Abstract: Compositions and methods for inhibiting corrosion of metal surfaces are disclosed herein. Also disclosed are methods of manufacturing the corrosion inhibitor compositions. A corrosion inhibitor composition may include an ether diamine compound. A corrosion inhibitor composition may include a sulfur-containing compound. A corrosion inhibitor composition may include an additional component and optionally a solvent.

Abstract: Methods and dispersing agents for dispersing a polymeric low dose hydrate inhibitor are disclosed. More specifically, the method comprises contacting an aqueous fluid containing a polymeric low dose hydrate inhibitor with a dispersing agent. The dispersing agent can be selected from the group consisting of a C1-C20 alkyl sulfate, a C10-C20 alkyl ether sulfate, a C10-C20 carbonyl sarcosinate, a C10-C20 alkylbenezene sulfonate, a quaternary-ammonium based corrosion inhibitor, a glycol ether, and a combination thereof.

Abstract: Downhole centrifugal pumps and related components and methods may include stationary diffusers housing impellers where the stationary diffusers have radial sidewalls defining a radially outer portion of each of the stationary diffusers. Coupling pins may extend between and engage with the radial sidewalls of the stationary diffusers to at least partially transfer a rotational force applied to one or more of the stationary diffusers to one or more of the remaining stationary diffusers.

Abstract: Downhole centrifugal pumps and related components and methods may include diffusers housing impellers and a rotational shaft passing through the impellers to impart rotation to the impellers. Bearings are positioned within at least some of the diffusers to support the rotational shaft during the rotation of the impellers. Coupling pins may be positioned between and engage with the bearings and the at least some of the diffusers to at least partially secure each of the bearings to one of the at least some of the diffusers.

Abstract: Methods for treating a producing wellbore of a subterranean reservoir include obtaining a side stream flow of a produced fluid from a production tube of the wellbore at a location above the surface of the earth; providing an eluting contact of the side stream flow of produced fluid with a treatment material to form a side stream flow of treated produced fluid; and directing the side stream flow of treated produced fluid into the wellbore at a point below the surface of the earth. Apparatuses suitable for carrying out the methods include an elution device fluidly connected to a side stream of produced fluid flowing above the surface of the earth and situated to direct the side stream toward the elution device to provide an eluting contact of the produced fluid with a treatment material disposed in the elution device, then direct the treated produced fluid into the wellbore.

Abstract: The present disclosure provides compositions and methods of inhibiting corrosion, including under-deposit corrosion, of a metal surface in contact with a medium. A method may include adding a composition to the metal surface. A composition may include a first reaction product, a second reaction product, a trimer acid, a solvent, and a viscosifier dimer acid. The first reaction product may be produced by reacting a first amine with a first carboxylic acid and a dimer acid. The second reaction product may be produced by reacting a second amine with a second carboxylic acid.

Abstract: The present disclosure generally relates to methods and compositions for treating subterranean formations. The compositions include a surfactant and may optionally include a solvent. The compositions may also include an additional component, such as a biocide, a scale inhibitor, and/or a corrosion inhibitor. The compositions may be used in methods for enhancing gas lift and increasing hydrocarbon production in subterranean formations.

Abstract: Compositions and methods for inhibiting corrosion of metal surfaces are disclosed herein. Also disclosed are methods of manufacturing the corrosion inhibitors compositions. The corrosion inhibitor compositions include a reaction product of maleated fatty imidazoline formed from a fatty acid, e.g., maleated tall oil fatty acid and/or a maleated soya acid, with one or more amines. The reaction product can be further reacted with one or more of acrylic acid or acetic acid to form derivatives of a maleated fatty imidazoline acrylate compound or a maleated fatty imidazoline acetate compound, respectively.

Abstract: A fluid system is disclosed which includes a storage tank formed to define a storage reservoir configured to store a supply of a fluid, a pump system having a pipe coupled to the storage tank and a pump in fluid communication with the storage reservoir of the tank through the pipe, a pressure sensor, and a pump inlet pressure stabilizer. Methods of using the fluid system are also provided herein.

Abstract: The present disclosure generally relates to corrosion inhibitor compositions and methods of using the compositions to inhibit corrosion. The corrosion inhibitor compositions include glucamide-containing compounds. The compositions can effectively inhibit corrosion of various metallic surfaces. The metallic surfaces may be found in a pipeline, a downhole tubular, a casing, a tank, a separator, a processing unit, and/or a filter, for example. The compositions may also include additional components, such as solvents, biocides, and scavengers.

