Abstract: In several aspects, a processor receives a set of parameters characterizing sensor data from a plurality of sensors corresponding to drilling operations of a drill assembly for boring the Earth, and a condition of the drill assembly. The processor selects, by a drill assembly machine learning model executed by the processor, a subset of parameters that are related to the condition of the drill assembly. The drill assembly machine learning model uses an historical record of the set of parameters and a set of conditions of the drill assembly collected over time to determine whether a parameter is related to each condition. The processor applies weights to each parameter of the subset of parameters and weights to different levels of each parameter of the subset of parameters, producing a weighted subset of parameters and outputting the weighted subset of parameters.

Abstract: A wireline cutting tool. The wireline cutting tool comprises an elongated tubular body. A knife housing resides within the tubular body proximate an upper end, while a plunger resides within the tubular body proximate a lower end. An electric wireline passes through a bore of the knife housing and the plunger en route to an electrical connection sub. The electrical connection sub includes a pin that transmits signals from the electric wireline down to a downhole tool. The plunger is configured to slide up the bore of the lower sub in response to a first upward shear load applied by the wireline. This causes the plunger to act against knives residing within the knife housing. The knives are configured to travel up the bore of the upper sub in response to a second upward shear load applied by the plunger, pinching the wireline until severed. The second shear load is greater than the first shear load, creating a two-stage cutting tool.

Abstract: A connection system for a lid in a beacon housing. The lid is connected to the housing at a tab at a first end, after a lip of the lid is placed under a shelf at its second end. The tab has a cross-bore for receiving a connection pin through both the cross-bore and corresponding holes in the housing which form a continuous passage. The lid is placed under tension to reduce relative vibration between the lid and the housing. A set screw is placed within the tab to place a force on the connection pin. Further set screws are distributed about the lid and place the lid in tension relative to the housing. The lid can be removed by reducing the tension provided by the set screws, removing the connection pin, and adjusting the lid such that it is no longer under the shelf of the housing.

Abstract: A gas operated tool for setting a downhole device in a wellbore includes a pressure sub having a first end, a second end, and an inner chamber defining a volume. The inner chamber is configured to receive a power charge. In addition, the tool includes a mandrel operationally attached to the second end of the pressure sub. Further, the tool includes a setting sleeve slidably disposed on the mandrel. The setting sleeve is configured to alternate between a first running position and a second setting position when axial force is applied to the setting sleeve. Still further, the tool includes a dampening assembly coupled to the setting sleeve. The dampening assembly is configured to regulate the axial force applied to the setting sleeve.

Abstract: A wireline release head system includes a housing, a cutter box situated within the housing, a fire control switch, and a wireline extending through the cutter box and in electrical communication with a control unit and the fire control switch. The cutter box includes a piston assembly operable to move within a first track and a cutter knife operable to move within a second track. The second track is angled relative to the first track. The fire control switch is in communication with a fire detonator, which is selectively activatable to detonate a power charge. An electrical signal selectively sent through the wireline from the control unit to the fire control switch detonates the power charge, which causes the piston assembly to move within the first track and contact the cutter knife causing the cutter knife to move within the second track, thereby severing the wireline.

Abstract: Disclosed herein is a system and associated method for robotic drill rod handling. The system includes a frame, a drill rod magazine for storing and dispensing drill rods, the magazine removably coupled to the frame, a robotic arm for manipulating drill rods, the robotic arm coupled to the frame and a drill rod end effector, for grasping drill rods, the end effector coupled to the robotic arm. The system is configured to manipulate the robotic arm such that the end effector surrounds a second drill rod in a grasping position of the system, grasp the second drill rod with the end effector, manipulate the second drill rod to align the second drill rod with a first drill rod which is coupled to a drilling rig and rotate the second drill rod to couple the second drill rod to the first drill rod.

