Saudi Arabian Oil Company

Alfaisal University

Mohan Raj Krishnan

Edreese Alsharaeh

Ayman Mohammed Almohsin

Wengang Li

Mohieddin Alghazali

Bader Ghazi Alharbi

Feven Mattews Michael

Edreese Alshaerah

Methods and fracturing fluids for fracturing a subterranean formation using in situ proppant particulates. Methods include introducing a fracturing fluid into a subterranean formation at or above a fracture gradient. The fracturing fluid includes a non-phase-transition fluid comprising at least an aqueous fluid and a surfactant; and a phase-transition fluid comprising a phase-change material selected from the group consisting of styrene monomers, methyl methacrylate monomers, or a combination of styrene monomers and methyl methacrylate monomers, an initiator, and an optional accelerator.

In situ polymer proppant particulates and methods for use thereof

Polyacrylamide (PAM)-coated nanosand that may be a relative permeability modifier (RPM) and that is applied to treat a wellbore in a subterranean formation. The treatment may be for excess water production. The PAM-coated nanosand is PAM-hydrogel-coated nanosand. The PAM-coated nanosand os nanosand coated with PAM hydrogel. The PAM hydrogel includes crosslinked PAM in water. Application of the PAM-coated nanosand may reduce water production from the subterranean formation into the wellbore. The PAM hydrogel of the PAM-coated nanosand may expand in a water zone of the subterranean formation to restrict water flow into the wellbore. The PAM hydrogel of the PAM-coated nanosand may contract in an oil zone of the subterranean formation so not to significantly restrict crude oil flow into the wellbore.

Coated nanosand as relative permeability modifier

Coated proppants include a proppant particle, a surface copolymer layer surrounding the proppant particle, and a resin layer surrounding the surface copolymer layer. The surface copolymer layer includes a copolymer of at least two monomers chosen from styrene, methyl methacrylate, ethylene, propylene, butylene, imides, urethanes, sulfones, carbonates, and acrylamides, where the copolymer is crosslinked by divinyl benzene. The resin layer includes a cured resin. Methods of preparing the coated proppants include preparing a first mixture including at least one polymerizable material, an initiator, and a crosslinker including divinyl benzene; contacting the first mixture to a proppant particle to form a polymerization mixture; heating the polymerization mixture to cure the polymerizable material and form a polymer-coated particulate; preparing a second mixture including the polymer-coated substrate, an uncured resin, and a solvent; and adding a curing agent to the second mixture to cure the uncured resin and form the coated proppant.

Coated proppants and methods of making and use thereof

A coated proppant having a proppant particle, an intermediate cross-linked terpolymer layer encapsulating the proppant particle, and an outer resin layer encapsulating the intermediate cross-linked terpolymer layer. The proppant particle is selected from sand, ceramic, glass, and combinations thereof. The intermediate cross-linked terpolymer layer includes styrene, methyl methacrylate, and divinyl benzene. The outer resin layer includes a cured epoxy resin formed from an epoxy resin and a curing agent.

Proppant coatings and methods of making

A method of forming a barrier to overcome lost circulation in a subterranean formation. The method includes injecting a polymer-sand nanocomposite into one or more lost circulation zones in the subterranean formation where the polymer-sand nanocomposite is formed from sand mixed with a polymer hydrogel. Further, the polymer hydrogel includes a hydrogel polymer, an organic cross-linker, and a salt. The sand additionally comprises a surface modification. The associated method of preparing a polymer-sand nanocomposite lost circulation material for utilisation in forming the barrier is provided.

Polymer-sand nanocomposite lost circulation material

A polymer-nanofiller hydrogel including polymer hydrogel and nanofiller. The nanofiller is or includes nanosand. A method for forming the polymer-nanofiller hydrogel. A method of treating a wellbore in a subterranean formation, including applying a polymer-nanofiller hydrogel to the wellbore.

Polymer-nanofiller hydrogels

A method of forming a barrier to overcome lost circulation in a subterranean formation. The method includes injecting a polymer-sand nanocomposite into one or more lost circulation zones in the subterranean formation where the polymer-sand nanocomposite is formed from sand mixed with a polymer hydrogel. Further, the polymer hydrogel includes a hydrogel polymer, an organic cross-linker, and a salt. The sand additionally comprises a surface modification. The associated method of preparing a polymer-sand nanocomposite lost circulation material for utilization in forming the barrier is provided.

A method for producing a coated proppant having an intermediate cross-linked terpolymer layer includes mixing a monomers solution including a first monomer, a second monomer that is different from the first monomer, a cross-linking agent, and an initiator. The proppant particle is combined with the monomers solution, and the monomer solution on the surface of the at least one proppant particle is polymerized to form at least one proppant particle having the intermediate cross-linked terpolymer layer on a surface of the at least one proppant particle. A resin solution including an epoxy resin, a curing agent, and graphene is mixed, and combined with the at least one proppant particle having the intermediate cross-linked terpolymer layer on a surface of the at least one proppant particle. The resin solution is cured to form the coated proppant comprising an intermediate cross-linked terpolymer layer.

Methods for making proppant coatings

The multi-layered sand assembly comprising neat sand, super-hydrophilic and super-hydrophobic sands for feasible and sustainable desert agriculture is described. The ingredients such as PAM used in the super-hydrophilic sand layer and the PS-PMMA/DVB polymer for the super-hydrophobic layer are relatively less expensive and thus the overall development of the coated sand is economical and cost effective for the mass production of modified sand layers. The tandem action of high water absorption and retention over time by super-hydrophilic sand layer and high water repulsion to avoid water loss by super-hydrophobic sand of the proposed assembly would make the achievable agriculture in desert lands.

Growing community of inventors

Riyadh, Saudi Arabia

Mohan Raj Krishnan