Abstract: A mesh basket device capable of measuring the size of stones includes: a mesh basket, a push rod, a mode switching device, an opening size adjustment device, and an adjusting amount measuring device. The push rod is configured to drive the mesh basket to move. The mode switching device is used to switch between a measurement mode and a stone extraction mode. In the stone extraction mode, the opening size of the mesh basket remains unchanged during the movement of the mesh basket. The opening size adjustment device is connected to the mesh basket. In the measurement mode, the opening size adjustment device is configured to adjust the opening size of the mesh basket during the movement. The adjusting amount measuring device is configured to measure the adjusting amount of the opening size adjustment device, which is in a corresponding relationship with the opening size of the mesh basket.

Abstract: A plug system includes a lower plug, an upper plug, and a sleeve configured to be positioned at least partially within the lower plug, the upper plug, or both. The sleeve defines one or more channels in an outer surface thereof. The sleeve is configured to shift axially from a first position into a second position with respect to the lower plug. In the first position, fluid is prevented from flowing through the one or more channels. In the second position, the fluid is permitted to flow through the lower plug via the one or more channels.

Abstract: A packoff for a wellhead includes a body configured to be positioned in an annulus between the wellhead and an inner tubular above a casing hanger supported in the wellhead, the body including a bore and a lower end, the bore and the lower end being configured to be positioned at least partially around the inner tubular. The lower end is configured to be spaced apart from the casing hanger. The packoff also includes a first load shoulder member configured to be removably connected to the lower end of the body and to engage a surface of the casing hanger so as to form a seal therewith.

Abstract: An assembly includes a cone having a tapered outer surface, a slips assembly positioned at least partially around the tapered outer surface of the cone, and a sealing ring positioned at least partially around the tapered outer surface of the cone. The slips assembly directly engages the sealing ring, such that the slips assembly is configured to transmit a setting force to the sealing ring, which moves the sealing ring on the tapered outer surface of the cone and expands the sealing ring radially outward. The assembly includes an anti-seal ring positioned adjacent to the sealing ring and around the cone. The anti-seal ring is driven along the tapered outer surface of the cone by engagement with the sealing ring.

Abstract: A downhole assembly includes a float tool configured to be connected to a casing string and including one or more one-way valves configured to permit fluid flow in a downhole direction and to prevent fluid flow in an uphole direction, and a first wiper plug configured to be deployed into a well via the casing string and engage the float tool. The first wiper plug comprises a valve element that is configured to prevent fluid flow through the first wiper plug at least in the uphole direction.

Abstract: The present invention provides an in-vivo detection apparatus and system based on a flexible tube. The apparatus includes: a detection component, a main circuit board, a detection circuit board, an auxiliary circuit board, a cable, and an outer tube. The in-vivo detection apparatus has improved welding strength and reliability particularly when a packaging size is limited.

Abstract: An apparatus and method for generating vibration in a downhole tubular, in which the apparatus includes a pulse valve that is configured to open and close intermittently, so as to intermittently vary pressure of a fluid that flows into the downhole tubular and thereby generate vibration in the downhole tubular, and a driver coupled to the pulse valve and configured to open and close the pulse valve. The driver is powered by a source of energy that is not in fluid communication with the downhole tubular.

Abstract: A downhole tool includes a slips assembly, a cone positioned at least partially within the slips assembly, the cone being configured to move axially relative to the slips assembly such that the cone presses the slips assembly radially outward and into engagement with a surrounding tubular in which the downhole tool is deployed, and a seal ring positioned around the cone, the seal ring being configured to be pressed radially outward by engagement with the cone and into engagement with the surrounding tubular.

Abstract: An actuator for setting a downhole tool comprises a first propellant configured to be ignited by an igniter, and a second propellant configured to be ignited by combustion of the first propellant, the first propellant abutting the second propellant such that the first propellant covers an axial end of the second propellant. The first propellant is configured to combust more quickly than the second propellant.

Abstract: A plug assembly for a cementing operation in a well includes a bottom wiper plug configured to land in or near the toe of a well and receive a cement slurry therethrough, a top wiper plug releasably coupled to the bottom wiper plug and configured to land on the bottom wiper plug after the cement slurry is received through the bottom wiper plug, a bridge plug coupled to the top wiper plug and configured to move toward the bottom wiper plug with the top wiper plug after the bottom wiper plug is landed in or near the toe of the well, and a sensor sub coupled to the bridge plug and configured to detect a gate in the well.

