220 results about "Bottom hole assembly" patented technology

Some implementations include a system having at least one thermally insulated coiled tubing and a bottom hole assembly (BHA) connected to the at least one thermally insulated coiled tubing. The BHA includes at least one capacitor, the at least one capacitor configured to store electrical power. The BHA also includes at least one electrode electrically coupled to the at least one capacitor, the at least one electrode configured to receive the stored electrical power from the at least one capacitor and to periodically emit pulsed power discharges into a subsurface formation.

An automated system and process for vertically assembling and disassembling a wireline bottom hole assembly (BHA) comprises one or more robots, and a structure comprising a receiver assembly. The receiver assembly comprises a conduit adapted to permit respective bottom hole assembly sections to be moved between an interior and an exterior of the structure. The robots are structured to retrieve bottom hole assembly components from bins and assemble bottom hole assembly sections that make up a bottom hole assembly. The robots move each section to the receiver assembly to connect the section to a partial assemblage comprising a wireline and respective subassemblies. After use of the BHA, the robots disassemble sections of the BHA and move the components to used component bins and / or to a dispensing shoot leading to a waste container. The system has modules adapted to provide information regarding the status of components and the BHA.

An approach to milling obstructions in sub-hydrostatic wells uses a bottom hole assembly. The bottom hole assembly includes a tool to collect debris downhole and then mechanically, rather than hydraulically, transport the debris to the surface after milling.

A method can include receiving data for a bottom hole assembly of a drillstring and a drill plan; generating candidate trajectories using at least a portion of the data; generating drill command schedules for the candidate trajectories; ranking the candidate trajectories based at least in part on the drill command schedules; and outputting at least a top ranked candidate trajectory and its corresponding drill command schedule.

Methods and systems for performing a formation pressure test include inserting a bottom hole assembly (“BHA”) into a wellbore. The BHA includes a drill bit and a formation testing tool with a battery and a fluid powered generator. An initial formation pressure test is performed while powering the formation testing tool with the fluid powered generator during the entire initial test. At least a portion of a formation pressure test is performed powering the formation testing tool with the battery during while the fluid powered generator is unavailable due to insufficient fluid circulation in the wellbore. The method also includes determining, using a processor, at least one characteristic of the formation based on results of the initial formation pressure test and the formation pressure test.

A bias subsystem for a steerable bottom hole assembly (BHA) of a rotary steerable drilling system includes a housing having a rotational axis, and at least one hydraulic thrust structure associated with a periphery of the housing, each including a thrust paddle interfacing with at least one piston at the periphery of the housing. A hinge structure of each hydraulic thrust structure includes a body having a proximal end pivotably connected to the housing about a respective first pivot axis and a distal end pivotably connected to a proximal end of the thrust paddle about a respective second pivot axis. The first and second pivot axes each extend parallel to the rotational axis of the housing. The thrust paddle is translatable between a retracted position and an extended position.

Method of removing casing from a well, in which an annulus between the outside of the casing and the inside of a surrounding downhole body is at least partially filled by debris, the perforated section of casing is washed in casing lengths shorter than the perforation length and an attempt made to pull the casing after each shorter length is washed. If the casing is free after washing only a shorter section of the perforated section of casing then it can be recovered and saves the washing time. A bottom hole assembly is described which includes a downhole power tool to exert a greater force to pull the section of casing between washing steps.

System and method for a bottom hole assembly (BHA) in production tubing including an electrical submersible pump (ESP), multi-resettable packer assembly, sensor, power and communications bus, and control system. The multi-resettable packer assembly includes a multi-resettable packer, a port sub hydraulically connecting production tubing to the ESP, an inner mandrel inside the multi-resettable packer axially movable within the multi-resettable packer and port sub, and a stroker tool configured to compress and decompress the multi-resettable packer to seal and unseal an inner surface of production tubing. The stroker tool includes slips to grip the inner surface and a piston that extends from and retracts into the stroker tool. The sensor is configured to measure operating data including a pressure measurement. The power and communications bus powers and transmits signals to the BHA. The control system monitors operating data and controls the stroker tool via the power and communications bus.

