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8772206 Treatment fluids made of halogenisocyanuric acid and its salts for operations in a well  
The invention discloses a method comprising providing a fluid comprising a viscosifying agent in an aqueous medium; contacting the fluid with a halogenisocyanuric acid or halogenisocyanurate...
8716199 Corrosion inhibitor intensifier compositions  
Corrosion inhibitor compounds including a corrosion inhibitor and a corrosion inhibitor intensifier composition comprising an intensifier compound that corresponds to the following formula:...
8551925 Imidazoline-based heterocyclic foamers for downhole injection  
Disclosed are imidazoline-based foamers and corrosion inhibitors for treatment of oil and gas wells for enhanced production. The invention also includes methods of foaming a fluid by introducing...
8399386 Foamers for downhole injection  
The present invention relates to a method for introducing a foaming composition including an imidazoline-based compound to a fluid. The foaming composition comprises at least one quaternized...
8354361 Method of using dithiazines and derivatives thereof in the treatment of wells  
Corrosion of metallic tubulars in an oil, gas or geothermal well may be inhibited by introducing into the well a dithiazine derivative of the formula: wherein R14 is a C1-C24 straight chain or...
8105987 Corrosion inhibitors for an aqueous medium  
One or more methods for inhibiting corrosion in an aqueous medium that contain a composition with a specified generic formula are disclosed. The aqueous medium can be contained in an oil or gas...
8105988 Corrosion inhibitors for a fluid  
One or more methods for inhibiting corrosion in a fluid that contain a composition with a specified generic formula are disclosed. The fluid can be contained in an oil or gas pipeline or refinery.
8022017 Method of using dithiazine to inhibit corrosion  
Corrosion of metallic tubulars in an oil, gas or geothermal well may be inhibited by introducing into the well a dithiazine of the formula: wherein R is selected from the group consisting of a C1...
8022018 Quaternized dithiazines and method of using same in treatment of wells  
Corrosion of metallic tubulars in an oil, gas or geothermal well may be inhibited by introducing into the well a dithiazine or dithiazine of the formula: wherein R is selected from the group...
8007689 Liquid composition suitable for use as a corrosion inhibitor and a method for its preparation  
A liquid composition comprising a high-capacity aqueous carrier in which (i) a metalloid compound selected from the group consisting of antimony and germanium compounds and (ii) morpholine or...
8006761 Wellbore fluid comprising a base fluid and a particulate bridging agent  
A wellbore fluid comprising a base fluid and a particulate bridging agent comprised of a sparingly water-soluble material selected from the group consisting of melamine...
7989403 Corrosion inhibitors containing amide surfactants for a fluid  
A method of inhibiting corrosion in a fluid is disclosed. The method comprises: adding to the fluid an effective corrosion inhibiting amount of a synergist, a synergist when H2S is present in the...
7960316 Corrosion inhibitor intensifier compositions and associated methods  
At least in aspect, the invention provides methods that include a method comprising: contacting a metal surface with an acidic fluid comprising an aqueous base-fluid, an acid, a corrosion...
7943555 Wellbore treatment kits for forming a polymeric precipitate to reduce the loss of fluid to a subterranean formation  
Wellbore treatment kits are provide that include a polymeric solution for placement in a wellbore that penetrates a subterranean formation and an activator for causing a polymer to precipitate out...
7854277 Wellbore fluid comprising a base fluid and a particulate bridging agent  
Wellbore fluid containing a base fluid and a particulate bridging agent comprised of melamine. A method is also described of forming a removable filter cake on the walls of a wellbore that...
7398824 Method for inhibiting or controlling inorganic scale formations with copolymers of acrylamide and quaternary ammonium salts  
A formulation containing a copolymer derived from a cationic monomer effectively inhibits and controls the formation of inorganic scales. Suitable copolymers include those comprising an acrylamide...
7125483 Corrosion control in olefin production plants  
A method for reducing acid corrosion and products of acid corrosion in a thermal cracking plant, the acid corrosion products being compounds of iron, chromium, nickel, lead, cadmium, manganese,...
