• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Disclosed are drilling equipment capable of reinforcing a wall of a well and a use method thereof. In a mode that an internal drill pipe is combined with an external sleeve, rocks excavated by a bottom drill bit enter a drill collar via a gap between an internal disc and an external disc through rocks cut by cutting edges, the rocks are spirally conveyed into the internal drill pipe upward through a conveying blade after being cut by a cutting blade again, and as the rocks are conveyed upward continuously, the rocks in the internal drill pipe are accumulated continuously. Finally, the rocks are discharged through a lifting mechanism. When the bottom drill bit reaches a target layer, the internal drill pipe is pulled away and the external sleeve is left to support the wall of the well, such that a conventional drilling mode of excavating and reinforcing the wall of the well successively is abandoned and the wall of the well is reinforced while excavation is performed, and therefore, the stability of the wall of the well is enhanced effectively. The use method of the drilling equipment is simple in step and easy to operate and improves the drilling speed and the drilling quality.
    公开号:NL2028151A
    申请号:NL2028151
    申请日:2021-05-05
    公开日:2021-09-28
    发明作者:Zhang Shujuan；Zhao Xiangqian；Liang Yanxiang；Chen Dingchao；Yu Yang；Han Yuheng；Pan Yuxin
    申请人:Univ Xuzhou Technology；
    IPC主号:
    专利说明:

    DRILLING EQUIPMENT CAPABLE OF REINFORCING WALL OF WELL ANDUSE METHOD THEREOF
    TECHNICAL FIELD The invention relates to drilling equipment, in particular to drilling equipment capable of reinforcing a wall of a well and a use method thereof, and belongs to the technical field of petroleum drilling equipment.
    BACKGROUND A stable borehole problem is a problem frequently encountered in a petroleum drilling process. With continuous development of exploration and development field, formation conditions are complex increasingly, and the problem that the wall of the well is more prominent, which affects the drilling speed and the drilling quality severely.
    In the prior art, reinforcement of the wall of a drilled well usually comprises excavating the drilled well, then running a casing, and then injecting cement paste to the periphery of the casing, which plays a role of protecting the wall of the well. However, as far as some complex formations, rock masses around have been crushed when a drill bit is fed. After the drill bit ascends and the casing is transferred down, the wall of the well is unstable and collapses, which cannot play a role of reinforcing the wall of the well.
    SUMMARY In order to solve the problems in the prior art, the invention provides drilling equipment capable of reinforcing the wall of the well and the use method thereof, wherein the wall of the well can be reinforced while excavating, and therefore, the stability of the wall of the well is enhanced effectively. The use method of the drilling equipment is simple in step and easy to operate, and the drilling speed and the drilling quality are improved favorably.
    In order to achieve the purpose, a technical scheme of the present invention is as follows: drilling equipment capable of reinforcing a wall of a well includes a bottom drill bit, a lower drill collar, a middle drill pipe and an upper derrick, wherein the drill bit includes a disc-shaped main body, a plurality of cutting edges are circumferentially and uniformly distributed along the disc-shaped main body, one ends of the cutting edges are fixed to a center of the disc-shaped main body and the other ends of the cutting edges extend out of a plane where the disc-shaped main body is; a chip removal opening is formed in the disc-shaped main body between adjacent cutting edges, and the chip removal opening is a through hole which penetrates through an upper end surface and a lower end surface of the disc-shaped main body; the drill collar is connected to the bottom drill bit through a drilling plate, the drilling plate comprises an internal disc and an external disc, the internal disc and the external disc are middle hollowed circular rings, the internal disc is located at the center of the external disc, and the internal disc and the external disc are connected through a connecting plate; and a lower end surface of the external disc is connected to the bottom drill bit; the drill collar is a hollow sleeve, a spiral rotating rod is arranged in an inner cavity of the drill collar, the spiral rotating rod comprises a rotating shaft vertically arranged along a length direction of the sleeve, a conveying blade spirally arranged outside the rotating shaft in a sleeving manner and a cutting blade, the cutting blade is circumferentially connected to an outer wall of the rotating shaft, and a connection is located between a lower side of the conveying blade and the lower end of the rotating shaft; the lower end of the rotating shaft is inserted into the internal disc; and a lower end surface of the sleeve is connected to an upper end surface of the external disc; the drill pipe is connected to the upper end of the drill collar through a fastening ring, the drill pipe and the drill collar are arranged coaxially, and a diameter of the drill pipe is not greater than the diameter of the drill collar; an upper threaded section and a lower threaded section are arranged on an inner wall of the fastening ring, the lower threaded section is connected to a threaded section formed in an outer wall of the upper end of the drill collar, and the upper threaded section