Abstract: The invention provides an expanding and/or collapsing apparatus and a method of use. The apparatus comprises a plurality of elements assembled together to form a ring structure oriented in a plane around a longitudinal axis. The ring structure is operable to be moved between an expanded condition and a collapsed condition by movement of the plurality of elements. The plurality of elements is operable to be moved between the expanded and collapsed conditions by sliding with respect to one another in the plane of the ring structure, in a direction tangential to a circle concentric with the ring structure. Applications of the invention include oilfield devices, including anti-extrusion rings, plugs, packers, locks, patching tools, connection systems, and variable diameter tools run in a wellbore.

Abstract: A method for configuring a wellbore system includes guiding a tractor into a tubular string including an inner surface supporting more or more components to a select one of the plurality of components, deploying an element from the tractor into the tubular string, engaging the selected one of the plurality of components with the tractor, and changing a configuration of the selected one of the plurality of components with the element deployed from the tractor.

Abstract: Earth models of stress conditions in subsurface reservoirs are formed reflecting rock mechanical properties, stress regime and also wellbore stability. A number of variables related to the rock mechanical properties and stress conditions are parameterized. The variability of minimum horizontal stress magnitudes as a product of the relative contributions of the various rock properties and input parameters or variables used to form the model is analyzed. Differences between predicted minimum horizontal stress magnitudes in the formation and an actual measurement obtained from the formation (for example, fracture closure pressure) are determined. The determined differences are the minimized through an optimization methodology to find a best set of parameters suitable to match the minimum horizontal stress to actual formation measurement.

Abstract: A system can determine properties associated with a plurality of wellbore zones extending radially outward from a wellbore of a drilling operation. The system can determine an operating window for a drilling pressure of the drilling operation based on the properties associated with the plurality of wellbore zones. The system can access real-time data for the plurality of wellbore zones during the drilling operation. The system can determine an adjusted operating window for the drilling pressure based on the real-time data. The system can output a command to adjust, in real time, at least one drilling parameter of the drilling operation based on the adjusted operating window.

Abstract: A system and method are disclosed for centralized monitoring and control of a hydraulic fracturing operation. The system includes an electric powered fracturing fleet and a centralized control unit coupled to the electric powered fracturing fleet. The electric powered fracturing fleet can include a combination of one or more of: electric powered pumps, turbine generators, blenders, sand silos, chemical storage units, conveyor belts, manifold trailers, hydration units, variable frequency drives, switchgear, transformers, and compressors. The centralized control unit can be configured to monitor and/or control one or more operating characteristics of the electric powered fracturing fleet.

Abstract: Systems and methods include a mechanical isolation device that comprises a sleeve, which includes a port for fluid flow between an internal bore of the sleeve and an inside of a tubular. A receiver positioned in the internal bore includes a first orifice at a first axial location on the receiver, and a second orifice at a second axial location on the receiver. The second orifice is either aligned or un-aligned with the port of the sleeve. The receiver is slidable within the sleeve to: (i) move the first orifice into alignment with the port and either move the second orifice out of alignment with the port or keep the second orifice out of alignment with the port; and (ii) move the first orifice out of alignment with the port so that a portion of the receiver covers the port to block fluid flow between the internal bore of the sleeve and the port.

Abstract: The present application provides a horizontal well multi-section multi-stage reciprocating fracturing method and apparatus. The method comprises the steps of: dividing a fracturing tubular column into n fracturing sections; fracturing the first fracturing section to form a first first-stage fracture; fracturing the second fracturing section to form a second first-stage fracture; fracturing the first fracturing section again to form a first second-stage fracture; going on in this way, fracturing the nth fracturing section to form an nth first-stage fracture; fracturing the (n?1)th fracturing section again to form an (n?1)th second-stage fracture; going on in this way, at last, fracturing the nth fracturing section again to form an (n)th-stage fracture. The present method and apparatus can effectively eliminate or reduce the interference of relatively long fractures that has been generated during the horizontal well multi-section fracturing to fractures generated by subsequent fracturing.

Abstract: A gun tube for a downhole perforating gun assembly includes a body having a cavity and one or more weights in the cavity. Gravity acts on the weights, which causes the tube body to rotate around its longitudinal axis so the weights are adjacent the lower part of the wellbore in which the gun assembly is positioned when oriented horizontally. This positions shape charges in the gun tube in a desired position prior to the shape charges being fired. The gun tube may also include one or more end connectors with electrical contacts having a first, extended position, and a second, contracted position, and/or end connectors that can be assembled by hand without the use of tools.

Abstract: Embodiments of the present disclosure provide combined multi-coupler assembly for quickly connecting a top drive to a tool. The combined multi-coupler assembly includes a drive stem and a tool dock that may be coupled to each other. When the drive stem and the tool dock are connected, axial loads, torsional loads, and hydraulic, pneumatic, electrical, optical, or other types of communications may be transferred between the drive stem and the tool dock.

Abstract: A system for hydraulically fracturing an underground formation in an oil or gas well, including a pump for pumping hydraulic fracturing fluid into the wellbore, the pump having a pump shaft, and an electric motor with a motor shaft mechanically attached to the pump to drive the pump. The system further includes a torsional coupling connecting the motor shaft to the pump shaft. The torsional coupling includes a motor component fixedly attached to the motor shaft and having motor coupling claws extending outwardly away from the motor shaft, and a pump component fixedly attached to the pump shaft of the pump and having pump coupling claws extending outwardly away from the pump shaft. The motor coupling claws engage with the pump coupling claws so that when the motor shaft and motor component rotate, such rotation causes the pump component and the pump shaft to rotate, thereby driving the pump.

