75results about "Drilling rods" patented technology

A hammer drill/driver with a motor having an output member, a planetary transmission, a clutch assembly and a clutch bypass. The planetary transmission, which includes a ring gear, receives rotary power from the output member and produces a rotary output. The clutch assembly has a clutch profile, which is coupled to the ring gear, and a first pin assembly having a first follower, a first pin member and a first spring that biases the first follower into contact with the clutch profile. The clutch bypass has a bypass profile, which is coupled to the ring gear, and second pin assembly having a second follower, a second pin member, a third spring, which biases the second follower away from the bypass profile, and a fourth spring, which biases the second follower away from the second pin member. A method for operation of a hammer drill/driver is also provided.

The disclosure is drawn to methods of drilling wells utilizing blow out prevention components of differing pressure ratings. In the initial drilling phase, a lower pressure rated blow out prevention component is used. In a subsequent drilling phase where a reservoir of a natural resource is penetrated, a higher pressure rated blow out prevention component is used.

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.

The invention discloses a planetary drill bit assembly for balancing the reactive torque of drilling equipment in well drilling and relates to the technical field of drill bits and drilling equipment for oil drilling. The planetary drill bit assembly comprises a planetary structure, a pressure compensating device, and inner and outer drill bits. One end of a drive shaft is connected with an internal drill bit assembly; the middle part of the drive shaft is sleeved with a drive shell; an external drill bit assembly is fixedly arranged outside the drive shell; and a planet bracket tray, a planet bracket and a plurality of planet gears are positioned between the drive shell and the drive shaft. In the invention, the external and internal drill bits are driven by the same drive mechanism to rotate simultaneously and the rotation speed of the external drill bit varies automatically with the change of the drilling speed, so the drill bit can adapt to and eliminate or balance the reactive torque generated by the different drilling speeds in real time. And thus, and the stability and directional control capability of the drill bit are further increased.

A coiled tubing injector system which includes transport trailer components for separate transfer to and from a drilling site. Each component is taken to the site with its own transport tractor, a first component including a coil storage reel and a second component including a tubing injector carried on a mast which is raised from a horizontal transport position, through a stabbing and unstabbing position to a raised working position. When the components are arranged together in an end-to-end with the mast in a stabbing position, a tube gripping member is positioned between the storage reel and tubing injector for controlling the handling of a free end of the stored tubing for stabbing and unstabbing of the tubing injector.

This invention relates to the field of treating subterranean formations to increase production. The method of the current invention is particularly useful in hydrocarbon wells that are long, for example, in excess of one kilometer. The method providing increasing production from a primary wellbore by intersecting this wellbore with a secondary wellbore near to the hydrocarbon production zone such that acid treatment or other treatment can be directed to the intersection.

The invention discloses a coal seam anti-reflection method for circular damage by using cold shock of liquid nitrogen and phase change gas. First, a layer penetrating drill hole is drilled in a roadway to a coal seam through a rock layer; in the layer penetrating drill hole, the coal seam is cut to form multiple cracks perpendicular to the layer penetrating drill hole; a liquid nitrogen injectingpipe and an exhaust pipe extend into the layer penetrating drill hole; and the exhaust pipe is connected with two gas pipelines separately provided with a safety valve and a spherical valve. The spherical valve performs the on-off control over the emission of nitrogen when the liquid nitrogen is injected in the layer penetrating drill hole; after the spherical valve is closed, a threshold of the safety valve is set, so that the safety valve controls the pressure in the layer penetrating drill hole; and after the air pressure in the layer penetrating drill hole exceeds the threshold each time,the safety valve is opened to discharge internal nitrogen for pressure relief, and the safety valve is automatically closed after the pressure relief. The method can guarantee that the liquid nitrogenis quickly and continuously injected in the layer penetrating drill hole, and meanwhile, cracks of coal masses are caused by using cold shock of the liquid nitrogen, the expansion pressure of the phase change gas and the frost heaving pressure of water in the cracks to effectively guarantee the anti-reflection effect.