is connected to a threaded section arranged on an outer wall of the lower end of the drill pipe; the drill pipe comprises an external sleeve hollow inside and an internal drill pipe arranged in the hollow cavity of the external sleeve along a length direction, the internal drill pipe is a hollow internal rock channel, and the internal drill pipe is connected to the external sleeve through a connecting mechanism; and a filter screen is arranged in the bottom of the cavity between the internal drill pipe and the external sleeve; the derrick is located above the middle drill pipe and includes a derrick main body and a plurality of mounting tables arranged in the main body, a hook is mounted on the upper mounting table, a rotating disc is mounted on the lower mounting table, the rotating disc comprises a rotating disc main body, a bearing is mounted in the middle portion of the rotating disc main body, and a square hole matched with a square drill pipe is formed in the center of the bearing; the upper end of the square drill pipe is connected to the hook through a lifting connector, the lower end of the square drill pipe, penetrating through the square hole, is connected to the upper end of the lifting mechanism, and the lower end of the lifting mechanism is connected to the internal drill pipe; and the lifting mechanism is a hollow column casing, a threaded section matched with the threaded section at the lower end of the outer wall of the square drill pipe is arranged at the upper end of the inner wall of the lifting mechanism, and a threaded section matched with the threaded section at the upper end of the inner wall of the internal drill pipe is arranged at the lower end of the outer wall of the lifting mechanism; and a wall of the hollow column casing is filled with through holes.
    Further, the connecting mechanism includes first assembling slots and second assembling slots formed in the upper end and the lower end of an inner wall of the external sleeve separately; by taking a center axis of the external sleeve as an axis of symmetry, at least one pair of first assembling slots and second assembling slots is formed; each first assembling slot includes a pair of limiting blocks | arranged oppositely, and the limiting blocks | are arranged vertical to the inner wall of the external sleeve; each second assembling slot includes a pair of limiting blocks ll and a connecting block arranged oppositely, one ends of the pair of limiting blocks Il are arranged vertical to the inner wall of the external sleeve and the opposite other ends are connected by the connecting block; first assembling blocks and second assembling blocks corresponding to the first assembling slots and the second assembling slots are arranged at the upper end and the lower end of the outer wall of the internal drill pipe, separately, the first assembling blocks are matched with the first assembling slots in shape and dimension and are clamped in the first assembling slots, and the second assembling blocks are in reversed L shapes, horizontal arms of the second assembling blocks are connected to the outer wall of the internal drill pipe, vertical arms of the second assembling blocks are matched with the second assembling slots in shape and dimension and are clamped in the second assembling slots to form a hook fit structure therewith.
    Further, the number of the cutting edges is four and the number of the connecting plates is four.
    A use method of the drilling equipment capable of reinforcing the wall of the well includes the following steps of: 1) Operation before drilling: mounting the bottom drill bit, the lower drill collar, the middle drill pipe and the upper derrick;
    2) Drilling down: injecting a drilling fluid downward through the internal drill pipe and the drill collar, starting the rotating disc to enable the rotating disc to rotate, wherein the rotating disc drives the square drill pipe to rotate, the square drill pipe drives the middle drill pipe to rotate, the middle drill pipe drives the drill collar to rotate, the drill collar drives the bottom drill bit to rotate and the bottom drill bit drives the spiral rotating rod in the drill collar to rotate; in a process of drilling deeply underground from a surface of a stratum, feeding the rocks cut by the cutting edges into the drill collar through the gap between the internal disc and the external disc, conveying the rocks cut by the cutting blades spirally upward into the internal drill pipe through the conveying blade, wherein as the rocks are conveyed upward continuously, the rocks in the internal drill pipe are accumulated continuously, and finally, the rocks are discharged through the lifting mechanism;
    3) Connecting a single drill pipe: when the length of the middle drill pipe is insufficient relative to the drilling depth, detaching the connection between the lower end of the lifting mechanism and the drill pipe at the uppermost end, connecting a drill pipe above the drill pipe at the uppermost end, keeping all drill pipes up and down be coaxially connected, and meanwhile, elongating a hook connector, connecting the lifting mechanism to the drill pipe at the uppermost end again, and performing a drilling operation downward continuously;
    4) Repeating the step 3), pulling away the internal drill pipe from the external sleeve after drilling a depth of a drill collar downward till the bottom drill bit arrives at the target layer, and reserving the external sleeve to support the wall of the well; and
    5) Grouting: injecting cement slurry to the periphery of the external sleeve.
