| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 166304000 | Dissolving or preventing formation of solid oil deposit | 32 |
| 20080202756 | Magnetic Assemblies for Deposit Prevention - An apparatus and method for controlling and/or minimizing the formation or accumulation of unwanted deposits on the inside of fluid flow paths by employing at various locations along the path an assembly of permanent magnets oriented such that the fluid flow is preferably from the North magnetic pole to the South magnetic pole. | 08-28-2008 |
| 20090050325 | Enzyme enhanced oil recovery (EEOR) for near wellboretreatment of oil and gas with greater than 50% barrel of oil equivalent (BOE) gas production - Disclosed is a system for injecting an enzymatic fluid composition into a gas or gas and oil near-well bore having a wide temperature range. The enzymatic fluid composition is a treatment for reducing oil deposits, asphaltenes, waxes, scale, or other hydrocarbon materials in a gas well or a combination gas/oil well where the production of gas is greater than 50% on a barrel of oil equivalent (BOE) basis. | 02-26-2009 |
| 20090095481 | INSTALLATION FOR ENHANCED OIL RECOVERY USING WATER SOLUBLE POLYMERS, METHOD FOR IMPLEMENTING SAME - Installation for enhanced oil recovery comprising in succession: a polymer storage hopper, a grinding device, a dissolution/maturation tank for the dispersed polymer, and a pump for transferring pressurized polymer solution in the pipeline conveying the injection water for introducing the mixture of polymer and injection water into a well. The grinding device has a chamber for grinding and draining the dispersed polymer comprising a rotor and a stator, and on all or part of the periphery of the chamber, a ring fed by a secondary water circuit. The ring communicates with the chamber for spraying of pressurised water on the blades of the stator. A method implementing the installation is also provided. | 04-16-2009 |
| 20100065275 | Compositions and Methods for Hindering Asphaltene Deposition - Methods and compositions for hindering asphaltene deposition. One method comprising: identifying an interval of the subterranean formation to be treated with a relative permeability modifier to hinder subsequent asphaltene deposition; introducing the relative permeability modifier into the subterranean formation; and allowing the relative permeability modifier to contact the interval, thereby attaching to surfaces within the subterranean formation and hindering subsequent asphaltene deposition. | 03-18-2010 |
| 20100186958 | Treating Liquids In Oil Extraction - A method of treating liquid, particularly an oil/water mixture, in an oil well pipe, wherein a radio frequency propagating electrical field is established in the liquid in the pipe cause the formation of seed crystals or scale-forming material in the liquid, on which seed crystals asphaltenes and/or paraffin waxes in the liquid are deposited so that they are carried through the pipe with the liquid in preference to being deposited on the pipe wall. | 07-29-2010 |
| 20120000657 | Treatment fluid for wells drilled in oil mud, in the form of a delayed effect water-in-oil emulsion - The invention concerns a treatment fluid for wells drilled in oil mud in the form of an emulsion of water in oil comprising:
| 01-05-2012 |
| 20120090845 | Stabilizing Emulsified Acids for Carbonate Acidizing - Emulsified acids have been used to increase production rates of oil and gas in carbonate reservoirs through acid fracturing and matrix acidizing operations. An emulsifier is used to emulsify the aqueous acid with an oil, usually diesel. Very small particles, such as colloidal clay particles and/or nanoparticles increase the stability of the emulsified acids over an elevated temperature range. | 04-19-2012 |
| 20120318513 | CORRODIBLE DOWNHOLE ARTICLE AND METHOD OF REMOVING THE ARTICLE FROM DOWNHOLE ENVIRONMENT - A method of removing a corrodible downhole article having a surface coating includes eroding the surface coating by physical abrasion, chemical etching, or a combination of physical abrasion and chemical etching, the surface coating comprising a metallic layer of a metal resistant to corrosion by a corrosive material. | 12-20-2012 |
| 20130000910 | Composition and Method Relating to the Prevention and Remediation of Surfactant Gel Damage - Methods for treating a subterranean formation can comprise introducing a treatment fluid comprising dicarboxymethyl glutamic acid (GLDA) or a salt thereof into a subterranean formation. Methods for treating a sandstone formation can comprise introducing a treatment fluid comprising GLDA or a salt thereof into a sandstone formation, the treatment fluid having a pH above about 3. | 01-03-2013 |