6939483 Brine fluids with improved corrosion properties  
It has been discovered that ammonia and amines are useful to increase the pH and corrosion resistance of high density brines, such as zinc bromide brines, without significantly reducing their...
6800594 Corrosion inhibitor barrier for ferrous and non-ferrous metals  
An environmentally friendly corrosion inhibiting formulation for the oil-water interface of pipe lines and oil well drilling systems which is prepared pursuant to a process including the steps of...
6770602 Oil based well fluids with high solids content  
A fluid having utility in subterranean wells is formulated to include: an oleaginous fluid; and a solids tolerance agent having the formula: in which R is a C6 to C20 aliphatic group and R′ is a...
6475431 Corrosion inhibitors with low environmental toxicity  
A low toxic, biodegradable, water soluble and dispersant series of corrosion inhibitors are described. The method of inhibiting corrosion in aqueous medium by incorporating the inhibitor in PPM is...
6350721 Fluids and techniques for matrix acidizing  
Liquids comprised solely of anions and cations (“ionic liquids”) are disclosed as novel components of fluids (and techniques relying upon those fluids) for stimulation of hydrocarbon wells. In...
5756004 Quaternary ammonium compounds useful for inhibiting metal corrosion  
The present invention provides improved quaternary ammonium compounds useful as metal corrosion inhibitors in aqueous acid solutions, methods of preparing the compounds, metal corrosion inhibited...
5591701 Iterated foam process and composition for well treatment  
In the removal of particulates from a wellbore, such as in air drilling for hydrocarbon recovery, a mixture of an amphoteric foaming agent and, typically, an anionic surfactant is employed. An...
5504063 Asphaltene removal composition and method  
An asphaltene removal composition comprising an alkyleneamine-fatty acid condensation reaction product and one or more polar aprotic high dielectric constant solvents is useful for removing and...
5399270 Inhibition of scale formation from oil well brines utilizing a slow release composition  
A method for the inhibition of scale deposition on the surfaces of a well coproducing oil and scale forming brines comprising injecting into the well reservoir an acidic aqueous solution at a...
5366643 Method and composition for acidizing subterranean formations  
The invention relates to a method and composition for acidizing a subterranean formation employing an acidic solution comprising hydrochloric acid solution containing a corrosion inhibitor present...
5322630 Amine derivatives as corrosion inhibitors  
A method of acidizing a subterranean formation with an acqueous acid solution wherein the acid solution contains corrosion inhibiting amounts of an amine derivative prepared by reacting an...
5300235 Corrosion inhibitors  
Amine derivatives which are compounds of the formula (I): ##STR1## in which R is a C6-20 hydrocarbon; Y is --CO--NH-- and n is an integer of 1 to 6; or ##STR2## in which X is an alkylene group of...
5271464 Temporary plugging agent  
The present invention provides a method of temporarily plugging or sealing a subterranean formation by introducing a rapidly viscosifying liquid hydrocarbon into the formation. The method is...
5250225 Ammonium salt of an alkenylsuccinic half-amide and the use thereof as corrosion inhibitor in oil and/or gas production technology  
An ammonium salt of an alkenylsuccinic half-amide of formula (I) below ##STR1## in which R1 denotes H or a C6 -C18 -alkenyl radical, provided that the radicals R1 are not both H or both C6 -C18...
5197545 Volatile corrosion inhibitors for gas lift  
A method is disclosed for volatile inhibition and transport of inhibitor in the volatile phase to produced liquids of corrosion in a gas lift process in which a lift gas is pumped into a well to...
5174957 Emulsion minimizing corrosion inhibitor for naphtah/water systems  
A corrosion inhibitor formulation for oil and water systems which formulation is resistant to sludge formation and does not tend to stabilize oil/water emulsions when added to oil and water...
5146986 Methods of reducing the water permeability of water and oil producing subterranean formations  
A method of reducing the water produced from a subterranean formation penetrated by a wellbore without appreciably reducing the oil produced therefrom is provided. In accordance with the method,...
