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7361628 Remote delivery of latex drag-reducing agent without introduction of immiscible low-viscosity flow facilitator  
Latex drag reducers and systems for delivering latex drag reducers are disclosed. The latex drag reducers comprise a polymer that is formed via an emulsion polymerization reaction dispersed in a...
7278485 Method of formulating and using a drilling mud with fragile gels  
A method for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid is disclosed, as well as compositions for use in such...
7226895 Drilling fluid systems for reducing circulation losses  
A circulation loss combination for water-based drilling fluid system(s) comprising: a first amount of alkali metal silicate; a second amount of water insoluble particulate; and, a quantity of water...
7219728 Method and apparatus for generating downhole power  
A system that is usable with a subterranean well includes a first tubular member that is adapted to receive a flow of a first fluid. The system includes a second tubular member that is located in...
7185699 Water compatible hydraulic fluids  
A composition for use in an oil chamber of a tool includes a hydraulic oil; and a surfactant, wherein the surfactant is present at an amount sufficient to form micelles in the hydraulic oil. The...
7172703 Method of reclaiming a well completion brine solutions using an organic chelant  
A method of reclaiming a well completion brine solution by using an organic chelant that is capable of discriminating between (i) iron and/or non-zinc heavy metals; and (ii) calcium and zinc. The...
7144512 Method of reclaiming brine solutions using an organic chelant  
A method of reclaiming a well completion brine solution by using an organic chelant that is capable of discriminating between (i) iron and non-zinc heavy metals; and (ii) calcium and zinc. The...
6926836 Treatment of iron sulphide deposits  
Treating a water system containing or in contact with a metal sulphide scale to inhibit, prevent, reduce, dissolve or disperse iron sulphide deposits. A solution of tris(hydroxyorgano)phosphines...
6820689 Method and apparatus for generating pollution free electrical energy from hydrocarbons  
The present invention relates to the generation of substantially pollution free energy by utilizing hydrocarbons to create electrical energy for interconnection to local transmission lines...
6250391 Producing hydrocarbons from well with underground reservoir  
A method of extracting liquid hydrocarbons from geological formations having a reduced or low liquid hydrocarbon flow rate utilizing a wellbore extending downwardly from the surface of the ground...
6131657 Method for preventing or inhibiting metal deposition  
A method for inhibiting or preventing the deposition of metals onto metallic surfaces, particularly the metal surfaces in an oil or gas well is disclosed.
6026900 Multiple liner method for borehole access  
A method is provided for supporting and sealing structure defining a generally cylindrical hole while introducing and removing devices from the hole. A first flexible liner is installed in the hole...
5884700 Interior coating of gas well tubing  
A method and apparatus for treating the production tubing string of a flowing gas well is disclosed. The method includes introducing treatment fluid into the wellhead end of the production tubing...
5787983 Methods of delaying well destruction due to subsidence  
The present invention provides methods of delaying the destruction of a well as a result of the movement of a subsiding subterranean rock formation penetrated by the well bore. In accordance with...
5535826 Well-head structures  
This invention relates to well-head structures, and particularly to so-called christmas trees, i.e. the complex of valves and pipes installed at a well-head to control the flow of high pressure oil...
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...
5277823 Silica scale inhibition  
A method for inhibiting silica scale formation in aqueous systems using selected low molecular weight (meth)acrylic or maleic acid based copolymers or terpolymers, magnesium ion alone, or the...
5207919 Metal ion complexes for use as scale inhibitors  
Complex molecules of phosphonic acid ligands and transition metal ions are found to be surprisingly good at inhibiting and even preventing scale in aqueous solutions, crude oils, aqueous production...
5112496 Methods for inhibition of scale in high brine environments  
A method for inhibiting oilfield scale formation including calcite in a high brine environment comprises introducing an effective amount of a scale inhibiting composition to a high brine...
4937002 Interpolymers for barium sulphate inhibition  
The present invention provides a method for treating aqueous systems to reduce or prevent the deposition of barium sulphate and other insoluble sulphates therein, comprising the addition to the...
4923617 Process for inhibiting scale formation  
A process for inhibiting the formation of scale in process equipment and conduits that form because of the presence of scale forming salts present in process fluids flowing therein is provided. In...
4898677 Process for inhibiting scale formation and modifying the crystal structure of barium sulfate and other inorganic salts  
The deposition of scale-imparting precipitates in aqueous media containing significant amounts of barium sulfate and other scale forming salts (e.g., calcium carbonate and calcium sulfate) is...
4836941 Clear brine fluids  
A clear brine fluid composition for use in servicing wells in the oil and gas industry comprising a solution of a zinc halide and a calcium halide in water having a density lying in the range of...
4763729 Method for inhibiting corrosion of iron-containing alloy articles in sulfur-containing media  
Corrosion of iron-containing alloy articles is inhibited by forming on the articles a corrosion resistant layer containing atoms of a refractory metal.
4671833 Process for applying a heat-shrinkable material over sulfur well piping  
A process for placing heat-shrinkable polyfluoroolefin polymer sleeves, preferably, FEP resin or PFA resin, over Frasch sulfur well piping and other downhole well piping to protect such piping from...
4615387 Annular gas trap  
Well apparatus for use in injecting corrosion inhibitor into the annulus between casing and tubing strings below an injection/packer assembly positioned in such annulus which includes an annular...
4602683 Method of inhibiting scale in wells  
Scale deposition is inhibited with a new scale inhibitor precipitation squeeze method wherein inhibitor solution is injected at a higher first pH into a subsurface brine producing formation....
