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7618926 |
Method of foaming saturated or near saturated brines with synergistic mixtures
A synergistic blend for foaming concentrated brines comprises at least one foaming agent (in an amount between from about 10 to about 90 weight percent of the blend) and a compound of the formula:
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7615517 |
Use of mineral oils to reduce fluid loss for viscoelastic surfactant gelled fluids
Fluids viscosified with viscoelastic surfactants (VESs) may have their fluid loss properties improved with at least one mineral oil which has a viscosity greater than 20 cps at ambient temperature....
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7595283 |
Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation
The present invention relates to subterranean treatment fluids, and more particularly, the present invention relates to subterranean treatment fluids comprising relative permeability modifiers and...
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7589048 |
Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation
The present invention relates to subterranean treatment fluids, and more particularly, the present invention relates to subterranean treatment fluids comprising relative permeability modifiers and...
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7575054 |
Self diverting matrix acid
A method is described for treating a subterranean formation with a low viscosity fluid system that contains a viscoelastic surfactant at a concentration too low to viscosify the fluid, but that is...
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7566686 |
Shale inhibition additive for oil/gas down hole fluids and methods for making and using same
An under-balanced drilling fluid additive is disclosed which reduces reactive shale and/or clay swelling during under-balanced drilling operations, where the additive includes an effective amount...
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7563750 |
Methods and compositions for the diversion of aqueous injection fluids in injection operations
An exemplary method of the present invention for performing an injection operation includes providing a water-soluble relative permeability modifier, introducing the water-soluble relative...
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7550413 |
Fluid loss control agents for viscoelastic surfactant fluids
Alkaline earth metal compounds may be fluid loss control agents for viscoelastic surfactant (VES) fluids used for well completion or stimulation in hydrocarbon recovery operations. The VES fluid...
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7544643 |
Viscosity enhancers for viscoelastic surfactant stimulation fluids
Piezoelectric crystal particles (which include pyroelectric crystal particles) enhance the viscosity of aqueous fluids that have increased viscosity due to the presence of viscoelastic surfactants...
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7544642 |
Zeolite-containing remedial compositions
Methods and compositions for wellbore treating fluids that include zeolite and at least one carrier fluid.
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7527097 |
Methods for using reversible phase oil-based drilling fluid
A method of fracturing a subterranean formation, the method including injecting a fracturing fluid into the well, wherein said fracturing fluid includes: an oleaginous fluid; and an amine...
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7517836 |
Defoaming methods and compositions
Embodiments of the present invention are directed to defoaming methods and compositions for well treatment fluids. An exemplary embodiment of the present invention provides a method of defoaming a...
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7514391 |
Method and composition for removing filter cake from a horizontal wellbore using a stable acid foam
A composition and method for removing a filter cake from a horizontal wellbore in a subterranean formation using a composition containing a inorganic or organic acidic material, a cationic...
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7514390 |
Method for removing filter cake from a horizontal wellbore using acid foam
A composition and method for removing a filter cake from a horizontal wellbore in a subterranean formation using a composition containing a inorganic or organic acidic material, a cationic...
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7507694 |
Surfactant-free emulsions and methods of use thereof
In one embodiment, the present invention provides a drilling fluid composition that comprises a surfactant-free emulsion comprising an oleaginous fluid, a fluid that is at least partially...
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7494957 |
Energized fluids and methods of use thereof
The present invention relates to novel aqueous wellbore treatment fluids containing a gas component, a heteropolysaccharide, an electrolyte, and a surfactant, wherein the fluids may further include...
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7481276 |
Method of inhibiting and/or preventing corrosion in oilfield treatment applications
Corrosive effects arising during oilfield treatment applications are inhibited and/or prevented by introducing into an oil or gas well at least one compound of formula I:
wherein:
R 1 ...
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7417011 |
Method and composition for recovering hydrocarbon fluids from a subterranean reservoir
A method of modifying the permeability to water of a subterranean formation comprising injecting into the subterranean formation an aqueous composition comprising from about 0.005 percent to about...
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7407916 |
Foamed treatment fluids and associated methods
Foamed treatment fluids comprising water, a gas, and a foaming and foam stabilizing surfactant mixture comprising an alkali salt of an alkyl ether sulfate, wherein the alkali salt of the alkyl...
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7402549 |
Viscoelastic surfactant rheology modification
A method for shortening the shear recovery time of cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a rheology enhancer selected from...
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7399732 |
Fracturing fluid containing amphoteric glycinate surfactant
An improved method and fracturing fluid for hydraulic fracturing of a subterranean formation, the fracturing fluid including a surfactant, a water soluble or dispersible anionic organic salt, an...
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7398824 |
Method for inhibiting or controlling inorganic scale formations with copolymers of acrylamide and quaternary ammonium salts
A formulation containing a copolymer derived from a cationic monomer effectively inhibits and controls the formation of inorganic scales. Suitable copolymers include those comprising an acrylamide...
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7381689 |
Methods for inhibiting hydrate blockage in oil and gas pipelines using amide compounds
A method and an amide composition used therein for inhibiting, retarding, mitigating, reducing, controlling and/or delaying formation of hydrocarbon hydrates or agglomerates of hydrates. The method...
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7373977 |
Process for oil recovery employing surfactant gels
A process for recovering oil by injecting into a subterranean oil-bearing reservoir through one or more injection wells, an aqueous solution containing one or more amphoteric alkyl amido betaine...
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7358215 |
Quaternary ammonium salts as thickening agents for aqueous systems
This invention relates to the use of alkyl amido quaternary ammonium salts, and formulations thereof, as thickening agents in aqueous based fluids, especially those used in oil field applications....
