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Laboratory and Field Evaluation of a Combined Fluid-Loss-Control Additive and Gel Breaker for Fracturing Fluids

1990; Volume: 5; Issue: 03 Linguagem: Inglês

10.2118/18211-pa

2469-8520

L.A. Cantu, P. A. Boyd,

Oil and Gas Production Techniques

Summary More than 200% increase in fracture conductivity and permeability was obtained when a new degradable fluid-loss-control additive was used in place of silica flour (SF) in 40-lbm crosslinked hydroxypropyl-guar (HPG) fracturing-fluid systems. The new additive, an organic acid particulate (OAP), slowly degraded into water-soluble monomeric units at temperatures > 150°F after fracture stimulation experiments. The high-acid-content degradation product then acted as an excellent HPG gel breaker and effectively cleaned the proppant packs. As a fluid-loss-control additive, the measured wall-building coefficients were as good as, or better than, those of SF in crosslinked-gel, linear-gel, and N2-foam systems. This paper summarizes a 2-year study of the evaluation and application of this new product in fracturing-fluid systems.