The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2021
Filed:
Jun. 13, 2019
Applicant:
China Petroleum & Chemical Corporation, Beijing, CN;
Inventors:
Assignee:
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 23/00 (2006.01); E21B 47/00 (2012.01); E21B 47/12 (2012.01); E21B 49/00 (2006.01); E21B 41/00 (2006.01);
U.S. Cl.
CPC ...
E21B 23/00 (2013.01); E21B 47/00 (2013.01); E21B 47/12 (2013.01); E21B 49/00 (2013.01); E21B 23/001 (2020.05); E21B 41/0085 (2013.01);
Abstract
An apparatus for traveling between an earth surface and a wellbore in an earth formation contains an instrument sub, a thruster for generating a motive force, and a power source that provides power to the instrument sub and the thruster. The instrument sub contains well logging instruments. The instrument sub, the thruster, and the power source are connected to form or are disposed in a substantially tubular body. The apparatus further contains a buoyance-generating device.