CN112878924B - Large-diameter seamless drill pipe and processing technology thereof - Google Patents
Large-diameter seamless drill pipe and processing technology thereof Download PDFInfo
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- CN112878924B CN112878924B CN202110114082.2A CN202110114082A CN112878924B CN 112878924 B CN112878924 B CN 112878924B CN 202110114082 A CN202110114082 A CN 202110114082A CN 112878924 B CN112878924 B CN 112878924B
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- 238000005516 engineering process Methods 0.000 title abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Classifications
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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, wherein the large-diameter seamless drill pipe comprises a drill pipe main body, an inner caulking 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 caulking groove, 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 piece, wherein the positioning rod is positioned in the embedded groove, a communicating hole is formed in the end wall of the pressure-bearing pipe in the length direction in a penetrating mode, a positioning groove is formed in the end wall of the positioning rod, which is far away from the main body direction of the drill pipe, the rod body of the clamping piece is in threaded fit in the positioning groove, and the end head of the clamping piece is simultaneously abutted against the positioning rod and the pressure-bearing pipe; the processing technology of the large-diameter seamless drill pipe comprises the following steps: the sleeve is positioned, the inner end is fixed and the outer end is fixed. The stability that this application had effective guarantee drill pipe main part used for a long time, and the effect of the quick pressure-bearing pipe of installation and dismantlement in drill pipe main part inner chamber of operating personnel of being convenient for.
Description
Technical Field
The application relates to the field of seamless drill pipes, in particular to a large-diameter seamless drill pipe and a processing technology thereof.
Background
The seamless drill pipe is a steel pipe for geological drilling and is mostly used with drilling equipment. 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 in the drilling process, the output end of the drilling equipment drives the seamless drill pipe to drill into the geological interior. And then, the guiding drill bit is retracted to enable the seamless drill pipe to be unlocked at the outer edge of the output end of the drilling equipment, and the seamless drill pipe is fixed inside the geological layer for subsequent use after the output end of the drilling equipment is pulled out of the geological layer.
Chinese patent publication No. CN105247159a discloses a shale drill pipe comprising a main pipe body and two tool joints. The two tool joints are respectively positioned at two ends of the length direction of the main pipe body, and a thickening part is arranged at one end of the main pipe body, which is close to the direction of the tool joints. The thickening portion is used for fixedly connecting the main pipe body and the tool joint, so that the strength and the stability of the main pipe body in the subsequent use process are ensured while the drilling probe is guaranteed to have high penetration rate in the geological layer.
With respect to the related art, the inventor considers that the large-diameter seamless drill pipe is positioned in the geological layer and is easy to cause abrasion of the inner wall of the drill pipe to different degrees after long-time use, and the increase of the abrasion quantity of the inner wall of the drill pipe is easy to influence the integral strength of the drill pipe, so that the defect of stability in use of the drill pipe in a subsequent stage is overcome.
Disclosure of Invention
In order to solve the problem that the abrasion of the inner wall of the large-diameter seamless drill pipe easily affects the service stability of the drill pipe, the application provides the large-diameter seamless drill pipe.
The application provides a large diameter seamless drill pipe adopts following technical scheme:
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 arranged between the pressure-bearing pipe and the drill pipe main body; the positioning assembly comprises a positioning rod and a clamping piece, wherein the positioning rod is positioned in the embedded groove and extends along the length direction of the drill pipe main body; the end wall of the pressure-bearing pipe in the length direction penetrates through a communicating hole which is convenient for the positioning rod to be propped in, a positioning groove is formed in the end wall of the positioning rod in the direction away from the drill pipe main body, the rod body of the clamping piece is in threaded fit in the positioning groove, and the end head of the clamping piece is simultaneously propped against the positioning rod and the pressure-bearing pipe.
By adopting the technical scheme, after the pressure-bearing pipe is worn for a long time in the inner cavity of the drill pipe main body to a certain extent, an operator can screw the clamping piece to separate the rod body from the inner cavity of the positioning groove, and then the pressure-bearing pipe can be separated from the embedded groove by pulling the pressure-bearing pipe; then, an operator can prop the standby pressure-bearing pipe into the inner cavity of the embedded groove, and along with the propping of the orientation rod into the inner cavity of the communicating hole, the operator can screw the rod body of the clamping piece into the positioning groove, and the end head of the clamping piece is propped against the orientation rod and the pressure-bearing pipe at the same time, so that the position stability of the new pressure-bearing pipe in the embedded groove is ensured; the pressure bearing strength of the inner cavity of the drill pipe main body is guaranteed by replacing the pressure bearing pipe, so that the stability of the drill pipe main body in the subsequent use process is effectively guaranteed.
