Abstract: A downhole apparatus has a sleeve body sleeve body defining a sleeve body inner surface. The sleeve body has an internal thread on at least a portion thereof. The internal thread defining having a thread minor diameter. A plug seat is pressed into the threaded portion of the sleeve body. The plug seat has an unthreaded outer surface defining a plug seat outer diameter. The plug seat outer diameter is greater than the thread minor diameter.

Abstract: A centralizer for use in a wellbore includes a body for disposing around a periphery of a downhole tubular. The body has a plurality of bow springs biased toward an expanded position and a pair of end rings connecting the bow springs. The centralizer further includes an indentation or row of indentation segments formed in a surface of and along each bow spring. The indentations or indentation segments are operable to reduce a stiffness of the centralizer as the bow springs move from the expanded position to a restricted position.

Abstract: Measurement of the inclination and azimuthal direction of a borehole extending beneath an obstacle, such as a body of water, which utilizes magnetic and gravity sensors at the drill bit of a borehole being drilled. Embodiments of the present invention determine and remove remanent field components and the effects of ferromagnetic permeability prior to and during drilling of the borehole.

Abstract: A plunger lift system, as well as a method for monitoring plunger parameters within a wellbore using such a plunger lift system, are provided. The plunger lift system includes a lubricator attached to a wellhead at the surface and a plunger dimensioned to travel through the production tubing upon being released from the lubricator. The plunger lift system also includes magnetic sensor systems installed along the production tubing, where each magnetic sensor system includes a magnetic sensor for detecting the passage of the plunger as it travels through the production tubing, as well a communication device for transmitting communication signals between the magnetic sensor systems and a computing system located at the surface, where the computing system includes a processor and a non-transitory, computer-readable storage medium including computer-executable instructions that direct the processor to dynamically determine the plunger position and/or velocity based on the received communication signals.

Abstract: A drilling tool includes an outer cylinder; a power rotary shaft arranged in an inner chamber of the outer cylinder; a percussion generator arranged below the power rotary shaft, having a transmission shaft extending in the outer cylinder and can be driven by the power rotary shaft to rotate around its axis, an output main shaft engaged with a lower end of the transmission shaft so as to be driven by the transmission shaft to rotate about its axis and is movable relative to the transmission shaft along an axial direction, and an percussion assembly The percussion assembly is arranged between an annulus formed between the upper end of the output main shaft and the outer cylinder and can generate reciprocating impact along the axial direction on the output main shaft. A drilling bit connected with the output main shaft extending out of the inner chamber of the outer cylinder.

Abstract: Downhole tractor control systems and methods to maintain a load among multiple tractors are disclosed. A method to adjust a load among multiple tractors includes receiving first power feedback of a first downhole tractor, receiving second power feedback of a second downhole tractor, identifying an unbalance load condition when a difference between the first power feedback and the second power feedback exceeds a predetermined threshold, and adjusting, in response to identifying the unbalance load condition and based on the difference, power reference of the first downhole tractor and the second downhole tractor.

Abstract: Provided is a communications sub. The communications sub, in one aspect, includes a fluid chamber, and a pressure-activated indexing device positioned within the fluid chamber, the pressure-activated indexing device including a lock mandrel configured to incrementally move between an engaged state and a disengaged state when subjected to two or more pressure cycles. The communications sub, in accordance with one aspect, further includes a latch body positioned in the fluid chamber, the latch body configured to be fixed in place by the lock mandrel and close a fluid path from the fluid chamber to a control line when the lock mandrel is in the engaged state, and configured to be allowed to move and open the fluid path from the fluid chamber to the control line when the lock mandrel is in the disengaged state.

Abstract: A downhole tool comprising, a coring module for obtaining at least one rotary core sample from a formation, a core storage module for storing the at least one rotary core sample and connected to the coring module, and a motor module for moving the at least one rotary core sample from the coring module to the core storage module and wherein the motor module is connected to the coring module. Additionally, the downhole tool may comprise a first, second, and third sensing modules configured to take measurements of the core sample.

Abstract: A method of oil recovery by applying an electrical signal to a reservoir of interest, wherein said method comprises the following steps: obtaining the characteristic frequency of the water-oil interface of the reservoir; and applying the electrical signal to the reservoir, wherein said electrical signal is an alternating current signal or a combination of a direct current signal and an alternating current signal, and wherein the frequency of the alternating current signal is the characteristic frequency of the water-oil interface, thereby producing alteration of the water-oil interface and movement of the oil for extraction.

