公开(公告)号：US20210364668A1

公开(公告)日：2021-11-25

申请号：US16878261

申请日：2020-05-19

Applicant: Halliburton Energy Services, Inc.

Inventor： Wei Shao ,  Songhua Chen

IPC: G01V3/32 ,  G01R33/38 ,  G01R33/56 ,  G01R33/44 ,  G01R33/54

Abstract: Systems and methods of the present disclosure relate to processing nuclear magnetic resonance (NMR) data. An NMR downhole tool may include a housing, magnets disposed within the housing, an antenna extending along a circumference of the housing, and an information handling system configured to receive NMR signals via the antenna, wherein the NMR signals are based on an operating frequency, a static magnetic field B0, and a radio frequency (RF) field B1, which are defined by the antenna and the magnets. The information handling system may be further configured to project the NMR signals to a forward modeling space, and transmit vectors resulting from projecting the NMR signals to the forward modeling space.

公开(公告)号：US20210190989A1

公开(公告)日：2021-06-24

申请号：US16079977

申请日：2017-05-09

Applicant: Halliburton Energy Services, Inc.

Inventor： Yusheng Cheng ,  Songhua Chen ,  Magdalena Sandor ,  Wei Shao

IPC: G01V3/32 ,  G01R33/44 ,  G01V3/38 ,  E21B49/00

Abstract: A method for estimating a property of an earth formation is provided. At least one porosity dataset is received. The porosity dataset is analysed to determine pore-throat size distribution. A NMR measurements dataset is received from a NMR tool. The dataset is analyzed to determine a distribution of a first relaxation time versus a second relaxation time. Distribution of a ratio of the first relaxation time to the second relaxation time is determined by calculating a ratio between a geometric mean of the first relaxation and the second relaxation time. A threshold for the ratio of the first relaxation time to the second relaxation time is selected. The threshold indicates a value of the ratio corresponding to pore sizes not contributing to property of the formation. The property of the formation is determined using the determined threshold for the ratio of the first relaxation time to the second relaxation time.

公开(公告)号：US10961848B2

公开(公告)日：2021-03-30

申请号：US15753421

申请日：2017-09-29

Applicant: Halliburton Energy Services, Inc.

Inventor： Lilong Li ,  Songhua Chen ,  Arcady Reiderman

IPC: E21B49/00 ,  G01N24/08 ,  G01N3/32 ,  G01V3/32

Abstract: NMR tools are described having unidirectional magnetization throughout the magnet assembly. An antenna assembly is positioned around the magnet assembly in order to excite a volume in the surrounding subterranean formation. A layer of soft magnetic core material is positioned under the antenna assembly in order to shield all or most of the RF field generated by the RF antenna away from the conductive components inside the NMR tool. The conductive components may be conductive structural members or a conductive magnet assembly. The soft magnetic core material also shapes the static magnetic field by smoothing out the longitudinal magnetic field variation.

公开(公告)号：US20210063600A1

公开(公告)日：2021-03-04

申请号：US16320155

申请日：2018-02-26

Applicant: Halliburton Energy Services, Inc.

Inventor： Lilong Li ,  Songhua Chen ,  Mark Cheiron Butler

IPC: G01V3/32 ,  G01V3/38 ,  G01N24/08 ,  G01R33/44 ,  G01R33/561 ,  G01R33/56

Abstract: An electromagnet model or models are created to generate the static and radio frequency magnetic fields of an NMR down-hole logging tool. The magnetic field distributions are then used in spin dynamics (SD) simulations to model the impacts of various effects on NMR logging data, effects that cannot be accurately describe by theoretical formulation alone. The accuracy of the electromagnetic model and the SD simulation may be verified against experimental observations or trial logging runs. Simulation of electronic circuit, molecular diffusion, tool motion can all be incorporated in the SD simulation. The NMR data inversion process can be modified according to echoes obtained from SD simulation to obtain more accurate petrophysical parameters.

公开(公告)号：US20200333502A1

公开(公告)日：2020-10-22

申请号：US16388372

申请日：2019-04-18

Applicant: Halliburton Energy Services, Inc.

