Daniel A Shaffer

US Patent:

8419390, Apr 16, 2013

Filed:

Dec 10, 2009

Appl. No.:

12/635191

Inventors:

Dan A. Merrill - Claremore OK, US
Daniel A. Shaffer - Talala OK, US
Dick L. Knox - Claremore OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

F04B 35/04
H02K 15/00
F16J 15/16

US Classification:

41742311, 4174233, 4174236

Abstract:

An electrical submersible pumping assembly having a seal section and a motor section, and seals that prevent leakage from the seal section and the motor section during assembly. The seals cooperate with a coupling assembly for coupling together shafts from both the seal section and motor section. The coupling assembly outer diameter enlarges at a shoulder that circumscribes its outer surface. In one example, the seal that prevents leakage from the seal assembly provides a sealing interface around the larger diameter portion of the coupling assembly, that is removable by sliding the coupling so its smaller diameter portion is adjacent the seal assembly. The motor section is sealed by another sealing assembly that includes a body that circumscribes the motor shaft to define an annulus, a sealing disk selectively fills the annulus. The sealing disk can also be slid away from within the body while coupling the shafts with the coupling assembly.

US Patent:

20160145984, May 26, 2016

Filed:

Nov 20, 2014

Appl. No.:

14/548945

Inventors:

- Houston TX, US
Lance T. Robinson - Tulsa OK, US
Kevin R. Bierig - Tulsa OK, US
Daniel A. Shaffer - Talala OK, US

International Classification:

E21B 43/12
F04D 29/12
F04D 13/08

Abstract:

A well fluid submersible pump assembly includes a pump operatively coupled to a motor and a seal section located between the motor and the pump. The seal section has a single piece tubular housing with adapters secured to opposite ends of the housing. A shaft extends axially through the housing for driving the pump. An auxiliary seal carrier located in the housing has a central bore through which the shaft extends and has an outer diameter portion that seals to the bore of the housing. Opposed check valves in the seal carrier allow lubricant to flow from one side of the auxiliary carrier to an opposite side of the seal carrier in response to a selected pressure differential. A mechanical face seal mounts to the auxiliary seal carrier and seals around the shaft.