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1. WO2002035057 - GAS DISPLACED CHAMBER LIFT SYSTEM WITH CLOSED LOOP/MULTI-STAGE VENTS

Publication Number WO/2002/035057
Publication Date 02.05.2002
International Application No. PCT/US2000/029305
International Filing Date 23.10.2000
Chapter 2 Demand Filed 09.05.2002
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
F04F 1/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
1Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
06the fluid medium acting on the surface of the liquid to be pumped
08specially adapted for raising liquids from great depths, e.g. in wells
CPC
E21B 43/122
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
122Gas lift
F04F 1/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED
1Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
06the fluid medium acting on the surface of the liquid to be pumped
08specially adapted for raising liquids from great depths, e.g. in wells
Applicants
  • VALENCE OPERATING COMPANY [US]/[US] (AllExceptUS)
  • AVERHOFF, Jon, R. [US]/[US] (UsOnly)
Inventors
  • AVERHOFF, Jon, R.
Agents
  • EGBERT, John, S.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) GAS DISPLACED CHAMBER LIFT SYSTEM WITH CLOSED LOOP/MULTI-STAGE VENTS
(FR) SYSTEME DE LEVAGE DE CHAMBRE PAR DEPLACEMENT DE GAZ EQUIPE D'EVENTS EN BOUCLE FERMEE/A ETAGES MULTIPLES
Abstract
(EN)
An artificial lift system for pumping fluid from a well using gas displacement. The system includes a pump (14, 24) with at least one chamber which is alternately allowed to fill with well fluid by venting gas from the chamber and passing a power gas into the chamber to displace the well fluid through a liquid string (18). The venting is through multi stage vents (21, 20) which allow a high pressure range to be vented directly to a third stage of a multi stage compressor (28, 37); and which allow a lower pressure range to vent to the wellbore (16), which is connected to the first stage (35) of the compressor (37).
(FR)
L'invention concerne un système artificiel de levage servant à pomper le fluide d'un puits par déplacement de gaz. Ce système comprend une pompe (14, 24) renfermant au moins une chambre pouvant être remplie de fluide issu du puits par dégazage de la chambre, suivi du transfert d'un gaz de combustion dans la chambre afin de déplacer le fluide du puits au moyen d'une tige (18) de liquide. Le dégazage s'effectue par l'intermédiaire d'évents (21, 20) à étages multiples permettant à une plage de haute pression d'être ventilée directement à un troisième étage d'un compresseur (28, 37) à étages multiples, et permettant à une plage de pression inférieure d'être ventilée au puits de forage (16), qui est connecté au premier étage (35) du compresseur (37).
Also published as
Latest bibliographic data on file with the International Bureau