Improved methods and compositions for coating proppant particles with a hardenable resin composition, suspending the coated proppant particles in a fracturing fluid, and consolidating the proppant particles after being placed in fractures into permeable masses are provided. These methods and compositions are especially suitable for low temperature well, specifically those around the 60.degree. F. to 250.degree. F. ranges. Preferably, a liquid hardenable resin component is mixed with a liquid hardening agent component on-the-fly to form a hardenable resin composition. The hardenable resin composition is coated onto proppant particles on-the-fly that are conveyed from a source thereof to form resin-coated proppant particles in real-time. The resin-coated proppant particles are suspended in the fracturing fluid to be utilized down hole.
CROSS-REFERENCE TO RELATED APPLICATIONS
This Application is a Continuation-In-Part of U.S. application Ser. No. 10/041,142 filed on Jan. 8, 2002 now U.S. Pat. No. 6,668,926 and of U.S. application Ser. No. 10/163,185 filed on Jun. 4, 2002, now abandoned, and of U.S. application Ser. No. 10/183,200 filed on Jun. 26, 2002 U.S. Pat. No. 6,729,404 and of U.S. application Ser. No. 10/260,888 filed on Sep. 30, 2002 now U.S. Pat. No. 6,725,931.
Methods are provided that include a method comprising providing a treatment fluid comprising a base fluid and a gelling agent that comprises a diutan composition; providing a breaker that comprises an acid composition; allowing the breaker to interact with the treatment fluid; and allowing the viscosity of the treatment fluid to decrease. In some embodiments, the treatment fluid may comprise a base fluid, a gelling agent that comprises a diutan composition, and a breaker that comprises an acid composition. In some embodiments, the treatment fluid may be introduced into a portion of the subterranean formation at or above a pressure sufficient to create or enhance one or more fractures in the portion of the subterranean formation. Additional methods are also provided.
The present invention relates to proppants which can be used to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more proppants of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the proppants of the present invention are further disclosed, as well as methods of making the proppants.
The present invention relates to proppants which can be used to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more proppants of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the proppants of the present invention are further disclosed, as well as methods of making the proppants.
Methods of controlling particulate migration in a portion of a subterranean formation comprising placing a pre-flush fluid into the portion of the subterranean formation; and then, placing a low-viscosity adhesive substance diluted with an aqueous dissolvable solvent into the portion of the subterranean formation; wherein the portion of a subterranean formation being treated has a regain permeability of at least about 70%. Methods of creating a stabilized region around a portion of a subterranean formation around a well bore having a screen or liner in place in that portion of the subterranean formation comprising placing a pre-flush fluid into the portion of the subterranean formation; and then, placing a low-viscosity adhesive substance diluted with an aqueous dissolvable solvent into that portion of the subterranean formation; wherein the portion of a subterranean formation being treated has regain permeability of at least about 70%.
The present invention relates to methods for making proppants on-the-fly during subterranean treatment operations. Some embodiments of the present invention provide methods of preparing proppant on-the-fly comprising providing discrete amounts of a resin mixture that comprises a resinous material and a filler material; placing the discrete amounts of resin mixture into a well bore comprising a treatment fluid; and, allowing the discrete amounts of the resin mixture to substantially cure and form proppant particles while inside the treatment fluid. Other embodiments of the present invention provide methods of fracturing a portion of a subterranean formation using proppant prepared on-the-fly.