Abstract: A wellbore select fire switch retaining member system and method with an integrated through wire and ground wire in a switch sub. The system/method includes a retaining member that has a form factor acceptable by a conventional switch sub. The retaining member incorporates an electrical connection to the center pin of a pressure switch. The system further includes a secondary piston aligned with a piston in the switch (switch piston) so that external pressure is fully acted upon the entire switch piston creating a reliable switch connection. Another system includes an integrated retaining member and switch module having a form factor compatible with existing switch subs. The integrated module inputs include a ground wire and a through wire and the outputs include a ground wire, through wire and an arming wire.

Abstract: A downhole connection includes a rotating member and an independently rotating member. A solenoid is connected to the independently rotating member and a moving member is connected to the rotating member. The moving member is movable by the solenoid and connected to an actuation valve of a downhole tool on the rotating member.

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.

Abstract: A tubular running tool equipped with a mandrel having an elongated body with a longitudinal axis and configured for suspension above a wellbore. A plurality of slips are disposed on the mandrel. Each slip is configured to receive and retain a swappable insert. Each swappable insert is configured with a gripping portion on a surface thereof. A sensor is configured to detect when a tubular is in a determined position to permit actuation of the mandrel to urge the slips radially outward such that the slips remain parallel to the longitudinal axis of the mandrel and the inserts are correspondingly urged radially outward. A method and system using the tool for running a tubular and providing a makeup torque.

Abstract: The disclosure provides an electric drill comprising: a housing; a motor for driving the electric drill to work; an output assembly for outputting the power of the motor; a first brake assembly including a driving disc and a driven disc respectively arranged on the transmission shaft and the output shaft, the driving disc being meshed with the driven disc to transmit power in a non-braking state, and the driving disc and the driven disc being displaced in the axial direction to be separated from each other in a braking state to stop transmitting power; and a second brake assembly including a mass block and a micro switch connected with the motor, and in a braking state, the mass block displacing and triggering the micro switch to stop the motor.

Abstract: A cylindrical main body is configured to be inserted into a well tree. A laser emitter is attached to the main body. The laser emitter is arranged to emit a laser beam configured to cut through a metal valve within a well tree. The laser emitter is arranged to emit the laser beam towards the metal valve. A magnet is on a distal end of the body. The magnet is arranged to magnetically capture a sliced portion of the metal valve cut by the laser beam.

Abstract: Implementations described and claimed herein provide systems and methods for extending reach in a wellbore in oil well operations. In one implementation, a first coiled tubing string has a first coil interior surface, and a second coiled tubing string is disposed within the first coiled tubing string and has a second coil exterior surface. An annulus is defined by the first coil interior surface and the second coil exterior surface. The annulus is sealed proximal to a top end of the first coiled tubing string via a first seal and sealed proximal to a bottom end of the first coiled tubing string via a second seal. A fluid is sealed within the annulus at a pressure.

Abstract: Closed loop wellbore configurations with unrestricted geometry for accommodating irregular or challenging thermal gradients within a thermally productive formation are disclosed. A working fluid is utilized in the loop for extraction of thermal energy there from. The loop and the unrestricted geometry are achieved using magnetic ranging of independent drilling operations which intersect from an inlet well and outlet well to form an interconnecting segment. In conjunction with the directional drilling, conditioning operations are incorporated to condition the rock face, cool the entire system, activate the wellbore for treatment to optimize thermal transfer inter alia. The significant degree of freedom in wellbore configuration is further optimized by the absence of mechanical impediments such as casing or liners in the heat transfer areas.

Abstract: A system for completing a well, including a generator, and a plurality of electric load components, each electric load component powered by the generator. The system further includes a load shedding control panel that monitors the generator and, if the generator loses functionality, is capable of deactivating one or more of the plurality of electric load components to reduce the electric load.

Abstract: Systems and methods for cutting objects within a subterranean well include a laser system having a laser drilling head located at a terminal downhole end of a laser tool body directing a head laser beam in a direction downhole. A laser scanner assembly located within the laser tool body has a scanner head directing a scanner laser beam and can move both axially along a length of the laser tool body and rotate around a central axis of the laser tool body. A laser cutter assembly located within the laser tool body has a cutter head directing a cutter laser beam and can rotate around the central axis of the laser tool body. A cable bundle formed of a plurality of fiber optic cables extends from an uphole end of the laser tool body to each of the laser drilling head, the laser scanner assembly, and the laser cutter assembly.

Abstract: A technique facilitates fluid analysis in situ at a downhole location. According to an embodiment, a sample of fluid, e.g. oil, is obtained from a reservoir at the downhole location in a borehole. A downhole sampling system is used to determine contamination of the sample of fluid and to determine other selected characteristics of the sample. The data obtained is then processed to determine a true phase transition property of a native fluid in the sample of fluid. The sample analysis may be performed at selected stations along the borehole during, for example, a well cleanup operation. The immediate analysis of fluid samples downhole facilitates rapid development of an understanding of fluid characteristics in the reservoir, thus enabling an improved oil recovery strategy.