| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 166307000 | Attacking formation | 61 |
| 20080210427 | Methods Using Fluid Stream for Selective Stimulation of Reservoir Layers - A technique enables stimulation of a subterranean formation. A reactive fluid is delivered downhole into a wellbore. The reactive fluid is under sufficient pressure downhole to create a jet of the reactive fluid that is directed at a specific treatment section. The jet is maintained until a localized region of enhanced permeability is created. One or more jets can be created or moved to treat a plurality of low permeability zones. | 09-04-2008 |
| 20080314594 | Method of Heterogeneous Etching of Sandstone Formations - The invention provides a method of treating a sandstone-containing subterranean formation penetrated by a wellbore. The method is carried out by forming a slurry of a carrier fluid containing a viscosifying agent and encapsulated particles of a hydrogen fluoride source without settling of the particles. The carrier fluid may be an acid-based carrier fluid. The encapsulated hydrogen fluoride source may be encapsulated with a solid polymer acid precursor. The hydrogen fluoride source is present within the slurry in an amount of about 10% or more by weight of the slurry. The slurry is introduced into the wellbore at a pressure above the fracture pressure of the formation under conditions wherein the hydrogen fluoride source is released. | 12-25-2008 |
| 20090038803 | Pumping system for injecting a mixture of liquids via a well into a subterranean formation - A system and method to inject a combined hydrocarbon-based liquid stream and a liquid carbon dioxide stream into a subterranean formation via a well using a single high-pressure pump. | 02-12-2009 |
| 20090101349 | DEVICE AND SYSTEM FOR WELL COMPLETION AND CONTROL AND METHOD FOR COMPLETING AND CONTROLLING A WELL - A fracing and production configuration including a tubular having a plurality of openings. The openings having a beaded matrix therein, a valve sub in operable communication with the tubular and an underminable plugging material plugging each of the beaded matrixes. A method for fracing and producing from a wellbore in a formation. | 04-23-2009 |
| 20100200238 | Scale Inhibitors Compatible with Sandstone Acidizing - Methods are given for making scale inhibitors, that were previously incompatible with fluids containing fluoride ion, compatible with fluids containing fluoride ion. Examples of such scale inhibitors include phosphonates and phosphino-polycarboxylates. The method is replacing alkali metal and alkaline earth metal cations, present in salts or bases, or as counter ions of the scale inhibitors, with hydrogen or ammonium ions. Methods of inhibiting scale formation and of dissolving scales are also given. | 08-12-2010 |
| 20100230106 | Relative Permeability Modification - A fluid comprising a viscous hyposaline aqueous solution of first and second cationic polymers comprising quaternized ammonium groups, wherein the first cationic polymer comprises a hydrophilic base polymer structure and the second cationic polymer comprises a lipophilic base polymer structure, and a method comprising introducing the viscous fluid into an initial first interval of a subterranean formation, and diverting with the viscous fluid a treating fluid from the initial first interval to an initial second interval. The fluid and method are useful to modify a hydrocarbon reservoir formation for improved relative permeability of oil with respect to water to enhance hydrocarbon production from the reservoir. | 09-16-2010 |
| 20100252267 | PROCESS FOR TREATMENT OF UNDERGROUND FORMATIONS - A process for treating an underground formation, which process comprises: (a) introducing into the underground formation a treatment fluid comprising an organic acid precursor; (b) heating a zone within the formation, which zone contains at least a portion of the organic acid precursor, to a temperature which is above the natural formation temperature and sufficient to increase the rate of hydrolysis of the organic acid precursor; and (c) allowing the organic acid precursor to hydrolyse to produce an organic acid in an amount effective to acidize the underground formation. | 10-07-2010 |
| 20100288499 | Composition and method for stimulation of oil production in sandstone formations - A method and a composition for stimulating oil production from wells which have ceased production by pumping in a mixture of gluconic, oxalic and citric acids, isopropanol, ethylene glycol and sodium citrate between pre-flush and over-flush intervals, which composition and method does not include the use of hydrochloric acid or hydrofluoric acid. | 11-18-2010 |
