| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 507129000 | Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding | 42 |
| 20120190595 | Carboxylic Acid and Oxidizer Clean-Up Compositions and Associated Methods of Use in Subterranean Applications - Methods of reducing the viscosity of a viscosified treatment fluid; providing a clean-up composition comprising a carboxylic acid; a chlorite-based breaker system comprising an alkali metal compound and an activator wherein the activator comprises a metal and an amine. Placing a viscosified treatment fluid in a subterranean formation via a well bore penetrating the subterranean formation; first contacting the viscosified treatment fluid with the chlorite-based breaker; and then contacting the viscosified treatment fluid with the clean-up composition; and, allowing the viscosity of the viscosified treatment fluid to reduce. | 07-26-2012 |
| 20100222241 | Clay Inhibitors for the Drilling Industry - The inhibition of hydration of clays in drilling operations may be accomplished using an aqueous based drilling fluid containing from 0.2 to 5 wt % of 1,2-cyclohexanediamine and/or its salts. | 09-02-2010 |
| 20100210482 | Wellbore servicing fluids comprising cationic polymers and methods of using same - A method comprising placing a wellbore servicing fluid comprising a cationic polymer into wellbore wherein the cationic polymer has a molecular weight of from about 300,000 Daltons to about 10,000,000 Daltons. A composition comprising a wellbore servicing fluid, a cationic polymer, and a brine. | 08-19-2010 |
| 20090075846 | 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 particular applicability in the displacement of oil base drilling muds and/or residues from such muds from producing wells. The water-in-oil emulsions may optionally contain a dispersing agent as well as a surfactant. | 03-19-2009 |
| 20100317549 | EMULSIFIER BLEND - An oil-in-water emulsion that includes a brine continuous phase; and an oleaginous discontinuous phase stabilized by an emulsifier blend, the emulsifier blend comprising: an emulsifier having an HLB greater than 11; and an amphoteric chemotrope is disclosed. Emulsifier blends comprising an emulsifier having an HLB greater than 11 and an amphoteric chemotrope and methods of using emulsifier blends are also disclosed | 12-16-2010 |
| 20090036330 | Inhibitive water-based drilling fluid system and method for drilling sands and other water-sensitive formations - An inhibitive water-based polymer mud system and method for using the system in drilling and in stabilizing wellbores is disclosed for use in water sensitive formations as an alternative to oil-based muds. The system comprises a substantially non-ionic low molecular weight polyacrylamide in combination with a substantially non-ionic high molecular weight polyacrylamide, preferably long chain alcohol or an amine or silicate shale inhibitor, and poly anionic cellulose. | 02-05-2009 |
| 20110009299 | EMULSION STABILIZING AGENTS FOR DRILLING AND COMPLETION FLUIDS - Of the many methods presented herein, one method comprises: providing a stabilized emulsion composition formed by combining components that comprise: an oleaginous fluid, a fluid that is at least partially immiscible with the oleaginous fluid, and an emulsion stabilizing agent, wherein the emulsion stabilizing agent comprises a first ionic compound soluble in the oleaginous fluid or the fluid that is at least partially immiscible with the oleaginous fluid, and a second ionic compound with a charge of opposite sign of the first ionic compound and that is at least partially soluble in the opposite fluid as the first ionic compound, and placing the stabilized emulsion composition in a subterranean formation as part of a subterranean application. | 01-13-2011 |
| 20090176666 | Drilling Fluids Containing Biodegradable Organophilic Clay - Drilling fluids are provided that comprise an organophilic clay treated with a quaternary ammonium surfactant having an amide linkage. The quaternary ammonium surfactant may comprise a compound generally represented by the following formula: | 07-09-2009 |