Preferably, the outer edge of the orientation rod is provided with a plurality of limiting plates, and the end wall of the length direction of the pressure-bearing pipe and the position of the communicating hole are provided with sliding grooves which are convenient for the limiting plates to prop in a penetrating manner.
Through adopting above-mentioned technical scheme, when the steering column supports into the communicating hole inner chamber, the limiting plate supports into the groove inner chamber that slides, and then provides the side direction holding power to the pressure-bearing pipe through the limiting plate to guarantee the position stability of pressure-bearing pipe in the inner caulking groove inner chamber, reduce the pressure-bearing pipe and appear loosening and shaking, the phenomenon of biasing to the drill pipe main part relatively.
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 sedimentation tank which is convenient for the extension plates to prop in.
By adopting the technical scheme, the extension plate is propped into the inner cavity of the settling tank, so that the position stability of the end of the pressure-bearing pipe and the drill pipe main body in the length direction is ensured, and the connection strength of the pressure-bearing pipe and the drill pipe main body after being fixed is further effectively improved.
Preferably, a connecting component is arranged between the extension plate and the drill pipe main body, and the connecting component comprises a connecting rod and a locking piece; the connecting rod is located the subsider, the extension board roof runs through and is provided with the hole of stepping down that is convenient for the connecting rod to pass, locking 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 position of extension board relative to the subsider, the locking piece screws up at the 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 the limiting assembly comprises a fixed block and a clamping block; the fixing block is positioned on the end wall of the drill pipe main 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 side wall of the fixed block, which is far away from the main body direction of the drill pipe, is provided with a guide groove which is convenient for the clamping block to prop in.
Through adopting above-mentioned technical scheme, after the pressure-bearing pipe supports into the embedded groove inner chamber completely, the one end of block length direction supports into the guide way inner chamber, and then makes the position stability of pressure-bearing pipe relative drill pipe main part be further improved to further reduced the pressure-bearing pipe and had appeared the phenomenon of loose shake, the deviation relative drill pipe main part, improved the stability in use of pressure-bearing pipe in drill pipe main part inner chamber.
Preferably, a converging part is arranged between the fixed block and the clamping block, and the converging part comprises a converging bolt and a converging nut; the rod body of the converging bolt simultaneously penetrates through the fixing block and the clamping block, and the converging nut is in threaded fit with the outer edge of the rod body of the converging bolt.
Through adopting above-mentioned technical scheme, the body of rod of the bolt of closing can run through fixed block and block simultaneously, and the nut of closing can screw up at the body of rod outer fringe screw thread of the bolt of closing, and then with make fixed block and block fixed connection, 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 the stabilizing assembly comprises a counter-pulling piece and a fixing piece; the opposite pulling piece comprises a connecting plate, a first clamping arc plate and a second clamping arc plate, and 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 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 the inner cavity of the second through groove, the opposite-pulling piece can be abutted to the inner cavities of the first through groove and the second through groove at the same time, and the fixing piece is used for fixedly connecting the opposite-pulling piece, the drill pipe body and the pressure-bearing pipe.
By adopting the technical scheme, after the opposite pulling piece is propped into the inner cavities of the first through groove and the second through groove, the pressure-bearing pipe and the drill pipe main body are fixedly connected into a whole at the joint of the two; the fixing piece is fixedly connected with the opposite-pull piece and the drill pipe main body and the pressure-bearing pipe, so that the connection strength of the pressure-bearing pipe and the drill pipe main body is further improved.
Preferably, a supporting component is arranged between the first clamping arc plate and the second clamping arc plate, and the supporting component 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 which is convenient for the end blocks to be propped in is formed in the outer side wall of the first clamping arc plate, and a second accommodating groove which is convenient for the end blocks to be propped in is formed in the outer side wall of the second clamping arc plate; the inner side wall of the drill pipe main body is provided with an adapting groove, the inner side wall of the pressure-bearing pipe is provided with a corresponding groove, the inner cavity of the adapting groove is communicated with the inner cavity of the corresponding groove, and the side supporting plate can simultaneously prop into the adapting groove and the inner cavity of the corresponding groove.
