| Patent application number | Description | Published |
|---|
| 20090183876 | Control of the Properties of Cement Slurries With Optimized Polymers Combination - The invention discloses a cement slurry composition for cementing a well comprising: an hydraulic cement, water and a combination made of a hydroxyethyl cellulose and an acrylamido-methyl-propane sulfonate-acrylamide copolymer. | 07-23-2009 |
| 20100071893 | Polymers and Nanoparticles Formulations With Shear-Thickening and Shear-Gelling Properties for Oilfield Applications - The invention provides a composition having shear-gelling and shear-thickening properties based on a amphiphilic polymer combined with hydrophilic particles and polyethyleneoxide. | 03-25-2010 |
| 20110024114 | CEMENT COMPOSITION COMPRISING MIXTURE OF ORGANIC AND INORGANIC FIBRES FOR CURING SEVERE LOSSES ESPECIALLY IN THE RESERVOIR SECTION - Disclosed is a method for controlling loss circulation and simultaneously strengthening a weakened formation when drilling for oil. This invention relates to the permeable subterranean formation and natural and induced fractured formations that encounter severe losses and their treatment with a composition composed of long rigid organic fibre with different type of fibres selected from a category of organic or inorganic fibres along with different particle sizes that orientation of fibres and packing of the solids shows a good blockage effect to resist the loss and later the final set material develop required compressive strength to cure those losses and strengthening the structure. | 02-03-2011 |
| 20110042088 | CEMENT COMPOSITION CONTAINING INORGANIC AND ORGANIC FIBERS - A cement composition, comprises a mixture of a blend of materials including cement and/or micro cement, calcium carbonate, organic fibres, and inorganic fibres; and water; wherein the composition forms a cement that is at least partially soluble in acid and/or water. A method of treating a well, comprises pumping the composition into the well, allowing the cement to set, and treating the set cement so that it is partially to completely dissolved. In case of partial dissolution the residue in time is degradable. The inorganic fiber can be used in the traditional cementing in all stages of the well construction to defeat partial losses and improve the set properties of the final set cement. | 02-24-2011 |
| 20110108274 | ADDITIVE FOR WELL CEMENTING APPLICATIONS - An additive for Portland-cement slurries comprises a liquid silicate absorbed into a solid porous medium. The additive is incorporated in slurries designed for well-cementing applications. The liquid silicate functions as a retarder aid and dispersant when added to slurries for use at temperatures above about 85° C. The resulting solid product allows use of the liquid silicate in well-cementing operations as if it were a dry additive. | 05-12-2011 |
