Abstract: The systems and methods described in this specification relate to generating a low frequency model of a subterranean formation for performing a seismic inversion. The systems and methods receive seismic data for a first region of the subterranean formation and well log data of one or more wells located at the first region. The systems and methods determine one or more relative layer attributes of the first region, one or more first input values for a machine learning model, and one or more second input values for the machine learning model. The systems and methods generate, a first relative low frequency model for the first region, and extrapolate, by executing the machine learning model by the processor, the first relative low frequency model to a second region of the subterranean formation.

Abstract: Methods and systems for wellbore path planning are disclosed. The method includes defining total depth coordinates of a candidate wellbore path within a hydrocarbon reservoir, obtaining geoscience data for a subterranean region enclosing the hydrocarbon reservoir, and obtaining historical drilling data from an offset well in the subterranean region. The method further includes training a machine learning network to predict drilling hazard probabilities along the candidate wellbore path using the geoscience data and the historical drilling data. The method still further includes determining a first wellbore path to terminate at the total depth coordinates using the candidate wellbore path and the trained machine learning network.

Abstract: A cementing string assembly for cementing a liner in a wellbore includes a drill pipe, a liner hanger running tool attached to the drill pipe, a liner releasably secured to the liner hanger running tool, an upper wiper plug disposed within the liner and releasably secured to the liner hanger running tool or to the liner, and a lower wiper plug disposed within the liner and releasably secured to the liner downhole of the upper wiper plug. The lower wiper plug is detached from the upper wiper plug. The lower wiper plug is releasably secured to an inner surface of the liner by a wiper plug hanging collar and is releasable from the liner independent of the upper wiper plug and without exerting forces on the upper wiper plug. The cementing string assembly prevent premature and unintentional release of the upper wiper plug while releasing the lower wiper plug.

Abstract: A downhole vibration tool includes a head unit, a housing, a power system, a control system, at least one electrical motor, an engagement system, at least one vibration module, and at least one tractor section. The head unit is configured to attach to a conveyance system in a wellbore. The housing is configured to receive the cable head and house the power system, the control system, the at least one electrical motor, the engagement system, the vibration module and the at least one tractor section. The engagement system is configured to extend outward from the housing and contact the wellbore.

Abstract: A process for reducing the interfacial tension between a hydrocarbon fluid and a surfactant mixture during chemical enhanced oil recovery includes introducing a surfactant mixture solution comprising an anionic surfactant, a cationic surfactant, a nonionic surfactant, a brine solution, and a co-solvent to a hydrocarbon-bearing reservoir under conditions of a salinity of greater than or equal to 50,000 mg/L, a hardness of greater than or equal to 2,500 mg/L, and a temperature of greater than or equal to 90° C., thereby reducing the interfacial tension at a liquid-liquid interface of the hydrocarbon fluid and the surfactant mixture solution. The anionic surfactant comprises organo sulfate. The cationic surfactant comprises quaternary ammonium, brominated trimethylammonium, chloride trimethylammonium, or combinations thereof. The nonionic surfactant comprises polyoxyethylene fatty acid ester, phenylated ethoxylate, or combinations thereof.

Abstract: A method may include receiving a core description comprising a plurality of lithofacies and at least one sequence boundary, generating a depositional ordering model of the plurality of lithofacies from the core description, and using the depositional ordering model to construct a 2D depositional model of a horizontal arrangement of the plurality of lithofacies.

Abstract: A process of producing a mesoporous beta zeolite includes mixing a crystalline beta zeolite with one or more solvents, cetyltrimethylammonium bromide, and metal hydroxide to produce a solution, heating the solution at a temperature of from 50° C. to 150° C. to convert the crystalline beta zeolite to a non-crystalline material with reduced silica content relative to the crystalline beta zeolite, cooling the solution to a temperature of from 25° C. to 40° C., adjusting the pH of the solution to from 8 to 10 by adding an acid, and aging the solution at a temperature of from 50° C. to 150° C. for a time period sufficient to crystalize the non-crystalline material to produce beta zeolite particles.

Abstract: A combined chemical injection and mixing system including an injection stream pipe, a target pipe disposed within the injection stream pipe, and a plurality of injection quills is described. The injection stream pipe encloses the plurality of injection quills, and the plurality of injection quills each independently includes a quill check valve and a quill flange. A method for mixing at least one chemical in a pipeline is also described. The method includes providing a chemical injection and mixing system configured to a pipeline, forming a pipeline treatment system, providing a fluid flow in the pipeline treatment system, injecting at least one chemical via the plurality of injection quills, and mixing the at least one injected chemical in a mixing zone of the chemical injection and mixing system, thereby mixing the at least one injected chemical in the fluid flow.

Abstract: A method and a system for tracking a concentration of pollution elements in air are disclosed. The system includes a plurality of air pollutant monitoring stations configured to obtain data from a plurality of air samples and an information logger that communicates with the plurality of the air pollutant monitoring stations and that is configured to collect and organize the data obtained from the plurality of the air pollutant monitoring stations in the real time or periodically. Further, a data storage is engaged with the information logger and stores the collected data into a relational database, creates triggers for instances when air pollution parameters exceed a given limit value, and triggers an alert.

Abstract: A system includes an electric submersible pump (ESP) assembly configured to transport a fluid in a casing string of a well to a surface location. The ESP includes a pump configured to receive, upon activation, the fluid through a pump intake and vent the fluid through a pump discharge; an output shaft extending downhole from and fixed to the pump; and a control valve assembly. The control valve assembly includes a movable core of an electromagnet movable along a central axis of the system; a generator attached to the electromagnet, configured to generate electrical power to pull the movable core in an uphole direction upon activation of the pump of the electric submersible pump assembly; a shaft coupler coupling a generator input shaft and the output shaft; and a stinger having a conduit for the fluid to flow from the casing string to the pump intake.

