Abstract: A method for wellsite control includes, at a computing device, receiving sensor information from one or more sensors; determining at least one notification option based at least partially on the sensor information; selecting at least one notification option based at least partially on the sensor information; and sending a notification to a notification destination.

Abstract: An electric bonnet includes a housing; a guide piston disposed in the housing; an electric motor having a motor shaft; a rear housing connected to the housing; a gearbox assembly disposed in the rear housing, the gearbox assembly being coupled to the motor shaft of the electric motor; and a roller screw assembly disposed in the rear housing. A first end of the roller screw assembly is connected to the gearbox assembly, and a second end of the roller screw assembly is connected to the guide piston. Rotation of the motor shaft of the electric motor transmits rotary motion to the gearbox assembly, which transforms the rotary motion into linear motion using the roller screw assembly. The linear motion of the roller screw assembly actuates the guide piston.

Abstract: Methods may include quantifying the concentration of residual free amine and/or free carboxylic acid in a product mixture prepared from a reaction of a multireactive species and a fatty reagent; verifying that the concentration for the free amine and/or free acid in the product mixture is within an acceptable threshold for a given application; and combining the product mixture with one or more wellbore fluid components to generate the wellbore fluid. In another aspect, methods may include including reacting the multireactive species and a fatty reactant to generate a product mixture; quantifying the concentration of residual free amine and/or free carboxylic acid in the product mixture; verifying that the concentration for the free amine and/or free acid in the product mixture is within an acceptable threshold for a given application; and collecting the product mixture.

Abstract: A tool for removing material includes a body, an ultrahard insert, and a matrix. The body has a forward portion, an opposing rear portion, and a longitudinal axis therebetween. The ultrahard insert includes an ultrahard material, and the ultrahard insert is mounted to and contacts the body proximate the forward portion. The matrix contacts the body and the ultrahard insert. The matrix is mechanically interlocked with the body and at least a portion of the matrix is positioned circumferentially around at least a portion of the forward portion of the body.

Abstract: A screen assembly includes a frame having an outer perimeter and at least one inner support member, and at least one smooth surface affixed to the frame, where the smooth surface(s) have perforations. The frame may include a plurality of contact points extending upward from a top surface, and at least one smooth perforated screening surface is affixed to the plurality of contact points on the frame. In some cases, the smooth surface comprises a perforated region and an erosion resistant region. Also, the perforations may have a shape that includes one or more corners. The smooth surface may be a perforated metal foil, sheet metal, and the like. Perforations may be apertures having one or more opening area sizes across the span of the screen assembly.

Abstract: Methods and equipment are provided for stimulating recovery of hydrocarbons from a subterranean formation traversed by a wellbore, which employ at least one self-resonating nozzle. Fluid under pressure is supplied to the at least one self-resonating nozzle to create a channel in a surface of the subterranean formation facing the at least one self-resonating nozzle. In embodiments, the equipment can be a downhole tool or completion equipment (such as a liner) that is deployed in the wellbore.

Abstract: Electric submersible pump and other centrifugal pump stages having non-axisymmetric components and passage contours are disclosed. Such a component can be a shrouded impeller having a non-axisymmetric profile for its hub and/or shroud.

Abstract: A method can include accessing a depogrid generated via gridding of a structural model in a depositional space and transforming the gridded structural model to a geological space via an inverse mapping where the structural model represents structural features in a subterranean environment based at least in part on data acquired via at least one sensor; determining local u, v and w axes for a plurality of cells in the depogrid via volumetric centroids and vertices represented by coordinates in a depositional space coordinate system (u, v, w) and by coordinates in a physical coordinate system (x, y, z); defining directional geological grid properties based at least in part on the local u, v and w axes; and simulating physical phenomena of the subterranean environment via a simulator based at least in part on at least a portion of the directional geological grid properties.

Abstract: An isolation valve includes a ball valve element, an actuation section to rotate the ball valve element, and a trigger section that actuates the actuation section in response to a pressure differential. The actuation section includes an actuation mandrel, a piston housing that at least partially encases the actuation mandrel, a collet piston, and a holding collet. The piston housing and the actuation mandrel define a hydraulic chamber, and the collet piston separates the hydraulic chamber into an upper hydraulic chamber and a lower hydraulic chamber. The holding collet supports the collet piston during a stroke of the actuation mandrel that is triggered by the trigger section. The collet piston is configured to assume a rest position on the actuation mandrel before and during the stroke of the actuation mandrel, and the collet piston is configured to disengage from the actuation mandrel after the stroke of the actuation mandrel.

Abstract: A technique facilitates control over a downhole well operation. The technique utilizes an electronic control system for controlling actuation of a downhole application-specific attachment. According to an embodiment, the system comprises a universal actuator module which may be selectively combined with a variety of application-specific attachments, e.g. well tools. The universal actuator module is electrically powered via, for example, electricity supplied to drive an electric motor which, in turn, may be used to drive a hydraulic pump or other type of mechanical device. Additionally, a given application-specific attachment can be readily interchanged with other application-specific attachments (e.g. well tools) for performing a desired downhole operation or operations.