| 20100314117 | ASPHALTENE REMOVAL COMPOSITION AND METHODS - This invention relates to compositions and methods of removing an organic deposit including introducing a fluid, wherein the fluid comprises at least two non-polar organic solvents and at least two polar organic solvents; allowing the fluid to dissolve at least a portion of the organic deposit; and removing at least a portion of the fluid. This invention relates to compositions and methods of removing an organic deposit including introducing a fluid, wherein the fluid comprises at least two non-polar organic solvents and at least two polar organic solvents, wherein the non-polar organic solvents comprise aromatic naphtha, terpenes, kerosene, and combination thereof, and wherein the polar solvents comprise heavy aromatic naphtha, cyclohexanone, N-2-methyl pyrrolidone, N-ethyl-2-pyrrolidone, and combination thereof, allowing the fluid to dissolve at least a portion of the organic deposit, and removing at least a portion of the fluid. | 12-16-2010 |
| 20100326663 | Split stream oilfield pumping system utilitzing recycled, high reid vapor pressure fluid - The present invention relates to a split stream oilfield pumping system which utilizes recycled high Reid vapor pressure production fluids. The oilfield system is made up of two separate fluid streams: a first recycled fluid stream and a second new fluid stream. The recycled fluid stream is enclosed to reduce or eliminate vaporization of the recycled fluid, which typically will have a Reid vapor pressure >14 kPa. Wellbore treatment additives are added to the new fluid stream, and the resultant treatment fluid is mixed with the recycled fluid in a common manifold to provide a final wellbore treatment fluid to be delivered to the wellhead. | 12-30-2010 |
| 20110278009 | METHOD OF DRILLING A WELLBORE - A method is disclosed of drilling a wellbore, the method comprising arranging a drill string and an expandable tubular element in the wellbore whereby a lower end portion of the wall of the tubular element extends radially outward and in axially reverse direction so as to form an expanded tubular section extending around a remaining tubular section of the tubular element, wherein the drill string extends through the remaining tubular section, and axially extending the expanded tubular section by moving the remaining tubular section downward relative to the expanded tubular section so that said lower end portion of the wall bends radially outward and in axially reverse direction, wherein the expanded tubular section covers the wellbore wall in an upper portion of the wellbore. The drill string is operated so as to drill a lower portion of the wellbore, and a compound is transferred between the lower portion of the wellbore and a layer of the earth formation surrounding the lower portion of the wellbore. | 11-17-2011 |
| 20110284227 | FORMATION TREATMENT EVALUATION - Measuring a parameter characteristic of a formation in an oil well with a device configured to generate a sensing field within a volume of the formation and cause a flow through the volume in the presence of the sensing field. The device also comprises sensors responsive to changes in the volume, which indicate existent amounts of fluid, such as hydrocarbon and water saturations and irreducible hydrocarbon and water saturations. Measurements may be made before the flow affects the measuring volume and after onset of the flow through the measuring volume. | 11-24-2011 |
| 20110297381 | MODERATION OF OIL EXTRACTION WASTE ENVIRONMENTS - An environment is moderated against microbial buildup, and especially bacterial buildup in an area where residual liquid wastes are collected or retained or added into natural ground formations. Water wastes are created, collected in storage areas or retained in natural land formations after the use of fluids to extract hydrocarbons contained in oil sand or oil shale or other hydrocarbon rich formations. The residual water wastes are of the type that generate or provide or promote in or above the fluid at least one waste selected from the group consisting of bacteria, carbon dioxide, hydrogen sulfide, ammonia, mercaptans and organic acids. A combination is provided of at least one of i) a friction reducing polymer for oil extraction and/or a polymer capable of absorbing at least ten times its weight in water (preferably a super-absorbing polymer) and ii) a combination of salts that react to liberate I | 12-08-2011 |
| 20120055675 | Method and Apparatus for Selective Acid Diversion in Matrix Acidizing Operations - An apparatus and method for selectively delivering a fluid to a targeted area through the use of vortices that are experiencing Taylor-Couette flow. Rotation of the outer surface of a body of the apparatus causes fluid within the annular area between a wellbore and the outer surface to form opposing vortices, which can then be used to selectively deliver the fluid to the targeted area, such as areas of low permeability of a reservoir, in order to improve flow characteristics of a producing area. | 03-08-2012 |
| 20120175120 | METHOD FOR INTERVENTION OPERATIONS IN SUBSURFACE HYDROCARBON FORMATIONS - Nanoparticles are added to a fluid containing a wetting agent and the fluid is pumped down a well to enhance wetting of solid surfaces in and around the well before pumping an acid solution down the well. After acid is pumped, a fluid containing nanoparticles and wetting agent is again pumped down the well, leading to improved flow capacity of the well. | 07-12-2012 |
