Wellhead security apparatus

Details Wellhead security apparatus Wellhead security apparatus

1981-06-09

1983-09-20

Scanlan, Jr., Richard J.

Pipe joints or couplings

With lock or seal

285 45, 285373, 285419, 285423, 285DIG22, 70158, 70232, 137382, 292307B, F16L 5500, F16L 2100, F16L 2500

Patent

active

044051611

ABSTRACT:
Wellhead distribution valving (known in the trade as a Xmas tree) are protected from potential thieves by security apparatus that prevents access to the mounting flange bolts of the wellhead valving. This security apparatus comprises a housing having two similar half sections. Each half section includes an outer wall, a semi-annular top and a semi-annular bottom. A plurality of locking members are integrally attached to the outer wall at each half to mate with a locking receptacle attached to the inner surface of the outer wall of the mating half section. An inner core of a metallic material is incorporated into the outer wall, the top and the bottom to increase the difficulty of penetration through the surface housing.

REFERENCES:
patent: 754256 (1904-03-01), Sullivan
patent: 1028253 (1912-06-01), Murray
patent: 1084996 (1914-01-01), Wright
patent: 1903581 (1953-04-01), Turner
patent: 2798747 (1957-07-01), Auer
patent: 2889885 (1959-06-01), Hildebrandt
patent: 3077931 (1963-02-01), Shaffer et al.
patent: 3127198 (1964-03-01), Orund
patent: 3437149 (1969-04-01), Cugini et al.
patent: 3633947 (1972-01-01), Nelson
patent: 3752192 (1973-08-01), Kleppin
patent: 4300373 (1981-11-01), Camos et al.
patent: 4326740 (1982-04-01), Guiler
Advertisement for "Valveguard" by Seaboard Wellhead Control, Inc., Oil & Gas Journal, Dec. 1, 1981, p. 173.

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