Abstract: A method comprising determining a concentration of one or more components of a wellbore servicing fluid during a wellbore servicing operation; and adjusting or maintaining a composition of the wellbore servicing fluid being introduced into a wellbore and/or an operational parameter of the wellbore servicing operation based on the determining of the concentration of the one or more components, wherein the determining of the concentration of the one or more components comprises contacting a sample of the wellbore servicing fluid with a microelectromechanical system (MEMS) device to provide a sample response indicative of the concentration of the one or more components.

Abstract: The present invention relates to a rheology modifier and to its use as thickener in oil-based subterranean treatment fluids; more particularly, the rheology modifier is an aqueous slurry of a pyromellitamide.

Abstract: The present disclosure is directed to stabilized drill cuttings and a process to stabilize the drill cuttings recovered from drilling a well. The cuttings are mixed with an emulsifier and waxy binding agent and then passed through a centrifuge to separate the stabilized drill cuttings from liquid. The stabilized drill cuttings can then be disposed in a suitable landfill. The stabilized cuttings may also be processed to remove oil and/or bitumen from them, prior to disposal.

Abstract: Fluids comprising oil; and an organophilic clay comprising a smectite clay modified by reaction with a protonated amphoteric surfactant. The smectite clay may be montmorillonite, beidellite, nontronite, or a combination thereof. The protonated amphoteric surfactant may be cetyl/myristyl amine oxide, a stearyl amine oxide, a stearyl betaine, or a combination thereof. In some cases, the fluid may also include water and/or a solid reactive metal.

Abstract: Methods of treating a gas field fluid or oil field fluid is provided, the method comprising: a) adding glutaraldehyde to the gas field fluid or oil field fluid in an amount effective to reduce or inhibit microbial activity; and b) after a delay, adding 3,5-dimethyl-1,3,5-thiadiazinane-2-thione to the gas field fluid or oil field fluid.

Abstract: Aqueous and substantially anhydrous fluids having particularly low thermal conductivities and variable densities are disclosed. The fluids include: one or more organic and/or inorganic salts and at least one aprotic polar organic solvent, a mixture of aprotic and protic polar organic solvents, and/or a polar organic solvent having both protic and aprotic polar functional group linkages. The fluids optionally include one or more viscosifying agents and are free of cross-linking agents. Methods for formulating and using the fluids are also disclosed.

Abstract: 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.

Abstract: A stable, aqueous composition containing a crosslinked, nonionic, amphiphilic polymer capable of forming a yield stress fluid in the presence of a surfactant is disclosed. The crosslinked, nonionic amphiphilic polymer is prepared by dispersion polymerization in the presence of a stabilizing polymer. The yield stress fluid is capable of suspending insoluble materials in the form of particulates and/or droplets requiring suspension or stabilization.

Abstract: Systems and methods for controlling microbial growth and/or activity in a gas field fluid or oil field fluid are provided, comprising: a) adding a first biocide component to the gas field fluid or oil field fluid in an amount effective to control microbial growth and/or activity; and b) after a delay, adding a second biocide component to the gas field fluid or oil field fluid.

Abstract: A drilling fluid including a drilling fluid medium selected from the group consisting of water, air and water, air and foaming agent, a water based mud, an oil based mud, a synthetic based fluid, and a composition thereof. The drilling fluid also includes at least one intercalation compound of a metal chalcogenide having molecular formula MX2, where M is a metallic element such as tungsten (W), and X is a chalcogen element such as sulfur (S), wherein the intercalation compound has a fullerene-like hollow structure or tubular-like structure.

Abstract: A downhole fluid comprises a base fluid, for example a hydrocarbon base fluid, a gelling agent, and a gel enhancer. The gelling agent has an aromatic core of one or more aromatic rings, the gelling agent having two or more amide branches distributed about the aromatic core, each of the two or more amide branches having one or more organic groups. An example gelling agent is a pyromellitamide gelling agent. A method of making a downhole fluid, the method comprising: combining a base fluid, a gelling agent, and a gel enhancer. A downhole fluid comprising a base fluid, a gelling agent, a breaker, and a gel enhancer. Downhole fluids with such gels and a breaker are also disclosed.

Abstract: Biocidal compositions and their use in aqueous media, such as metalworking fluids, the compositions comprising a biocidal agent; and a non-biocidal primary amino alcohol compound of the formula (I): wherein R1, R2, R3, R4, and R5 are as defined herein.

