Method and apparatus for removing debris from cased wells
Patent
·
OSTI ID:5268581
A method and apparatus are described for removing debris from fluid-filled wells, particularly oil and gas wells, prior to performing other operations in such wells. The apparatus consists of a positive action wiper junk catcher which is run on drill pipe or drill tubing. By the step of running the apparatus on tubular goods, a positive wiping action in addition to collection of the junk is possible. The junk catcher has a pair of wiper cups to remove clinging particles from the casing wall, and an annular junk accumulation space between an inner mud upflow member and an outer cage member. (7 claims)
- Assignee:
- Gulf Oil Corp.
- Patent Number(s):
- US 3500933
- OSTI ID:
- 5268581
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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03 NATURAL GAS
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42 ENGINEERING
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020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CLEANING
EQUIPMENT
NATURAL GAS WELLS
OIL WELLS
REMOVAL
SOLID WASTES
WASTES
WELL CASINGS
WELLS