Patent classifications
C09K8/82
HYDROCARBON BASED CARRIER FLUID
Y-grade NGL or L-grade is used as a carrier fluid to transport one or more chemical additives into a hydrocarbon bearing reservoir to treat the hydrocarbon bearing reservoir. The Y-grade NGL or L-grade and the chemical additives may be chilled and/or foamed.
HYDROCARBON BASED CARRIER FLUID
Y-grade NGL or L-grade is used as a carrier fluid to transport one or more chemical additives into a hydrocarbon bearing reservoir to treat the hydrocarbon bearing reservoir. The Y-grade NGL or L-grade and the chemical additives may be chilled and/or foamed.
DILUTED CATIONIC FRICTION REDUCERS
A water-in-oil emulsion having an oil phase (O) and an aqueous phase (A) at an O/A ratio of from about 1:8 to about 10:1; wherein the water-in-oil emulsion includes the oil phase as a continuous phase that includes an inert hydrophobic liquid, and the aqueous phase as a dispersed phase of distinct particles in the oil phase that includes water, a water soluble polymer, and at least one surfactant; wherein the water soluble polymer includes from about 1 to about 60 weight percent of one or more cationic monomers, wherein the amount is by total weight of the water soluble polymer; wherein the water soluble polymer is present in an amount from about 5 to about 40 weight percent of the water-in-oil emulsion; and wherein an aqueous solution prepared by inverting the water-in-oil emulsion by adding it to water has at least comparable viscosity build to an aqueous solution made from a water-in-oil emulsion of the same composition containing 15 weight percent more water soluble polymer. Also provided is a method of treating a portion of a subterranean formation that includes the steps of: (a) providing a water-in-oil emulsion according to the present disclosure; (b) inverting the water-in-oil emulsion by adding it to water at from about 0.1 to about 5 gallons of water-in-oil emulsion per thousand gallons of water to form a friction reducing treatment solution containing from about 0.0005 weight percent to about 0.12 weight percent water soluble polymer based on the weight of the treatment solution; and (c) introducing the treatment solution into the portion of the subterranean formation.
DILUTED CATIONIC FRICTION REDUCERS
A water-in-oil emulsion having an oil phase (O) and an aqueous phase (A) at an O/A ratio of from about 1:8 to about 10:1; wherein the water-in-oil emulsion includes the oil phase as a continuous phase that includes an inert hydrophobic liquid, and the aqueous phase as a dispersed phase of distinct particles in the oil phase that includes water, a water soluble polymer, and at least one surfactant; wherein the water soluble polymer includes from about 1 to about 60 weight percent of one or more cationic monomers, wherein the amount is by total weight of the water soluble polymer; wherein the water soluble polymer is present in an amount from about 5 to about 40 weight percent of the water-in-oil emulsion; and wherein an aqueous solution prepared by inverting the water-in-oil emulsion by adding it to water has at least comparable viscosity build to an aqueous solution made from a water-in-oil emulsion of the same composition containing 15 weight percent more water soluble polymer. Also provided is a method of treating a portion of a subterranean formation that includes the steps of: (a) providing a water-in-oil emulsion according to the present disclosure; (b) inverting the water-in-oil emulsion by adding it to water at from about 0.1 to about 5 gallons of water-in-oil emulsion per thousand gallons of water to form a friction reducing treatment solution containing from about 0.0005 weight percent to about 0.12 weight percent water soluble polymer based on the weight of the treatment solution; and (c) introducing the treatment solution into the portion of the subterranean formation.
ENHANCING FOAM STABILITY USING ALLIUM SATIVUM OIL
Foaming fluid composition and methods for enhanced oil recovery are provided with enhanced foaming properties. The foaming composition may include a surfactant and allium sativum oil where allium sativum oil may be included in an amount ranging from 20 to 75 vol % in respect to the total volume of the surfactant and the allium sativum oil. Methods of enhancing recovery of oil from an oil containing formation are also provided. Methods may include injecting a foaming composition into the oil containing formation, where the foaming composition may include a surfactant and allium sativum oil. Methods may also include the foaming composition that includes allium sativum oil in an amount ranging from 20 to 75 vol % in respect to the total volume of the surfactant and the allium sativum oil.
ENHANCING FOAM STABILITY USING ALLIUM SATIVUM OIL
Foaming fluid composition and methods for enhanced oil recovery are provided with enhanced foaming properties. The foaming composition may include a surfactant and allium sativum oil where allium sativum oil may be included in an amount ranging from 20 to 75 vol % in respect to the total volume of the surfactant and the allium sativum oil. Methods of enhancing recovery of oil from an oil containing formation are also provided. Methods may include injecting a foaming composition into the oil containing formation, where the foaming composition may include a surfactant and allium sativum oil. Methods may also include the foaming composition that includes allium sativum oil in an amount ranging from 20 to 75 vol % in respect to the total volume of the surfactant and the allium sativum oil.
DRILLING FLUID ADDITIVES AND FRACTURING FLUID ADDITIVES CONTAINING CELLULOSE NANOFIBERS AND/OR NANOCRYSTALS
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.
DRILLING FLUID ADDITIVES AND FRACTURING FLUID ADDITIVES CONTAINING CELLULOSE NANOFIBERS AND/OR NANOCRYSTALS
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.
STABLE HIGH SOLIDS SLURRY COMPOSITIONS
A slurry composition that includes (A) a solvent, (B) a suspension aid, (D) an alkoxylated fatty amine, (E) an active ingredient, and optionally (C) a polar activator. The slurry composition may be formulated with up to 75 wt. % of the active ingredient (E), based on a total weight of the slurry composition, and remain as a pumpable and stable suspension. A concentrated slurry base is also disclosed which includes the solvent (A), the suspension aid (B), the polar activator (C), and the alkoxylated fatty amine (D), all being present at a higher concentration in the concentrated slurry base than a slurry composition made therefrom. A method of treating a subterranean formation is also disclosed, whereby the slurry composition is mixed with an aqueous fluid to form a treatment fluid, and the treatment fluid is introduced through a wellbore penetrating the subterranean formation.
STABLE HIGH SOLIDS SLURRY COMPOSITIONS
A slurry composition that includes (A) a solvent, (B) a suspension aid, (D) an alkoxylated fatty amine, (E) an active ingredient, and optionally (C) a polar activator. The slurry composition may be formulated with up to 75 wt. % of the active ingredient (E), based on a total weight of the slurry composition, and remain as a pumpable and stable suspension. A concentrated slurry base is also disclosed which includes the solvent (A), the suspension aid (B), the polar activator (C), and the alkoxylated fatty amine (D), all being present at a higher concentration in the concentrated slurry base than a slurry composition made therefrom. A method of treating a subterranean formation is also disclosed, whereby the slurry composition is mixed with an aqueous fluid to form a treatment fluid, and the treatment fluid is introduced through a wellbore penetrating the subterranean formation.