公开(公告)号：US12106664B2

公开(公告)日：2024-10-01

申请号：US17968265

申请日：2022-10-18

Applicant: NEC Laboratories America, Inc.

Inventor： Yangmin Ding ,  Yue Tian ,  Sarper Ozharar ,  Ting Wang

IPC: G08G1/04 ,  G01V1/00 ,  G01V1/22 ,  G01V1/30 ,  G08G1/01

CPC classification number: G08G1/04 ,  G01V1/001 ,  G01V1/226 ,  G01V1/30 ,  G08G1/0104

Abstract: Aspects of the present disclosure describe dynamic road traffic noise mapping using DFOS over a telecommunications network that enables mapping of road traffic-induced noise at any observer location. DFOS is used to obtain instant traffic data including vehicle speed, volume, and vehicle types, based on vibration and acoustic signal along the length of a sensing fiber along with location information. A sound pressure level at a point of interest is determined, and traffic data associated with such point is incorporated into a reference noise emission database and a wave propagation theory for total sound pressure level prediction and mapping. Real-time wind speed using DFOS—such as distributed acoustic sensing (DAS)—is obtained to provide sound pressure adjustment due to the wind speed.

公开(公告)号：US12092779B2

公开(公告)日：2024-09-17

申请号：US17589138

申请日：2022-01-31

Applicant: HALLIBURTON ENERGY SERVICES, INC.

Inventor： Kwang Il Suh ,  Neha Sahdev ,  Ira Bush

IPC: G01V1/22 ,  E21B47/008 ,  E21B47/113 ,  E21B47/117 ,  E21B47/135 ,  E21B49/00 ,  G01D5/353

CPC classification number: G01V1/226 ,  E21B47/008 ,  E21B47/114 ,  E21B47/117 ,  E21B47/135 ,  E21B49/00 ,  G01D5/35325 ,  G01D5/35329

Abstract: A method for distributed acoustic sensing includes sending a first optical pulse down an optical fiber, wherein light from the first optical pulse is backscattered from positions along a length of the optical fiber according to coherent Rayleigh scattering; splitting backscattered light from the first optical pulse into a first portion for a first interferometer and a second portion for a second interferometer, the first interferometer having a first gauge length and the second interferometer having a second gauge length, wherein the first gauge length is different from the second gauge length; detecting a first interferometric signal from the first interferometer responsive to the first portion of backscattered light; detecting a second interferometric signal from the first interferometer responsive to the second portion of backscattered light; and processing the first and second interferometric signals for two different sensing applications adapted for the first and second gauge lengths, respectively.

公开(公告)号：US12031857B2

公开(公告)日：2024-07-09

申请号：US17211429

申请日：2021-03-24

Applicant: Schlumberger Technology Corporation

Inventor： Takashi Mizuno ,  Joel Herve Le Calvez

IPC: G01V1/22 ,  G01H9/00 ,  G01V8/16

CPC classification number: G01H9/004 ,  G01V1/226 ,  G01V8/16

Abstract: Systems and methods may be used to reconstruct particle velocity wavefields from coupling-calibrated fiber-optic data that subsequently enables physically valid construction of the particle velocity wavefields for a hybrid sensor array including both fiber-optic and particle motion sensors. These systems and methods may be used in a variety of borehole geophysical applications, such as structure and reservoir imaging, impedance inversion, attenuation tomography, micro-seismic fracture imaging, focal mechanism analysis, and so on. The systems and methods may also be used in other applications such as geothermal and CO2 storage monitoring.

公开(公告)号：US20240192393A1

公开(公告)日：2024-06-13

申请号：US18532849

申请日：2023-12-07

Applicant: CHEVRON U.S.A. INC.

Inventor： Ivan Lim Chen Ning ,  Laura Catherine Swafford ,  Michael Eric Craven ,  Kevin John Davies

IPC: G01V1/36 ,  G01V1/30

CPC classification number: G01V1/362 ,  G01V1/307 ,  G01V1/226

Abstract: Systems and methods are provided for correcting distributed acoustic sensing (DAS) data. The system can receive a seismic dataset with a plurality of initial seismic phase picks and a plurality of traces, and cross-correlate each of the plurality of initial seismic phase picks using the plurality of traces as reference traces. Each initial seismic phase pick can receive a set of corrected phase picks. The system can calculate a probability density function for each set of corrected phase picks. The system can select a peak of each probability density functions as accurate seismic phase picks. These accurate seismic phase picks can be used for event location in the DAS data.

公开(公告)号：US20240125964A1

公开(公告)日：2024-04-18

申请号：US18046821

申请日：2022-10-14

Applicant: Saudi Arabian Oil Company

Inventor： Ali Aldawood ,  Mohammed Almarzoug

IPC: G01V1/46 ,  E21B47/12 ,  E21B49/00 ,  G01V1/22

CPC classification number: G01V1/46 ,  E21B47/12 ,  E21B49/003 ,  G01V1/226 ,  G01V2001/526

Abstract: A method includes drilling a wellbore into a subsurface using a drill bit and, for each of a plurality of depths of the drill bit in the wellbore, detecting, at each of a plurality of receiver stations located along a fiber optic cable disposed behind a casing string within the wellbore, a seismic signal created by the drill bit drilling the wellbore, sending an optical signal generated by the detection of the seismic signal from each of the plurality of receiver stations to an interrogator, sorting, using a computer processor, the optical signals by receiver station, and determining, using the computer processor, a seismic velocity using first breaks picked from the sorted optical signals.

公开(公告)号：US11906682B2

公开(公告)日：2024-02-20

申请号：US17608045

申请日：2019-06-11

Applicant: Halliburton Energy Services, Inc.

