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| Number | Title | Issue Date |
| 7350571 | Methods of preparing and using coated particulates The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. One embodiment of the present invention provides a method of preparing coated par... | 04/01/2008 |
| 7341104 | Methods of using substantially hydrated cement particulates in subterranean applications Fracturing fluids comprising a base fluid and substantially hydrated cement particulates. Methods of fracturing a subterranean formation comprising fracturing the subterranean formation so as to create or enhance one or more fractures in the subterranean formation; ... | 03/11/2008 |
| 7308939 | Methods of using polymer-coated particulates Methods are provided including a method comprising: providing a treatment fluid comprising particulates at least partially coated with a polymer, wherein the polymer is deposited on the particulates by at least partially coating the particulates with a polymer solut... | 12/18/2007 |
| 7267291 | Additive for increasing the density of an oil-based fluid and fluid comprising such additive A wellbore fluid having an oleaginous phase and an additive for increasing the density of the wellbore fluid. The additive comprises solid colloidal particles coated with a dispersant during the comminution process of forming the particles. Exemplary starting materi... | 09/11/2007 |
| 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 particulates and a second type of solid particulates and wherein the first ty... | 08/28/2007 |
| 7256159 | Fluid loss reducer for high temperature high pressure water based-mud application The present invention concerns a water-based drilling mud for utilization in the drilling of oil wells comprising an aqueous phase wherein the aqueous phase contains an oil soluble polymer in the form of a gel as a fluid loss reducer. The subject invention further r... | 08/14/2007 |
| 7204310 | Methods of use settable drilling fluids comprising cement kiln dust Settable drilling fluids comprising an aqueous-based drilling fluid and cement kiln dust. Methods of cementing in a subterranean formation comprising: providing a settable drilling fluid comprising an aqueous-based drilling fluid and cement kiln dust, introducing th... | 04/17/2007 |
| 7128149 | Apparatus and methods for improved fluid displacement in subterranean formations Apparatus and methods for determining suitable displacement fluids for use in subterranean cementing operations, and methods of cementing that use such displacement fluids, are provided. Examples of methods include methods of water-wetting an annulus in a subterrane... | 10/31/2006 |
| 7121339 | Solids-stabilized oil-in-water emulsion and a method for preparing same A solids-stabilized oil-in-water emulsion and a method for preparing the solids-stabilized oil-in-water emulsion. The oil-in-water emulsion is formed by combining oil, water, solid particles and a pH enhancing agent and mixing until the solid-stabilized oil-in-water... | 10/17/2006 |
| 7104328 | Method and apparatus for hydrating a gel for use in a subterranean well The present invention relates to a method and system for hydrating a gel for treating a wellbore penetrating a subterranean formation. The method includes directing a base fluid through an inlet into a mixer having an inner chamber housing a plurality of impellors e... | 09/12/2006 |
| 7101829 | Fluid loss reducer for high temperature and high pressure water-based mud application The present invention concerns a water-based drilling mud for utilization in the drilling of oil wells comprising an aqueous phase wherein the aqueous phase contains an oil soluble polymer in the form of a gel as fluid loss reducer. The subject invention further rev... | 09/05/2006 |
| 7086466 | Use of substantially hydrated cement particulates in drilling and subterranean applications The present invention relates to substantially hydrated cement particulates. More particularly, the present invention relates to compositions comprising substantially hydrated cement particulates and associated methods of use in drilling and subterranean application... | 08/08/2006 |
| 7077219 | Foamed treatment fluids and associated methods Methods in which temperature is used to control the foaming and/or defoaming of foamed treatment fluids comprising an aqueous liquid, an ionic foaming surfactant, and a gas are provided. A method of treating at least a portion of a subterranean formation is provided... | 07/18/2006 |
