657results about "Borehole drives" patented technology

Shown and described herein is a choke assembly for use with a downhole drill string. The choke assembly may include a rotating choke carrier, a stationary seat disposed on the rotating choke carrier and a rotating choke positioned adjacent to the stationary seat to create a seal surface. The choke assembly may further comprise a biasing mechanism applying a biasing force to press the rotating choke against the stationary seat and a flow port within the stationary seat which controls drilling fluid to allow some drilling fluid to become a bypass fluid and pass through the stationary seat.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an underground non-circular gear intelligent impact tool which comprises a power module, an axial impact module and a circumferential impact module, the power module enables drilling fluid to impact a turbine in a directional mode through a drainage disc, hydraulic energy is converted into mechanical energy, and the mechanical energy is transmitted to the axial impact module. The power is transmitted to the axial impact module and the circumferential impact module, the axial impact module lifts a rack punch hammer to compress a spring through meshing of an incomplete gear and the rack punch hammer, and when the incomplete gear is disengaged from the rack punch hammer, the spring releases energy to generate axial impact downwards. The circumferential impact module is composed of two groups of incomplete gears and racks which are arranged in an up-down 90-degree staggered mode, the rack punch hammer compresses a spring through meshing of the incomplete gears and the rack punch hammer, and the spring is released to generate circumferential impact when the incomplete gears and the rack punch hammer are disengaged. Periodic impact can be achieved, the mechanical rock breaking efficiency is effectively improved, and the stick-slip phenomenon at the drill bit is reduced.

The invention belongs to the field of drilling, and particularly relates to a large-diameter cluster type pneumatic down-the-hole hammer raise-boring reamer bit and a drilling method.The bit comprises a center pipe, a cluster body, an air chamber, a down-the-hole hammer, a synchronous check valve, an air chamber pressure balance control assembly and a concave slag falling channel and is used for transmitting torque and rotating speed and conveying high-pressure air; the top of the central pipe is sleeved with a flange used for being connected with a drill rod, the central pipe is sequentially sleeved with a front guide wing plate, an upper fixing plate, a middle plate, a high-frequency rear seat, an air chamber peripheral cylinder and an air chamber lower cover plate in the extending direction of the central pipe, and the front guide wing plate, the upper fixing plate, the middle plate, the high-frequency rear seat, the air chamber lower cover plate and the central pipe jointly form a cluster body; two ends of the air chamber peripheral cylinder are respectively connected with the high-frequency rear seat and the air chamber lower cover plate to form an air chamber; according to the drill bit, the multiple down-the-hole hammers are integrated through the cluster body, efficient rock breaking and continuous slag discharging are achieved in combination with air chamber energy gathering, synchronous check valve control and a concave slag falling channel, and the drilling efficiency is improved by more than 10 times.

The invention belongs to the technical field of slope construction, and particularly relates to a down-the-hole drill and a vertical blast hole blasting high and steep slope construction method. The method comprises the following steps: S1, firstly designing and arranging holes, firstly determining a blasting area, then determining a chassis resistance line, then determining the row pitch of the holes, and calculating the drill hole spacing and the row pitch according to the drill hole diameter and the blast hole density coefficient; s7, carrying out quality acceptance; when a drilling machine is used for drilling vertical deep holes with different depths, a slope surface is subjected to blasting and layered excavation to a slope bottom line, vertical downward excavation is firstly performed to a slope toe, then the slope is brushed to the slope toe along a slope top line, a breaking hammer is used for trimming a local under-excavation part, and finally a permanent slope is formed. The slope engineering standardization work of a project is greatly improved, the over-excavation and under-excavation phenomena are reduced, and powerful support is provided for permanent slope formation.