| 20120181029 | NANOHYBRID-STABILIZED EMULSIONS AND METHODS OF USE IN OIL FIELD APPLICATIONS - Methods of using nanohybrid-stabilized emulsions in a well are provided. The methods include the steps of: (a) forming an emulsion comprising: (i) a nanohybrid; (ii) water or an aqueous solution; and (iii) a water-immiscible liquid; (b) introducing a well fluid comprising the emulsion into a well; and (c) after the step of introducing, modifying the nanohybrid to break the emulsion in the well. The methods can be used in various applications, such as in drilling, completion, or intervention operations. | 07-19-2012 |
| 20130000913 | Methods for Stimulating Oil or Gas Production Using a Viscosified Aqueous Fluid with a Chelating Agent to Remove Calcium Carbonate and Similar Materials from the Matrix of a Formation or a Proppant Pack - 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, and at least partially removing an iron-containing material in the subterranean formation using the GLDA. Treatment fluids used in the methods may have a pH equal to or greater than about 2. | 01-03-2013 |
| 20130087340 | CHEMOMECHANICAL TREATMENT FLUIDS AND METHODS OF USE - Methods and systems are provided for favorably altering the chemomechanical properties of subterranean formations using treatment fluids comprising surfactants and halide salts. Methods for treating formations comprise the steps of introducing a chemomechanical treatment fluid into the formation and allowing the treatment fluid to interact with the formation to alter its petrochemical properties in various ways. Depending on the application, the chemomechanical treatment fluid may comprise a base fluid, a halide salt and an amphoteric or nonamphoteric surfactant where the surfactant is dissolved in the base fluid at a concentration below its critical micelle concentration. Applications of use involving the chemomechanical treatment fluids include treatment operations, secondary recovery operations, drilling operations, and any other operation that would benefit from the formation property modifications described herein. Subterranean formation properties that may to be varied by the chemomechanical treatment fluid include fracture toughness, compressive strength, and tensile strength. | 04-11-2013 |
| 20130161011 | METHOD OF USING AN OXYGEN STREAM AS AN OXIDIZER FEED GAS STREAM - A method for producing nitrogen for injection into an enhanced oil recovery operation wherein the nitrogen is produced in an air separation device and the oxygen stream produced is not discarded but recovered and employed with or without an additional air gas stream for feeding to a partial oxidation unit/autothermal reformer and shift conversion to produce carbon dioxide and hydrogen. The carbon dioxide can additionally be used for injection into an enhanced oil recovery operation and the hydrogen can be used as a fuel for a gas turbine driven closed cycle power plant for providing energy to the air separation device. | 06-27-2013 |
| 20130161012 | METHOD OF USING A NON-ACIDIC STIMULATION FLUID IN HIGH TEMPERATURE SANDSTONE FORMATIONS - A three step method of using a non-acidic stimulation fluid in high temperature sandstone formation is provided. The method consists of using a preflush brine, a non-acidic stimulation fluid, and an overflush brine. | 06-27-2013 |
| 20130180720 | Non-Acidic Exothermic Sandstone Stimulation Fluids - Provided is a method and composition for the in-situ generation of synthetic sweet spots in tight-gas formations. The composition can include nitrogen generating compounds, which upon activation, react to generate heat and nitrogen gas. The method of using the composition includes injecting the composition into a tight-gas formation such that upon activation, the heat and nitrogen gas generated | 07-18-2013 |
| 20130306320 | COMPOSITION AND METHOD FOR TREATING CARBONATE RESERVOIRS - The composition and method for treating carbonate reservoirs provides a treatment fluid for the acid treatment of stratified subterranean formations. The treatment fluid is injected into a non-problematic or high permeability zone of a carbonate reservoir. The treatment fluid is formed from a zwitterionic viscoelastic surfactant, which forms about 7.5 vol % of the treatment fluid, hydrochloric acid forming about 15.0 vol % of the treatment fluid, and a corrosion inhibitor forming about 0.6 vol % of the treatment fluid, the balance being brine. The treatment fluid gels as the hydrochloric acid reacts with carbonate of the carbonate reservoir, thus forming a diverting block in the non-problematic or high permeability zone. Following formation of the diverting block, a further volume of the treatment fluid is injected into the carbonate reservoir. The diverting block diverts the treatment fluid into a problematic or low permeability zone of the carbonate reservoir. | 11-21-2013 |