| 20130048289 | SEALING SYSTEM, METHOD OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME - Disclosed herein is an apparatus for use downhole comprising an expandable component; a support member that has a selected corrosion rate; wherein the support member is disposed on the expandable component; where the support member comprises a plurality of particles fused together; the particles comprising a core comprising a first metal; and a first layer disposed upon the core; the first layer comprising a second metal; the first metal having a different corrosion potential from the second metal; the first layer comprising a third metal having a different corrosion potential from the first metal. | 02-28-2013 |
| 20130153230 | MITIGATION OF HYDRATES, PARAFFINS AND WAXES IN WELL TOOLS - A method of mitigating formation of an undesired accumulation of a substance in a well tool through which a well fluid flows can include heating a surrounding wall of an interior flow passage through which the well fluid flows. A system for of mitigating formation of an undesired accumulation of a substance in a well tool can include an interior flow passage having a surrounding wall, and a heater which heats the wall of the flow passage. Another method of mitigating formation of an undesired accumulation of a substance in a well tool can include monitoring the accumulation of the substance in the well tool, and heating a surrounding wall of an interior flow passage in response to detecting the accumulation. | 06-20-2013 |
| 20130248186 | METHOD FOR INHIBITING SCALE FORMATION IN OIL WELLS - An illustrative method of reducing an amount of treatment water injected into a subterranean well may include providing an environmentally friendly polymer, such as a biodegradable polymer (e.g., an aspartic acid based polymer), to the subterranean well. In some cases, the aspartic acid based polymer may include one or more of a copolymer of the aspartic acid based polymer, a terpolymer of the aspartic acid based polymer, an aspartic acid based polymer derivative, an aspartic acid based polymer having an end cap, and a soluble salt of the aspartic acid based polymer. In some cases, the treatment water use may be reduced within the range of about five percent to about ninety five percent. | 09-26-2013 |
| 20130327528 | Downhole Assembly for Treating Wellbore Components, and Method for Treating a Wellbore - A downhole assembly for delivering chemical treatment to a wellbore at the level of a hydrocarbon-bearing formation is provided. The chemical treatment is in solid phase, and slowly dissolves when exposed to wellbore fluids. A method of treating a wellbore using a solid chemical is also provided. | 12-12-2013 |
| 20140020898 | Sacrificial Plug for Use With a Well Screen Assembly - A well screen assembly for use downhole comprises a fluid pathway configured to provide fluid communication between an exterior of a wellbore tubular and an interior of the wellbore tubular, a flow restrictor disposed in the fluid pathway, and a plug disposed in series with the flow restrictor in the fluid pathway. The plug substantially prevents a fluid flow through the fluid pathway. The plug is configured to be at least partially dissolvable when contacted by a fluid, and the fluid comprises a chemical configured to dissolve the plug. | 01-23-2014 |
| 20140041873 | Method and Apparatus for Local Supply of a Treatment Fluid to a Well Portion - An apparatus is for supplying a treatment fluid to a well portion. A container is provided with a fluid chamber which is in closable fluid communication with at least one first outlet, the fluid chamber being defined by front and rear pistons. The front piston, in a starting position, forms a fluid barrier between the fluid chamber and the at least one first outlet, and the rear piston is provided with a rear piston rod projecting from a rear container end. A method is for supplying a treatment fluid to a well portion. | 02-13-2014 |
| 20140076567 | CORROSION INHIBITORS FOR OIL AND GAS APPLICATIONS - A corrosion inhibitor composition and method of inhibiting corrosion on a surface in an oil or gas application is disclosed and claimed. The corrosion inhibitor includes at least one fatty acid; at least one alkanolamine; at least one alkylamine; and at least one organic sulfonic acid. The method of inhibiting corrosion includes on a surface in an oil or gas application comprises contacting an effective dosage of the corrosion inhibitor with the surface. | 03-20-2014 |