    Compared with the prior art, in a mode that an internal drill pipe is combined with an external sleeve, rocks excavated by a bottom drill bit enter a drill collar via a gap between an internal disc and an external disc through rocks cut by cutting edges, the rocks are spirally conveyed into the internal drill pipe upward through a conveying blade after being cut by a cutting blade again, and as the rocks are conveyed upward continuously, the rocks in the internal drill pipe are accumulated continuously.
    Finally, the rocks are discharged through a lifting mechanism.
    When the bottom drill bit reaches a target layer, the internal drill pipe is pulled away and the external sleeve is left to support the wall of the well by removing a connecting plate between the internal drill pipe and the external sleeve, such that a conventional drilling mode of excavating and reinforcing the wall of the well successively is abandoned and the wall of the well is reinforced while excavation is performed, and therefore, the stability 5 of the wall of the well is enhanced effectively. The use method of the drilling equipment is simple in step and easy to operate and improves the drilling speed and the drilling quality.
    BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural schematic diagram of the present invention; Fig. 2 is a structural schematic diagram of matching the drill collar with the drill pipe in the present invention; Fig. 3 is a structural schematic diagram of the drill bit in the present invention; Fig. 4 is a sectional structural schematic diagram of the drill pipe in the present invention; Fig. 5 is a structural schematic diagram of the external sleeve portion of the connecting mechanism in the present invention; Fig. 6 is a structural schematic diagram of the internal drill pipe portion of the connecting mechanism in the present invention; Fig. 7 is a structural schematic diagram of matching the square drill pipe with the rotating disc of the present invention; Fig. 8 is a structural schematic diagram of the rotating disc of the present invention; Fig. 9 is a structural schematic diagram of the drilling plate of the present invention.
    In the drawings, 1, drill bit, 101, disc-shaped main body, 102, cutting edge, 103, chip removal opening; 2, drill collar, 201, spiral rotating rod, 201-1, rotating shaft, 201-2, conveying blade, 201-3, cutting blade; 3, drill pipe, 301, internal drill pipe, 302, external sleeve, 303, connecting mechanism, 303-1, first assembling slot, 303-2, second assembling slot, 303-1-1, limiting block 1, 303-2-1, limiting block li, 303-2-2, connecting block, 303-3, first assembling block, 303-4, second assembling block, 304, filter screen;
    4, derrick, 401, derrick main body, 402, mounting table, 403, hook, 404, rotating disc, 404-1, rotating disc main body, 404-2, bearing, 405, square drill pipe, 406, square hole; 5, drilling plate, 501, internal disc, 502, external disc, 503, connecting plate; 6, fastening ring; 7, lifting mechanism, 701, through hole.
