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7622427 |
Ethoxylated raw cotton linters for completion and workover fluids
A completion and workover fluid composition comprising, water and at least one rheology modifier and/or fluid loss control agent, and at least one other ingredient selected from the group...
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7589049 |
Additive for increasing the density of a fluid for casing annulus pressure
A method of controlling the pressure of a casing annulus in a subterranean well that includes injecting into the casing annulus a composition including a base fluid and a polymer coated colloidal...
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7585817 |
Compositions and methods for improving the productivity of hydrocarbon producing wells using a non-ionic fluorinated polymeric surfactant
Compositions comprise nonionic fluorinated polymeric surfactants and solvent. The solvent comprises: at least one of a polyol or polyol ether, wherein the polyol and polyol ether have from 2 to 25...
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7579302 |
Friction reducer performance by complexing multivalent ions in water
Embodiments relate to improving the performance of anionic friction reducing polymers in water containing multivalent ions. Exemplary embodiments relate to methods of improving the performance of...
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7541318 |
On-the-fly preparation of proppant and its use in subterranean operations
The present invention relates to methods for making proppants on-the-fly during subterranean treatment operations. Some embodiments of the present invention provide methods of preparing proppant...
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7510005 |
Controlling pressure and static charge build up within an annular volume of a welllbore
A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid comprising at least one...
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7491682 |
Method of inhibiting or controlling formation of inorganic scales
A well treating composition of a composite containing a scale inhibitor adsorbed onto a water-insoluble adsorbent is useful in the control, formation and treatment of inorganic scales in a...
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7488705 |
Oilwell sealant compositions comprising alkali swellable latex
Sealant compositions comprising an alkali swellable latex and a pH increasing material and methods of using the same to service a wellbore are provided. In one embodiment, the sealant composition...
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7484564 |
Delayed tackifying compositions and associated methods involving controlling particulate migration
Methods and compositions relating to delayed tackifying compositions that comprise an aqueous tackifying agent and a delayed acid-releasing activator that may be used to stabilize particulates and...
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7441599 |
Controlling the pressure within an annular volume of a wellbore
A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to...
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7398825 |
Methods of controlling sand and water production in subterranean zones
Methods for stabilizing portions of a subterranean formation and controlling the production of water from those subterranean formations. In one embodiment, the methods of the present invention...
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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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7363978 |
Methods of using reactive surfactants in subterranean operations
Novel uses of reactive surfactants in treating subterranean formations and/or proppant particulates are provided. In one embodiment, the present invention provides a method comprising: providing a...
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7332459 |
Method for scale inhibition in oil wells
A method of inhibiting scale formation in a subterranean formation comprising: (a) injecting a suspension comprising particles of a controlled release scale inhibitor suspended in an aqueous medium...
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7300973 |
Composition for recovering hydrocarbon fluids from a subterranean reservoir
A composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent...
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7287586 |
Compositions and methods for plugging and sealing a subterranean formation
The invention provides for a composition for treating a subterranean formation, the composition comprising a water-swellable agent and a sealing agent. Preferably, the water-swellable agent: i)...
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7279446 |
Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performance
A method of treating a subterranean formation by injecting down a well an aqueous fluid containing a viscoelastic surfactant fluid comprising an enhanced shear recovery agent wherein shear recovery...
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7276466 |
Compositions and methods for reducing the viscosity of a fluid
The present invention relates to improved methods and compositions for reducing the viscosity of subterranean servicing fluids where the servicing fluid has been cross-linked to increase its...
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7270184 |
Method of well treatment
The invention provides a method of well treatment comprising introducing into the matrix surrounding a hydrocarbon well bore hole an emulsion the discontinuous phase of which comprises a...
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7271133 |
Methods and compositions for treating subterranean formations
Methods for treating subterranean formations and aqueous treating fluid compositions are provided. The aqueous treating fluid compositions comprise water, a water soluble hydrophobically modified...
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7270180 |
Scaling inhibitors and method for using the same in high density brines
A formulation containing a copolymer derived from a cationic monomer effectively inhibits and controls the formation of inorganic scales. The formulation has particular application in the removal...
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7261157 |
Methods of controlling particulate segregation in slurries
Methods for controlling particulate segregation comprising providing a mixture of an aqueous tackifying composition with a treatment fluid; slurrying the mixture with a first type of solid...
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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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7237609 |
Methods for producing fluids from acidized and consolidated portions of subterranean formations
A method of stimulating and stabilizing an area of a subterranean formation comprising placing an acid fluid into an area of a subterranean formation and allowing the acid to at least partially...
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7220708 |
Drilling fluid component
A method and composition is provided for a relative permeability modifying polymer for use with drilling fluids that comprises a water soluble polymer formed from a hydrophobic or hydrophobically...
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7211550 |
Compositions for controlling scaling and completion fluids
An aqueous-based composition containing cesium formate and at least one chelating agent is described. Methods of removing scaling deposits, which may include alkaline earth metal sulfates, present...
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7207387 |
Methods and compositions for use with spacer fluids used in subterranean well bores
The present invention relates to spacer fluids used in subterranean operations and, more particularly, to spacer fluids that comprise water-soluble relative permeability modifiers and methods of...
