Abstract: An improved top pot assembly utilizes an attachment body for attaching the rubber to a bearing assembly for rotation with the inner barrel. The attachment body simplifies the replacement of the rubber on the drilling assembly. The attachment body provides a guide that slopes downward into the central aperture and the bore to guide the mandrel and drilling string towards the bore. The attachment body also provides a stripper receiver for attachment of the rubber to the attachment body. The attachment body attaches to the housing which attaches to the bearing assembly for rotation of the rubber and the inner barrel.

Abstract: A system for use in a wellbore that includes a casing with a casing interior extending from a surface to a predetermined depth in the wellbore, a tubing with a tubing interior disposed inside the casing, and an entry guide with an entry guide upper end coupled to a tubing lower end of the tubing. The entry guide has an expandable portion that is configured to expand, in response to a pressure change, from a compressed state to an expanded state. The entry guide has an opening at an entry guide lower end that is exposed to the casing interior, and a second diameter of the opening in the expanded state is larger than a first diameter of the opening in the compressed state.

Abstract: A downhole valve assembly includes a safety valve and an actuator that opens and/or closes the valve. The actuator can be an electro-hydraulic actuator (EHA), an electro mechanical actuator (EMA), or an electro hydraulic pump (EHP). The downhole safety valve can also include an electric magnet. The electric magnet can act as or control a magnetic decoupling mechanism to control closure of the safety valve.

Abstract: A support shoe for a sealing element of a packer assembly has a support shoe arm extending longitudinally over an outer surface of the sealing element. A support shoe leg extends beneath the sealing element and the top of a ramped surface of a setting sleeve. A connecting portion connects the support shoe arm and the support shoe leg, and the support shoe envelops an upper end of the sealing element.

Abstract: A dual line drawworks system and methods of using the same. A drilling rig may include two drawworks, each attached to a drilling line that extends through a series of sheaves located on the crown block and a traveling block. One end of the drilling line may be attached to an anchor. The traveling blocks may comprise a series of split blocks which may be separately movable from one another and may be removably attached to an underside of the crown block. The two drawworks may be coupled to one another and to one or more control systems, which may include one or more variable frequency drives, and the two drawworks may be configured to operate at the same speed. Systems may be used to monitor the distance between the traveling blocks and detect and correct for any excess distances therebetween.

Abstract: A technique facilitates formation of secure connections for use in downhole environments. According to an embodiment, a connector may be constructed as a dry mate connector which provides both a sealed connection and a connection able to withstand a predetermined tensile loading. The connector comprises connector ends combined with an outer connector housing. Additionally, the connector comprises a shape memory alloy sealing system which may be activated to form a secure seal with a corresponding cable or other component feature. The connector also comprises a shape memory alloy retainer system which may be activated to securely grip the corresponding cable or other component feature so as to withstand substantial tensile loading acting on the corresponding cable or other component feature.

Abstract: A line clamp configuration including a housing, a body attached to the housing, the body having a line contact surface, and a releaser disposed to separate the body from the housing. A control line clamp configuration including a downhole tool housing, an operable component of the downhole tool movable relative to the tool housing, a depending member on the operable component, a clamp body fastened to the housing by the depending member, a control line being releasable by removing the depending member from the clamp body. A control line clamp configuration including a split ring, a clamp body closing the split ring, and a switch to release the clamp body upon receipt of a signal. A borehole system including a borehole in a subsurface formation, a tool in the borehole, a clamp configuration operably connected to the tool.

Abstract: A perforating gun system for tubing conveyed perforation is provided. The perforating gun system includes a gun carrier, at least one free rotation device, a charge tube suspended on the at least one free rotation device, a stationary emitter coupled to the charge tube, and a sensor coupled to an interior surface of the gun carrier. The sensor can be configured to intermittently align with the stationary emitter when the charge tube is orienting independently of the rotation of the gun carrier.

Abstract: A method of identifying a location of gas breakthrough within a completed production well includes: obtaining production composition data and/or tracer data from the production well; analysing the production composition data and/or tracer data to determine whether gas breakthrough has occurred within the production well; and in response to determining that gas breakthrough has occurred within the production well, examining mud-gas data collected during drilling of the production well to identify a gas breakthrough location within the well where the gas breakthrough has occurred.

Abstract: Expansion cones and methods of using expansion cones with expandable liner hangers. An example expansion cone includes a detachable support coupled to a mandrel. The detachable support is configured to contact an interior surface of the expandable liner hanger during expansion of the liner hanger. The detachable support is further configured to detach after the liner hanger is expanded thereby producing a detached support. The detached support remains in contact with the interior surface of the expandable liner hanger after expansion of the expandable liner hanger and removal of the mandrel.