5104557 Mercaptan composition for dissolving sulfur and process for its use  
A composition is disclosed for dissolving sulfur and preventing or removing sulfur plugs from sour gas and oil wells or other conduits through which sulfur bearing liquids flow which comprises a...
5082576 Removal of sulfides using chlorite and an amphoteric ammonium betaine  
This invention relates to a composition suitable for use in process for the removal of sulfides, especially hydrogen sulfide from a feed contaminated therewith. The composition comprises an...
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. 5-50%...
5028344 Stabilizing agent for profile control gels and polymeric gels of improved stability  
An aqueous polymeric gel-forming composition of improved stability for selectively plugging highly permeable zones in subterranean oil-bearing formations. The composition comprises an aqueous...
5026491 Controlling sulfate reducing bacteria by slug dosing with quick-kill antimicrobials and by continuous dosing with isothiazolones  
A method is described whereby quick-kill and maintenance antimicrobials are used to control biofouling of oil production water injection systems.
5016714 Biocidal well treatment method  
Methods of treating a previously fractured bacteria contaminated subterranean formation penetrated by a well bore whereby the bacteria contamination is substantially reduced or eliminated are...
5013462 Method for improving production of viscous crude oil  
This invention concerns methods for improving the mobility and pipeline transport of a viscous crude oil and the productivity of viscous crude oil producing wells by forming an oil-in-water...
4980074 Corrosion inhibitors for aqueous brines  
A high density brine useful as a drilling fluid for deep wells is rendered corrosion resistant by the incorporation of a soluble aliphatic or aromatic aldehyde with or without olefinic...
4964615 Compositions for freeing jammed drill pipes  
Compositions free from mineral oil and used for freeing jammed drill pipes in drilling operations, and processes for using such compositions are disclosed. The compositions comprise a mixture of:...
4961867 Process for preventing corrosion of metals by contacting them with compositions prepared from amino substituted pyrazines and carboxylic acids carboxylic acid anhydrides, carboxylic acid, esters or carboxylic acid halides  
Novel compositions are prepared from (1) amino substituted pyrazine compounds such as pyrazinamine and (2) at least one of (a) a carboxylic acid, (b) carboxylic acid anhydride, (c) carboxylic acid...
4957640 Corrosion prevention with compositions prepared from organic fatty amines and nitrogen-containing aromatic heterocyclic compounds  
Corrrosion inhibiting compositions containing compositions prepared from (1) nitrogen-containing aromatic heterocyclic compound having at least one group of either (a) a carboxylic acid, (b)...
4950411 Corrosion inhibitor compositions  
Corrosion inhibitor compositions for metals are disclosed which comprise (a) the product resulting from reacting a vinyl substituted pyrazine such as 2-vinylpyrazine with a primary or secondary...
4925578 Polymer-thickened aqueous solutions containing a mercaptobenzothiazole  
Improved solutions are proposed for an oil recovery process in which oil is displaced by a viscous alkaline aqueous solution. The improved aqueous alkaline solution contains a water-thickening...
4900458 Polyalkylenepolyamines as corrosion inhibitors  
A corrosion inhibiting polyalkylenepolyamine composition comprising a mixture of (a) at least one C-alkyl-ethylene diamine, and (b) at least one di-(C-alkyl)-diethylenetriamine or at least one...
4861884 Compositions prepared from amino substituted pyrazines and carboxylic acids, carboxylic acid anhydrides, carboxylic acid esters or carboxylic acid halides  
Novel compositions are prepared from (1) amino substituted pyrazine compounds such as pyrazinamine and (2) at least one of (a) a carboxylic acid, (b) carboxylic acid anhydride, (c) carboxylic acid...
4830827 Method of inhibiting corrosion using perhydro-s-triazine derivatives  
Included are novel perhydro-s-triazine derivatives, tentacular-perhydro-s-triazines. For example, 1,3,5-triazine-1,3,5-(2H,4H,6H)triethanol dioleate; 1,3,5-triazine-1,3,5-(2H,4H,6H)triethanethiol...

Matches 1 - 50 out of 187 1 2 3 4 >