US 11,913,290 B2
Downhole swivel apparatus and method
Kip M. Robichaux, Houma, LA (US); Kenneth G. Caillouet, Thibodaux, LA (US); and Terry P. Robichaux, Houma, LA (US)
Assigned to Mako Rentals, Inc., Shriever, LA (US)
Filed by Mako Rentals, Inc., Houma, LA (US)
Filed on Nov. 21, 2022, as Appl. No. 17/990,883.
Application 17/990,883 is a continuation of application No. 17/240,073, filed on Apr. 26, 2021, granted, now 11,506,000, issued on Nov. 22, 2022.
Application 17/240,073 is a continuation of application No. 16/983,488, filed on Aug. 3, 2020, granted, now 10,988,989, issued on Apr. 27, 2021.
Application 16/983,488 is a continuation of application No. 16/416,439, filed on May 20, 2019, granted, now 10,731,424, issued on Aug. 4, 2020.
Application 16/416,439 is a continuation of application No. 15/829,953, filed on Dec. 3, 2017, granted, now 10,294,732, issued on May 21, 2019.
Application 15/829,953 is a continuation of application No. 15/162,665, filed on May 24, 2016, granted, now 9,834,996, issued on Dec. 5, 2017.
Application 15/162,665 is a continuation of application No. 14/595,713, filed on Jan. 13, 2015, granted, now 9,347,283, issued on May 24, 2016.
Application 14/595,713 is a continuation of application No. 14/276,459, filed on May 13, 2014, granted, now 8,931,560, issued on Jan. 13, 2015.
Application 14/276,459 is a continuation of application No. 13/686,139, filed on Nov. 27, 2012, granted, now 8,720,577, issued on May 13, 2014.
Application 13/686,139 is a continuation of application No. 11/943,012, filed on Nov. 20, 2007, granted, now 8,316,945, issued on Nov. 27, 2012.
Application 11/943,012 is a continuation of application No. 11/284,425, filed on Nov. 18, 2005, granted, now 7,296,628, issued on Nov. 20, 2007.
Claims priority of provisional application 60/700,082, filed on Jul. 18, 2005.
Claims priority of provisional application 60/671,876, filed on Apr. 15, 2005.
Claims priority of provisional application 60/648,549, filed on Jan. 31, 2005.
Claims priority of provisional application 60/631,681, filed on Nov. 30, 2004.
Prior Publication US 2023/0151700 A1, May 18, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 7/12 (2006.01); E21B 17/01 (2006.01); E21B 17/05 (2006.01); E21B 21/00 (2006.01); E21B 33/038 (2006.01); E21B 33/06 (2006.01); E21B 33/064 (2006.01); E21B 33/08 (2006.01); E21B 41/00 (2006.01)
CPC E21B 17/05 (2013.01) [E21B 7/12 (2013.01); E21B 17/01 (2013.01); E21B 21/001 (2013.01); E21B 33/038 (2013.01); E21B 33/06 (2013.01); E21B 33/064 (2013.01); E21B 33/085 (2013.01); E21B 41/0007 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A swivel insertable into a drill or work string comprising:
(a) a mandrel having upper and lower end sections rotatable with upper and lower drill or work string sections, the mandrel including a longitudinal passage forming a continuation of a passage in the drill or work string sections;
(b) a sleeve being rotatably and reciprocably with respect to the mandrel;
(c) a plurality of packing units between upper and lower end portions of the mandrel and the sleeve, the plurality of packing units preventing leakage of fluid between the mandrel and the sleeve, at least one of the packing units in the plurality of packing units comprising a lubricating seal, wherein the plurality of packing units include a seal comprising metal filled teflon.