30results about "Drill bits" patented technology

The present invention is directed to a rotary mining apparatus. The apparatus includes an elongated housing with a leading end and an opposite trailing end. The apparatus also includes a compression device coupled to the housing. The apparatus further includes a plurality of cables extending along the housing. Each of the cables has an end connected to the compression device. The apparatus also includes a plurality of cutting devices attached to the cables at ends of the cables opposite the ends connected to the compression device. The present invention is also directed to a method of removing subterranean material. The method includes the step of inserting a rotary mining device having radially extendable cutting devices into a subterranean shaft. The method also includes the steps of rotating the mining device such that the cutting devices contact the sides of the shaft and extending the cutting devices into the sides of the shaft.

A cutting device for use with installation of helical ground anchors designed to cut through rock. The invention has carbide steel cutting tips attached to the distal end of a shaft extending below the end in order to make a first cut through rock along the axis of rotation of the shaft. Helically shaped plates are attached to the shaft at a distance above the shaft set of cutting tips. Attached along the outer edge of the helix are additional carbide steel cutting tips that extend below the bottom surface of the helix and cut along the axis of rotation of the shaft. The present invention allows for the installation of helical ground anchor supports at proper depths without deviation, in situations where the path is obstructed by rock or other hard materials.

A vehicle-attached lifting device and tool support is provided. The device comprises a dual-rail frame supported in an upright configuration by the vehicle tow hitch, wherein an internal subassembly support frame is positioned between the rails for the purposes of supporting different lifting and tool support subassemblies. Along the sides of the upright frame is a pair of ground support members that extend downward towards the ground to support the frame during operation, preventing the load from compressing the vehicle suspension or damaging the same. A winch controls the vertical positioning of the support frame within the dual-rail frame, which controls the position of a lifting or tool support subassembly. Many subassemblies are contemplated for use with the present invention for the purposes of assisting a user without requiring manual input therefrom. The device can also adjust with relation to the vehicle using different trailer hitch attachments.

Casing cutter for severing multiple tubulars in a well bore has a pair of cutter blades pivotally mounted on a support body. The blades are pivotally mounted for gradual movement outside of the support body when downward force is applied to proximate ends of the cutter blades. The support body is rotated inside the innermost of the multiple tubulars, while the cutter blades sever the tubulars of progressively increasing diameter. Should the cutter blades or pivotal connections become unusable, the tool body can be rotated about the vertical axis and secured to a downhole string by the opposite end. A substitute pair of cutter blades are then engaged on the tool body and operated to cut the casings similar to the first set of the cutter blades.

A helical displacement well with preassembled segments includes a preassembled shaft-forming penetrator tube including helical plates mounted to its exterior that may be rotated to propel the casing into the ground. A hydraulic drill motor rotates the penetrator tube and as it moves deeper into the ground. Extension tubes may be added to and coupled to the penetrator tube. A hydraulic drill motor is attached to the upper end of the extension tubes in order to continue the rotation of the assembled helical displacement well. The filter screen and the piping are installed concurrently with the addition of the extension tubes at the surface of the ground.

A method for forming a coating upon a wellbore tool includes forming a pattern of features supported by a body and forming a coating over the pattern of features. Forming the pattern of features includes forming a first feature and forming a second feature spaced from the first feature by a first width at a first elevation and by a second width at a second elevation, the second width being different than the first width, and the first elevation being further from an interior region of the body than the second elevation. Also disclosed is a wellbore tool comprising a coating covering a pattern of features and a method of utilizing a wellbore tool in a subterranean formation, the method including forming a pattern of features, forming a coating over the pattern, and disposing the wellbore tool in a borehole.

The invention relates to a diameter variable double high-pressure stir-spray pile and a diameter variable method thereof. The diameter variable double high-pressure stir-spray pile and a diameter variable method thereof are used for carrying out corresponding structural improvement on a drill bit and stirring blades of the drill bit, and the diameter variation of the drill bit is realized througha sleeve pipe and an elastic connecting rod structure so as to realize on-site adjustment of the radius of a formed pile without disassembling and replacing the drill bit. On the basis of improving the operation efficiency and shortening the adjustment of diameter variation, the stability of the drill bit and a drill pipe connection structure is ensured. The diameter variable double high-pressurestir-spray pile comprises a drill pipe and the drill bit connected to the end of the drill pipe; a high-pressure gas pipe and a high-pressure cement slurry pipe communicate with the inner parts of thedrill pipe and the drill bit; at least two layers of stirring blades are arranged on the periphery of the drill bit, and air outlet holes and/or slurry outlet holes are formed below each layer of stirring blades; the drill bit is provided with an outer sleeve pipe connected with the drill pipe, and an end head is connected to the end of the outer sleeve pipe; the stirring blades are provided withhinged connecting rods and diameter variable rods; and the ends of the diameter variable rods are fixedly connected with the outer sleeve pipe, and a vertical transmission mechanism inside the outersleeve pipe is movably connected to the ends of the connecting rods.