By adopting the technical scheme, the end blocks can respectively prop into the inner cavities of the first accommodating groove and the second accommodating groove, and the side supporting plates can simultaneously prop into the inner cavities of the adapting groove and the corresponding grooves, so that the first clamping arc plates and the second clamping arc plates are fixedly connected; 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 opposite-pulling piece to the pressure-bearing pipe and the drill pipe main body.
In a second aspect, the present application provides a process for machining a large diameter seamless drill pipe in order to improve the problem of inconvenience in machining a pressure-bearing pipe in the inner cavity of the drill pipe body.
The processing technology of the large-diameter seamless drill pipe provided by the application comprises the following processing steps:
s100, positioning the suit: aligning the pressure-bearing pipe with the embedded groove and propping in, propping the directional rod into the inner cavity of the communicating hole, propping the limiting plate into the inner cavity of the sliding groove, propping the extension plate into the inner cavity of the settling tank, allowing the connecting rod to pass through the abdicating hole, and propping the clamping block into the inner cavity of the guiding groove; when the end wall of the pressure-bearing pipe in the direction away from the drill pipe main body is coplanar with the end wall of the embedded groove formed in the drill pipe main body, the pressure-bearing pipe is stably positioned in the inner cavity of the embedded groove;
s200, fixing the inner end: aligning the opposite pulling piece with the first through groove and the second through groove and propping in, and aligning the end block with the first accommodating groove and the second accommodating groove and propping in, so that the side supporting plates are propped in the inner cavities of the adapting groove and the corresponding groove at the same time; then, fixing the position of the end block relative to the opposite pulling piece by using a fixing piece, and fixing the position of the opposite 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 an 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; the rod body of the converging bolt simultaneously penetrates through the fixing block and the clamping block, and then the converging nut is screwed on the outer edge of the rod body of the converging bolt.
Through adopting above-mentioned technical scheme, operating personnel can be quick, convenient with pressure-bearing pipe fixed mounting in drill pipe main part inner chamber to the operating personnel of being convenient for dismantle old pressure-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 pressure-bearing pipe, so that the stability of the drill pipe main body in the subsequent use process is effectively guaranteed;
2. the opposite-pulling piece is simultaneously propped into the inner cavities of the first through groove and the second through groove, and the opposite-pulling piece, the drill pipe main body and the pressure-bearing pipe are fixedly connected through the fixing piece, so that the connection strength and stability of the pressure-bearing pipe and the drill pipe main body are improved, and the use stability of the pressure-bearing pipe in the inner cavity of the drill pipe main body is further ensured.
Drawings
FIG. 1 is a schematic structural view of a large diameter seamless drill pipe according to an embodiment of the present application;
FIG. 2 is a schematic illustration of the connection of a drill pipe body and a pressure bearing pipe;
FIG. 3 is an exploded view of the drill pipe body, pressure containing pipe and pull-to-pull connection;
FIG. 4 is an exploded view of the attachment of the side gussets and the counter pull;
FIG. 5 is an exploded view of the directional rod, fastener and drill pipe body positional relationship;
fig. 6 is an exploded view of the connection of the drill pipe body and the pressure bearing pipe.
Reference numerals illustrate: 1. a drill pipe body; 11. an embedded groove; 12. a first through groove; 13. an adaptation groove; 14. a settling tank; 2. a pressure-bearing pipe; 21. a second through slot; 22. a corresponding groove; 23. communicating the communicating hole; 24. a slip groove; 25. an extension plate; 251. a relief hole; 3. a stabilizing assembly; 31. a pair of pull members; 311. a connecting plate; 312. the first clamping arc plate; 3121. a first receiving groove; 313. the second clamping arc plate; 3131. a second accommodating groove; 32. a fixing member; 4. a support assembly; 41. an end block; 42. a side support plate; 5. a positioning assembly; 51. a directional rod; 511. a limiting plate; 512. a positioning groove; 52. a clamping piece; 6. a connection assembly; 61. a connecting rod; 62. a locking member; 7. a limit component; 71. a fixed block; 711. a guide groove; 72. a clamping block; 8. a converging member; 81. a binding bolt; 82. and (5) converging the nut.
