CN112878924A - Large-diameter seamless drill pipe and machining process thereof - Google Patents
Large-diameter seamless drill pipe and machining process thereof Download PDFInfo
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- CN112878924A CN112878924A CN202110114082.2A CN202110114082A CN112878924A CN 112878924 A CN112878924 A CN 112878924A CN 202110114082 A CN202110114082 A CN 202110114082A CN 112878924 A CN112878924 A CN 112878924A
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- 238000003754 machining Methods 0.000 title description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 230000006978 adaptation Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
Abstract
The application relates to a large-diameter seamless drill pipe and a processing technology thereof, the large-diameter seamless drill pipe comprises a drill pipe main body, wherein an embedded groove is formed in the end wall of one end of the drill pipe main body in the length direction, a pressure bearing pipe is arranged in the embedded groove of the drill pipe main body, and a positioning assembly is jointly arranged between the pressure bearing pipe and the drill pipe main body; the positioning assembly comprises a positioning rod and a clamping and fixing piece, the positioning rod is positioned in the embedded groove, a through hole is arranged in the end wall of the pressure-bearing pipe in the length direction in a penetrating mode, a positioning groove is arranged in the end wall of the positioning rod far away from the main body direction of the drill pipe, a rod body of the clamping and fixing piece is in threaded fit with the positioning groove, and the end of the clamping and fixing piece is abutted to the positioning rod and the pressure-bearing pipe simultaneously; the processing technology of the large-diameter seamless drill pipe comprises the following steps: sleeving and positioning, fixing the inner end and fixing the outer end. This application has the stability that effectively ensures the long-time use of drill pipe main part, and the operating personnel of being convenient for installs and dismantles the effect of pressure-bearing pipe at drill pipe main part inner chamber fast.
Description
Technical Field
The application relates to the field of seamless drill pipes, in particular to a large-diameter seamless drill pipe and a machining process thereof.
Background
The seamless drill pipe is a steel pipe for geological drilling, and is mostly matched with drilling equipment for use. The seamless drill pipe can be sleeved on the outer edge of the output end of the drilling equipment through the guide drill bit, and the output end of the drilling equipment drives the seamless drill pipe to drill into the interior of the geology in the drilling process. And then, the guide drill bit is retracted inwards to enable the seamless drill pipe to be sleeved outside the outer edge of the output end of the drilling equipment, and after the output end of the drilling equipment is pulled out of the geological layer, the seamless drill pipe is fixed inside the geological layer for subsequent use.
Chinese patent publication No. CN105247159A discloses a shale drill pipe, which comprises a main pipe body and two tool joints. Two tool joints are respectively positioned at two ends of the main pipe body in the length direction, and one end of the main pipe body close to the tool joint direction is provided with a thickened part. The thickening portion is used for fixed connection main pipe body and tool joint, and then when the guarantee drilling head possesses high penetration rate in geological stratification inside, has ensured main pipe body intensity and stability in follow-up use.
In view of the above-mentioned related technologies, the inventor believes that there is a large-diameter seamless drill pipe which is positioned inside a geological formation and is easy to cause different degrees of abrasion on the inner wall thereof after being used for a long time, and the increase of the abrasion amount of the inner wall of the drill pipe is easy to affect the overall strength of the drill pipe, thereby reducing the use stability of the drill pipe in the subsequent stage.
Disclosure of Invention
In a first aspect, the application provides a large-diameter seamless drill pipe in order to improve the problem that the inner wall abrasion of the large-diameter seamless drill pipe easily influences the use stability of the drill pipe.
The application provides a large-diameter seamless drill pipe adopts following technical scheme:
a large-diameter seamless drill pipe comprises a drill pipe main body, wherein an inner embedded groove is formed in the end wall of one end of the drill pipe main body in the length direction, a pressure bearing pipe is arranged in the inner embedded groove of the drill pipe main body, and a positioning assembly is arranged between the pressure bearing pipe and the drill pipe main body; the positioning assembly comprises an orientation rod and a clamping piece, the orientation rod is positioned in the embedded groove, and the orientation rod extends along the length direction of the drill pipe main body; the end wall of the pressure-bearing pipe in the length direction is provided with a through hole for the directional rod to abut into conveniently in a penetrating mode, the end wall of the directional rod far away from the drill pipe body is provided with a positioning groove, the rod body of the clamping piece is in threaded fit in the positioning groove, and the end of the clamping piece abuts against the directional rod and the pressure-bearing pipe simultaneously.
