Plunger lift system for well

Details Plunger lift system for well Plunger lift system for well

2011-06-07

2011-06-07

Thompson, Kenneth (Department: 3672)

Wells

With below and above ground modification

Eduction pump or plunger in well

C166S105000, C166S332800, C166S370000, C166S372000, C417S056000, C417S060000

Reexamination Certificate

active

07954545

ABSTRACT:
A plunger lift system has a bumper and a landing positioned in tubing below a safety valve of a well. A plunger moving between the bumper and landing lifts columns of liquid above the plunger when pushed by downhole pressure. A valve on the plunger's housing is movable between open and closed positions to either permit or prevent flow through the plunger. When the plunger engages the landing, a striker rod on the landing opens the valve permitting fluid communication through the plunger to a sales line at the surface. The valve is biased to the closed position to prevent fluid communication through the plunger. When the plunger is disengaged from the striker rod, the valve closes so that application of downhole pressure can again move the plunger uphole. A controller cycles the plunger between the bumper and the landing by controlling fluid flow in the well.

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Product Information Sheet; “FlowSafe(TM) WR Wireline-Retrievable Safety Valve;” BJ Services Company; Sep. 14, 2006; 1 page.
Product Information Sheet; “FlowSafe(TM) TR Tubing Retrievable Safety Valve;” BJ Services Company, Dec. 11, 2006; 2 pages.
Product Information Sheet; “Bottomhole Double-Bumper Springs;” Weatherford International Ltd.; 2006; 1 page.
Product Information Sheet; “Combination Plunger;” Weatherford International Ltd.; 2005; 1 page.
Product Information Catalog; “Safety Valves;” Weatherford International Ltd.; 2005; 24 pages.
Product Information Sheet; “T-Pad Plunger;” Weatherford International Ltd.; 2005; 1 page.
Product Information Sheet; “Spiral Plunger;” Weatherford International Ltd.; 2005; 1 page.
Product Information Sheet; “MP-1 Standing Valve;” Weatherford International Ltd.; 2005; 2 pages.
Product Information Sheet; “CEO(TM) Three Plunger-Lift Controller;” Weatherford International Ltd.; 2005; 2 pages.
Product Information Sheet; “Fixed-Brush Plunter;” Weatherford International Ltd.; 2005; 1 page.
Examination Report in counterpart Canadian Application No. 2,651,083, dated Mar. 12, 2010.
European Search Report for counterpart application No. EP 09 25 0200, dated Jan. 18, 2011.

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