| CPC E21B 47/0025 (2020.05) [H04N 23/555 (2023.01)] | 14 Claims |
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1. A method of imaging a wellbore, comprising:
deploying a downhole imaging tool into the wellbore, the tool comprising:
an elongate pressure vessel;
illumination means;
an optical imaging sensor; and
a memory for storing images from the optical imaging sensor,
a telecentric lens optically coupled to the optical imaging sensor and optically directed outwards from the pressure vessel;
capturing images of the wellbore using the optical imaging sensor coupled to the telecentric lens; and
determining dimensions of a wellbore feature from a distance between pixels of that feature in the captured image.
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