By adopting the technical scheme, after the pressure-bearing pipe is worn to a certain degree in the inner cavity of the drill pipe main body for a long time, an operator can screw the clamping piece to enable the rod body of the clamping piece to be separated from the inner cavity of the positioning groove, and then the pressure-bearing pipe can be separated from the inner caulking groove in a mode of drawing the pressure-bearing pipe; then, an operator can prop the spare pressure-bearing pipe into the inner cavity of the inner caulking groove, along with the propping of the orientation rod into the inner cavity of the through hole, the operator can screw the rod body thread of the clamping piece into the positioning groove, and the end of the clamping piece simultaneously props against the orientation rod and the pressure-bearing pipe, so as to ensure the position stability of the new pressure-bearing pipe in the inner caulking groove; the pressure-bearing strength of the inner cavity of the drill pipe main body is guaranteed in the process by replacing the pressure-bearing pipe, and the stability of the drill pipe main body in the subsequent use process is further effectively guaranteed.
Preferably, the outer edge of the directional rod is provided with a plurality of limiting plates, and the end wall of the pressure-bearing pipe in the length direction and the position of the through-connection hole are provided with a sliding groove which is convenient for the limiting plates to abut into in a penetrating manner.
Through adopting above-mentioned technical scheme, when the guide bar supports into logical through hole inner chamber, the limiting plate supports into the groove inner chamber that slides, and then through the lateral support power that the limiting plate provided to the pressure-bearing pipe to the positional stability of caulking groove inner chamber including the guarantee pressure-bearing pipe reduces the relative drill pipe main part of pressure-bearing pipe and appears the pine and shake, the phenomenon of prejudice.
Preferably, the outer edge of the pressure bearing pipe is provided with a plurality of extension plates, and the end wall of the drill pipe body in the length direction is provided with a settling tank convenient for the extension plates to abut into.
Through adopting above-mentioned technical scheme, the extension board supports into the subsider inner chamber to guarantee the position stability of pressure-bearing pipe and drill pipe main part at length direction's end, and then effectively improved the joint strength after pressure-bearing pipe and the drill pipe main part are fixed.
Preferably, a connecting assembly is arranged between the extension plate and the drill pipe main body, and comprises a connecting rod and a locking piece; the connecting rod is located the subsider, the extension board roof runs through to be provided with the hole of stepping down that is convenient for the connecting rod to pass, lock piece screw-thread fit is in the connecting rod outer fringe.
Through adopting above-mentioned technical scheme, the connecting rod passes the hole of stepping down to further inject the relative subsider position of extension board, the lock piece is screwed up at connecting rod outer fringe screw thread, so that the extension board is fixed in the subsider inner chamber, and then has further improved the joint strength of pressure-bearing pipe and drill pipe main part.
Preferably, a limiting assembly is arranged between the drill pipe main body and the pressure bearing pipe, and comprises a fixed block and a clamping block; the fixed block is positioned on the end wall of the drill pipe body in the length direction, the clamping block is positioned on the end wall of the pressure-bearing pipe in the length direction, and the clamping block extends to the outside of the pressure-bearing pipe; the lateral wall that the drill pipe main part direction was kept away from to the fixed block is provided with the guide way that the block of being convenient for supported into.
Through adopting above-mentioned technical scheme, after the caulking groove inner chamber in the pressure-bearing pipe supports completely, the one end of block length direction supports into the guide way inner chamber, and then makes the position stability of the relative drill pipe main part of pressure-bearing pipe can further improve to further reduce the relative drill pipe main part of pressure-bearing pipe and appear the phenomenon of pine shake, migration, improved the stability in use of pressure-bearing pipe in drill pipe main part inner chamber.
Preferably, a bundling piece is arranged between the fixed block and the clamping block together, and the bundling piece comprises a bundling bolt and a bundling nut; the rod body of the tightening bolt penetrates through the fixing block and the clamping block, and the tightening nut is in threaded fit with the outer edge of the rod body of the tightening bolt.
Through adopting above-mentioned technical scheme, the body of rod of binding bolt can run through fixed block and block simultaneously, and the nut of binding can be screwed up at the body of rod outer fringe screw thread of binding bolt, and then so that fixed block and block fixed connection, and this process has further improved the joint strength of pressure-bearing pipe and drill pipe main part.
Preferably, a stabilizing assembly is arranged between the drill pipe main body and the pressure bearing pipe, and comprises a pulling piece and a fixing piece; the counter-pulling piece comprises a connecting plate, a first clamping arc plate and a second clamping arc plate, wherein the first clamping arc plate and the second clamping arc plate are respectively positioned at two ends of the connecting plate in the height direction; the drill pipe comprises a drill pipe body and is characterized in that a first through groove is formed in the inner side wall of the drill pipe body, a second through groove is formed in the inner side wall of the pressure bearing pipe, the first through groove is communicated with an inner cavity of the second through groove, the counter-pulling piece can be simultaneously abutted against the inner cavity of the first through groove and the inner cavity of the second through groove, and the fixing piece is used for fixedly connecting the counter-pulling piece, the drill pipe body and the pressure bearing pipe.
By adopting the technical scheme, after the counter-pulling piece is abutted into the inner cavities of the first through groove and the second through groove, the pressure-bearing pipe and the drill pipe main body can be fixedly connected into a whole at the joint of the first through groove and the second through groove; the fixing piece is fixedly connected with the counter-pulling piece, the drill pipe main body and the pressure-bearing pipe so as to further improve the connection strength of the pressure-bearing pipe and the drill pipe main body.
