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8181702 Application of degradable fibers in invert emulsion fluids for fluid loss control  
A method of treating a subterranean formation including emplacing in a wellbore a fluid, comprising an oleaginous continuous phase, a non-oleaginous discontinuous phase, an emulsifier, at least one...
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...
8146654 Composition and method for using waxy oil-external emulsions to modify reservoir permeability profiles  
A waxy oil-external emulsion is provided for injection into a selected zone of a subsurface formation. The selected zone is typically a high permeability zone. The emulsion generally comprises oil,...
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...
8101812 Extraction of hydrocarbons from hydrocarbon-containing materials  
Solvents and methods are provided for extracting a hydrocarbon fraction from a solid, semi-solid, liquid or viscous liquid hydrocarbon-containing material.
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...
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...
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...
8020615 Truck-mounted pumping system for treating a subterranean formation via a well with a mixture of liquids  
An efficient truck-mounted injection system for injecting a combined aqueous or hydrocarbon-based liquid stream and a liquid carbon dioxide stream via a well into a subterranean formation.
8016040 Fluid loss control  
A fluid loss control method uses a fluid loss control pill in a well in advance of a completion operation. An embodiment of the fluid loss control pill comprises polyester solids that are...
8002038 Liquid carbon dioxide cleaning of wellbores and near-wellbore areas using high precision stimulation  
The invention relates to cleaning wellbores and the near wellbore areas adjacent to a hydrocarbon bearing formations and coal bed methane formations. In a particular aspect, the invention relates...
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...
8003581 Iron control agent  
An iron control agent capable of reducing ferric iron containing compounds to ferrous iron containing compounds in an acidic solution, such as one used for formation acidizing. The iron control...
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...
7959743 Lithium salts of fatty alcohol sulphates for cleaning boreholes, boring devices and borings  
The invention relates to a process of cleaning boreholes, boring equipment and borings with an aqueous cleaning of one more lithium salts of alkyl sulfates of formula (I): R—O—SO3−Li+ (I) in which...
7923416 Method of reducing the viscosity of hydrocarbon fluids  
This invention relates to methods for reducing the viscosity of hydrocarbon liquids encountered in petroleum operations. The method includes forming a low viscosity emulsion by contacting...
7918281 Method of treating flow conduits and vessels with foamed composition  
The annular surface between the tubing and casing of an oil or gas well as well as flow conduits and vessels may be contacted with a foamed treatment composition containing a gas, a foaming agent...
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...
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...
7897063 Composition for denaturing and breaking down friction-reducing polymer and for destroying other gas and oil well contaminants  
A composition and method for breaking down and denaturing friction-reducing compound introduced into the ground during the drilling of gas and oil wells and for destroying other contaminants and...
7833946 Water-based drilling fluid  
A water based drilling fluid contains as additive one or more alkyl ethoxylates having the formula RO(CH2CH2O)nH; wherein:R is a C16-22alkyl group (preferably R is aliphatic and more preferably R...
7721806 Automatic chemical treatment system with integral flush fluid dispenser and method for using the same  
A wellbore chemical treating system includes a pressure vessel for containing a treating chemical. The pressure vessel is closed to atmospheric pressure. A first controllably operated valve is...
7712533 Method for treating a subterranean formation with water-in-oil emulsion  
The permeability of a subterranean formation is improved by introducing into the formation a water-in-oil emulsion. Unwanted particulates deposited in the formation during the production of oil are...
7709421 Microemulsions to convert OBM filter cakes to WBM filter cakes having filtration control  
Single phase microemulsions improve the removal of filter cakes formed during drilling with oil-based muds (OBMs). The single phase microemulsion removes oil and solids from the deposited filter...
7703516 Stimulating oilfields using different scale-inhibitors  
Oilfields are stimulated by injecting an inflow stream of a fluid into an oil producing well linked to the oilfield, displacing the oil and recovering an outflow stream of fluid comprising the oil,...
7690431 Methods for controlling migration of particulates in a subterranean formation  
Methods comprising: providing a subterranean formation penetrated by a well bore wherein the well bore comprises perforated casing that comprises a plurality of perforations, providing an acidic...
7686081 Squeeze process for reactivation of well treatment fluids containing diatomaceous earth  
A process for fracturing a subterraneous formation in the production of an oil well is described. The process steps include injecting an initial charge of a mixture, the mixture being formed from...