Abstract: Systems and methods corresponding to a downhole measurement tool to balance fault current in a protective inductor are disclosed herein. A triggerable network is provided which keeps an alternating current balanced in a protective choke during a phase-to-ground fault condition in a power cable or a downhole motor of an electrical submersible pump. The triggerable network causes a conducting of current during negative polarity voltage portion(s) of the phase-to-ground fault condition via a silicon-controlled rectifier having an anode and a cathode on a path of current conduction for the negative polarity voltage during the phase-to-ground fault condition and one or more Zener diodes, where an ending cathode of the one or more Zener diodes is coupled to a gate of the silicon-controlled rectifier and an ending anode of the one or more Zener diodes is coupled to the anode of the silicon-controlled rectifier.

Abstract: The present disclosure relates to a ball check-valve assembly comprising a ball; a casing comprising an outer surface and defining an internal cavity extending within the casing, the internal cavity comprising a cylindrical inner wall; a bottom threaded connection at a downhole end of the casing, the bottom threaded connection comprising an opening therethrough to allow fluid passage into the internal cavity; a top threaded connection at an uphole end of the casing, at least three longitudinally extending guides defined within internal cylindrical cavity; and (f) a sealing surface formed in the casing and interposed between the top threaded connection and the internal cavity, the sealing surface further defining at least three quartic-shaped flow-passages extending from the sealing surface and providing for fluid passage through the sealing surface from the internal cavity to the uphole end of the casing.

Abstract: The present disclosure provides methods and compositions for controlling asphaltenes in a subterranean formation. The compositions may include silica, a polymer, and optionally a charged surfactant. The compositions may also include a solvent or other additives. The methods may include injecting the compositions into subterranean formations and inhibiting asphaltene precipitation.

Abstract: A polymer composition has been developed that comprising an oil-in-water emulsion comprising an aqueous phase comprising water and an emulsifying surfactant having a cloud point of less than 80° C. and a hydrophilic-lipophilic balance (HLB) of greater than or equal to 8, and an oil phase comprising a high molecular weight oil-soluble polymer, wherein the oil-soluble polymer comprises a copolymer derived from reaction of a hydrophobic monomer and an ionizable monomer in a weight ratio from about 999:1 to about 80:20. Methods of using the compositions for drag reduction and corrosion inhibition are also disclosed.

Abstract: Bearing assemblies, apparatuses, systems, and methods include bearing assemblies having one or more bearing element in a bearing housing for supporting a shaft extending through at least a portion of the bearing housing. The bearing assembly including a recirculation line for delivering fluid into the bearing housing at a location separate from a fluid inlet of the bearing housing to at least partially thermally regulate, lubricate, and/or flush the one or more bearing elements during operation of the shaft.

Abstract: A polymer composition has been developed that provides low viscosity oil-in-water polymer emulsions that release the polymer in the emulsion at a faster rate and without an additional surfactant when the emulsion is added to a hydrocarbon stream. Use of a temperature-sensitive emulsifying surfactant facilitates inversion of the oil-in-water polymer emulsion when applied to a hydrocarbon composition at a temperature sufficiently high to destabilize the emulsion. These compositions are particularly useful as drag reducers for delivery to a subsea flowline via an umbilical line.

Abstract: The present disclosure provides methods and compositions for controlling asphaltenes in a subterranean formation. The compositions may include a halloysite nanotube. The nanotube has a lumen and a polymer, along with a charged surfactant, may be disposed in the lumen. A wax may be disposed on the nanotube. The wax may be disposed at either or both ends of the nanotube, thereby temporarily preventing the polymer and charged surfactant from leaving the lumen.

Abstract: Imidazoline-derived compounds are used in compositions and methods for inhibiting natural gas hydrate agglomerates. The imidazoline-derived compounds are reaction products between a tall oil fatty acid and an amine. The methods include introducing a composition downhole, the composition comprising an imidazoline-derived compound formed by reacting a tall oil fatty acid with an amine; and contacting the composition with a downhole fluid to inhibit formation of hydrate agglomerates, wherein the downhole fluid comprises natural gas or hydrocarbons.

Abstract: Compositions and methods for inhibiting corrosion of metal surfaces are disclosed herein. Also disclosed are methods of manufacturing the corrosion inhibitors compositions. The corrosion inhibitor compositions may include the reaction product of a carbonyl and/or dicarbonyl compounds with thioalcohols. The compositions may include other corrosion inhibitors and/or additional components, such as a solvent, a hydrogen sulfide scavenger, or a biocide.

Abstract: A pipeline pig system is adapted to clean a pipe before applying a chemical to an interior wall of the pipe. The pipeline pig system includes a cleaning pig and an applicator pig. The applicator pig is configured to follow behind the cleaning pig as the cleaning pig and applicator pig move in a lateral direction through the pipe. Examples of chemicals include one or more of a corrosion inhibitor, a biocide, a paraffin inhibitor, an asphaltene inhibitor, a surface wetting agent, a cleaning compound, an iron chelator, a solvent, a dispersant, a surfactant, an internal film forming material, and a drag reducer.