    DETAILED DESCRIPTION Further description of the present invention will be made below in combination with drawings. As shown in the Fig. 1 to Fig. 4, the drilling equipment capable of reinforcing the wall of the well includes a bottom drill bit 1, a lower drill collar 2, a middle drill pipe 3 and an upper derrick 4, wherein the drill bit 1 includes a disc-shaped main body 101, a plurality of cutting edges 102 are circumferentially and uniformly distributed along the disc-shaped main body 101, one ends of the cutting edges 102 are fixed to a center of the disc-shaped main body 101 and the other ends of the cutting edges 102 extend out of a plane where the disc-shaped main body 101 is; a chip removal opening 103 is formed in the disc-shaped main body 101 between adjacent cutting edges 102, and the chip removal opening 103 is a through hole which penetrates through an upper end surface and a lower end surface of the disc-shaped main body 101; as shown in the Fig. 2 and Fig. 9, the drill collar 2 is connected to the drill bit 1 through a drilling plate 5, the drilling plate 5 includes an internal disc 501 and an external disc 502, the internal disc 501 and the external disc 502 are middie hollowed circular rings, the internal disc 501 is located at the center of the external disc 502, and the internal disc 501 and the external disc 502 are connected through a connecting plate 503; and a lower end surface of the external disc 502 is connected to the drill bit 1; as shown in the Fig. 1 to Fig. 4, the drill collar 2 is a hollow sleeve, a spiral rotating rod 201 is arranged in an inner cavity of the drill collar, the spiral rotating rod 201 includes a rotating shaft 201-1 vertically arranged along a length direction of the sleeve, a conveying blade 201-2 spirally arranged outside the rotating shaft 201-1 in a sleeving manner and a cutting blade 201-3, the cutting blade 201-3 is circumferentially connected to an outer wall of the rotating shaft 201-1, and a connection is located between a lower side of the conveying blade 201-2 and the lower end of the rotating shaft 201-1; the lower end of the rotating shaft 201-1 is inserted into the internal disc 501; and a lower end surface of the sleeve is connected to an upper end surface of the external disc 502; the drill pipe 3 is connected to the upper end of the drill collar 2 through a fastening ring 6, the drill pipe 3 and the drill collar 2 are arranged coaxially, and a diameter of the drill pipe 3 is not greater than the diameter of the drill collar 2; an upper threaded section and a lower threaded section are arranged on an inner wall of the fastening ring 6, the lower threaded section is connected to a threaded section formed in an outer wall of the upper end of the drill collar, and the upper threaded section is connected to a threaded section arranged on an outer wall of the lower end of the drill pipe 3; the drill pipe 3 includes an external sleeve 302 hollow inside and an internal drill pipe 301 arranged in the hollow cavity of the external sleeve 302 along a length direction, the internal drill pipe 301 is a hollow internal rock channel, and the internal drill pipe 301 is connected to the external sleeve 302 through a connecting mechanism 303; and a filter screen 304 is arranged inthe bottom of the cavity between the internal drill pipe 301 and the external sleeve 302; as shown in the Fig. 1, Fig. 7 and Fig. 8, the derrick 4 is located above the drill pipe 3 and includes a derrick main body 401 and a plurality of mounting tables 402 arranged in the main body, a hook 403 is mounted on the upper mounting table, a rotating disc 404 is mounted on the lower mounting table, the rotating disc 404 includes a rotating disc main body 404-1, a bearing 404-2 is mounted in the middle portion of the rotating disc main body 404-1, and a square hole 406 matched with a square drill pipe 405 is formed in the center of the bearing; the upper end of the square drill pipe 405 is connected to the hook 403 through a lifting connector, the lower end of the square drill pipe, penetrating through the square hole 406, is connected to the upper end of the lifting mechanism 7, and the lower end of the lifting mechanism 7 is connected to the internal drill pipe 301; and the lifting mechanism 7 is a hollow column casing, a threaded section matched with the threaded section at the lower end of the outer wall of the square drill pipe 4- 5 is arranged at the upper end of the inner wall of the lifting mechanism, and a threaded section matched with the threaded section at the upper end of the inner wall of the internal drill pipe 3-1 is arranged at the lower end of the outer wall of the lifting mechanism; and a wall of the hollow column casing is filled with through holes
    701.
    Preferably, as shown in the Fig. 5 and Fig. 6, the connecting mechanism 303 includes first assembling slots 303-1 and second assembling slots 303-2 formed in the upper end and the lower end of an inner wall of the external sleeve 302 separately; by taking a center axis of the external sleeve 302 as an axis of symmetry, atleast one pair of first assembling slots 303-1 and second assembling slots 303-2 is formed; each first assembling slot 303-1 includes a pair of limiting blocks | 303-1- 1 arranged oppositely, and the limiting blocks | 303-1-1 are arranged vertical to the inner wall of the external sleeve 302; each second assembling slot 303-2 includes a pair of limiting blocks Il 303-2-1 and a connecting block 303-2-2 arranged oppositely, one ends of the pair of limiting blocks II 303-2-1 are arranged vertical to the inner wall of the external sleeve 302 and the opposite other ends are connected by the connecting block 303-2; first assembling blocks 303-3 and second assembling blocks 303-4 corresponding to the first assembling slots 303-1 and the second assembling slots 303-2 are arranged at the upper end and the lower end of the outer wall of the internal drill pipe 301, separately, the first assembling blocks 303-3 are matched with the first assembling slots 303-1 in shape and dimension and are clamped in the first assembling slots 303-1, and the second assembling blocks 303-4 are in reversed L shapes, horizontal arms of the second assembling blocks 303-4 are connected to the outer wall of the internal drill pipe 301, vertical arms of the second assembling blocks 303-4 are matched with the second assembling slots 303-2 in shape and dimension and are clamped in the second assembling slots 303-2 to form a hook fit structure therewith.
