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1. (CA2797495) SUBMERSIBLE PUMP HAVING A TWO-STEP CONTROL HYDRAULIC VALVE

Office : Canada
Application Number: 2797495 Application Date: 26.04.2010
Publication Number: 2797495 Publication Date: 11.11.2011
Publication Kind : A1
Prior PCT appl.: Application Number:US2010032389 ; Publication Number: Click to see the data
IPC:
E21B 43/12
E21B 43/16
F04B 43/10
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43
Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
12
Methods or apparatus for controlling the flow of the obtained fluid to or in wells
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43
Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
16
Enhanced recovery methods for obtaining hydrocarbons
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
43
Machines, pumps, or pumping installations having flexible working members
08
having tubular flexible members
10
Pumps having fluid drive
CPC:
F04B 43/073
Applicants: SMITH INTERNATIONAL, INC.
Inventors: STODDARD, KENNETH JOHN
Priority Data: 12/431,140 28.04.2009 US
Title: (EN) SUBMERSIBLE PUMP HAVING A TWO-STEP CONTROL HYDRAULIC VALVE
(FR) POMPE IMMERSIBLE AYANT UNE SOUPAPE HYDRAULIQUE A COMMANDE EN DEUX ETAPES
Abstract:
(EN) A submersible pump includes a pump valve configured to switch the pump between first and second states in which a piston is respectively extended and retracted. The pump valve includes first and second components that reciprocate between corresponding first and second positions. The pump is in the first state when both components are in their corresponding first position. The pump is in the second state when both components are in their corresponding second position. Neither the valve nor the pump is hydraulically locked at any time during normal operation.


Also published as:
AU2010245089ID2013/02180WO/2010/129225