公开(公告)号：US11940586B2

公开(公告)日：2024-03-26

申请号：US17517234

申请日：2021-11-02

Applicant: Halliburton Energy Services, Inc.

Inventor： Jie Yang ,  Songhua Chen

IPC: G01V3/14 ,  E21B47/12 ,  G01P15/00 ,  G05B13/02

CPC classification number: G01V3/14 ,  E21B47/12 ,  G01P15/00 ,  G05B13/0265 ,  E21B2200/20

Abstract: Noise in drilling operation measurements can be eliminated or reduced using machine learning. For example, a system described herein can receive one or more measured signals in a logging-while-drilling process for drilling a wellbore. The system can determine a coupling factor for noise in the one or more measured signals. The system can generate a corrected signal by removing the noise multiplied by the coupling factor from the one or more measured signals. The system can output the corrected signal for use in drilling operations in the wellbore.

公开(公告)号：US11898976B2

公开(公告)日：2024-02-13

申请号：US16824014

申请日：2020-03-19

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Pavel Kortunov ,  Hubert E. King ,  Harry W. Deckman

IPC: G01N24/08 ,  G01V3/14 ,  G01V3/38 ,  G01R33/44 ,  G01R33/34

CPC classification number: G01N24/081 ,  G01R33/44 ,  G01V3/14 ,  G01V3/38 ,  G01R33/34092

Abstract: A method for determining the pore types of a core sample can include: determining a porosity of a core sample, wherein the core sample has a permeability of 10 mD or less; saturating the core sample with a NMR saturation fluid to achieve a saturated core sample; taking a NMR measurement of fluids in the saturated core sample; and deriving a volume for a pore type based on the porosity based on a correlation between the NMR measurement and a NMR signal to fluid volume calibration, wherein the pore type is selected from the group consisting of a nanopore, a micropore, a macropore, and any combination thereof.

公开(公告)号：US11726227B2

公开(公告)日：2023-08-15

申请号：US17843901

申请日：2022-06-17

Applicant: Terrasee Tech, LLC

Inventor： Philip Clegg

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

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

Abstract: A method for calculating a magnetic influence factor (MIF) between an atom and a resonant atom of a molecule of a material includes determining a current magnetic field strength at a test location above a quantity of material buried at the test location, transmitting a test signal from an antenna at the test location, the test signal comprising a test fundamental frequency, and detecting, at the test location, a reflected wave comprising the test fundamental frequency on the antenna. The method includes varying the test fundamental frequency while retransmitting the test signal and detecting a reflected wave until reflected waves of various test frequencies are detected and identifying from the detected reflected waves a resonant frequency corresponding to a maximum magnitude of the detected reflected waves. The material includes molecules with a resonant atom and at least one atom different than the resonant atom.

公开(公告)号：US20190219728A1

公开(公告)日：2019-07-18

申请号：US16361592

申请日：2019-03-22

Applicant: Halliburton Energy Services, Inc.

Inventor： Christopher M. Jones ,  Michael T. Pelletier ,  Robert S. Atkinson, JR. ,  Songhua Chen

IPC: G01V3/32 ,  G01R33/30 ,  G01N24/08 ,  G01N21/85 ,  B01L3/00 ,  G01N33/28 ,  E21B49/08 ,  G01V3/14

CPC classification number: G01V3/32 ,  B01L3/502715 ,  B01L2300/0654 ,  B01L2300/0816 ,  B01L2300/0864 ,  E21B49/081 ,  E21B2049/085 ,  G01N21/85 ,  G01N24/081 ,  G01N24/082 ,  G01N33/2823 ,  G01R33/302 ,  G01V3/14

Abstract: A method and microfluidic device to perform reservoir simulations using pressure-volume-temperature (“PVT”) analysis of wellbore fluids.

公开(公告)号：US20180224309A1

公开(公告)日：2018-08-09

申请号：US15749320

申请日：2016-08-16

Applicant: Gill Corporate Limited

Inventor： Robert Bacon ,  Samuel William Birtwell ,  Michael John Gill ,  Oliver Stewart Blacklock

IPC: G01F1/716 ,  G01R33/44

CPC classification number: G01F1/716 ,  G01N24/08 ,  G01R33/445 ,  G01R33/448 ,  G01R33/563 ,  G01V3/14

Abstract: A nuclear magnetic resonance flowmeter comprising at least one coil (40) of electrically conductive material through which an electrical current flows when the apparatus is in use. This generates a magnetic field in a region through which flows a fluid the flow of which is to be measured and throughout which there is a uniform weak magnetic field such as the Earth's magnetic field. Electrical circuitry (46 to 52) is connected to the said at least one coil (40) to switch on and abruptly switch off such an electrical current. There is an NMR sensor (42) connected to the electrical circuitry (46 to 52) to provide a measure of the decay in the NMR signal from nuclei within such fluid following the abrupt switching off of such an electrical current. A processor (52) of the electrical circuitry (46 to 52) is formed and/or programmed to provide a measure of the flow of such fluid from the said measure of the decay. Also, a method of measuring the flow of a fluid using such a flowmeter.