Abstract: A wellhead penetrator includes a mandrel having first and second ends, a lock nut that is adjustably connected to the second end of the mandrel, a tapered bowl positioned within the lock nut, the mandrel, or both, and a cable lock assembly at least partially received into the mandrel and the lock nut. Moving the lock nut in an axial direction relative to the mandrel causes the cable lock assembly to grip a cable received therethrough. The penetrator also includes a sealing element positioned at least partially within the mandrel and spaced apart from the tapered bowl, and a backup member positioned adjacent to the sealing element and at least partially within the mandrel. The backup member presses against the sealing element so as to prevent misalignment of the sealing element, and the mandrel, the lock nut, the sealing element, and the backup member receive the cable therethrough.

Abstract: A wellhead penetrator includes a mandrel configured to be positioned in a tubing hanger, a wellhead, or both. The wellhead penetrator also includes a housing positioned at least partially within the mandrel. The housing defines a housing bore formed axially therethrough that is configured to receive upper and lower portions of a cable. The upper and lower portions are separated by a gap. The wellhead penetrator also includes a sealing element positioned at least partially within the mandrel and below the housing. The wellhead penetrator is configured to actuate from a first state to a second state in response to a downward force being exerted on the lower portion of the cable. The wellhead penetrator in the first state has the lower portion of the cable positioned at least partially within the housing such that a splice connection exists between the upper and lower portions of the cable.

Abstract: A downhole tool includes a tubular, an inner valve assembly positioned in the tubular, and a body positioned radially between the inner valve assembly and the tubular, the body at least partially made from a bonding agent configured to secure the inner valve assembly in the tubular.

Abstract: A method for applying a composition to a substrate, and a downhole component, of which the method includes thermal spraying a layer of the composition onto the substrate, the substrate being provided by a downhole component, the layer resulting from the thermal spraying having a thickness of at least about 0.10 inches and being configured to remain bonded to the downhole component when used downhole in a well, the composition being chromium-free.

Abstract: A downhole tool includes a main body, and a setting member configured to press the main body radially outwards so as to set the main body with the surrounding tubular, made at least partially from a dissolvable material configured to dissolve in a well fluid, and defining a bore therein. The tool also includes an acid pill positioned in the bore of the setting member. The acid pill contains an acid therein, and is made at least partially from a dissolvable material configured to dissolve in the well fluid such that the acid mixes with the well fluid upon the acid pill at least partially dissolving. The acid mixed in the well fluid increases a rate at which the dissolvable material of the setting member dissolves in the well fluid.

Abstract: a dilatable balloon catheter, comprising: a guide wire inserted and disposed in the inside of the catheter, an operation portion is fixedly connected to one end of the catheter, a balloon is disposed at the outer side of the catheter remote from the operation portion, the lumen of the catheter and the inner cavity of the balloon are connected by a communication structure provided on the catheter, the guide wire includes a first guide wire and a second guide wire which are separated from each other, the rear end of the first guide wire is connected to insertion-extraction structure in the rear end of the operation portion, the second guide wire is fixed to the inside of the catheter by a fixing process.

Abstract: A valve assembly for use in a wellbore includes a housing defining a bore that extends axially therethrough, a valve seat positioned in the housing, and a valve element movably positioned in the housing. The valve seat and the valve element are concentric to one another, but non-concentric with the housing, such that a centerline defined through the valve seat and the valve element is offset from a central axis of the housing. The valve element is linearly actuatable relative to the housing between a closed position in which the valve element engages the valve seat and blocks the bore and an open position in which the valve element permits flow of fluid therethrough.

Abstract: A downhole tool includes a mandrel configured to be coupled to a liner, the mandrel defining a first port and a second port, the first and second ports being axially offset from one another and extending radially through a wall of the mandrel, a slips assembly coupled to the mandrel, an outer cylinder received around the mandrel and configured to transmit an axially-directed force onto the slips assembly, and a retaining assembly positioned radially between the mandrel and the outer cylinder. The retaining assembly has a first configuration that prevents the outer cylinder from moving relative to the mandrel, and a second configuration that permits the outer cylinder to move axially along the mandrel and set the slips assembly. The retaining assembly is configured to actuate from the first configuration to the second configuration in response to a pressure in the first port exceeding a pressure in the second port.

Abstract: A downhole tool system includes a downhole tool. The downhole tool includes a body having a bore formed axially-therethrough. An inner surface of the body defines an asymmetric shoulder. The downhole tool also includes an upper cone configured to be received within the bore of the body from an upper axial end of the body. The upper cone is configured to move within the body in a first direction from the upper axial end toward the shoulder in response to actuation by a setting assembly, which forces at least a portion of the body radially-outward.