| 20140151048 | USE OF OLIGO-QUATERNARY COMPOSITIONS TO INCREASE SCALE INHIBITOR LIFETIME IN A SUBTERRANEAN FORMATION - A method of inhibiting scale in a subterranean formation comprises pretreating the subterranean formation with a polyquaternary amine that serves as a squeeze life extention (SLE) agent, and then introducing a scale inhibitor pill into the subterranean formation, wherein the scale inhibitor pill includes one or more scale inhibitor compositions. For example, the polyquaternary amine may be a polymer having up to 5 quaternary amine centers, but is preferably a nonpolymeric diquaternary amine having a molecular weight of from 250 to 500. One such example is 1,3-propandiaminium, 2-hydroxy-N,N,N,N′,N′,N′-hexamethyl-, dichloride. The SLE agent is preferably introduced into the formation in a brine solution having a concentration from 0.1 to 20 weight percent. The SLE agents may be used with a variety of known scale inhibitors and scale inhibitor chemistries. | 06-05-2014 |
| 20140202700 | BIODEGRADABLE OIL EXTERNAL EMULSION FOR REMOVAL OF ASPHALTENE AND/OR PARAFFIN FROM PRODUCING OIL WELLS - A biodegradable and environmentally friendly oil external emulsion for the removal of asphaltenes, paraffin's, and/or scales which accumulate in the well bores and walls of the pipes used to bring the oil up from the underground deposits, and methods of using and formulating the composition are disclosed. The emulsion comprises oil extracted from orange peels as the external continuous phase and acid as the internal phase. The emulsion has a particular utility in cleaning asphaltenes and paraffin residues from the well formation surface, well cuttings, and down hole and surface oil well drilling and production equipment. | 07-24-2014 |
| 20140262280 | PREVENTION OF SLUDGE FORMATION DURING ACIDIZING PROCEDURES - The present disclosure provides chemical compositions useful for minimizing or preventing the precipitation of sludge, such as asphaltenes, maltenes, or similar asphaltic components, during an acidizing treatment. Methods for preventing or minimizing sludge formation are also disclosed. The anti-sludge compositions can be added to an aqueous acidic solution before injecting the solution into a well for treatment. The compositions can include a formulated dodecylbenzene sulfonic acid, a cationic surfactant, a corrosion inhibitor, and an iron reducing agent, in addition to other additives. | 09-18-2014 |
| 20140360727 | REMEDIATION OF ASPHALTENE-INDUCED PLUGGING OF AN OIL-BEARING FORMATION - A system and method for remediation of asphaltene-induced fouling of an oil-bearing formation is provided wherein an asphaltene solvent comprising at least 75 mol % dimethyl sulfide is introduced into an oil-bearing formation containing asphaltene deposits and the dimethyl sulfide is contacted with the asphaltene deposits. | 12-11-2014 |
| 20150129225 | METHOD OF INHIBITING SCALE IN A GEOLOGICAL FORMATION - The present invention relates to a method of inhibiting scale in a geological formation such as a hydrocarbon reservoir and a kit of parts for performing the method. | 05-14-2015 |
| 20150299553 | DISPERSION SOLUTION FOR DRILLING AND METHOD OF EXTRACTING UNDERGROUND RESOURCES USING THE DISPERSION SOLUTION - A dispersion solution for drilling obtained by dispersing, in an aqueous medium, a hydrolysable resin material that contains a resin that is hydrolysable but sparingly and a hydrolysable resin that accelerates the decomposition of esters. The dispersion solution for drilling exhibits a highly hydrolysable capability despite of using an inexpensive hydrolysable resin material, and can be favorably used for extracting resources relying on a well drilling method such as hydraulic fracturing method, rotary drilling method or riserless drilling method. | 10-22-2015 |
| 20150315876 | OIL WELL CLEANING COMPOSITIONS - A method for cleaning oil wells to increase the flow of oil thereof by use of a unique cleaning emulsion comprising of water, hydrocarbon solvent, terpene hydrocarbon material, demulsifier, detergent, and optionally an acid. This one step method provides for the simultaneously cleaning/removal of asphaltene and/or paraffin and scale at a wide range of temperatures. This method can be used alone or with the assistance of a wash tool which is a combination pressure and surge wash tool having a nipple assembly, or a hydro self-rotating nozzle wash tool. | 11-05-2015 |
