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Class 507/277 - Inorganic component is soluble in the well treating medium


Subclass of Class 507 - Earth boring, well treating, and oil field chemistry
Definition: Compositions wherein the inorganic component is soluble
No. of patents: 220
Last issue date: 10/04/2011


1            
NumberTitleIssue Date
8030254System, method, and apparatus for utilizing divalent brines in viscosified well treatment fluids
A method includes providing a wellbore treatment fluid having a divalent brine and an amount of polymer and lowering a pH value of the treatment fluid. The method further includes retaining the treatment fluid at the lower pH value until the polymer achieves a prima...
10/04/2011
7829510Sand aggregating reagents, modified sands, and methods for making and using same
A composition for treating solid materials is disclosed, where the treating compositions coats surfaces or portions of surfaces of the solid materials changing an aggregation or agglomeration propensity of the materials. Treated solid materials are also disclosed. T...
11/09/2010
7622430Delayed-gelation solution
The invention concerns an aqueous delayed-gelation solution for use in hydrocarbon wells. According to the invention, the aqueous delayed-gelation solution a dissolved metal salt which, in use, hydrolyses to form a gel, wherein the solution contains suspended inorga...
11/24/2009
7419938Process for treating an oil well
A method of treating a subterranean formation, the method comprising: (A) injecting down a well bore into the formation an admixture of (a) an emulsion having an internal aqueous phase comprising a water-soluble oil or gas field chemical or an aqueous dispersion of ...
09/02/2008
7392846Silicate-containing additives for well bore treatments and associated methods
Methods and compositions for use in subterranean operations, and more particularly, additives comprising one or more silicates used to treat tar resident in a well bore, and methods of use, are provided. In one embodiment, the method comprises a method of treating t...
07/01/2008
7384894Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications
Improved fluid loss control additives for use in cement compositions are provided. The improved fluid loss control additives and cement compositions are suitable for use in surface and subterranean applications. The improved fluid loss control additives and cement c...
06/10/2008
7384893Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications
Cement compositions comprising an improved fluid loss control additive are provided. The cement compositions are suitable for use in surface and subterranean applications. The cement compositions may be particularly useful for subterranean well completion and remedi...
06/10/2008
7341107Viscoelastic acid
An acidic viscoelastic surfactant fluid composition is formulated with an acid, for example hydrochloric acid, a cationic surfactant, for example a quaternary amine, and a break-enabling salt, for example NH4Cl. The fluid composition has low viscosity as ...
03/11/2008
7338925Zeolite 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
7325603Methods of well treatment
A method is disclosed relating to the treatment of a hydrocarbon well, which method comprises administering down a bore hole thermophilic microorganisms capable of generating a well treatment chemical, in particular wherein the bore hole is a producer bore hole and ...
02/05/2008
7316275Well treating compositions containing water superabsorbent material and method of using the same
A well treating composition containing a polysaccharide-based water-superabsorbent material has particularly applicability as a thermal insulating, fracturing or acid stimulation fluid. The water-superabsorbent material is capable of absorbing, at a minimum, its own...
01/08/2008
7296627Method for simultaneous removal of asphaltene, and/or paraffin and scale from producing oil wells
A method for cleaning oil wells to increase the flow of oil thereof by use of a unique aqueous cleaning emulsion comprising of water, hydrocarbon solvent, detergent and mineral acid. This one step method provides for the simultaneously cleaning/removal of asphaltine...
11/20/2007
7288505Fluid system having controllable reversible viscosity
This Invention relates to methods of treating a subterranean hydrocarbons reservoir comprising contacting the formation with a treating fluid comprising an aqueous solution, an acid, a surfactant acting as gelling agent essentially consisting of erucylamidopropyl be...
10/30/2007
7284608Casing strings and methods of using such strings in subterranean cementing operations
Improved casing strings, and methods of using improved casing strings in subterranean operations, are provided. An example of a method is a method of cementing a pipe string in a subterranean formation. Another example of a method is a method of cementing a pipe str...
10/23/2007
7275596Method of using degradable fiber systems for stimulation
A method for minimizing the amount of metal crosslinked viscosifier necessary for treating a wellbore with proppant or gravel is given. The method includes using fibers to aid in transporting, suspending and placing proppant or gravel in viscous carrier fluids other...
10/02/2007
7273832Alkali 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
7268100Shale inhibition additive for oil/gas down hole fluids and methods for making and using same
An under-balanced drilling fluid additive is disclosed which reduces reactive shale and/or clay swelling during under-balanced drilling operations, where the additive includes an effective amount of a choline salt. A method for under-balanced drilling is also disclo...
09/11/2007
7262154Methods and compositions for breaking viscosified fluids
Improved methods for treating and for fracturing subterranean formations and the fluid compositions are provided. The viscosity of a treating fluid containing gelling agents is broken, even at temperatures of about 250° F. and lower, utilizing an oxidizing breaker ...
08/28/2007
7237609Methods for producing fluids from acidized and consolidated portions of subterranean formations
A method of stimulating and stabilizing an area of a subterranean formation comprising placing an acid fluid into an area of a subterranean formation and allowing the acid to at least partially dissolve a portion of the area of the subterranean formation; placing a ...
07/03/2007
7223719Breaker composition and process
A process for reducing the viscosity of fracturing fluids in downhole oilfield operations is provided. The process comprises contacting a sulfamate stabilized, bromine-based breaker with an aqueous polysaccharide fracturing fluid, with the breaker present in an amou...
05/29/2007
7216704Methods and compositions for breaking viscosified fluids
Improved methods for treating and for fracturing subterranean formations and the fluid compositions are provided. A method presented herein is a method of reducing the viscosity of a viscosified treatment fluid that comprises providing a viscosified treatment fluid ...
05/15/2007
7211550Compositions for controlling scaling and completion fluids
An aqueous-based composition containing cesium formate and at least one chelating agent is described. Methods of removing scaling deposits, which may include alkaline earth metal sulfates, present on surfaces, including porous media, such as alkaline earth metal sul...
05/01/2007
7204312Compositions and methods for the delivery of chemical components in subterranean well bores
The present invention relates to the delivery of a plurality of chemical components in well bore applications. More particularly, this invention relates to delivery capsules and methods of using such delivery capsules for facilitating the delivery of at least a plur...
04/17/2007
7196040Microcapsule well treatment
A material and a device for releasing chemicals in a fluid environment is disclosed, and a method for releasing substances into downhole fluid environments. The invention also relates to materials for sand control and hydraulic fracturing. The substance release devi...
03/27/2007
7196039Methods of reducing fluid loss in a wellbore servicing fluid
Methods of reducing the fluid loss from a wellbore servicing fluid include combining a terpolymer with the wellbore servicing fluid to reduce the fluid loss from the fluid, followed by displacing the fluid into a wellbore. In an embodiment, the following monomers ar...
03/27/2007
7192908Composition and method for treating a subterranean formation
An aqueous oilfield treatment fluid containing a chelating agent and an HF source is described. This fluid is effective at dissolving siliceous materials such as clays and keeping the dissolved materials in solution. In particular it is effective at preventing re-pr...
03/20/2007
7188676Method for displacing oil base drilling muds and/or residues from oil base drilling mud using water-in-oil emulsion
Fluid producing wells may be treated with a water-in-oil emulsion for the removal or inhibition of unwanted solid particulates, including pipe dope, asphaltenes and paraffins. Such emulsions are of particular applicability in the displacement of oil base drilling mu...
03/13/2007
7186673Stability enhanced water-in-oil emulsion and method for using same
A method for enhancing the stability of a water-in-oil emulsion pretreating at least a portion of the oil prior to emulsification. The pretreatment step may consist of adding polymers to the oil, biotreating the oil, photochemically treating the oil, or combinations...
03/06/2007
7188058Method of load and failure prediction of downhole liners and wellbores
A dynamic range relaxation algorithm is applied to simulate borehole failure under a variety of stress conditions. The borehole and its neighborhood are modeled by a number of regions by a plurality of interconnected nodes. The bonds between the nodes may be modeled...
03/06/2007
7168489Orthoester compositions and methods for reducing the viscosified treatment fluids
In one embodiment, the present invention provides a method of reducing the viscosity of a viscosified treatment fluid comprising contacting the viscosified treatment fluid with an acid generated from an orthoester composition that comprises an orthoester. In another...
01/30/2007
7166560Generating Acid Downhole in Acid Fracturing
An acid fracturing method is provided in which the acid is generated in the fracture by hydrolysis of a solid acid-precursor selected from one or more than one of lactide, glycolide, polylactic acid, polyglycolic acid, a copolymer of polylactic acid and polyglycolic...
01/23/2007
7163056Esterquat acidic subterranean treatment fluids and methods of using esterquats acidic subterranean treatment fluids
The present invention relates to acidic treatment fluids that comprise an acid fluid and an ester-containing quaternary ammonium compound (“esterquat”) and methods of their use. One embodiment of the present invention provides a method of inhibiting metal corros...
01/16/2007
7159656Methods of reducing the permeabilities of horizontal well bore sections
Methods of temporarily reducing the permeability of one or more selected sections of a subterranean formation penetrated by a horizontal well bore and the flow of water or water and hydrocarbons or hydrocarbons therefrom are provided. The methods comprise the steps ...
01/09/2007
7159658Methods and compositions for treating subterranean zones
Methods and compositions for breaking treatment fluids utilized in the stimulation of a subterranean formation. ...
01/09/2007
7156174Contained micro-particles for use in well bore operations
The present invention relates to well bore operations, and more particularly, to contained micro-particles, and methods for using such contained micro-particles in cementing operations. An exemplary method of facilitating the use of micro-particles in a well bore fl...
01/02/2007
7151076Low residue well treatment fluids and methods of use
A low residue well treatment fluid comprises: an aqueous solvent; a gelling agent comprising one or more modified polysaccharides, the modified polysaccharides having hydrophilic groups; and a crosslinking composition. The fluid may optionally further comprise a gel...
12/19/2006
7150321Zeolite-containing settable spotting fluids
Methods and compositions for wellbore treating fluids, especially settable spotting fluids, that include zeolite and at least one carrier fluid. ...
12/19/2006
7148184Self-diverting foamed system
A method is given for diverting acids in matrix acidizing and acid fracturing. The acids are diverted with a diverting agent that is an energized or foamed acidic viscoelastic surfactant system that contains a viscoelastic surfactant that gels and increases in visco...
12/12/2006
7148185Viscoelastic surfactant fluids stable at high brine concentration and methods of using same
A viscous aqueous high density well treatment fluid composition stable at high temperature containing a surfactant and inorganic salts is described. Methods of preparing the fluid and increasing the stability and viscosity of the fluid are given. The fluid is useful...
12/12/2006
7144844Method of using viscoelastic vesicular fluids to enhance productivity of formations
A process for enhancing the productivity of a formation consists of introducing into the formation a viscoelastic fluid which contains at least one surfactant, at least one quaternary amine polyelectrolyte, water, and a non-aqueous solvent. The surfactant forms aggr...
12/05/2006
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