Methods and Systems for Determining Subterranean Fracture Closure

    公开(公告)号:US20190249536A1

    公开(公告)日:2019-08-15

    申请号:US16391180

    申请日:2019-04-22

    IPC分类号: E21B43/267

    CPC分类号: E21B43/267

    摘要: Methods and systems for determining subterranean fracture closure are disclosed herein. The methods can include electrically energizing a casing of a wellbore that extends from a surface of the earth into a subterranean formation having a fracture that is at least partially filled with an electrically conductive proppant and measuring a first electric field response at the surface or in an adjacent wellbore at a first time interval to provide a first field measurement. The methods can also include measuring a second electric field response at the surface or in the adjacent wellbore at a second time interval to provide a second field measurement and determining an increase in closure pressure on the electrically conductive proppant from a difference between the first and second field measurements.

    Systems and methods for removal of electromagnetic dispersion and attenuation for imaging of proppant in an induced fracture
    13.
    发明授权
    Systems and methods for removal of electromagnetic dispersion and attenuation for imaging of proppant in an induced fracture 有权
    用于去除电磁分散的系统和方法以及在诱导断裂中支撑剂成像的衰减

    公开(公告)号:US09551210B2

    公开(公告)日:2017-01-24

    申请号:US14460715

    申请日:2014-08-15

    发明人: Lewis Bartel

    摘要: Systems and methods for generating a three-dimensional image of a proppant-filled hydraulically-induced fracture in a geologic formation are provided. The image may be generated by capturing electromagnetic fields generated or scattered by the proppant-filled fracture, removing dispersion and/or an attenuation effects from the captured electromagnetic fields, and generating the image based on the dispersion and/or attenuation corrected fields. Removing the dispersion and/or attenuation effects may include back propagating the captured electromagnetic fields in the time domain to a source location. The image may be generated based on locations at which the back propagated fields constructively interfere or may be generated based on a model of the fracture defined using the back propagated fields.

    摘要翻译: 提供了用于在地质层中产生支撑剂填充的水力诱发断裂的三维图像的系统和方法。 可以通过捕获由支撑剂填充的断裂产生或散射的电磁场来消除图像,从捕获的电磁场中去除色散和/或衰减效应,以及基于色散和/或衰减校正场产生图像。 去除色散和/或衰减效应可以包括将捕获的时域中的电磁场反向传播到源位置。 可以基于基于使用反向传播场定义的裂缝的模型而建立性地干扰或可以生成反向传播场的位置来生成图像。

    Methods and systems for determining subterranean fracture closure

    公开(公告)号:US10267134B2

    公开(公告)日:2019-04-23

    申请号:US14942304

    申请日:2015-11-16

    IPC分类号: E21B43/267

    摘要: Methods and systems for determining subterranean fracture closure are disclosed herein. The methods can include electrically energizing a casing of a wellbore that extends from a surface of the earth into a subterranean formation having a fracture that is at least partially filled with an electrically conductive proppant and measuring a first electric field response at the surface or in an adjacent wellbore at a first time interval to provide a first field measurement. The methods can also include measuring a second electric field response at the surface or in the adjacent wellbore at a second time interval to provide a second field measurement and determining an increase in closure pressure on the electrically conductive proppant from a difference between the first and second field measurements.

    Systems and methods for locating and imaging proppant in an induced fracture

    公开(公告)号:US10578762B2

    公开(公告)日:2020-03-03

    申请号:US15935787

    申请日:2018-03-26

    摘要: Born Scattering Inversion (BSI) systems and methods are disclosed. A BSI system may be incorporated in a well system for accessing natural gas, oil and geothermal reserves in a geologic formation beneath the surface of the Earth. The BSI system may be used to generate a three-dimensional image of a proppant-filled hydraulically-induced fracture in the geologic formation. The BSI system may include computing equipment and sensors for measuring electromagnetic fields in the vicinity of the fracture before and after the fracture is generated, adjusting the parameters of a first Born approximation model of a scattered component of the surface electromagnetic fields using the measured electromagnetic fields, and generating the image of the proppant-filled fracture using the adjusted parameters.

    SYSTEMS AND METHODS FOR REMOVAL OF ELECTROMAGNETIC DISPERSION AND ATTENUATION FOR IMAGING OF PROPPANT IN AN INDUCED FRACTURE
    20.
    发明申请
    SYSTEMS AND METHODS FOR REMOVAL OF ELECTROMAGNETIC DISPERSION AND ATTENUATION FOR IMAGING OF PROPPANT IN AN INDUCED FRACTURE 有权
    用于去除电磁散射和衰减的系统和方法,用于在诱导性碎片中成像

    公开(公告)号:US20160047933A1

    公开(公告)日:2016-02-18

    申请号:US14460715

    申请日:2014-08-15

    发明人: Lewis Bartel

    摘要: Systems and methods for generating a three-dimensional image of a proppant-filled hydraulically-induced fracture in a geologic formation are provided. The image may be generated by capturing electromagnetic fields generated or scattered by the proppant-filled fracture, removing dispersion and/or an attenuation effects from the captured electromagnetic fields, and generating the image based on the dispersion and/or attenuation corrected fields. Removing the dispersion and/or attenuation effects may include back propagating the captured electromagnetic fields in the time domain to a source location. The image may be generated based on locations at which the back propagated fields constructively interfere or may be generated based on a model of the fracture defined using the back propagated fields.

    摘要翻译: 提供了用于在地质层中产生支撑剂填充的水力诱发断裂的三维图像的系统和方法。 可以通过捕获由支撑剂填充的断裂产生或散射的电磁场来消除图像,从捕获的电磁场中去除色散和/或衰减效应,以及基于色散和/或衰减校正场产生图像。 去除色散和/或衰减效应可以包括将捕获的时域中的电磁场反向传播到源位置。 可以基于基于使用反向传播场定义的裂缝的模型而建立性地干扰或可以生成反向传播场的位置来生成图像。