| 20130312971 | ENHANCED HYDROCARBON RECOVERY METHOD COMPRISING OPTIMIZING THE INJECTION OF AN AQUEOUS CONDITIONING SOLUTION - The present invention relates to a method for enhanced hydrocarbon recovery in an underground reservoir rock comprising injecting an aqueous conditioning solution containing an alkaline agent, wherein the in-situ effects of the injection are determined by means of a flow simulation on a reservoir model discretized in cells, by taking into account the transport of the alkaline agent and without taking into account the transport of species referred to as intermediate species that result from the injection of the principal agent in aqueous solution, the intermediate species concentrations being determined analytically in each cell. | 11-28-2013 |
| 20140014346 | Method of Increasing Productivity of Oil, Gas, and Water Wells - A method of increasing productivity of oil, gas or water wells, includes the steps of excavating of a horizontal or inclined well, forming in the horizontal or inclined well a plurality of cavities which extend transversely to the direction of elongation of the horizontal or inclined well and are spaced from one another in a direction of elongation of the horizontal or inclined well so as to form a plurality of partitions therebetween, providing packing in the horizontal or inclined well by packers, and executing hydrocracking by acting onto the partitions located between the cavities inside the horizontal or inclined well. | 01-16-2014 |
| 20140054040 | METHODS TO ENHANCE MATRIX ACIDIZING IN LOW PERMEABILTY RESERVOIRS - The subject disclosure relates to matrix acidizing. More specifically, the subject disclosure relates to manipulating downhole pressure to promote in-situ mixing. In particular, downhole pressure is temporarily reduced to allow churning of the dissolved CO | 02-27-2014 |
| 20140076570 | Methods of Treating Long-Interval and High-Contrast Permeability Subterranean Formations with Diverting Fluids - Methods of treating a portion of a subterranean formation, including providing a treatment fluid comprising an aqueous base fluid, a treating agent, a foaming agent, a gas source, and a self-degradable diverting agent; placing the treatment fluid into the portion of the subterranean formation; and degrading the self-degradable diverting agent within the subterranean formation. | 03-20-2014 |
| 20140083707 | Highly-Concentrated Flowable Salts of Alkyl Polyalkoxy Sulphates - The present invention is directed to highly-concentrated compositions of salts of alkyl polyalkoxy sulphates, whereby in total at least ⅔ of all alkoxy unit of the alkyl polyalkoxy sulphates are propoxy units. | 03-27-2014 |
| 20140116707 | IN-SITU CROSSLINKING AND CALCIUM ION COMPLEXATION FOR ACIDIZING A SUBTERRANEAN FORMATION - A method of treating a zone of a subterranean formation penetrated by a wellbore, the method including the steps of: (a) forming a treatment fluid comprising: (i) water; (ii) a strong acid); (iii) a water-soluble polymer having at least one functional group that can be crosslinked with aluminum(III); (iv) a water-soluble aluminum carboxylate; and (v) a complexion agent for calcium ions; wherein the pH of the treatment fluid is less than the pH required for the aluminum to crosslink the polymer to form a crosslinked gel; (b) introducing the treatment fluid through the wellbore into the zone; and (c) allowing time for the strong acid in the treatment fluid to spend in the formation such that the pH of the fluid increases sufficiently for the aluminum of the aluminum carboxylate to crosslink the polymer. | 05-01-2014 |
| 20140116708 | SYNERGISTIC CORROSION INHIBITOR INTENSIFIERS FOR ACIDIZING EMULSIONS - Corrosion of steel is a major problem in acidizing operations in a well. A composition in the form of an emulsion is provided, the composition including: (i) a continuous oil phase; (ii) an internal aqueous acid phase adjacent the continuous oil phase; (iii) an emulsifier; (iv) a corrosion inhibitor; (v) a source of carboxylate ion selected from the group consisting of formic acid, oxalic acid, sodium formate, potassium formate, sodium oxalate, potassium oxalate, and any combination thereof; (vi) a source of iodide ion; and (vii) a source of cuprous ion. In addition, a method of acidizing a treatment zone of a subterranean formation penetrated by a wellbore of a well is provided. The method includes the steps of: (A) forming a treatment fluid comprising a composition according to the invention; and (B) introducing the treatment fluid into the well, wherein the design temperature is at least 280° F. | 05-01-2014 |
| 20140116709 | 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. | 05-01-2014 |
| 20140124205 | PROCESS TO FRACTURE A SUBTERRANEAN FORMATION USING A CHELATING AGENT - The present invention relates to a process for fracturing a subterranean formation comprising a step of fracturing the formation and a step of introducing a treatment fluid containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA), methylglycine N,N-diacetic acid or a salt thereof (MGDA) and/or N-hydroxyethyl ethylenediamine N,N′,N′-triacetic acid or a salt thereof (HEDTA) into the formation, wherein the fracturing step can take place before introducing the treatment fluid into the formation, while introducing the treatment fluid into the formation or subsequent to introducing the treatment fluid into the formation. | 05-08-2014 |