4590996 Use of polyalkoxy sulfonate surfactants for inhibition of scale formation  
The accumulation of inorganic mineral scale such as barium sulfate in oil field formations and/or production equipment is inhibited by adding to formation fluid or produced fluid a scale formation...
4585062 Method of using rods resistant to hydrosulfuric acid  
High-strength rods, useful in an acid enviroment, in which the H 2 S partial pressure in gaseous phase may exceed 300 Pa or in which the H 2 S content in liquid phase may have a corresponding...
4570708 Method of using pipes resistant to hydrosulphuric acid  
High-strength pipes are manufactured from cold-deformed carbon steel or alloyed steel for use in acid environment, in which the H 2 S partial pressure in gaseous phase may exceed 300 Pa or in...
4513818 Method for reducing scale in geothermal systems  
A method for reducing deposition of scale in geothermal wellbores and geothermal flash steam plants is described. Naturally occurring brines containing different amounts of dissolved solids and...
4501674 Method for reducing corrosiveness of aqueous fluids  
A method is provided for reducing the corrosiveness of an aqueous fluid, particularly water containing dissolved oxygen and corrosive chemical agents such as naturally-occurring brine. According to...
4490262 Method of servicing wellbores  
The servicing of wellbores with a high density fluid to maintain an elevated pressure on a portion of the formation penetrated by the well is improved. The improvement comprises injecting as the...
4481316 Method for inhibiting the degradation of an aqueous solution of an acrylamide polymer in a petroleum recovery process  
2-Mercaptobenzoimidazole or its water-soluble salt is added to a water-soluble acrylamide polymer containing a predominant amount of acrylamide in the molecule to inhibit degradation, especially at...
4465601 Composition and method for servicing wellbores  
A method is disclosed for servicing a wellbore comprising introducing into the wellbore a substantially solids-free fluid comprising an admixture of water, calcium bromide and methanol and wherein...
4454914 Method for conditioning geothermal brine to reduce scale formation  
A method for conditioning a flow of hot geothermal brine or aqueous liquid to reduce scale formation by pH-sensitive, dissolved materials includes injecting into the flow of brine or liquid an...
4393163 Method for stabilizing an acrylamide polymer in a petroleum recovery process  
2-Mercaptobenzoimidazole or its water-soluble salt is added to a water-soluble acrylamide polymer containing a predominant amount of acrylamide in the molecule to inhibit degradation, especially at...
4336146 Method of thickening heavy brine solutions  
Thickening of heavy brine solutions based on calcium halides by use of water-insoluble hydroxyethyl cellulose is disclosed.
4326585 Method and apparatus for treating well components with a corrosion inhibiting fluid  
A method and apparatus as provided for periodically supplying a quantity of fluid containing a corrosion inhibitor or other treating fluid to both the internal and external surfaces of downhole...
4306624 System for preventing hydrate plug formation in gas wells  
A modification is provided in an assembly for use in an offshore well test string during oil or gas tests on exploration wells. The well has a well bore and a test string with a subsea test tree...
4292183 High-density fluid compositions  
Clear, high-density fluids suitable for use as well completion, packing, and perforation media comprise aqueous solutions of zinc bromide and calcium bromide having densities lying in the range of...
4245698 Superalloys having improved resistance to hydrogen embrittlement and methods of producing and using the same  
Cold-worked superalloys having improved resistance to hydrogen embrittlement are disclosed. These new superalloys are nickel- or cobalt-chromium-molybdenum superalloys and possess improved...
4217229 Oil well spacer fluids  
A high stability, nondamaging spacer fluid is provided containing readily available weighting agents such as calcium carbonate and iron carbonate dispersed in water using a polymer viscosifier, a...
4160063 Method for preventing the adherence of oil to surfaces  
A method for preventing the adherence of oil to sucker rods or other surfaces in oil wells, by coating the surfaces contacting the oil with a film of a polymer that prevents or reduces oil...
4147212 Control of hydrogen sulfide gas to reduce toxicity and corrosion due to exposures thereto  
Hydrogen sulfide, sometimes referred to as "rotten egg" gas occurs commonly in nature, particularly about oil and gas wells in drilling, completing and working over of wells and is dangerously...
4132268 Method for insuring oil well treatment on a regular basis as scheduled  
A method is disclosed for insuring oil well treatment as with a corrosion inhibitor, for example, with a precise slug of a chemical on a regular basis comprising, briefly, repeatedly and precisely...
4033410 Monoethanolamine process for sulfur removal from circulating oil used in sour gas wells  
Circulating oil used for removal of sulfur in sour gas wells is contacted with an aqueous solution of an organic amine and allowed to separate into an oil phase and an aqueous amine phase...
3958635 Method of inhibiting scale for high temperature steam wells  
A method of inhibiting the formation of scale from aqueous solutions containing scale-forming ions at temperatures of 400° F. and above during production and utilization of such aqueous solutions...
3853177 AUTOMATIC SUBSURFACE BLOWOUT PREVENTION  
A tool and method for automatic subsurface closure of a well to prevent the uncontrolled flow of high-pressure formation fluids upward to the atmosphere while a well is being drilled or completed....
3710867 APPARATUS AND PROCESS FOR ADDING CHEMICALS  
An apparatus and process for adding chemicals, such as well treating chemicals, etc., to a system, such as an oil well, which comprises: 1. a chemical inlet valve capable of connection to a...
Matches 1 - 50 out of 70 1 2 >