The invention discloses a diamond drill bit suitable for hard stratum drilling, and belongs to the field of drilling. The drill bit comprises a drill bit body, a plurality of blades which extend fromthe drill bit body or are fixed to the drill bit body, water holes or nozzles. The blades are provided with scraping cutting teeth. At least one blade extends to form a strengthening base at the circumferential position of the drill bit, wherein the strengthening bases are provided with scraping cutting teeth. According to the technology, local strengthening of a cutting structure can be achieved,the hard stratum drilling work life is prolonged, and meanwhile premature failures of the cutting teeth due to vibration in the drill bit hard stratum drilling process can be reduced.

A DHD hammer that can exhaust working air volumes partially through a proximal end of the DHD hammer's actuator assembly includes a drive chamber, a return chamber, and a backhead that includes exhaust ports. Working air volumes from the drive chamber are exhausted through the backhead while working air volumes from the drive chamber are exhausted primarily through a drill bit.

The invention discloses a device for quickly drilling in frozen earth and a construction method of the device. The device and the method aim to increase drilling speed. The device for quickly drilling in the frozen earth comprises a drill pipe and a drill bit. A through nitrogen conveying hole is formed in the drill pipe and the drill bit, the drill bit is provided with a liquid nitrogen outlet, the rear end of the drill pipe is connected with a liquid supply pipe, and the liquid supply pipe is connected with a liquid nitrogen storage tank. The invention further discloses the construction method for quick drilling in the frozen earth. The method includes the following steps that the drill pipe extends into a drilled hole frozen in advance; liquid nitrogen in the liquid nitrogen storage tank is input into the drill bit fixed at the bottom of the drill pipe through the liquid supply pipe, and the drill bit is precooled; after precooling, a drilling machine is started, the drilling machine drives the drill pipe to rotate and impact, and the drill pipe drives the drill bit fixed at the bottom of the drill pipe to rotate to drill; in the drilling process, the liquid nitrogen in the liquid nitrogen storage tank flows out from the liquid nitrogen outlet of the drill bit after passing the liquid supply pipe, the nitrogen conveying hole in the drill pipe and an internal channel of the drill bit. The device and the method are suitable for drilling through the drill bit in frozen holes.

The invention discloses a drilling tool of a rotary drilling rig. The drilling tool comprises a top plate (1) and a connecting block (2) connected with the top plate (1); the top plate (1) is connected with a first cylinder (3), a boring mud inlet (31) is formed in the first cylinder (3), and an openable bottom plate (4) is connected onto a bottom wall of the first cylinder (3); the top plate (1) is further connected with a second cylinder (5) sleeved outside the periphery of the first cylinder (1), the diameter of the second cylinder (5) is more than that of the first cylinder (3), and the bottom of the second cylinder (5) is provided with first drilling teeth (51); and the axial length of the first cylinder (3) is more than that of the second cylinder (5). For the structural design of the drilling tool, on the premise of the ensuring the drilling efficiency, the drilling tool integrates the functions of loop drilling and boring mud salvaging into a whole, so that the construction efficiency can be obviously increased finally. In addition, the invention further discloses a rotary drilling rig comprising the drilling tool.

The invention discloses a hole-flushing method for a gas extraction drilled hole under a coal mine. A hole-flushing device composed of a water tank, a high-pressure pump, a high-pressure hard pipe, a high-pressure hose, a self-propelled drill bit, a base, a winch and a pushing mechanism is adopted for crashing and flushing blocked and collapsed parts of the gas extraction drilled hole which blockage and collapse occur on under the coal mine through the rock-breaking capacity of self-propelled water jet, and the drilled hole is dredged and reamed; traction force provided by the self-propelled drill bit is utilized for moving the high-pressure hose forwards in a straightening mode; the characteristics that the resin pipe has certain rigidity and can transmit pushing force are utilized for moving the self-propelled drill bit forwards within a larger range. The hole-flushing method mainly has the effects of dredging and reaming the blocked and collapsed drilled hole under the coal mine so as to improve gas extraction efficiency. Compared with the prior art, the hole-flushing method has the advantages of being convenient to operate, capable of improving hole-flushing efficiency and the like and is mainly suitable for dredging the blocked extraction drilled hole in the process of gas extraction on a soft coal bed.

A method of making a drill bit for drilling subterranean formations includes forming a first blade having a shape and configuration defined by one or more first parameters and forming a second blade having a shape and configuration defined by one or more second parameters. One of the first parameters is different than one of the second parameters.

The invention discloses a cross drill bit, which comprises a chuck and a barrel-shape connection part, wherein the chuck is located at the upper end of the barrel-shape connection part; the chuck is provided with a cross tool bit in cross distribution; the center of the cross tool bit is provided with a rotating shaft mounting hole; the side wall of the barrel-shape connecting part is provided with a cuttings chute; and the side wall of the cross tool bit is provided with a cooling liquid discharge hole. The cross drill bit provided by the invention has the advantages of simple and compact structure, high mining efficiency, and long service life.

