Patent ID: 11867049
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E  G | IPC E

Claim 13:
14. A method, comprising:
inserting an untethered downhole tool into a wellbore that comprises a wellbore tubular at or near a terranean surface, the untethered downhole tool comprising:
a first body comprising a first housing that defines a first inner volume, and a first magnetic anchor coupled to the first body;
a second body comprising a second housing that defines a second inner volume, and a second magnetic anchor coupled to the second body to the wellbore tubular;
at least one logging sensor positioned in or on at least one of the first or second housings;
a motor attached to one of the first or second bodies and coupled to a spooler that includes a cable coupled to the spooler and attached to the other of the first or second bodies; and
at least one controller positioned in at least one of the first or second housings and communicably coupled to the motor and the first and second magnetic anchors;

adjusting, with the controller, one of the first or second magnetic anchors from an active state in which the one of the first or second magnetic anchors magnetically attaches the respective first or second body to the wellbore tubular to an inactive state to detach the respective first or second body from the wellbore tubular; and
activating, with the controller, the motor to operate the spooler to spool the cable from the spooler to increase a length of a portion of the cable between the spooler and the detached first or second body.