Abstract: A tool assembly deployed in a wellbore with a running string includes a pressure booster sub. The booster sub is located between a first tool and a second tool. The first tool upstream of the booster sub is exposed to a relatively low pressure via the running string. The pressure booster sub is exposed to the relatively low pressure, and creates a relatively high pressure downstream of the booster sub. The second tool, downstream of the booster sub, is actuated by the relatively high pressure. The booster sub includes a piston. The piston includes a piston head with a first cross-sectional area, and a piston rod with a second cross-sectional area less than the first cross-sectional area.

Abstract: A drilling rig assembly and methods of assembling a drilling rig are described. The drilling rig assembly can include a mast, a traveling assembly coupled to the mast, and a racking board configured to be removably coupled to the traveling assembly and removably coupled to the mast.

Abstract: A decentralizer tool and a method of operating the decentralizer tool include a housing sized to enter a wellbore. An adapter is coupled to an end of the housing to connect the decentralizer tool to a bulk density tool. A spring partially defines an outer diameter of the decentralizer tool. The spring includes a first spring end, a second spring end, and an intermediate spring section. A spring support member includes an exposed portion and a hidden portion internal to the housing. A motor is internal to the housing and an actuator is interposed between the spring support member and the motor. The actuator moves the spring support member in an axial direction along a tool axis between a first target position and a second target position of the spring support member to change a state of the spring.

Abstract: A downhole tool comprises a cylinder, piston, and piston rod, the piston rod comprising first and second ends, the first end being external to the cylinder and having the capacity to be operatively connected to a sucker rod string or a sucker rod pump, the second end being positioned within a sealed cylinder chamber and attached directly or indirectly to the piston. The cylinder confining fluid within the cylinder chamber. The piston is coaxially positioned within the cylinder chamber such that the piston and cylinder share a central longitudinal axis. The piston and cylinder each comprise respective sidewalls, the respective sidewalls defining a lateral space between the piston and the cylinder. The lateral space and a piston conduit have the capacity to permit the fluid to move from a first chamber to a second chamber and to permit the fluid to move from the second chamber to the first chamber.

Abstract: A concentric wet-mate connector assembly can include a male portion having a male electrical contact and a male insulation band positionable on a surface of the male portion. The wet-mate connector assembly can also include a female portion having a female electrical contact and a ceramic female insulation band formable on a surface of the female portion. The female portion the wet-mat connector assembly is positionable to receive the male portion to form an electrical connection with the male portion, where the male insulation band and the ceramic female insulation band together form an insulator chamber of the concentric wet-mate connector assembly.

Abstract: A sub-assembly, rock drilling rig and method of absorbing vibrations in rotary and DTH drilling. The sub-assembly is for transmitting torque and axial forces between a rotating head and a drilling tool. There is an axial floating arrangement for providing an allowed limited axial relative movement between coupling elements of the sub-assembly. The arrangement comprises several axial drive pins for transmitting the torque. First ends of the drive pins are mounted immovably and second ends are mounted with clearances, whereby the drive pins can bend under torsional shocks. Thus, the drive pins serve as torsional dampening elements.

Abstract: A system can determine, based on an accumulation of geological material in a wellbore, a pack off indicator indicating a likelihood of a downhole tool being immobile in the wellbore. The accumulation of geological material in the wellbore comprises cuttings resulting from an action of the downhole tool positioned in the wellbore and settled cavings resulting from instability in the wellbore. Determining the pack off indicator can include estimating the accumulation of geological material in the wellbore. Determining the pack off indicator additionally can include dividing the estimated accumulation by a volume of a wellbore annulus defined by a first set of wellbore piping and a second set of wellbore piping positioned in the wellbore. The system can automatically adjust a wellbore operation using the pack off indicator by controlling a flow of circulating fluid in response to the pack off indicator exceeding a predetermined threshold.

