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7612021 |
Methods and compositions utilizing lost-circulation materials comprising composite particulates
Disclosed embodiments relate to compositions and methods for using a composite particulate comprising a cellulosic fiber and a filler as a lost-circulation material. An example of a method of...
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7591320 |
Method of cementing expandable well tubing
The invention describes a method of lining a well using expandable tubing including the steps of lowering a expandable tubing in a well bore; injecting a sealant composition into said well; letting...
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7578347 |
Method of sealing an annular space in a wellbore
A method of sealing a space in a wellbore formed in an earth formation comprises inserting a plurality of swellable particles into the space by pumping them in a carrier fluid, the particles being...
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7576042 |
Salt water stable latex cement slurries
A method of servicing a wellbore comprising preparing a cement slurry by premixing at least one latex, at least one stabilizer, and optionally water to form a homogeneous solution, further mixing...
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7565929 |
Degradable material assisted diversion
Degradable material assisted diversion (DMAD) methods for well treatment, DMAD treatment fluids, and removable plugs for DMAD in downhole operations. A slurry of solid degradable material is...
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7541317 |
Downhole drilling compositions and methods of preparation
The invention provides a method of altering the properties of a drilling fluid by adding effective amounts of crushed or whole oilseeds or mixtures of crushed whole oilseeds to a drilling fluid....
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7523784 |
Method of using humic acid grafted fluid loss control additives in cementing operations
Exemplary embodiments of the cement compositions comprise water, a cement, and a fluid loss control additive, the fluid loss control additive comprising a graft copolymer. The graft copolymer...
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7510004 |
Method for treating an underground formation
A swellable polymer gel composition for use in subterranean formations. The composition comprises water, a water soluble polymer, a water soluble crosslinking system and a swelling agent. The...
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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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7475727 |
Methods of improving conformance control in fractured hydrocarbon reservoirs
Three methods for improving the blocking ability of gels by improving the performance of gels in fractured reservoirs are provided. First method utilizes overload of a crosslinker, the second...
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7461697 |
Methods of modifying particulate surfaces to affect acidic sites thereon
Methods comprising: providing a treatment fluid that comprises a base fluid and a least a plurality of coated particulates, the coated particulates having been treated with a surface modification...
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7448451 |
Methods for controlling migration of particulates in a subterranean formation
Methods of controlling particulate migration in a portion of a subterranean formation comprising placing a pre-flush fluid into the portion of the subterranean formation; and then, placing a...
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7448449 |
Strength retrogression preventer
Cementitious slurries capable of controlling and/or preventing strength retrogression during the cementing of a formation contain a bismuth salt or derivative thereof. Bismuth trioxide is...
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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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7441598 |
Methods of stabilizing unconsolidated subterranean formations
Methods of stabilizing unconsolidated portions of a subterranean formation are provided. In one embodiment, the methods comprise: creating or enhancing at least two slots in an unconsolidated...
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7422062 |
Methods of treating subterranean formations using treatment fluids comprising chlorinated carbohydrates
Subterranean treatment operations, and more particularly, methods of treating subterranean formations using treatment fluid compositions including chlorinated carbohydrates, are provided. An...
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7405182 |
Composition for decreasing lost circulation during well operation
A method is provided for reducing lost circulation when aqueous, oil, or synthetic based drilling fluid is used. The method includes injecting two fluids into the well bore and lost circulation...
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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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7395861 |
Methods of cementing subterranean formations using cement compositions comprising maltodextrin
Subterranean treatment operations, and more particularly, methods of cementing subterranean formations using cement compositions including maltodextrin, are provided. An example of a method of the...
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7388045 |
Cement compositions comprising lignite grafted fluid loss control additives
Novel well cement compositions are provided. Exemplary embodiments of the well cement compositions comprise water, a cement and a fluid loss control additive comprising a graft polymer. The graft...
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7380600 |
Degradable material assisted diversion or isolation
A method for well treatment by forming a temporary plug in a fracture, a perforation, a wellbore, or more than one of these locations, in a well penetrating a subterranean formation is provided, in...
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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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7350576 |
Methods of sealing subterranean formations using rapid setting plugging compositions
Methods for using rapid setting plugging compositions comprising oil, clay, magnesium chloride, and magnesium oxide powder to seal permeable zones in subterranean formations are provided. The...
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7350574 |
Methods of retarding the setting of a cement composition using biodegradable monomers
Methods of retarding the setting of a cement composition comprise including one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N′-iminodisuccinic...
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7347265 |
Method of forming temporary blocking gel containing guar derivative
A high temperature blocking gel contains a blend of an aqueous fluid and carboxymethyl guar and a crosslinking agent. The gel exhibits excellent hydration capability in brines and positive...
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7347263 |
Networked polymeric gels and use of such polymeric gels in hydrocarbon recovery
A composition includes water having a salinity of at least 1 ppt, at least one hydrophilic polymer containing primary (—NH 2 ) and/or secondary (—NHR) amine groups and at least one saccharide...
