Methods, systems, and compositions for the controlled crosslinking of well servicing fluids

摘要

Treating fluid compositions for use in hydrocarbon recovery operations from subterranean formations are described, as well as methods for their preparation and use. In particular, treating fluid compositions are described which comprise a liquid, a crosslinkable organic polymer material that is at least partially soluble in the liquid, a crosslinking agent that is capable of increasing the viscosity of the treating fluid by crosslinking the organic polymer material in the liquid, and a crosslinking modifier additive which can delay or accelerate the crosslinking of the treating fluid composition. Such compositions may be used in a variety of hydrocarbon recovery operations including fracturing operations, drilling operations, gravel packing operations, water control operations, and the like.

主权项

1. A method of treating a subterranean formation, the method comprising:
generating a treating fluid by mixing an aqueous base fluid and a crosslinking additive-and delivering the treating fluid into a subterranean formation; wherein the aqueous base fluid comprises a crosslinkable organic polymer, and wherein the crosslinking additive comprises a borate crosslinking agent premixed with one or more crosslinking modifiers selected from the group consisting of an acidic chemical.