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Relation between chemistry and flow mechanics of borate-crosslinked fracturing fluids

Journal Article · · SPE Production and Facilities (Society of Petroleum Engineers); (United States)
DOI:https://doi.org/10.2118/25206-PA· OSTI ID:6125860
Borate-crosslinked guar or hydroxypropyl guar (HPG) polymer solutions have become increasingly popular as hydraulic fracturing fluids. These fluids are cheap and environmentally friendly, and they minimally impair a propped fracture while yielding maximum viscosity. The drawbacks, which have limited their use, are a restricted temperature range of applicability, relatively high tubing friction, and poor stability when prepared with seawater. This paper shows how these drawbacks can be eliminated by a fundamental understanding of the relation between fluid chemistry (as a function of borate crosslinker, pH, and polymer/crosslinker concentration) and its physical properties (proppant-carrying capacity, viscoelasticity, and the temperature stability of the resulting crosslinked structure).
OSTI ID:
6125860
Journal Information:
SPE Production and Facilities (Society of Petroleum Engineers); (United States), Journal Name: SPE Production and Facilities (Society of Petroleum Engineers); (United States) Vol. 8:3; ISSN 1064-668X; ISSN SPRFEZ
Country of Publication:
United States
Language:
English