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| Number | Title | Issue Date |
| 8394743 | Process fluid A water-based, shear-thinning process fluid comprises bentonite, aluminum hydroxide particles, and salt. The median diameter (by weight) of the aluminum hydroxide particles does not exceed 2 μm. ... | 03/12/2013 |
| 8309497 | High performance drilling fluids with submicron-size particles as the weighting agent Drilling fluids comprising a carrier fluid; a weighting agent that comprises sub-micron precipitated barite; a particle having a specific gravity of greater than about 2.6; and, a bridging agent that is not the submicron-precipitated barite or the particle. The weig... | 11/13/2012 |
| 8252729 | High performance drilling fluids with submicron-size particles as the weighting agent Methods and compositions utilizing a drilling fluid comprising sub-micron precipitated barite having a weight average particle diameter below about 1 micron. Methods include a method comprising circulating a drilling fluid in a well bore, wherein the drilling fluid ... | 08/28/2012 |
| 8143196 | Ceramic microspheres for cementing applications A method and apparatus for manufacturing ceramic microspheres from industrial slag. The microspheres have a particle size of about 38 microns to about 150 microns. The microspheres are used to create a cement slurry having a density of at least about 11 lbs/g. The r... | 03/27/2012 |
| 8138126 | Compositions and methods for water control and strengthening unconsolidated formations The present invention relates, in general, to subterranean fluids, and more particularly, to subterranean drilling fluids that may be useful for reducing the production of water from a portion of a subterranean formation and/or stabilizing an unconsolidated portion ... | 03/20/2012 |
| 8034749 | Aerogels effective to reduce drilling fluid density Use of aerogels reduce the density of system fluids useful during drilling operations and system fluids comprising aerogels. ... | 10/11/2011 |
| 7977281 | Methods for minimizing the amount of graphite particles used during drilling operations Methods for minimizing the amount of graphite particles used during drilling operations, the methods comprise performing drilling operations using a drilling fluid system having effective rheological and fluid loss control properties, the drilling fluid system compr... | 07/12/2011 |
| 7964538 | Homogenous synthetic mud-to-cement cementing glasses A synthetic glass family in the quaternary phase field of CaO—SiO2-Al2O3-MgO (CSAM) with hydraulic and pozzolanic properties for use in differing applications in the gas and oil well cementing area. A method of making a mud-to-cement (MTC) slurry and a method for ... | 06/21/2011 |
| 7884055 | Ceramic microspheres for cementing applications A method and apparatus for manufacturing ceramic microspheres from industrial slag. The microspheres have a particle size of about 38 microns to about 150 microns. The microspheres are used to create a cement slurry having a density of at least about 11 lbs/g. The r... | 02/08/2011 |
| 7538074 | 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 coated onto the colloidal particle during the comminution process of forming the p... | 05/26/2009 |
| 7507692 | Methods for reducing circulation loss during drilling operations A method for reducing circulation loss during drilling operations, the method comprising: performing drilling operations using a water-based drilling fluid system comprising a first amount of water insoluble particulate; providing the drilling fluid system with a se... | 03/24/2009 |
| 7501385 | Compositions and methods for water control and strengthening unconsolidated formations The present invention relates, in general, to subterranean fluids, and more particularly, to subterranean drilling fluids that may be useful for reducing the production of water from a portion of a subterranean formation and/or stabilizing an unconsolidated portion ... | 03/10/2009 |
| 7449431 | Additive for increasing the density of a fluid for casing annulus pressure control A method of controlling the pressure of a casing annulus in a subterranean well that includes injecting into the casing annulus a composition including a base fluid and a polymer coated colloidal solid material. The polymer coated colloidal solid material includes: ... | 11/11/2008 |
| 7441609 | Method of decreasing the disintegration of shale-containing cuttings and drilling fluid therefor The invention provides a method of enhancing the recovery of shale-containing cuttings during the drilling of a borehole in a shale-containing subterranean formation which comprises adding to the drilling fluid circulating in the borehole a finely ground, very spari... | 10/28/2008 |
| 7431106 | Drilling method A method of reducing formation breakdown during the drilling of a wellbore which method comprises: (a) circulating a drilling mud in the wellbore comprising (i) an aqueous or oil based fluid, (ii) at least one fluid loss additive at a concentration effective to achi... | 10/07/2008 |
| 7427582 | Internal breaker A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as m... | 09/23/2008 |
| 7393813 | Water-based drilling fluids using latex additives A water-based drilling fluid having a polymer latex capable of providing a deformable latex film on at least a portion of a subterranean formation has been discovered to provide reduced drilling fluid pressure invasion when used to drill in shale formations for hydr... | 07/01/2008 |
| 7353870 | Methods of using settable compositions comprising cement kiln dust and additive(s) The present invention provides settable compositions that comprise water and cement kiln dust. The settable compositions optionally may comprise an additive that comprises at least one of the following group: fly ash; shale; slag cement; zeolite; metakaolin; and com... | 04/08/2008 |
| 7351681 | Well bore servicing fluids comprising thermally activated viscosification compounds and methods of using the same Well bore servicing fluids are provided that include a thermally activated viscosification compound. Further, methods of servicing a well bore are provided that include displacing such a servicing fluid into the well bore, wherein a viscosity of the servicing fluid ... | 04/01/2008 |
