Abstract: A tubing assembly is mounted in series between two piping sections for conveying fluid between the piping sections while isolating vibrations between the two piping sections. The tubing assembly includes an inner tubing member formed of resilient material which is mechanically joined to mounting collars at opposing ends thereof for connection to the adjacent piping sections. Rigid connecting portions are supported on each of the mounting collars at the opposing ends of the assembly which define load bearing surfaces which cooperate with load bearing surfaces of the other connecting portions with vibration damping material undergoing compression between different load bearing surfaces depending upon the direction load is applied across the tubing assembly.

Abstract: The disclosed embodiments include systems and methods to improve downhole drilling. A representative system may include a rotary steering tool having a plurality of hydraulically actuated steering pad assemblies, a fluid outlet, and a variable-orifice valve positioned within a primary flow channel of the rotary steering tool, downhole from the steering pad assemblies, and uphole from a drill bit. The valve comprises a valve port having a variable-area orifice that can be controllably varied to dynamically adjust the magnitude of a pressure drop from a tool bore to a wellbore annulus formed by the inner boundary of the wellbore and an outer boundary of the tool.

Abstract: A mobile service rig includes an onboard rechargeable electric power storage system (e.g., a battery, supercapacitor, etc.) for powering the rig's hoist and drive wheels. Under battery power, the rig travels overland to service wellbores at various wellsites. Once at a wellsite, a submerged pump assembly at the site is de-energized, and the hoist proceeds to remove and reinstall tubing and the pump assembly. While the electric pump assembly is de-energized, the rig's onboard rechargeable electric power storage system taps into the electric power source normally used for the electric pump assembly. The electric power source of the electric pump assembly recharges the rechargeable electric power storage system while the rig is servicing the well. When the hoist lowers the tubing back down into the wellbore, the energy generated by that operation is recovered and used for replenishing the rig's rechargeable electric power storage system.

Abstract: A rotating control device (RCD) system includes a first RCD comprising a first body and a first sealing element within the first body and a second RCD comprising a second body a second sealing element within the second body. The RCD system also includes a controller that is configured to control a first actuator assembly to adjust the first RCD to a withdrawn configuration in which the first sealing element is not positioned to seal about a tubular and to control a second actuator assembly to maintain the second RCD in a sealing configuration in which the second sealing element is positioned to seal about the tubular while the first RCD is in the withdrawn configuration.

Abstract: A compression assembly for maintaining integrity of the seals in a stuffing box. The compression assembly includes a housing which is adapted to connect to the body of a stuffing box. There is an internal annular piston chamber formed in the housing and an annular piston reciprocally disposed in the piston chamber. There is a chamber formed by piston cylinder walls and the top of the piston whereby grease or other fluid under pressure can be introduced so as to exert pressure on the piston and hence movement thereof toward the stuffing box seals. The assembly also comprises a position sensor to monitor travel of the piston.

Abstract: A collar control system and methods for mobile drilling machines are disclosed. One method may include: automatically initiating rotation of a drill bit based on collar settings; automatically feeding the drill bit at a feed rate to form an initial hole at a predetermined reaming increment; and automatically retracting the drill bit from the initial hole when the predetermined reaming increment is achieved, but prior to reaching a collar depth. Another method may include: measuring values of multiple drill bit inputs at a predetermined sample depth region during the collar operation; storing average values for each of the drill bit inputs over the predetermined sample depth region; monitoring values of the drill bit inputs when the drill bit moves beyond the predetermined sample depth region; and ending the collar operation prior to a desired collar depth when any of the monitored values change by a predetermined threshold.

Abstract: A wellhead system includes a housing defining an axial bore, an outer pipe secured to the housing and extending axially from the housing, an inner pipe passing through the axial bore and through the outer pipe and having an outer diameter that is smaller than an inner diameter of the outer pipe, and a sealing device positioned along an inner surface of the housing and sealed to the inner pipe to seal an annular region defined between the inner and outer pipes.

Abstract: A fracturing system is provided. In one embodiment, the fracturing system includes a fracturing manifold for routing fracturing fluid to multiple wells. The fracturing manifold can be coupled via fluid conduits to fracturing trees installed at the wells. In some cases, each fracturing tree that is coupled to the fracturing manifold is coupled by at least one rigid fluid conduit. The fracturing manifold can include a trunk line that provides fracturing fluid to multiple outlet branches, which can include valves for controlling flow of fracturing fluid to wells downstream of the valves. Additional systems, devices, and methods are also disclosed.

Abstract: An apparatus and method for controlling the flow of a fluid from a subterranean well zone to a pipe located within a bore in the well zone. The apparatus comprises an elongate tubular body having an interior passage and a valve passage extending between an exterior of the tubular body and the interior passage with a sliding sleeve adapted to selectably cover and uncover the valve passage. A chamber is formed on one end of the sliding sleeve with an elongate narrow passage extending thereto from the exterior of the tubular body, wherein a pressure drop of the fluid through the elongate narrow passage is adapted to move the sliding sleeve between a closed and an open position. A flow restrictor between the chamber and the interior passage of the tubular body has a pressure drop dependent only upon a flow rate of the fluid therethrough.

