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Higher sand concentrations in East Texas

Conference · · Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:5690306
As more gas wells have been completed in E. Texas on 160-acre spacing, fracturing down casing has become more prevalent as the best way to stimulate these wells. Field trends have been toward higher sand concentrations. Most wells were fractured earlier through 2-7/8-in. tubing with maximum concentrations of 3 lb/gas 20-40 mesh sand. However, as wells were produced, it became evident that longer fractures and higher flow capacities were needed, The casing fracturing technique permitted higher pumping rates which allowed higher sand concentrations to be placed. These began to be placed at 4 and 5 lb/gal and have been placed successfully at concentrations in the 7 to 10 lb/gal range. Several jobs have been placed at 15 lb/gas. These higher sand concentrations as compared to a lower sand concentration in an equal predicted propped fracture length seem to be giving improved clean-up of fracture fluids and longer stabilized flow rates.
OSTI ID:
5690306
Report Number(s):
CONF-8205267-
Conference Information:
Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-10913
Country of Publication:
United States
Language:
English