| 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 permeable zones may be sealed by passing the plugging composition and wate... | 04/01/2008 |
| 7343986 | Drilling fluids This invention relates to drilling fluids, to drilling lubricants for such drilling fluids and to methods of drilling wells, particularly oil and/or gas wells using such drilling fluids. In particular, the invention relates to the inclusion of lubricants which affor... | 03/18/2008 |
| 7341103 | Compositions and methods for treating subterranean formations with liquefied petroleum gas The present invention relates to gelled fluids and methods for using liquefied petroleum gas in subterranean operations. More particularly, the present invention relates to servicing fluids that comprise gelled liquefied petroleum gas or servicing fluids that compri... | 03/11/2008 |
| 7338922 | Process fluid A water-based, shear-thinning process fluid comprises bentonite, aluminium hydroxide particles, and salt. The median diameter (by weight) of the aluminium hydroxide particles does not exceed 2 μm. ... | 03/04/2008 |
| 7338925 | Zeolite compositions having enhanced compressive strength Wellbore treating fluids that include zeolite, an activator, and an organic acid or salt thereof are provided. ... | 03/04/2008 |
| 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 |
| 7338923 | Settable drilling fluids comprising cement kiln dust Settable drilling fluids that comprise an aqueous-based drilling fluid and cement kiln dust. Methods of cementing in a subterranean formation that comprise providing a settable drilling fluid comprising an aqueous-based drilling fluid and cement kiln dust, introduci... | 03/04/2008 |
| 7335252 | Lightweight settable compositions comprising cement kiln dust Settable compositions that comprise water, CKD, and microspheres, wherein the lightweight settable composition has a density less than about 13 pounds per gallon. Methods of cementing that comprise providing a lightweight settable composition having a density less t... | 02/26/2008 |
| 7332026 | Cementitious compositions containing interground cement clinker and zeolite Methods and compositions for wellbore treating fluids, especially cementitious compositions that include interground cement clinker and zeolite, with and without gypsum. ... | 02/19/2008 |
| 7326291 | Cementitious compositions containing interground cement clinker and zeolite Methods and compositions for wellbore treating fluids, especially cementitious compositions that include interground cement clinker and zeolite, with and without gypsum. ... | 02/05/2008 |
| 7323434 | Electropositive production well treating fluid and method of preparing the same An electropositive and water-based production well treating fluid system exhibits electropositivity by using a cationic viscosifier meanwhile matched with a cationic fluid loss additive and, optionally, contains a mud-building agent, an electrical stabilizing agent,... | 01/29/2008 |
| 7311158 | Silicate-containing additives for well bore treatments and associated methods The present invention relates to methods and compositions for use in subterranean operations. More particularly, the present invention relates to additives comprising one or more silicates used to treat tar resident in a well bore, and methods of use. In one embodim... | 12/25/2007 |
| 7303013 | Method for reducing density of a system fluid and for performing drilling operations using a reduced density system fluid comprising aerogel Methods for reducing density of a system fluid and performing drilling operations using a reduced density system fluid comprising aerogel. ... | 12/04/2007 |
| 7303015 | Cementitious compositions containing interground cement clinker and zeolite Methods and compositions for wellbore treating fluids, especially cementitious compositions that include interground cement clinker and zeolite, with and without gypsum. ... | 12/04/2007 |
| 7297662 | Method and composition for inhibiting lost circulation during well operation A method and drilling fluid additive composition are provided for reducing lost circulation and seepage loss when synthetic or oil based drilling fluid is used. The method includes injecting drilling fluid and 1 to 50 pounds per barrel of a loss control additive hav... | 11/20/2007 |
| 7284611 | Methods and compositions for controlling lost circulation in subterranean operations A lost circulation composition, that comprises a first portion of particles having a weight mean particle size of less than about 20 microns, a second portion of particles having a weight mean particle size in the range of from about 25 microns to about 400 microns,... | 10/23/2007 |
| 7284609 | Methods of using settable spotting compositions comprising cement kiln dust Exemplary embodiments include settable spotting compositions that comprise cement kiln dust and associated methods of use. Exemplary embodiments also include methods that comprise providing a settable spotting composition comprising cement kiln dust; introducing the... | 10/23/2007 |
| 7285515 | Compositions of oil-based biodegradable drilling fluids and process for drilling oil and gas wells Compositions of oil-based biodegradable drilling fluids are described, the compositions comprising an oil phase composed by methyl esters of soybean oil fatty acids, an aqueous phase finely dispersed in the oil phase by specific emulsifiers and several other additiv... | 10/23/2007 |
| 7272912 | Method and apparatus for converting spent water-based drilling muds into fertile indigenous top soil A method and apparatus for converting spent water-based drilling mud into fertile indigenous top soil at a well site or location. The fertile indigenous top soil is produced by the steps of: admixing, at a well site, effective amou... | 09/25/2007 |
| 7273832 | Alkali metal tungstate compositions and uses thereof Fluids, such as completion fluids, containing at least one alkali metal tungstate and optionally at least one chelating agent are described. Methods of removing a filter cake from a well bore surface, which may include one or more alkaline earth metal sulfates, is a... | 09/25/2007 |
| 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 discloses methods of a forming a hardened mass comprising providing a settab... | 07/24/2007 |
