Patent ID: 11939861
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 10:
11. A system for retrieving an imprint of a topmost surface of a fish located in a wellbore, the system comprising:
a lead-free pinscreen imprint device, comprising:
a housing comprising a central aperture that extends along a section of a central axis thereof,
a pinscreen portion disposed in the housing comprising:
a plurality of pins that are disposed along a vertical axis that is parallel to the central axis, each pin out of the plurality of pins comprising a top end and a bottom end and each pin out of the plurality of pins being configured to be independently shifted along the vertical axis upon identifying a pressure at the bottom end,
an imprint surface that faces in a downward direction, the imprint surface being a first plane formed by a plurality of bottom ends of the plurality of pins when the imprint surface is in a collecting position, and
a scanning surface that faces in an upward direction, the scanning surface being a second plane parallel to the first plane and formed by a plurality of top ends of the plurality of pins when the scanning surface is in the collecting position, and

a three-dimensional (3D) laser image scanner disposed in the housing at a location that is immediately above the pinscreen portion, the 3D laser image scanner being configured to scan the scanning surface and identify any depth changes in the scanning surface;

a conveyance mechanism configured to connect to an attachment of the housing, the conveyance mechanism being configured to move the lead-free pinscreen imprint device along the vertical axis; and
a control system that:
controls a release of the plurality of pins;
determines whether the lead-free pinscreen imprint device has reached the collecting position;
after the 3D laser image scanner performs a first scan of the scanning surface, determines whether a 3D image of the topmost surface of the fish can be generated based on the first scan only,
if the 3D image of the topmost surface of the fish can be generated based on the first scan only, generates the 3D image of the topmost surface of the fish;
if the 3D image of the topmost surface of the fish cannot be generated based on the first scan only, determines a number of subsequent scans to be collected; and
if the 3D image of the topmost surface of the fish cannot be generated based on the first scan only and after the 3D laser image scanner performs the number of subsequent scans, generates the 3D image of the topmost surface of the fish.