7681638 Wellbore treatment for reducing wax deposits  
A method of reducing wax deposition in an oil wellbore tubing includes providing an aqueous bioslurry comprising at least one microbe capable of degrading paraffin wax at about 20-45° C. and a ...
7621333 Process to improve extraction of crude oil and installation implementing such process  
A hydrocarbon extraction process enabling an acceleration in the production of the productive zone of the oil deposit of a well and an increase in the cumulated quantity of hydrocarbons,...
7611208 Methods for constructing underground borehole configurations and related solution mining methods  
Disclosed are methods for solution mining of evaporite minerals, such as trona, comprising drilling an access well and at least two lateral boreholes; injecting a fluid; circulating the fluid...
7608571 Method for recovering crude oil from a subterranean formation utilizing a polyphosphate ester  
An aqueous fluid useful for the recovery of crude oil from a subterranean formation, including water and one or more organophosphorus materials and methods for using same.
7598209 Porous composites containing hydrocarbon-soluble well treatment agents and methods for using the same  
Composites containing a hydrocarbon-soluble well treatment agent may be supplied to a well using a porous particulate. Such well treatment agents may for example inhibit the formation of paraffins,...
7597148 Formation and control of gas hydrates  
Gas hydrates, particularly natural gas hydrates e.g. methane hydrates, may be formed and controlled within conduits and vessels by imparting energy to gas and water, for instance using agitation or...
7541315 Paraffin inhibitor compositions and their use in oil and gas production  
Disclosed are paraffin inhibitors prepared by admixing a polymer having the characteristic of inhibiting paraffin crystalline growth in formation fluid from oil and gas wells with a first solvent...
7503389 Method and apparatus for downhole artificial lift system protection  
A fluid conditioning system designed to be installed between the well perforation and the intake of a pump used to effect artificial lift is used to filter and chemically treat production fluids....
7500522 Fluid with asphaltene control  
Asphaltene control additives are added to base fluids which are introduced directly or indirectly into a hydrocarbon-bearing formation to mitigate asphaltene deposition in the formation which...
7497261 Method 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, and detergent. This one step method...
7493955 Well treating compositions for slow release of treatment agents and methods of using the same  
A composite of a well treatment agent adsorbed onto a water-insoluble adsorbent is useful in the treatment of oil and gas wells and may be introduced, as a well treatment fluid, with a carrier...
7481273 Method of using water-in-oil emulsion to remove oil base or synthetic oil base filter cake  
Fluid producing or injecting wells may be treated with a water-in-oil emulsion for the removal or inhibition of unwanted particulates, including pipe dope, asphaltenes and paraffins. In addition,...
7475730 Method of treating well with foamed composition  
The annular surface between the tubing and casing of an oil or gas well may be contacted with a foamed well treatment composition containing a gas, a foaming agent and a liquid well treatment...
7476644 Method and materials for hydaulic fracturing of wells  
Hydraulic fracturing of wells by injecting a degradable polymer phase as a fracturing fluid is provided. Composition and degree of polymerization of the degradable polymer and the selection of...
7464760 Inhibiting reservoir souring using a treated injection water  
A process for inhibiting souring in a hydrocarbon reservoir provides a feed water including a plurality of phosphorous constituents and having an elevated phosphorous concentration. At least some...
7455111 Compositions for treating a well penetrating a subterranean formation and uses thereof  
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...
7449664 Oil and gas well alloy squeezing method and apparatus  
Method and apparatus for melting a material and squeezing the melted material through casing perforations into a fault within the cement or formation of an oil or gas well. A heating tool carries...
7419937 Method for providing treatment chemicals in a subterranean well  
A method of delivering chemicals such as scale inhibitor into a wellbore producing fluids includes providing the chemicals, in a slow-release form, in a container located in the path of the...
7392846 Silicate-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...
7392845 Method of treating oil or gas well with biodegradable emulsion  
A biodegradable water-in-synthetic oil base emulsion, effective in the removal of filter cakes, consists of an external phase of a surfactant emulsified in a paraffinic base oil. The emulsion is...
7353873 Magnetic assemblies for deposit prevention and methods of use  
An apparatus and method for controlling and/or minimizing the formation or accumulation of unwanted deposits on the inside of fluid flow paths by employing at various locations along the path an...
7350572 Methods for controlling fluid loss  
A method of treatment of subterranean formations in which leakoff through natural fractures is controlled through the use of fibers. The method involves pumping a mixture of a formation treatment...
Matches 1 - 50 out of 278 1 2 3 4 5 6 >