Preferably, a support assembly is arranged between the first clamping arc plate and the second clamping arc plate, and comprises an end block and a side supporting plate; the end blocks are respectively positioned at two ends of the side supporting plate in the length direction, a first accommodating groove convenient for the end block to abut into is formed in the outer side wall of the first clamping arc plate, and a second accommodating groove convenient for the end block to abut into is formed in the outer side wall of the second clamping arc plate; the drill pipe main part inside wall is provided with the adaptation groove, the bearing pipe inside wall is provided with corresponding groove, adaptation inslot chamber communicates with each other with corresponding inslot chamber, the fagging can be simultaneously to the adaptation groove, correspond inslot chamber.
By adopting the technical scheme, the end blocks can be respectively abutted into the inner cavities of the first accommodating groove and the second accommodating groove, and the side supporting plate can be simultaneously abutted into the adaptive groove and the corresponding groove inner cavity so as to fixedly connect the first clamping arc plate and the second clamping arc plate; the process effectively improves the use stability of the first clamping arc plate and the second clamping arc plate, and improves the connection strength of the counter-pulling piece to the pressure bearing pipe and the drill pipe main body.
In a second aspect, the application provides a machining process of a large-diameter seamless drill pipe, aiming at solving the problem that a pressure-bearing pipe is inconvenient to machine in an inner cavity of a drill pipe main body.
The application provides a processing technology of a large-diameter seamless drill pipe, which comprises the following processing steps:
s100, sleeving and positioning: aligning the pressure-bearing pipe to the inner embedded groove and abutting the pressure-bearing pipe, abutting the directional rod to the inner cavity of the through connecting hole, abutting the limiting plate to the inner cavity of the sliding groove, abutting the extension plate to the inner cavity of the settling tank, penetrating the connecting rod through the abdicating hole, and abutting the clamping block to the inner cavity of the guide groove; when the end wall of the pressure-bearing pipe far away from the drill pipe main body is coplanar with the end wall of the drill pipe main body provided with the embedded groove, the pressure-bearing pipe is stably positioned in the inner cavity of the embedded groove;
s200, fixing the inner end: aligning the counter-pulling piece with the first through groove and the second through groove and abutting the counter-pulling piece, aligning the end block with the first accommodating groove and the second accommodating groove and abutting the end block with the first accommodating groove and the second accommodating groove so that the side supporting plate abuts the adaptive groove and the corresponding groove inner cavity at the same time; then, fixing the position of the end block relative to the counter-pulling piece by using a fixing piece, and fixing the position of the counter-pulling piece relative to the drill pipe main body and the pressure bearing pipe by using the fixing piece so as to fixedly connect the pressure bearing pipe and the drill pipe main body;
s300, fixing the outer end: screwing the rod body threads of the clamping piece into the positioning groove, so that the end head of the clamping piece is simultaneously abutted against the directional rod and the pressure-bearing pipe; screwing the locking piece on the outer edge of the connecting rod in a threaded manner; and the rod body of the tightening bolt simultaneously penetrates through the fixed block and the clamping block, and then the tightening nut is screwed on the outer edge of the rod body of the tightening bolt.
Through adopting above-mentioned technical scheme, operating personnel can be fast, convenient with bearing pipe fixed mounting in drill pipe main part inner chamber to be convenient for operating personnel to dismantle old and useless bearing pipe fast, in order to renew.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the whole use strength of the drill pipe main body is guaranteed by replacing the old bearing pipe, so that the stability of the drill pipe main body in the subsequent use process is effectively guaranteed;
2. through to drawing the piece to support simultaneously first logical groove, the second leads to the groove inner chamber to with mounting fixed connection to drawing piece and drill pipe main part, pressure-bearing pipe, with the joint strength and the stability that improve pressure-bearing pipe and drill pipe main part, and then with the stability in use of guarantee pressure-bearing pipe at drill pipe main part inner chamber.
Drawings
FIG. 1 is a schematic diagram of a large diameter seamless drill pipe according to an embodiment of the present application;
FIG. 2 is a schematic view of the connection of the drill pipe body and the pressure bearing pipe;
FIG. 3 is an exploded schematic view of the connection relationship of the drill pipe body, the pressure bearing pipe and the counter-pull member;
FIG. 4 is an exploded view of the connection of the side panel and the tension member;
FIG. 5 is an exploded schematic view of the positional relationship of the directional rod, clamp and drill pipe body;
figure 6 is an exploded schematic view of the connection of the drill pipe body and the pressure bearing pipe.