    Preferably, as shown in the Fig. 3 and Fig. 4, the number of the cutting edges 102 is four and the number of the connecting plates 503 is four, and the cutting edges 102 and the connecting plates 503 are circumferentially and uniformly distributed.
    A use method of the drilling equipment capable of reinforcing the wall of the well includes the following steps of: 1) Operation before drilling: mounting the bottom drill bit 1, the lower drill collar 2, the middle drill pipe 3 and the upper derrick 4; 2) drilling down: injecting a drilling fluid downward through the internal drill pipe 301 and the drill collar 2, starting the rotating disc 404 to enable the rotating disc to rotate, wherein the rotating disc 404 drives the square drill pipe 405 to rotate, the square drill pipe 405 drives the middle drill pipe to rotate, the middle drill pipe drives the drill collar 2 to rotate, the drill collar 2 drives the bottom drill bit 1 to rotate and the bottom drill bit 1 drives the spiral rotating rod 201 in the drill collar 2 to rotate; in a process of drilling deeply underground from a surface of a stratum, feeding the rocks cut by the cutting edges 102 into the drill collar 2 through the gap between the internal disc 501 and the external disc 502, conveying the rocks cut by the cutting blades 201-2 spirally upward into the internal drill pipe 301 through the conveying blade 201- 3, wherein as the rocks are conveyed upward continuously, the rocks in the internal drill pipe 301 are accumulated continuously, and finally, the rocks are discharged through the lifting mechanism 7; 3) Connecting a single drill pipe: when the length of the middle drill pipe 3 is insufficient relative to the drilling depth, detaching the connection between the lower end of the lifting mechanism 7 and the drill pipe at the uppermost end, connecting a drill pipe 3 above the drill pipe at the uppermost end, keeping all drill pipes 3 up and down be coaxially connected, and meanwhile, elongating a hook connector 403, connecting the lifting mechanism 7 to the drill pipe 3 at the uppermost end again, and performing a drilling operation downward continuously;
    4) Repeating the step 3), pulling away the internal drill pipe 301 from the external sleeve 302 after drilling a depth of a drill collar 2 downward till the bottom drill bit 1 arrives at the target layer, and reserving the external sleeve 302 to support the wall of the well; and
    5) Grouting: injecting cement slurry to the periphery of the external sleeve 302.
