METHODS AND MEANS FOR MEASURING MULTIPLE CASING WALL THICKNESSES USING X-RAY RADIATION IN A WELLBORE ENVIRONMENT
An x-ray-based cased wellbore simultaneous tubing and casing measurement tool is disclosed including at least an x-ray source; a radiation shield to define the output from of the produced x-rays; a two-dimensional per-pixel collimated imaging detector array; a secondary two-dimensional per-pixel collimated imaging detector array; a plurality of parallel hole collimators formatted such in one direction so as to form a pinhole in another direction; sonde-dependent electronics; and a plurality of tool logic electronics and PSUs. A method of using an x-ray-based cased wellbore simultaneous tubing and casing measurement tool is also disclosed, 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; determining the inner and outer diameters of tubing and casing from the backscatter x-rays; and converting image data from said detectors into consolidated images of the tubing and casing.
1 . An x-ray-based cased wellbore simultaneous tubing and casing measurement tool comprising a source collimator located cylindrically around an X-ray source with a plurality of collimated per-pixel collimated imaging detector arrays, wherein said collimators are formed as pinholes in the transverse direction and a parallel hole collimator sets in the axial direction, and said tool comprises:
an x-ray source;
a radiation shield to define the output from of the produced x-rays;
a two-dimensional per-pixel collimated imaging detector array;
a secondary two-dimensional per-pixel collimated imaging detector array;
a plurality of parallel hole collimators formatted such in one direction so as to form a pinhole in another direction;
sonde-dependent electronics; and
a plurality of tool logic electronics and PSUs.
2 . The tool of claim 1 , wherein said imaging detector further comprises two-dimensional per-pixel collimated imaging detector arrays wherein the imaging array is one pixel wide and multiple pixels long.
3 . The tool of claim 1 , wherein said imaging detectors comprise two sets of two-dimensional per-pixel collimated imaging detector arrays.
4 . The tool of claim 1 , wherein said imaging detectors comprise a plurality of two-dimensional per-pixel collimated imaging detector arrays.
5 . The tool of claim 1 , wherein said imaging detectors comprise a plurality of collimated scintillator-based detector arrays.
6 . The tool of claim 1 , wherein the images contain spectral information to inform the characteristics of any wellbore materials or debris.
7 . The tool of claim 1 , wherein said shield further comprises tungsten.
8 . The tool of claim 1 , wherein the tool is configured so as to permit through-wiring.
9 . The tool in claim 1 , wherein the tool would be combinable would other measurement tools comprising one or more of acoustic or ultrasonic.
10 . The tool in claim 1 , wherein the tool would be used to determine the inner diameter of a tubing or casing.
11 . The tool in claim 1 , wherein the tool would be used to deter nine the outer diameter of a tubing or casing.
12 . The tool in claim 1 , wherein the tool would be used to determine the distribution and inner diameter of a scale upon the inner diameter of a tubing or casing.
13 . The tool in claim 1 , wherein the tool would be used to determine the position, distribution and area of perforations, within the casings surrounding the cased wellbore.
14 . The tool in claim 1 , wherein the tool would be used to determine the position and integrity of sand-screens, within the casings surrounding the cased wellbore.
15 . The tool in claim 1 , wherein the tool would be used to determine the position and integrity of gravel-packs, within the casings surrounding the cased wellbore.
16 . The tool in claim 1 , wherein the tool would be used to determine the position and integrity of side-pocket mandrels, within the casings surrounding the cased wellbore.
17 . The tool in claim 1 , wherein machine learning is employed to automatically reformat or re-tesselate the resulting images as a function of depth and varying logging speeds or logging steps.
18 . A method of using an x-ray-based cased wellbore simultaneous tubing and casing measurement tool comprising a source collimator located cylindrically around an X-ray source with a plurality of collimated per-pixel collimated imaging detector arrays wherein said collimators are formed as pinholes in the transverse direction and a parallel hole collimator sets in the axial direction, said method comprising:
producing x-rays in a shaped output;
measuring the intensity of backscatter x-rays returning from materials surrounding the wellbore;
determining the inner and outer diameters of tubing and casing from the backscatter x-rays; and
converting image data from said detectors into consolidated images of the tubing and casing.
19 . The method of claim 18 , wherein said imaging detector comprises a two-dimensional per-pixel collimated imaging detector arrays wherein the imaging array is one pixel wide and multiple pixels long.
20 . The method of claim 18 , wherein said imaging detectors comprise a two sets of two-dimensional per-pixel collimated imaging detector arrays.
21 . The method of claim 18 , wherein said imaging detectors comprise a plurality of two-dimensional per-pixel collimated imaging detector arrays.
22 . The method of claim 18 , wherein the images contain spectral information to inform the characteristics of any wellbore materials or debris.
23 . The method of claim 18 , wherein the tool is combinable would other measurement methods comprising one or more of acoustic or ultrasonic.
24 . The method of claim 18 , wherein the tool would be used to determine the inner diameter of a tubing or casing.
25 . The method of claim 18 , wherein the tool is used to determine the outer diameter of a tubing or casing.
26 . The method of claim 18 , wherein the tool is used to determine the distribution and inner diameter of a scale upon the inner diameter of a tubing or casing.
27 . The method of claim 18 , wherein the tool is used to determine the position, distribution and area of perforations within the casings surrounding the cased wellbore.
28 . The method of claim 18 , wherein the tool would be used to determine the position and integrity of sand-screens, within the casings surrounding the cased wellbore.
29 . The method of claim 18 , wherein the tool would be used to determine the position and integrity of gravel-packs within the casings surrounding the cased wellbore.
30 . The method of claim 18 , wherein the tool would be used to determine the position and integrity of side-pocket mandrels, within the casings surrounding the cased wellbore.
31 . The method of claim 18 , wherein machine learning is employed to automatically reformat or re-tesselate the resulting images, as a function of depth and varying logging speeds or logging steps.