Title: Method for protection of well equipment from particles of debris

Abstract: Well equipment such as packers, check valves, gas lift valves, sliding sleeves, side pocket mandrels, retrievable plugs and the like located anywhere in a well are protected from particles of solid debris by forming a column of a protective liquid having a density of at least about 3.0 grams per milliliter in contact with and extending above the equipment. The protective liquid serves as a barrier to prevent particles of debris having a density less than that of the liquid from settling on or around the equipment and working their way into small clearances where they may cause operational and other problems.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Holland, Warren E. (Houston, TX, US)

Application Number: 800832
Filing Date: 1977-05-26
Publication_date: 1979-01-02
Assignee: Exxon Production Research Company (Houston, TX)
Primary Class(es): 166/371
Other Classes:
US Patent Ref:

1585969	May, 1926	Ferguson	175/70.
2043504	Jun, 1936	Blow	175/70.
2193144	Mar, 1940	Rymal	166/314.
2290431	Jul, 1942	Hoffman	166/314.
2643094	Jun, 1953	Peter	175/70.
2649915	Aug, 1953	Miller	166/121.
3014528	Dec, 1961	Hurley	166/244.
3126950	Mar, 1964	Carlberg et al.	166/244.
3246692	Apr, 1966	Metler et al.	166/244.
3399723	Sep, 1968	Stuart	166/315.
3878110	Apr, 1975	Miller et al.	166/314.

Other Refs:
Primary Examiner: Novosad, Stephen J.
Assistant Examiner: Suchfield, George A.
Attorney: Finkle; Y. S., Schneider; J. S.