Abstract: A guide device for a tool string to guide the tool string down a wellbore, the guide device comprising: a coupling to connect the guide device to an end of a tool string, a mandrel and a tip at a leading end of the mandrel, a centralising device supported by the mandrel, and a joint (a flexible joint or articulation joint) between the mandrel and the coupling allowing angular displacement of the mandrel relative to the tool string so that the tip can displace from a longitudinal axis of the tool string.

Abstract: An example system includes a moveable platform having an uphole end and a downhole end. The platform includes a drive arrangement for moving the platform in one or more directions along an interior wall of a casing string in a wellbore. The platform includes scraping arrangement for removing debris from the interior wall of the casing string. The platform includes a debris catching arrangement downhole of the scraping arrangement for collecting some or all of the debris removed. The platform may include a coating arrangement to deliver and apply a substance to at least a part of the wall of the casing string. The coating arrangement may include a reservoir holding one or more liquid substances and a valve to regulate flow of the one or more liquid substances. The liquid substance may include epoxy resin.

Abstract: A directional drilling system includes a rotary steerable tool. The rotary steerable tool includes an extendable member configured to extend outwardly from the rotary steerable tool upon actuation, and a geolocation electronics device configured to track a position of the rotary steerable tool and the extendable member and control actuation of the extendable member. The geolocation electronics device and extendable member are configured to rotate with the rotary steerable tool.

Abstract: Disclosed is a liner top test tool with a scraper cartridge and seal back-up rings for testing casing integrity in a wellbore. The seal back-up rings are comprised of first and second ring elements that are biased apart by compression springs. The first ring element has a boss that inserts into a bore of the second ring element, blocking debris from flowing into the interior of the seal back-up ring.

Abstract: A method of lining a tube using a spoolable liner includes connecting a connector to a distal end of the spoolable liner. The connector and spoolable liner are inserted into the tube and are advanced to a tube engagement point. A distal connection is formed between the spoolable liner and the tube by attaching the connector to an engagement mechanism at the tube engagement point. A proximal end of the spoolable liner is established and a proximal connection is formed between the proximal end and the tube. The spoolable liner is plugged with a deployable plug in a vicinity of the distal end and with a termination in a vicinity of the proximal end. An interior area is filled with a fluid such that the fluid expands the spoolable liner against an interior wall of the tube.

Abstract: In some examples, an electric submersible pump includes a pump, an electric motor to drive the pump, and a controller. The controller can monitor at one or more terminals of the electric motor a value relating to total harmonic distortion. The controller can also determine whether to de-rate the electric motor in response to the monitoring at the one or more terminals of the electric motor of the value relating to the total harmonic distortion.

Abstract: An apparatus for monitoring deployment of filtration media at least partially surrounding a tubular disposed in a borehole penetrating the earth includes a carrier configured to be conveyed through the tubular, a low-frequency acoustic wave source disposed on the carrier and configured to transmit acoustic waves in a frequency that is less than 3000 Hz into the tubular, and an acoustic wave receiver disposed on the carrier a distance from the low-frequency acoustic wave source and configured to receive acoustic waves transmitted by the low-frequency acoustic wave source. The apparatus also includes a controller configured to compare data characterizing the received acoustic waves to reference data characterizing acoustic waves with the filtration media not deployed.

Abstract: A drill bit in conjunction with a hammer-drill to penetrate composite metal and non-metal structure or structures including, for example, thick metal or rebar encountered during concrete, rock or masonry boring operations without requiring a change in drill equipment.

Abstract: A method and apparatus for containing one or more shaped charges in a single plane, arrayed about the center axis of a gun body, and detonated from a single initiator in a shaped charge cluster assembly.

Abstract: Generally, a sonde, associated components and methods are described which can be used in conjunction with an inground tool having an inground tool housing that defines an inground tool cavity such that the inground tool cavity is exposed to an ambient pressure environment which surrounds the inground tool during an inground operation. A sonde housing assembly includes an exterior configuration that is receivable within the inground tool cavity. The sonde housing assembly at least partially defines a sonde interior and is further configured for receiving the pressure sensor body of a pressure sensor in a pressure sealed engagement. A sonde electronics package is supported within the sonde interior and is at least configured to receive the pressure signal and transfer a corresponding pressure signal from the sonde.

Abstract: A mast assembly for a drilling rig includes a mast formed from a plurality of mast subunits. The mast assembly includes a lower drilling machine, upper drilling machine, and upper mud assembly, each of which is coupled to and movable vertically relative to the mast. The mast subunits are separable when the mast is in a transport configuration such that the LDM is positioned in a first subunit and the UDM is in a second subunit of the mast when the mast is in the transport configuration. The mast assembly may be used during a continuous drilling operation.