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| Number | Title | Issue Date |
| 8123853 | Calcium aluminate clinker as a refractory aggregate with and without barium addition and use thereof The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula CnAx wherein C is calcium oxide and A is aluminum oxide, wherein n is an integer from about 1 to about 12,... | 02/28/2012 |
| 7998267 | Additives for cement A belite-calcium sulphoaluminate-ferrite (BCSAF) cement composition including: a BCSAF clinker which clinker has the following mineralogical composition, based on the total weight of the clinker: 5 to 25%, preferably 10 to 20%, of a calcium aluminoferrite phase havi... | 08/16/2011 |
| 7850776 | High belite-containing sulfoaluminous clinker, method for the production and the use thereof for preparing hydraulic binders A sulphoaluminate clinker includes as a phasic formulation, compared with the total weight of clinker: 5 to 25% of a calcium aluminoferrite phase with a formulation corresponding to the general formula C2AXF(1−X), with X comprised between 0.2 and 0.8; 15 to 35% of... | 12/14/2010 |
| 7811379 | Regenerated calcium aluminate product and process of manufacture The disclosed invention provides an improved method that utilizes a liquid ladle slag in combination with a crushed material, such as a refractory brick, and alumina ladle brick or an aluminum dross, to manufacture a calcium aluminate product that can be used in the... | 10/12/2010 |
| 7727328 | Regenerated calcium aluminate product and process of manufacture The disclosed invention provides an improved method that utilizes a liquid ladle slag in combination with a crushed material, such as a refractory brick, an alumina ladle brick or an aluminum dross, to manufacture a calcium aluminate product that can be used in the ... | 06/01/2010 |
| 7695559 | Preparation of cement films by tape casting A cement suspension includes the following, in relation to the cement material: water (22-35% by weight); acetic acid (1-10% by weight); plasticizer (up to 8% by weight); and dispersant agent (0-2% by weight), having an apparent viscosity of 0.5-2 Pa·s for the cast... | 04/13/2010 |
| 7540915 | Oil-well cement slurry The invention relates to a high-performance cement comprising an alumnic cement with an aluminium content of at least more than 30%; microsilica with a grain size of 0.1 - 20 μm whereby the percentage thereof is 35 % less by weight in comparison with the weight of ... | 06/02/2009 |
| 7462234 | Wellbore servicing compositions A wellbore servicing comprising a calcium aluminate cement and at least one gelation inhibitor wherein the calcium aluminate cement comprises less than about 50 wt. % alumina, greater than about 2 wt. % iron oxide, or both. A wellbore servicing composition comprisin... | 12/09/2008 |
| 7441600 | Cement compositions with improved mechanical properties and methods of cementing in subterranean formations The present invention provides foamed cement compositions with improved mechanical properties and methods of cementing in subterranean formations, particularly in conjunction with subterranean well operations. The foamed cement compositions comprise carbon fibers, a... | 10/28/2008 |
| 7427321 | Foamed fireproofing composition and method Disclosed are formulations adapted to form a foamed cementitious composition, the foamed cementitious composition itself, a method of forming a hydraulic binder foam, and a method of conveying and applying the resulting foam to a substrate. A pumpable cementitious s... | 09/23/2008 |
| 7402202 | Method for the manufacturing of a powdered material, the powdered material and a ceramic material manufactured there from Powdered material, the binder phase of which mainly consists of a cement-based system, which powdered material has the capacity following saturation with a liquid reacting with the binder phase to hydrate to a radiopaque and chemically bonded ceramic material. Accor... | 07/22/2008 |
| 7390356 | Compositions for high temperature lightweight cementing Compositions for performing cementing operations in a subterranean zone under high temperature conditions have a density of less than about 10.5 pounds per gallon, and include calcium aluminate, water, and a lightweight additive having a specific gravity of less tha... | 06/24/2008 |
| 7381263 | Cement compositions comprising high alumina cement and cement kiln dust The present invention provides cement compositions that comprise water, high alumina cement, a soluble phosphate, and cement kiln dust. The cement compositions optionally may be foamed with a gas. Methods of cementing also are provided that comprise: providing the c... | 06/03/2008 |
| 7368010 | Calcium aluminate clinker as a refractory aggregate with and without barium addition and use thereof The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula CnAx wherein C is calcium oxide and A is aluminum oxide, wherein n is an integer from about 1 to about 12,... | 05/06/2008 |
| 7353876 | Self-degrading cement compositions and methods of using self-degrading cement compositions in subterranean formations Methods of stimulating subterranean formations are provided. More particularly, methods of fracturing subterranean formations using a fracturing fluid comprising a self-degrading cement composition are provided. An example of a method is a method of treating a subte... | 04/08/2008 |
| 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 |
| 7350573 | Servicing a wellbore with wellbore fluids comprising perlite Wellbore fluids comprising an expanded and ground perlite and methods of using the same are disclosed. In one embodiment, the methods include a method of cementing comprising preparing or placing a cement composition comprising cement, water, and an expanded and gro... | 04/01/2008 |
| 7351281 | Powdered material and ceramic material manufactured therefrom Powdered material, the binder phase of which mainly consists of a cement-based system, which powdered material has the capacity following saturation with a liquid reacting with the binder phase to hydrate to a chemically bonded ceramic material, preferably for denta... | 04/01/2008 |
| 7337842 | Methods of using cement compositions comprising high alumina cement and cement kiln dust The present invention provides cement compositions that comprise water, high alumina cement, a soluble phosphate, and cement kiln dust. The cement compositions optionally may be foamed with a gas. Methods of cementing also are provided that comprise: providing the c... | 03/04/2008 |
| 7334636 | Methods of creating high-porosity propped fractures using reticulated foam One embodiment of the prevent invention provides a method of creating a high porosity propped fracture comprising creating a slurry comprising a treatment fluid, proppant particulates, pieces of reticulated foam having cells, and an adhesive substance such that the ... | 02/26/2008 |
