171 results about "Bottom hole assembly" patented technology

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.

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.

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.

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.

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.

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.

Method for transmitting digital data between a bottom hole assembly and a surface assembly of a drilling rig, wherein at least one of the bottom hole assembly and the surface assembly comprises a transmitting transducer actuatable to generate acoustic waves propagating in a drilling fluid and the other of the bottom hole assembly and the surface assembly comprises a receiving transducer configured to detect acoustic waves, comprising the following steps : processing in sequence the data by means of convolutional coding, an interleaving operation and at least one spread spectrum modulation technique, obtaining a processed digital signal; - converting the processed digital signal into an analog signal; - actuating the transmitting transducer in such a way as to generate, in the drilling fluid, acoustic waves that correspond to the analogue signal; receiving the analog signal through the receiving transducer; converting the analog signal into a received digital signal; - processing in sequence the digital signal received by means of at least one demodulation technique, one "de- interleaving" operation and one convolutional decoding, obtaining the received data.

A method for downhole measurement operations. The method may include taking one or more measurements with a sensor disposed in a bottom hole assembly, converting the one or more measurements into one or more revolutions-per-minute (RPM) measurements, identifying one or more frequency components of the one or more RPM measurements using a Fast Fourier Transform, identifying one or more peaks of the one or more frequency components, and identifying torsional oscillation based at least in part on the one or more peaks. The method may be performed on a non-transitory computer-readable tangible medium comprising executable instructions that cause a computer device to take one or more signal measurements, identify one or more frequency components of the one or more signal measurements using a Fast Fourier Transform, and identify one or more peaks of the one or more frequency components.

The invention relates to the technical field of unconventional oil and gas resource development, in particular to a real-time control method for safe borehole drilling of a horizontal well, which comprises the following steps of: fitting stratum forced vectors of all drilled sections and actual track adjustment vectors of a bottom drilling tool combination to obtain a stratum-drilling tool coupling mapping function; establishing a system error vector for predicting the to-be-drilled section by taking the stratum forced vector of the to-be-drilled section and the actual trajectory adjustment vector of the bottom drilling tool combination of the drilled section as a reference and combining a stratum-drilling tool coupling mapping function; and actual trajectory control parameters of the section to be drilled are determined according to the prediction system error vector, so that the borehole trajectory meets the geological target spot requirement. According to the real-time control method for horizontal section track adjustment, accurate pre-judgment of track adjustment can be achieved, improvement of the precision of horizontal section track adjustment is facilitated, the mechanical drilling speed is increased, and the real-time control method is particularly suitable for well track adjustment in coal seam horizontal section drilling.

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.

This invention relates to the field of circulation bypass tools, specifically a downhole drilling circulation bypass tool and an unlimited circulation bypass method. The former includes a main body, an upper guide sleeve, a lower guide sleeve, a central tube, an indexing sleeve, an activation ball seat, and an isolation ball seat. The main body contains an indexing sleeve, with an upper guide sleeve and a lower guide sleeve located above and below it, respectively, to assist in the indexing sleeve's rotation. The upper and lower guide sleeves are installed at corresponding positions on the main body. A central tube is installed inside the indexing sleeve, with its lower end located below the lower guide sleeve. This invention features a reasonable and compact structure, is easy to use, and utilizes a combination of an upper guide sleeve, an indexing sleeve, and a lower guide sleeve to control the periodic alignment and misalignment of the circulation holes, enabling the tool to switch between different working states. The absence of a ball basket at the bottom shortens the effective length of the drill string, facilitating bottom hole assembly design, wellhead installation, and transportation.

A method includes obtaining, with an edge computing device disposed in a bottom hole assembly of a drilling system, logging while drilling data. The method further includes determining, with the edge computing device, at least one interpreted quantity of a subsurface using one or more artificial intelligence (AI) models processing the logging while drilling (LWD) data. The method further includes determining, with the edge computing device, an optimal set of data transfer parameters for a telemetry system governed by a set of data transfer parameters, to telemeter the at least one interpreted quantity, where the set of data transfer parameters are continually updated to the optimal set of data transfer parameters while the logging while drilling data is being acquired. The method further includes transmitting, with the edge computing device, one or more guidance control parameters to a geosteering system based on the at least one interpreted quantity.