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5744709 |
Measurement of specific interfacial areas of immiscible fluid interfaces in flow systems
This invention relates generally to methods of measuring interfacial areas, and more specifically to flow-based methods for measuring the area of the interfaces between two immiscible fluids. The...
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5656172 |
pH modification of geothermal brine with sulfur-containing acid
Sulfur-containing acid is produced at a geothermal energy source from hydrogen sulfide produced as part of a geothermal process and introduced into aqueous liquid brine to lower the pH of the...
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5655601 |
Method for scale inhibitor squeeze application to gas and oil wells
A method for inhibiting scale formation in an oil or gas well is provided. Specifically, the method is a novel "squeeze" application. The squeeze comprises injecting three solutions into the oil or...
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5653288 |
Contaminant remediation, biodegradation and volatilization methods and apparatuses
Methods and apparatuses for removing contaminants. At least one injection well is drilled through the vadose zone to a depth below the water table defining the upper boundary of the aquifer. A...
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5639925 |
Additives and method for controlling clathrate hydrates in fluid systems
Discussed is a process for preventing clathrate hydrate masses from detrimentally impeding the possible flow of a fluid susceptible to clathrate hydrate formation. The process is particularly...
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5622920 |
Emulsion of viscous hydrocarbon in aqueous buffer solution and method for preparing same
A method for forming a stable emulsion of a viscous hydrocarbon in an aqueous buffer solution includes the steps of: providing a viscous hydrocarbon containing an inactive natural surfactant and...
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5590716 |
Method of inhibiting downhole corrosion of metal surfaces
A method of inhibiting corrosion on metal surfaces and downhole equipment and above surface separation equipment from a mixture of brine and crude oil extracted from underground formations. The...
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5544705 |
Method for injecting fluid into a wellbore
A method for injecting fluid, such as an accelerator, into a wellbore comprises storing the fluid in a reservoir, locating the reservoir downhole in the wellbore, and then transferring the fluid...
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5531895 |
Method and apparatus for installing and removing biologically structured wall systems
The environment in a porous area, such as in an aquifer in controlled to promote the growth of indigenous microorganisms as well as introduced microorganisms. Nutrients and other growth-promoting...
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5509760 |
Method of rapid purging of contaminants from a contaminated area of soil or ground water
A remediation method for decontamination of soil and groundwater that puts maximum remediation stress on the entire area and volume of contamination. This results in site restoration in days and...
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5431222 |
Apparatus for production of crude oil
A system for improving production of crude oil from an underground reservoir by the injection of treatment fluids includes a well casing, a production tube located within said well casing and...
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5413718 |
Use of added water to achieve 100% injection weight in geothermal operations
Geothermal brines are extracted from the earth, flashed and the remaining liquids are injected back into the earth. Although it would be advantageous for resource maintenance to inject the same...
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5403493 |
Noncorrosive scale inhibitor additive in geothermal wells
An aqueous scale inhibitor product is corrosive to the elongated feed lines of a geothermal well due to the length of such feed lines, extended residence time of the product therein, and/or the...
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5396958 |
Well treating composition and method of use
Improved mud additive compositions are provided which are especially formulated to control hole enlargement due to salt bed erosion during drilling, and to assist in solubilization of deposited...
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5388644 |
Application of N,N-dialkylamides to reduce precipitation of asphalt from crude oil
A method of reducing, preferably preventing, precipitation of asphalt from crude oil. In one aspect, crude oil is contacted in the borehole with at least one N,N-dialkylamide of a fatty acid having...
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5360065 |
Scale inhibitor and process for using
A copolymer of sodium vinyl sulfonate and polyalkylene glycol mono- or di-methacrylate and a process for inhibiting scale deposition, particularly inorganic sulfate such as barium sulfate. An...
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5351756 |
Process for the treatment and transportation of a natural gas from a gas well
A process for the treatment or processing and transportation of a natural gas from a gas well to a reception and treatment or processing terminal comprises, in a zone in the producing well,...
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5263541 |
Inhibition of scale growth utilizing a dual polymer composition
A method for inhibiting inorganic sulfate scale growth in an aqueous fluid present within or produced from a subterranean formation is performed by contacting the aqueous fluid in situ with a scale...
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5246074 |
Slip stream device with adjustable choke, and method of choking a fluid flow path
An apparatus is provided for continually adding chemicals to a producing oil and gas well. A mixing chamber is provided having an inlet and an outlet. A subassembly is provided for diverting a flow...
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5244878 |
Process for delaying the formation and/or reducing the agglomeration tendency of hydrates
A process for delaying the formation and/or reducing the agglomeration tendency of hydrates in conditions under which a hydrate may be formed, these hydrates being formed from water and gas. The...
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5213691 |
Phosphonate-containing polymers for controlling scale in underground petroleum-containing formations and equipment associated therewith
A method of removing from and preventing scale from depositing in underground petroleum containing formations and upon equipment used to inject high brine scale forming waters into such formations...
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5190664 |
Brine heat exchanger treatment method
A method for controlling fouling of a heat exchange surface exposed to a high-enthalpy geothermal brine tending to form silica scale, but containing less than a saturated amount of cations capable...
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5188178 |
Method and apparatus for automatic well stimulation
An apparatus for stimulating production from oil and gas wells has a magazine which is sequentially actuated to allow chemical stimulant to be dispensed into the well to cause agitation of fluid...
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5188179 |
Dynamic polysulfide corrosion inhibitor method and system for oil field piping
A system and method for inhibiting corrosion of oil field pipe exposed to corrosive material including hydrogen sulfide, carbon dioxide, and sodium chloride with a corrosion inhibiting film which...
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5171459 |
Scale deposition inhibitor
A aqueous oil well scale inhibiting composition is disclosed as well as a dispersion and scale inhibiting method. The inhibitor comprises a phosphate ester or phosphonate calcium carbonate...