| 20140124206 | Methods of Using Fluid Loss Additives Comprising Micro Gels - Methods and fluids are provided that include, but are not limited to, a drilling fluid comprising an aqueous base fluid and a fluid loss control additive that comprises at least one polymeric micro gel and a method comprising: providing an aqueous based treatment fluid comprising a fluid loss control additive that comprises at least one polymeric micro gel; placing the aqueous based treatment fluid in a subterranean formation via a well bore penetrating the subterranean formation; allowing the fluid loss control additive to become incorporated into a filter cake located on a surface within the subterranean formation; allowing the filter cake to be degraded; and producing hydrocarbons from the formation. Additional methods are also provided. | 05-08-2014 |
| 20140166291 | SURFACTANT SYSTEM AS A SELF-DIVERTED ACID FOR WELL STIMULATION - A composition for acid stimulation of a subterranean formation, which is an acidizing fluid including a sulfobetaine surfactant, a polymeric associative thickener, and a short chain alcohol. The acidizing fluid comprises sufficient acid so as to be non-viscous when pumped into a wellbore and becomes viscous as acid is consumed by reaction with formation components and pH of the fluid rises. | 06-19-2014 |
| 20140190700 | COMPOSITIONS AND METHODS FOR CONTROLLING PARTICULATE MIGRATION IN A SUBTERRANEAN FORMATION - Stabilizers that include hydrophobically modified amine-containing polymers may be utilized as compositions or in methods for controlling particulate migration in a subterranean formation. For example, a method may include providing a treatment fluid that comprises a base fluid and a hydrophobically modified amine-containing polymer (HMAP), the HMAP comprising a plurality of hydrophobic modifications on an amine-containing polymer; introducing the treatment fluid into a wellbore penetrating a subterranean formation, the subterranean formation comprising a plurality of particulates; and allowing the HMAP to coat at least some of the particulates. | 07-10-2014 |
| 20140202701 | Iron Control Agents and Related Methods - The disclosure herein relates to iron control during subterranean operations, and more specifically, to reducing iron precipitation during subterranean operations to avoid formation damage; a method includes providing an acidizing treatment fluid that includes a polyepoxysuccinic acid and an acidizing agent, and placing the acidizing treatment fluid in a subterranean formation. | 07-24-2014 |
| 20140202702 | In-Line, High Pressure Well Fluid Injection Blending - A mixing device has an elongate shell, an inlet, an outlet and at least one shear orifice between the inlet and the outlet. A hydration passage is located between the shear orifice and the outlet. The hydration passage has a flow area greater than a total shear flow area of the shear orifice, greater than an inlet flow area of the inlet and greater than an outlet flow area of the outlet. During operation, a polymer is mixed in a fluid flow flowing to the intake of a positive displacement pump, which pumps the fluid through the mixing device and into an injection conduit leading into a well. The shear orifice produces high shear separation of molecules of the polymer. The hydration passage causes hydration under pressure of the various polymer molecules in addition to blending the various chemicals and/or gases with other components of the fluid flow stream. | 07-24-2014 |
| 20140209311 | EXTRACTION OF HYDROCARBONS FROM HYDROCARBON-CONTAINING MATERIALS AND/OR PROCESSING OF HYDROCARBON-CONTAINING MATERIALS - A method of extracting hydrocarbon-containing organic matter from a hydrocarbon-containing material includes the steps of providing a first liquid comprising a turpentine liquid; contacting the hydrocarbon-containing material with the turpentine liquid to form an extraction mixture; extracting the hydrocarbon material into the turpentine liquid; and separating the extracted hydrocarbon material from a residual material not extracted. | 07-31-2014 |
| 20140251622 | METHODS FOR PRODUCING AUTHIGENIC ROCK MINERAL FOR ALTERING ROCK HYDROLOGY - The present disclosure relates to methods of reversibly altering the rock hydrology in systems, such as oil reservoirs, by inducing authigenic mineral-precipitating bacteria to produce authigenic rock mineral. | 09-11-2014 |
| 20140262288 | SILOXANE SURFACTANT ADDITIVES FOR OIL AND GAS APPLICATIONS - A well treatment additive includes a siloxane surfactant, a solvent and an aqueous phase. The solvent is preferably a terpene hydrocarbon. Also disclosed is a method for using the well treatment additive to form and enhance the properties of terpene solvent based additives useful for the treatment of oil and gas wells. Methods of using the novel well treatment additives include using the additives in a variety of well treatment processes including, but not limited to, acidizing operations, hydraulic fracturing operations, well remediation operations and water removal operations. | 09-18-2014 |