| 20120028855 | SHALE HYDRATION INHIBITION AGENT(S) AND METHOD OF USE - A method of using water-based drilling fluid in a subterranean formation containing shale which swells in the presence of water by circulating a water-based drilling fluid into the formation. The drilling fluid is made of an aqueous based continuous phase, a weighting material, and a shale hydration inhibition agent (SHIA) comprising deep eutectic solvents (DES) formed by the reaction of a first compound comprising an ammonium compound, and a second compound comprising at least one of amides, amines, diamines, cyclic amines, cyclic diamines, and combinations thereof. The SHIA is present in an amount sufficient to reduce shale swelling. A method of reducing shale swelling during wellbore drilling that includes providing a water-based drilling fluid comprising an aqueous based continuous phase, a weighting material, and a SHIA comprising DES formed by the reaction of a quaternary ammonium compound, and a diamine; and circulating the drilling fluid into the subterranean formation. | 02-02-2012 |
| 20120157354 | FRICTION REDUCER - Disclosed herein is a composition comprising from about 0.1 wt % to about 50 wt % of a plant based product comprising mucilage. Methods of making the composition, a well treatment fluid comprising the composition, and methods of using the composition are also disclosed. | 06-21-2012 |
| 20090131281 | Drilling Fluid containing hydrophobin - The present invention relates to the use of at least one hydrophobin or at least one hydrophobin derivative in a drilling mud. | 05-21-2009 |
| 20120129735 | NON-AQUEOUS DRILLING ADDITIVE USEFUL TO PRODUCE A FLAT TEMPERATURE-RHEOLOGY PROFILE - A method of providing a substantially constant equivalent circulating density of a drilling fluid over a temperature range of about 120° F. to about 40° F. includes adding a drilling fluid additive to the drilling fluid, wherein the drilling fluid additive includes the reaction product of a carboxylic acid with a single carboxylic moiety; and a polyamine having at least two primary amino functionalities and optionally at least one secondary amino functionality. | 05-24-2012 |
| 20100273684 | Method for enhancing stability of oil based drilling fluids at high temperatures - Methods for enhancing the stability of ester based drilling fluids for drilling, running casing in, and/or cementing a borehole in a subterranean formation are disclosed, as well as improved ester based drilling fluids for use at high temperatures. The advantages of the invention are realized by inhibiting hydrolysis of the esters in the drilling fluid by adding a monomeric or polymeric carbodiimide hydrolysis inhibitor to the drilling fluid. | 10-28-2010 |
| 20120094877 | CLAY INHIBITORS FOR THE DRILLING INDUSTRY - The hydration of clays in drilling operations can be inhibited by employing a an aqueous based drilling fluid containing from about 0.2 to about 5 wt % of a hydration inhibitor that comprises bis-hexamethylene-triamine, bis-hexamethylene-triamine salts, or mixtures thereof. | 04-19-2012 |
| 507130000 | Nitrogen is part of a hetero ring | 8 |
| 20130035264 | Constraining Pyrite Activity in Shale - Degeneration of shale caused by oxygen in aqueous drilling, fracturing and completion fluids is minimized by introducing imidazolines modified so that they will be attracted efficiently to pyrites in the shale, thereby forming a protective coating on the pyrites. Inhibiting oxidation of the pyrites sharply reduces physical degradation of the shale in the presence of drilling, fracturing and completion fluids carrying oxygen. The imidazoline is an ionic salt or a beatine. | 02-07-2013 |
| 20130096036 | NANOEMULSIONS - Nanoemulsions have been discovered to be useful to the oil field. More particularly water-in-oil (W/O), oil-in-water (O/W) and other classes of nanoemulsions have found beneficial application in drilling, completion, well remediation and other oil and gas industry related operations. Additionally, nanoemulsions may reduce friction pressure losses, as well as reduce subsidence of solid weight material during oil and gas operations. New preparation methods for nanoemulsions have also been discovered. | 04-18-2013 |
| 20130116155 | ANTICORROSIVE COMPOSITION BASED ON CHLORIDE IONS - The present invention relates to a powdery composition comprising a chloride selected from sodium chloride, magnesium chloride, calcium chloride, potassium chloride and mixtures thereof; metal particles of zinc and/or of aluminium and/or a metal salt; and optionally another corrosion inhibitor, and its method of preparation. It also relates to the use of metal particles in such compositions to protect steel or iron structures against the corrosion induced by chloride ions. | 05-09-2013 |