Detailed Description
The present application is described in further detail below in conjunction with 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 large-diameter seamless steel pipe, and operators can enter the inner cavity of the drill pipe main body 1 to work. The end wall of the length direction one end of the drill pipe body 1 is provided with an embedded groove 11 around the periphery of the through hole thereof, the embedded groove 11 is arranged to extend along the length direction of the drill pipe body 1, and the length dimension of the embedded groove 11 is smaller than the length dimension of the drill pipe body 1.
Referring to fig. 1, a drill pipe body 1 is provided with a pressure-bearing pipe 2 in an inner cavity of an embedded groove 11, and the outer circumferential dimension of the pressure-bearing pipe 2 is adapted to the inner diameter dimension of the embedded groove 11. After the pressure-bearing pipe 2 is completely propped into 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 main body 1, and the end wall of the pressure-bearing pipe 2 in the direction away from the embedded groove 11 is positioned on the same longitudinal surface as the end wall of the drill pipe main body 1, on which the embedded groove 11 is formed.
Referring to fig. 2, a stabilizing assembly 3 is commonly arranged between a drill pipe body 1 and a pressure-bearing pipe 2, and the stabilizing assembly 3 is positioned in the inner cavity of the drill pipe body 1 so as to preliminarily fix the drill pipe body 1 and the pressure-bearing pipe 2. The stabilizing assembly 3 comprises a counter-pull 31 and a fixing 32, the fixing 32 being a bolt in this embodiment. The opposite pulling piece 31 comprises 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 welded at two ends of the connecting plate 311 in the length direction. The first clamping arc plate 312 is an arc plate with an outer diameter radian matched with an inner diameter radian of the drill pipe main body 1, the second clamping arc plate 313 is an arc plate with an outer diameter radian matched with an inner diameter radian of the pressure-bearing pipe 2, and the length sizes of the first clamping arc plate 312 and the second clamping arc plate 313 are both larger than the width size of the 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 main body 1 and located at the embedded groove 11, an inner cavity of the first through groove 12 is communicated with an inner cavity of the embedded groove 11, and an inner cavity of the first through groove 12 is convenient for the first clamping arc plate 312 and one end, close to the direction of the first clamping arc plate 312, of the connecting plate 311 to abut into. The inner side wall of the pressure-bearing pipe 2 and one end of the pressure-bearing pipe in the length direction are provided with second through grooves 21 which are equal to the first through grooves 12 in number, and after the pressure-bearing pipe 2 is completely propped into the inner cavity of the embedded groove 11, the first through grooves 12 and the second through grooves 21 which are mutually close to each other are mutually symmetrical and the inner cavities are communicated.
Referring to fig. 4, a supporting component 4 is commonly disposed between the first clamping arc plate 312 and the second clamping arc plate 313, and the supporting component 4 is used for improving the connection strength between the pressure-bearing pipe 2 and the drill pipe main body 1. The support assembly 4 includes end blocks 41 and side support plates 42, the end blocks 41 are welded perpendicularly to both ends of the side support plates 42 in the length direction, and the length dimension of the end blocks 41 is larger than the width dimension of the side support plates 42.
Referring to fig. 4, a first receiving groove 3121 is provided on a side wall of the first clamping arc plate 312 in a direction away from the drill pipe body 1, and an inner diameter size of the first receiving groove 3121 is adapted to an outer circumferential size of the end block 41. The second clamping arc plate 313 is provided with a second accommodating groove 3131 on the side wall far away from the pressure-bearing pipe 2, and the inner diameter size of the second accommodating groove 3131 is also matched with the outer circumference size of the end block 41. An adapting groove 13 is arranged on the inner side wall of the drill pipe main body 1 and positioned at the first through groove 12, and the inner cavity of the adapting groove 13 is communicated with the 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 cavities of the second through groove 21. After the pressure-bearing pipe 2 is completely abutted into the inner cavity of the embedded groove 11, the mutually adjacent adapting groove 13 and the corresponding groove 22 are mutually symmetrical and the inner cavity is communicated.
