[12] Patent
[11] Patent No.:GC0011211  
[45] Date of Publishing the Grant of the Patent: 31/May /2020                70/2020  
Number of the Decision to Grant the Patent:2020/167619
Date of the Decision to Grant the Patent:26/May/2020

[21] Application No.:GC 2016-31942

[22] Filing Date:28/8/2016

[30] Priority:

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

[72] Inventor: FRASER, Scott

[73] Owner: Aramco Overseas Company B.V., Scheveningseweg 62-66 , Haag, 2517 KX Den , Netherlands

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




Int. Cl.: E21B 10/42, 7/15 (2006.01)

[56] Cited Documents:

-US 2012/012392 A1 (KUMAR SUNIL [DE]) 19 January 2012
-US 2013/032406 A1 (COMEAUX BLAINE c [US] ET AL) 7 February 2013
-US 2014/027178 A1 (JEFFRYES BENJAMIN p [GB] ET AL) 30 January 2014
-US 6 164 388 A (MARTUNOVICH ADAM ALBERT [RU] ET AL) 26 December 2000
-US 6 006 844 A (VAN PUYMBROECK LUC [US] ET AL) 28 December 1999
Examiner: Eng. Imad A. AlAhaidib

[57] Abstract: A rock formation drill bit assembly with electrodes includes a drill bit including a hollow portion that extends along a longitudinal axis of the drill bit. The hollow portion extends from a first end to a second end opposing the first end. Cutters as positioned on the first end. The cutters are configured to cut the rock formation resulting in a rock core protruding from the rock formation into the hollow portion. The rock core includes a circumferential surface. Multiple electrodes are positioned within an inner circumferential surface of the hollow portion. The multiple electrodes are configured to apply electrical discharge across multiple locations on the circumferential surface of the rock core. The electrical discharge causes the rock core to fracture.
No. of claims: 27     No. of figures: 7


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