Abstract: Methods of treating a subterranean formation penetrated by a well bore, by providing a treatment fluid comprising non-homogeneous particulates including a degradable material and a hydrolysis catalyst; by introducing the treatment fluid into the well bore; and by creating a plug with the treatment fluid.

Abstract: A treatment fluid containing bio-fibers composed of fibrous structural protein, such as keratin, which demonstrates the ability for proppant transport, resistance to degradation in the presence of many degradants, and selective degradation to other degradants. Methods of using the treatment fluid include introducing the treatment fluid in a well bore and selectively degrading one or more of the treatment fluid components.

Abstract: A degradable composite composition including polyglycolic acid and a boron-containing accelerator, and methods of using the same (for example, as a constituent of a treatment fluid of a subterranean formation) are described. The degradable composite composition may be a composition that degrades in environments typically encountered downhole, such as oilfield environments/conditions and/or fluids.

Abstract: An in situ channelization method, treatment fluid and system for stagewise reduction of the treatment fluid viscosity. A method involves injecting a treatment fluid into a fracture, decrosslinking a polymer in a first viscosity reduction stage to trigger channelization of a first solid particulate in the fracture prior to closure, and completing a break of the polymer following fracture closure. A treatment fluid may include a carrier fluid, a first solid particulate, anchorants, a delayed decrosslinker, and a further delayed breaker. A system may include a pump system to fracture a formation with a treatment fluid, a carrier fluid which is a continuous aqueous gel phase comprising a polysaccharide crosslinked with a polyvalent cation or a borate anion, a first solid particulate, a hydrolyzable acid-forming precursor, an anchoring system and a shut-in system.

Abstract: The invention relates to the use of one or more water-soluble reactive liquid component capable of subsequent polymerization or cross-linking to form a solid to improve the zonal isolation and alleviate the impacts of cracks and fissures in the cement sheath around a completed subterranean well. It includes the steps of injecting a wellbore fluid carrying the reactive component or additive into the wellbore, injecting a cementitious composition as slurry into the wellbore and letting said reactive liquid component pass through at least one of the interfaces between cement and formation, cement and filter cake, and filter cake and formation before forming a solid of said reactive liquid component that traverses said at least one of the interfaces.