Title:
DOWNHOLE PUMP
Document Type and Number:
WIPO Patent Application WO2002068794
Kind Code:
A8
Abstract:
A method and apparatus for improving the performance of production-injection wells whereby a pump (35), driven by a hydraulic turbine (32) sharing the same central shaft (33, 34), is run and set in an oil-producing well. The oil enters the annulus of the well from the production zone and is induced into the pump to be forced to the wellhead; the injection water is forced down the wellbore to drive the turbine whereafter the injection water exhausts through the pump to be injected into the underlying aquifer thereby providing additional pressure support to the producing zone.
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Inventors:
SHARP ALLAN (GB)
Application Number:
PCT/EP2002/001214
Publication Date:
October 30, 2003
Filing Date:
February 05, 2002
Export Citation:
Assignee:
AXTECH LTD (GB)
SHARP ALLAN (GB)
SHARP ALLAN (GB)
International Classes:
E21B43/12; (IPC1-7): E21B43/12
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