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1. WO2001055552 - AN OIL PUMPING UNIT WITH A COUNTERWEIGHT WHOSE CENTROID CAN BE ADJUSTED

Publication Number WO/2001/055552
Publication Date 02.08.2001
International Application No. PCT/CN2001/000005
International Filing Date 03.01.2001
Chapter 2 Demand Filed 06.08.2001
IPC
E21B 43/12 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
12Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04B 47/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
47Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
02the driving mechanisms being situated at ground level
F04B 47/14 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
47Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
14Counterbalancing
CPC
E21B 43/127
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
43Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
12Methods or apparatus for controlling the flow of the obtained fluid to or in wells
121Lifting well fluids
126Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
127Adaptations of walking-beam pump systems
F04B 47/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
47Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
02the driving mechanisms being situated at ground level
F04B 47/14
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
47Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
14Counterbalancing
Applicants
  • WANG, Pucheng [CN]/[CN]
  • WANG, Jia [CN]/[CN] (UsOnly)
Inventors
  • WANG, Pucheng
  • WANG, Jia
Agents
  • SHANGHAI PATENT & TRADEMARK LAW OFFICE
Priority Data
00 1 01331.906.01.2000CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) AN OIL PUMPING UNIT WITH A COUNTERWEIGHT WHOSE CENTROID CAN BE ADJUSTED
(FR) UNITÉ DE POMPAGE À CENTRE DE MASSE DE CONTREPOIDS RÉGLABLE
Abstract
(EN)
This invention relates to an oil pumping unit with a counterweight whose centroid can be adjusted comprising: a power supply (1), a belt transmission mechanism (3), a speed reducer (4), a crank (5), a connecting rod (6), a cross beam (10), a curved walking beam (8), a horsehead (9), a cable hanger (11), a post (14), a base (2) and a counterweight (15), characterized that the centroid of the counterweight (15) can be adjusted. According to one preferred embodiment of the invention, the counterweight (15) comprises at least two linking bars (22) in the front of the counterweight (15). The centroid of the counterweight (15) can be easily adjusted by attached one of the linking bars (22) in the front of the counterweight to the different hooks (23.1) on the end of the curved walking beam (8).
(FR)
L'invention concerne une unité de pompage à centre de masse de contrepoids réglable comprenant un moteur (1), un mécanisme de transmission à courroie (3), un réducteur (4), un levier (5), une barre d'accouplement (6), une traverse (10), un balancier en coude (8), une tête de balancier (9), un câble de suspension (11), un support (14), une base (2) et un contrepoids (15). Cette unité de pompage est caractérisée en ce que le centre de masse du contrepoids (15) peut être réglé. Selon un mode de réalisation, la partie avant du contrepoids (15) comprend au moins deux axes de traction (22). Grâce à la suspension d'un des axes de traction du contrepoids (15) au-dessus de différents éléments d'accrochage (23.1) fixés sur l'extrémité du balancier en coude (8), il est aisé de régler le centre de masse du contrepoids.
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