| 7334635 | Methods for fracturing subterranean wells A method of forming a propped fracture comprising: providing a fracture having a far-well bore area and a near-well bore area; placing first proppant particulates at least partially coated with an adhesive substance; placing a portion of second proppant particulates... | 02/26/2008 |
| 7328756 | Settable fluids comprising particle-size distribution-adjusting agents and methods of use Settable fluids comprising particle-size distribution-adjusting agents, and methods of using such settable fluids in subterranean and surface applications are provided. In certain exemplary embodiments, the settable fluid comprises a cement, a set retarder, and a pa... | 02/12/2008 |
| 7326290 | Liquid setting accelerator for a composition comprising Portland cement The invention relates to a setting accelerator for a composition comprising Portland cement, in the form of a slurry comprising at least one calcium aluminate, 0.5 4%, preferably 0.6 2.3% of an aluminous cement setting inhibitor by weight in relation to the overall ... | 02/05/2008 |
| 7326478 | Cement binder based plate The invention concerns a plate whereof the body comprises a binder containing Portland cement, a sulphoaluminous clinker and a calcium sulphate source: the binder comprises, by weight 30 to 80% of Portland cement, 20 to 70% of sulphoaluminous binder, 5 to 20% of a c... | 02/05/2008 |
| 7318473 | Methods relating to maintaining the structural integrity of deviated well bores Methods of enhancing at least partially the structural integrity of a longitudinal portion of a deviated well bore are provided. The methods include providing a gravel matrix composition; providing a longitudinal portion of a deviated well bore; and placing a suffic... | 01/15/2008 |
| 7318474 | Methods and compositions for controlling formation fines and reducing proppant flow-back Provided herein are methods for controlling the migration of particulates within a portion of a subterranean formation that comprise aqueous tackifying treatment fluids, curable resin compositions, and/or noncurable resin compositions. ... | 01/15/2008 |
| 7299875 | Methods for controlling particulate migration Many methods are provided including methods of stabilizing a portion of a subterranean formation or reducing the production of particulates from a portion of a subterranean formation comprising contacting the portion of the subterranean formation with a pre-flush fl... | 11/27/2007 |
| 7299869 | Carbon foam particulates and methods of using carbon foam particulates in subterranean applications The present invention relates to carbon foam particulates and their use in subterranean applications such as production enhancement and completion. One embodiment of the present invention provides a method of treating a subterranean formation using a servicing fluid... | 11/27/2007 |
| 7300489 | Powder metallurgical compositions and parts made therefrom Metallurgical powder compositions are provided that include calcium aluminate additives, i.e., calcium aluminate or calcium aluminate containing powders, to enhance the machinability and durability of compacted and sintered parts made therefrom. The compositions gen... | 11/27/2007 |
| 7290611 | Methods and systems for cementing wells that lack surface casing Methods and systems for cementing casing in well bores drilled in subterranean formations, and more particularly, methods and systems for cementing casing in a well bore without surface casing or a well head are provided. A method provided herein may comprise sealin... | 11/06/2007 |
| 7282093 | Cement compositions with improved mechanical properties and methods of cementing in subterranean formations Foamed cement compositions comprising carbon fibers, a hydraulic cement material, sufficient water to form a slurry, an expanding additive, and optionally, other ingredients, including any suitable additives. ... | 10/16/2007 |
| 7281581 | Methods of hydraulic fracturing and of propping fractures in subterranean formations A method of propping at least one fracture in a subterranean formation, that comprises forming a plurality of proppant aggregates, each proppant aggregate comprising a binding fluid and a filler material, and introducing the plurality of proppant aggregates into the... | 10/16/2007 |
| 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 viscosity and that crosslinking can be reversed using a delayed release aci... | 10/02/2007 |
| 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, packing the first particulates into a plurality of perforations in the c... | 09/25/2007 |
| 7273100 | Biodegradable dispersants for cement compositions and methods of cementing in subterranean formations Methods of cementing in a subterranean formation may include the steps of: providing a cement composition comprising a cement, water, and a dispersant comprising a low molecular weight starch that comprises anionic groups; placing the cement composition in the subte... | 09/25/2007 |
| 7267171 | Methods and compositions for stabilizing the surface of a subterranean formation Methods comprising providing a fracturing fluid comprising proppant particulates at least partially coated with a hardenable resin composition that comprises a hardenable resin component and a hardening agent component, wherein the hardenable resin component compris... | 09/11/2007 |
| 7267170 | Self-degrading fibers and associated methods of use and manufacture Methods are provided including a method of treating a portion of a subterranean formation comprising: providing a treatment fluid comprising a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid; placing the trea... | 09/11/2007 |
| 7264051 | Methods of using partitioned, coated particulates Methods of treating a portion of a subterranean formation comprising: providing partitioned, coated particulates that comprise particulates, an adhesive substance, and a partitioning agent, and wherein the adhesive substance comprises an aqueous tackifying agent or ... | 09/04/2007 |
| 7264052 | Methods and compositions for consolidating proppant in fractures Improved methods and compositions for consolidating proppant in subterranean fractures are provided. In certain embodiments, the hardenable resin compositions may be especially suited for consolidating proppant in subterranean fractures having temperatures above abo... | 09/04/2007 |
| 7261156 | Methods using particulates coated with treatment chemical partitioning agents Methods of treating a portion of a subterranean formation comprising: providing partitioned, coated particulates that comprise particulates, an adhesive substance, and a partitioning agent, and wherein the partitioning agent comprises a subterranean treatment chemic... | 08/28/2007 |
