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| Number | Title | Issue Date |
| 8162057 | Radiation-induced thickening for set-on-command sealant compositions and methods of use The present invention includes methods relating to the setting of fluids or slurries in a wellbore. In one embodiment, a method of isolating a portion a wellbore by preparing a sealant composition comprising a fluid component and a polymeric additive component, plac... | 04/24/2012 |
| 8162058 | Slag compositions and methods of use Methods and compositions are provided that relate to cementing operations. Methods and compositions that include a latex strength enhancer for enhancing the compressive strength of slag compositions. ... | 04/24/2012 |
| 8162056 | Application of degradable fibers in invert emulsion fluids for kill pills A method of treating a subterranean formation includes pumping into a cased, perforated wellbore that intersects the formation an invert emulsion kill fluid, the invert emulsion kill fluid comprising: an oleaginous continuous phase; a non-oleaginous discontinuous ph... | 04/24/2012 |
| 8157009 | Cement compositions and associated methods comprising sub-micron calcium carbonate and latex Methods and compositions are provided that relate to cement compositions and methods comprising sub-micron calcium carbonate and latex. An embodiment includes a method of cementing in a subterranean formation. The method may comprise introducing a cement composition... | 04/17/2012 |
| 8100180 | Method of servicing a wellbore with a sealant composition comprising solid latex A method of servicing a wellbore comprising placing a sealant composition comprising solid latex into the wellbore. ... | 01/24/2012 |
| 8096359 | Method of cementing using polymeric retarder Set retarders of copolymers of at least one polymerizable ethylenically unsaturated monomer and at least one alkoxylated sulfate, phosphate or ketonic salt are capable of delaying the hardening of a cementitious slurry when introduced into a subterranean formation u... | 01/17/2012 |
| 8091642 | Cement composition for carbon dioxide supercritical environment A cement composition resistant to carbon dioxide includes a hollow element for trapping carbonation products. The hollow element can be hollow spherical or quasi spherical particles including cenospheres, sodium-calcium-borosilicate glass microspheres, silica-alumin... | 01/10/2012 |
| 8056631 | Cementitious compositions having coarse ground blast furnace slag and methods of making and using the same A cementitious composition capable of forming a high, early-phase strength cement may comprise construction grade cement and ground blast furnace slag, the ground blast furnace slag having a Blaine fineness less than about 250 m2/kg. The cementitious comp... | 11/15/2011 |
| 8020618 | Solid gas migration control additives based on latex powders for cementing applications Solid latex powders are employed as additives to control gas migration during the cementation of subterranean wells. Preferably, the latex additives are based on vinyl-acetate or styrene-butadiene based polymers. The additives are particularly useful in low-temperat... | 09/20/2011 |
| 7975764 | Emulsion system for sand consolidation A sand consolidation system and a method for use of the system is provided. The consolidation system includes an emulsion having an oil phase and an aqueous phase, wherein the emulsion contains a source of insoluble silica particles and a source of calcium hydroxide... | 07/12/2011 |
| 7954549 | Methods of using colloidal silica based gels Methods of controlling flow through a subterranean formation may include providing a cement slurry, a colloidal silica, and an activator. The methods may include introducing the cement slurry, the colloidal silica, and the activator into a portion of a well bore tha... | 06/07/2011 |
| 7946343 | Versatile additives for well cementing applications The present invention provides a versatile additive for improving the properties of a cement slurry made with portland cement and to be utilized in well cementing, said versatile additive comprising type of silicates and/or borates that inhibit gelation occurring wi... | 05/24/2011 |
| 7896076 | Rheology modifier for cement slurries Low-density cement slurries for cementing subterranean wells are described that comprise alkali swellable polymers as thickening agents that provide slurry stability. The polymers are preferably added as liquid latex dispersions, and may also comprise a surfactant t... | 03/01/2011 |
| 7866394 | Compositions and methods of cementing in subterranean formations using a swelling agent to inhibit the influx of water into a cement slurry Methods of cementing in subterranean formations, cement compositions, and methods for making the compositions are provided. A cement slurry is passed into a subterranean formation, and a swelling agent is passed into the subterranean formation to reduce an amount of... | 01/11/2011 |
| 7857054 | Degradable cement compositions containing degrading materials and methods of cementing in wellbores A temporary matrix is provided in treating a subterranean formation by providing a composition comprising a matrix forming material and a matrix degrading material. The matrix degrading material is capable of degrading the matrix after a period of time when subjecte... | 12/28/2010 |
| 7854262 | Sorel cement compositions, amine phosphono retarders, and associated methods Methods of cementing comprising introducing a cement composition into a subterranean formation, wherein the cement composition comprises a Sorel cement and an amine phosphono retarder; and allowing the cement composition to set. ... | 12/21/2010 |
| 7836953 | Carbonaceous extenders for flexible cement A flexible cement stable at high temperatures contains an extender that is a finely ground bituminous coal and/or a finely ground coke prepared from coal and/or liquid hydrocarbons. Preferred cokes are made from bituminous coals and from petroleum, heavy oil, and oi... | 11/23/2010 |
| 7836954 | Cement compositions comprising stevia retarders Methods and compositions that include a method of cementing comprising providing a cement composition comprising water, a hydraulic cement, and an additive comprising at least one additive selected from the group consisting of a stevia retarder and inulin; placing t... | 11/23/2010 |
| 7823642 | Control of fines migration in well treatments A treatment fluid that can be used for treating a subterranean formation penetrated by a wellbore is prepared from a primary treatment fluid component and an emulsion component mixed with the primary treatment fluid component. The emulsion component has an oil phase... | 11/02/2010 |
| 7806183 | Well treatment compositions and methods utilizing nano-particles Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations th... | 10/05/2010 |