Abstract: What is provided is a method and apparatus wherein a rotating and reciprocating swivel of adjustable stroke length and shearable by ram blow out preventers can be detachably connected to an annular blowout preventer thereby separating the lower wellbore from the riser. In one embodiment the mandrel of the swivel extends through a sleeve/housing. The sleeve/housing has a wiping arrangement of improved configuration that wipes debris from the mandrel, preventing entry of the debris into the sleeve/housing. Ports enable discharge of the removed debris from the area of the sleeve/housing.

Abstract: The disclosure provides an automated process for determining the wear condition of a downhole tool that removes the subjectivity associated with manual observation. The automated process can advantageously evaluate a wear condition of a downhole tool using visual analytics and real-time analysis after the downhole tool has been extracted from the wellbore. An example of a method includes: (1) securing a downhole tool in a rig assembly, (2) obtaining, using sensors, surround tool data of the downhole tool in the rig assembly, wherein the surround tool data includes a first set of surround tool data obtained before a downhole operation by the downhole tool and a second set of surround tool data obtained after the downhole operation, and (3) automatically determining a wear condition of the downhole tool in real time by comparing the second set of surround tool data to the first set of surround tool data.

Abstract: In at least one embodiment, a slip hanger or a packoff to be used with oilfield equipment is disclosed as having slip segments to be supported by a slip bowl and to be associated with pins that have a self-retractive attribute. The self-retractive attribute is to allow engagement of the slip segments with a housing of the oilfield equipment based in part on a first direction of movement of the plurality of slip segments and is to allow an interface with individual ones of the plurality of slip segments in a second direction of movement for the plurality of slip segments.

Abstract: A system may include a centralizer configured to be disposed in a radial gap formed between a downhole tubular and a sonde housing. The centralizer may include at least one support feature having a first circumferential end feature, a second circumferential end feature, and an elongated body portion extending axially along a centralizer axis and extending circumferentially about the centralizer axis from the first circumferential end feature to the second circumferential end feature. The elongated body portion may be corrugated with radially inward extending portions and radially outward extending portions alternating along the elongated body portion. Additionally, the radially inward extending portions may be configured to contact the sonde housing and the radially outward extending portions may be configured to contact the downhole tubular to hold the sonde housing in a centralized position with respect to the downhole tubular.

Abstract: Blowout preventer (BOP) systems and methods for operating a BOP. The BOP systems include an apparatus configured to isolate wellbore fluids and a BOP housing radially surrounding the apparatus. The apparatus includes a packing unit and a piston located downhole of the packing unit. The packing unit includes an elastomeric packer having first metal inserts and second metal inserts disposed axially through the elastomeric packer. The first metal inserts and the second metal inserts have an elongated portion coupled to a first end having a first prong and a second end having a second prong. Methods for operating a BOP system include providing the BOP system to a wellhead, the BOP system including an apparatus configured to isolate wellbore fluids, applying a pressure to the apparatus in a series of stages, and sealing a central circumference of the apparatus when a closing pressure is applied to the apparatus.

Abstract: A drilling system may have a drilling rig with a drill string including a BHA with a drill bit. The method may include determining a current BHA location and a future BHA location based on the current BHA location and a current trajectory of the BHA and comparing the future BHA location to a target drilling path. When the future BHA location is a predetermined distance from the target drilling path, then a plurality of geometric convergence paths may be generated, each providing a convergence solution from the current BHA location toward the target drilling path. The method may include determining (i) a distance to drill, (ii) an overall curvature, and (iii) a time required for drilling, of each of the geometric convergence paths and selecting a geometric convergence path responsive to the above. The wellbore may be drilled in accordance with the selected one of the plurality of geometric convergence paths.

Abstract: An isolation sleeve for a wellbore includes a sleeve body and a torque sleeve. The torque sleeve threadedly couples to the sleeve body. The torque sleeve includes a compression shoulder. The isolation sleeve includes a compression seal positioned about the torque sleeve between the compression shoulder and the sleeve body. The isolation sleeve also includes a lock ring coupled to the sleeve body that engages a packoff. The lock ring is urged into engagement with the packoff by an energizing ring.