Auto-fill sub

Details Auto-fill sub Auto-fill sub

1998-02-26

2000-05-09

Lillis, Eileen Dunn

Wells

Valves, closures or changeable restrictors

Fluid operated

166323, 166326, 1663321, E21B 2410

Patent

active

060590386

ABSTRACT:
Apparatus is provided which reliably and conveniently controls fluid flow through a sidewall of a tubular string. In a described embodiment, an auto-fill sub includes a check valve disposed in a housing. The check valve includes a generally tubular flexible member for sealingly engaging a sidewall of the housing to prevent fluid flow through an opening formed through the sidewall. A flow deflector may be provided to prevent abrasive wear, flow cutting and extrusion of the flexible member. Other features may include a lockout sleeve and a piston for displacing the lockout sleeve relative to the housing.

REFERENCES:
patent: 3997009 (1976-12-01), Fox
patent: 4361187 (1982-11-01), Luers
patent: 5228526 (1993-07-01), Vshivkov et al.
patent: 5355959 (1994-10-01), Walter et al.
patent: 5479986 (1996-01-01), Gano et al.
patent: 5649597 (1997-07-01), Ringgenberg
Vann Systems Technical Data Sheet for "Vann Circulating Vent (VCV)", undated.
Reference Manual for Well Testing dated 1989.
Halliburton Completion Products 2nd ed., dated 1997, title & back pages and p. 4-21.

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