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.
Patent No.:
Date of Patent:
Sep. 10, 2024
Filed:
Oct. 06, 2023
Applicant:
Abaco Drilling Technologies Llc, Houston, TX (US);
Inventors:
Peter Thomas Cariveau, Houston, TX (US);
Timothy Mark Miller, Klein, TX (US);
Jing Lu, Houston, TX (US);
Assignee:
Abaco Drilling Technologies LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C 1/10 (2006.01); E21B 4/02 (2006.01); F04C 2/107 (2006.01); F04C 13/00 (2006.01);
U.S. Cl.
CPC ...
F01C 1/101 (2013.01); E21B 4/02 (2013.01); F04C 2/1075 (2013.01); F04C 13/008 (2013.01); F04C 2240/10 (2013.01); F04C 2250/30 (2013.01);
Abstract
Tapered stator designs are engineered in a positive displacement motor (PDM) power section to relieve stator stress concentrations at the lower (downhole) end of the power section in the presence of rotor tilt. A contoured stress relief is provided in the stator to compensate for rotor tilt, where the taper is preferably more aggressive at the lower end of the stator near the bit.