacity (CEC) of the subterranean formation from the resistivity log data. In embodiments, the method can further involve storing at least one of the first data value and the second data value in computer memory, and/or outputting at least one of the first data value and the second data value as part of a log for well placement, formation evaluation. geological modeling, or reservoir management. The first data value and/or the second data value can also be used for geo-steering the drilling of the wellbore.

公开(公告)号：US12013511B2

公开(公告)日：2024-06-18

申请号：US18315252

申请日：2023-05-10

Applicant: Saudi Arabian Oil Company

Inventor： Mokhles M. Mezghani ,  Bodong Li ,  Abdul Hafiz Masri

IPC: G01V3/34 ,  G01N33/24 ,  G01V3/08 ,  G01V3/38

CPC classification number: G01V3/34 ,  G01V3/38 ,  G01N33/241 ,  G01V3/08

Abstract: A geological core inspection system that includes a table to support core samples for inspection, a robotic geological core inspection system including a core sample sensing system to acquire sample inspection data (including an imaging sensor and a core sample position sensor), a core sample interaction system (including a dispensing system and a scoring system), and a robotic positioning system, and a control and communications system to provide for remote control of the core sample sensing system. The system further including a remote geological core inspection system to receive and communicate remote commands specifying requested operations of the robotic geological core inspection system (the control and communications system adapted to control operation of the core sample sensing system in response to the remote commands to perform the requested operations) and receive and present core data.

公开(公告)号：US11988801B2

公开(公告)日：2024-05-21

申请号：US18187651

申请日：2023-03-21

Applicant: Halliburton Energy Services, Inc.

Inventor： Jie Yang

IPC: G01V3/32 ,  G01V3/38

CPC classification number: G01V3/32 ,  G01V3/38

Abstract: Methods to operate an NMR tool, methods to simulate a numerically-controlled oscillator of an NMR tool in real time, and downhole NMR tools are presented. A method to operate an NMR tool includes determining a phase shift of a sinusoidal wave, determining a number of look-up tables and a number of terms of Taylor Expansions performed to obtain a value corresponding to a phase angle of the phase shift, and separating the phase angle into a first component and a second component. The method also includes obtaining a first value corresponding to the first component from the number of look-up tables, performing the number of terms of Taylor Expansions on the second component to obtain a second value corresponding to the second component, combining the first value and the second value to obtain the value of the phase angle, and generating the sinusoidal wave having the phase shift.

公开(公告)号：US11960047B1

公开(公告)日：2024-04-16

申请号：US17379867

申请日：2021-07-19

Applicant: SeeScan, Inc.

Inventor： Mark S. Olsson ,  Stephanie M. Bench ,  Michael J. Martin ,  Ray Merewether ,  Paul Wisecaver ,  Austin Rutledge

IPC: G06F11/30 ,  G01V3/08 ,  G01V3/15 ,  G01B7/26 ,  G01V3/38

CPC classification number: G01V3/081 ,  G01B7/26 ,  G01V3/15 ,  G01V3/38

Abstract: A method for locating buried utilities in a utility locator is disclosed. The method may include receiving, at an antenna array for receiving magnetic field signals, a plurality of magnetic field signals at predefined signal frequencies in a predefined frequency suite, generating, in a receiver coupled to an output of the antenna array, a first receiver output signal, generating, in a processing element coupled to the receiver, a first set of data associated with the two or more signal components, and storing, in a non-transitory memory of the locator, the first set of data.

公开(公告)号：US20240103195A1

公开(公告)日：2024-03-28

申请号：US18139869

申请日：2023-04-26

Applicant: Terrasee Tech, LLC

Inventor： Philip Clegg

IPC: G01V3/14 ,  G01B7/26 ,  G01V3/10 ,  G01V3/38

CPC classification number: G01V3/14 ,  G01B7/26 ,  G01V3/10 ,  G01V3/38

Abstract: A method for determining depth of a material is disclosed. The method includes transmitting a signal from an antenna at a location. The signal includes a fundamental frequency and the signal penetrates ground under the location. The location is selected to locate a material at a depth under the location. The fundamental frequency matches a known resonant frequency of a resonant atom of a molecule of the material. The method includes detecting a reflected wave on the antenna, determining a time difference between transmission of the signal and detection of the reflected wave on the antenna, and determining the depth to the material based on the time difference and a reflected velocity corresponding to the resonant atom.

公开(公告)号：US11940589B2

公开(公告)日：2024-03-26

申请号：US17852982

申请日：2022-06-29

Applicant: Landmark Graphics Corporation

Inventor： Alice Butt ,  Mykhailo Ponomarev ,  Einar Mageroy

IPC: G01V3/38 ,  E21B47/02 ,  E21B47/022 ,  G01V1/40

CPC classification number: G01V3/38 ,  E21B47/022 ,  G01V1/40

Abstract: Turning points in stratigraphy (TPS) can be determined, which then can be used to improve the representation of the borehole path in relation to layers of the subterranean formation. The TPS can be determined by analyzing each directional survey point in relation to the nearest layer of the subterranean formation. In determining which layer is the nearest layer, the process can analyze the layer type, such as conformable or unconformable, whether a fault intersects the borehole, the angle of the layer in relation to the borehole path, or whether the true stratigraphic thickness (TST) changes from one of a positive parameter or negative parameter to the other. The generated TPS can be used by a system as input or can be displayed for a user where the segmented borehole path can be aligned using the calculated TST to improve the ability of the user to analyze the representation.

公开(公告)号：US20240078408A1

公开(公告)日：2024-03-07

申请号：US18240554

申请日：2023-08-31

Applicant: Matthew Miller

Inventor： Matthew Miller

IPC: G06N3/044 ,  G01V3/10 ,  G01V3/38 ,  G06N3/09

CPC classification number: G06N3/044 ,  G01V3/10 ,  G01V3/38 ,  G06N3/09

Abstract: A system includes a metal detector configured to provide an input signal responsive to being proximate an object; and a processing device configured to: receive the input signal from the metal detector; determine a plurality of features from the input signal; provide the plurality of features as input to a trained machine learning model (MLM); receive output from the trained MLM; and responsive to detection, based on the output, that the object comprises metal, cause output of a notification.

公开(公告)号：US11892585B1

公开(公告)日：2024-02-06

申请号：US17958715

申请日：2022-10-03

Applicant: SeeScan, Inc.

Inventor： Mark S. Olsson ,  Sequoyah Aldridge ,  Michael J. Martin ,  Youngin Oh

IPC: G01V3/08 ,  G01V3/10 ,  G01V3/165 ,  G01V3/15 ,  G01V3/38 ,  G01R33/02 ,  G01R33/12

CPC classification number: G01V3/165 ,  G01V3/08 ,  G01V3/10 ,  G01V3/104 ,  G01V3/15 ,  G01V3/38 ,  G01R33/02 ,  G01R33/1215 ,  G01R33/1223

Abstract: The present disclosure relates to systems and methods for uniquely identifying buried utilities in a multi-utility region by sensing magnetic fields emitted from the buried utilities.