Tool for cleaning or conditioning tubular structures such as wel

Details Tool for cleaning or conditioning tubular structures such as wel Tool for cleaning or conditioning tubular structures such as wel

1996-08-30

1998-10-13

Chin, Randall E.

Brushing, scrubbing, and general cleaning

Implements

1510416, 1510409, 1510405, 166173, E21B 3702

Patent

active

058193537

ABSTRACT:
A tool for the cleaning and conditioning of tubular structures, such as well casings, comprises a central mandrel (1) upon which are mounted a plurality of interchangeable sleeves (4-9). The sleeves at each end bear stabilization elements enabling the tool to be used in a well casing of any disposition and the intermediate sleeves bear conditioning or cleaning elements (12) angularly spaced apart and separated by fluid channels (13), the cleaning elements of adjacent sleeves being off-set to form a substantially helical pattern of cleaning elements and channels to ensure 360.degree. of coverage as a tool is axially displaced within a well casing. The sleeves are mounted in such a way that relative rotation between them and the mandrel is prevented by a combination of keyways and of drive faces between adjacent sleeves formed by cut-away portions.

REFERENCES:
patent: 555976 (1896-03-01), Secor
patent: 2248742 (1941-07-01), Burnham
patent: 3827492 (1974-08-01), Hammon et al.
patent: 4159742 (1979-07-01), Alexander, Jr.
patent: 4291764 (1981-09-01), Pampell

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