Abstract: A field configurable vehicle includes bladders located interior of the vehicle hull walls. One or more of the bladders can be filled with fluids of varying densities to manage the buoyancy, mass properties, and thermal heat dissipation of the vehicle.

Abstract: A device for grinding a side surface of an inner wall of a borehole comprises a base on which a direct current motor is installed on the base, one end of the direct current motor is electrically connected to a controller, and the other end of the direct current motor is in drive connection with a second rotating shaft of a right-angle drive steering gear by a universal drive joint. The controller is connected to an air pressure valve by a cable, and the air pressure valve is connected to an air pump through an air pipe. One end, away from the universal drive joint, of the right-angle drive steering gear is provided with a grinding cylinder. Grinding heads are respectively connected to first rotating shafts at both sides of the right-angle drive steering gear.

Abstract: An apparatus for combined coring and drilling in a wellbore that includes a core drilling assembly with a coring drill head, an outer tubing for conveying forces to the drill head, an inner tubing with a lower end adapted for receiving a core sample. The apparatus further includes: a lifting device; closure elements with embedded cutting implements for cutting the core sample; and one or more controller device(s) for controlling activation and deactivation of the closure elements. The closure elements are connected to the core drilling assembly below an opening of the inner tubing such that, when in an open position the core sample can enter the inner tubing, and when in a closed position core material is cut and the cut core material is prevented from entering the inner tubing and exits to the borehole annulus via drill head openings provided in the wall of the coring drill head.

Abstract: A control mechanism of a core drilling rig includes a central rod (14) and an outer barrel (23). The central rod (14) passes through, from the rear to the front, the inner cavities of a fluid channel activation module, an outer barrel unlocking module, a flow diverging module, and a coring barrel connecting module. The coring barrel connecting module comprises a core tube connecting pipe (62), a core ring bearing (63), a bearing inner ring (64), a ball A (6211) and a ball B (6411). The core tube connecting pipe (62) is connected at the front side thereof to the coring barrel (65). The bearing inner ring (64) is inside the core tube connecting pipe (62). The core ring bearing (63) is connected to an inner wall of the outer barrel (23).

Abstract: A pressured horizontal directional drilling continuous coring device includes a drilling tool assembly, a spear head, a recovery pipe and a core clamping mechanism. An interior of the drilling tool assembly is provided with a drilling tool delivery and in-place reporting mechanism, a bullet positioning mechanism, a core blockage alarm mechanism, a guiding mechanism, a buffer mechanism, and an adjusting mechanism from top to bottom. The recovery pipe is provided with a first and second recovery pipe nozzles. The drilling tool delivery and in-place reporting mechanism includes a top cap, a first spring and a spring cap mounted on one end of the first spring, so that when the first spring is in a compressed state, the spring cap is located at a lower end of the top cap, and a mud path is formed between the spring cap and the top cap.

Abstract: A sealed pressured horizontal directional drilling continuous coring device for engineering geological investigation includes an outer tube assembly and an inner tube assembly matching the outer tube assembly. The outer tube assembly includes a single-wall drill pipe and a dual-wall drill pipe assembly. The inner wall of the dual-wall drill pipe assembly is sequentially provided with a bullet stop head, a bullet room, a suspended seat ring, a positioning inner lock, a positioning outer lock, a first centralizing ring, a lock ring seat and a drill from top to bottom. The inner tube assembly includes a spear head, a first sealing component, a bullet positioning mechanism, a recovery pipe, a second sealing component, an in-place reporting mechanism, a core blockage alarm mechanism, a single-action mechanism, a guiding mechanism, a buffer mechanism, an adjustment mechanism, a core tube and a core clamping mechanism.

Abstract: The present invention relates to a downhole wireline machining tool string for increasing an inner diameter of a well tubular metal structure in a well. The downhole wireline machining tool string has a longitudinal axis and comprises a rotatable tool part comprising a machining tool having a first end part, a second end part, a diameter and a circumference, and a stationary tool part comprising a driving unit configured to rotate the rotatable tool part and powered through the wireline. The machining tool comprises a body having an outer face, and the machining tool further comprising a plurality of inserts, each insert having a length along the longitudinal axis, and the inserts projecting from the outer face of the body and being distributed around the circumference. Furthermore, the present invention relates to a machining tool for increasing an inner diameter of a well tubular metal structure in a well or cutting out a piece, e.g. in a downhole valve.