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7341106 |
Methods for wellbore strengthening and controlling fluid circulation loss
A sealant composition and methods for using the same are disclosed. In an embodiment, a method of servicing a wellbore in contact with a subterranean formation is disclosed. The method comprises...
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7334639 |
In-situ solidification of invert emulsion fluids to form gas tight annular barrier
A method for sealing a subterranean zone is disclosed. The method includes the steps of preparing a wellbore fluid, placing the wellbore fluid into at least a portion of an annular space between...
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7334638 |
Methods of improving the shelf life of a cement composition comprising a coated gas-generating material
According to various embodiments, methods of increasing a shelf life of a gas-generating material comprise: including a C 8 -C 18 hydrocarbon in a mixture used to coat the gas-generating material....
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7328745 |
High molecular weight polyamine salts as clay stabilizing agents
A clayish subterranean formation, such as may be encountered in rock surrounding a well bore during hydrocarbon recovery operations may be stabilized with relatively high molecular weight polyamine...
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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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7325613 |
Crosslinkable polymer compositions comprising phenols and associated methods
Crosslinkable-polymer compositions that comprise a chitosan-based compound and a phenol source, and associated methods, are provided. Various methods of use are also provided. In one embodiment,...
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7322414 |
Crosslinkable-polymer compositions and associated methods
Crosslinkable-polymer compositions are provided that may be useful for, among other things, reducing, stopping, or diverting the flow of fluids in subterranean formations. The crosslinkable-polymer...
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7304098 |
Hydrogel for use in downhole seal applications
The present invention is a composition for forming seals. The composition includes a base material and a hydrogel. The base materials is preferably an elastomer or a thermoplastic. Seals formed...
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7297663 |
Method of decreasing lost circulation during well operations and additive therefor
The invention discloses an additive for weighted aqueous slurries to reduce lost circulation during well drilling operations, a method of preparing the additive, and a method of reducing lost...
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7296625 |
Methods of forming packs in a plurality of perforations in a casing of a wellbore
The invention provides a method of forming packs in a plurality of perforations in a casing of a wellbore, the method comprising the steps of: (a) forming a plug of a plugging particulate material...
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7290613 |
Cement compositions comprising aromatic sulfonated polymers and methods of using the same
A method of servicing a wellbore that penetrates a subterranean formation includes displacing a cement composition comprising an aromatic sulfonated polymer into the wellbore and allowing the...
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7284610 |
Polyamine salts as clay stabilizing agents
A clayish subterranean formation, such as may be encountered in rock surrounding a well bore during hydrocarbon recovery operations may be stabilized with a polyamine salt of an imide of polymaleic...
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7273099 |
Methods of stimulating a subterranean formation comprising multiple production intervals
A method of stimulating a production interval adjacent a well bore having a casing disposed therein, that comprises introducing a carrier fluid comprising first particulates into the well bore,...
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7268101 |
Formate based liquid gel concentrates
A liquid gel concentrate for forming a high viscosity treating fluid is provided which can be premixed and stored before being used. The concentrate is comprised of an aqueous formate solution, at...
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7246665 |
Methods of using settable compositions in a subterranean formation
The present invention relates to settable compositions that comprise magnesium oxide and at least one divalent salt and associated methods of use. In some embodiments, the present invention...
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7228905 |
Zeolite compositions having enhanced compressive strength
Methods for performing wellbore operations using a treating fluid that includes zeolite, an activator, and an organic acid or salt thereof. The treating fluid used in the methods includes a zeolite...
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7216707 |
Cement compositions with improved fluid loss characteristics and methods of cementing using such cement compositions
The present invention provides a method of cementing in a subterranean formation that includes providing a cement composition that includes water, cement, and a fluid loss control additive that...
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7214792 |
Microbial exopolysaccharide and uses thereof
A novel microorganism producing a nontoxic, non-antigenic exopolysaccharide is taught. The exopolysaccharide has neutral sugars migrating at the same rate as mannose, fucose, fructose and...
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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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7198104 |
Subterranean fluids and methods of cementing in subterranean formations
Subterranean fluids, and more particularly, subterranean fluids comprising a hydraulic cement in an invert emulsion, and methods of using such fluids in subterranean operations, are provided. An...
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7188673 |
Process for reducing the production of water in oil wells
A process is described for reducing the production of water in oil wells which comprises the injection into the formation around the well of an aqueous solution of one or more polymers selected...
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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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7150322 |
Cement compositions comprising environmentally compatible defoamers and methods of use
Cement compositions including environmentally compatible defoamers and methods of using such cement compositions are provided herein. An example of a method is a method of cementing in a...
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7147056 |
Subterranean fluids and methods of using these fluids in subterranean formations
The present invention provides subterranean fluids comprising a hydraulic cement in an invert emulsion, and methods of using such fluids in subterranean well cementing operations. The fluids...
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