A method can include receiving input for a drilling operation that utilizes a bottom hole assembly and drilling fluid; generating a set of offset drilling operations using historical feature data, where the historical feature data are processed by computing feature distances; performing an assessment of the offset drilling operations as characterized by at least feature distance-based similarity between the drilling operation and the offset drilling operations; and outputting at least one recommendation for selection of one or more of a component of the bottom hole assembly and the drilling fluid based on the assessment.

A bottom hole assembly includes a downhole conveyance that is extendable from a terranean surface, through a wellbore, and to a subterranean formation; and a perforating tool configured to couple to the downhole conveyance and create at least one pair of perforations. The at least one pair of perforations is arranged along a longitudinal direction of the wellbore such that a first perforation in the at least one pair of perforations is oriented at an azimuthal offset angle relative to a second perforation in the at least one pair of perforations.

A BHA (bottom hole assembly) hander comprises an arm, a support structure capable of securing to a tower base, a hydraulic cylinder connected pivotally between the arm and the support structure, actuating the hydraulic cylinder can drive the arm rotating relative to the support structure. When used to deploy a BHA, securing the support structure of the BHA hander to a tower base of the tower, loading the BHA onto the arm of the BHA hander and activating the hydraulic cylinder to raise the BHA hander to a vertical position.

In some implementations, a plurality of thermoelectric devices may be arranged to cool one or more components of a downhole drilling component during drilling operations. A current can be applied to one or more thermoelectric devices to generate a cooling effect. The thermoelectric devices can be located and arranged so that they cool some or all of a bottom hole assembly or components thereof, such as one or more sensors, batteries, processors, electrics, and the like. The thermoelectric devices also may be located and arranged to cool sensors, batteries, other downhole components, and / or drilling mud in a wellbore during drilling operations. A plurality of thermoelectric devices may be used to generate electric power downhole from a temperature difference. The electric power may be used to power sensors, processors, charge batteries, and be used by one or more downhole electric components, such as those in a bottom hold assembly. One or more thermal storage devices may be used with the thermoelectric devices to store thermal energy for use when needed. A control system may be used to control the activation and / or deactivation of one or more thermoelectric devices to provide cooling when desired.

A method is disclosed for receiving, from a downhole system, data at a transmitter module of an intra-bottom hole assembly (BHA), wherein the transmitter module comprises a magnetic transmission antenna; transmitting, via a wireless short-range communication using the magnetic transmission antenna, the data to a receiver module of the intra-BHA, wherein the transmitter module and the receiver module form an intra-BHA network using the wireless short-range communication; receiving, via the wireless short-range communication, the data at the receiver module; transmitting the data to a measurement while drilling (MWD) tool; receiving, at the MWD tool, the data; and transmitting, via a type of telemetry, the data from the MWD tool to a surface processor.

Systems and methods provide a bottom hole assembly for a wellbore that includes a drill bit and multiple drilling tools. The multiple drilling tools include multiple sensors configured to capture a multiple instances of a common measurement type at multiple locations along a drill string. The multiple drilling tools also include processing circuitry configured to compare the multiple instances of the common measurement type to determine a difference among the multiple instances. The processing circuitry is also configured to determine that the difference is greater than a threshold corresponding to an inference of high frequency torsional oscillation. Furthermore, the processing circuitry is further configured to send an indication of an occurrence of high frequency torsional oscillation in the bottom hole assembly.

A bottom hole assembly includes a downhole conveyance that is extendable from a terranean surface, through a wellbore, and to a subterranean formation; and a perforating tool configured to couple to the downhole conveyance and create a perforation cluster in the subterranean formation. The perforation cluster includes perforations arranged along a longitudinal direction of the wellbore. The perforations includes one or more first perforations extending along a first azimuthal direction, one or more second perforations extending along a second azimuthal direction at a first offset angle with respective to the first azimuthal direction, and one or more third perforations extending along a third azimuthal direction at a second offset angle with respective to the first azimuthal direction. The one or more second perforations and the one or more third perforations are alternative with each other along the longitudinal direction of the wellbore.

A method and a system comprising: disposing a bottom hole assembly (BHA) into a wellbore, wherein the BHA comprises a measurement assembly; acquiring one or more measurements with the measurement assembly; acquiring historical data from the wellbore; extracting relevant information from the historical data; training a machine learning (ML) model with the relevant information to form a trained ML model; and providing an answer to a question utilizing the trained ML model.