The invention relates to a composite percussion drilling speed increasing tool, and belongs to the technical field of drilling tools. The reciprocating hammering unit comprises a hammer body and an impact hammer, the hammer body is axially and slidably connected into the sleeve, the impact hammer is rotatably connected into the hammer body, a reversing sleeve is rotatably connected into the impact hammer, a reversing cabin is arranged on the reversing sleeve, and a reversing runner hole is formed in the hammer body; the flow channel switch unit comprises a baffle ring arranged on the surface of the hammer body and a transmission mechanism connected between the sleeve and the baffle ring, and the transmission mechanism is used for converting axial motion of the baffle ring into rotary motion so as to open or close the reversing flow channel hole. When the drilling tool is lifted, the axial movement of the baffle ring can be converted into rotary movement, so that the baffle ring rotates relative to the hammer body while axially displacing along with the hammer body, a reversing flow channel hole is shielded, and high-pressure drilling fluid cannot flow into a reversing cabin, so that high-frequency composite impact is stopped, vibration and abrasion caused by idling are avoided, and the service life of the drilling tool is prolonged. And the service life and the safety of the tool are improved.

A milling bit is disclosed for debris collection within a wellbore. A check valve can be part of a debris removal tool that includes a motor, a pump, a gearbox, a bailer, the milling bit, and rotational shafts. In an example, on its uphole end, the milling bit can be coupled with the check valve. On its downhole end, the milling bit can be configured for debris removal with cutting edges. The downhole end can also include openings that provide access to an internal cavity of the milling bit. The internal cavity can extend the entire length of the milling bit. This allows the pump to pull drilling fluid into the bailers through the milling bit and check valve. As a result, the debris removal tool can simultaneously remove obstructions in a wellbore and collect debris from the obstruction removal.

A mechanical service tool that may include one or more anchors, a cutter, a communication and control system, and one or more sensors, as well as methods for operating the mechanical service tool, are provided. The one or more anchors may extend radially from the mechanical service tool and the cutter may move relative to the mechanical service tool. The cutter may include a drilling bit. The communication and control system may obtain remote commands that control the cutter, the one or more anchors, or both. The one or more sensors may detect operational conditions of the mechanical service tool and may be operatively coupled to the communication and control system.

The invention discloses a coal rock drilling operation state while-drilling monitoring system and method. The system is characterized in that a pressure and flow sensor I is mounted on a circulating hydraulic pipeline of a feeding oil cylinder; a pressure and flow sensor II is mounted on a circulating hydraulic pipeline of the hydraulic rotary motor; a displacement sensor is mounted on the feeding oil cylinder; the video collector is mounted above a coal wall of a construction roadway; the data acquisition and processing module is connected with each sensor; the video analysis module is connected with the video collector; the state determination module is connected with the data acquisition and processing module and the video analysis module. The method comprises the following steps: acquiring a multi-source drilling state signal and working image data; preprocessing the data; respectively acquiring state classification feature information and drill rod operation state image data, and inputting the state classification feature information and the drill rod operation state image data into a double-flow neural network to extract feature vectors; vector splicing is carried out through a Softmax gating fusion mechanism, and then a judgment result is output through a Softmax classifier. According to the method, the running state of the coal rock drilling can be efficiently and accurately judged.

The invention relates to the field of spraying, and particularly discloses a high-pressure rotary-cut type dust catching and spraying device for a down-the-hole drill, which comprises a mobile vehicle body, a lifting assembly is arranged on the mobile vehicle body, a drilling assembly is arranged at the output end of the lifting assembly, and a water supply assembly is arranged on the mobile vehicle body. A communicating assembly communicating with the water supply assembly is arranged on the movable vehicle body, and a capturing assembly used for capturing dust is arranged between the communicating assembly and the drilling assembly. During early drilling, the first-stage spraying assembly and the second-stage spraying assembly can synchronously capture dust, the second-stage spraying assembly has a compensation effect on the first-stage spraying assembly, and dust escape is avoided; and during later drilling, the effect of catching dust in the catching assembly by the second-stage spraying assembly can be achieved, the dust falling effect is achieved, meanwhile, two water curtains are formed, the dust blocking effect is achieved, dust escape is further reduced, and the dust catching effect is greatly improved.