Abstract: An invert emulsion drilling fluid, and a method for the use thereof in drilling wellbores, with good rheological properties at high temperatures and pressures. One embodiment of the drilling fluids is free of organophilic clays and lignites, free of calcium chloride, and comprises glycerol in the internal phase, and a suspension agent comprising a combination of a fatty dimer diamine and a short chain acid, such as citric acid. In one embodiment, the base oil for the emulsion is a paraffin and/or mineral oil. The drilling fluids provide good rheological properties including good suspension of drill cuttings.

Abstract: A method of servicing a wellbore, comprising placing a wellbore servicing fluid comprising a transiently functional additive into a wellbore, wherein the transiently functional additive is a Diels-Alder reaction product. A method of servicing a wellbore comprising placing into a wellbore a wellbore servicing fluid comprising the reaction product of furan and maleimide. A consolidation fluid comprising a resin and the reaction product of furan and maleimide.

Abstract: 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, and the generation of undesirable oxides, in the presence of drilling, fracturing and completion fluids carrying oxygen. The imidazoline is an ionic salt of a monocarboxylic acid.

Abstract: A non-aqueous wellbore servicing fluid comprising a rheology modifier wherein the rheology modifier comprises a reaction product of a polysulfide, a dimer acid and a polyfunctional amine. A method of conducting an oilfield operation comprising placing an oil-based mud comprising a rheology modifier into a wellbore wherein the rheology modifier comprises a reaction product of a polysulfide, a dimer acid and a polyfunctional amine.

Abstract: A corrosion control system is disclosed including an anionic oxygen inhibitor, a cationic acid inhibitor or dispersant, and a noxious species inhibitor or scavenger for use in a fluid in contact with a metallic surface at low temperature, moderate temperature and especially at high temperature. A drilling fluid, a completion fluid, a production fluid and a geothermal fluid including an effective amount of the corrosion control system is also disclosed as well as methods for making and using same.

Abstract: A method of servicing a wellbore in contact with a subterranean formation, comprising placing a wellbore servicing fluid comprising a drilling fluid and lost circulation material into a lost circulation zone within the wellbore, wherein the lost circulation material comprises a polyelectrolyte multilayer material and a first counterion. A wellbore servicing fluid comprising a drilling fluid and a lost circulation material comprising a polyelectrolyte multilayer material and a counterion comprising a halide, wherein the LCM has a first state that is hydrophilic. A tunable lost circulation material comprising a base material, a polyelectrolyte multilayer on said base material, wherein the polyelectrolyte multilayer comprises a first electrolyte layer, a second electrolyte layer, and a charged surface, and a counterion, wherein wettability of the lost circulation material is a function of the counterion.

Abstract: Methods of treating a gas field fluid or oil field fluid is provided, the method comprising: a) adding glutaraldehyde to the gas field fluid or oil field fluid in an amount effective to reduce or inhibit microbial activity; and b) after a delay, adding 3,5-dimethyl-1,3,5-thiadiazinane-2-thione to the gas field fluid or oil field fluid.

Abstract: Additives and treatment fluids with improved shale inhibition, and associated methods of use in subterranean operations, are provided. The additives and treatment fluids used generally comprise a shale-inhibiting component and one or more silicates.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Method for controlling lost circulation in a subterranean well using oil-dispersible lost-circulation materials which comprise fibers that are coated (or sized) with a lipophilic coupling agent, a lipophilic film-forming polymer or both. The fibers are preferably between about 6 mm and about 25 mm long, and between about 10 ?m and about 200 ?m in diameter. The fibers may be added to carrier fluids comprising oil-base fluids, synthetic-base fluids, invert-emulsion-base fluids and combinations thereof. The preferred fiber concentration in the carrier fluid is between about 0.55 g/L and about 28.5 g/L. The carrier fluid may be a drilling fluid, a spacer fluid or a lost-circulation pill.

Abstract: A thermostable glycosidase enzymes derived from various Thermococcus, Staphylothermus and Pyrococcus organisms is disclosed. The enzymes are produced from native or recombinant host cells and can be utilized in the food processing industry, pharmaceutical industry and in the textile industry, detergent industry and in the baking industry.

Abstract: Polyhydroxyl functional compounds that contain an all hydrocarbon backbone, wherein all of the hydroxyl groups are bonded to a primary carbon atom, are prepared through the reaction of an alpha, omega-terminal diol having a total of from about 6 to about 42 carbon atoms terminated with a mono-ol having a total of from about 4 to about 42 carbon atoms. The polyols can be used as additives in hydrocarbon oils, drilling fluids, industrial and automotive lubricating fluids, dispersants, engine lubricants, greases, coatings, adhesives, and also in magnetorheological fluids to improve various properties such as dispersion, wear protection, reduction of friction, high temperature stability, and improved aging.

