Abstract: An automated method and system for identifying one or more chemical tracers present in a sample drawn downstream from the well head from a produced hydrocarbon oil/water stream in a pipeline from a downhole well completion, the one or more chemical tracers having originally been applied to the outer surface of one or more lengths of tubing placed at known locations in the assembly of the downhole well completion, the chemical identification of each of the tracers and the location of each of the tracers having been retrievably recorded for the well completion in the form of a relational database, by in situ testing of a portion of the aqueous layer of the sample following settling by means of an electrophoresis analysis system that includes a micro-fluidic chip and an electronic data information collection unit and signal communication means for transmitting conditioned data from the electronic data information collection unit to the central control station for comparison with, and identification of data assoc

Abstract: Systems and methods for hydraulically fracturing a subterranean formation include a fracturing assembly with a tool body having a central bore. A downhole isolating assembly is moveable between a downhole unengaged position and a downhole engaged position. A downhole piston assembly is moveable between a downhole piston contracted position and a downhole piston extended position and is operable to move the downhole isolating assembly between the downhole unengaged position and the downhole engaged position. An uphole isolating assembly is moveable between an uphole unengaged position and an uphole engaged position. An uphole piston assembly is moveable between an uphole piston contracted position and an uphole piston extended position, where the uphole piston assembly is operable to move the uphole isolating assembly between the uphole unengaged position and the uphole engaged position.

Abstract: Methods and systems for identifying a salinity gradient in a formation surrounding a bore of a subterranean well includes introducing an antenna assembly into the bore of the subterranean well. The antenna assembly has an elongated antenna body. An emitting antenna extends axially along an outer surface of the antenna body. A receiving antenna extends axially along the outer surface of the antenna body, the receiving antenna being spaced circumferentially apart from the emitting antenna. An electromagnetic interrogation wave is produced into the formation with the emitting antenna with a pulse duration of no greater than 0.01 seconds. A reflected wave is received with the receiving antenna. The amplitude of the reflected wave is analyzed to determine a distribution of chlorine ion concentration in the formation.

Abstract: A system and method for sealing permeability of a wellbore zone, including deploying a sealing assembly into the wellbore zone. The sealing assembly includes an expandable metal structure and polymer disposed on the expandable metal structure. The metal structure and polymer are expanded against a wall of the wellbore zone to plug the permeability.

Abstract: Current supplied to electrical submersible pumps in wells is monitored, and signal processing based on wavelet analysis and phase diagram analysis is performed on the data obtained from monitoring. An incipient malfunction of the electrical submersible pump, such as one due to scale build-up in and around the pump, can be detected at an early stage.

Abstract: The bluff body attaches to an elastic mount and is capable of generate vortex shedding when the elastic mount orients the bluff body in a flow-line traverse to a fluid flow and vibrates in response to the vortex shedding. A harvester is located within the bluff body and is capable of generating power above a specified threshold in response to the vibration.

Abstract: The bluff body attaches to an elastic mount and is capable of generate vortex shedding when the elastic mount orients the bluff body in a flow-line traverse to a fluid flow and vibrates in response to the vortex shedding. A harvester is located within the bluff body and is capable of generating power above a specified threshold in response to the vibration.

Abstract: A water cut measurement tool includes an elongated tubular section configured to flow a multiphase fluid including water and hydrocarbons. The elongated tubular section includes two portions. A first portion has a first diameter. A second portion is axially coupled to the first portion and has a second diameter less than the first diameter. The second portion can receive the multiphase fluid from the first portion. A first electrode is attached to an inner wall of the second portion. A second electrode is attached to the inner wall of the second portion and is positioned diametrically opposite to the first electrode. The two electrodes are configured to measure an impedance of the multiphase fluid flowed through the second portion responsive to a current flowed from the first electrode to the second electrode, and provide the impedance as an output.

Abstract: The bluff body attaches to an elastic mount and is capable of generate vortex shedding when the elastic mount orients the bluff body in a flow-line traverse to a fluid flow and vibrates in response to the vortex shedding. A harvester is located within the bluff body and is capable of generating power above a specified threshold in response to the vibration.

Abstract: The bluff body attaches to an elastic mount and is capable of generate vortex shedding when the elastic mount orients the bluff body in a flow-line traverse to a fluid flow and vibrates in response to the vortex shedding. A harvester is located within the bluff body and is capable of generating power above a specified threshold in response to the vibration.

