Abstract: Systems and methods for damping torsional oscillations of downhole systems are described. The systems include a downhole string comprising a disintegration device and a damping system at least one of in and on the downhole string, the damping system configured to damp torsional oscillations of the downhole string. The methods include installing a damping system at least one of on and in the downhole system with the downhole system including a downhole string having a disintegration device and the damping system is configured to damp torsional oscillation of the downhole string.

Abstract: An apparatus for cutting and/or milling of tubulars in a wellbore, especially using coiled tubing. An elongated main body has a longitudinal bore, with a piston slidably positioned in the bore. The piston is connected to one or more operating arms which are rotatably connected to the main body. The connection between the piston and the operating arms may be a pinned connection or a geared connection, both of which provide for a positive connection between the piston and the operating arms. Cutter bases are connected to the cutter arms, with a number of cutters mounted to the cutter bases. Fluid flow down the coiled tubing and through the main body bore pushes the piston downwardly, opening the operating arms and cutter bases and permitting the apparatus to be pulled up into the lower end of a tubular string for cutting and/or milling.

Abstract: Provided is a hydrocarbon well tubing casing annulus (TCA) control valve system that includes a TCA flowline to direct TCA fluid expelled from a TCA of a hydrocarbon well system to a collection facility, a TCA control valve to regulate the flow of the TCA fluid in the TCA flowline, a TCA sample port to enable sampling of the TCA fluid expelled, a TCA check valve to facilitate forward flow of the TCA fluid, a TCA pressure sensor to sense pressure of the TCA, and a TCA control system to: receive (from the TCA pressure sensor) a sensed pressure of the TCA, determine (based on the sensed pressure of the TCA) that a pressure of the TCA is below a threshold TCA pressure, and, in response, control the TCA control valve to operate in a closed position.

Abstract: A fluid sampling probe may include one or more features that increase the likelihood that a seal will be maintained during a sampling operation, even for sampling operations in unconsolidated formations. This may reduce contamination in formation fluid samples that are obtained during sampling operations. The fluid sampling probe may include a reinforcement ring configured to extend into a geological formation beyond an elastomer portion of the fluid sampling probe, which may support the geological formation and prevent a failure of the formation during sampling operations. The fluid sampling probe may also include a stop sleeve to prevent overextension that could otherwise cause the geological formation to collapse. In addition, the fluid sampling probe may include a relatively wider sealing elastomer that may decrease in height monotonically radially from the center of the fluid sampling probe.

Abstract: A method of freeing a stuck pipe includes positioning a pipe freeing tool within the wellbore at a location proximate the stuck pipe, the pipe freeing tool including a downhole conveyance; and an arm coupled to the downhole conveyance, and activating the arm of the pipe freeing tool to apply a force to an external surface of the stuck pipe, wherein the force moves the stuck pipe away from a surface of the wellbore and towards a center of the wellbore. Another method of freeing a stuck pipe from a wellbore includes positioning a pipe freeing tool within the wellbore at a location proximate the stuck pipe, the pipe freeing tool including a jack device and a set of wheels coupled to the jack device, and activating the jack device of the pipe freeing tool to apply a force to an external surface of the stuck pipe.

Abstract: A method includes utilizing a charging and communication interface and a sensor system to gather downhole measurements. The method further includes charging and activating the sensor system using the charging and communication interface, installing the sensor system into a nozzle of a drill bit, running the drill bit into a wellbore, conducting measurements using the sensor system, pulling the drill bit out of the wellbore, and contacting the charging and communication interface with the sensor system to retrieve the measurements from the sensor system.

Abstract: Downhole drilling tools and methods for drilling and detecting carbon dioxide leakage in a subsurface reservoir are disclosed. The tools include a cylindrical body; a sensor module including a plurality of sensors including a first conductive electrode, a second conductive electrode, and a plurality of TiO2 nanotubes, and an electric line located between and connecting the first and the second conductive electrodes; and a communication device communicatively connected to the sensor module; wherein the sensor module and the communication device are attached to an outer surface of the cylindrical body.

Abstract: A release mechanism for a jarring tool is formed by a plurality of segmented release lugs. Each lug includes a plurality of axial spaced projections on an inner surface and a plurality of grooves on an outer surface. The projections may have either different widths or may be separated by varying distances and releasably engage corresponding grooves in a mandrel located within a housing of the tool. The release lugs are positioned between a trigger sleeve and the mandrel. In one embodiment, the release lugs are positioned within a support collar. In a second embodiment, the lugs are provided with stabilizing posts and cavities that serve to maintain the lugs in a proper alignment.

Abstract: The present disclosure relates to a fluid level sensing system for sensing a fluid level in a well. The system has an upper housing in communication with a lower housing, with the lower housing having a first bore in communication with a fluid in the well, and a second bore isolated from the first bore and in communication with at least one of a vacuum gauge or an external vacuum source. The upper and lower housings house a first flexible bag and a second flexible bag, with the first bag housed within the second bag. A portion of the first bag communicates with the first bore and is responsive to a change in pressure within the first bore caused by a changing fluid level in the well. A portion of the second bag communicates with the second bore and exerts a reference pressure on the first bag. A sensing subsystem senses expanding and contracting movement of the bags and generates a signal indicative of a change in a level of the fluid in the well.

