Efficient High-Permeability Fracturing Offshore

Abstract

Offshore operators can more efficiently and effectively perform high-permeability and conventional hydraulic fracture treatments by blending treatment slurries under microprocessor control, adding undiluted acid on-the-fly, and altering sand concentrations and other slurry properties instantaneously. A two-skid system has been designed with these considerations in mind. The system, which can be shipped efficiently in 1S0 containers, has been tested on fluids up to 210-cp viscosity and can step or ramp sand concentrations up to a maximum of 20 lb/ gal. All additives, including acid treatments, are added on-thefly; leftover additives and acids may be stored for future jobs.The system may be applied in most conditions, including offshore wells requiring conventional orhigh-permeabil ity fracture treatments and certain land-based wells in remote areas where a compact skid is needed. Three significant benefits have resulted from using the compact-skid system: