Matches 1 - 50 out of 198 1 2 3 4 >


Match Document Document Title
8183179 System, method, and apparatus for acid fracturing with scale inhibitor protection  
A method for treating a subterranean formation includes forming a treatment fluid including a carrier fluid, a solid acid-precursor, and a solid scale inhibitor. The solid acid-precursor includes a...
8183184 Polyelectrolyte complexes for oil and gas applications  
A polyelectrolyte complex for the controlled release of an oil and gas field chemical selected from the group consisting of (a) a gel-forming or cross-linking agent, (b) a scale inhibitor, (c) a...
8158561 Scale and corrosion inhibitors for high temperature and pressure conditions  
The present invention relates to a method for inhibiting scale and corrosion in aqueous systems, for example, under high temperature and pressure conditions such as temperatures up to 250° C. ...
8138129 Scale inhibiting particulates and methods of using scale inhibiting particulates  
Scale-inhibiting particulates formed from a mixture of fly ash and a phosphonic acid curing agent wherein the fly ash is cured into a solid material by the contact with the phosphonic acid curing...
8129316 Method of creating a carbon dioxide hydrate  
A method of creating a carbon dioxide hydrate is disclosed. The preferred steps include supplying liquid carbon dioxide and a dissociation agent to a hydrocarbon hydrate, decomposing the...
8119573 Corrosion inhibitors  
Provided is an anticorrosive composition for use in aqueous salt solutions. The composition contains an antimony compound and at least two other components selected from morpholine derivatives,...
8101554 Well treatment comprising a polymer formed from a diallyl ammonium salt and a scale inhibitor  
The present invention provides a method for increasing the retention of a scale inhibitor within a hydrocarbon producing system (e.g. a subterranean formation), said method comprising contacting...
8097442 Laccases, nucleic acids encoding them and methods for making and using them  
The invention provides laccases, polynucleotides encoding these enzymes, the methods of making and using these polynucleotides and polypeptides.
8071511 Methods for stimulating oil or gas production using a viscosified aqueous fluid with a chelating agent to remove scale from wellbore tubulars or subsurface equipment  
A method for treating a wellbore tubular or subsurface completion equipment to help remove scale is provided. In general, the method comprises the steps of: (A) determining the likelihood of the...
8062586 Methods and compositions for inhibiting metal corrosion  
Methods and compositions are provided that inhibit the corrosion of metal surfaces by aqueous acid solutions. The inhibition is basically achieved by the addition of a reaction product of an alpha,...
8058211 Corrosion inhibitor intensifier compositions and associated methods  
Of the many methods and compositions provided herein, one method includes a method comprising contacting a metal surface with an acidic fluid comprising an aqueous base-fluid, an acid, a corrosion...
8048827 Kinetic gas hydrate inhibitors in completion fluids  
Gas hydrate formation in a well completion fluid in the annular space of a hydrocarbon producing well may be controlled by the incorporation of effective amounts of one or more low dose gas hydrate...
8047296 Method of transitioning to kinetic hydrate inhibitors in multiple tie-in well systems  
The technical challenges for a smooth transition between using both a thermodynamic hydrate inhibitor (THI) and a kinetic hydrate inhibitor (KHI) to simply using only the KHI in multiple tie-in gas...
8043996 Method for treatment of underground reservoirs  
A process is disclosed for treating an underground formation, which process comprises: (a) introducing into the underground formation a micellar dispersion comprising water, one or more organic...
8039422 Method of mixing a corrosion inhibitor in an acid-in-oil emulsion  
An acid-in-oil emulsion having a corrosion inhibitor as the external phase has been found to prevent downhole corrosion when acidizing carbonate formations to enhance hydrocarbon recovery.
8039421 Process using aloe for inhibiting scale  
A method is provided for inhibiting scale in a hydrocarbon system, including the steps of: providing a hydrocarbon system; providing an aloe-derived scale inhibitor; and mixing the aloe-derived...
8034748 Additives for inhibiting the formation of gas hydrates  
The present invention relates to an additive, and its use for inhibiting nucleation, growth and agglomeration of gas hydrates by adding an effective amount of an inhibitor to a multiphasic mixture...
8033334 Treating liquids in oil extraction  
A method of treating liquid, particularly an oil/water mixture, in an oil well pipe, wherein a radio frequency propagating electrical field is established in the liquid in the pipe cause the...
8003574 Inhibiting naphthenate solids and emulsions in crude oil  
Naphthenic acid solids and/or emulsions can be inhibited by introducing an additive to crude oil prior to or concurrent with the deprotonation of the naphthenic acids present in the crude oil. The...
8003575 Scale squeeze treatment systems and methods  
An aqueous composition for treating hydrocarbon wells contains (a) a scale inhibitor and (b) a viscoelastic surfactant, and further contains from 0 to less than 1% by weight of acid selected from...
8003573 Method for remediating flow-restricting hydrate deposits in production systems  
A method to remove hydrate plugs in a production system by passing a non-hydrate-forming or a hydrate-forming gas, which forms hydrates at a higher pressure than the existing hydrate, through the...
7994102 Method of treating an alloy surface with an alkyl sarcosinate  
An acid treatment composition is provided including a corrosion inhibitor and an optional corrosion inhibitor intensifier in an acidic solution. More specifically, the composition includes an...
7994103 Method for controlled placement of chemicals and composition useful for practicing same  
Disclosed is a method for introducing additives into formation fluid from an oil and gas well in or moving through equipment and systems located downstream from the oil and gas well. The method is...
7994099 Corrosion inhibitor compositions comprising an aldehyde and a thiol and/or an amine functionalized ring structure and associated methods  
Provided herein are methods and compositions that include a method comprising contacting a metal surface with an acidic fluid comprising a corrosion inhibitor that comprises a reaction product...
7989397 Methods and compositions relating to the reduction of volatile phosphorus from crude  
This invention relates to methods and compositions useful in treating crude sources, and more specifically, to methods and compositions useful in reducing the concentration of phosphorus in crude...
7977283 Method of minimizing or reducing salt deposits by use of a fluid containing a fructan and derivatives thereof  
The amount of crystallized salt in an oil and/or gas well may be minimized or reduced by use of a fructan, such as inulin, or a derivative as a salt block inhibitor. A preferred salt inhibitor is...
7968500 Gas hydrate protection with heat producing two-component gas hydrate inhibitors  
Methods and compositions useful in inhibiting the formation, growth, and/or maintenance of gas hydrates in a fluid mixture. The gas hydrate inhibitors comprise polyetheramines and acids that are...
7958939 Composition and method for producing a pumpable hydrocarbon hydrate slurry at high water-cut  
Embodiments of the invention relate to a process for providing a pumpable hydrate slurry in a hydrocarbon pipeline fluid mixture having a water-cut greater than about 50 volume percent. In one or...
7960314 Microemulsifiers and methods of making and using same  
A method comprising contacting a zwitterionic surfactant, co-surfactant, and water to form a microemulsifier, and contacting the microemulsifier with an oleaginous fluid under low shear conditions...
7951754 Environmentally friendly bis-quaternary compounds for inhibiting corrosion and removing hydrocarbonaceous deposits in oil and gas applications  
Environmentally friendly compounds for corrosion inhibition and hydrocarbonaceous deposit removal and methods using such compounds are disclosed and claimed. The compounds are derivatives of...
7942941 Pour point depressant additives for oil compositions  
The present invention generally relates to oil compositions, primarily to fuel oil and petroleum compositions produced there from susceptible to wax formation at low temperatures, to polymeric...
7939473 Low toxicity shale hydration inhibition agent and method of use  
A low toxicity composition and method of reducing the swelling of clay in well comprising circulating in the well a water-based fluid comprising a functionally effective concentration of the...
7915204 Scale squeeze treatment systems and methods  
An aqueous composition for treating hydrocarbon wells contains (a) a scale inhibitor and (b) a viscoelastic surfactant, and further contains from 0 to less than 1% by weight of acid selected from...
7902126 Well lost circulation additive, lost circulation treatment fluid made therefrom, method of minimizing lost circulation in a subterranean formation  
For lost circulation treatment, a lost circulation additive including a dry mixture of water soluble crosslinkable polymer, a crosslinking agent, and a reinforcing material of fibers and/or...
7902124 Self-diverting acid treatment with formic-acid-free corrosion inhibitor  
A method of treating a subterranean formation penetrated by a wellbore of a well having iron-containing components is carried out by introducing a treatment fluid into the wellbore of the well. The...
7902123 Microemulsion cleaning composition  
A cleaning composition including which comprises a surfactant and a propionate as co-surfactant and/or co-solvent. The composition can be used, for example, to clean drilling mud containing oils.
7893009 Polymers and their production and use as gas hydrate inhibitors  
The invention relates to polymers with a mean molecular weight of between 500 and 500,000 g/mol that can be produced as follows: A) reaction of a compound of formula 1, in which n stands for 0, 1...
7879767 Additives for hydrate inhibition in fluids gelled with viscoelastic surfactants  
An aqueous, viscoelastic fluid gelled with a viscoelastic surfactant (VES) is inhibited against hydrate formation with an effective amount of an additive that could be one or more halide salts of...
7858563 Wellbore treatment with hydrocarbon-responsive fluid containing oligomeric viscoelastic surfactant  
A treatment of a subterranean formation which contains a hydrocarbon-bearing zone, is carried out using a hydrocarbon-responsive fluid thickened with an oligomeric surfactant consisting of from 2...
7851413 Method for transporting hydrates in suspension in production effluents empolying a non-polluting additive  
In order to transport hydrates in suspension in a fluid comprising water, gas and a liquid hydrocarbon, at least one non-polluting composition consisting essentially of a mixture comprising at...
7851414 Microemulsion containing oil field chemicals useful for oil and gas field applications  
Useful microemulsions have corrosion inhibitors in the internal phase and an external phase, where the corrosion inhibitor has a surfactant property that helps define the microemulsion. For...
7833943 Microemulsifiers and methods of making and using same  
A method comprising contacting a zwitterionic surfactant, co-surfactant, and water to form a microemulsifier, and contacting the microemulsifier with an oleaginous fluid under low shear conditions...
7825073 Treatment fluids comprising clarified xanthan and associated methods  
Methods are provided that include a method comprising providing a viscosified treatment fluid comprising a base fluid and a gelling agent that comprises a clarified xanthan; and placing the...
7795183 Asphaltene Inhibition  
The present invention provides a method of asphaltene control in a hydrocarbon fluid, the method employing a composition comprising: a dispersant of formulae (I) or (II), including salts thereof,...
7781381 Method for controlling inorganic fluoride scales  
The productivity of hydrocarbons from hydrocarbon-bearing calcareous or siliceous formations is enhanced by contacting the formation with a well treatment composition which contains a hydrofluoric...
7776930 Methods for inhibiting naphthenate salt precipitates and naphthenate-stabilized emulsions  
Inhibiting naphthenate salts that can form precipitates or emulsions during crude oil production or processing. An effective amount of a naphthenate inhibitor, such as a hydrotrope, is provided...
7776931 Low dosage naphthenate inhibitors  
Low dosage naphthenate inhibitors, such as a surfactant or hydrotrope, delivered into production fluids for contact with mixtures of oil and water, such as in a hydrocarbon producing formation,...
7772160 Method for controlled placement of additives in oil and gas production  
Pellets can be injected into oil and gas production equipment that may contain stagnant or slow moving system fluids to treat the stagnant or slow moving system fluids to prevent conditions such as...
7737090 Aloe derived scale inhibitor  
A method is provided for inhibiting scale in a liquid hydrocarbon system, including the steps of: providing a liquid hydrocarbon system; providing an aloe-derived scale inhibitor; and mixing the...
7709419 Method and thermodynamic inhibitors of gas hydrates in water-based fluids  
The present invention relates to an additive that inhibits formation of gas hydrates for water-based drilling fluid, the additive having at least the following constituents (weight percent): a...
Matches 1 - 50 out of 198 1 2 3 4 >