Field and laboratory study of polysaccharides in fracturing treatments
With the increased use of polysaccharides in fracturing treatments, subsequent problems have been encountered with inadequate polymer hydration, weak or over cross-linked fluid, formation of fish eyes, low viscosity and uncontrolled breakout. Problems have occurred due to inadvertent contamination from water supplies and fracturing tanks. In field studies of the Lost Hills and South Belridge areas in Kern County, California, field conditions and operational procedures were found to constitute critical factors in successful dispersion and in ideal cross-linking of polysaccharides. A comparison of field fluids with laboratory fluids was conducted with special emphasis on the quality of field water and on the effects of pH and temperature on the viscosity and sand fall rate. Laboratory tests indicate that fluid mixed in the field can exhibit a more effective cross-linking structure, a more stable viscosity strength and a lower sand fall rate if more control is exercised in the determination of pH range, in the selection of buffers and in the choice of treating water. Attention to these factors can reduce lost time, save expense, and increase well performance.
- OSTI ID:
- 5591766
- Report Number(s):
- CONF-8104238-
- Journal Information:
- Proc. Annu. Southwest. Pet. Short Course; (United States), Vol. 28; Conference: 28. annual southwestern petroleum short course, Lubbock, TX, USA, 23 Apr 1981
- Country of Publication:
- United States
- Language:
- English
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Mapping steam and water flow in petroleum reservoirs
ADVANCED RESERVOIR CHARACTERIZATION IN THE ANTELOPE SHALE TO ESTABLISH THE VIABILITY OF CO2 ENHANCED OIL RECOVERY IN CALIFORNIA'S MONTEREY FORMATION SILICEOUS SHALES
Related Subjects
FRACTURING FLUIDS
CHEMICAL PREPARATION
BENCH-SCALE EXPERIMENTS
BUFFERS
CALIFORNIA
CROSS-LINKING
FIELD TESTS
HYDRAULIC FRACTURING
OIL WELLS
PH VALUE
POLYSACCHARIDES
SAND
SEDIMENTATION
TEMPERATURE DEPENDENCE
VISCOSITY
WELL STIMULATION
CARBOHYDRATES
CHEMICAL REACTIONS
COMMINUTION
FEDERAL REGION IX
FLUIDS
FRACTURING
NORTH AMERICA
ORGANIC COMPOUNDS
POLYMERIZATION
SACCHARIDES
STIMULATION
SYNTHESIS
TESTING
USA
WELLS
020300* - Petroleum- Drilling & Production