Systems and methods for drilling a first borehole along a planned first path using a first bottom hole assembly (BHA) while drilling a second borehole using a second BHA along a second path having a defined spatial relationship to the first path. The method includes steps of measuring a distance and a direction of the first BHA relative to the second BHA, automatically adjusting the second path based in part on the measured distance and the measured direction so as to maintain the spatial relationship, and automatically steering the second BHA to follow the adjusted second path.

A bottom hole assembly (BHA) deployable in a production tubing includes a foam assembly and a swab assembly. The foam assembly includes a check valve unit coupled to a chemical canister. The swab assembly is coupled to the foam assembly. The swab assembly includes a swab mandrel and a plurality of swab cups. A method for initiating natural flow in a well includes conveying a bottom hole assembly (BHA) on a slickline to a first depth into a production tubing, holding the BHA stationary in the static fluid, releasing a foaming chemical from the chemical canister to the production tubing via the check valve unit, activating the foaming chemical to form a foam, opening a well flowline, and swabbing at least a portion of the production tubing with the swabbing assembly of the BHA by at least partially removing the BHA from the production tubing.

Systems and methods provide a bottom hole assembly for a wellbore that includes a drill bit and multiple drilling tools. The multiple drilling tools include multiple sensors configured to capture a multiple instances of a common measurement type at multiple locations along a drill string. The multiple drilling tools also include processing circuitry configured to compare the multiple instances of the common measurement type to determine a difference among the multiple instances. The processing circuitry is also configured to determine that the difference is greater than a threshold corresponding to an inference of high frequency torsional oscillation. Furthermore, the processing circuitry is further configured to send an indication of an occurrence of high frequency torsional oscillation in the bottom hole assembly.

Described is a system for milling past wellbore restrictions. The system includes multiple components axially connected to form a bottom hole assembly (BHA). The BHA includes an external coil connector, a motor head assembly (MHA), a metal-to-metal (MTM) motor, a bypass circulation valve (BCV), and a mill component.

A downhole tool comprises a tool housing defining a flow passage therethrough from a first to a second end thereof. A poppet is axially movable on a poppet mandrel positioned in the tool housing. The poppet mandrel has at least one outlet port defined therein. A pilot valve is rotatable about the poppet mandrel. Rotation of the pilot valve opens and closes the at least one outlet port in the poppet mandrel to permit and block flow therethrough, and wherein the opening and closing of the at least one outlet port moves the poppet axially on the poppet mandrel.

The invention relates to the technical field of drilling, and provides a bottom drilling tool assembly, an underground water exploration and drainage drill hole deviation correcting system and a deviation correcting method thereof, and the bottom drilling tool assembly comprises a drill rod, a drill bit and a centralizer assembly; the centralizer assembly comprises a centralizer body, a first wear-resistant part and a second wear-resistant part, a plurality of ribs are arranged on the outer surface of the centralizer body in the axial direction, the ribs are evenly distributed in the circumferential direction of the centralizer body, and the outer edges of the tops of the ribs jointly define a virtual circumcircle; the first wear-resistant component and the second wear-resistant component are respectively arranged at two ends of the centralizer main body, and the first wear-resistant component is connected with a drill bit; the second wear-resistant part is connected with the drill rod; the diameters of the first wear-resistant part and the second wear-resistant part are both larger than or equal to the diameter of the circumcircle and are both smaller than the diameter of the drill bit. The wear resistance of the centralizer assembly is improved, the stability and reliability of a bottom drilling tool assembly are ensured, the drilling deviation rectifying effect can be improved, and the well track control capacity is optimized.

A method for calibrating a steering model may comprise estimating an initial condition for one or more variables in the steering model and calibrating the steering model with a Markov Chain Monte Carlo Simulation (MCMC). A drilling system may comprise a bottom hole assembly, a drill string connected to the bottom hole assembly, and an information handling system connected to the bottom hole assembly. The information handling system may be configured to process one or more measurements from the bottom hole assembly, calibrate a steering model based at least in part on the one or more measurements, adjust a control logic based at least in part on the steering model, and adjust the bottom hole assembly based at least in part on the control logic.