Referring to fig. 2 and 4, the operator can simultaneously push the opposite pull member 31 into the inner cavities of the first through slot 12 and the second through slot 21, at this time, one end of the first clamping arc plate 312 and the connecting plate 311 near the first arc plate direction pushes into the inner cavity of the first through slot 12, and one end of the second clamping arc plate 313 and one end of the connecting plate 311 near the second clamping arc plate 313 pushes into the inner cavity of the second through slot 21. Thereafter, the operator can simultaneously push the side support plate 42 into the inner cavities of the adapting groove 13 and the corresponding groove 22, and the end block 41 is positioned in the inner cavities of the first accommodating groove 3121 and the second accommodating groove 3131 respectively. The operator can run through the connecting plate 311 and screw the rod body of the fixing member 32 into the preset screw grooves of the inner side walls of the first through groove 12 and the second through groove 21, run through the end block 41 and the first clamping arc plate 312 at the same time and screw the rod body of the fixing member 32 into the preset screw groove of the inner side wall of the drill pipe main body 1, and run through the end block 41 and the second clamping arc plate 313 and screw the rod body of the fixing member 32 into the preset screw groove of the inner side wall 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 makes the opposite pulling piece 31 fixed in the inner cavities of the first through groove 12 and the second through groove 21 at the same time, and makes the pressure-bearing pipe 2 and the drill pipe main body 1 fixed as a whole at the joint.
Referring to fig. 5 and 6, a positioning component 5 and a limiting component 7 are also arranged between the pressure-bearing pipe 2 and the drill pipe main body 1 together so as to further improve the connection strength of the pressure-bearing pipe 2 and the drill pipe main body 1. The positioning assembly 5 comprises a directional rod 51 and a catch 52, in this embodiment a bolt, the catch 52. The directional rod 51 is welded in the inner cavity of the embedded groove 11, the directional rod 51 extends along the length direction of the drill pipe main body 1, and the end wall of the directional rod 51 far away from the embedded groove 11 is located on the same longitudinal surface with the end wall of the drill pipe main body 1 where the embedded groove 11 is formed.
Referring to fig. 5 and 6, the outer edge of the directional rod 51 and the two radial ends thereof are respectively integrally formed with a limiting plate 511, the end wall of the pressure-bearing tube 2 in the length direction is provided with a through hole 23 in a penetrating manner along the extending direction, the end wall of the pressure-bearing tube 2 in the length direction and the two radial ends of the through hole 23 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 propped into the inner cavity of the embedded groove 11, the directional rod 51 is propped into the inner cavity of the communicating hole 23, and the limiting plate 511 is propped into the inner cavity of the sliding groove 24, so that the position stability of the pressure-bearing pipe 2 in the inner cavity of the drill pipe main body 1 is improved.
Referring to fig. 5 and 6, the end wall of the orientation rod 51 in the direction away from the drill pipe body 1 is provided with a positioning groove 512, and the positioning groove 512 is a screw groove. The operator can screw the rod of the fastener 32 into the positioning groove 512. At this time, the ends of the fixing member 32 are simultaneously abutted against the directional rod 51 and the bearing tube 2, so as to be matched with the stabilizing assembly 3, and simultaneously limit the positions of the two ends of the bearing tube 2 in the length direction, and further improve the connection strength of the bearing tube 2 and the drill tube main body 1.
Referring to fig. 5 and 6, extension plates 25 are integrally formed at the outer edge of the pressure-bearing pipe 2 and at the radial ends thereof, respectively, the end wall of the drill pipe body 1 in the direction of the embedded groove 11 is provided with a number of settling grooves 14 equivalent to the number of the extension plates 25, and the inner diameter size of the settling grooves 14 is adapted to the outer peripheral size of the extension plates 25. When the pressure-bearing pipe 2 is completely abutted into the inner cavity of the embedded groove 11, the extension plate 25 is abutted into the inner cavity of the sedimentation groove 14, and the side wall of the extension plate 25 in the direction away from 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 connection assembly 6 is commonly provided between the extension plate 25 and the drill pipe body 1, the connection assembly 6 including a connection rod 61 and a locking member 62. In this embodiment, the connecting rod 61 is a screw rod welded perpendicularly to the inner bottom wall of the settler 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, and when the extension plate 25 is abutted 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 as to fix the extension plate 25 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 an end wall of the drill pipe body 1 where the embedded groove 11 is formed, and a guide groove 711 is provided on a side wall of the fixing block 71 in a direction away from the drill pipe body 1. The clamping block 72 is vertically welded to the end wall of the pressure-bearing pipe 2 in the direction away from the stabilizing assembly 3, and one end of the clamping block 72 in the length direction extends to the outside of the drill pipe body 1. When the bearing pipe 2 is completely abutted into the inner cavity of the embedded groove 11, one end of the clamping block 72 away from the bearing pipe 2 can be abutted into the inner cavity of the guide groove 711, so as to further improve the connection strength and the position stability of the bearing pipe 2 and the drill pipe main body 1.
