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6772838 |
Lightweight particulate materials and uses therefor
Methods and compositions useful for sand control and/or hydraulic fracturing of subterranean formations that utilize relatively lightweight and/or substantially neutrally buoyant particles as...
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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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6745838 |
Chemical injection control system and method for multiple wells
The chemical injection system ( 10 ) is provided for controlling the distribution of chemical fluid from a supply conduit ( 12 ) into an individual petroleum well at an adjustable rate. The system...
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6720291 |
Well treatment composition for use in iron-rich environments
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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6666269 |
Method and apparatus for producing fluid from a well and for limiting accumulation of sediments in the well
An electric submersible pumping system provides for the production of fluids from a well and for limiting the amount of sediment accumulation in the well. The apparatus includes an electric...
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6637512 |
Soap stick launcher and method for launching soap sticks
A stick launcher and method for launching soap sticks into a gas or oil well. The stick launcher comprises a containment vessel adapted to house the soap sticks, the containment vessel comprising a...
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6581687 |
Water-in-oil microemulsions useful for oil field or gas field applications and methods for using the same
A microemulsion comprising (i) an oil phase, (ii) an aqueous phase comprising an aqueous solution of a water soluble oil field or gas field production chemical or an aqueous dispersion of a water...
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6530437 |
Multi-gradient drilling method and system
A multi-gradient system for drilling a well bore from a surface location into a seabed includes an injector for injecting buoyant substantially incompressible articles into a column of drilling...
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6520259 |
Method and apparatus for fluid entrainment
The present invention presents an improved method and apparatus for liquid entrainment by a two-phase flow system. The present invention provides an apparatus that recovers liquids by entrainment...
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6478089 |
Automatic chemical stick loader for wells and method of loading
An automatic chemical stick loader apparatus for gas wells, including a storage and dispensing cabinet at ground level, for sequentially feeding sticks therefrom, a launch tube for sequentially...
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6401816 |
Efficient method for subsurface treatments, including squeeze treatments
A method for delivering encapsulated materials to a subsurface environment, for the treatment of the subsurface environment, has the steps of: (a) loading the lumen of hollow microtubules with an...
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6398960 |
Method for remediation of aquifers
A method for remediating aquifers and groundwater contaminated, for example, by toxic halogenated organic compounds, certain inorganic compounds, and oxidized heavy metals and radionuclides, using...
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6379612 |
Scale inhibitors
The present invention provides compositions of oil-soluble inhibitors suitable for use in inhibiting oil field scale formation. The compositions comprise an acid form of a known scale inhibitor and...
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6357526 |
Field upgrading of heavy oil and bitumen
A process and system which integrates on-site heavy oil or bitumen upgrading and energy recovery for steam production with steam-assisted gravity drainage (SAGD) production of the heavy oil or...
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6343653 |
Chemical injector apparatus and method for oil well treatment
An apparatus for injecting a treatment chemical into an oil well produced using a subsurface pump, preferably a subsurface rotary pump, is described. Crude oil is pumped upward from a subsurface...
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6330916 |
Formation treatment method using deformable particles
A subterranean formation is treated by injecting a blend of fracture proppant material and deformable particulate material into the formation. The deformable particulate material may combine with...
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6321595 |
Characterization of organic contaminants and assessment of remediation performance in subsurface formations
Characterization of organic contaminants in subsurface formation is performed by methods for detecting the presence of nonaqueous phase liquid in a subsurface formation, and for determining the...
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6283202 |
Apparatus for dispensing a chemical additive into a well
A chemical additive element or "soap stick" dispensing apparatus, particularly adapted for use in dispensing soap sticks into gas wells, includes an elongated tubular soap stick magazine member and...
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6279656 |
Downhole chemical delivery system for oil and gas wells
The invention is the method of treating of a well, a formation, or both, with the solids, liquids, or apparatuses, by 1) encasing the solids, liquids, or apparatuses in a water-soluble shell, 2)...
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6213214 |
Pipeline treatment composites
Solid, slowly dispersible well treatment composites are provided which have a sufficiently high melting point to prevent melting of the composite in hot weather. The composites have a low...
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6209643 |
Method of controlling particulate flowback in subterranean wells and introducing treatment chemicals
The present invention provides a method of treating a subterranean formation with a particulate laden fluid whereby particulate flowback is reduced or prevented while also providing a controlled...
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6180699 |
Blend for preventing or retarding the formation of gas hydrates
A composition is provided herein for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising...
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6135207 |
Well treatment pellets
Solid, slowly dispersible well treatment composites are provided which have a sufficiently high melting point to prevent melting of the composite in hot weather. The composites have a low...
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6106700 |
Method of treating crude oil with an amine oxide compound
An aqueous composition containing an amine oxide surfactant, and preferably containing an amine oxide surfactant and enzymes, is added to crude oil, preferably by injecting the composition into the...
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6093862 |
Process for slowing the growth and/or agglomeration and possibly retarding the formation of hydrates in a production effluent
A process for slowing the growth and/or agglomeration of hydrates in a fluid comprising water and gases by adding at least one essentially water-soluble polyoxyalkylene glycol macromer or at least...
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6076278 |
Methods of drying pipelines
The present invention provides improved methods of drying pipelines containing water which are to transport hydrate forming gaseous fluids. The methods basically comprise flowing a liquid which...
