Non-rotating pitless adapter

Details Non-rotating pitless adapter Non-rotating pitless adapter

1995-11-28

1997-09-23

Neuder, William P.

Wells

Above ground apparatus

With assembly or disassembly means

E21B 4300

Patent

active

056694423

ABSTRACT:
A well construction includes a spool with a skirt that seats against a collar in a vertical well casing, the collar and skirt cooperating to limit the downwardly longitudinal movement of the spool within the casing. Both the skirt and collar form keyed surfaces each defined by a specific pattern of indentations and protrusions. The skirt and collar keyed surfaces are at least partially complementary so that, when the spool is in an operational position, the two surfaces intermesh and either eliminate or substantially reduce spool rotation within the well casing.

REFERENCES:
patent: 1889787 (1932-12-01), Minor
patent: 3154148 (1964-10-01), Peterson
patent: 3158201 (1964-11-01), Springer
patent: 4298065 (1981-11-01), Baski
patent: 4751968 (1988-06-01), Ames et al.
patent: 4940087 (1990-07-01), Lien et al.

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