| 20090247429 | SHALE HYDRATION INHIBITION AGENT(S) AND METHOD OF USE - A water-based drilling fluid and method of using same are presented in this disclosure, which fluid is used in drilling wells through a formation containing a shale that swells in the presence of water. The drilling fluid comprises an aqueous based continuous phase; a weighting material; and a shale hydration inhibition agent (SHIA) selected from the group consisting of propylamine derivatives, hydrogenated poly(propyleneimine) dendrimers (HPPID), and polyamine twin dendrimers (PTD). In some embodiments, the SHIA of this disclosure is not hydrolyzed at a temperature in the range of from about 100° F. to about 500° F. The drilling fluid may further comprise a fluid loss control agent, an encapsulating agent, other additives, and combinations thereof. A method of reducing shale swelling during wellbore drilling is also described. The method comprises circulating in the subterranean well a water-based drilling fluid comprising an aqueous based continuous phase, a weighting material, and a SHIA. | 10-01-2009 |
| 20110152131 | 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 or dithiazine of the formula: | 06-23-2011 |
| 20100210483 | PROCESS FOR THE REMOVAL OF FILTERCAKES IN OIL WELLS - Process for the solubilization of polymeric material deposited on a porous medium, which comprises putting said polymeric material in contact with an aqueous composition comprising: (a) a catalyst selected from: (a1) a complex having general formula (I), Fe | 08-19-2010 |
| 20120088698 | WATER IN OIL EMULSION, METHOD FOR THE PRODUCTION THEREOF - The invention relates to inverse emulsions, comprising a) a hydrophobic liquid as a continuous phase, b) water as a disperse phase, and c) a compound of the formula (1), | 04-12-2012 |
| 20110160099 | INVERT EMULSION WELLBORE FLUIDS AND METHOD FOR REDUCING TOXICITY THEREOF - A method for reducing the toxicity of an invert emulsion wellbore fluid is disclosed. The method comprises forming an invert emulsion wellbore fluid comprising an oleaginous continuous phase, an aqueous discontinuous phase, and an emulsifying fluid, wherein the emulsifying fluid comprises a nitrogen-containing emulsifying agent and an alkalinity agent, and wherein the invert emulsion wellbore fluid produces an LC50 (SSP) of at least 30,000 parts per million at 3000° F. | 06-30-2011 |
| 507131000 | Oxygen is attached directly or indirectly to carbon by nonionic bonding | 20 |
| 20110166048 | ANTI-ACCRETION AGENTS FOR DRILLING FLUIDS - Esters of alkanolamines with unsaturated, polyunsaturated or saturated C | 07-07-2011 |
| 20130085087 | PYROMELLITAMIDE GELLING AGENTS - A downhole fluid comprises a base fluid, for example a hydrocarbon base fluid, and a pyromellitamide gelling agent. The pyromellitamide gelling agent may have the general formula of: | 04-04-2013 |
| 20130079258 | Spray Dried Emulsifier Compositions, Methods for Their Preparation, and Their Use in Oil-Based Drilling Fluid Compositions - Spray dried emulsifier compositions are described, which have desirable emulsifying and wetting characteristics. Among other advantages, the solid particulate emulsifier compositions greatly reduce transportation costs and simplify the logistics and environmental concerns associated with shipping large volumes of solvent-containing liquids. The emulsifier comprises (1) a carboxylic acid terminated fatty amine condensate or (2) a modified tall oil or (3) a blend of (1) and (2) that is converted to its alkali or alkaline earth metal salt and spray dried. | 03-28-2013 |
