Successful stimulation of the Olmos Formation using oil-base fluids and high-proppant concentrations
To date, in excess of 60 wells in the Olmos have been treated successfully using high sand concentrations and a new method for gelation of oil-base fluids. This method involves use of enough gelling agent to gel the hydrocarbon for the required surface viscosity and downhole stability, and also provide the needed amount of activator for surface conditions. The activator concentration can be varied to produce a base gel which is easily pumped and into which the propping agent can be easily mixed. As this base gel is being pumped downhole, additional activator is added to produce a gelled fluid needed for downhole conditions. Treatments in the Olmos have evolved up to 1,800,000 pounds (816,500 Kg) of 20/40 mesh Ottawa sand and 250,000 gallons (946 m/sup 3/) of gelled fluid. Jobs are pumped at 12 bbl/min (114 m/sup 3//sec) for up to 10 hours, averaging 12 lb of sand/gal of fluid (1400 Kg of sand/m/sup 3/ of fluid) with a maximum concentration of 17 lb of sand/gal of fluid (2000 Kg of sand/m/sup 3/ of fluid). The wells so treated have responded with more sustained production than wells treated with less temperature stable fluids containing lower concentrations of sand. Laboratory studies, treatment methods, completion and production data are presented.
- Research Organization:
- Halliburton Services
- OSTI ID:
- 5251635
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Vol. SPE13817
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FRACTURING FLUIDS
GELATION
PERFORMANCE
OIL WELLS
HYDRAULIC FRACTURING
TEXAS
OIL FIELDS
GELS
OILS
PROPPING AGENTS
QUANTITY RATIO
RESERVOIR ENGINEERING
SAND
TEMPERATURE EFFECTS
WELL COMPLETION
WELL STIMULATION
COLLOIDS
COMMINUTION
DISPERSIONS
ENGINEERING
FEDERAL REGION VI
FLUIDS
FRACTURING
GEOLOGIC DEPOSITS
MINERAL RESOURCES
NORTH AMERICA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM DEPOSITS
RESOURCES
STIMULATION
USA
WELLS
020300* - Petroleum- Drilling & Production