A drilling machine comprises a power motor unit coupled with a spiral rod and a drill bit shaft and assembled in a mounting frame using a positioning disc. The arbor of power motor mounted on the mounting frame directly drives the drill bit shaft. The spiral rod is disposed at the periphery of drill bit shaft. A plurality of cutters are arranged between the drill bit and spiral rod at the outer perimeter of drill bit with a hollow guide notch above the cutters. The spiral rod is mounted in the positioning disc and engage a plurality of planet gears. When the arbor of power motor turns, it directly drives the drill bit shaft, drives the fast turning of drive gear at the periphery of drill bit shaft, resulting in different turning speeds with the drill bit shaft turning slowly and the spiral rod turning fast.

A system for controlling solids within a wellbore of a well includes a pump positioned within a substantially horizontal portion of the wellbore. A first tubing string is operatively connected between the pump and a surface of the well for removing liquid from the wellbore that is pumped by the pump. A second tubing string may also be operatively connected to the pump and extends downhole of the pump. Either or both of the first and second tubing string includes a longitudinal axis that is offset from an axis of rotation about which the second tubing string is capable of being rotated.

The invention discloses a deep cover layer pipe drilling method comprising the following steps: drill hole formation through one-time pipe drilling is performed by at least two types of drilling tools, an operation hole encircled by lowered pipes is formed, and deep cover layer grouting is performed through the operation hole, wherein pipes of at least two materials are lowered in the period of drill hole formation through one-time pipe drilling by at least two types of drilling tools. Drill hole formation through one-time pipe drilling is realized, repeated drilling is avoided, the efficiency of construction is improved greatly, the occurrence of hole fault is avoided effectively, the occurrence of pipe breakage is reduced effectively, the construction cost is lowered, and smooth completion of a project is ensured.

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.

A method of avoiding the need for a scraper run in drill out operations. The method involves the single step of incorporating a rotary scraper into the downhole drilling motor assembly in such a manner that the rotary scraper rotates with the drill bit and follows the drill bit to scrape debris from interior casing walls.

The spring type Y-shaped well joint includes an oil producing and well testing channel, a well testing channel and an oil pumping electric pump channel forming a Y-shaped structure. In the joint between the oil pumping electric pump channel and the well testing channel, there is one sealing device, which seals the well testing channel while opening the oil pumping electric pump channel when the oil well is in its production state, and seals the oil pumping electric pump channel while opening the well testing channel when the oil well is in its production stopping state. The present invention is superior to available technology, and has simplified operation process.

The invention relates to the technical field of iron roughneck, in particular to automatic pipe string processing equipment which includes a first supporting member, a second supporting member, a toolinstallation mechanism, a turning mechanism, a lifting mechanism, and a rotating mechanism. The tool installation mechanism is connected to the first supporting member through the turning mechanism,and the turning mechanism is used to drive the tool installation mechanism to turn over relative to the first supporting member; the first supporting member is connected to the second supporting member through the lifting mechanism, and the lifting mechanism is used to drive the first supporting member to lift and lower relative to the second supporting member; and the second supporting member isconnected to a target to be installed through the rotating mechanism, and the rotating mechanism is used to drive the second supporting member to rotate relative to the target to be installed. Therefore, the device can realize the adjustment of the turning, lifting, lowering and rotation of the tool installation mechanism, and the tool installation mechanism can move from a standby position to a wellhead, the automation degree is high, the labor intensity is low, no risk exists, and the automatic pipe string processing equipment is safer and more reliable.

A combination blowout preventer and recovery device, comprising a lower part that is placed over a well pipe, and an upper part having a channel and plates to close it. The large end of the valve is placed over a well pipe through which fluid is flowing out. The small end of the valve is connected to the channel. A sleeve connected to the return pipe is placed over the well pipe. Positioning rings are attached to a high pressure pipe, that can fit inside the well pipe. Grinders remove matter from the well pipe. Pistons are attached to each of the plates. The pistons propel the plates across the channel to seal it off and stop the leak. Flanges may limit the pistons' movement. Gears can engage teeth on the pistons to withdraw the plates from the channel, to reopen it and allow the flow of fluid to resume.