Referring to fig. 6, a binding member 8 is commonly provided between the fixing block 71 and the engaging block 72, and the binding member 8 is used for fixedly connecting the fixing block 71 and the engaging block 72. The beam-converging part 8 comprises a beam-converging bolt 81 and a beam-converging nut 82, wherein the rod body of the beam-converging bolt 81 can penetrate through the fixed block 71 and the clamping block 72 at the same time, and the beam-converging nut 82 can be screwed tightly on the outer edge of the rod body of the beam-converging bolt 81, so that the connection strength of the fixed block 71 and the clamping block 72 is ensured, 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 provided by 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, the operator can remove the counter-pull 31 from the connection of the pressure bearing pipe 2 and the drill pipe body 1 by screwing the fixing member 32. Thereafter, the binding nut 82 is screwed to be separated from the rod body of the binding bolt 81, and the binding bolt 81 is pulled away from the fixing block 71 and the engaging block 72. The locking piece 52 is screwed and separated from the outer edge of the directional rod 51, the locking piece 62 is screwed and separated from the outer edge of the connecting rod 61, then an operator can pull the pressure-bearing pipe 2 out of the embedded groove 11 and push the standby pressure-bearing pipe 2 into the embedded groove 11 to be fixed, so that the pressure-bearing strength of the inner wall of the drill pipe main body 1 is ensured, and the stability of the drill pipe main body 1 in the subsequent use process is further ensured.
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, positioning the suit: the operator can align the pressure-bearing pipe 2 with the embedded groove 11 and push in, at this time, the directional rod 51 can push in the inner cavity of the through hole 23, and the limiting plate 511 can push in the inner cavity of the sliding groove 24. After the pressure-bearing pipe 2 is completely abutted into the inner cavity of the embedded groove 11, the end wall of the pressure-bearing pipe 2 in the direction away from the drill pipe main body 1 is coplanar with the end wall of the embedded groove 11 formed in the drill pipe main body 1, the extension plate 25 can be completely abutted into the inner cavity of the settling tank 14, the connecting rod 61 passes through the relief hole 251 and extends to the outside of the extension plate 25, the clamping block 72 is abutted into the inner cavity of the guide groove 711, and the position of the pressure-bearing pipe 2 relative to the drill pipe main body 1 is primarily limited.
S200, fixing the inner end: an operator can align the opposite pulling piece 31 with the first through groove 12 and the second through groove 21 and push in, at this time, one end of the first clamping arc plate 312 and the connecting plate 311 close to the first arc plate direction pushes in the inner cavity of the first through groove 12, and one end of the second clamping arc plate 313 and the connecting plate 311 close to the second clamping arc plate 313 pushes in the inner cavity of the second through groove 21. Then, the operator can press the end block 41 into the corresponding first receiving groove 3121 and second receiving groove 3131, respectively, and press the side support plate 42 into the inner cavities of the fitting groove 13 and the corresponding groove 22 at the same time.