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6056058 |
Methods and apparatus for automatically launching sticks of various materials into oil and gas wells
An apparatus, and related methods, for automatically releasing sticks of various materials into oil and gas wells. The apparatus has an enclosed magazine which has several chambers for the sticks....
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6048462 |
Waste component removal from crude oil or gas
A method is provided of reducing an amount of a waste component present in a hydrocarbon fluid produced from an earth formation via a wellbore formed in the earth formation, the hydrocarbon fluid...
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6035933 |
Process for the thermo-hydraulic control of gas hydrates
A process for the thermo-hydraulic control of gas hydrates in subsea production and injection wells as well as pipelines which transport liquid or gaseous hydrocarbons is described, the process...
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6028234 |
Process for making gas hydrates
The present invention provides a process for continuously producing clathrate hydrate. This process includes comprising the steps of: (a) pressurizing a hydrate-forming gas to an elevated...
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6021847 |
Removing a waste component from a hydrocarbon fluid
The invention relates to a method of reducing an amount of a waste component present in a hydrocarbon fluid produced from an earth formation via a wellbore formed in the earth formation, the...
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6019903 |
Geothermal brine processing
A corrosive acid sulfate geothermal brine is mixed with a near neutral, bicarbonate geothermal brine containing above about 300 ppm silica to produce a relatively benign mixed brine of pH from...
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5960878 |
Methods of protecting well tubular goods from corrosion
The present invention provides methods of protecting ferrous metal well tubular goods and the like disposed in a well bore penetrating a subterranean formation from corrosion. The method basically...
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5924490 |
Well treatment tool and method of using the same
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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5900516 |
Method for predetermining a polymer for inhibiting hydrate formation
A method for inhibiting the formation and/or agglomeration of clathrate hydrates in a petroleum fluid stream containing water is disclosed. The disclosed method uses predetermined inhibitors having...
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5893416 |
Oil well treatment
Corrosion, scale-formation, or other deleterious processes are inhibited in an oil well by installing within the oil well (10) fluid-permeable elements, such as tubular filters (20), which...
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5891262 |
On-line thermo-chemical process for the dewaxing of oil export pipelines
An on-line, thermo-chemical process for the dewaxing of oil export pipelines with the aid of a Nitrogen Generating System is described, wherein the treating fluid to be employed as dewaxing fluid...
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5891829 |
Process for the downhole upgrading of extra heavy crude oil
A down hole hydroconversion process improves the viscosity, API gravity, and distillate proportions of heavy crude oils by employing a hydrogen donor, methane and steam down hole wherein the...
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5880319 |
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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5858245 |
Inhibition of silicate scale formation
A method for controlling fouling of a production or reinjection well, a flashing vessel or a heat-exchange surface exposed to a high-enthalpy geothermal brine that forms metal/silicon-containing...
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5848644 |
Process for reducing the tendency of hydrates to agglomerate in production effluents containing paraffin oils
The invention concerns a process for reducing the tendency of hydrates in a fluid comprising at least water, a gas and a paraffin oil to agglomerate, by addition of a mixture of at least two...
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5837145 |
Method for treating water contaminated with cyanide
A method for treating cyanide contaminated water is disclosed. This method generally involves passing the contaminated water through a bed containing elemental iron, to form a precipitate by a...
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5824214 |
Method for hydrotreating and upgrading heavy crude oil during production
Heavy crude oil containing at least 1% by weight water is hydrotreated and upgraded while being produced downhole in a production well. During production the heavy crude oil containing water is...
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5817898 |
Process for inhibiting or retarding the formation, growth and/or aggregation of hydrates in production effluents
A process is described for retarding or inhibiting the growth and/or aggregation of hydrates in production effluents comprising water and a gas under thermodynamic conditions in which hydrates can...
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5813455 |
Chemical dispensing system
An apparatus and method for automatically dispensing chemical sticks into a well bore is provided. In the preferred form, the apparatus is for dispensing soap sticks to unload an oil/gas producing...
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5803174 |
Groundwater well with reactive filter pack
A method and apparatus for the remediation of contaminated soil and ground water wherein a reactive pack material is added to the annular fill material utilized in standard well construction...
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5789635 |
Method for inhibiting or retarding hydrate formation, growth and/or agglomeration
The invention concerns a process for inhibiting or retarding hydrate formation, growth and/or agglomeration in a fluid comprising water and gases, by addition of a hydrosoluble copolymer which does...
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5783524 |
Use of glycine-N,N-diacetic acid derivatives as complexing agents for alkaline earth metal and heavy metal ions in the production and transport of petroleum and natural gas
Glycine-N,N-diacetic acid derivatives and their alkali metal, akaline earth metal, ammonium and substituted ammonium salts, used as completing agents for alkaline earth metal and heavy metal ions...
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5758725 |
Method and device for enhancing oil and gas flow in a well
A method and device for increasing oil and gas recovery include connecting an oil and gas flow enhancing stick to a weighted plunger to speed the decent of the stick to the bottom of a well, which...
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5755972 |
Method for metal sulfate scale control in harsh oilfield conditions
A method for inhibiting barium sulfate precipitation in low pH aqueous fluids of underground petroleum-bearing formations by adding to such systems an effective amount of low molecular weight...
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