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. 18, 2025
Filed:
Dec. 15, 2023
Applicant:
Scientific Drilling International, Inc., Houston, TX (US);
Inventors:
Carsten Freyer, Wienhausen, DE;
Karsten Zeiske, Celle, DE;
Assignee:
Scientific Drilling International, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/024 (2006.01);
U.S. Cl.
CPC ...
E21B 47/024 (2013.01);
Abstract
A downhole alignment tool includes a guidance device, the guidance device having a center and a reference mark and a downhole sensor assembly, the downhole sensor assembly attached or positioned within the guidance device. The guidance device includes electronics, the electronics including an oscillator, an evaluation unit, and an output stage. A sensor detects a signal supplied to the evaluation unit for determining orientation of the reference mark relative to an object, such as another wellbore or casing.