The invention provides a separated layer water injection string for petroleum exploitation and a water injection process thereof. The separated layer water injection string for petroleum exploitationcomprises a casing pipe and an oil pipe. A plurality of packers are arranged in the casing pipe in a packer sealing mode from top to bottom in sequence. The top of the oil pipe is connected with a tubing hanger. The bottom of the oil pipe penetrates through all the packers in sequence and is connected with a circular plug. An insertion seal is arranged between the oil pipe and each packer. A hydraulic safety joint is arranged in the position, above each packer, of the oil pipe. A water distributor is arranged in the position, below each packer, of the oil pipe. A circulating sliding sleeve isarranged between the hydraulic safety joint at the upper end of the oil pipe and the tubing hanger. Through the separated layer water injection string for petroleum exploitation, separated layer waterinjection can be realized; after the string gets blocked, casing milling and salvaging measures can be taken; and the problem that the separated layer effective period is shortened due to shaking ofan existing water injection string is solved.

A downhole tool includes a circumferential band having a plurality of axially adjacent weld beads forming a wear resistant surface along a particular axial length of the tool and at least one circumferential multi-layer coating applied axially adjacent the band on either end. The multi-layer coating includes a first layer, exhibiting a first color, applied directly onto the tool surface, and a second wear-resistant layer, exhibiting a second color different from the first color, applied directly onto the first layer. The second layer wears or is removed by a certain amount, such that the first color of the first layer is revealed to indicate the extent of wear and/or that the tool should be removed from service and refurbished by applying a new wear-resistant coating.

The invention relates to the technical field of wire connecting devices, in particular to a wire connecting device for a drilling tool. The wire connecting device comprises a first drill collar, a guide part and a second drill collar, wherein the inner side of the right end of the first drill collar is fixed with the outer side of the left end of the second drill collar, a guide part mounting groove is formed in the wall of the inner cavity of the right portion of the first drill collar, the guide part is fixedly mounted into the guide part mounting groove, and a vertical hole and a horizontal blind hole which are communicated are respectively formed in the upper portion and the right portion of the guide part. The wire connecting device has the advantages that the wire connecting device is reasonable and compact in structure, convenient to use, high in reliability, small in size and widely applicable to the connection of different functional modules of mechatronics drilling tools, the guide-out wire of the exploring tube of the second drill collar can be connected with the guide-out wire of the threading hole of the first drill collar by the coordination of the first drill collar, the guide part, the second drill collar, a rotary plug, a rotary socket and the exploring tube, operation is facilitated, and work efficiency is increased.

The invention discloses an underground plugging device and an under-pressure sucker rod and oil pipe lifting workover operation technology. A sealing convex seat with a sealing surface and a position limiting lug boss are arranged in an oil string; a rod pump is arranged in the part, positioned above the sealed convex seat, in the oil string in a matched way; the sealing surface of a sealing lug boss arranged on the rod pump is matched with the sealing surface of the sealing convex seat arranged in the oil string; an outer oil inlet hole is formed in the part, positioned below the position limiting lug boss, of the pipe wall of the oil string; an inner pipe is arranged in the section of oil string in a matched way; an inner oil inlet hole corresponding to the outer oil inlet hole of the oil string is formed in the pipe wall of the inner pipe; a sealing groove is formed in the part, positioned below the inner oil inlet hole of the inner pipe, of the pipe wall of the inner pipe; a sealing ring matched with the inner wall of the oil string in a matched way is arranged in the sealing groove; the upper end of the inner pipe is connected with the rod pump through a connecting-tripping device; and a pipe orifice formed in the lower end of the oil string is sealed. The structure is simple and reasonable; the performance is reliable; under-pressure sucker rod and oil pipe lifting workover operation can be realized; the underground pressure can be conveniently plugged for many times; and the safe, efficient, environment-friendly and energy-saving production can be realized.