×

Coupled downhole pump for simultaneous injection and production in an oil wheel

  • US 5,813,469 A
  • Filed: 03/12/1997
  • Issued: 09/29/1998
  • Est. Priority Date: 03/12/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. A coupled downhole pump comprising:

  • a driver pump;

    a production pump;

    coupling means for connecting the driver pump to the production pump; and

    a tubing string, the tubing string containing a pressurized injection fluid and being in fluid communication with the driver pump so that at least a portion of the pressurized injection fluid is used by the driver pump to create a driving motion which is transferred to the production pump by the coupling means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×