Description of reference numerals: 1. a drill pipe body; 11. an embedded groove is formed; 12. a first through groove; 13. an adaptation groove; 14. a settling tank; 2. a pressure bearing pipe; 21. a second through groove; 22. a corresponding groove; 23. a through hole; 24. a sliding groove; 25. an extension plate; 251. a hole of abdication; 3. a stabilizing assembly; 31. a counter-pulling piece; 311. a connecting plate; 312. a first clamping arc plate; 3121. a first receiving groove; 313. the second clamping arc plate; 3131. a second receiving groove; 32. a fixing member; 4. a support assembly; 41. an end block; 42. a side supporting plate; 5. a positioning assembly; 51. an orientation bar; 511. a limiting plate; 512. positioning a groove; 52. a clamping and fixing piece; 6. a connecting assembly; 61. a connecting rod; 62. a locking member; 7. a limiting component; 71. a fixed block; 711. a guide groove; 72. a clamping block; 8. a bundling member; 81. tightening the bolt; 82. and (5) tightening the nut.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses a large-diameter seamless drill pipe. Referring to fig. 1, a large diameter seamless drill pipe includes a drill pipe body 1. The drill pipe main body 1 is a seamless steel pipe with a large diameter, and an operator can enter the inner cavity of the drill pipe main body 1 to operate. The end wall of the length direction one end of the drill pipe main body 1 is provided with an embedded groove 11 around the periphery of the through hole of the drill pipe main body, the embedded groove 11 extends along the length direction of the drill pipe main body 1, and the length size of the embedded groove 11 is smaller than that of the drill pipe main body 1.
Referring to fig. 1, a pressure-bearing pipe 2 is arranged in an inner cavity of an embedded groove 11 of a drill pipe body 1, and the peripheral size of the pressure-bearing pipe 2 is matched with the inner diameter size of the embedded groove 11. After the pressure-bearing pipe 2 completely supports the inner cavity of the embedded groove 11, the inner side wall of the pressure-bearing pipe 2 is coplanar with the inner side wall of the drill pipe body 1, and the end wall of the pressure-bearing pipe 2 far away from the embedded groove 11 and the end wall of the drill pipe body 1 provided with the embedded groove 11 are located on the same longitudinal plane.
Referring to fig. 2, a stabilizing assembly 3 is provided between the drill pipe body 1 and the pressure bearing pipe 2, and the stabilizing assembly 3 is located in the inner cavity of the drill pipe body 1, so that the drill pipe body 1 and the pressure bearing pipe 2 are primarily fixed. The stabilizing assembly 3 comprises a counter-pull 31 and a fixing 32, in this embodiment the fixing 32 is a bolt. The counter-pulling member 31 includes a connecting plate 311, a first clamping arc plate 312 and a second clamping arc plate 313, and the first clamping arc plate 312 and the second clamping arc plate 313 are vertically welded to two ends of the connecting plate 311 in the length direction. Wherein, first joint arc plate 312 is the arc of external diameter radian and the internal diameter radian looks adaptation of drill pipe main part 1, and second joint arc plate 313 is the arc of external diameter radian and the internal diameter radian looks adaptation of pressure-bearing pipe 2, and the length dimension of first joint arc plate 312 and second joint arc plate 313 all is greater than the width dimension of connecting plate 311.
Referring to fig. 2 and 3, a first through groove 12 is formed in the inner side wall of the drill pipe body 1 and located in the inner embedding groove 11, an inner cavity of the first through groove 12 is communicated with an inner cavity of the inner embedding groove 11, and the inner cavity of the first through groove 12 is convenient for the first clamping arc plate 312 and one end of the connecting plate 311 close to the first clamping arc plate 312 to abut into. The one end that the pressure-bearing pipe 2 inside wall just is located its length direction is provided with the second that equals first logical groove 12 quantity and leads to groove 21, and after the interior caulking groove 11 inner chamber was supported completely to pressure-bearing pipe 2, the mutual symmetry and the inner chamber that lead to groove 21 are led to first logical groove 12 and second that are close to each other communicate with each other.
Referring to fig. 4, a support assembly 4 is disposed between the first clamping arc plate 312 and the second clamping arc plate 313, and the support assembly 4 is used to improve the connection strength between the pressure bearing pipe 2 and the drill pipe body 1. The support assembly 4 comprises end blocks 41 and side supporting plates 42, wherein the end blocks 41 are perpendicularly welded at two ends of the length direction of the side supporting plates 42, and the length dimension of the end blocks 41 is larger than the width dimension of the side supporting plates 42.