| 20150322329 | METHODS AND SYSTEMS FOR IRON CONTROL USING A PHOSPHINATED CARBOXYLIC ACID POLYMER - The presence of iron in a subterranean formation, particularly ferric iron, can be problematic during an acidizing operation due to sludge formation that can occur. Methods for treating a subterranean formation in the presence of iron can comprise: providing a treatment fluid comprising an acid and an iron stabilization agent comprising a phosphinated carboxylic acid polymer, the treatment fluid having a pH of about 3 or below and the phosphinated carboxylic acid polymer being soluble in the treatment fluid; introducing the treatment fluid into a subterranean formation; and interacting the phosphinated carboxylic acid polymer with ferric iron in the subterranean formation. | 11-12-2015 |
| 20150337630 | SHOCK WAVES FOR PIPE CLEANING - A pipe cleaning apparatus includes a shock wave generating device of a shock wave module and a traction module with rollers connected to the shock wave module. The modules are connected by a joint permitting maneuverability around pipe bends. | 11-26-2015 |
| 20150345266 | METHOD AND APPARATUS FOR TREATING A SUBTERRANEAN REGION - A method for treating a subterranean region includes running a tubular string including a plurality of sealed fluid ports distributed along its length through an upper lined wellbore section and into a lower drilled bore section which intercepts a subterranean region, wherein the lower drilled bore section includes a first fluid. A second fluid is delivered through one of the tubular string and an annulus defined between the tubular string and a wall of the bore to displace the first fluid from the annulus, wherein fluid communication between the tubular member and the annulus is provided via a displacement port in a lower end region of the tubular string. At least one of the sealed fluid ports may subsequently be opened and a treating fluid is delivered through the tubular string and into the annulus via the at least one opened fluid port to treat the subterranean region. | 12-03-2015 |
| 20160096908 | LOW MOLECULAR WEIGHT GRAFT POLYMER FOR SCALE INHIBITOR - The presently disclosed and/or claimed concept(s) relates generally to a composition comprising a low molecular weight graft polymer. The graft polymer is a graft homopolymer, copolymer or terpolymer. Additionally, the presently disclosed and/or claimed inventive concept(s) relates to a scale inhibitor composition comprising the low molecular weight graft polymer. Furthermore, the presently disclosed and/or claimed inventive concept(s) relates to a process for preventing the deposition of scale from water or aqueous solution and a method for scale inhibition treatment of an oil or gas production well by using the low molecular weight graft polymer. The scale inhibitor is low corrosive for application in the oilfield. | 04-07-2016 |
| 20160108327 | CHEMICAL INHIBITORS WITH SUB-MICRON MATERIALS AS ADDITIVES FOR ENHANCED FLOW ASSURANCE - Methods may include admixing an additive composition with a hydrocarbon fluid, wherein the additive composition contains at least one inhibitor and at least one sub-micron particle. Additional methods may include providing an additive composition containing at least one inhibitor and at least one sub-micron particle; adding the additive composition to a fluid capable of precipitating at least one of at least of asphaltenes, wax, scale, and gas hydrates; and transporting the fluid containing the additive composition. | 04-21-2016 |
| 20160152885 | METHOD OF APPLYING SOLVENT TREATMENTS USING EMULSIONS | 06-02-2016 |
| 20160160111 | METHODS AND SYSTEMS FOR REMOVING GEOTHERMAL SCALE - Geothermal wells frequently form deposits of geothermal scale that can detrimentally affect subterranean operations. These deposits can be very difficult to remove from a surface. Conventional procedures for addressing geothermal scale often provide inadequate scale removal, in addition to creating a number of other issues. Methods for removing geothermal scale from a wellbore can comprise: introducing a descaling agent comprising an N-(phosphonoalkyl)iminodiacetic acid or any salt thereof into a wellbore of a geothermal well having geothermal scale present therein; contacting the geothermal scale with the descaling agent; and removing at least a portion of the geothermal scale from the geothermal well using the descaling agent. | 06-09-2016 |
| 20160168456 | DUAL PURPOSE VISCOSIFIER-SCALE INHIBITORS FOR USE IN SUBTERRANEAN FORMATION OPERATIONS | 06-16-2016 |
| 20160251940 | HIGH POWER LASER FLOW ASSURANCE SYSTEMS, TOOLS AND METHODS | 09-01-2016 |
