Patent ID: 11933169
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 8:
9. A coring tool, comprising:
an electronics section that includes a buoyant material that is buoyant in a wellbore fluid;
a coring section coupled to the electronics section and including:
a sidewall coring unit operable to penetrate an inner wall of a wellbore and thereby obtain a core sample; and
a stabilizer arm assembly operable to laterally extend a stabilizer arm into engagement with the inner wall of the wellbore;

a weight section operatively coupled to the electronics and coring sections and including an elongated weight that extends from a lower end of a lower one of the electronics and coring sections to define a stand-off distance between a bottom of the wellbore and the sidewall coring unit, wherein a weight of the elongated weight overcomes buoyancy forces generated by the buoyant material in the wellbore fluid; and
a release mechanism that releasably attaches the weight section to the electronics and coring sections, wherein activating the release mechanism detaches the weight section, thereby allowing the electronics and coring sections to float in the wellbore fluid and ascend the wellbore.