[12] Patent
[11] Patent No.:GC0009257  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/140757
Date of the Decision to Grant the Patent:03/Dec/2018

[21] Application No.:GC 2013-24639

[22] Filing Date:12/6/2013

[30] Priority:

[33] State [32] Priority date [31] Priority No.

[72] Inventor: Wesley N. LUDWUG

[73] Owner: Halliburton Energy Services, Inc., 10200 Bellaire Blvd., Houston, Texas, USA

[74] Agent: Saba & Co. T.M.P




Int. Cl.: E21B 23/14 (2006.01)

[56] Cited Documents:

-WO 2008-091157 A1 (WELLBORE SOLUTIONS AS et a!.) 31 July 2008
-US 2010-0187009 A1 (SIHER, JOACHIM eta!.) 29 July 2010
-US 2005-0034874 A1 (GUERRERO, JULIO C. eta!.) 17 February 2005
-US 7143843 B2 (DOERING, FALK W. et a!.) 05 December 2006
Examiner: Eng. Mohammed A. AlShamrani

[57] Abstract: The present disclosure describes implementations of a well tractor. In an example implementation, a well tractor includes a housing; a roller coupled to the housing; an electric motor coupled to the roller; and a variable ratio transmission coupled between the motor and the roller, the variable ratio transmission operable to drive the roller.
No. of claims: 19     No. of figures: 4


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