Concentric workover operations in deep sour wells
This work describes Exxon Co. Pensacola District's effort to reduce workover cost by the application of concentric workover operations to deep (15,500 + ft) sour wells. A medium duty workover rig, using a 1-1/4-in. work string and working through the production tubing, was employed to wash fill from the casing below tubing packers, to fish wireline tools from the tubing, to contact perforations in low permeability formation with acid, to squeeze cement zones producing breakthrough waterflood water, and to drill cement to open the casing for recompletion. Successful use of the concentric technique at deeper-than-usual depths and in a hostile sour environment provides the producer with a valuable tool for recovery of additional oil and gas at lower cost.
- OSTI ID:
- 5850175
- Report Number(s):
- CONF-790913-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE-8209; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Equipment selection reduces workover costs
Wireline workover: a cost-saving expense
Related Subjects
020300* -- Petroleum-- Drilling & Production
CEMENTING
DEPTH
DIMENSIONS
DRILLING RIGS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
MAINTENANCE
OIL WELLS
PERMEABILITY
PETROLEUM
RECOVERY
SOUR CRUDES
STIMULATION
SULFUR CONTENT
WATERFLOODING
WELL CASINGS
WELL COMPLETION
WELL SERVICING
WELL STIMULATION
WELLS