Abstract: A system for securely transmitting data includes a data network that connects to an internet network using an internet protocol. The system also includes a user equipment (UE) that transmits a request to access enterprise data, and a base station that receives and forwards the access request to an enterprise platform. The enterprise platform includes a Multi-access Edge Computing (MEC) server that receives and forwards the access request to an enterprise server that accesses a data center storing the enterprise data. Within the enterprise platform, a first security module receives the access request from the base station, determines that an access request is secure, and forwards secure access requests to the MEC server through an encrypted connection. The MEC server transmits the processed data through the first security module to the base station and the UE, which are connected to the internet network with the first security module.

Abstract: A well system includes a wellbore penetrating a subterranean formation, production tubing extended into the wellbore and terminating at a completion string, and one or more inflow control devices forming part of the completion string. The inflow control device includes a base pipe defining one or more first flow ports and one or more second flow ports axially spaced from the first flow ports. A first flow regulation device is arranged within the base pipe and actuatable to expose or occlude the first flow ports, and a second flow regulation device is arranged within the base pipe and actuatable to expose or occlude the second flow ports. A downhole shifting device is operable to independently manipulate a position of the first and second flow regulation devices and thereby selectively expose or occlude the first or second flow ports.

Abstract: A layered photovoltaic device and a composition for a topcoat of a photovoltaic device are described. The layers of the photovoltaic device include a topcoat and a silicon cell. The topcoat includes one or more first nanoparticles and a polymer. The first nanoparticles comprise a lattice material and two or more Lanthanide ions. The topcoat composition comprises a polymer and one or more first nanoparticles dispersed within the polymer. The one or more nanoparticles comprise a lattice including a first material comprising ytterbium.

Abstract: A system includes an electric submersible pump and a flow regulating valve. The electrical submersible pump includes a pump that, when activated, receives a fluid disposed within a production tubing of a well through a pump intake and vents the fluid through a pump discharge to a surface location. The flow regulating valve includes a flow tube that blocks the fluid from entering the pump intake when the pump is inactive, a piston, connected to the flow tube, that moves the flow tube within the flow regulating valve, and a stinger that includes a conduit for the fluid to flow from the production tubing to the pump. The flow regulating valve further includes a spring that positions the piston within the flow regulating valve when the pump is inactive and a plurality of seals that pressure-seal a pressure chamber which houses a pressure force that is to be applied upon the piston.

Abstract: A method includes preparing an alkyl-modified graphene oxide, injecting the modified graphene oxide into a well, and inhibiting acid-induced corrosion of a steel surface in the well with the modified graphene oxide. A composition includes an alkyl-modified graphene oxide having one or more alkyl functional group covalently bonded to a graphene core through an oxygen-containing linking group. A method of preparing modified graphene oxide includes mixing graphite powder with an oxidant to provide a mixture, adding the mixture to an acid solution including H2SO4, H3PO4, or a combination thereof to provide graphene oxide, and reacting the graphene oxide with an alkyl halide by nucleophilic substitution to provide the alkyl-modified graphene oxide.

Abstract: A system includes a tubing head, a bushing profile, and a wear bushing. The tubing head is connected to the casing head. The bushing profile is formed by a tubing head inner surface of the tubing head. The wear bushing has a bushing external surface configured to mate with the bushing profile.

Abstract: A method may include determining various migrated azimuthal dip-angle gathers based on a migration function and seismic data from a seismic survey regarding a geological region of interest. The method may further include determining various partial dip-angle images using the migrated azimuthal dip-angle gathers. The method may further include determining various azimuthal bins that include the partial dip-angle images. The method may further include determining various wavefield components using an independent component analysis (ICA) function and the partial dip-angle images among the azimuthal bins. The method may further include determining a geological feature within the geological region of interest using the wavefield components.

Abstract: A method for accelerating numerical solution of a differential equation representing fluid flow in porous media associated with hydrocarbon well environments involves obtaining input data associated with a previous timestep of a numerical solver operating on the differential equation, predicting, by a machine learning model, a current timestep size for the numerical solver from the previous timestep to a current timestep immediately following the previous timestep, and executing the numerical solver using the current timestep size on the differential equation to generate a simulation output for the current timestep.

Abstract: A system includes an electric submersible pump assembly and a control valve assembly. The electric submersible pump assembly transports a fluid in a casing string of a well to a surface location and includes a pump that receives the fluid through a pump intake and vents the fluid through a pump discharge when activated. The electric submersible pump assembly further includes a shaft that is fixed to the pump and extends downhole from the pump. The control valve assembly includes a propeller shaft axially movable along a central axis of the system, a propeller attached to the propeller shaft that pushes the propeller shaft downhole when the pump of the electric submersible pump assembly is active, a shaft coupler that connects the propeller shaft and the shaft of the electric submersible pump assembly, and a stinger that has a conduit for the fluid to flow from the casing string to the pump intake.

Abstract: In some examples, a method can include determining a number of mobile stations that have been used by users to implement a call during a period of time using a base station of a telecommunications network based on traffic data, and determining that the number of mobile stations is equal to or within a value or range of a base station support threshold for the base station, which indicates that there is a probability that a given mobile station of mobile stations will be blocked or denied access from initiating a respective call in using the base station. The method further can include determining a number of additional channels that are needed for the base station to reduce the probability that the given mobile station of the mobile stations will be blocked or denied access from initiating the respective call in the future using the base station.