    权利要求:
    Claims (5)
    [1]
    A drilling equipment capable of reinforcing a well wall comprising a bottom drill portion, a lower drill collar, a middle drill pipe and an upper derrick, the drill portion comprising a disc-shaped main body, a plurality of cutting edges uniformly distributed circumferentially along the disc-shaped main body, some ends of the cutting edges are fixed on a center of the disc-shaped main body and other ends of the cutting edges project beyond a plane within which the disc-shaped main body is present; a chip removal opening is formed in the disc-shaped main body between adjacent cutting edges, and the chip removal opening is a through-hole extending through an upper end surface and lower end surface of the disc-shaped main body; the drill collar is connected to the drill portion through a drill plate comprising an internal disk and an external disk, the internal disk and the external disk being circular rings with a center cavity, the internal disk is located at the center of the external disk, and the internal disk and the external disk are connected through a connection plate; and a lower end surface of the external disk is connected to the drilling portion; the drill collar is a hollow housing, a rotating spiral rod is arranged in an inner space of the drill collar, the rotating spiral rod includes a rotating shaft vertically arranged along a longitudinal direction of the sleeve, a transport blade spirally arranged outside the rotating shaft on an enclosing manner, and a cutting blade circumferentially connected to an outer wall of the rotary shaft, and a connection provided between a lower side of the transport blade and the lower end of the rotary shaft, the lower end of the rotary shaft is in the internal disk stabbed; and a lower end surface of the sleeve is connected to an upper end surface of the external disk; the drill pipe is connected to the upper end of the drill collar by a clamp ring, the drill pipe and the drill collar are arranged coaxially, and a diameter of the drill pipe is not greater than the diameter of the drill collar, a threaded upper section and a threaded lower section are provided on an inner wall of the clamp ring, the lower threaded section is connected to a threaded section formed in an outer wall of the upper end of the drill collar, and the upper threaded section is connected with a threaded section provided on an outer wall of the lower end of the drill pipe; the drill pipe comprises an external sleeve having an inner cavity and an internal drill pipe arranged in the hollow space of the external sleeve and in a longitudinal direction, the internal drill pipe being a hollow internal rock channel, and the internal drill pipe being connected to the external casing via a connecting mechanism; and a filter screen is arranged in the lower part of the space between the internal drill pipe and the external sleeve; the derrick is provided above the drill pipe and includes a derrick main body and a plurality of mounting tables arranged in the main body, a hook is mounted on the top mounting table, a rotary disk is mounted on the bottom mounting table, the rotary disk includes a rotary disk main body, a ball bearing is provided in the center portion of the rotary shit main body, and a square hole to match with a square drill pipe is formed in the center of the ball bearing; the upper end of the square drill pipe is connected to the hook, the lower end of the square drill pipe extends through the square hole and is connected to the upper end of the elevator mechanism, and the lower end of the elevator mechanism is connected to the internal drill pipe; and the elevator mechanism is a hollow column housing, a thread section which mates with the thread section at the lower end of the outer wall of the square drill pipe, is arranged at the upper end of the inner wall of the elevator mechanism, and a thread section which mates with the thread section at the upper end of the inner wall of the internal drill pipe is arranged at the lower end of the outer wall of the elevator mechanism; and a wall of the hollow column housing is provided with through-cavities.
    [2]
    A drilling equipment capable of reinforcing a shaft wall according to claim 1, characterized in that the connecting mechanism comprises first assembly slots and second assembly slots formed in the upper end and the lower end of an inner wall of the external sleeve in a separate manner; wherein a central axis of the external sleeve is regarded as an axis of symmetry, at least a pair of first assembly slots and second assembly slots are formed; where each first assembly slot has a pair of boundary blocks | which are arranged opposite each other and the boundary blocks | are arranged vertically on the inner wall of the external sleeve; each second assembly slot comprises a pair of boundary blocks H and a connection block arranged opposite thereto, first ends of the pair of boundary bricks I being vertically arranged on the inner wall of the outer sleeve and the opposite other ends being connected by the connection block; first assembly blocks and second assembly blocks corresponding to the first assembly slots and the second assembly slots are arranged at the upper and lower ends of the outer wall of the internal drill pipe in a separate manner, the first assembly blocks mating with the first assembly slots in shape and size and clamped in the first assembly slots, and the second assembly blocks have inverted L shapes, horizontal arms of the second assembly blocks are connected to the outer wall of the internal drill pipe, vertical arms of the second assembly blocks are mated to the second assembly slots in shape and size and are clamped in the second assembly slots to thereby form a hook-matching structure.
    [3]
    A drilling equipment capable of reinforcing a shaft wall according to claim 1, characterized in that the number of cutting edges is four and the number of cutting edges is four. connecting plates is four, and the cutting edges and the connecting plates are distributed circumferentially and uniformly.