Abstract: A biocidal composition comprising 2,2-dibromomalonamide and an isothiazolinone-based biocide, and its use for the control of microorganisms in aqueous and water-containing systems.

Abstract: A fluorinated pyridinium cationic compound of formula (I) wherein, Rf is F(CF2)6(CH2CF2)m(CH2CH2)n—, m and n are each independently integers of 1 to 3, and R is H, C1 to C5 linear or branched alkyl, or C1 to C5 linear or branched alkoxy, having surfactant properties for lowering surface tension in an aqueous medium or solvent medium, and for use as a foaming agent.

Abstract: An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology at low mud weights and high temperatures. The improved rheology is effected with addition of hydrophobic amines, most preferably dimer diamines.

Abstract: 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), where R1 is a hydrocarbon group having between 6 and 30 C atoms or a group R5—O—X-M hydrogen, alkali metal, alkali earth metal, or an ammonia group, and where R5 is a hydrocarbon group having between 6 and 30 carbon atoms, X is C2-C6-alkylene or a poly(oxyalkylene) group of the formula, where l is a number between 1 and 50, m and n are numbers independent of l and of each other between 0 and 50, and R2, R3, R4 are independent of each other and is hydrogen, CH3, or CH2CH3, and Y is C2-C6-alkylene.

Abstract: A method comprises providing a drilling fluid comprising: an aqueous fluid; and a microemulsion surfactant; and drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the microemulsion surfactant forms a microemulsion with the oleaginous fluid within the well bore. In accordance with the method, the subterranean formation has a retained producibility greater than about 50%.

Abstract: 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.

Abstract: 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 (2,4,5-triamino-1,3,5-triazine), lithium carbonate, lithium phosphate (Li3PO4), and magnesium sulfite.

Abstract: 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.

Abstract: 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 consisting of a C1 to C12 saturated or unsaturated hydrocarbyl group or a C1 to C10 ?-hydroxy saturated or unsaturated hydrocarbyl group; R1 is selected from the group consisting of a C1-C24 straight chain or branched alkyl group or a C1-C24 arylalkyl; R2 is selected from the group consisting of X-R4-X, R4 being a C1-C6 alkyl group; and X is chlorine, bromine or iodine. The dithiazine may he isolated from a whole spent fluid formed by reaction of hydrogen sulfide and a triazine. Alternately, the whole spent fluid containing the dithiazine may be introduced into the well. The dithiazines of formulae (II) and (III) are quaternized derivatives of the dithiazine of formula (I).

Abstract: 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 penetrates a porous and permeable rock formation by placing in the wellbore a wellbore fluid containing a base fluid and melamine, and permitting the melamine to deposit from the wellbore fluid onto or into the walls of the wellbore to form the filter cake, whereby fluid loss to the formation through the removable filter cake is reduced.

Abstract: Additives and treatment fluids with improved shale inhibition, and associated methods of use in subterranean operations, are provided. The additives and treatment fluids used generally comprise a shale-inhibiting component and one or more silicates.

Abstract: Aqueous fluids for circulation through a well during drilling operations, especially drilling operations where shale and another clay bearing formations are encountered, and methods for circulating such clay stabilizing drilling fluids are provided for. The drilling fluid comprises an aqueous base fluid, a viscosifying polymer, a starch, and a chloride-free clay stabilizer. In one embodiment, the starch is selected from the group consisting of potato and corn starch and mixtures thereof and is present in relatively high amounts, i.e., starch in amounts from about 6 to about 18 lb/barrel of fluid, and stabilizer in amounts up to about 3% by volume of fluid. Other embodiments provide concentrations of polymer, starch, and clay stabilizer effective to provide the fluid with clay swelling of about 10% or less, preferably about 5% or less, and shale disintegration of about 10% or less, preferably about 5% or less. Preferably the novel fluids also comprise an environmentally friendly lubricant and surfactant.

Abstract: A downhole wellbore filtercake breaker is disclosed comprising one or more breaker chemicals (or activators thereof) capable of being activated with radiation to form one or more breaker reaction products which in turn are capable of reacting with the filtercake to chemically break down the filtercake. There is also disclosed a conventional reservoir drilling fluid modified to include an inactive, delayed, or sequestered breaker chemical or an activator thereof, wherein the breaker chemical (or activator) may be activated directly or indirectly by radiation, such as, microwave, visible, uV, soft x-ray, or other electromagnetic radiation. Also disclosed are methods for creating these filtercakes, and then breaking them via deploying a source of radiation that can be energized proximate to the filtercake. The breaker may be regenerated downhole by reaction with the filtercake breakdown products, and subjected again to a source of radiation to continue the breakdown of filtercake.