Referring to fig. 4, a side wall of the first clamping arc plate 312 in a direction away from the drill pipe body 1 is provided with a first receiving groove 3121, and an inner diameter of the first receiving groove 3121 is matched with an outer circumference of the end block 41. A second receiving groove 3131 is formed in a side wall of the second clamping arc plate 313 away from the pressure-bearing pipe 2, and an inner diameter of the second receiving groove 3131 is also matched with an outer circumference of the end block 41. An adaptation groove 13 is formed in the inner side wall of the drill pipe body 1 and located at the first through groove 12, and an inner cavity of the adaptation groove 13 is communicated with an inner cavity of the first through groove 12. The inner side wall of the pressure bearing pipe 2 and the position of the second through groove 21 are provided with corresponding grooves 22, and the inner cavities of the corresponding grooves 22 are communicated with the inner cavity of the second through groove 21. When the pressure-bearing pipe 2 completely pushes into the inner cavity of the embedded groove 11, the matching grooves 13 and the corresponding grooves 22 which are close to each other are symmetrical with each other and the inner cavities are communicated.
Referring to fig. 2 and 4, an operator can push the opposite pulling member 31 into the inner cavities of the first through groove 12 and the second through groove 21, at this time, the end of the first clamping arc plate 312 and the end of the connecting plate 311 close to the first arc plate push the inner cavity of the first through groove 12, and the end of the second clamping arc plate 313 and the end of the connecting plate 311 close to the second clamping arc plate 313 push the inner cavity of the second through groove 21. Then, the operator can push the side supporting plate 42 into the inner cavities of the fitting groove 13 and the corresponding groove 22, and the end blocks 41 are positioned in the inner cavities of the first receiving groove 3121 and the second receiving groove 3131, respectively. An operator can thread the rod body of the fixing member 32 through the connecting plate 311 into the preset thread grooves on the inner side walls of the first through groove 12 and the second through groove 21, thread the rod body of the fixing member 32 through the end block 41 and the first clamping arc plate 312 and thread the rod body into the preset thread grooves on the inner side walls of the drill pipe body 1, and thread the rod body of the fixing member 32 through the end block 41 and the second clamping arc plate 313 and thread the rod body into the preset thread grooves on the inner side walls of the pressure bearing pipe 2. At this time, the ends of all the fixing members 32 are settled in the inner cavities of the first through groove 12 and the second through groove 21. The process enables the counter-pulling piece 31 to be fixed in the inner cavities of the first through groove 12 and the second through groove 21 at the same time, and enables the pressure bearing pipe 2 and the drill pipe body 1 to be fixed into a whole at the connection position.
Referring to fig. 5 and 6, a positioning assembly 5 and a limiting assembly 7 are further arranged between the pressure bearing pipe 2 and the drill pipe body 1 together, so as to further improve the connection strength of the pressure bearing pipe 2 and the drill pipe body 1. The positioning assembly 5 includes an orientation rod 51 and a fastener 52, and in this embodiment, the fastener 52 is a bolt. The orientation rod 51 is welded in the inner cavity of the embedded groove 11, the orientation rod 51 extends along the length direction of the drill pipe main body 1, and the end wall of the orientation rod 51 far away from the embedded groove 11 is positioned on the same longitudinal surface with the end wall of the drill pipe main body 1 provided with the embedded groove 11.
Referring to fig. 5 and 6, the outer edge of the orientation rod 51 and the two ends of the orientation rod in the radial direction are respectively and integrally formed with a limiting plate 511, the end wall of the pressure-bearing pipe 2 in the length direction is provided with a through hole 23 along the extending direction thereof, the end wall of the pressure-bearing pipe 2 in the length direction and the two ends of the through hole 23 in the radial direction are respectively provided with a sliding groove 24 in a penetrating manner, and the inner cavity of the sliding groove 24 is communicated with the inner cavity of the through hole 23. When the pressure-bearing pipe 2 is pressed into the inner cavity of the embedded groove 11, the orientation rod 51 is pressed into the inner cavity of the through hole 23, and the limit plate 511 is pressed into the inner cavity of the sliding groove 24, so as to improve the position stability of the pressure-bearing pipe 2 in the inner cavity of the drill pipe body 1.
Referring to fig. 5 and 6, the end wall of the orientation rod 51 facing away from the drill pipe body 1 is provided with a positioning groove 512, and the positioning groove 512 is a threaded groove. The operator can screw the rod body of the fixing member 32 into the positioning groove 512. At this time, the end of the fixing member 32 abuts against the orientation rod 51 and the pressure-bearing pipe 2 at the same time, so as to cooperate with the stabilizing assembly 3, and at the same time, the positions of the two ends of the pressure-bearing pipe 2 in the length direction are limited, and the connection strength between the pressure-bearing pipe 2 and the drill pipe body 1 is further improved.
Referring to fig. 5 and 6, extension plates 25 are respectively integrally formed at the outer edge of the pressure-bearing pipe 2 and at the two radial ends thereof, the end wall of the drill pipe body 1, which is provided with the embedded groove 11, is provided with settling tanks 14, the number of which is equal to that of the extension plates 25, and the inner diameter of each settling tank 14 is matched with the outer circumference of each extension plate 25. After the pressure-bearing pipe 2 completely butts against the inner cavity of the embedded groove 11, the extension plate 25 butts against the inner cavity of the settling tank 14, and the side wall of the extension plate 25 far away from the direction of the drill pipe body 1 is coplanar with the end wall of the drill pipe body 1 in the length direction.
