Pumping system
AssigneePumptek Asia Ltd., Dba Pumptek, LLC
InventorsMitchell Crane, Anton Shakirov
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Abstract
Methods and systems for pumping a production fluid from a production zone to a collection point are described herein. The methods generally include disposing a tubing in the production zone of a wellbore; pumping the production fluid from the production zone through a first stage of a pumping system to achieve an inter-stage pressure sufficient for entry into a second stage; and pumping the production fluid at the inter-stage pressure through a second stage of the pumping system to achieve a lifting pressure sufficient to lift the production fluid to a collection point, wherein the second stage includes a jet pump.
Claims19
A method of pumping a production fluid from a production zone to a collection point comprising:
- disposing a tubing in the production zone of a wellbore;
- pumping the production fluid from the production zone through a first stage of a pumping system to achieve an inter-stage pressure sufficient for entry into a second stage;
- and
- pumping the production fluid at the inter-stage pressure through a second stage of the pumping system to achieve a lifting pressure sufficient to lift the production fluid to a collection point, the second stage comprises a jet pump and wherein the first stage pump is selected and operated so that a first stage dynamic head is at least 110% of the total dynamic head of the first stage pump absent the second stage.
A staged pumping system for producing a fluid from a subterranean geological formation, wherein the pumping system is disposed within a well via tubing and wherein the pumping system comprises:
- a centrifugal pump assembly comprising a motor section and a centrifugal pump section, wherein the centrifugal pump, in operation, transfers the production fluid from the subterranean geological formation;
- and
- a jet pump assembly comprising a nozzle, suction chamber and check valve disposed below the nozzle, wherein the jet pump assembly, in operation, receives the production fluid from the centrifugal pump assembly and lifts the production fluid to a collection point;
- and
- a single seat, wherein the seat, in operation secures the jet pump assembly thereon.
A staged pumping system for producing a fluid from a subterranean geological formation, wherein the pumping system is disposed within a well via tubing and wherein the pumping system comprises:
- a centrifugal pump assembly comprising a motor section and a centrifugal pump section, wherein the centrifugal pump, in operation, transfers the production fluid from the subterranean geological formation;
- and
- a jet pump assembly comprising a nozzle, suction chamber and check valve disposed below the nozzle, wherein the jet pump assembly, in operation, receives the production fluid from the centrifugal pump assembly and lifts the production fluid to a collection point;
- and wherein the centrifugal pump assembly is, in operation, controlled by a variable speed drive operated in current mode.
A staged pumping system for producing a fluid from a subterranean geological formation, wherein the pumping system is disposed within a well via tubing and wherein the pumping system comprises:
- a first stage pump assembly, wherein the first stage pump assembly, in operation, transfers the production fluid from the subterranean geological formation;
- and
- a jet pump assembly comprising a nozzle, suction chamber and check valve disposed below the nozzle, wherein the jet pump assembly, in operation, receives the production fluid from the centrifugal pump assembly and lifts the production fluid to a collection point;
- and
- a fallback preventer disposed above the jet pump assembly.
Dependencies are inferred from the claim text.