Abstract: A packer for wells can include a body having a tubular shape, a sealing element having an upward end and a downward end and disposed around the body. The packer also includes a first prop upward of the sealing element, and a second prop downward of the sealing element. The first prop is configured to wedge under the upward end of the sealing element and the second prop is configured to wedge under the downward end of the sealing element to push the sealing element outward at both the upward end and the downward end.

Abstract: A tubular for downhole use, the tubular including a pipe, an insulation layer surrounding the pipe, and a protective layer around the insulation layer and comprising a polymer. The protective layer can also include a compression layer adjacent to the insulation layer. There may be reinforcement material in the protective layer, for example encapsulated by the elastomer. The tubular may have bare portions at the ends for manipulation of the tubulars to form a tubing string. A sleeve may be provided using the same layer structure to insulate the bare portions which form joints of the tubing string. The sleeve can also include a base layer.

Abstract: A method for building a dual-member drill string comprising an inner drill string and an outer drill string. Inner pipe sections are connected using non-threaded connections, while outer pipe sections are connected using threaded connections. A new inner pipe section is rotated in a first direction until the inner pipe section applies torque to the existing inner pipe string. If the magnitude of the torque applied to the inner pipe string exceeds a pre-determined threshold value, the inner pipe section is automatically rotated in an opposite second direction. The inner pipe section rotates between opposite directions, once torque is sensed in each direction, until the inner pipe section is coupled to the inner pipe string.

Abstract: A system and method to actuate a downhole tool, where the tool can include a body, a closure member and a degradable actuation ring. A profile of the actuation ring can be configured to engage an actuation tool (e.g. shifting tool, ball drop, dart, plug, etc.) used to displace the activation ring via the engagement and thereby displacing the closure member to a different position. The degradable actuation ring can be degraded by an agent downhole to degrade and/or remove the actuation ring from the downhole tool thereby providing an increased clearance through the tool.

Abstract: A system for downhole wellbore vector strain sensing including a strain sensor positionable between an outer surface of a wellbore casing and a subterranean formation for sensing a plurality of strain tensor elements, the plurality of strain tensor elements comprising multiple components of a strain tensor; a computing device positionable at a surface of a wellbore and communicatively coupled to the strain sensor; and a communication link between the strain sensor and the computing device for communicatively coupling the strain sensor to the computing device to relay strain data, the strain data comprising the plurality of strain tensor elements.

Abstract: A hydraulic fracturing system is disclosed as including a singular mobile platform of at least one mobile power unit (MPU) and at least one first switch gear that is configured to handle electric power from the MPU. The MPU is configured to generate voltage that matches the requirements of an electrical bus from the at least one switch gear such that a combined electrical current generated as a result of the generated voltage is provided to the electrical bus to the components of the hydraulic fracturing system. Further, the hydraulic fracturing system may include electrical fracturing equipment with at least one second switch gear to support the at least one first switch gear in handling electric power from the MPU. A datavan may be included in the system to control load shedding, load sharing, and power distribution for the electrical fracturing equipment comprising the at least one second switch gear.

Abstract: Provided is method for gravel packing dual zones within a wellbore and integrating a zonal isolation system. The method, in one embodiment, includes creating an outer sub-assembly and an inner sub-assembly, wherein the inner sub-assembly is positioned within the outer sub-assembly. The method further includes running the outer sub-assembly proximate a bottom of a downhole portion of a wellbore, and setting an uphole packer in an uphole portion of the wellbore and a downhole packer in the downhole portion of the wellbore. The method further includes gravel packing an upper zone and a lower zone, pulling the gravel pack service tool assembly out of the wellbore thereby isolating the upper zone and the lower zone from each other and the wellbore, and running an upper completion into the wellbore to open one or both of the upper zone or the lower zone for production.

Abstract: A downhole impact apparatus operable to impart an impact to an object within a wellbore. The impact apparatus may include a housing, a first chamber within the housing, a second chamber within the housing, and a piston assembly slidably disposed within the housing. The piston assembly may include a first piston slidably disposed within the first chamber and dividing the first chamber into a first volume and a second volume, a second piston slidably disposed within the second chamber, and a shaft connecting the first and second pistons. The first volume may be open to a space external to the housing and the second volume may be fluidly isolated from the space external to the housing. Relative movement between the piston assembly and the housing ends with the impact. The second chamber may be configured to contain a fluid to prevent relative movement between the piston assembly and the housing.

Abstract: An apparatus (10) for downhole data acquisition and/or monitoring is configured to be disposed within a completion (12) and comprises a hanger (36) configured to latch into a control line spool (38), a retrofit valve (40) for location within the subsurface safety valve (16) of the completion (12), and a sensing arrangement (42) including an optical fiber line (44). In use, the apparatus (10) is configured to be run into the completion (12) and is operable to provide data acquisition and/or monitoring capability in the well, including up or near total depth and in particular but not exclusively in the region of the well subjected to an intervention operation, such as a chemical injection operation.

Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including: generating a grid representation of a reservoir model comprising a simulation well, the grid comprising a plurality of grid-blocks, wherein the simulation well is centered in grid-block (i) of the plurality of grid-blocks; simulating, using the grid representation, grid-block pressures for the plurality of grid-blocks over a plurality of time steps; calculating an equivalent radius (ro*) for a grid-block (i+1), wherein the grid-block (i+1) is adjacent to the grid-block (i); and calculating, based on the equivalent radius and a grid-block (i+1) pressure, a shut-in bottom-hole pressure (SBHP) for the simulation well.