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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...
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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.
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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,...
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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...
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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...
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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....
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7343978 |
Scale dissolver fluid
A scale dissolver fluid for dissolving scale in a subterranean hydrocarbon-bearing formation comprises an effective amount of a scale dissolver formulation and an effective amount of a surfactant...
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7318477 |
Method and composition for cleaning a well bore prior to cementing
The invention generally relates to a spacer system for cleaning a section of a subterranean well borehole and casing prior to cementing. The spacer system of the invention comprises a at least one...
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7318476 |
Automatic chemical treatment system with integral flush fluid dispenser
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...
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7285762 |
Sealing method and apparatus for oil and gas wells
Apparatus and method for melting material in the annulus of an oil or gas well and thereby sealing the annulus to prevent shallow gas leakage and the like. Conveniently, the material is positioned...
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7278488 |
Method of generating stable foam for oil and gas well cleanouts
A method of foam emulsion well cleanout for gas well. An emulsifier apparatus is provided having a compressed air inlet, a foaming solution inlet and a foam outlet. The compressed air inlet is...
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7264056 |
System and method for the mitigation of paraffin wax deposition from crude oil by using ultrasonic waves
A method for mitigating the deposition of wax on production tubing walls. The method comprises positioning at least one ultrasonic frequency generating device adjacent the production tubing walls...
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7243726 |
Enhancing a flow through a well pump
A method that is usable with a well includes injecting a chemical through a chemical injection line into a flow that passes through a well pump. The method includes controlling the injection of the...
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7234524 |
Subsea chemical injection unit for additive injection and monitoring system for oilfield operations
A system monitors and controls the injection of additives into formation fluids recovered through a subsea well. The system includes a chemical injection unit and a controller positioned at a...
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7234523 |
Hydraulic friction fluid heater and method of using same
A method and apparatus for heating a portion of a subsea structure is provided. The method includes pumping a fluid through a length of tubing such that the temperature of the fluid increases. The...
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7216712 |
Treatment of oil wells
Hydrocarbon solids are removed from an oil well by feeding into the oil well a composition comprising at least 40 vol. % dense phase carbon dioxide and at least 30 vol. % of a C 1 –C 3 alkanol...
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7213650 |
System and method for scale removal in oil and gas recovery operations
A system and method for stimulating a formation surrounding a well and vibrating a device for supporting a gravel pack in the well, according to which a build up of scale on the device is sensed...
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7196040 |
Microcapsule 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...
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7165621 |
Method for exploitation of gas hydrates
A method and apparatus for producing gas from a hydrate formation includes the use of at least one wellbore which penetrates the hydrate formation and further extends into an aquifer below the...
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7134496 |
Method of removing an invert emulsion filter cake after the drilling process using a single phase microemulsion
Single phase microemulsions improve the removal of filter cakes formed during drilling with invert emulsions. The single phase microemulsion removes oil and solids from the deposited filter cake....
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7081438 |
Drilling fluids, drilling fluids additives and methods useful for limiting tar sands accretion on metal surfaces
Fluids useful in oil well drilling operations are described. The fluids comprise standard viscosifying and fluid loss control additives along with phosphonates or phosphate esters of organic...
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7059414 |
Acidizing stimulation method using a pH buffered acid solution
A method of stimulating subterranean formations in oil and gas wells using a high pH buffered acid system. The method may be used to treat sandstone formations wherein the pH buffered acid system...
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7036596 |
Hydraulic friction fluid heater and method of using same
A method and apparatus for heating a portion of a subsea structure is provided. The method includes pumping a fluid through a length of tubing such that the temperature of the fluid increases. The...
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7004258 |
Method and apparatus for enhancing oil and gas flow in a well
An apparatus for increasing oil and gas recovery includes a delivery mechanism for automatically introducing a flow enhancing substance into a plunger of an oil or gas well and method.
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6988552 |
Liquid carbon dioxide cleaning of wellbores and near-wellbore areas
A method to clean the wellbore and the near wellbore formation adjacent to the wellbore of the gas bearing formation adjacent to the production zone of the wellbore. The method includes the steps...
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6978843 |
Well configuration and method of increasing production from a hydrocarbon well
A well configuration and method of increasing production from a hydrocarbon well having pre-existing production tube. A composite velocity string having an outer diameter smaller than the inner...
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6978838 |
Method for removing filter cake from injection wells
A method is given for completing an interval of an open-hole injection well penetrating a subterranean formation when the interface between the wellbore and the formation includes a zone invaded by...
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6913081 |
Combined scale inhibitor and water control treatments
A combined scale inhibitor treatment and water control treatment requires fewer steps than the sum of each treatment procedure practiced separately. The control of water production simultaneously...
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6886635 |
Filter cake removal fluid and method
A method for removing filter cake from a subterranean borehole comprising drilling the borehole with a drilling fluid that includes additives to form a filter cake having an oxidation-degradable...
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6832655 |
Method for cleaning gravel packs
A method for cleaning a plugged gravel pack in a subterranean wellbore is provided. The method comprises the steps of using a pressure pulsating jet and a tangential vortex to deliver a pressure...
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6805198 |
Organic acid system for high temperature acidizing
Dicarboxylic acids are useful in acidizing subterranean formations to improve their permeability, particularly at elevated temperature, e.g. between about 200° F. (92° C.) and about 400° F....
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6769488 |
Well treatment tool and method of treating a well
A well treatment tool is installed along the sucker rod string of a well, within the surrounding production tube string. The tool provides for the distribution of a treatment fluid (solvent, etc.)...
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6733668 |
Apparatus for magnetically treating flowing fluids
An apparatus for magnetically treating fluids produced from a hydrocarbon well includes a hydrocarbon section and a reactor section. The hydrocarbon section is designed to treat crude oil to...
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6706668 |
Electron transfer agents in well acidizing compositions and methods
An acidizing composition and a method of acidizing a hydrocarbon bearing subterranean formation in the presence of ferric ions are provided. The acidizing composition includes a strong mineral acid...
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6705396 |
Method and apparatus for producing fluid cavitation
A method and apparatus for producing fluid cavitation is provided. For a given channel cross-section of a pressure line, the flow is accelerated so as to reach a speed at which Re>Re cr , where...
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6702022 |
Method and device to reduce asphaltene and paraffin accumulations in wells
An oil well capsule to reduce the paraffin and asphaltene which accumulate on the walls of the pipes which are used to bring the oil up from underground deposits, and a method of using the oil well...
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