Inventor： Andreas Ellmauthaler ,  Simon Shaw ,  Michel Joseph LeBlanc ,  Mark Elliott Willis ,  Xiang Wu

IPC: G01V1/46 ,  G01V1/22 ,  G01V1/50 ,  G01V8/24 ,  G01V1/52

CPC classification number: G01V1/46 ,  G01V1/226 ,  G01V1/50 ,  G01V1/52 ,  G01V8/24 ,  G01V2210/6169 ,  G01V2210/72

Abstract: A wellbore system includes a logging unit having a retrievable logging cable coupled to a downhole tool within a wellbore and a depth correlation unit in the downhole tool that provides current depth data for the wellbore through the retrievable logging cable for recording of a current depth by the logging unit. The wellbore system also includes a distributed acoustic sensing unit that includes a seismic processing unit and a seismic profiling unit connected to a separate optical cable of the retrievable logging cable having distributed acoustic sensing channels, wherein an assignment of the distributed acoustic sensing channels along the separate optical cable is determined by an offset distance between the current depth of a formation reference region within the wellbore and a previous reference depth of the formation reference region within the wellbore. A distributed acoustic sensing method is also included.

公开(公告)号：US11852764B2

公开(公告)日：2023-12-26

申请号：US16522916

申请日：2019-07-26

Applicant: Triad National Security, LLC

Inventor： Allen D. Hayward

IPC: G01V1/16 ,  G01V1/28 ,  G01V1/00 ,  G01V1/18 ,  G08B5/22 ,  G01V1/22 ,  G01K1/02 ,  G01K13/00

CPC classification number: G01V1/164 ,  G01V1/008 ,  G01V1/181 ,  G01V1/28 ,  G01K1/02 ,  G01K13/00 ,  G01V1/226 ,  G01V2210/14 ,  G01V2210/72 ,  G08B5/22

Abstract: A seismic switch (SS) that is able to detect and signal when internal faults have occurred within the SS is described. The SS provides safety class functionality to the detection of seismic activity. For example, the SS may detect earthquakes above a specified level, resulting in the disconnection of electrical power to a radioactive waste storage facility, which could result in the ignition of waste materials should the storage facility and/or storage container fail during a seismic event. By reducing the risk of fire under these circumstances, the possibility of offsite releases is significantly reduced.

公开(公告)号：US11796696B2

公开(公告)日：2023-10-24

申请号：US17271850

申请日：2018-11-05

Applicant: Halliburton Energy Services, Inc.

Inventor： Zhao Zheng ,  Henry Clifford Bland

IPC: G01V1/50 ,  G01V1/22

CPC classification number: G01V1/226 ,  G01V1/50 ,  G01V2210/1234 ,  G01V2210/1299 ,  G01V2210/41 ,  G01V2210/646 ,  G01V2210/663

Abstract: The disclosure is directed to a method of utilizing an acoustic sensing cable, such as a fiber optic distributed acoustic sensing (DAS) cable, in a borehole to detect microseismic events and to generate three dimensional fracture plane parameters utilizing the detected events. Alternatively, the method can use various categorizations of microseismic data subsets to generate one or more potential fracture planes. Also disclosed is an apparatus utilizing a single acoustic sensing cable capable of detecting microseismic events and subsequently calculating fracture geometry parameters. Additionally disclosed is a system utilizing a processor to analyze collected microseismic data to generate one or more sets of fracture geometry parameters.

公开(公告)号：US11726221B2

公开(公告)日：2023-08-15

申请号：US17443057

申请日：2021-07-20

Applicant: Verizon Patent and Licensing Inc.

Inventor： Tiejun J. Xia ,  Glenn A. Wellbrock

IPC: G01N29/04 ,  G01V1/00 ,  G01N29/44 ,  G01V1/22 ,  G01V1/18

CPC classification number: G01V1/001 ,  G01N29/048 ,  G01N29/4454 ,  G01V1/18 ,  G01V1/226 ,  G01N2291/023 ,  G01V2210/60

Abstract: In some implementations, a system may receive a cable map for a deployed cable. The system may receive vibration data indicating a vibration associated with a first section of the cable. The system may determine a characteristic associated with the first section of the cable based on the vibration. The system may determine a location associated with the characteristic based on the cable map. The system may determine that the first section of the cable is associated with the location based on the location being associated with the characteristic. The system may associate the location and a length of a second section of the cable extending from an initial location to the location. The system may receive an input identifying the length of the second section of the cable and may output the location based on associating the location and the length of the second section of the cable.

公开(公告)号：US20180329099A1

公开(公告)日：2018-11-15

申请号：US15578586

申请日：2016-12-22

Applicant: Halliburton Energy Services, Inc.

Inventor： Cemal Erdimer ,  Mark Elliott Willis ,  Amit Padhi

IPC: G01V1/48 ,  G01V1/22 ,  G01H9/00

CPC classification number: G01V1/48 ,  G01H9/004 ,  G01V1/226 ,  G01V1/42 ,  G01V2210/161

Abstract: A method for processing distributed acoustic sensing (DAS) vertical seismic profiling (VSP) data is provided. The method includes operations to receive DAS data associated with an optical fiber's response to seismic energy applied by three seismic energy sources. The three seismic energy sources each configured to apply seismic energy to the optical fiber in a direction that is orthogonal to a direction of seismic energy applied by the other two seismic energy sources, the optical fiber is at least partially positioned within a wellbore, and the DAS data includes three components directed in an axial direction of the wellbore associated with energy application by the respective three seismic energy sources. The method further includes operations to apply reciprocity to the three components to model an equivalent vertical point force source in the wellbore with receivers configured to receive the three components at a location of the respective three seismic energy sources.