公开(公告)号：US20180188405A1

公开(公告)日：2018-07-05

申请号：US15796438

申请日：2017-10-27

Applicant: JILIN UNIVERSITY

Inventor： Tingting LIN ,  Yang ZHANG ,  Ying YANG ,  Hongyu WANG ,  Kun ZHOU ,  Ling WAN

IPC: G01V3/14 ,  G01R33/32

CPC classification number: G01V3/14 ,  G01N24/081 ,  G01R33/323 ,  G01R33/3415 ,  G01R33/3607 ,  G01R33/3614 ,  G01R33/3621 ,  G01R33/445

Abstract: Provided are a surface nuclear magnetic resonance system excited by a geoelectric field and a field working method for groundwater detection. A computer is connected to a synchronization module via a transmitter. The transmitter is connected to a first electrode and a second electrode via a transmission line. Receiving coils are symmetrically arranged on two sides of the transmission line. Each of the receivers is mounted with two receiving coils. The computer is connected to a fourth receiver via a first receiver, a second receiver, a third receiver, a sixth receiver and a fifth receiver, and the synchronization module is connected to the first receiver, the second receiver, the third receiver, the fourth receiver, the fifth receiver and the sixth receiver.

公开(公告)号：US10001578B2

公开(公告)日：2018-06-19

申请号：US14272325

申请日：2014-05-07

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Soumyajit Mandal ,  Van D. M. Koroleva ,  Troy Borneman ,  Martin D. Hürlimann

IPC: G01V3/00 ,  G01V3/14 ,  G01V3/32 ,  G01V3/38

CPC classification number: G01V3/14 ,  G01V3/32 ,  G01V3/38

Abstract: A method for applying a nuclear magnetic resonance (NMR) sequence is described herein. The method includes applying a series of refocusing pulses to a substance within an inhomogeneous static magnetic field. Each refocusing pulse in the series of refocusing pulses includes a central axis, a total pulse duration greater than t180, and at least five segments (e.g., 5, 7, 11, 20, and 21). The phase of each segment is substantially anti-symmetric about the central axis of the refocusing pulse. In a more particular embodiment, the phase of each segment is also symmetric about the central axis of the refocusing pulse and the five segments include a substantially constant amplitude.

公开(公告)号：US09939506B2

公开(公告)日：2018-04-10

申请号：US14406503

申请日：2013-05-24

Applicant: Schlumberger Technology Corporation

Inventor： Lalitha Venkataramanan ,  Fred K. Gruber ,  Tarek M. Habashy ,  Ridvan Akkurt ,  Badarinadh Vissapragada ,  Richard E. Lewis ,  Erik Rylander

IPC: G01R33/54 ,  G01V3/14 ,  G01V3/32 ,  G01V3/38 ,  G01N24/08 ,  G01R33/44

CPC classification number: G01R33/54 ,  G01N24/08 ,  G01N24/081 ,  G01R33/448 ,  G01V3/14 ,  G01V3/32 ,  G01V3/38

Abstract: A methods are provided for investigating a sample containing hydrocarbons by subjecting the sample to a nuclear magnetic resonance (NMR) sequence using NMR equipment, using the NMR equipment to detect signals from the sample in response to the NMR sequence, analyzing the signals to extract a distribution of relaxation times (or diffusions), and computing a value for a parameter of the sample as a function of at least one of the relaxation times (or diffusions), wherein the computing utilizes a correction factor that modifies the value for the parameter as a function of relaxation time for at least short relaxation times (or as a function of diffusion for at least large diffusion coefficients).

公开(公告)号：US09864031B2

公开(公告)日：2018-01-09

申请号：US14277794

申请日：2014-05-15

Applicant: Arcady Reiderman

Inventor： Arcady Reiderman

IPC: G01R33/44 ,  G01V3/14 ,  G01N24/08 ,  G01R33/34 ,  G01R33/38

CPC classification number: G01R33/448 ,  G01N24/081 ,  G01R33/34053 ,  G01R33/3808 ,  G01V3/14

Abstract: Nuclear magnetic resonance properties of a sample containing fast relaxation components are determined using direct detection of the longitudinal component of the nuclear magnetization. Excitation and detection can be performed in different frequency ranges, which enables short dead time of measurements. In some implementations a nuclear magnetic resonance apparatus can be configured for use in oil well logging.

公开(公告)号：US20170336524A1

公开(公告)日：2017-11-23

申请号：US15442430

申请日：2017-02-24

Applicant: JILIN UNIVERSITY

Inventor： Tingting LIN ,  Yang ZHANG ,  Xu SHU ,  Jun LIN ,  Ling WAN ,  Jing ZHAO ,  Xin CAI

IPC: G01V3/14 ,  G01R33/36

CPC classification number: G01V3/14 ,  G01N24/081 ,  G01R33/3614 ,  G01R33/3621 ,  Y02A90/344

Abstract: An anti-saturation device for a ground magnetic resonance signal amplifying circuit has a receiving coil connected with a band-pass filter circuit through a pre-amplifying circuit and a programmable amplifying circuit. The programmable amplifying circuit is connected with an AD acquisition card through the band-pass filter circuit. The band-pass filtering circuit is connected with a computer through the AD acquisition card, and the AD acquisition card is connected with an emitting system through the computer. An automatic amplification factor adjusting module is embedded into a nuclear magnetic resonance detector, and can also directly replace a receiving amplification circuit of the nuclear magnetic resonance detector to work independently.