| 20140262289 | Methods for Acidizing a Subterranean Formation Using a Stabilized Microemulsion Carrier Fluid - Acidizing fluids may be formulated to minimize the detrimental effects of precipitation during an acidizing operation by promoting production of precipitates from a subterranean formation. Methods for acidizing a subterranean formation can comprise: providing an acidizing fluid comprising a stabilized microemulsion carrier fluid, a chelating agent, and an acid source; introducing the acidizing fluid into a subterranean formation; at least partially dissolving a surface in the subterranean formation with the acidizing fluid, thereby forming a spent fluid; and producing the spent fluid from the subterranean formation. | 09-18-2014 |
| 20140311745 | Methods and Compositions of Treating Subterranean Formations with a Novel Resin System - Embodiments including methods of treating a subterranean formation comprising providing a solvent-based treatment fluid comprising a liquid resin agent, wherein the liquid resin agent comprises the reaction product of a multifunctional electrophilic compound comprising at least two electrophilic reactive groups and at least one nucleophilic compound selected from the group consisting of a dimer acid; a dimer diamine; any derivative thereof; and any combination thereof, and wherein the multifunctional electrophilic compound comprises at least two electrophilic reactive groups; introducing the solvent-based treatment fluid into the subterranean formation; and curing the liquid resin agent. | 10-23-2014 |
| 20140338914 | METHOD FOR ENHANCING THE PERMEABILITY OF A GEOLOGICAL FORMATION - A method for increasing the permeability of a geologic formation by fracturing includes the step of pumping a solution of a borohydride into a well bore. The solution may also include a basic material such as sodium hydroxide. This step may be followed by pumping a second acidic solution into the well bore. | 11-20-2014 |
| 20140338915 | PARTICLES CONTAINING ONE OR MORE CONTROLLED RELEASE CROSS-LINKED ACTIVE AGENTS - The present invention is directed to a cross-linked scale control agent particle comprising: a scale control agent and a cross-linker. The scale control agent is cross-linked by the cross-linker. The present invention is also directed to a cross-linked organic-based crystalline inhibitor particle comprising: an organic-based crystalline inhibitor and a cross-linker. The organic-based crystalline inhibitor is cross-linked by the cross-linker. The present invention is also directed to the use of cross-linkers which can also act as benefit agents and to the use of capping and extension agents which act as further benefit agents The present invention is further directed to a particle comprising more than one cross-linked active agents; the active agent may be a combination of a scale control agent and an organic-based crystalline inhibitor. The present invention is also directed to a method for producing the particles according to the present invention and methods for performing a mechanical fracturing operation, for reducing scale build up in an oil well and a cooling tower using the particles according to the present invention. | 11-20-2014 |
| 20140367108 | ACIDIZING COMPOSITIONS INCLUDING AMPHOLYTE POLYMERS - Various embodiments disclosed relate to acidizing compositions including an ampholyte polymer. Various embodiments provide a method of treating a subterranean formation. The method can include placing in a subterranean formation an ampholyte polymer including an ethylene repeating unit including a —C(O)NH | 12-18-2014 |
| 20140374107 | Methods and Systems for Acidizing Subterranean Formations with Treatment Fluids Containing Dual-Functioning Chelating Agents - When used outside the pH range at which metal ion complexation normally occurs, aminopolycarboxylic acids can moderate the reaction rate of acids with carbonate minerals. Methods for treating a subterranean formation can comprise: providing a treatment fluid comprising an aqueous carrier fluid, an acid, and a chelating agent comprising an aminopolycarboxylic acid, the treatment fluid having a pH below that at which the carboxylic acid groups of the chelating agent are substantially protonated and the chelating agent is ineffective for complexing a metal ion; introducing the treatment fluid into a subterranean formation comprising a carbonate mineral; reacting the acid with the carbonate mineral, such that the acid at least partially spends and the pH of the treatment fluid rises; and once the pH of the treatment fluid rises above a pK | 12-25-2014 |
| 20150060075 | OIL RECOVERY PROCESS - The present invention provides a method for enhancing the recovery of oil from a formation. An enhanced oil recovery formulation comprising a gas comprised of a hydrocarbon-containing gas and an ether having from 2 to 4 carbons is injected into an oil-bearing formation to mobilize the oil. The mobilized oil is then produced from the formation. | 03-05-2015 |
