[12] Patent
[11] Patent No.:GC0009431  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/141994
Date of the Decision to Grant the Patent:20/Dec/2018

[21] Application No.:GC 2014-27699

[22] Filing Date:7/8/2014

[30] Priority:

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

[72] Inventors:1- BEISEL, Joe A.،2- ROGOZINSKI, Nicolas

[73] Owner: HALLIBURTON ENERGY SERVICES, INC., 10200 Bellaire Boulevard, Texas 77072, Houston, USA

[74] Agent: Abu-Gazaleh Intellectual Property L.L.C




Int. Cl.: E21B 17/02, 17/042, 33/13 (2006.01)

[56] Cited Documents:

-US 2010-0101792 A1 (ROGERS et al.) 29 Apri1 2010
-US 4159132 A (HITZ, GIFFORD L.) 26 June 1979
-US 2012-0119490 A1 (BEARD et al.) 17 May 2012
-US 5441310 A (BARRETT et al.) 15 August 1995
-US 5152554 A (LAFLEUR et al.) 06 October 1992
Examiner: Eng. Mohammed A. AlShamrani

[57] Abstract: Disclosed is an improved coupling for cement heads. One exemplary cement head includes a first module comprising a first end, a first outer surface, and a plurality of first protrusions extending radially outward from the first outer surface, each of the plurality of first protrusions comprising a first profile in which (i) a first engagement surface faces axially away from the first end and (ii) a first support surface forms a first oblique angle relative to an axis; and a bridge configured to engage the plurality of first protrusions.
No. of claims: 15     No. of figures: 12


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