Methods of treating a subterranean formation include obtaining or providing compositions that include an alkenoate ester. The compositions also includes at least one of a dialkenyldihydrocarbylammonium halide and an N,N-dihydrocarbyl-substituted alkenamide. The methods also include placing the composition in a subterranean formation downhole. Methods of treating a subterranean formation include using a composition including a polymer that is a reaction product of a mixture including an alkenoate ester and at least one of a dialkenyldihydrocarbylammonium halide and an N,N-dihydrocarbyl-substituted alkenamide.

Compositions and a process for consolidating sand, proppant and other suspended particles present in a subterranean reservoir using an aqueous emulsion particle consolidation system. Surfactants with cloud points below the reservoir temperature are used to make a low viscosity aqueous external emulsion system with resin and curing agent as the internal phase. As the surfactant reaches its cloud point, it loses its emulsification ability and release the resin and curing agent to consolidate the sand. The aqueous phase of the system then functions as spacer to maintain the permeability needed for oil and gas production without additional post flush needed.

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.

A method of fracturing a subterranean formation penetrated by a well comprises: forming a fracturing composition comprising a carrier fluid; and a superabsorbent polymer component comprising one or more of the following: a first composite of a proppant and a first superabsorbent polymer in an unhydrated form, the first superabsorbent polymer being at least partially embedded in a void area of the proppant; a coated superabsorbent polymer; a superabsorbent material having a three-dimensional network; or a second composite of a second superabsorbent polymer and a slow-release breaker; and pumping the hydraulic fracturing composition into the subterranean formation to create or enlarge a fracture.

A well treatment fluid comprising an aqueous base fluid and polymer gelling agent is provided. The polymer gelling agent is selected from the group of basil seed gum, derivatives of basil seed gum, and combinations thereof. Also provided is a method of treating a well. In one embodiment, for example, the method is a method of fracturing a subterranean formation. In another embodiment, for example, the method is a method of forming a gravel pack in a well.

Methods of treating subterranean formations, and compositions, systems and methods for performing the methods. A method of treating a subterranean formation, including obtaining or providing a composition that includes an alkenoate ester. The composition also includes at least one of a dialkenyldihydrocarbylammonium halide and an N,Ndihydrocarbyl-substituted alkenamide. The method also includes placing the composition in a subterranean formation downhole. Methods of treating a subterranean formation using a composition including a polymer that is a reaction product of a mixture including an alkenoate ester and at least one of a dialkenyldihydrocarbylammonium halide and an N,N-dihydrocarbyl-substituted alkenamide.

A consolidation treatment method may include introducing a permeability modifier into a subterranean formation comprising zones of heterogeneous permeability; introducing a treatment fluid into the subterranean formation subsequent to the permeability modifier, wherein the permeability modifier at least partially diverts the treatment fluid in the subterranean formation such that treatment of the subterranean formation with the treatment fluid is more uniform, and wherein the permeability modifier has a higher viscosity than the treatment fluid; and consolidating one or more zones of the subterranean formation.

The invention relates to aviscosifier useful for oilfield fluids, especially high TDS fluids and heavy brines, comprising: at least a zwitterionic polymer, prepared by inverse emulsion polymerization of: monomers A comprising a betaine group; nonionic monomers B monomers C including a metal ion crosslinkable group with a molar ratio of the monomers A to the monomers B between 4/96 and 40/60; and at least a metal ion compound leading to the crosslinking of the groups carried by monomers C.

A method of treating a subterranean formation penetrated by a wellbore comprises introducing into the subterranean formation a treatment fluid comprising encapsulated particles having a core of a crosslinking agent and a shell of a chitosan encapsulant disposed on the core; releasing the crosslinking agent from the encapsulated particles with an acid; reacting the released crosslinking agent with the chitosan encapsulant or a derivative thereof forming a polymerized chitosan; and consolidating a plurality of particles in the subterranean formation with the polymerized chitosan.

Methods may include introducing a polymerizable composition containing a polycyclic monomer and a catalyst into a subterranean formation; and polymerizing the polymerizable composition in the presence of the catalyst in situ to form a polymer. Methods may also include lowering a wellbore tool into the subterranean formation, wherein the tool contains a first partition containing a polymerizable composition, and a second partition containing a catalyst; releasing the polymerizable composition from the first partition; releasing the catalyst from the second partition; contacting the polymerizable composition and the catalyst in a mixing region; and reacting the polymerizable composition and the catalyst in situ to form a polymer.