The invention discloses an air distribution and slag guide device for reverse circulation down-the-hole hammer drilling. The air distribution and slag guide device comprises an outer pipe, a slag guide pipe, an air distribution power mechanism, a drill bit and a drilling cutting conveying mechanism. The outer pipe is provided with an air inlet. The slag guide pipe is coaxially arranged in the outer pipe, and an annular gas distribution channel is formed between the slag guide pipe and the outer pipe and communicated with the gas inlet. And the bottom of the slag guide pipe is provided with a slag suction port, and a slag guide channel is formed in the slag guide pipe. The air distribution power mechanism comprises an air supply machine and an air distribution piston, and the piston slides in the annular air distribution channel in a reciprocating mode. The drill bit is connected with the outer pipe and used for crushing rock strata, and an inner shell and the flow guide cover form an annular cavity. The flow guide cover is provided with a gas distribution nozzle, and the spraying direction corresponds to the slag suction opening. And the drilling cutting conveying mechanism is arranged in the slag guide channel, axially extends and is used for conveying the drilling cuttings to the earth surface. The invention aims to solve the problem that rock debris is easy to retain in a slag guide channel in the existing reverse circulation drilling technology.

The invention provides a reverse circulation drilling device with a reaming function and a using method thereof.The reverse circulation drilling device comprises a drill rod, the drill rod is hollow to form a main pipeline, the bottom of the drill rod is sleeved with a composite drill bit, and the composite drill bit comprises at least one down-the-hole hammer and at least one oil pressure hammer; one part of the down-the-hole hammer extends out of the bottom surface of the shell of the composite drill bit; the oil pressure hammer is arranged in the circumferential direction of the shell of the composite drill bit and can stretch out or retract in the radial direction of the shell of the composite drill bit. The reverse circulation drilling device comprises the composite drill bit, the composite drill bit is provided with the oil pressure hammer and the down-the-hole hammer, the oil pressure hammer can be used for reaming, the down-the-hole hammer can be used for drilling, the oil pressure hammer can be withdrawn when not working, follow-up drilling is not affected, and the composite drill bit can achieve reaming and vertical drilling at the same time; in actual construction, time for replacing the drill bit can be saved, construction efficiency is improved, and time and cost are greatly saved.

A system includes an induction motor configured to drive an electric submersible pump (ESP). The induction motor includes a one or more rotors disposed about a rotational axis, and a plurality of bearings disposed about the rotational axis. Each bearing of the plurality of bearings is disposed axially between a pair of rotors of the one or more rotors. The induction motor further includes one or more stators disposed about the one or more rotors.

A unitary wellhead flow block lubricator assembly includes a unitary body and flow passageways that extend through the unitary body. Various openings on the exterior of the unitary body allow flow control devices to be mounted in the flow passageways to control the flow of fluid though the flow passageways. One or more of the control devices could be mountable in two or more orientations that alter the way in which the flow control device controls flow through one or more passageways in the unitary body. One or more choke mechanisms may also be mounted on the unitary body. The choke mechanisms may allow an operator to selectively adjust a flow of fluid through one or more of the passageways in the unitary body.

Configurations for grippers designed for holding and moving armored power cables for downhole well operations are provided. The grippers are designed to ensure a certain amount of compression force can be exerted against the cable without damaging the armor strands, the internal electrical core including power conductors, insulation or the metallic shielding of the same. Improved installation speed and reliability for electrical submersible pumps may be realized through the system and methods disclosed herein. An armored cable matching coiled tubing injector head grippers are installed on the injector head chain and are compressed against the cable creating the necessary frictional force to safely convey the cable and the attached ESP in and out of the well. Another aspect is a set of rollers fitted to the cable guide attached to the injector head to safely guide the cable from and to the cable reel.