Abstract: A flow meter includes a cylindrical tubing configured to be positioned in a wellbore, the cylindrical tubing including a flow mixer configured to produce a turbulent fluid flow of a multiphase fluid in the wellbore. The flow meter includes a tuning fork disposed in the cylindrical tubing separate from the flow mixer, the tuning fork configured to contact the turbulent fluid flow of the multiphase fluid and vibrate at a vibration frequency in response to contact with the turbulent fluid flow, and a controller to determine a fluid density measurement of the multiphase fluid based at least in part on the vibration frequency of the tuning fork.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for monitoring slug flow in subterranean wells. In one aspect, a method includes at a time instant, transmitting an acoustic signal across a cross-section of a pipeline flowing multiphase fluid including gaseous fluid and liquid fluid, wherein a portion of the acoustic signal is carried through the cross-section of the pipeline by the multiphase fluid and determining, at the time instant, a first quantity of the gaseous fluid and a second quantity of the liquid fluid passing the cross-section of the pipeline based, in part, on an energy of the portion of the acoustic signal carried through the cross-section and at least a portion of a total energy of the transmitted acoustic signal.

Abstract: Systems and methods for hydraulically fracturing a subterranean formation include a fracturing assembly with a tool body having a central bore. A downhole isolating assembly is moveable between a downhole unengaged position and a downhole engaged position. A downhole piston assembly is moveable between a downhole piston contracted position and a downhole piston extended position and is operable to move the downhole isolating assembly between the downhole unengaged position and the downhole engaged position. An uphole isolating assembly is moveable between an uphole unengaged position and an uphole engaged position. An uphole piston assembly is moveable between an uphole piston contracted position and an uphole piston extended position, where the uphole piston assembly is operable to move the uphole isolating assembly between the uphole unengaged position and the uphole engaged position.

Abstract: Some examples of a method for manufacturing an electrode material for electrolytic hydrogen generation are described. Tungsten salt and nickel salt are mixed in a determined molar ratio on a carbon support by effectively controlling synthesis temperature and composition. Water and adsorbed oxygen, produced by mixing the tungsten salt and nickel salt are removed. Then, methane gas is flowed over the mixture resulting in the electrode material. The electrode material is suitable for use as a catalyst in electrolytic hydrogen generation processes, for example, at an industrial scale, to produce large quantities of hydrogen.

Abstract: Systems, computer-implemented methods, and non-transitory computer-readable medium having a stored computer program provide characterization of multiphase fluid flow (MPF) using approximate entropy calculation techniques to enhance measuring and monitoring of a flow regime in a segment of pipe for hydrocarbon-production operations. The systems and methods can be optimized using principal component analysis.

Abstract: Systems, computer-implemented methods, and non-transitory computer-readable medium having a stored computer program provide characterization of multiphase fluid flow (MPF) using approximate entropy calculation techniques to enhance measuring and monitoring of a flow regime in a segment of pipe for hydrocarbon-production operations. The systems and methods can be optimized using principal component analysis.

Abstract: A system and method for delivering a treatment fluid to a wellbore by emulsifying the treatment fluid with a continuous fluid in a flowline. The treatment and continuous fluids are combined in a mixer that is separate from containers that retain the fluids. In an example where the mixer is a venturi, the continuous fluid flows into an inlet on an entrance end of the venturi, and the treatment fluid flows into an inlet that is at a flow restriction in the venturi. The continuous fluid experiences a localized decrease in pressure at the restriction, which is due to a localized increase in flow rate at the restriction. The pressure decrease induces the treatment fluid into the venturi, where the treatment fluid is dispersed into droplets within the continuous fluid, and that forms a treatment emulsion. The treatment fluid escapes from within the treatment emulsion when in the wellbore.

Abstract: Current supplied to electrical submersible pumps in wells is monitored, and signal processing based on wavelet analysis and phase diagram analysis is performed on the data obtained from monitoring. An incipient malfunction of the electrical submersible pump, such as one due to scale build-up in and around the pump, can be detected at an early stage.

Abstract: Current supplied to electrical submersible pumps in wells is monitored, and signal processing based on wavelet analysis and phase diagram analysis is performed on the data obtained from monitoring. An incipient malfunction of the electrical submersible pump, such as one due to scale build-up in and around the pump, can be detected at an early stage.

Abstract: Multiphase flow regimes in downhole or surface flow lines are made identifiable by forming images of the flow based on data obtained by flow regime metering of the flow. The flow regime metering data are gathered and processed in a format in which it can be subjected to face recognition processing of the type used for recognition of the faces of persons, and also to Bayesian classification techniques. Identification capabilities are particularly enhanced in flow regimes where gas bubbles or large amounts of free gas cause clutter and multiple reflections in the metering data.