| 7789150 | Latex compositions comprising pozzolan and/or cement kiln dust and methods of use The present invention includes methods and compositions that include a latex, and at least one of a natural pozzolan or cement kiln dust. An embodiment includes a method comprising: placing a latex composition in a subterranean formation, wherein the latex compositi... | 09/07/2010 |
| 7784542 | Cement compositions comprising latex and a nano-particle and associated methods Methods and compositions are provided that may comprise cement, a nano-particle, latex, and water. An embodiment of the present invention includes a method of cementing in a subterranean formation. The method may include introducing a cement composition into the sub... | 08/31/2010 |
| 7757766 | Density-matched suspensions and associated methods Of the many compositions and methods provided herein, an example method includes a method of treating a subterranean formation that comprises combining components comprising water and a density-matched suspension to prepare a treatment fluid, wherein the density-mat... | 07/20/2010 |
| 7748454 | Gelation inhibiting retarders for highly reactive calcium silicate based binder compositions and methods of making and using same A method of servicing a wellbore comprising placing in the wellbore a composition comprising a non-API compliant reactive calcium silicate based hydraulic binder and at least one gelation inhibiting retarder, and allowing the composition to set. A method of servicin... | 07/06/2010 |
| 7726400 | Compositions and methods for treating lost circulation A cement system for use in treating lost circulation includes a slurry of cement, water and a super-absorbent polymer which absorbs free water in the slurry to form a gel—ore preferably a solid-like structure—when placed in the well, and which releases the absor... | 06/01/2010 |
| 7712530 | Pre-stressed annular sealant and method of creating a durable seal in a well bore annulus A pre-stressed annular sealant and method of creating a durable seal in a well bore annulus which is based on hydraulic cement that is designed to be easily pumped and placed into a casing-wellbore annulus, to set into a hardened mass, and to then undergo post-set c... | 05/11/2010 |
| 7690427 | Sand plugs and placing sand plugs in highly deviated wells Methods of isolating portions of a subterranean formation adjacent to a highly deviated well bore having a downstream end and an upstream end and substantially filling a first zone with a sand plug comprising lightweight particulates having a specific gravity of bel... | 04/06/2010 |
| 7677313 | Method for controlling water influx into wellbores by blocking high-permeability channels A method of blocking a high permeability channel in communication with a wellbore, including the steps of introducing an amount of an unreinforced gel into the high permeability channel via the wellbore and introducing an amount of a reinforced gel comprising an amo... | 03/16/2010 |
| 7650940 | Cement compositions comprising particulate carboxylated elastomers and associated methods Methods of cementing comprising: providing a cement composition comprising water, a cement, and a particulate elastomer comprising a carboxy group; and allowing the cement composition to set. Cement compositions comprising water, a cement, and a particulate elastome... | 01/26/2010 |
| 7647970 | Self-sealing well cement composition A cement composition is provided including a cement and a low reactivity particle coated with a swellable polymeric material. The low reactivity particle is coated with a swellable polymeric material at a concentration of about 10 weight percent to about 50 weight p... | 01/19/2010 |
| 7607484 | Foamed cement compositions comprising oil-swellable particles and methods of use Of the many compositions and methods provided herein, an embodiment of a method comprises introducing a foamed cement composition into a subterranean formation, wherein the foamed cement composition comprises: a cementitious component; a foaming and stabilizing surf... | 10/27/2009 |
| 7607483 | Sealant compositions comprising colloidally stabilized latex and methods of using the same Sealant compositions comprising a colloidally stabilized latex and methods of using the same to service a wellbore are provided. The sealant compositions may include: an aliphatic conjugated diene monomer; an additional monomer comprising a non-aromatic unsaturated ... | 10/27/2009 |
| 7530395 | Methods of using wellbore servicing compositions A method of servicing a wellbore comprising placing in the wellbore a composition comprising a calcium aluminate cement and at least one gelation inhibitor, and allowing the composition to set. A method of servicing a wellbore comprising adjusting the thickening tim... | 05/12/2009 |
| 7530396 | Self repairing cement compositions and methods of using same A method of servicing a wellbore comprising placing a cement composition comprising a cementitious material, water, and an elastomeric material comprising a bonding polar group into a wellbore, and allowing the cement composition to set to form a set cement, wherein... | 05/12/2009 |
| 7500520 | Method of cementing well bores A method of cementing an oil well with a silicate-forming gel solution and an acid-soluble cement separated by a polymeric spacer which permits solubilization and removal of the cement by HCl in the event of a fracture in subterranean formation and the need for wate... | 03/10/2009 |
| 7478675 | Extended settable compositions comprising cement kiln dust and associated methods An embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive, wherein the extended settable... | 01/20/2009 |
| 7458424 | Tight formation water shut off method with silica gel A delayed gelling system useful in conformance control in the production of petroleum from subterranean formations, especially low permeability formations, is disclosed. The gelling system comprises a basic silica sol, an activator comprising a hydroxyl donor, and a... | 12/02/2008 |
| 7448450 | Drilling and cementing with fluids containing zeolite Methods and compositions for cementing, especially drilling fluids that comprise zeolite and a carrier fluid, and cementing compositions made with such drilling fluids. ... | 11/11/2008 |
| 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 |
| 7431086 | Methods of servicing a wellbore with compositions comprising quaternary material and sorel cements A method of servicing a wellbore in contact with a subterranean formation comprising viscosifying a cement composition comprising a metal oxide and a soluble salt, placing the viscosified cement composition in the wellbore, and allowing the composition to set. A met... | 10/07/2008 |