This invention relates to a drill head for the use with a microtunneling apparatus (1) for producing a substantially horizontal bore hole (8). The drill head (4) includes a cutter bar (12) that is rotatable within a working zone (13) of the bore (8) which produces swarf which can be extracted from the working zone (13). The drill head (4) includes a pressure adjustment mechanism including a throat member (49) which is adjustable at the distal end of the drill head (4) to adjust the extraction of swarf from the working zone (13).

This invention relates to the field of construction technology, specifically to a method for pre-drilling with a large-diameter down-the-hole hammer in conjunction with vibratory compaction. The method includes: collecting soil samples at different depths at the pre-drilling site using a sampling drill; analyzing the geology at these depths using a soil analyzer; checking the functions and parameters of the large-diameter down-the-hole hammer and auxiliary automatic pre-drilling equipment; and pre-setting the parameters of the automatic pre-drilling equipment based on the geological data from the different depths at the pre-drilling site. During construction, the parameters of the automatic pre-drilling equipment are adjusted according to the actual conditions at the pre-drilling site. This invention uses a motion execution module to input commands to a frequency converter, which in turn controls the actuator to move the pile driver and drive the down-the-hole hammer for auxiliary pre-drilling. This achieves a fully automated construction control system for large-diameter down-the-hole hammer pre-drilling, reducing manpower consumption and improving efficiency.

Method for controlling a compressor (10) which drives a pneumatic tool, with a maximum allowed pressure (p_max) and an associated compressed air consumption (q_max), the method comprising the step of regulating the operating pressure (p_compr) of the compressor (10), said method comprising: - if the operating pressure (p_compr) is lower than p_max minus a value (Z): controlling the compressor (10) such that the flow rate supplied by the compressor (10) is not limited; - if the operating pressure (p_compr) is higher than or equal to p_max: controlling the compressor (10) such that the flow rate supplied by the compressor (10) does not exceed the compressed air consumption (q_max) at p_max; - if the operating pressure (p_compr) is higher than p_max minus the value (Z) and is lower p_max: controlling the compressor (10) such that the operating pressure (p_compr) remains lower than p_max.

An electrical submersible well pump assembly (11) includes an electrical motor (21) for driving a pump (17). A pressure compensating chamber (38) contains a dielectric lubricant (37) in fluid communication with an interior of the motor. A movable pressure compensating element (47) has a first side in contact with the lubricant in the chamber. Movement of the element relative to the chamber causes a change in volume of the chamber. An electrical drive mechanism (59, 61) is connected with and moves the element. A controller (55) senses a pressure difference between the lubricant pressure and the well fluid pressure and operates the drive mechanism in response. The element may be a piston (47), a bellows (71) or telescoping tubes (91, 93).

The invention belongs to the technical field of drilling equipment, and particularly relates to a pneumatic impactor. The invention provides a pneumatic impactor. The pneumatic impactor comprises an outer pipe, a central gas distribution pipe, a piston, an exhaust cylinder and a drill bit, the air inlet end of the central air distribution pipe is fixed to the outer pipe, the piston is of an integrated through structure, the central air distribution pipe is arranged in the outer pipe, the air outlet end of the central air distribution pipe is communicated with one end of the exhaust cylinder, and the piston axially reciprocates in the exhaust cylinder; the piston pushes the drill bit to do axial reciprocating motion. According to the pneumatic impactor, the exhaust cylinder with the bottom hole is arranged, reciprocating motion of the piston is limited in the exhaust cylinder, the problem that the piston is blocked in the high-speed motion process is solved, and the impact performance of the pneumatic impactor is remarkably improved; meanwhile, the piston is arranged in the exhaust cylinder, the problem that when the piston is directly arranged in the outer pipe, the piston is stuck due to deformation of the outer pipe in the using process can be effectively solved, and the service life of the impactor is further prolonged.

