Methods and means for casing, perforation and sand-screen evaluation using backscattered x-ray radiation in a wellbore environment

    公开(公告)号:US11041379B2

    公开(公告)日:2021-06-22

    申请号:US16716779

    申请日:2019-12-17

    摘要: An x-ray-based cased wellbore environment imaging tool is provided, the tool including at least an x-ray source; a radiation shield to define the output form of the produced x-rays; a direction controllable two-dimensional per-pixel collimated imaging detector array; sonde-dependent electronics; and a plurality of tool logic electronics and PSUs. A method of using an x-ray-based cased wellbore environment imaging tool to monitor and determine the integrity of materials within wellbore environments is also provided, the method including at least: producing x-rays in a shaped output; measuring the intensity of backscatter x-rays returning from materials surrounding the wellbore; controlling two-dimensional per-pixel collimated imaging detector arrays; and converting image data from said detectors into consolidated images of the wellbore materials.

    Methods and Means for Fracture Mapping in a Well Bore

    公开(公告)号:US20190101666A1

    公开(公告)日:2019-04-04

    申请号:US16193949

    申请日:2018-11-16

    IPC分类号: G01V5/12

    摘要: A borehole fracture evaluation tool for imaging radiation emitted by radioactive materials injected into the formation during hydraulic fracturing operations, the tool including at least one collimated imaging detector used to record x-ray backscatter images; sonde-dependent electronics; and a plurality of tool logic electronics and power supply units. A method for fracture evaluation imaging, the method including at least injecting radioactive tracer materials into the formation fractures; controlling the imaging direction of an imaging array detector; imaging the fracture structures; creating a composite image of the fractures versus the formation; and determining the size and position of the fractures.

    Methods and means for evaluating and monitoring formation creep and shale barriers using ionizing radiation

    公开(公告)号:US11035978B2

    公开(公告)日:2021-06-15

    申请号:US16403107

    申请日:2019-05-03

    IPC分类号: G01V5/00 G01V5/12 G01V5/04

    摘要: An x-ray-based reservoir evaluation tool for the measurement of the shale density anticipated at shale-creep barrier within a cased borehole is disclosed, wherein the tool includes an internal length comprising a sonde section, wherein the sonde section further includes an x-ray source; a plurality of radiation measuring detectors; sonde-dependent electronics; and a plurality of tool logic electronics and PSUs. A method of using an x-ray-based shale-seal evaluation tool for measuring the shale density anticipated at shale-creep barrier within a cased borehole is also disclosed, the method including: using x-rays to illuminate the formation surrounding the cased borehole; using detectors to directly measure the density of the formation; using detectors to directly measure the effects on the measurement from tool stand-off or production liner attenuation; and compensating for the production liner and liner-annular region when computing the saturated formation density within the production interval.

    Methods and means for casing, perforation and sand-screen evaluation using backscattered X-ray radiation in a wellbore environment

    公开(公告)号:US10605069B2

    公开(公告)日:2020-03-31

    申请号:US16386023

    申请日:2019-04-16

    摘要: An x-ray-based cased wellbore environment imaging tool is provided, the tool including at least an x-ray source; a radiation shield to define the output form of the produced x-rays; a direction controllable two-dimensional per-pixel collimated imaging detector array; sonde-dependent electronics; and a plurality of tool logic electronics and PSUs. A method of using an x-ray-based cased wellbore environment imaging tool to monitor and determine the integrity of materials within wellbore environments is also provided, the method including at least: producing x-rays in a shaped output; measuring the intensity of backscatter x-rays returning from materials surrounding the wellbore; controlling two-dimensional per-pixel collimated imaging detector arrays; and converting image data from said detectors into consolidated images of the wellbore materials.

    METHODS AND MEANS FOR CASING INTEGRITY EVALUATION USING BACKSCATTERED X-RAY RADIATION IN A WELLBORE ENVIRONMENT

    公开(公告)号:US20190085681A1

    公开(公告)日:2019-03-21

    申请号:US16165579

    申请日:2018-10-19

    IPC分类号: E21B47/00 G01N23/203

    摘要: An x-ray-based casing imaging tool, defined by a combination of source collimators, located cylindrically around an X-ray source and a rotatable two-dimensional per-pixel collimated imaging detector array, is provided, the tool including at least an x-ray source; a radiation shield to define the output form of produced x-rays; a direction controllable two-dimensional per-pixel collimated imaging detector array; an imaging window within the tool housing that reduces attenuation of x-rays passing through said tool housing; sonde-dependent electronics; and a plurality of tool logic electronics and PSUs. A method of using an x-ray-based casing imaging tool to determine the integrity of well casing or tubing is also provided, the method including at least: producing x-rays in a shaped output; measuring the intensity of backscatter x-rays returning from materials surrounding the wellbore; controlling two-dimensional per-pixel collimated imaging detector arrays; and converting image data from said detectors into consolidated images of the wellbore materials.