| 7040419 | Foamed compositions and methods of use in subterranean zones The current invention provides improved methods and compositions for completing a well bore. In one aspect, the current invention provides a process for preparing a foamed well composition. The process utilizes air to foam the composition after the air has been trea... | 05/09/2006 |
| 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 continuous phase and first and second aqueous phases. The first aqueous phase ... | 04/04/2006 |
| 6959773 | Method for drilling and completing boreholes with electro-rheological fluids In a method for drilling, completing and fracturing a subterranean formation, an electrical potential is applied to oil or synthetic based drilling fluid to increase the viscosity of the fluid and enable the fluid to entrain drill cuttings and proppant. The same bas... | 11/01/2005 |
| 6867170 | Additive for, treatment fluid for, and method of plugging a tubing/casing annulus in a well bore For tubing/casing annulus plug treatment to plug a well, a tubing/casing annulus plug additive including a dry mixture of water soluble crosslinkable polymer, a crosslinking agent, and a reinforcing material of fibers and/or comminuted plant materials. The method of... | 03/15/2005 |
| 6793025 | Double emulsion based drilling fluids A method of electrically logging subterranean wells using a conductive double emulsion fluid includes a miscible combination of an oleaginous fluid, an emulsifier capable of forming a microemulsion, an emulsifier capable of forming an invert emulsion, and an electro... | 09/21/2004 |
| 6750179 | Well plug additive, well plug treatment fluid made therefrom, and method of plugging a well For well plug treatment to plug an abandoned well, a well plug additive including a dry mixture of water soluble crosslinkable polymer, a crosslinking agent, and a reinforcing material of fibers and/or comminuted plant materials. The method of forming a well plug fl... | 06/15/2004 |
| 6734144 | Solids-stabilized water-in-oil emulsion and method for using same A method for enhancing the stability of a solids-stabilized water-in-oil emulsion by pretreating the oil prior to emulsification. The pretreatment step can be accomplished by adding dilute acid to the oil, adding a lignosulfonate additive to the oil, sulfonating the... | 05/11/2004 |
| 6716798 | Conformance improvement additive, conformance treatment fluid made therefrom, method of improving conformance in a subterranean formation For conformance treatment to plug an opening in subterranean hydrocarbon bearing formation, a conformance additive including a dry mixture of water soluble crosslinkable polymer, a crosslinking agent, and a reinforcing material of fibers and/or comminuted plant mate... | 04/06/2004 |
| 6664215 | Composition for controlling wellbore fluid and gas invasion and method for using same The disclosure is directed to a composition for controlling wellbore fluid and gas invasion including methods for using said composition. The composition of the invention is a flowable slurry preferably comprising about 70 to 30% by weight of magnesium ox... | 12/16/2003 |
| 6562763 | Method and apparatus for homogenizing drilling fluid in an open-loop process A drilling fluid homogenizer and method of homogenizing drilling fluid which produce a non-clogging homogenized drilling fluid at a high throughput, in an open-loop process. The non-clogging homogenized drilling fluid is capable of being created at high r... | 05/13/2003 |
| 6550552 | Method for the removal and recovery of the oil component from drill cuttings Oil drill cuttings, containing an oil-based mud, may be treated by mixing the cuttings with an organic solvent. The oil drill cuttings are then separated from the organic solvent and extracted oil. The organic solvent is then separated from the oil, and m... | 04/22/2003 |
| 6514916 | Process for making sulfonated uintaite and well fluid additives including sulfonated uintaite Sulfonated uintaite is prepared by sulfonating a naturally occurring uintaite charge with a sulfonating agent such as sulfur trioxide, fuming sulfuric acid, chlorosulfonic acid, oleum, or concentrated sulfuric acid to produce sulfonic acids of uintaite. T... | 02/04/2003 |
| 6491099 | Viscous fluid applicable for treating subterranean formations A viscous fluid is shown which is useful in treating subterranean formations. The fluid is formulated from an aqueous base, an alkyl sarcosinate surfactant and a buffer suitable for adjusting the pH of the blended fluid to a range in which the fluid is su... | 12/10/2002 |
| 6488091 | Subterranean formation treating fluid concentrates, treating fluids and methods Subterranean formation treating fluid concentrates, treating fluids and methods are provided by the present invention. The treating fluid concentrates are basically comprised of water and a substantially fully hydrated depolymerized polymer. The treating ... | 12/03/2002 |