The invention discloses a forward and reverse circulation air down-the-hole hammer drilling process which comprises the following steps: a forward circulation down-the-hole hammer construction step: drilling by using a forward circulation down-the-hole hammer, wherein the average time efficiency is 9 meters per hour with the shallow average time efficiency of 100 meters, the displacement of an air compressor in the process is 70 m < 3 >, and the system pressure is 2 MPa; the aging is quickly reduced along with the increase of the well depth, and the displacement of the required compressed air and the system pressure are gradually increased; the method further comprises a reverse circulation down-the-hole hammer construction step, a positive circulation down-the-hole hammer is used for drilling, the average shallow time efficiency of 200 meters is 8.5 meters per hour, the displacement of an air compressor in the process is 70 m < 3 > per hour, and the system pressure is 2 MPa; and after meeting underground water, the time efficiency is suddenly reduced, and the discharge capacity of compressed air and the system pressure are rapidly increased. According to the invention, the successful application of the air drilling well with the diameter of more than phi 400mm in thick limestone, especially in underground water-rich stratums, before this, in the domestic air drilling practice, the drilling depth of the caliber in the similar stratums is not more than 100m.

A technique facilitates efficient well production in relatively low volume applications, e.g. applications after well pressure and volume taper off for a given well. According to an embodiment, use of an electric submersible progressive cavity pump is enabled in harsh, high temperature downhole environments. A pump stator facilitates long-term use in such harsh environments by providing a composite structure having an outer housing and a thermoset resin layer located within the outer housing and secured to the outer housing. The thermoset resin layer is constructed with an internal surface having an internal thread design. Additionally, an elastomeric layer is located within the thermoset resin layer and has a shape which follows the internal thread. In this manner, the elastomeric layer is able to provide an interior surface generally matching the shape of the internal thread of the thermoset resin layer and arranged for interaction with a corresponding pump rotor.

This invention relates to a drill head (4) for use with a microtunneling apparatus (1) to produce swarf in a working zone (13) of a bore. The drill head (4) includes a cutter bar (12) having at least one spray outlet (41) which is adapted to spray fluid towards a radial member (36) of the drill head (4).

The application provides a rotary steering drilling mechanism, which comprises a drill bit, a drill collar with a mud channel, multiple groups of push assembly for adjusting the drilling direction of the drill bit, a on-off valve assembly for leading mud in the mud channel into a designated push assembly, and a detection control assembly for adjusting the communication position of the on-off valve assembly and the push assembly, wherein the drill collar is connected with the drill bit; multiple groups of the push assembly are arranged along the circumference of the drill bit; the on-off valve assembly is located in the drill collar and connected with the drill bit; and the detection control assembly is fixedly installed in the drill collar. The application has the advantages of simple structure, convenient operation, high directional drilling accuracy and the like.

The present invention relates to a closed-loop hydraulic down-the-hole hammer. The hammer comprises an elongate shaft and a piston having a central bore therethrough, the piston slidably mounted for reciprocal movement on the shaft and arranged to impact a percussion bit, wherein forward and rear drive chambers for the piston are disposed between the piston and the shaft and wherein the forward chamber is separated from the rear chamber by an annular shoulder formed internally of the piston bore. The hammer also comprises a control valve to control reciprocation of the piston, wherein the control valve is arranged within the central bore of the piston. The hammer further comprises an outer wear sleeve, wherein the piston is housed within the outer wear sleeve. A supplementary rear drive chamber is disposed internally of the outer wear sleeve. According to another aspect of the invention, the hammer comprises a control valve housing, disposed at least partially within the central bore of the shaft at a forward end of the shaft and arranged to receive the control valve, the control valve housing having a tapered outer surface at a forward portion thereof and an annular flange connected to the shaft and having a tapered inner surface, corresponding in shape to and engageable with the tapered outer surface of the control valve housing, whereby the control valve housing is retained in the shaft by the annular flange. The hammer further comprises engagement means on the control valve housing slidably engageable with complementary engagement means on the shaft to prevent relative rotation therebetween.