The invention discloses a diamond composite sheet and a preparation method thereof. The method comprises the following steps: plating a layer of metal cobalt on the surface of diamond micro-powder inadvance to obtain the diamond micro-powder with the metal cobalt plated on the surface; filling a metal cup or a carbon mould with the diamond micro-powder with the metal cobalt plated on the surfaceand a hard alloy substrate, and performing vacuum treatment on an assembled component; and filling a sintering mould with the component which is subjected to the vacuum treatment, and sintering to thediamond composite sheet. According to the diamond composite sheet and the preparation method thereof, the problems that the strength, the impact resistance, the toughness and the wear resistance of the diamond composite sheet of the diamond composite sheet are not high because the metal cobalt is distributed unevenly in the existing diamond composite sheet are solved.

Disclosed is a diamond composite tooth, which comprises a cemented carbide body (1) and a diamond composite layer (2), wherein the diamond composite layer (2) is sintered so as to attach to an upper side face (11) and top face (12) of the cemented carbide body (1); the thickness of the diamond composite layer (2) at the top face (12) of the cemented carbide body (1) is more than the thickness of the diamond composite layer (2) at the upper side face (11). The present invention has the advantages of a simple and compact structure, low cost, and the ability to solve the problem of regions where stress is concentrated, thus effectively extending the service life thereof.

The invention discloses a rotary steerable drilling tool. The rotary steerable drilling tool comprises a screw rod, a rotary steerable drilling tool body, a connecting rod, a drill bit and a control module. a first driving motor is connected to one end of the screw rod, and one end of the rotary steerable drilling tool body is connected with the other end of the screw rod; one end of the connecting rod is connected with the other end of the rotary steerable drilling tool body; the drill bit is arranged at the other end of the connecting rod through a universal joint, wherein a groove extendingtowards the inside of the connecting rod is formed in one end of the connecting rod, and a transmission part is arranged at the other end of the rotary steerable drilling tool body; the transmissionpart is positioned in the groove, the transmission part comprises a second driving motor arranged at the other end of the rotary steerable drilling tool body and a rotating part arranged on an outputshaft of the second driving motor, and the rotating part is fixedly connected with the inner wall of the groove; and the control module includes a rotating speed sensor and a controller. The rotary steerable drilling tool is reasonable in design, simple in structure and low in cost, and has extremely high popularization value.

The invention discloses a PDC drill bit capable of achieving casing drilling and a design method thereof, and belongs to the technical field of oil drilling. At least six isolation units are arranged on a blade gauge protection part of the PDC drill bit; during arrangement, the isolation units are divided into at least two groups, the isolation units in each group are arranged on the blade gauge protection part in the same circumferential direction, and a virtual plane is defined by the isolation units in each group; and the virtual planes are connected with intersecting lines between casing well walls to form a virtual contact surface, and when the PDC drill bit drills, the virtual contact surface makes contact with the casing well walls, so that the purposes that a drill plug and a drill casing accessory are arranged, a casing is not damaged, and comprehensive drilling can still be continued after the casing is taken out are achieved.

The invention provides a drill bit for engineering geological drilling. The drill bit comprises a drill pipe, a drill handle and a drill bit separately fixed to opposite two ends of the drill pipe. The drill bit is of a cone-shaped structure, reinforcing blocks are distributed and fixed to the outer surface of the drill bit, the drill pipe is formed by butt jointing a first drill pipe and a seconddrill pipe, and a reinforcing layer is fixed to the periphery of the connection of the first drill pipe and the second drill pipe. The drill bit for engineering geological drilling is upgraded and improved to overcome existing problems and defects. The drill bit for engineering geological drilling belongs to the technical field of engineering geology.

A reamer includes a plurality of cutter pocket holders. The cutter pocket holders are separately manufactured and connected to a body of the reamer. The cutter pocket holders include a plurality of cutter pockets, into which cutting elements may be inserted. A radially rearward cutter pocket holder may include front-loading cutter pockets. Attachable cutter pockets may help to improve inventory management and decrease manufacturing costs of the reamer block.

A drill head has a domed leading face and carries cutting teeth. A tubular drill string can be used to drive the head into the ground. An off-center aperture communicates with the bore of the string, by means of a connecting passage, which defines an oblique cone. During drilling, a flushing medium can be pumped down the bore and out through the aperture. As the drill string and head are withdrawn, an elongate member can be introduced down the bore, out through the aperture, to be left in the passage drilled by the head. The form of the mouths and connecting passage avoid the elongate member encountering any discontinuities which would prevent it leaving the head. The elongate member could be reinforcing bar for a cast-in-situ pile, or part of a ground loop for a ground heat energy system.