| 6475959 | Method for the rheology control of fluid phases A method for the rheology control of fluid phases, in which adducts which contain layered mixed metal hydroxides (MMH) and hectorite are used, and corresponding compositions for this purpose are claimed. Preferably used MMH are those which were produced b... | 11/05/2002 |
| 6464009 | Pumpable multiple phase compositions for controlled release applications downhole Pumpable multiple phase compositions for carrying agents and components downhole and controllably releasing them by breaking the suspensions are described. The multiple phase composition may have an external or third phase, which in turn has a first pumpa... | 10/15/2002 |
| 6410488 | Drilling fluid A fluid suitable for use as the continuous phase in a drilling fluid is disclosed. The fluid is prepared by the sequential hydrotreating, hydroisomerization and hydrogenation of a crude oil feedstock. The fluid has good low temperature properties, includi... | 06/25/2002 |
| 6337308 | Method and apparatus for homogenizing drilling fluid in an open-loop process A drilling fluid homogenizer and method of homogenizing drilling fluid which produce a non-clogging homogenized drilling fluid at a high throughput, in an open-loop process. The non-clogging homogenized drilling fluid is capable of being created at high r... | 01/08/2002 |
| 6269881 | Oil recovery method for waxy crude oil using alkylaryl sulfonate surfactants derived from alpha-olefins and the alpha-olefin compositions An oil recovery process is disclosed which uses a particular class of alkylaryl sulfonate surfactants. The surfactants are derived from an alpha-olefin stream having a broad distribution of even carbon numbers ranging from 12 to 58. The olefin stream is r... | 08/07/2001 |
| 6230814 | Process for enhancing hydrocarbon mobility using a steam additive A method for producing hydrocarbons from a subterranean formation comprises injecting steam and an additive into the formation. The additive has at least one nonaqueous fluid, which is selected so that the evaporation temperature of the additive is within... | 05/15/2001 |
| 6213214 | Pipeline treatment composites Solid, slowly dispersible well treatment composites are provided which have a sufficiently high melting point to prevent melting of the composite in hot weather. The composites have a low solubility and high specific gravity compared to prior art treatmen... | 04/10/2001 |
| 6206103 | Pipeline treatment composites Solid, slowly dispersible well treatment composites are provided which have a sufficiently high melting point to prevent melting of the composite in hot weather. The composites have a low solubility and high specific gravity compared to prior art treatmen... | 03/27/2001 |
| 6135207 | Well treatment pellets Solid, slowly dispersible well treatment composites are provided which have a sufficiently high melting point to prevent melting of the composite in hot weather. The composites have a low solubility and high specific gravity compared to prior art treatmen... | 10/24/2000 |
| 6102121 | Conformance improvement additive, conformance treatment fluid made therefrom, method of improving conformance in a subterranean formation For conformance treatment to plug an opening in subterranean hydrocarbon bearing formation, a conformance additive including a dry mixture of water soluble crosslinkable polymer, a crosslinking agent, and a reinforcing material of fibers and/or comminuted... | 08/15/2000 |
| 6068054 | Oil recovery method using an emulsion The disclosed invention provides a method for recovering hydrocarbons from a subterranean formation by injecting an emulsion, comprising oil and water, into the formation. More specifically, the emulsion is stabilized using undissolved solid particles, wh... | 05/30/2000 |
| 6025303 | Solids composition based on clay minerals and use thereof A solids composition based on clay minerals and consisting of a) 40-99.8 wt. % of a clay mineral with a reduced moisture content of ࣘ7 wt. %, b) 0.01-30 wt. % of a mixed metal hydroxide and c) 0.01-30 wt. % of a solid base, and if necessary other additi... | 02/15/2000 |
| 6016879 | Lost circulation additive, lost circulation treatment fluid made therefrom, and method of minimizing lost circulation in a subterranean formation For lost circulation treatment, a lost circulation additive including a dry mixture of water soluble crosslinkable polymer, a crosslinking agent, and a reinforcing material of fibers and/or comminuted plant materials. The method of forming a lost circulat... | 01/25/2000 |