Abstract: The invention relates to connectors for casings used in high temperature wells. The connectors of the present invention may be used for connecting casing segments of geothermal or oil wells. The connector is simple in design and able to take up thermal expansion due to temperature change when high temperature media starts to flow through the casings and when the well needs to be cooled down for maintenance. The connector of the present invention uses a new sealing mechanism for preventing leaking during operation.

Abstract: A centralizer includes a centralizer body having a through-bore for receiving a tool. The centralizer includes a centralizer fin radially extending from the centralizer body and longitudinally extending along the centralizer body. The centralizer fin includes a diverter portion. The diverter portion has a front surface at one longitudinal end of the centralizer fin. The centralizer fin includes an engagement portion coupled to the diverter portion distal to the centralizer body. The centralizer fin includes a cladding applied to the front surface of the diverter portion.

Abstract: This system maintains bottom hole pressure and constant well bore pressure profile for a period of time in event of loss of power to rig pumps, rig pump failure or other loss of pressure to the primary flowline. The back pressure system diverts mud into the primary flowline to maintain pressure. The system provides time to get the diesel powered cement unit on line to maintain pressure or get the power reinstated to the rig pumps. The mud discharged into the primary flowline can be recovered back into the housing via the housing inlet line and the housing can be recharged via the N2 high pressure bottle rack. The back pressure system installs upstream of the MPD chokes with interfaces to the primary flow line to divert the drilling mud to the primary flowline.

Abstract: A drilling assembly and method of drilling a wellbore is disclosed. The drilling assembly includes a steering device having a tilt device and an actuation device. A first section and a second section of the drilling assembly are coupled through the tilt device, wherein the first section is attached to a drill bit. The actuation device includes an electromechanical actuator and causes a tilt of the tilt device to cause the first section attached to the drill bit and the drill bit to tilt relative to the second section. The wellbore is drilled using the drill bit. The electromechanical actuator is actuated to tilt the tilt device to cause the first section attached to the drill bit and the drill bit to tilt relative to the second section and to maintain the tilt geostationary while the drilling assembly is rotating to form a deviated section of the wellbore.

Abstract: Disclosed is a rotary steering drilling apparatus.

Abstract: A system for initiating a charge downhole in a wellbore includes a first donor charge detonable to produce a first detonation wave, a second donor charge detonable to produce a second detonation wave, and an acceptor charge detonable by either the first detonation wave or the second detonation wave. The system also includes a donor charge barrier separating the first donor charge from the second donor charge. The donor charge barrier includes heat dissipative and conduction characteristics for preventing deflagration from spreading between the first donor charge and the second donor charge. The system also includes an acceptor charge barrier separating the acceptor charge from the first donor charge and the second donor charge. The acceptor charge barrier includes Shockwave impedance characteristics for conveying the first detonation wave or the second detonation wave to the acceptor charge to detonate the acceptor charge.

Abstract: A fluid operated drilling device for drilling a hole includes a hammer connected to a drill rod, and a rotation device to rotate the drill rod and the hammer. The hammer includes a tubular main body, a back head, a cylindrical piston housing, a reciprocating piston and a space between the piston. The piston housing is divided by an annular pressurizing portion into first and second space portions for elevating and striking the piston. First communication channels from a hollow portion of the piston into a second space between the piston and the main body discharge fluid between the piston and the main body. A method for drilling a hole using the fluid operated drilling device is also disclosed.

Abstract: Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations to enhance hydrocarbon production from the subsurface formations may include providing a manifold coupling having a manifold coupling passage with a manifold coupling axis. The manifold coupling may include a first inlet passage positioned to provide fluid flow between a first fracturing fluid output and the manifold coupling passage, and a second inlet passage positioned opposite the first inlet passage to provide fluid flow between a second fracturing fluid output and the manifold coupling passage. The first inlet passage may have a first inlet passage cross-section at least partially defining a first inlet axis extending transverse relative to the manifold coupling axis. The second inlet passage may have a second inlet passage cross-section at least partially defining a second inlet axis extending transverse relative to the manifold coupling axis and not being co-linear with the first inlet axis.

Abstract: A method including circulating wellbore servicing fluid (WSF) downhole, passing the circulating WSF through a separator configured to separate solids therefrom, separating the plurality of particles into screened particles having a diameter greater than or equal to a mesh size and retained particles having a diameter less than the mesh size in a particulate-reduced WSF, adding a volume of second loss circulation material (LCM) composition including replenishment particles to particulate-reduced WSF to provide LCM-adjusted WSF, and introducing LCM-adjusted WSF downhole and circulating LCM-adjusted WSF. The WSF includes first LCM composition including plurality of particles having first cumulative particle size distribution (PSD). The LCM-adjusted WSF includes LCM-adjusted WSF LCMs. LCM-adjusted WSF LCMs include the retained and replenishment particles.

Abstract: A method and apparatus provide for separating a fluid conveyance, such as coiled tubing, wherein the apparatus includes an anchor section and a carrier that, when united, create an explosive force, separating the fluid conveyance.

Abstract: A drilling tool with power generation includes an outer housing and a driveshaft located at least partially within the outer housing and configured to rotate with respect to the outer housing via bearings located between the driveshaft and the outer housing. The drilling tool also includes an electromagnetic power generation device. The electromagnetic power generation device includes a coil and a magnet located within the housing. One of the coil and the magnet is coupled to the housing and the other is coupled to the driveshaft. Relative movement of the driveshaft with respect to the coil generates electrical power.