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    Production logging inversion based on LFDAS/DTS
    1.
    发明授权
    Production logging inversion based on LFDAS/DTS 有权

    公开(公告)号：US12291943B2

    公开(公告)日：2025-05-06

    申请号：US18297326

    申请日：2023-04-07

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Ge Jin ,  Kyle Friehauf ,  Baishali Roy

    IPC: E21B47/07 ,  E21B36/00 ,  E21B41/00 ,  E21B43/00 ,  E21B43/16 ,  E21B47/107 ,  G01F1/661 ,  G01K1/02

    Abstract: A method of optimizing production of a hydrocarbon-containing reservoir by measuring low-frequency Distributed Acoustic Sensing (LFDAS) data in the well during a time period of constant flow and during a time period of no flow and during a time period of perturbation of flow and simultaneously measuring Distributed Temperature Sensing (DTS) data from the well during a time period of constant flow and during a time period of no flow and during a time period of perturbation of flow. An initial model of reservoir flow is provided using the LFDAS and DTS data; the LFDAS and DTS data inverted using Markov chain Monte Carlo method to provide an optimized reservoir model, and that optimized profile utilized to manage hydrocarbon production from the well and other asset wells.

    SYSTEMS AND METHODS OF GENERATING HIGH RESOLUTION SEISMIC USING SUPER RESOLUTION INVERSION
    2.
    发明公开
    SYSTEMS AND METHODS OF GENERATING HIGH RESOLUTION SEISMIC USING SUPER RESOLUTION INVERSION 审中-公开

    公开(公告)号：US20240045091A1

    公开(公告)日：2024-02-08

    申请号：US18230815

    申请日：2023-08-07

    Applicant: ConocoPhillips Company

    Inventor： Chengbo Li ,  Baishali Roy ,  Charles C. Mosher

    IPC: G01V1/30

    CPC classification number: G01V1/302 ,  G01V2210/632 ,  G01V2210/665

    Abstract: Systems and methods for reservoir modeling include a super resolution seismic data conversion platform for converting input seismic data into high resolution output seismic data. The super resolution seismic data conversion platform can perform a super resolution inversion on the input seismic data by imposing sparsity and/or coherency assumptions on geophysical parameters represented by wavelet information of the input seismic data. For instance, a seismic trace interval can be determined, and both a reflection coefficient and an acoustic impedance of the seismic trace interval can be constrained. An optimization problem, using the constrained reflection coefficient and the constrained acoustic impedance, can be generated and/or solved by a sparse inversion. As such, a vertical resolution, as well as a seismic bandwidth, of super resolution output seismic data can be increased, improving subterranean feature (e.g., sand and/or shale characteristics) interpretation and well planning and construction.

    Low frequency distributed acoustic sensing hydraulic fracture geometry
    3.
    发明授权
    Low frequency distributed acoustic sensing hydraulic fracture geometry 有权

    公开(公告)号：US11352878B2

    公开(公告)日：2022-06-07

    申请号：US16163115

    申请日：2018-10-17

    Applicant: ConocoPhillips Company

    Inventor： Ge Jin ,  Baishali Roy

    IPC: E21B49/00 ,  E21B43/26 ,  G01V1/42 ,  E21B47/113 ,  G01V1/22 ,  G01V1/20

    Abstract: Monitoring and diagnosing completion during hydraulic fracturing operations provides insights into the fracture geometry, inter-well frac hits and connectivity. Conventional monitoring methods (microseismic, borehole gauges, tracers, etc.) can provide a range of information about the stimulated rock volume but may often be limited in detail or clouded by uncertainty. Utilization of DAS as a fracture monitoring tool is growing, however most of the applications have been limited to acoustic frequency bands of the DAS recorded signal. Low-frequency Distributed Acoustic Sensing (DAS) signal is used to constrain hydraulic fracture geometry. Events like fracture opening and closing, stress shadow creation and relaxation, ball seat and plug isolation can be clearly identified.

    Production logging inversion based on DAS/DTS
    6.
    发明授权
    Production logging inversion based on DAS/DTS 有权

    公开(公告)号：US11021934B2

    公开(公告)日：2021-06-01

    申请号：US16401620

    申请日：2019-05-02

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Ge Jin ,  Kyle Friehauf ,  Baishali Roy

    IPC: E21B41/00 ,  E21B47/07 ,  E21B47/107 ,  G01F1/66 ,  G01K1/02 ,  E21B43/16

    Abstract: A method of optimizing production of a hydrocarbon-containing reservoir by measuring low-frequency Distributed Acoustic Sensing (LFDAS) data in the well during a time period of constant flow and during a time period of no flow and during a time period of perturbation of flow and simultaneously measuring Distributed Temperature Sensing (DTS) data from the well during a time period of constant flow and during a time period of no flow and during a time period of perturbation of flow. An initial model of reservoir flow is provided using the LFDAS and DTS data; the LFDAS and DTS data inverted using Markov chain Monte Carlo method to provide an optimized reservoir model, and that optimized profile utilized to manage hydrocarbon production from the well and other asset wells.

    Measuring downhole temperature by combining DAS/DTS data
    7.
    发明授权
    Measuring downhole temperature by combining DAS/DTS data 有权

    公开(公告)号：US10370957B2

    公开(公告)日：2019-08-06

    申请号：US15453216

    申请日：2017-03-08

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Ge Jin ,  Herbert W. Swan ,  Baishali Roy ,  Kyle R. Krueger

    IPC: G01N21/47 ,  G01N25/00 ,  E21B47/06 ,  G01K11/32 ,  G01B11/16

    Abstract: This disclosure describes a method of combining DAS and DTS data to accurately estimate borehole temperature. The described method takes advantage of the thermal sensitivity of DAS signal in the low-frequency band, and combines with the absolute temperature measurement from DTS, to produce a distributed temperature estimation that is up to 10000 more accurate than the current commercial solution. The DAS and DTS data should be record simultaneously at the same well. The DAS data are first low-pass filtered and then converted into temperature variation measurement. Then an accurate temperature estimation is obtained by fitting both DTS and DAS data.

    Low frequency DAS well interference evaluation
    9.
    发明授权
    Low frequency DAS well interference evaluation 有权

    公开(公告)号：US11193367B2

    公开(公告)日：2021-12-07

    申请号：US16365173

    申请日：2019-03-26

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Ge Jin ,  Kyle R Krueger ,  Baishali Roy

    IPC: E21B47/107 ,  E21B47/06 ,  E21B47/07 ,  E21B43/26 ,  G01V1/42 ,  G01H9/00 ,  E21B47/135

    Abstract: A method of assessing cross-well interference and/or optimizing hydrocarbon production from a reservoir by obtaining low frequency DAS and DTS data and pressure data from a monitor well, when both the monitor and production well are shut-in, and then variably opening the production well for production, and detecting the temperature and pressure fluctuations that indication cross-well interference, and localizing the interference along the well length based on the low frequency DAS data. This information can be used to optimize well placement, completion plans, fracturing plans, and ultimately optimize production from a given reservoir.

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