| CPC E21B 47/13 (2020.05) [E21B 47/11 (2020.05)] | 16 Claims |
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1. A method for operating a multi-drift tool assembly, the method comprising:
releasing the multi-drift tool assembly into a wellbore that includes at least a first section and a second section, wherein the first section borders the second section from above the second section, wherein the first section is sized larger than the second section, and wherein the multi-drift tool assembly comprises at least one secondary drift tool housed inside a primary drift tool;
advancing the multi-drift tool assembly down the wellbore and inside the first section;
determining that the multi-drift tool assembly has stopped;
releasing the secondary drift tool from inside the primary drift tool using a motor located inside the multi-drift tool assembly;
surveying an inner circumference of the wellbore within the second section to identify potential uneven roundness of the wellbore beyond the first section by advancing the secondary drift tool down the wellbore and inside the second section while using a computer processor to process measurements obtained from said surveying; and
when the secondary drift tool has reached a desired depth, triggering, using the computer processor, a radio-frequency (RF) transceiver to transmit a signal to a user device at a ground anchoring station, wherein the signal includes data indicating that the inner circumference of the wellbore within the second section has been surveyed up to the desired depth, and data encoding the desired depth of the secondary drift tool inside the second section of the wellbore to the user device.
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