Referring to fig. 5 and 6, a connecting assembly 6 is provided between the extension plate 25 and the drill pipe body 1, and the connecting assembly 6 includes a connecting rod 61 and a locking member 62. In this embodiment, the connecting rod 61 is a screw rod, which is welded perpendicularly to the inner bottom wall of the settling tank 14. The locking member 62 is a nut, and the locking member 62 is screwed on the outer edge of the connecting rod 61.
Referring to fig. 5 and 6, the outer side wall of the extension plate 25 is provided with a relief hole 251 along the thickness direction thereof, and after the extension plate 25 abuts against the inner cavity of the settling tank 14, the connecting rod 61 can pass through the relief hole 251 and extend to the outside of the extension plate 25. At this time, the operator can screw the locking member 62 on the outer edge of the connecting rod 61, so that the extension plate 25 is fixed in the inner cavity of the settling tank 14, thereby further improving the connection strength between the pressure bearing pipe 2 and the drill pipe body 1.
Referring to fig. 6, the limiting assembly 7 includes a fixing block 71 and a locking block 72, the fixing block 71 is vertically welded to the end wall of the drill pipe body 1, where the inner embedding groove 11 is formed, and a guide groove 711 is formed in a side wall of the fixing block 71 away from the drill pipe body 1. The engaging block 72 is vertically welded to the end wall of the pressure pipe 2 in the direction away from the stabilizing assembly 3, and one end of the engaging block 72 in the length direction extends to the outside of the drill pipe body 1. When the pressure-bearing pipe 2 completely abuts against the inner cavity of the embedded groove 11, the end of the engaging block 72 away from the pressure-bearing pipe 2 can abut against the inner cavity of the guiding groove 711, so as to further improve the connection strength and position stability of the pressure-bearing pipe 2 and the drill pipe body 1.
Referring to fig. 6, a tightening member 8 is provided between the fixed block 71 and the engaging block 72, and the tightening member 8 is used to fixedly connect the fixed block 71 and the engaging block 72. The tightening piece 8 comprises a tightening bolt 81 and a tightening nut 82, a rod body of the tightening bolt 81 can penetrate through the fixing block 71 and the clamping block 72 simultaneously, the tightening nut 82 can be screwed on the outer edge of the rod body of the tightening bolt 81 in a threaded mode, so that the connection strength of the fixing block 71 and the clamping block 72 is guaranteed, and the connection strength of the pressure-bearing pipe 2 and the drill pipe main body 1 is further improved.
The implementation principle of the large-diameter seamless drill pipe in the embodiment of the application is as follows: after the drill pipe body 1 is positioned inside the geological formation and used for a long time, an operator may remove the opposite pulling member 31 from the connection of the pressure bearing pipe 2 and the drill pipe body 1 by screwing the fixing member 32. Then, the tightening nut 82 is screwed to be disengaged from the rod body of the tightening bolt 81, and the tightening bolt 81 is pulled away from the fixed block 71 and the engaging block 72. The clamping and fixing piece 52 is screwed and separated from the outer edge of the orientation rod 51, the locking piece 62 is screwed and separated from the outer edge of the connecting rod 61, then, an operator can draw the pressure-bearing pipe 2 out of the inner embedded groove 11 and push the spare pressure-bearing pipe 2 into the inner embedded groove 11 for fixing, so that the pressure-bearing strength of the inner wall of the drill pipe main body 1 is guaranteed, and the stability of the drill pipe main body 1 in the subsequent use process is further guaranteed.
The embodiment of the application also discloses a processing technology of the large-diameter seamless drill pipe. The processing technology of the large-diameter seamless drill pipe comprises the following processing steps:
s100, sleeving and positioning: the operator can align the pressure-bearing pipe 2 with the inner embedding groove 11 and push in, at this time, the orientation rod 51 can push in the inner cavity of the through-connection hole 23, and the limit plate 511 can push in the inner cavity of the sliding groove 24. After the pressure-bearing pipe 2 completely supports into the inner cavity of the inner caulking groove 11, the end wall of the pressure-bearing pipe 2 far away from the direction of the drill pipe body 1 and the end wall of the drill pipe body 1 with the inner caulking groove 11 are coplanar, the extension plate 25 can completely support into the inner cavity of the settling tank 14, the connecting rod 61 penetrates through the abdicating hole 251 and extends to the outside of the extension plate 25, the clamping block 72 supports into the inner cavity of the guide groove 711, and the position of the pressure-bearing pipe 2 relative to the drill pipe body 1 can be preliminarily limited.