| 20150075797 | WELL TREATMENT - Rapidly pulsed injection fracture acidizing. A method comprises rapidly pulsed injection of a high reactivity fracture treatment fluid mode or substage alternated with one or more low reactivity treatment fluid modes or substages. | 03-19-2015 |
| 20150075798 | HYDROCARBON RECOVERY DISPERSIONS - Compositions and dispersions comprising hydrophobically modified polyacrylamide (HMPAM) or associative polymers and small particles useful in hydrocarbon recovery and enhanced oil recovery processes using the same. Non-limiting embodiments include those using metal oxide small particles, including fumed silica having primary particles in the nanoparticle size range. | 03-19-2015 |
| 20150096757 | OPTIMIZED SALINITY FOR ENHANCED WATER FLOOD APPLICATIONS - This invention relates to methods for enhanced oil recovery from subterranean formations. More particularly, it relates to methods for manipulating produced water compositions to increase the rate and/or amount of oil that is recovered from producing wells and/or a hydrocarbon reservoir. | 04-09-2015 |
| 20150122499 | AQUEOUS SOLUTION AND METHOD FOR USE THEREOF - Oilfield treatment compositions contain water, hydrochloric acid at a concentration between 15 wt % and 45.7 wt % and a first fixing agent. The first fixing agent comprises urea, a urea derivative or both. The molar ratio between the first fixing agent and water may be higher than or equal to 0.5, and urea is the dominant solvent species in the compositions. In these compositions the first fixing agent provides corrosion inhibition when exposed to steel. The compositions may also contain a second fixing agent and an inhibitor aid. | 05-07-2015 |
| 20150292311 | CONTROLLED RELEASE OF ACID IN A WELLBORE PENETRATING A CARBONACEOUS FORMATION - A method for controlled release of acid in a subterranean carbonaceous formation is achieved by placing in the openhole section of a wellbore within the formation a crosslinked acid of a volume substantially equal to the volume of the openhole section, then using tubing placed within the openhole section to circulate into the crosslinked acid a composition containing a breaker for the crosslinked acid at a matrix rate while removing the tubing from the openhole section, breaking the crosslinked acid while the tubing is removed, closing the backside and squeezing the uncrosslinked acid into the subterranean carbonaceous formation. In one non-limiting embodiment the openhole section may be substantially horizontal. | 10-15-2015 |
| 20150315873 | Delayed Opening Pressure Actuated Ported Sub for Subterranean Use - A ported sub is operated with a pressure actuated shifting sleeve. A first rupture disc is set at a lower pressure than the test pressure for the tubing string that houses the ported sub. The first rupture disc breaks at a lower pressure than the string test pressure to expose well fluids to a disintegrating plug. The plug disintegrates over time to then expose tubing pressure to a chamber and a second rupture disc with the chamber configured to have no effect on moving the sliding sleeve. When the tubing pressure is then raised to a predetermined pressure below the test pressure for the string, the second disc breaks exposing a piston to tubing pressure on one side and trapped low pressure being the opposite side of the string. The differential moves the sleeve to open a port to let tools be pumped into position without a need to perforate.a | 11-05-2015 |
| 20150330199 | METHOD FOR ENHANCING ACIDIZING TREATMENT OF A FORMATION HAVING A HIGH BOTTOM HOLE TEMPERATURE - An injection process to treat sandstone or limestone subterranean formations using carboxylic acids, dicarboxylic acids and/or aminocarboxylic acids (e.g. glutamic acid N,N-diacetic acid (GLDA); methylglycine N,N-diacetic acid (MGDA); diethylene triamine pentaacetic acid (DTPA), etc.), further involves at least a two step injection process which may include, in one non-limiting embodiment, injecting a relatively higher concentration of organic acid to create wormholes accompanied by a relatively lower concentration of the same or different organic acid to enhance the permeability of the formation. | 11-19-2015 |
| 20160017215 | ENCAPSULATION AND CONTROLLED DELIVERY OF STRONG MINERAL ACIDS - A polymer-encapsulated mineral acid solution and a method for forming the polymer-encapsulated mineral acid solution. Introducing a strong mineral acid solution to a monomer solution occurs such that a primary emulsion that is a water-in-oil type emulsion forms. Introducing the primary emulsion to a second aqueous solution forms a secondary emulsion that is a water-in-oil-in-water type double emulsion. The monomer in the secondary emulsion is cured such a polymerized shell forms that encapsulates the strong mineral acid solution and forms the capsule. The strong mineral acid solution has up to 30 wt. % strong mineral acid. A method of stimulating a hydrocarbon-bearing formation using the polymer-encapsulated mineral acid solution includes introducing a capsule suspension into a fissure in the hydrocarbon-bearing formation to be stimulated through a face in a well bore. The capsule is maintained within the fissure until the polymer shell degrades. | 01-21-2016 |