The invention provides a special gas box for a multifunctional audio-frequency environment-friendly drilling machine, which comprises a gas outlet end assembly and a gas inlet end assembly, the gas outlet end assembly comprises a gas outlet end mandrel and a gas outlet end mandrel jacket, the gas outlet end mandrel is provided with a through upper central gas passage, and the gas outlet end mandrel jacket is provided with a gas outlet communicated with the upper central gas passage; the air inlet end assembly comprises an air inlet end mandrel and an air inlet end mandrel outer sleeve, a double-wall inner pipe is arranged in the center of the air inlet end mandrel, and the double-wall inner pipe is provided with a lower center air channel and an annular air channel. The air inlet end mandrel outer sleeve is provided with an air inlet communicated with the annular air channel. The top of the air inlet end mandrel is connected with the bottom of the air outlet end mandrel; the air outlet end mandrel outer sleeve and the air inlet end mandrel outer sleeve are connected through a connecting piece. After the air box is installed on the multifunctional audio frequency environment-friendly drilling machine, the reverse circulation down-the-hole hammer can be used on the multifunctional audio frequency environment-friendly drilling machine.

The invention relates to the technical field of mine drilling, in particular to an energy-saving hole collapse prevention drilling tool. Comprising a driving part, a cylinder and a sealing part, the driving part and the sealing part are in threaded connection with the two ends of the cylinder respectively, a gear ring is rotationally connected into the cylinder, an output shaft of the driving part is rotationally connected with a planet carrier and fixedly connected with a sun gear, and the planet carrier is rotationally connected with a planet gear meshed with the gear ring and the sun gear; the planet carrier is provided with a power shaft which is in limiting sealing sliding and rotating connection with the sealing piece, and the power shaft is fixedly connected with a connecting piece used for installing a drill bit. Working modes are automatically switched according to the torque borne by the power bearing, high-speed rotation is adopted in a soft soil layer, the drilling efficiency is improved, and the drill bit abrasion and hole collapse risks are reduced; and the hard rock stratum is converted into low-speed rotation to be combined with axial impact, the rock breaking capacity is enhanced, the drilling speed is maintained, meanwhile, light weight, miniaturization and low-cost manufacturing of equipment are achieved, and therefore the overall mass of the drilling tool is reduced, the number of power sources is reduced, and drilling energy consumption is reduced.

A lubricating system is disclosed. The lubricating system includes: at least one first to-be-lubricated component, wherein an inlet of each of the at least one first to-be-lubricated component is connected with a first lubrication oil inlet pipe, and an outlet of the each of the at least one first to-be-lubricated component is connected with a first lubrication oil outlet pipe; and at least one second to-be-lubricated component, wherein an inlet of each of the second to-be-lubricated component is connected with a second lubrication oil inlet pipe, and an outlet of the each of the at least one second to-be-lubricated component is connected with a second lubrication oil outlet pipe. An operating pressure of the each of the at least one first to-be-lubricated component is different from a working pressure of the each of the at least one second to-be-lubricated component.

A first aspect relates to a downhole apparatus comprising an anchor 113 having a gripping element for engaging a borehole 104 to restrict relative axial and / or rotational movement between the anchor a

This invention discloses a novel combined microwave-drilling device for hard rock, belonging to the field of rock breaking technology. It includes a ground control system and a microwave generator. One end of the ground control system is connected to the microwave generator; a power box is connected to the bottom of the microwave generator, and a rock-breaking motor is installed inside the power box. The drilling tool of this invention consists of a pre-drilling small drill bit and a reaming large drill bit. The pre-drilling small drill bit acts as a pilot tool, drilling a guide hole on the rock surface through high-speed rotation. Simultaneously, it utilizes the local high stress concentration effect of its cutting edge to pre-damage the rock mass surrounding the hole wall, forming a micro-crack network, significantly reducing the integrity and strength of the rock mass. The reaming large drill bit efficiently enlarges the drilling cross-section of the weakened rock mass. Through the synergistic effect of mechanical fracturing and microwave thermal assistance, the drilling cross-section is rapidly enlarged, while reducing energy loss and tool wear during pure mechanical drilling.