S200, fixing the inner end: an operator can align the opposite pulling member 31 with the first through groove 12 and the second through groove 21 and push the opposite pulling member into the through groove, at this time, the inner cavity of the first through groove 12 is pushed into by the end of the first clamping arc plate 312 and the end of the connecting plate 311 close to the first arc plate direction, and the inner cavity of the second through groove 21 is pushed into by the end of the second clamping arc plate 313 and the end of the connecting plate 311 close to the second clamping arc plate 313 direction. Then, the operator can push the end block 41 into the corresponding first receiving groove 3121 and second receiving groove 3131, and push the side supporting plate 42 into the inner cavities of the fitting groove 13 and the corresponding groove 22.
Then, the operator can thread the rod body of the fixing member 32 through the connecting plate 311 into the preset thread grooves on the inner side walls of the first through groove 12 and the second through groove 21, thread the rod body of the fixing member 32 through the end block 41 and the first clamping arc plate 312 and thread the rod body into the preset thread grooves on the inner side walls of the drill pipe body 1, and thread the rod body of the fixing member 32 through the end block 41 and the second clamping arc plate 313 and thread the rod body into the preset thread grooves on the inner side walls of the pressure bearing pipe 2. The process enables the connection part of the pressure-bearing pipe 2 and the drill pipe main body 1 to be fixedly connected, and further enables the pressure-bearing pipe 2 and the drill pipe main body 1 to be initially fixed into a whole.
S300, fixing the outer end: an operator can screw the rod body of the fastening member 52 into the positioning groove 512, so that the end of the fastening member 52 abuts against the orientation rod 51 and the pressure-bearing pipe 2. Then, the locking member 62 is screwed to the outer edge of the connecting rod 61, the rod body of the tightening bolt 81 is simultaneously inserted through the fixing block 71 and the engaging block 72, and the tightening nut 82 is screwed to the outer edge of the rod body of the tightening bolt 81, so as to further improve the connection strength and stability between the pressure-bearing pipe 2 and the drill pipe body 1.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. A large diameter seamless drill pipe, comprising a drill pipe body (1), characterized in that: an inner embedded groove (11) is formed in the end wall of one end of the drill pipe main body (1) in the length direction, a pressure bearing pipe (2) is arranged in the inner embedded groove (11) of the drill pipe main body (1), and a positioning assembly (5) is arranged between the pressure bearing pipe (2) and the drill pipe main body (1) together; the positioning assembly (5) comprises an orientation rod (51) and a clamping piece (52), the orientation rod (51) is located in the embedded groove (11), and the orientation rod (51) extends along the length direction of the drill pipe main body (1); the end wall of the length direction of the pressure bearing pipe (2) penetrates through a through hole (23) which is convenient for the directional rod (51) to abut into, a positioning groove (512) is formed in the end wall of the directional rod (51) far away from the direction of the drill pipe main body (1), the rod body of the clamping piece (52) is in threaded fit in the positioning groove (512), and the end of the clamping piece (52) abuts against the directional rod (51) and the pressure bearing pipe (2) simultaneously.
2. A large diameter seamless drill pipe according to claim 1, wherein: the outer edge of the orientation rod (51) is provided with a plurality of limiting plates (511), and the end wall of the length direction of the pressure-bearing pipe (2) is provided with a sliding groove (24) which is convenient for the limiting plates (511) to abut into and is positioned at the through hole (23) in a penetrating manner.
3. A large diameter seamless drill pipe according to claim 2, wherein: the outer edge of the pressure bearing pipe (2) is provided with a plurality of extension plates (25), and the end wall of the drill pipe main body (1) in the length direction is provided with a settling tank (14) which is convenient for the extension plates (25) to abut into.
4. A large diameter seamless drill pipe according to claim 3, wherein: a connecting assembly (6) is arranged between the extension plate (25) and the drill pipe main body (1), and the connecting assembly (6) comprises a connecting rod (61) and a locking piece (62); connecting rod (61) are located subsider (14), extension board (25) roof runs through and is provided with the hole of stepping down (251) that are convenient for connecting rod (61) to pass, lock piece (62) screw-thread fit is in connecting rod (61) outer fringe.
5. A large diameter seamless drill pipe according to claim 4, wherein: a limiting component (7) is arranged between the drill pipe main body (1) and the pressure bearing pipe (2), and the limiting component (7) comprises a fixing block (71) and a clamping block (72); the fixing block (71) is positioned on the end wall of the drill pipe main body (1) in the length direction, the clamping block (72) is positioned on the end wall of the pressure-bearing pipe (2) in the length direction, and the clamping block (72) extends to the outside of the pressure-bearing pipe (2); the side wall of the fixing block (71) far away from the direction of the drill pipe main body (1) is provided with a guide groove (711) which is convenient for the clamping block (72) to abut into.
6. A large diameter seamless drill pipe according to claim 5, wherein: a bundling piece (8) is arranged between the fixed block (71) and the clamping block (72) together, and the bundling piece (8) comprises a bundling bolt (81) and a bundling nut (82); the rod body of the tightening bolt (81) penetrates through the fixing block (71) and the clamping block (72) at the same time, and the tightening nut (82) is in threaded fit with the outer edge of the rod body of the tightening bolt (81).