| 20160032176 | COMPOSITIONS AND METHODS FOR TREATING SUBTERRANEAN FORMATIONS - Methods for treating subterranean wells in which the producing formation is a carbonate comprise preparing a treatment fluid comprising either: (a) an aqueous solution of a multivalent-cation reacting polymer; (b) a solution comprising a fatty acid and an ethanolamine; (c) an aqueous acidic solution of one or more compounds whose calcium salts are insoluble; or (d) an aqueous solution comprising urea or alkane derivatives thereof or both and polyvinylpyrrolidone (PVP). The treatment fluid is placed in the well such that the solution contacts the carbonate formation at a pressure lower than the fracturing pressure. The treatment fluid is allowed to react with the carbonate formation, thereby depositing a film onto the formation surface or part of the formation surface. Then an acid solution is placed in the well such that the acid contacts the carbonate formation at a pressure lower than the fracturing pressure. | 02-04-2016 |
| 20160076347 | SELF-CONTAINED PORTABLE UNIT FOR STEAM GENERATION AND INJECTION BY MEANS OF INJECTOR WELLHEAD HANGER OF COILED JACKETED CAPILLARY TUBING WITH CLOSED CIRCUIT AND PROCEDURE FOR ITS OPERATION IN OIL WELLS - A self-contained portable unit for steam generation and injection by means of an injector wellhead hanger of coiled jacketed capillary tubing with a closed circuit and procedure for operation in oil wells comprises a portable, self-contained equipment for injection and dewaxing of heated fluids mounted on a hauler that includes a heat exchanger, a water tank, a heat exchanger, a softener, a centrifugal pum, a lubricant tank, a power engine, an electrical power generator, a control cabin, a fluids softener, a steam boiler, a reservoir tank, a fuel tank, a hose reel and one hose set for two lines of fluid injection and return of that connect to a wellhead hanger/injector for two capillaries making up a closed circuit. This wellhead includes three module and crowned with a lid, two of which are hangers and the rest are injection-type. | 03-17-2016 |
| 20160122618 | COMPOSITIONS INCLUDING A PARTICULATE BRIDGING AGENT AND FIBERS AND METHODS OF TREATING A SUBTERRANEAN FORMATION WITH THE SAME - The present invention relates to compositions including a particulate bridging agent and fibers, and methods of treating a subterranean formation with the same. In various embodiments, the present invention provides a method of treating a subterranean formation that includes obtaining or providing a composition including a particulate bridging agent and fibers. The method includes placing the composition in a subterranean formation. The method includes forming within the formation a bridging agent-fiber diverter. The bridging agent-fiber diverter is formed from the composition including the bridging agent and the fibers. | 05-05-2016 |
| 20160122625 | HYDROLYZABLE COMPOUNDS FOR TREATMENT OF A SUBTERRANEAN FORMATION AND METHODS OF USING THE SAME - The present invention relates to hydrolyzable compounds for treatment of a subterranean formation and methods of using the same. In various embodiments, the present invention provides a method of treating a subterranean formation including obtaining or providing a composition comprising a hydrolyzable compound comprising at least one of an ester and an anhydride. The method can include placing the composition in a subterranean formation, and at least partially hydrolyzing the hydrolyzable compound to reduce the pH downhole. In various embodiments, the subterranean formation can include a crosslinked gel, and the method can include at least partially breaking the crosslinked gel to provide a broken gel. The method can include at least partially removing the broken gel from the subterranean formation. | 05-05-2016 |
| 20160160108 | SOLIDS-FREE DIVERTING AGENTS AND METHODS RELATED THERETO - Diverting fluids may include a solids-free diverting agent having a non-dissolved suspended solids content of less than about 0.01% by weight of the solids-free diverting agent and comprising degradable polyesters dissolved in a water-miscible solvent. Method of utilizing such diverting fluids in subterranean operations may include providing a subterranean formation that comprises a first portion and a second portion, wherein the first portion has a higher permeability than the second portion; introducing the diverting fluid into the first portion; precipitating the degradable polyester in the diverting fluid by contacting at least a portion of the diverting fluid in the first portion with an aqueous fluid to form a precipitated degradable polyester, thereby reducing fluid flow into the first portion; diverting at least a portion of a treatment fluid to the second portion; and treating at least a portion of the second portion with the treatment fluid. | 06-09-2016 |
| 20160251947 | Methods of Modifying Formation Properties | 09-01-2016 |
| 20160251949 | Method and Apparatus for Wellbore Fluid Treatment | 09-01-2016 |