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5168933 |
Combination hydraulic tubing hanger and chemical injection sub
A mudline tubing hanger is disclosed in which the tubing hanger is provided as an integral part of the tubing string and is set within the casing by an hydraulic setting mechanism driven through an...
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5167828 |
Phosphinate-containing polymers for controlling scale in underground petroleum-containing formations and equipment associated therewith
A method of preventing scale from depositing in underground petroleum-containing formations and upon equipment used to inject into or remove from such formations high brine, scale-forming waters....
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5152177 |
Process for the detection and quantitation of corrosion and scale inhibitors in produced well fluids
Corrosion and scale inhibitors in fluids produced from a subterranean formation are separated, detected, and quantified by thin layer chromatography through the use of selected developing solvents...
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5139088 |
Method of inhibiting asphalt precipitation in an oil production well
Asphalt precipitation in the flow path of an oil production well is inhibited by splitting the produced crude oil in a separator train into a light fraction containing gaseous and oil components...
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5135053 |
Treatment of well tubulars with gelatin
A method for treating well tubulars and elements (e.g. tubing, casing, sucker rods, etc.) for corrosion, drag reduction, or the like wherein a mass of gelatin is passed downward through the tubular...
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5117913 |
Chemical injection system for downhole treating
A chemical injection assembly and apparatus for treating production fluids in a bore-hole. The system includes a fixed packer having an opening passing therethrough for receiving a production...
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5103914 |
Well treatment system
A system for chemically treating water in a water well utilizes a small pipe for diverting a small percentage of water being pumped from the well. The diverted water flows through a chamber...
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5092404 |
Polyvinyl sulfonate scale inhibitor
A relatively high molecular weight polyvinyl sulfonate and a process for inhibiting scale deposition, particularly inorganic sulfate such as barium sulfate, wherein an aqueous fluid present in or...
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5080805 |
Method and apparatus for removing iron from well water
A method of removing iron from ground water located in a water well and of preventing production of hydrogen sulphide in such water including positioning a bubbling device in the well below the...
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5076364 |
Gas hydrate inhibition
Gas hydrate formation in a gas well is prevented by injecting a carrier and an alcohol (e.g., glycerol or a glycerol derivative) into the well and connected facilities/pipelines.
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5073270 |
Use of reducing agents to control scale deposition from high temperature brine
The deposition of metal-containing scale, such as iron silicate scale, from a hot aqueous geothermal brine, or the like, is controlled by blending into the brine sufficient reducing agent effective...
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5066468 |
Fountain for the release of active agents into water drawn from wells
Fountain permitting the release of active agents into water originating from a well, comprising a passage for circulating the water drawn from the well around a cartridge containing the active...
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5060728 |
Process for preventing scale formation in oil wells
Wells producing oil and gas are treated with formation waters containing selected time-release scale inhibitors to reduce the deposit of scale in the wellbore and within the formation. The...
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5056599 |
Method for treatment of wells
The invention relates to a valve suitable for use in high-pressure environment for transmitting a treatment fluid from exterior of which is affected by a pre-charged compression gas which keeps the...
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5044439 |
Method of treating geothermal wells with acrylate/acrylamide scale inhibitor
A geothermal water well is treated with an effective amount of a scale inhibitor formulation containing a Na acrylate/acrylamide copolymer to inhibit the buildings of CaCO 3 scale therein.
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5027901 |
Method of oil well corrosion inhibition via emulsions and emulsions therefore
A method of inhibiting corrosion in an oil well comprises introducing into the well a pourable emulsion comprising a. 50-95% of a discontinuous aqueous phase (such as ordinary water); and b....
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5016712 |
Method and apparatus for locating solvent injection apparatus within a natural gas wellbore
A method and apparatus are provided for locating a solvent injection apparatus within a natural gas wellbore to reduce the deposition of hydrocarbonaceous solids which are at least partially...
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4988389 |
Exploitation method for reservoirs containing hydrogen sulphide
A method of producing fluids from subterreanean reservoirs containing hydrogen sulphide and especially those reservoirs where elemental sulphur or hydrogen polysulphides are present. The method...
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4986353 |
Placement process for oil field chemicals
Oil field chemicals are incorporated in polymeric particles of the condensation product of hydroxyacetic acid or the co-condensation product of hydroxyacetic acid and other compounds containing...
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4986354 |
Composition and placement process for oil field chemicals
Oil field chemicals are incorporated in microcapsules of the condensation product of hydroxyacetic acid or the co-condensation product of hydroxyacetic acid and other compounds containing hydroxy-,...
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4966235 |
In situ application of high temperature resistant surfactants to produce water continuous emulsions for improved crude recovery
A process for recovering oil from a subterranean hydrocarbon-bearing reservoir having a hydrocarbon and penetrated by a wellbore. The process comprises injecting through the wellbore and into the...
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4964468 |
Method of inhibiting corrosion
Corrosion inhibition composition formed as a water-external emulsions having an oil soluble organic film forming type of corrosion inhibitor in the dispersed phase thereof are disclosed for...
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4958683 |
Method and apparatus for treating wells
A method for reducing organic contaminants in a well initially breaks down complex organic compounds by radiation with gamma radiation. The remaining materials are subjected to oxygen radicals in...
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4947934 |
Method of increasing retention of scale inhibitor in subterranean formations
A method for inhibiting the formation of scale in a well penetrating a subterranean formation for the production of fluids from the formation comprising injecting into the formation an acidic...
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4945992 |
Process for producing or cleaning high pressure water injection wells
A process for controlling biomass and cleaning water injection wells and oil producing wells by injecting an oxidant into the pumped water injection stream. Chlorine dioxide or sodium chlorite,...
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