Inventor： Arcady Reiderman ,  Songhua Chen ,  Mark Cheiron Butler

IPC: G01V3/32 ,  G01V3/38 ,  G01V99/00

Abstract: Methods, devices, and systems for tracking lateral motion of a nuclear magnetic resonance (NMR) tool are disclosed. In some embodiments, a phase shift for one or more spin-echo signals received by the NMR tool is detected during a velocity measurement sequence that corresponds to at least one formation measurement sequence. A lateral velocity of the NMR tool is determined based, at least in part, on the detected phase shift.

公开(公告)号：US20200319369A1

公开(公告)日：2020-10-08

申请号：US16377469

申请日：2019-04-08

Applicant: Halliburton Energy Services, Inc.

Inventor： Wei Shao ,  Songhua Chen

IPC: G01V3/38 ,  G01V3/32

Abstract: A method includes generating a temperature-corrected nuclear magnetic resonance (NMR) measurement-derived value corresponding to a target temperature using at least one of a dimension-reduction operation or a parameter-correlation operation based on a difference between the target temperature and a sample temperature. The method also includes determining a formation property based on the temperature-corrected NMR measurement-derived value corresponding to the target temperature.

公开(公告)号：US10761157B2

公开(公告)日：2020-09-01

申请号：US15559825

申请日：2016-09-20

Applicant: Halliburton Energy Services, Inc.

Inventor： Songhua Chen ,  Donald Clifford Westacott

IPC: G01R33/30 ,  G01N24/08 ,  E21B25/08 ,  E21B47/00 ,  E21B49/02 ,  G01V3/14 ,  E21B25/00 ,  E21B49/06 ,  G01R33/44 ,  E21B49/08 ,  E21B10/02

Abstract: Pressure coring where the core apparatus drills the core sample and seals the core sample at its native downhole pressure (e.g., several thousand psi) may be expanded to include nuclear magnetic resonance (NMR) imaging components to produce a pressurized NMR core holder that allows for NMR imaging of the core samples having been maintained in a downhole fluid saturation state. NMR imaging performed may include 1H and also 19F imaging depending on the chamber fluid used in the pressurized NMR core holder.

公开(公告)号：US20200217192A1

公开(公告)日：2020-07-09

申请号：US15753421

申请日：2017-09-29

Applicant: Halliburton Energy Services, Inc.

Inventor： Lilong Li ,  Songhua Chen ,  Arcady Reiderman

IPC: E21B49/00 ,  G01N24/08 ,  G01V3/32

Abstract: NMR tools are described having unidirectional magnetization throughout the magnet assembly. An antenna assembly is positioned around the magnet assembly in order to excite a volume in the surrounding subterranean formation. A layer of soft magnetic core material is positioned under the antenna assembly in order to shield all or most of the RF field generated by the RF antenna away from the conductive components inside the NMR tool. The conductive components may be conductive structural members or a conductive magnet assembly. The soft magnetic core material also shapes the static magnetic field by smoothing out the longitudinal magnetic field variation.

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：US10197698B2

公开(公告)日：2019-02-05

申请号：US14455495

申请日：2014-08-08

Applicant: Halliburton Energy Services, Inc.

Inventor： Arcady Reiderman ,  Songhua Chen

IPC: G01V3/32 ,  G01N24/08 ,  G01R33/36 ,  G01R33/38

Abstract: In some aspects, a downhole nuclear magnetic resonance (NMR) tool includes a magnet assembly and an antenna assembly. The NMR tool can operate in a wellbore in a subterranean region to obtain NMR data from the subterranean region. The magnet assembly produces a magnetic field in a volume about the wellbore. The magnet assembly includes a central magnet, a first end piece magnet spaced apart from a first axial end of the central magnet, and a second end piece magnet spaced apart from a second axial end of the central magnet. The antenna assembly includes a transversal-dipole antenna. In some cases, orthogonal transversal-dipole antennas produce circular-polarized excitation in the volume about the wellbore, and acquire a response from the volume by quadrature coil detection.