Abstract: The invention provides a wellbore fluid which comprises an aqueous continuous phase and, dissolved in said aqueous continuous phase, at least one salt containing an imidazolium cation having at least 6 carbon atoms, and a method of carrying out a wellbore operation, which comprises introducing into a wellbore in a clay-containing formation, a wellbore fluid according to the invention. The described salts are effective shale inhibitors.

Abstract: The invention provides a wellbore fluid which comprises an aqueous continuous phase and, dissolved in said aqueous continuous phase, at least one salt which exists in a liquid state at a temperature below 150° C. and which has an ammonium, phosphonium or sulfonium cation containing at least 5 carbon atoms, or a quaternised nitrogen-containing heterocyclic cation containing at least 6 carbon atoms; provided that said salt is not 2-hydroxy-N,N,N-trimethyl ethanaminium acetate; and a method of carrying out a wellbore operation, which comprises introducing into a wellbore in a clay-containing formation, a wellbore fluid according to the invention. The described salts are effective shale inhibitors.

Abstract: The present invention relates to subterranean drilling operations, and more particularly, to drilling fluids that may be used to drill a well bore in a subterranean formation that may demonstrate improved shale inhibition and methods of using such drilling fluids in subterranean formations. One embodiment of the methods of the present invention provides a method of drilling a well bore in a subterranean formation comprising providing a drilling fluid comprising an aqueous-based fluid and a shale inhibiting component comprising a nanoparticle source; and placing the drilling fluid in the well bore in the subterranean formation. Another embodiment of the present invention provides a method of flocculation comprising providing a fluid comprising suspended particles, and adding a shale inhibiting component comprising a nanoparticle source to the fluid comprising suspended particles to form flocculated particles.

Abstract: 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++(L)n(Y)s, L being a binder selected from those having general formula (II), wherein X?CH, N, (a2) a hydrosoluble cobalt2+ salt, preferably cobalt acetate; (b) an oxidizing agent selected from: (b1) hydrogen peroxide, (b2) MHSO5, wherein M is an alkaline metal, preferably potassium; with the constraint that the catalyst (a1) can only be used in the presence of the oxidizing agent (b1) and the catalyst (a2) can only be used in the presence of the catalyst (b2).

Abstract: The present invention relates to a composition of citric acid based emulsifiers comprising polyamides for oilfield drilling applications that exhibit very low fluorescence, and to a process for their preparation.

Abstract: 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.

Abstract: 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.

Abstract: An electropositive and water-based production well treating fluid system exhibits electropositivity by using a cationic viscosifier meanwhile matched with a cationic fluid loss additive and, optionally, contains a mud-building agent, an electrical stabilizing agent, a colloid-stabilizing agent, lubricant, an oil layer protective agent and/or a weighting agent. The electropositive production well treating fluid can beffer solve the contradiction of technical requirements between “treating fluid stability” and “bore hole stability”, and features a strong ability to inhibit the dispersion of clay, a good effect of protecting oil-gas reservoirs, fast drilling speeds, regular shape of bore holes and good resistance to salt.

Abstract: The present invention relates to subterranean treatment fluids. In particular, the present invention relates to subterranean treatment fluid compositions that comprise polyoxazoline compositions and methods for using such compositions in subterranean applications. In one embodiment, the present invention provides a method of controlling shale swelling in a subterranean formation comprising introducing a treatment fluid into the subterranean formation, wherein the treatment fluid comprises a base fluid and a polyoxazoline composition. In another embodiment, the present invention provides a method of treating a portion of a subterranean formation comprising the steps of: introducing a treatment fluid that comprises a base fluid and a polyoxazoline composition; and treating a portion of the subterranean formation. Other embodiments are provided.

Abstract: Drilling fluid additives that act to control clay swelling in drilled formations without adversely effecting the properties of the drilling fluid. The drilling fluid additives preferably comprise a polyether amine, a polyether amine derivative, or mixtures thereof. Drilling fluids that comprise such drilling fluid additives and a method of reducing clay swelling in drilled formations are also disclosed.

Abstract: A method for controlling the rheology of aqueous systems, particularly for those intended for underground use, includes injecting an aqueous fluid containing a surfactant gelling agent into the system. The surfactant gelling agents are, for example, fatty aliphatic amidoamine oxides, salts of an alkoxylated monoamine with an aromatic dicarboxylic acid, and salts of an alkyldiamine with an aromatic dicarboxylic acid. The surfactant gelling agents can be absorbed onto particulate supports to facilitate delivery of the gelling agent. The additives may be incorporated in the viscoelastic fluid to tailor its use in hydraulic fluids, drilling muds, fracture fluids, and in applications such as permeability modification, gravel packing, cementing, and the like.