    [4]
    4. Application method of drilling equipment capable of strengthening a shaft wall, comprising the steps of: 1) Preparation steps for drilling: arranging the bottom drilling section, the lower drill collar, the middle drill pipe and the upper derrick, 2) Drilling in the ground: injecting drilling fluids downward through the internal drill pipe and the drill collar, starting the rotary disk to rotate, the rotary disk driving the square drill pipe to rotate, the square drill pipe drives the middle drill pipe to rotate, the middle drill pipe drives the drill collar to rotate, the drill collar drives the bottom drill section to rotate, and the bottom drill section drives the rotating spiral rod in the drill collar to rotate, in a process of drilling deep into the subsurface from a surface of a layer , wherein stones cut by the cutting edges are guided into the drill collar through the gap between the internal disk and the external disk, wherein the stones cut by the cutting blades are conveyed in upward spiral direction in the internal drill pipe by the conveying blade, the stones are continuously conveyed upward, and in the internal drill pipe are continuously collected and finally discharged by the lift mechanism;
    3) Connecting a single drill pipe: When the length of the middle drill pipe is insufficient for the drilling depth, disconnecting the connection between the lower end of the elevator mechanism and the drill pipe at the highest end, connecting a drill pipe above the highest end of the drill pipe, all of the drill pipes being coaxially connected at the bottom and the top, and meanwhile extending a hook connector, reconnecting the lift mechanism to the drill pipe at the top end, and performing a downward drilling operation in a continuous manner;
    4) Repeating step 3), removing the internal drill pipe from the external sleeve after a depth of a drill collar has been drilled downwardly until the bottom drill portion reaches the target layer, and placing the external sleeve to reinforce the shaft wall; and
    [5]
    5) Grouting: Injecting a cement slurry around the perimeter of the external sleeve.
    类似技术:
    公开号 | 公开日 | 专利标题
    RU2594032C2|2016-08-10|Systems and methods for using passage through underground formations
    US7775304B2|2010-08-17|Apparatus and method for driving casing or conductor pipe
    CN103867119B|2016-08-03|Coal seam reservoirs completion remodeling method
    CN102086756A|2011-06-08|Hole-dilating drill for pressure reduction and speed acceleration
    CA1167872A|1984-05-22|Bore hole mining
    CN201810207U|2011-04-27|Rotary excavation drilling machine and rotary excavation drilling tool thereof
    CN107387082A|2017-11-24|A kind of method for weakening coal seam tight roof
    CN104080999B|2017-08-11|The method that pressure break is carried out while drilling well
    CN108798516B|2020-08-04|Cave pressure relief mining method for tectonic coal in-situ coal bed gas horizontal well
    CN205297337U|2016-06-08|Cave ware is drawn in reaming for well drilling
    CN104912479B|2017-01-11|Method for drilling and completion of horizontal branched well for coal bed gas
    AU2014295716B2|2016-09-29|Drilling and draining integrated floor anchoring driller
    NL2028151A|2021-09-28|Drilling equipment capable of reinforcing wall of well and use method thereof
    CN101915059B|2011-12-07|Process method for well completion at equal borehole diameter
    US20110315397A1|2011-12-29|Producing hydrocarbon material from a layer of oil sand
    RU2453674C1|2012-06-20|Method of well operation
    CN202073498U|2011-12-14|Chambering type pressure-reduction acceleration drill bit
    CN106437570A|2017-02-22|Drilling type continuous sand blasting device
    CN111577182A|2020-08-25|Deep sea hard rock efficient rope coring system and coring drilling method thereof
    US10704354B2|2020-07-07|Zonal isolation of a subterranean wellbore
    RU2541978C1|2015-02-20|Well construction method
    RU2478768C1|2013-04-10|Method for well drilling
    CN106245666B|2019-01-15|A kind of piling Technology
    CN215927280U|2022-03-01|Sleeve pipe construction equipment
    CN106639912A|2017-05-10|Hydraulic type rigid sleeve centralizer
    同族专利:
    公开号 | 公开日
    CN113153143A|2021-07-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5957225A|1997-07-31|1999-09-28|Bp Amoco Corporation|Drilling assembly and method of drilling for unstable and depleted formations|
    EP1895090A1|2006-08-23|2008-03-05|Bauer Spezialtiefbau GmbH|Method and apparatus for creating a borehole in the ground|
    CN108005576B|2017-11-30|2019-05-17|中建三局第一建设工程有限责任公司|It is a kind of to separate the rotary drilling rig and rotary digging drilling construction method slagged tap|
    CN111441725A|2020-05-16|2020-07-24|扬州市江隆矿业设备有限公司|Reducing drill bit for nearly horizontal auger stem machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN202110405082.8A|CN113153143A|2021-04-15|2021-04-15|Drilling equipment capable of reinforcing well wall and using method thereof|
    [返回顶部]