Abstract: A core catcher includes a catcher rod removably attachable to a core drill. The catcher rod is inserted through a pilot hole in a substrate from which a core is to be removed. A catching element is removably attachable such as by clamping the catching element to a distal end of the catcher rod on an underside of the substrate. A bearing may be disposed between the catching element and the substrate. When severed from the substrate, the core falls only a short distance along the catcher rod and comes to rest on the bearing and the catching element. Thus, the core is inhibited from falling to a floor or ground below the substrate. A bucket may also be supported on the distal end of the catcher rod in order to collect cutting fluid.

Abstract: A coring assembly comprising a body securable at its upper end to a mandrel add at its lower end to a core catcher housing, a ball sleeve slidably disposed about said mandrel and moveable between a first and a second position, a ball closure valve disposed in said body and moveable with said mandrel between the first and second position, the combination operable to remotely cut and collect a loosely consolidated core sample.

Abstract: An assembly for dispensing a core separator ring on the top of a previously-cut core that is ejected from a core-cutting bit in a storage bin. The core separator assembly is integral with the forward end of the core ejector system.

Abstract: A method and apparatus for acquiring a plurality of sidewall cores from an earth formation intersected by a wellbore while a coring tool is located downhole. A sidewall coring tool is provided having an internal core receptacle for receiving and storing sidewall cores in serial orientation. The coring tool incorporates a movable bit box providing rotary support and linear coring and retracting movement of a rotary coring bit. A bit box tilting and rotation actuator is incorporated within the coring tool for achieving breaking at the core sample from the formation and for selectively positioning of the bit box and rotary coring bit at a coring position where the bit is oriented in normal relation with the axis of the wellbore and a core ejecting position where the rotary coring bit is positioned in registry with the internal core receptacle for deposit of cores in serially oriented relation therein.

Abstract: The application is directed to a shoe assembly with a core catcher for retaining a core of an unconsolidated rock or earth formation in a coring barrel. The shoe assembly includes a tube section adapted to fit removably within the core barrel near the coring bit. Two sets of hinged fingers are attached to the inner surface of the tube section on respective circumferential lines which are displaced from each other. The fingers are movable about the hinged ends between an open position in which the fingers do not significantly occlude the passageway, and a closed position in which the fingers do occlude the passageway. The fingers are biased toward the closed position by means of respective springs associated with each finger. When in the closed position, the two sets of fingers together occlude at least 90% of the cross-section of the passageway. The fingers are urged to the open position by the action of a core moving through the coring barrel away from the drilling end.

Abstract: A coring tool comprises a core cutting section and an actuating section disposed thereabove. The core cutting section includes axially telescoping outer and inner barrels. The inner barrel includes a jaw carrier which carries pivotable core-catching jaws normally covered along their radially inner sides by a driver sleeve. When the driver sleeve is raised by the actuator section the jaws are uncovered. Thereafter, the driver sleeve raises the jaw carrier to bring the jaws into contact with a stationary inclined jaw-deflecting surface to force the jaws laterally inwardly through the core. The actuator section relies upon fluid pressure to release for movement a vertically risible member which is mechanically lifted by a drill string to transmit vertical forces to the driver sleeve from a drill string.

Abstract: A soil sample extraction tool including a container having a soil sample receiving chamber, the chamber being accessible by an opening in the container. A first end of the container is engageable with the soil and allows passage of the soil sample to the chamber. A closure member or door is adjustably movable with respect to the opening in the container. A control member is operatively connected to the closure member and allows movement of the closure member with respect to the opening in the container to facilitate opening of the closure member to gain access to the sample receiving chamber.

Abstract: An improved junk basket comprises a tool body having a longitudinally extending passageway therethrough and a magnet assembly disposed in the passageway. A retainer is cooperative between the magnet assembly and the tool body to retain the magnet assembly in a lower position in the passageway and selectively releasable to permit longitudinal movement of the magnet assembly to an upper position in the passageway whereby core cutting apparatus and/or an improved reverse circulation system, also included in the tool, may be employed.