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7354886 |
Pumpable multiple phase compositions for controlled release applications downhole
Pumpable multiple phase vesicle compositions carry agents and components downhole or through a conduit, and controllably releasing them at a different place and time by breaking the compositions....
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7345010 |
Compositions for drilling fluids useful to provide flat temperature rheology to such fluids over a wide temperature range and drilling fluids containing such compositions
The invention is of oil-based drilling fluids including invert emulsion fluids that are able to maintain a relatively consistent rheological profile over a wide temperature range. The invention...
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7326670 |
Well service fluid and method of making and using the same
A well service fluid comprising one or more anionic viscoelastic surfactants and one or more polymers is described. The fluids can contain an aqueous or non-aqueous fluid and/or a buffer for...
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7318475 |
Matrix acidizing high permeability contrast formations
A method for stimulating thick or multilayered heterogeneous or homogeneous formations in a single trip without packers involves perforating with tubing conveyed perforation, then injecting a...
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7312184 |
Recovery composition and method
A method and composition are described for improving recovery of oil from an oil reservoir. The method includes adding an effective amount of a fatty acid alkyl ester oil recovery composition to an...
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7290614 |
Methods for effecting controlled break in pH dependent foamed fracturing fluid
The invention provides a fluid for use in a subterranean formation penetrated by a wellbore, the fluid comprising: (a) water; (b) delayed release acid; (c) a surfactant comprising a tertiary alkyl...
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7288505 |
Fluid system having controllable reversible viscosity
This Invention relates to methods of treating a subterranean hydrocarbons reservoir comprising contacting the formation with a treating fluid comprising an aqueous solution, an acid, a surfactant...
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7275596 |
Method of using degradable fiber systems for stimulation
A method for minimizing the amount of metal crosslinked viscosifier necessary for treating a wellbore with proppant or gravel is given. The method includes using fibers to aid in transporting,...
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7244694 |
Viscoelastic fluids containing nanotubes for oilfield uses
The present invention relates to viscoelastic fluids that contain nanotube structures that may be used advantageously as oilfield stimulation fluids in many different applications, most...
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7238648 |
Viscoelastic surfactant fluids and related methods of use
Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The...
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7238646 |
Invertible well bore servicing fluid
A method for using an invert emulsion fluid in a well bore, comprising placing an invert emulsion fluid in a well bore, wherein the invert emulsion fluid comprises an oleaginous fluid, a...
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7226896 |
Organic emulsion-breaking formula and its use in treating well bores drilled in oil-base mud
An organic based emulsion-breaking formulation for use in treating well bores drilled in oil-bearing mud that is not eco-toxic and is optimally compatible with formation fluids comprises:
as...
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7207388 |
Non-Damaging Fluid-Loss Pill and Method of Using the Same
A fluid-loss pill that includes a brine solution and an effective amount of a viscoelastic surfactant is disclosed. The viscoelastic surfactant preferably includes at least one compound selected...
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7178594 |
Method for using reversible phase oil-based drilling fluid
Invert emulsion compositions including an oleaginous, a non-oleaginous and an amine surfactant that are useful in the oil and gas well drilling art are disclosed. The amine surfactant is selected...
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7163056 |
Esterquat acidic subterranean treatment fluids and methods of using esterquats acidic subterranean treatment fluids
The present invention relates to acidic treatment fluids that comprise an acid fluid and an ester-containing quaternary ammonium compound (“esterquat”) and methods of their use. One embodiment...
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7160843 |
Oil-based demulsifying agent and its use in the treatment of drains bored in oil-based mud
An oil-based demulsifying formulation which can be used in the treatment of drains bored in oil-based mud, non ecotoxic and optimally compatible with formation fluids, comprises at least one...
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7156175 |
Methods of generating gas in well fluids
The present invention relates to methods of chemically generating gas in aqueous fluids utilized in the drilling and completion of wells such as drilling fluids, spacer fluids, and aqueous acid...
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7148185 |
Viscoelastic surfactant fluids stable at high brine concentration and methods of using same
A viscous aqueous high density well treatment fluid composition stable at high temperature containing a surfactant and inorganic salts is described. Methods of preparing the fluid and increasing...
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7144844 |
Method of using viscoelastic vesicular fluids to enhance productivity of formations
A process for enhancing the productivity of a formation consists of introducing into the formation a viscoelastic fluid which contains at least one surfactant, at least one quaternary amine...
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7140433 |
Diamine terminated primary amine-aldehyde sulfur converting compositions and methods for making and using same
A new class of sulfur scavenging or converting compositions is disclosed comprising diamine terminated, amine-aldehyde adducts, where the adducts are substantially bimolecular amine-aldehyde...
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7125825 |
Amidoamine salt-based viscosifying agents and methods of use
Viscoelastic surfactants are described for use in aqueous systems to generate thickened fluids. The surfactants are alkyl amidoamine salts of inorganic acids and/or organic acids. The fluids may...
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7125483 |
Corrosion control in olefin production plants
A method for reducing acid corrosion and products of acid corrosion in a thermal cracking plant, the acid corrosion products being compounds of iron, chromium, nickel, lead, cadmium, manganese,...
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7124822 |
Foamed completion fluids and methods
Foamed completion fluids and methods of completing subterranean zones penetrated by well bores are disclosed. A method of completing a subterranean zone penetrated by a well bore comprises the...
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7119050 |
Fluid system having controllable reversible viscosity
This Invention relates to methods of treating a subterranean hydrocarbons reservoir comprising contacting the formation with a treating fluid comprising an aqueous solution, an acid, a surfactant...
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7084095 |
Methods for controlling the rheological properties of viscoelastic surfactants based fluids
It was found that the addition of polymers to viscoelastic surfactant base system allows to adjust the rheological properties of the base fluid. Depending in particular on one side of the ratio of...
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