A system includes a bottom hole assembly (BHA), including at least one valve including a bistable actuator coupled to a stem having a valve element, wherein the bistable actuator is configured to move the stem along an axial path of travel to position the valve element in an open position or a closed position relative to a valve seat. The at least one valve also includes a pressure-compensated seal disposed about the stem, wherein the pressure-compensated seal is disposed between an interior fluid chamber and a fluid flow path through the at least one valve.

Systems and methods disclosed herein may comprise a bottom hole assembly; and a cable disposed in the wellbore. In examples, the cable may comprise a superconducting material configured to provide at least power to the bottom hole assembly; one or more liquid supply channels configured to supply a fluid to reduce temperature of the superconducting material; and one or more liquid return channels. Further, cryogenic liquid may be pumped through the liquid supply channels.

A system includes a bottom hole assembly (BHA) that includes a drill bit configured to drill a pilot hole in a subterranean formation, such that the drill bit provides a first point of contact between the BHA and the subterranean formation. The BHA includes a steering pad assembly that includes one or more steering pads each configured to move over a path of travel between a retracted position and an extended position to provide a second point of contact between the BHA and the subterranean formation, and a reamer configured to expand the pilot hole into a borehole, such that the reamer provides a third point of contact between the BHA and the subterranean formation. The system includes a controller configured to steer the BHA via the first, second, and third points of contact and adjustments to the second point of contact via control of the steering pad assembly.

Devices, systems, and methods for a bottom hole assembly to form perforations are provided. An abrasive jet perforating tool is configured to couple to a downhole conveyance that is extendable from a terranean surface, through a wellbore, and to a subterranean formation. The abrasive jet perforating tool is configured to inject abrasive particles along a radial direction to create perforations in the subterranean formation. A hydraulically actuated subassembly is attached to the abrasive jet perforating tool and configured to move the abrasive jet perforating tool towards or away from the subterranean formation along the radial direction.

A method of drilling a wellbore is described using a BHA including an RSS that comprises an adjustment mechanism movable between first and second configurations to alter a drilling direction of the BHA, BHA sensor(s), and a controller. The method includes drilling, using the BHA, the wellbore with the adjustment mechanism in the first configuration; receiving, by the first controller, real-time data including inclination and azimuth angle data from the BHA sensor(s); determining, by the first controller and based on the real-time data, a relationship between an actual measurement and a target measurement that is associated with a target well path; automatically moving, by the first controller and in response to the determination of the relationship, the adjustment mechanism from the first to the second configuration; and drilling, using the BHA, the wellbore while the adjustment mechanism is in the second configuration.

A system comprising: a bottom hole assembly having a MWD tool comprising: a wireless telemetry module; sensor(s); a MWD processor; and medium storing instructions that when executed by the MWD processor cause the MWD processor to: obtain, from the sensor(s), a measurement value of a downhole parameter; determine an encoding format for the measurement value by comparing the measurement value to at least two ranges with each range associated with a separate encoding format having a compression level; apply the determined encoding format to the measurement value to generate a compressed measurement value; and transmit, utilizing the wireless telemetry module using wireless telemetry, the compressed measurement value; and a surface computer system configured to decode the compressed measurement value and utilize the decoded measurement value.

The application relates to a kind of calculation methods of the dynamic characteristics of drill string under simple harmonic impact, which comprises the following steps: one, drill pipe, collar, bottom hole assembly, drill bit are equivalent to two-degree-of-freedom axial and torsional coupling physical model of lumped mass;Two, based on the related theory of vibration mechanics, the mathematical model of two-degree-of-freedom axial and torsional coupling is described by Newton's theorem, and the mathematical model of drill string dynamics is established;Three, the mathematical model is modified by using state-dependent time delay method;Four, according to the dynamic characteristics of the drill string, the amplitude and angular frequency of the applied simple harmonic dynamic load are adjusted, and the dynamic characteristics of the drill string system are analyzed and determined.The application analyzes the influence of the amplitude and angular frequency of the applied simple harmonic impact on the dynamics of the drill string, which provides theoretical guidance for controlling the motion characteristics of the drill string, speeding up and reducing cost, and ensuring the safety of downhole.