A method of producing a nanosilica-containing cement formulation, the method comprising the steps of mixing an amount of a determinant nanosilica particle and a functional coating; applying a dynamic initiator to trigger a reversible reaction of the functional coating to produce a reversible cage, where the reversible cage surrounds the determinant nanosilica particle to produce an encapsulated nanosilica; and mixing the encapsulated nanosilica and a cement formulation to produce the nanosilica-containing cement formulation

A fracturing fluid is provided including a mixture of an aqueous copolymer composition including a copolymer, the copolymer having acrylamide monomer units, or acrylic acid monomer units, or both, or salts thereof. The molar includes a crosslinker and a nanoclay.

A method includes adding a clay to water to form a suspension of clay in water, the clay including pieces of clay having an average diameter of at least 2 μm; adding a dispersant to the suspension of clay in water to form a drilling fluid; and injecting the drilling fluid into a well. In the drilling fluid, the dispersant interacts with the clay to form nanoscale particles of clay having an average diameter of less than 500 nm.

The present disclosure provides hydraulic fracturing treatment fluid compositions and systems, and methods of controlling proppant flowback and/or controlling sand production in a hydrocarbon-bearing formation using the hydraulic fracturing treatment fluid compositions and systems.

Pressure buildup can be extremely problematic during subterranean operations when there is no effective way to vent or otherwise access one or more sealed annuli within a wellbore. This condition can compromise casing integrity and ultimately lead to failure of a well. Methods for mitigating annular pressure buildup can comprise: providing a wellbore containing an annular space having one or more annuli therein; selecting a pressure-mitigating material based upon one or more conditions present within the annular space, the pressure-mitigating material having a negative coefficient of thermal expansion; introducing the pressure-mitigating material into the annular space of the wellbore; sealing at least a portion of the annular space after introducing the pressure-mitigating material thereto; and subjecting the pressure-mitigating material to a temperature increase in the sealed portion of the annular space to decrease a volume occupied therein by the pressure-mitigating material.

A system for mapping a fracture comprising: a fracture located within a subterranean formation; a proppant pack located within the fracture, wherein at least a portion of the proppant are coated with a curable resin system comprising a curable resin and an electrically-conductive, nano-sized material, and wherein the coated proppant is electrically conductive; a transmitter that sends an electrical signal into the proppant pack; and a receiver that receives the electrical signal from the proppant pack. A method of mapping at least a portion of a fracture comprising: introducing proppant into the fracture; coating at least a portion of the proppant with a curable resin system, wherein the curable resin system comprises: a curable resin; and an electrically-conductive, nano-sized material, wherein at least the portion of the proppant becomes electrically-conductive after the step of coating; and using the electrically-conductive proppant to map at least the portion of the fracture.

Various embodiments disclosed relate to crosslinkers for treatment of a subterranean formation and methods of using the same. In various embodiments, the present invention provides a method of treating a subterranean formation. The method includes placing in a subterranean formation a composition that includes polysaccharide viscosifier. The composition also includes a crosslinker including a silica bonded to at least one crosslinking group that includes at least one amine group including at least one of a boronic acid and an ester thereof.

The methods disclosed herein allow for the recovery of at least 55% of residual heavy oil from porous structures. In the disclosed methods, porous structures are contacted with emulsions having an aqueous continuous phase and an organic dispersed phase. The organic dispersed phase includes organic compounds having five or fewer carbon atoms (such as natural gas), which are typically difficult to emulsify because they are unstable at ambient conditions. To solve that problem, the emulsions disclosed herein are stabilized by nanoparticles having hydrophilic exterior surfaces. The nanoparticles make up at least 0.1% of the emulsion by weight. The use of hydrophilic nanoparticles as stabilizers combines the utility of natural gas liquids in enhanced oil recovery (due to their high solubility in residual oil and attendant viscosity reduction) with the utility of emulsions (delivery of viscosity-reducing agents along with an immiscible phase to push out the trapped oil).

A composition includes an aqueous colloidal dispersion of a nanomaterial. The nanomaterial includes, disposed on a surface of the nanomaterial, a first coupling agent including silane and a functional group including an amino acid. The nanomaterial includes, disposed on the surface of the nanomaterial, a second coupling agent including silane and a polymer with a molecular weight between 1,000 and 20,000.

This disclosure provides drilling fluids and additives as well as fracturing fluids and additives that contain cellulose nanofibers and/or cellulose nanocrystals. In some embodiments, hydrophobic nanocellulose is provided which can be incorporated into oil-based fluids and additives. These water-based or oil-based fluids and additives may further include lignosulfonates and other biomass-derived components. Also, these water-based or oil-based fluids and additives may further include enzymes. The drilling and fracturing fluids and additives described herein may be produced using the AVAP® process technology to produce a nanocellulose precursor, followed by low-energy refining to produce nanocellulose for incorporation into a variety of drilling and fracturing fluids and additives.