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Title:
【発明の名称】コリオリ式ポンプ・オフ状態制御装置
Document Type and Number:
Japanese Patent JP3184229
Kind Code:
B2
Abstract:
The operation of an oil well pumping unit control system (20, 200) is governed by a computerized automated control unit (88) that receives flow rate measurements from a Coriolis flow meter (28). The control unit causes production from a beam pumping unit (22) to cease when measurements from the Coriolis flow meter indicate a decline in the pump efficiency. The decline in pump efficiency indicates that a production fluid level (136) in the production tubing (108) has fallen below the uppermost point of travel for the plunger (122). Production from the well is, accordingly, shut-in to afford the reservoir sufficient time to build the pressure and corresponding fluid level that is required to recommence production operations.

Inventors:
Robert E. Dutton
Application Number:
JP53637097A
Publication Date:
July 09, 2001
Filing Date:
April 04, 1997
Export Citation:
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Assignee:
Micro Motion Incorporated
International Classes:
E21B43/12; F04B47/02; F04B49/06; F04B49/10; (IPC1-7): F04B49/06; E21B43/12
Domestic Patent References:
JP245692A
JP2500776A
Other References:
【文献】米国特許4859151(US,A)
Attorney, Agent or Firm:
Kazuo Shamoto (4 outside)



 
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