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US3605887A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for selectively producing and testing fluids from a multiple zone well

Assignee: Shell USA Inc
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Filing: 1970-05-21
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Granted: 1971-09-20
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Expires: 1990-05-21
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Abstract

Abstract APPARATUS FOR SELECTIVELY PRODUCING AND TESTING FLUIDS FROM A MULTIPLE ZONE WELL INCLUDING A PACKER SEALING OFF ONE OF THE ZONES ANOTHER AND A TUBING STRING IN FLUID COMMUNICATION WITH THE LOWER ZONE. A LOWER ZONE CROSS-OVER IS DISPOSED ABOVE THE PACKER IN FLUID COMMUNICATION WITH THE TUBING STRING FOR DIVERTING FLUIDS FROM THE LOWER ZONE AND INTO THE ANNULUS BETWEEN THE TUBING STRING AND THE WELL. AN UPPER ZONE FLUID INLET IS IN FLUID COMMINICATION WITH THE TUBING STRING ABOVE THE LOWER ZONE CROSS-OVER. A PUMP EXTENSION IS SELECTIVELY MOVABLE IN THE TUBING STRING BETWEEN A POSITION SEALING OFF THE TUBING STRING AT ONE POINT ABOVE THE LOWER ZONE CROSS-OVER AND BELOW THE UPPER ZONE FLUID INLET AND AT ANOTHER POINT BELOW BOTH THE LOWER ZONE CROSSOVER AND THE UPPER ZONE FLUID INLET. THE PUMP EXTENSION INCLUDES A FIRST NORMALLY OPEN FLUID INLET FOR REMOVING FLUIDS FROM BOTH OF THE ZONES AND A SECOND NORMALLY CLOSED FLUID INLET FOR REMOVING FLUIDS FROM THE LOWER ZONE.

Inventors

  • 👤 Darryl A Lambie

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 20:49
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/14; E21B43/12; E21B43/121; E21B43/126; E21B43/127

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-19 1975-03-21 1975-09-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-19 1979-03-21 1979-09-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-19 1983-03-21 1983-09-20 $7700.00 Window Closed / Lapsed

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