In some examples a method of well treatment may comprise: providing a treatment fluid comprising a microemulsified resin additive, wherein the microemulsified resin additive comprises a continuous phase and a discontinuous phase, wherein the continuous phase comprises an aqueous liquid, wherein the discontinuous phase is in form of micelles of about 200 nm or less in diameter and comprises a resin; introducing the treatment fluid into a subterranean formation penetrated by a wellbore; and allowing the treatment fluid to set in the subterranean formation.

Provided is a well-treatment fluid that reduces a load on the environment. A well-treatment fluid containing a non-ionic polyamino acid derivative including an -type or -type polyaspartic acid monomer unit represented by Formula (I) and an -type or -type polyaspartic acid monomer unit represented by Formula (II). ##STR00001##

Fracturing fluid compositions including a base fluid including a high TDS produced and/or flow back water, brackish water, RO reject water, clear brine, and mixtures thereof with or without added fresh water and systems, and methods for making and using same, where the method includes: (a) adding a first buffer to adjust the pH of a base fluid to an acidic pH, (b) adding a hydratable polymer or polymer slurry to the base fluid to form a hydratable polymer fracturing fluid, (c) adding a cross-linking composition to the hydratable polymer fracturing fluid to form a pre-cross-linked fracturing fluid, and (d) if needed, adding a second buffer to the pre-cross-linked fracturing fluid to adjust the pH of the pre-cross-linked fracturing fluid to form a viscosified fracturing fluid having a crosslinked structure.

A method of extracting underground natural resources through an ore chute located in a temperature region where temperature in the ground is not higher than 60 C., comprising introducing a dispersion solution obtained by dispersing polyoxaylate in water into the ore chute with pressure to hydrolyze the polyoxalate.

An aqueous fluid, possibly a wellbore fracturing fluid, comprises an aqueous solution or dispersion of a first polymer, which may be polysaccharide, as a thickener and a cross linking agent to enhance the viscosity of the fluid by crosslinking the first polymer, wherein the crosslinking agent is a second polymer comprising at least one polymer chain with phenyl boronate groups distributed along the polymer chain and the phenyl boronic acid groups have nitrogen attached to the phenyl group at a position which is meta relative to the boronate group.

A fracturing fluid viscosity-controlling agent maintains the high viscosity of the fracturing fluid during fracture formation in hydraulic fracturing and reduces the viscosity during recovery of the fracturing fluid. A fracturing fluid which includes the viscosity-controlling agent is provided as well as a crude oil or natural gas drilling method using the fracturing fluid with the viscosity-controlling agent. This viscosity-controlling agent contains polyalkylene oxide and a viscosity-reducing agent and is in the form of a tablet.

A process for forming a particle carrier system includes supplying a particle carrier, the particle carrier having a surface and modifying the particle carrier surface to include a first ionic functional group. The process also includes chemically binding the first ionic functional group on the particle carrier surface to a first ionic molecule.

Fibers are employed to improve proppant transport in low viscosity treatment fluids. The treatment fluids employ fibers to inhibit proppant settling without an unacceptable bridging tendency. The fibers are preferably crimped staple fibers having 1-10 crimps/cm of fiber length, a crimp angle between 45 and 160 degrees and a mean diameter between 8 and 40 microns.

The present invention relates to friction reducers and to well treatment fluids. In one embodiment there is provided a friction reducing composition comprising (a) a phosphonium compound and (b) a polymeric friction reducer. In a further embodiment there is provided a well treatment fluid comprising a phosphonium compound.

Methods for treatment fluids that include an acid source, a self-degradable particulate material, and a propping agent for use in subterranean treatments are provided. In one embodiment, the methods comprise providing a treatment fluid comprising a base fluid; an acid source; a self-degradable particulate material; and a propping agent; introducing the treatment fluid into a wellbore penetrating at least a first portion of a subterranean formation at or above a pressure sufficient to create or enhance one or more fractures in the subterranean formation; and allowing the self-degradable particulate material to divert at least a portion of the treatment fluid into a second portion of the subterranean formation.