Apparatus and method for sealing perforated well casing
- Wasilla, AK
- Albuquerque, NM
- Los Lunas, NM
- Anchorage, AK
Perforations and other openings in well casings, liners and other conduits may be substantially blocked or sealed to prevent fluid flow between the casing or liner interior and an earth formation by placing a radially expansible sleeve adjacent the perforations or openings and urging the sleeve into forcible engagement with the casing or inner wall using an explosive charge. An apparatus including a radially contracted sleeve formed by a coiled plate member or a tubular member having flutes defined by external and internal folds, may be deployed into a well casing or liner through a production or injection tubing string and on the end of a flexible cable or coilable tubing. An explosive charge disposed on the apparatus and within the sleeve may be detonated to urge the sleeve into forcible engagement with the casing inner wall.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- DOE Contract Number:
- AC04-94AL85000
- Assignee:
- Atlantic Richfield Company (Los Angeles, CA)
- Patent Number(s):
- US 5613557
- OSTI ID:
- 870879
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
method
sealing
perforated
casing
perforations
openings
casings
liners
conduits
substantially
blocked
sealed
prevent
fluid
flow
liner
interior
earth
formation
placing
radially
expansible
sleeve
adjacent
urging
forcible
engagement
inner
wall
explosive
charge
including
contracted
formed
coiled
plate
tubular
flutes
defined
external
internal
folds
deployed
production
injection
tubing
string
flexible
cable
coilable
disposed
detonated
urge
earth formation
inner wall
fluid flow
explosive charge
apparatus including
tubing string
prevent fluid
flexible cable
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