7. A large diameter seamless drill pipe according to claim 1, wherein: a stabilizing assembly (3) is arranged between the drill pipe main body (1) and the pressure bearing pipe (2), and the stabilizing assembly (3) comprises a counter-pulling piece (31) and a fixing piece (32); the counter-pulling piece (31) comprises a connecting plate (311), a first clamping arc plate (312) and a second clamping arc plate (313), wherein the first clamping arc plate (312) and the second clamping arc plate (313) are respectively positioned at two ends of the connecting plate (311) in the height direction; the drill pipe is characterized in that a first through groove (12) is formed in the inner side wall of the drill pipe main body (1), a second through groove (21) is formed in the inner side wall of the pressure bearing pipe (2), the first through groove (12) is communicated with the inner cavity of the second through groove (21), the counter-pull piece (31) can be simultaneously abutted to the inner cavity of the first through groove (12) and the second through groove (21), and the fixing piece (32) is used for fixedly connecting the counter-pull piece (31) and the drill pipe main body (1) and the pressure bearing pipe (2).
8. A large diameter seamless drill pipe according to claim 7, wherein: a support assembly (4) is arranged between the first clamping arc plate (312) and the second clamping arc plate (313), and the support assembly (4) comprises an end block (41) and a side supporting plate (42); the end blocks (41) are respectively positioned at two ends of the side supporting plate (42) in the length direction, a first accommodating groove (3121) which is convenient for the end blocks (41) to abut into is arranged on the outer side wall of the first clamping arc plate (312), and a second accommodating groove (3131) which is convenient for the end blocks (41) to abut into is arranged on the outer side wall of the second clamping arc plate (313); the drill pipe main part (1) inside wall is provided with adaptation groove (13), pressure-bearing pipe (2) inside wall is provided with corresponding groove (22), adaptation groove (13) inner chamber communicates with each other with corresponding groove (22) inner chamber, adaptation groove (13), corresponding groove (22) inner chamber can be simultaneously supported in fagging (42).
9. The process for manufacturing a large-diameter seamless drill pipe according to any one of claims 1 to 8, wherein: the method comprises the following processing steps: s100, sleeving and positioning: aligning the pressure-bearing pipe (2) to the inner embedding groove (11) and pushing in, pushing the orientation rod (51) into the inner cavity of the through connecting hole (23), pushing the limiting plate (511) into the inner cavity of the sliding groove (24), pushing the extension plate (25) into the inner cavity of the settling groove (14), penetrating the connecting rod (61) through the abdicating hole (251), and pushing the clamping block (72) into the inner cavity of the guide groove (711); when the end wall of the pressure-bearing pipe (2) far away from the direction of the drill pipe main body (1) is coplanar with the end wall of the drill pipe main body (1) provided with the embedded groove (11), the pressure-bearing pipe (2) is stably positioned in the inner cavity of the embedded groove (11); s200, fixing the inner end: aligning and butting the opposite pulling piece (31) with the first through groove (12) and the second through groove (21), aligning and butting the end block (41) with the first accommodating groove (3121) and the second accommodating groove (3131) respectively, so that the side supporting plate (42) is butted into the inner cavities of the adapting groove (13) and the corresponding groove (22) simultaneously; then, fixing the position of the end block (41) relative to the counter-pulling piece (31) by a fixing piece (32), and fixing the position of the counter-pulling piece (31) relative to the drill pipe main body (1) and the pressure bearing pipe (2) by the fixing piece (32) so as to fixedly connect the pressure bearing pipe (2) with the drill pipe main body (1); s300, fixing the outer end: screwing the rod body threads of the clamping piece (52) into the positioning groove (512), so that the end head of the clamping piece (52) is simultaneously abutted against the directional rod (51) and the pressure-bearing pipe (2); screwing the locking piece (62) on the outer edge of the connecting rod (61) in a threaded manner; and the rod body of the tightening bolt (81) penetrates through the fixing block (71) and the clamping block (72) at the same time, and then the tightening nut (82) is screwed on the outer edge of the rod body of the tightening bolt (81).
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| CN202110114082.2A CN112878924B (en) | 2021-01-27 | 2021-01-27 | Large-diameter seamless drill pipe and processing technology thereof |
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| CN202110114082.2A CN112878924B (en) | 2021-01-27 | 2021-01-27 | Large-diameter seamless drill pipe and processing technology thereof |
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| CN112878924B CN112878924B (en) | 2024-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112282051A (en) * | 2020-10-24 | 2021-01-29 | 江苏南通三建集团股份有限公司 | Steel column installation structure capable of being installed quickly and process thereof |
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| CN112282051B (en) * | 2020-10-24 | 2022-07-12 | 江苏南通三建集团股份有限公司 | Steel column installation structure capable of being installed quickly and process thereof |
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|---|---|
| CN112878924B (en) | 2024-04-02 |
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