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7204311 |
Methods for controlling migration of particulates in a subterranean formation
Method of treating a portion of a subterranean formation comprising: placing a pre-pad fluid into a portion of a subterranean formation wherein the pre-pad fluid comprises a low-viscosity aqueous...
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7196040 |
Microcapsule well treatment
A material and a device for releasing chemicals in a fluid environment is disclosed, and a method for releasing substances into downhole fluid environments. The invention also relates to materials...
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7182136 |
Methods of reducing water permeability for acidizing a subterranean formation
The present invention provides a method of stimulating a subterranean formation penetrated by a well. The formation has a water-bearing section and a hydrocarbon-bearing section. The method...
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7159656 |
Methods of reducing the permeabilities of horizontal well bore sections
Methods of temporarily reducing the permeability of one or more selected sections of a subterranean formation penetrated by a horizontal well bore and the flow of water or water and hydrocarbons or...
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7159655 |
Method for inhibiting or controlling inorganic scale formations
A formulation containing a copolymer derived from a cationic monomer effectively inhibits and controls the formation of inorganic scales. The formulation has particular application in the removal...
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7151078 |
Gelable liquid and method for selectively inhibiting the gelation of a gelable liquid
A controlled-gelation aqueous solution is proposed. The solution contains a hydrophobically-aggregating gelling agent, and an effective amount of an inhibitor which suppresses hydrophobic...
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7151077 |
Polymersome compositions and associated methods of use
The present invention relates to methods and compositions for treating subterranean formations. More particularly, the present invention relates to polymersomes, viscosifying agents that comprise...
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7128148 |
Well treatment fluid and methods for blocking permeability of a subterranean zone
The present invention provides a method and treatment fluid for blocking the permeability of an elevated-temperature zone in a reservoir of a subterranean formation penetrated by a wellbore, the...
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7114568 |
Hydrophobically modified polymers for a well completion spacer fluid
A method and composition is provided for a relative permeability modifier for use with aqueous well treatment fluids that comprises a hydrophobically modified water soluble polymer or a...
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7104327 |
Methods of fracturing high temperature subterranean zones and foamed fracturing fluids therefor
The present invention provides methods of fracturing high temperature subterranean zones and viscous aqueous foamed fracturing fluids therefor. A fracturing fluid of this invention comprises water,...
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7091159 |
Compositions for and methods of stabilizing subterranean formations containing clays
A composition of matter for use in stablizing shale formations in earth boreholes comprising polymeric products, e.g., polymers of a dialkyl aminoalkyl methacrylate, which can optionally be...
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7091160 |
Methods and compositions for reducing subterranean formation permeabilities
Methods and compositions for reducing the permeabilities of subterranean formations or zones are provided. The methods of the invention are basically comprised of introducing an aqueous composition...
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7084094 |
Process for altering the relative permeability if a hydrocarbon-bearing formation
A process for treating a hydrocarbon-bearing formation having at least one hydrocarbon bearing zone and at least one water bearing zone wherein the ratio of the permeability of the hydrocarbon...
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7084096 |
Suspension of borates in non-aqueous solvents and use thereof
A non-aqueous suspension including boron-containing particulates, a low molecular weight polyalkylene glycol and a suspension stabilizer is provided. Methods of crosslinking water soluble polymers...
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7021378 |
Method for enhancing the retention efficiency of treatment chemicals in subterranean formations
A method for retaining a treatment chemical in a subterranean formation containing hydrocarbons is disclosed. The method includes first preparing an emulsion. The emulsion contains an oil...
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6986391 |
Methods of fracturing subterranean zones penetrated by well bores and fracturing fluids therefor
The present invention provides improved methods of fracturing subterranean zones penetrated by well bores and improved fracturing fluids. The fracturing fluids are basically comprised of water, a...
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6936574 |
Process for controlling gas migration during well cementing
The present invention provides a cement composition and a process for using the cement composition to inhibit gas migration from a subterranean zone into the cement. The process comprises...
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6927194 |
Well kill additive, well kill treatment fluid made therefrom, and method of killing a well
For well kill treatment to prevent the intrusion of formation fluids into the wellbore while the well is open, a well kill additive including a dry mixture of water soluble crosslinkable polymer, a...
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6894007 |
Additives for inhibiting gas hydrate formation
The invention relates to the use of compounds of the formula (1)
in which
R 1 is C 1 - to C 24 -alkyl, C 2 - to C 24 -alkenyl or a C 6 - to C 18 -aryl radical which may be substituted by a C...
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6875729 |
Sealing composition
A method and sealing composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the sealing composition comprises a mixture of cementitious material, cross-linkable...
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6855672 |
Copolymers useful for gelling acids
Disclosed is a copolymer useful for preparing acid gels comprising a copolymer having a copolymer backbone, the copolymer having a general formula:
wherein: (a) A is an H or other terminating...
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6852676 |
Well completion foamed spacer fluids and methods
Well completion foamed spacer fluids and methods of using the foamed spacer fluids are provided. A method of the invention for displacing a first fluid from a well bore with an incompatible second...
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6838417 |
Compositions and methods including formate brines for conformance control
Compositions and methods are provided for reducing the permeability of subterranean zones. More particularly, water-soluble polymeric compositions which form cross-linked gels in the zones. In...
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