Repairing leaks in casings
Patent
·
OSTI ID:7180130
This patent describes a method for repairing a hole in a casing disposed in a wellbore. It comprises locating the hole in the casing; isolating the hole by defining a space within the casing in communication with the hole; introducing into the space a volume of a slurry of hydraulic cement in water; permitting the slurry to penetrate into the hole from the space; and maintaining the slurry in the hole for a time sufficient to enable the slurry to form a rigid plug of cement in the hole; wherein the slurry is comprised of a mixture of water and the hydraulic cement in the ratio of from about 0.5 to about 5.0 pounds of water per pound of cement.
- Assignee:
- Halliburton Services, Duncan, OK (United States)
- Patent Number(s):
- US 5123487; A
- Application Number:
- PPN: US 7-638859
- OSTI ID:
- 7180130
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300 -- Petroleum-- Drilling & Production
022000* -- Petroleum-- Transport
Handling
& Storage
42 ENGINEERING
420205 -- Engineering-- Transport & Storage Facilities-- (1980-)
CEMENTING
DISPERSIONS
DRILLING FLUIDS
FLUIDS
LEAKS
MAINTENANCE
MIXTURES
REPAIR
SLURRIES
SUSPENSIONS
WELL CASINGS
020300 -- Petroleum-- Drilling & Production
022000* -- Petroleum-- Transport
Handling
& Storage
42 ENGINEERING
420205 -- Engineering-- Transport & Storage Facilities-- (1980-)
CEMENTING
DISPERSIONS
DRILLING FLUIDS
FLUIDS
LEAKS
MAINTENANCE
MIXTURES
REPAIR
SLURRIES
SUSPENSIONS
WELL CASINGS