CN208040323U - High anti-twisting drill pipe joint - Google Patents
High anti-twisting drill pipe joint Download PDFInfo
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- CN208040323U CN208040323U CN201820485737.0U CN201820485737U CN208040323U CN 208040323 U CN208040323 U CN 208040323U CN 201820485737 U CN201820485737 U CN 201820485737U CN 208040323 U CN208040323 U CN 208040323U
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- hollow
- thread end
- circular bead
- helicla flute
- joint body
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Abstract
The utility model belongs to drilling tool technical field.Traditional tool joint stress concentration phenomenon is extremely serious, affects the performance of oil drill rocker.For the problems of the prior art, the utility model discloses a kind of high anti-twisting drill pipe joint, including joint body and box thread end and the male thread end at joint body both ends are set；The inner thread piece of box thread end includes circular bead surface in the first outer circular bead surface, long straight cylinder hole, internal thread, Surface of Sphere and first, and the external thread piece of male thread end includes circular bead surface, spherical surface, stress-relief groove, external screw thread, cylindrical surface and the second outer circular bead surface in second；The surface of box thread end is equipped with the first hollow cylinder and the first hollow positive gengon successively, and the surface of male thread end is equipped with the second hollow positive gengon and the second hollow cylinder successively.The utility model is simple in structure, can effectively reduce the stress concentration of tool joint, improve its torsional property.
Description
Technical field
The utility model is related to a kind of tool joints, and in particular to a kind of high anti-twisting drill pipe joint belongs to drilling tool skill
Art field.
Background technology
In oil drilling, drilling rod not only connects Surface power drive equipment and down-hole equipment, while being also the logical of drilling fluid transmission
Road, and drilling rod is connected often through tool joint.Traditional tool joint is usually the structure type according to API standard defined
It is produced, in high angle hole and Horizontal Well Drilling into the process, it is multiple that tool joint can bear torsion, tension and compression, bending, vibration etc.
Close load, connector maximum stress is larger, and stress concentration phenomenon is extremely serious, this can not only influence oil drill rocker operating efficiency and
Performance, and the most active force that plus load generates all is undertaken by several teeth before threaded portion, it is easy to it sends out
Raw failure accidents, are not suitable for complicated oil gas well mining.
Utility model content
For the problems of the prior art, the utility model provides a kind of high anti-twisting drill pipe joint, to reduce answering for connector
Power concentrates situation, improves its torsional property.
For the above technical purpose of realization, the technical solution of the utility model is：
A kind of high anti-twisting drill pipe joint, including joint body and the box thread end at joint body both ends and public spiral shell are set
Line end, the joint body inner hollow setting, the box thread end includes inner thread piece, and the inner thread piece includes hanging down
Directly in the first axial outer circular bead surface, axially extending long straight cylinder hole, internal thread, circular bead surface in Surface of Sphere and first successively；
The male thread end includes external thread piece, and the external thread piece coordinates with inner thread piece, and external thread piece includes perpendicular to axial direction
Second in circular bead surface, stress-relief groove, successively axially extending spherical surface, external screw thread, cylindrical surface and the second between outer land
Shoulder face, the stress-relief groove are located in second between circular bead surface and spherical surface, and the cylindrical surface forms circle with Surface of Sphere
Spherical surface/cylindrical surface sealing；The surface of the box thread end is equipped with the first hollow cylinder, the first hollow positive gengon successively,
The circumcircle of first hollow positive gengon is identical as the outer diameter of the first hollow cylinder；The surface of the male thread end is set successively
There are the second hollow positive gengon, the second hollow cylinder, the circumcircle of the second hollow positive gengon and the second hollow cylinder
Outer diameter is identical.The utility model can effectively reduce drilling rod connecting by the way that a stress-relief groove is arranged in external screw thread shoulder transition position
The stress concentration of head, improves its torsional property, and the cylindrical on the Surface of Sphere and external thread piece on inner thread piece
At dot encapsulation drilling rod gas sealing ability can be made to be significantly improved；In addition, by male thread end and box thread end
Hollow positive gengon is arranged in surface, can prevent the jaw of the hydraulic tongs in upper button and shackle from sliding, and can reduce pincers tooth and sting
The joints wear that localized metallic deforms at conjunction can be subtracted by the hollow cylinder being arranged and hollow positive gengon coordinates
The abrasion of few hollow positive gengon, extends the service life of tool joint.
Preferably, the external thread piece preceding 3 pitch threads of circular bead surface in second clip H2, H2=respectively
0.8~1.5mm.In the thread stress of tool joint, it is most that first three tooth undertakes load, by by external thread piece close to outer
Preceding 3 pitch threads of circular bead surface, which clip one section of tooth height, can reduce the stress of first three tooth, so that subsequent thread is shared etc. more
Stress further decreases stress concentration phenomenon.
Preferably, the outer surface of the joint body be equipped with the first helicla flute and the second helicla flute, described first
Helicla flute is located at joint body close to male thread end one end, and second helicla flute is located at joint body close to box thread end
One end, the helix angle and groove depth of the second helicla flute are less than the first helicla flute.By the way that two sections of helicla flutes are arranged on joint body,
It can make connector that can also form strong eddy flow in well while with linkage function, improve the lifting energy of Transport of Drilling Cutting In A
Power, to improve the elimination efficiency of drilling rod Cutting Disposal.
As further preferred scheme, the helix angle of first helicla flute is 68~72 °, second helicla flute
Helix angle is 48~52 °.
Preferably, the outer surface of the joint body is equipped with composite sheet, and composite sheet is semi-cylindrical hill.This is compound
Piece can not only expand the contact surface of joint body and landwaste, increase the frictional force of connector and landwaste, improve the removing to landwaste
Ability, moreover it is possible to prevent landwaste joint wear ontology, the service life of extending connector.
