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    LOW FREQUENCY DAS WELL INTERFERENCE EVALUATION
    2.
    发明申请
    LOW FREQUENCY DAS WELL INTERFERENCE EVALUATION 审中-公开

    公开(公告)号：US20190301276A1

    公开(公告)日：2019-10-03

    申请号：US16365173

    申请日：2019-03-26

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Ge JIN ,  Kyle R KRUEGER ,  Baishali ROY

    IPC: E21B47/10 ,  E21B47/06

    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

    LOW FREQUENCY DISTRIBUTED ACOUSTIC SENSING HYDRAULIC FRACTURE GEOMETRY
    6.
    发明申请
    LOW FREQUENCY DISTRIBUTED ACOUSTIC SENSING HYDRAULIC FRACTURE GEOMETRY 审中-公开

    公开(公告)号：US20190120047A1

    公开(公告)日：2019-04-25

    申请号：US16163115

    申请日：2018-10-17

    Applicant: ConocoPhillips Company

    Inventor： Ge JIN ,  Baishali ROY

    IPC: E21B49/00 ,  E21B43/26 ,  G01V1/22

    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. In this paper, we demonstrate some examples of using the low-frequency band of Distributed Acoustic Sensing (DAS) signal to constrain hydraulic fracture geometry. DAS data were acquired in both offset horizontal and vertical monitor wells. In horizontal wells, DAS data records formation strain perturbation due to fracture propagation. Events like fracture opening and closing, stress shadow creation and relaxation, ball seat and plug isolation can be clearly identified. In vertical wells, DAS response agrees well with co-located pressure and temperature gauges, and illuminates the vertical extent of hydraulic fractures. DAS data in the low-frequency band is a powerful attribute to monitor small strain and temperature perturbation in or near the monitor wells. With different fibered monitor well design, the far-field fracture length, height, width, and density can be accurately measured using cross-well DAS observations.

    TIME-LAPSE 4D SCATTERING FOR IMAGING HYDRAULICALLY INDUCED FRACTURES
    7.
    发明申请
    TIME-LAPSE 4D SCATTERING FOR IMAGING HYDRAULICALLY INDUCED FRACTURES 审中-公开
    用于成像液压诱发断裂的时间偏移4D散射

    公开(公告)号：US20140343859A1

    公开(公告)日：2014-11-20

    申请号：US14277314

    申请日：2014-05-14

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Mark Elliott WILLIS ,  Baishali ROY ,  Michael Paul DAVIDSON ,  Ali Can TURA

    IPC: G01V1/30

    CPC classification number: G01V1/308 ,  E21B43/26 ,  G01V1/306

    Abstract: Tools and methods for monitoring a subterranean formation is provided. Methods for monitoring include: creating a time-lapse azimuth stack between an azimuth stack on a first seismic survey and an azimuth stack on a second seismic survey; identifying a lowest root mean square energy and a highest root mean square energy for each time-lapse azimuth stack; and recording an azimuth with largest overall root mean square energy.

    Abstract translation: 提供了用于监测地层的工具和方法。 用于监测的方法包括：在第一次地震勘测的方位堆叠和第二次地震勘测的方位角叠层之间创建延时方位堆叠; 识别每个延时方位堆叠的最低均方根能量和最大均方根能量; 并记录具有最大总均方根能量的方位角。

    LOW FREQUENCY DAS WELL INTERFERENCE EVALUATION
    8.
    发明申请
    LOW FREQUENCY DAS WELL INTERFERENCE EVALUATION 有权

    公开(公告)号：US20220090490A1

    公开(公告)日：2022-03-24

    申请号：US17540305

    申请日：2021-12-02

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Ge JIN ,  Kyle R KRUEGER ,  Baishali ROY

    IPC: E21B47/107 ,  E21B47/06 ,  E21B47/07

    Abstract: Methods and systems for 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.

    PRODUCTION LOGGING INVERSION BASED ON DAS/DTS
    9.
    发明申请
    PRODUCTION LOGGING INVERSION BASED ON DAS/DTS 有权

    公开(公告)号：US20210238972A1

    公开(公告)日：2021-08-05

    申请号：US17236706

    申请日：2021-04-21

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Ge JIN ,  Kyle FRIEHAUF ,  Baishali ROY

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

    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.

    PRODUCTION LOGGING INVERSION BASED ON DAS/DTS
    10.
    发明申请
    PRODUCTION LOGGING INVERSION BASED ON DAS/DTS 审中-公开

    公开(公告)号：US20190338621A1

    公开(公告)日：2019-11-07

    申请号：US16401620

    申请日：2019-05-02

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Ge JIN ,  Kyle FRIEHAUF ,  Baishali ROY

    IPC: E21B41/00 ,  E21B47/06 ,  E21B47/10 ,  G01K1/02 ,  G01F1/66

    Abstract: A method of optimizing production of a hydrocarbon-containing reservoir by measuring low-frequency Distributed Acoustic Sensing (LFDAS) data in said 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 said 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 said well and other asset wells.

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