Abstract: A method of evaluating an operation of a downhole motor implemented in a wellbore includes receiving a first set of downhole data associated with the operation of the downhole motor at a first flowrate and generating a flowrate-independent power curve for the downhole motor based on the first set of downhole data. The method further includes, based on the flowrate-independent power curve, determining a second set of downhole data associated with the operation of the motor at a second flowrate.

Abstract: A downhole tool includes a housing having an inner surface. And inner groove is formed in the inner surface. The downhole tool also includes a body positioned in the housing. The downhole tool also includes a plurality of retention members positioned at least partially within the inner groove. The retention members initially prevent the body from moving in a downhole direction relative to the housing. The retention members are configured to yield, which allows the body to move in the downhole direction relative to the housing.

Abstract: The present application provides an underground reservoir monitoring system for real-time monitoring changes of reservoir parameters. The system measures the alternating current signal when an alternating current passes through the transceiver along the casing, and calculates the alternating current flow parameters including phase velocity, group velocity, time difference, amplitude attenuation, and phase difference of the alternating current along the casing based on the alternating current signal. Each alternating current flowing parameter has a one-to-one relationship with the reservoir parameter. Using these relationships, reservoir parameters are calculated and used to monitor changes of the reservoir parameters.

Abstract: A method includes drilling a first bore into a formation to a first depth, the bore having a bore wall and a first diameter that is sufficient to receive a casing pipe. A casing pipe is driven into the drill bore, the casing pipe having a binder on an exterior surface of the casing pipe that is configured to secure the casing pipe to the bore wall, the casing pipe being secured to an anchoring nut at a proximal end. The anchoring nut includes a gripping feature. An anchoring clamp of a drill rig is engaged with the gripping feature of the anchoring nut to thereby anchor the drill rig to the formation. The anchoring clamp includes a plurality of jaws that are movable toward and away from a central axis.

Abstract: Systems, methods, and apparatus for establishing a downhole connection between a first well tool and a second well tool. The first well tool may include a mandrel, a first connector assembly, and an elongated protection sleeve. The protection sleeve may form a hydraulic chamber over the mandrel when positioned in a closed position, and the hydraulic chamber may include a dielectric cleaning material. The elongated protection sleeve may be configured to mechanically move to an open position when engaging with a second well tool downhole to release the dielectric cleaning material and connect with the second well tool via the first connector assembly. The dielectric cleaning material may be injected into a cavity between the first connector assembly of the first well tool and a second connector assembly of the second well tool to clean and displace downhole fluids and debris located in the cavity and establish the connection.

Abstract: Systems and methods presented herein are configured to facilitate effective fracture initiation. For example, a method includes deploying a tool string into a wellbore extending through a subterranean formation, wherein the tool string comprises a perforating tool and a mechanical reactant delivery assembly; releasing a plurality of chemical reactants from the mechanical reactant delivery assembly while the tool string is deployed within the wellbore to enable the plurality of chemical reactants to mix to form a breakdown fluid; and firing one or more explosive charges of the perforating tool to inject the breakdown fluid into the subterranean formation to initiate one or more fractures in the subterranean formation.

Abstract: Metal-based ceramic composite coatings and related devices, assemblies, and methods include monocrystalline superhard particles dispersed in a metal matrix disposed on at least one wear surface of a component of an oil and gas well assembly, system, or device.

Abstract: A packer assembly for use within a wellbore. The packer assembly may include a mandrel, a seal assembly disposed about the mandrel, and a deployment system disposed about the mandrel. The seal assembly may include a cup holder and a cup shaped sealing element coupled to the cup holder at a first end and deployable to create a seal between the mandrel and a wellbore wall. The deployment system may include a plurality of arc arms rotatingly coupled to the cup holder and a stack assembly that includes a plurality of packer elements that, when compressed, rotate the plurality of arc arms to deploy the cup shaped sealing element.

Abstract: Some implementations include an apparatus configured for use in a wellbore drilled through one or more subsurface formations. The apparatus may comprise one or more pressure intensifier modules configured to increase an applied force of a downhole power unit (DPU) in setting a downhole tool in the wellbore, each pressure intensifier module including a movable input device configured to provide an input force from the DPU and a pressure intensifier piston having a first portion of a first contact area and a second portion of a second, smaller contact area, wherein the pressure intensifier piston is coupled to the movable input device by a force-dependent coupling device. The apparatus may also include a setting piston configured to provide a setting force to one or more components of the downhole tool, wherein the setting force is generated, at least in part, by the pressure intensifier piston.

Abstract: In general, in one aspect, embodiments relate to a perforating gun that includes a gun body, a charge tube disposed within the gun body, a plurality of charge cases disposed within the charge tube, and a sacrificial fill material disposed within at least a substantial portion of an inner cavity of the charge tube.