Then, the operator can thread the rod body of the fixing member 32 through the connecting plate 311 and into the preset thread grooves of 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 into the preset thread groove of the inner side wall of the drill pipe main 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 into the preset thread groove of the inner side wall 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 an outer end: an operator can screw the rod body 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. Then, the locking piece 62 is screwed on the outer edge of the connecting rod 61, the rod body of the converging bolt 81 simultaneously penetrates through the fixing block 71 and the clamping block 72, and the converging nut 82 is screwed on the outer edge of the rod body of the converging bolt 81, so that the connection strength and stability of the pressure-bearing pipe 2 and the drill pipe main body 1 are further improved.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (4)
1. A large diameter seamless drill pipe comprising a drill pipe body (1), characterized in that: an 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 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); the positioning assembly (5) comprises a directional rod (51) and a clamping piece (52), the directional rod (51) is positioned in the embedded groove (11), and the directional rod (51) is arranged in an extending mode along the length direction of the drill pipe main body (1); the end wall of the pressure-bearing pipe (2) in the length direction penetrates through a communicating hole (23) which is convenient for the directional rod (51) to prop in, a positioning groove (512) is formed in the end wall of the directional rod (51) away from 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 head of the clamping piece (52) is simultaneously propped against the directional rod (51) and the pressure-bearing pipe (2); the outer edge of the orientation rod (51) is provided with a plurality of limit plates (511), and a sliding groove (24) which is convenient for the limit plates (511) to prop in is arranged at the end wall of the pressure-bearing pipe (2) in the length direction and is positioned at the position of the communicating hole (23) in a penetrating way; 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 sedimentation tank (14) which is convenient for the extension plates (25) to prop in; a connecting component (6) is arranged between the extension plate (25) and the drill pipe main body (1), and the connecting component (6) comprises a connecting rod (61) and a locking piece (62); the connecting rod (61) is positioned in the sedimentation tank (14), a yielding hole (251) which is convenient for the connecting rod (61) to pass through is formed in the top wall of the extension plate (25) in a penetrating way, and the locking piece (62) is in threaded fit with the outer edge of the connecting rod (61); a limiting assembly (7) is arranged between the drill pipe main body (1) and the pressure-bearing pipe (2), and the limiting assembly (7) comprises a fixed 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 fixed block (71) far away from the drill pipe main body (1) is provided with a guide groove (711) which is convenient for the clamping block (72) to prop in; 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 pull piece (31) and a fixing piece (32); the opposite-pull 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 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 opposite-pulling piece (31) is simultaneously abutted to the inner cavities of the first through groove (12) and the second through groove (21), and the fixing piece (32) is used for fixedly connecting the opposite-pulling piece (31) with the drill pipe body (1) and the pressure-bearing pipe (2).
2. A large diameter seamless drill pipe according to claim 1, wherein: a converging piece (8) is arranged between the fixed block (71) and the clamping block (72), and the converging piece (8) comprises a converging bolt (81) and a converging nut (82); the rod body of the converging bolt (81) simultaneously penetrates through the fixed block (71) and the clamping block (72), and the converging nut (82) is in threaded fit with the outer edge of the rod body of the converging bolt (81).
3. A large diameter seamless drill pipe according to claim 2, wherein: a supporting component (4) is arranged between the first clamping arc plate (312) and the second clamping arc plate (313), and the supporting component (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 plates (42) in the length direction, a first accommodating groove (3121) which is convenient for the end blocks (41) to be propped in is formed in 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 be propped in is formed in the outer side wall of the second clamping arc plate (313); the drill pipe is characterized in that an adaptation groove (13) is formed in the inner side wall of the drill pipe body (1), a corresponding groove (22) is formed in the inner side wall of the pressure-bearing pipe (2), the inner cavity of the adaptation groove (13) is communicated with the inner cavity of the corresponding groove (22), and the side supporting plates (42) simultaneously butt against the inner cavities of the adaptation groove (13) and the corresponding groove (22).
4. A process for machining a large-diameter seamless drill pipe according to claim 3, wherein: the method comprises the following processing steps: s100, positioning the suit: the pressure-bearing pipe (2) is aligned with the embedded groove (11) and is propped in, the directional rod (51) is propped in the inner cavity of the communicating hole (23), the limiting plate (511) is propped in the inner cavity of the sliding groove (24), the extension plate (25) is propped in the inner cavity of the settling groove (14), the connecting rod (61) passes through the yielding hole (251), and the clamping block (72) is propped in the inner cavity of the guiding 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 embedded groove (11) formed in the drill pipe main body (1), the pressure-bearing pipe (2) is stably positioned in the inner cavity of the embedded groove (11); s200, fixing the inner end: aligning the opposite pulling piece (31) with the first through groove (12) and the second through groove (21) and propping in, and aligning the end block (41) with the first accommodating groove (3121) and the second accommodating groove (3131) and propping in respectively, so that the side supporting plate (42) is propped in 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 opposite-pulling piece (31) by a fixing piece (32), and fixing the position of the opposite-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) and the drill pipe main body (1); s300, fixing an 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); the rod body of the converging bolt (81) simultaneously penetrates through the fixed block (71) and the clamping block (72), and then the converging nut (82) is screwed on the outer edge of the rod body of the converging 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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| 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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| EP0087917A1 (en) * | 1982-02-24 | 1983-09-07 | Dualco Manufacturing Ltd. | Drilling apparatus |
| CA2316467A1 (en) * | 2000-08-16 | 2002-02-16 | Ryan Energy Technologies Inc. | Dynamic pressure device for oil drill systems |
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