| 20100144561 | SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE - A water-base fluid for use in drilling, cementing, workover, fracturing and abandonment of subterranean wells through a formation containing a shale which swells in the presence of water. In one illustrative embodiment, the drilling fluid includes, an aqueous based continuous phase, a weighting agent, and a shale hydration inhibition agent. The shale hydration inhibition agent should have the general formula (I) in which R is independently selected from alkyls and hydroxyl alkyls comprising 1 to 15 carbon atoms, and X is an anion. The shale hydration inhibition agent is present in sufficient concentration to substantially reduce the swelling of shale drilling cuttings upon contact with the drilling fluid. The drilling fluid may be formulated to include a wide variety of components of aqueous based drilling fluids, such as weighting agents, fluid loss control agents, suspending agents, viscosifying agents, rheology control agents, as well as other compounds and materials known to one of skill in the art. The fluids may also be used in the disposal by reinjection of drilling cutting into a selected subterranean disposal formation. | 06-10-2010 |
| 20130123148 | USE OF POLYLYSINE AS A SHALE INHIBITOR - What is proposed is the use of hyperbranched polylysine in the development, exploitation and completion of underground mineral oil and natural gas deposits, and in deep wells, especially as a shale inhibitor in water-based drilling muds, completion fluids or stimulation fluids. | 05-16-2013 |
| 20120142561 | EQUIVALENT CIRCULATING DENSITY CONTROL IN DEEP WATER DRILLING - A method of providing a substantially constant rheological profile of a drilling fluid over a temperature range of about 120° F. to about 40° F. includes adding a drilling fluid additive to the drilling fluid, wherein the drilling fluid additive includes the reaction product of a carboxylic acid with at least two carboxylic moieties; and a polyamine having an amine functionality of two or more. A composition, such as an oil based drilling fluid, includes the reaction product of a carboxylic acid with at least two carboxylic moieties and a polyamine having an amine functionality of two or more. | 06-07-2012 |
| 20100144560 | METHODS AND COMPOSITIONS FOR REDUCING FLUID LOSS DURING TREATMENT WITH VISCOELASTIC SURFACTANT GELS - Methods and compositions of treating formations using viscoelastic treatment fluids are provided that reduce the amount of fluid loss to the formations due to the lack of polymer backbone in the viscoelastic treatment fluids. The methods and compositions of treating formations include a fluid loss additive that includes a copolymer that includes a hydrophilic monomeric unit and a first anchoring monomeric unit. | 06-10-2010 |
| 20090099046 | METHODS, DRILLING FLUIDS AND DRILLING FLUID ADDITIVES FOR LIMITING TAR SAND ACCRETION ON METAL SURFACES - Drilling fluids, drilling fluid additives and methods for oil well drilling feature quaternary ammonium salts and act to reduce accretion of bituminous material on metal surfaces of drilling equipment. | 04-16-2009 |
| 20110224109 | Reversible Peptide Surfactants For Oilfield Applications - The invention discloses a foam composition comprising a self-assembled, force-transmitting peptide network prepared by: a) dissolving or dispersing a peptide surfactant in a liquid to form a solution; and b) mixing the solution with a gas (e.g., nitrogen, carbon dioxide) to form a foam. | 09-15-2011 |
| 20090239771 | Swelling Inhibitors for Clays and Shales - Method for inhibiting the hydration of clays and shales during drilling operations comprising the use of a water base drilling fluid, which contains from 0.2 to 5% by weight of the condensation product of a dicarboxylic acid having 4 to 10 carbon atoms with alkanolamines, diamines or polyalkyleneamines of formula R′″R″N—R′—XH, where X is O or NR | 09-24-2009 |
| 20090318313 | Slickwater Treatment Fluid and Method - A treatment fluid for treating a subterranean formation penetrated by a wellbore is formed from water, a polyacrylamide in an amount of less than about 0.5% by weight of the fluid for reducing friction of the fluid and a stabilized peroxide breaker. A method of treating a subterranean formation penetrated by a wellbore is carried out by forming treatment fluid comprising water, a polyacrylamide in an amount of less than about 0.5% by weight of the fluid for reducing friction of the fluid and a stabilized peroxide breaker. The treatment fluid is introduced into the formation through the wellbore at a pressure above the fracture pressure of the formation. | 12-24-2009 |