Abstract: Methods and apparatus for automatic recognition of environmental parameters with azimuthally distributed transducers. For example, a toolstring is disposed in a cased portion of a borehole penetrating a subsurface formation. The toolstring comprises a module comprising azimuthally distributed acoustic transducers each operable to emit and receive acoustic signals. The module is operated to emit an acoustic signal into fluid surrounding the module in the casing and record data indicative of receipt, by a plurality of the transducers, of acoustic waveforms resulting from interaction of the emitted acoustic signal with the casing, including at least a non-specular diffraction head wave excited by a guided wave that is excited by diffraction of the acoustic signal propagating in the casing metal. Acoustic velocity of the guided wave in the casing metal is determined utilizing the recorded data and geometric parameters of the module.

Abstract: A technique facilitates dehydration of gravel slurry around blank pipe sections of a completion having filters for receiving carrier fluid returns. A sand screen filter system may be assembled with a first filter, a second filter, and a blank pipe section extending between the first filter and the second filter. A fixed leak off tube is mounted to the sand screen filter system such that at least a portion of the fixed leak off tube overlaps the first filter. Additionally, a slidable leak off tube is slidably mounted to the sand screen filter system. The slidable leak off tube is oriented to enable the slidable leak off tube to be slid along the blank pipe section until secured in fluid communication with the fixed leak off tube.

Abstract: Systems and methods presented herein enable coordinated pumping operations. An example system may include a treatment fluid system configured to pump a treatment fluid into a wellbore, a pump-down system configured to pump a pump-down fluid into the wellbore to convey a perforating tool, a fluid valve system configured to selectively fluidly connect and disconnect the treatment fluid system and the pump-down system to and from the wellbore, and a controller communicatively connected to the treatment fluid system, the pump-down system, and the fluid valve system. The controller may be configured to monitor operational status of the treatment fluid system, the pump-down system, and the fluid valve system, and control operations of the treatment fluid system, the pump-down system, and the fluid valve system based at least in part on the operational status of the treatment fluid system, the pump-down system, and the fluid valve system.

Abstract: A method can include accessing a measurement model in memory of a downhole tool; determining an optimal parameter set using a processor of the downhole tool and the measurement model; and performing at least one measurement using at least one sensor of the downhole tool operated according to the optimal parameter set.

Abstract: An apparatus having one or more printed electrical interconnections is disclosed. The apparatus may include a chassis component of a drill string. The chassis component is configured to receive an electronic component. The apparatus also includes one or more printed electrical interconnections disposed proximate to the chassis. The one or more printed electrical interconnections are configured to communicatively connect with the electronic component.

Abstract: Asphaltene onset pressure of a formation fluid is determined by subjecting the fluid to a plurality of tests where depressurization is conducted at a different depressurization rate for each test while optically monitoring the fluid for asphaltene flocculation. The pressures at which asphaltene flocculation are detected in each test are fit to a curve as a function of depressurization rate, and the curve is extrapolated to a pressure (e.g., 0 psi) to provide the asphaltene onset pressure.

Abstract: A method can include accessing a model of a subterranean region where the model includes a fault that corresponds to a fault in the subterranean region; via a first side of the fault, outwardly radiating therefrom cells of the model with a first type of radiation and, via a second, opposing side of the fault, outwardly radiating therefrom cells of the model with a second type of radiation; and, based at least in part on the outwardly radiating of the first type of radiation and the outwardly radiating of the second type of radiation, assigning a portion of the cells of the model a sidedness property value with respect to the fault that indicates that each cell in the portion of the cells is assigned to the first side of the fault or assigned to the second side of the fault.

Abstract: Methods and systems are provided for clay detection, clay typing, and clay volume quantification using downhole electromagnetic measurements conducted by a downhole logging tool on a formation at a low frequency less than 5000 Hz. The downhole electromagnetic measurements are used to determine permittivity data that characterizes permittivity of the formation at the low frequency less than 5000 Hz. The downhole low frequency electromagnetic measurements are nondestructive, and the results indicate it is with high sensitivity to the existence of clays.

Abstract: Systems and methods for managing power at a wellsite. A system includes well construction equipment, power equipment, a power manager, power equipment sensors operable to output power equipment sensor data indicative of operational status of the power equipment, and a human-machine interface usable by a human user to enter power management settings. The power manager is operable to receive the power equipment sensor data and receive the power management settings, wherein each power management setting is associated with a corresponding mode of operation of the power manager. The power manager is further operable to, for each power management setting, change the mode of operation of the power manager to the mode of operation associated with that power management setting, and for each mode of operation, cause the power equipment to supply electrical power to the well construction equipment in a predetermined manner with respect to that mode of operation.

Abstract: A system and method using a subterranean biological reactor can include a pre-reactor storage unit configured to receive a feedstock including a slurry of biologically derived material and at least one pump configured to pump the effluent from the pre-reactor storage unit. The system may include at least one wellbore containing a subterranean biological reactor configured to receive the effluent from the pre-reactor storage unit. At least a portion of the subterranean biological reactor may be configured to perform anaerobic digestion upon the effluent to generate a biogas.