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.

Date of Patent:
May. 15, 2018

Filed:

May. 31, 2016
Applicant:

Kersten Kraft, Celle, DE;

Inventor:

Kersten Kraft, Celle, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/00 (2006.01); G01V 3/10 (2006.01); G01V 3/08 (2006.01);
U.S. Cl.
CPC ...
G01V 3/10 (2013.01); G01V 3/08 (2013.01);
Abstract

An apparatus for measuring resistivity in a borehole includes first and second modules configured to be conveyed through the borehole and a transmitter connected to the first module, the transmitter transmitting a transmitter signal that causes a field signal to be created in a formation surrounding the borehole. The apparatus also includes a receiver connected to the second module configured to sense the field signal, a reflection generator and a delay determination circuit that includes a pulse generator and a timer. The apparatus also includes a communication link coupling the delay determination circuit and the reflection generator. The delay determination circuit causes a first pulse to be transmitted to the reflection generator and determines an indication that is related to the time until a reflection is received back from the reflection generator.


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