Title:
PUMP CONTROL METHOD AND APPARATUS
Document Type and Number:
Japanese Patent JPS60156989
Kind Code:
A
Abstract:
A control process for a rotary pump which is immersed in a fluid produced by a well involves the use of a rotary pump driven by a variable speed motor and comprises the steps of acting upon the rotational speed of the motor according to a pressure difference which exists between the pressure of the fluid measured in the proximity of the pump and the production pressure of the well. The production pressure P of the well being given by the formula: P=PG-Q/Ip wherein PG is equal to the pressure of the unused deposit; that is, the pressure of the fluid deposit when the fluid deposit is at rest and there is no production of the well, Q equals the pump flow rate according to the motor rotation speed and Ip is equal to the well productivity indication. The apparatus for carrying out the process includes, in combination, a helicoid rotary pump and an electric motor driving the pump at a speed proportional to the frequency of the electric current fed to the motor and is provided with an arrangement for automatically adjusting the flow delivered by the pump. The adjusting arrangement includes at least one pressure sensor delivering a signal linked to the submergence level of the pump in service and a set of electric circuits for processing the measuring and control signal of the frequency of the current supplied to the motor according to the value of the measuring signal.
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Inventors:
ANRI SHIYORE
FURANSOWA JIYAN TOROKUEEMU
JIYAN GAROU
FURANSOWA JIYAN TOROKUEEMU
JIYAN GAROU
Application Number:
JP19141184A
Publication Date:
August 17, 1985
Filing Date:
September 12, 1984
Export Citation:
Assignee:
INST FRANCAIS DU PETROLE
ELF AQUITAINE
ELF AQUITAINE
International Classes:
E21B43/12; E21B47/00; F04B47/06; F04B49/20; F04C14/08; G05D16/20; F04C2/107; (IPC1-7): F04B47/06; F04B49/06; F04C2/107; F04C13/00; F04C15/02
Attorney, Agent or Firm:
Hideto Asamura
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