| 20110190171 | LOW TOXICITY SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE - A low toxicity composition and method of reducing the swelling of clay in well comprising circulating in the well a water-based fluid comprising a functionally effective concentration of the additive formed from the following reaction of a tertiary amine of the following general formula: | 08-04-2011 |
| 20090325824 | MIXTURE FOR IMPROVED FOAMING IN THE EXTRACTION OF PETROLEUM OR NATURAL GAS - The invention relates to a composition for producing foams, in particular for mineral oil and natural gas production. | 12-31-2009 |
| 20100305008 | Organophilic Clay Additives And Oil Well Drilling Fluids With Less Temperature Dependent Rheological Properties - An additive composition including a synergistic combination of a hectorite organoclay composition and an attapulgite organoclay composition. The hectorite organoclay composition includes (i) a first organic cation provided by an alkoxylated quaternary ammonium salt; and ii) a second organic cation wherein such second organic cation is not provided by an alkoxylated quaternary ammonium salt. The attapulgite organoclay composition includes (iii) a third organic cation provided by an alkoxylated quaternary ammonium salt; and (iv) a fourth organic cation wherein such third organic cation is not provided by an alkoxylated quaternary ammonium salt. | 12-02-2010 |
| 20110306523 | Polyamide Emulsifier Based on Polyamines and Fatty Acid/Carboxylic Acid for Oil Based Drilling Fluid Applications - The present invention generally relates to emulsifiers for oil-based drilling fluids and muds comprising an emulsifier based on the polyamides derived from fatty acid/carboxylic acid and optionally alkoxylated polyamines. The invention also relates to oil or synthetic based drilling fluids comprising the emulsifiers of the invention and to drilling methods utilizing same. | 12-15-2011 |
| 20110021385 | SECONDARY EMULSIFIERS FOR INVERTED EMULSION FLUIDS AND METHODS FOR MAKING AND USING SAME - A new class of secondary emulsifying agents for use in inverted mud and other inverted system is disclosed and method for making and using same. | 01-27-2011 |
| 20100152068 | WELLBORE TREATMENT FLUID - A water-based wellbore treatment fluid contains: one or more viscoelastic-gelling carboxylic acids and/or alkali metal salts thereof; and one or more solubilising alkylolamines. The carboxylic acids and/or alkali metal salts and the alkylolamines are present in the fluid in respective amounts such that, at 25° C., the alkylolamines solubilise a sufficient portion of the carboxylic acids and/or alkali metal salts to render the fluid viscoelastic. A remaining portion of the carboxylic acids and/or alkali metal salts forms a suspension of solid particulates in the fluid. | 06-17-2010 |
| 507133000 | Organic component contains an ether linkage | 3 |
| 20080318810 | Self-Breakable Yield Point Enhancer for Oil Based Drilling Mud - The present invention relates to a liquid, self-breakable, temporary viscosifier agent (yield point enhancer) for oil based drilling muds, obtained by reacting one or more dicarboxylic fatty acids with a secondary dialkanolamine and thereafter with a tertiary tialkanolamine, and to oil based drilling muds containing it. | 12-25-2008 |
| 20100069269 | USE OF BETAINES AS FOAMING AGENTS AND FOAM DRAINAGE REDUCING AGENTS - The invention relates to the use of a betaine as a foaming agent and a foam drainage reducing agent. The invention also relates to the use of betaine in processes involving foam. | 03-18-2010 |
| 20120220501 | NON-AQUEOUS, ACID SOLUBLE, HIGH-DENSITY COMPLETION FLUIDS AND PROCESS - Disclosed herein is a method comprising displacing a first oil-based fluid present in an open hole interval of a wellbore with a second fluid; and contacting the second fluid with an acidic indigenous formation fluid to produce a third fluid wherein the second fluid an aqueous fluid dispersed as a discontinuous phase within an oleaginous fluid, and an amine surfactant, wherein the amine surfactant is selected such that contacting the second fluid with indigenous fluid protonates at least a portion of the amine surfactant in the second fluid to produce the third fluid comprising an emulsion comprising the oleaginous fluid reversibly dispersed as a discontinuous phase within the aqueous fluid. A system for treating a subterranean well and a fluid are also disclosed. | 08-30-2012 |
