Saudi Arabian Oil Company

Sehmus Ozden

Feng Liang

Leiming Li

Ghaithan Al-Muntasheri

B Raghava Reddy

Rajesh Kumar Saini

Ayrat Gizzatov

Harun Ates

Hung Q Truong

Zuhair Al Yousef

Sampath K Bommareddy

A method includes extracting natural gas from a subsurface formation including a conventional gas reservoir via a first wellbore penetrating the subsurface formation, processing the natural gas in a surface processing facility and thereby generating hydrogen and a carbon dioxide (CO) brine, injecting at least a portion of the hydrogen into the subsurface formation via a second wellbore penetrating the subsurface formation for hydrogen storage, and injecting the CObrine into a saline aquifer forming part of the subsurface formation via a third wellbore penetrating the subsurface formation.

Closed loop hydrogen production and storage

Hydrogen foams may be used for placing and maintaining hydrogen in a subterranean location. For example, methods for introducing hydrogen to a subterranean location may include: placing a hydrogen foam in a subterranean location, in which the hydrogen foam comprises a continuous phase generated from a foamable composition comprising an aqueous fluid and a discontinuous phase comprising at least hydrogen gas; and maintaining the hydrogen foam in the subterranean location.

Subterranean storage of hydrogen foams

Methods and systems including a composition of a hydratable polymer slurry comprising a hydrocarbon-based solvent. The hydrocarbon-based solvent includes a hydratable polymer powder and at least one of a polar surfactant, a hydrocarbon-soluble polymer, and/or an organophilic clay, wherein the polymer slurry is prepared at a temperature greater than 22° C. by mixing.

Reduced-polymer-loading, high-temperature fracturing fluids and methods and systems related thereto

Gelled hydrocarbon fracturing fluids and their methods of preparation and use are provided. The gelled hydrocarbon fracturing fluid includes a hydrocarbon fluid, a phosphate ester, a crosslinker and a viscosifier. The crosslinker may include iron, aluminum, or combinations thereof and the viscosifier may include clay, graphite, carbon nanotubes, metallic oxide nanoparticles, and combinations thereof. The method of preparation includes combining a hydrocarbon fluid, phosphate ester, and crosslinker to form a baseline fluid. A viscosifier is added to the baseline fluid to form a gelled hydrocarbon fracturing fluid. The method of use includes treating a subterranean formation by contacting a subterranean formation with a gelled hydrocarbon fracturing fluid and generating at least one fracture in the subterranean formation.

Enhancements of gelled hydrocarbon systems

In accordance with one or more embodiments, this disclosure describes a viscoelastic fluid for a subterranean formation comprising: viscoelastic surfactant comprising the general formula: where Ris a saturated or unsaturated hydrocarbon group of from 17 to 29 carbon atoms, Rand R, are each independently selected from a straight chain or branched alkyl or hydroxyalkyl group of from 1 to 6 carbon atoms; Ris selected from H, hydroxyl, alkyl or hydroxyalkyl groups of from 1 to 4 carbon atoms; k is an integer of from 2-20; m is an integer of from 1-20; and n is an integer of from 0-20; brine solution; and at least one nanoparticle viscosity modifier comprising a particle size of 0.1 to 500 nanometers, or 0.1 to 100 nanometers.

High temperature viscoelastic surfactant (VES) fluids comprising nanoparticle viscosity modifiers

In accordance with one or more embodiments, this disclosure describes a viscoelastic surfactant fluid for a subterranean formation comprising: brine solution; at least one polyacrylamide viscosity modifier with a weight averaged molecular weight (Mw) from 250,000 g/mol to 40,000,000 g/mol; and a viscoelastic surfactant according to formula (I): where Ris a saturated or unsaturated hydrocarbon group of from 17 to 29 carbon atoms, Rand Rare each independently selected from a straight chain or branched alkyl or hydroxyalkyl group of from 1 to 6 carbon atoms; Ris selected from H, hydroxyl, alkyl or hydroxyalkyl groups of from 1 to 4 carbon atoms; k is an integer of from 2-20; m is an integer of from 1-20; and n is an integer of from 0-20.

Growing community of inventors

Houston, TX, United States of America

Sehmus Ozden