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:
Jun. 05, 2018

Filed:

Oct. 15, 2015
Applicants:

Ingo Forstner, Ahnsbeck, DE;

Christian Linke, Hannover, DE;

Inventors:

Ingo Forstner, Ahnsbeck, DE;

Christian Linke, Hannover, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 44/00 (2006.01); E21B 7/06 (2006.01); E21B 47/024 (2006.01); E21B 47/12 (2012.01); E21B 49/00 (2006.01); G05B 13/04 (2006.01);
U.S. Cl.
CPC ...
E21B 44/005 (2013.01); E21B 7/06 (2013.01); E21B 7/067 (2013.01); E21B 47/024 (2013.01); E21B 47/12 (2013.01); E21B 49/003 (2013.01); G05B 13/04 (2013.01);
Abstract

An embodiment of a method of drilling a secondary borehole from a primary borehole includes deploying a drilling assembly at a selected location in the primary borehole in an earth formation, and operating the drilling assembly and a drill bit to form an exit trough in a borehole wall. Operating includes controlling one or more operational parameters including at least a rate of lateral penetration of the drill bit into the formation as a function of time during formation of the exit trough based on at least one of a mathematical model and measurement data collected from one or more sensors, and in response to determining that the exit trough has exited the primary borehole, drilling the secondary borehole away from the primary borehole.


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