Preferably, the described first hollow positive gengon and the second hollow positive gengon are 4,6,8,10,12 side bodies
Any one in structure.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the external thread piece and inner thread piece in the utility model；
Fig. 3 is the partial enlarged view of external thread piece in the utility model；
Fig. 4 is the partial enlarged view of external thread piece in the utility model；
Partial enlarged view when Fig. 5 is external thread piece and inner thread piece cooperation in the utility model；
Reference numeral：
100. 101. first 102. second helicla flute of helicla flute, 103. composite sheet of joint body, 200. box thread end 210.
Circular bead surface in 211. first 212. long 213. internal thread of straight cylinder hole of outer circular bead surface of inner thread piece, 214. Surface of Sphere 215. first
Platform in 220. first 230. first hollow 300. male thread end of positive gengon of hollow cylinder, 310. external thread piece 311. second
316. second outer circular bead surface 320. second of shoulder face 312. stress-relief groove, 313. spherical surface, 314. external screw thread, 315. cylindrical surface
330. second hollow positive gengon of hollow cylinder
Specific implementation mode
In conjunction with Fig. 1 to Fig. 5, a specific embodiment of the utility model is described in detail, but not to the power of the utility model
Profit requires to do any restriction.
As shown in Figure 1 and Figure 5, a kind of high anti-twisting drill pipe joint, including joint body 100 and setting are in joint body 100
The box thread end 200 and male thread end 300 at both ends；
100 inner hollow of the joint body is arranged, and the outer surface of the joint body 100 is equipped with the first helicla flute 101
With the second helicla flute 102, first helicla flute 101 is located at joint body 100 close to 300 one end of male thread end, the first spiral shell
The helix angle of spin slot 101 is set as 68~72 °, so that landwaste is involved in the first helicla flute 101, second helicla flute
102 are located at joint body 100 close to 200 one end of box thread end, and the helix angle of the second helicla flute 102 is 48~52 °, and second
The helix angle and groove depth of helicla flute 102 are less than the first helicla flute 101, so that the second helicla flute 102 will be involved in the first spiral
The landwaste of slot 101 is thrown away, and landwaste is enable more thoroughly to remove；For expand joint body and landwaste contact surface, increase connector with
The frictional force of landwaste improves the Scavenging activity to landwaste, and the outer surface of the joint body 100 is additionally provided with composite sheet 103, compound
Piece 103 is semi-cylindrical hill, which is also prevented from landwaste joint wear, the service life of extending connector.
The box thread end 200 includes inner thread piece 210, and the inner thread piece 210 includes perpendicular to axial first
Circular bead surface 215 in outer circular bead surface 211, successively axially extending long straight cylinder hole 212, internal thread 213 and first；The male thread
End 300 includes external thread piece 310, and the external thread piece 310 and inner thread piece 210 coordinate, external thread piece 310 include perpendicular to
Circular bead surface 311 in axial second, successively axially extending spherical surface 313, external screw thread 314, cylindrical surface 315 and second
Outer circular bead surface 316, wherein when external thread piece 310 and inner thread piece 210 coordinate, long straight cylinder hole 212 and cylindrical surface 315 it
Between gap be 1.5mm.
In order to reduce the stress concentration of tool joint, in described second between circular bead surface 311 and spherical surface 313
Equipped with stress-relief groove 312, wherein the radius of stress-relief groove 312 is R1, groove depth H1, R1=5mm, H1=1.2mm；For
Stress concentration phenomenon is further decreased, preceding 3 pitch threads of circular bead surface 311 in second of the external thread piece 310 are cut respectively
Remove H2, H2=1.2mm.
In order to improve the gas sealing ability of the drilling rod connected by tool joint, shoulder in the internal thread 213 and first
Surface of Sphere 214 is equipped between face 215, the radius of Surface of Sphere 214 is R2, and the center location of R2=3.8mm, Surface of Sphere 214 are A,
The distance of circular bead surface 215 is m, m=13mm, Surface of Sphere 214 and 315 shape of cylindrical surface in circle center distance internal thread 213 210 first
It is sealed at 214/ cylindrical surface 315 of Surface of Sphere, interference volume 0.2mm.
The surface of the box thread end 200 is equipped with first the 220, first hollow positive gengon 230 of hollow cylinder successively,
The first hollow positive gengon can be 4,6,8,10,12 side body structures, the circumcircle of the first hollow positive gengon 230 and the
The outer diameter of one hollow cylinder 220 is identical；The surface of the male thread end 300 successively be equipped with the second hollow positive gengon 330,
Second hollow cylinder 320, the second hollow positive gengon can be 4,6,8,10,12 side body structures, and second is hollow just more
The circumcircle of side body 330 is identical as the outer diameter of the second hollow cylinder 320.
In conclusion the utility model has the following advantages：
1. the utility model can effectively reduce tool joint by the way that a stress-relief groove is arranged in external screw thread shoulder transition position
Stress concentration, improve its torsional property；By reducing tooth of the external thread piece close to preceding 3 pitch threads of outer circular bead surface
Height can further decrease stress concentration phenomenon.
2. the utility model by the cylindrical on the Surface of Sphere and external thread piece on inner thread piece at dot encapsulation can
To significantly improve the gas sealing ability of the drilling rod connected by connector.
3. the utility model can be prevented by the way that hollow positive gengon is arranged in male thread end and box thread end surface
In upper button and shackle, the jaw of hydraulic tongs slides, and reduces the joints wear that localized metallic deforms at pincers tooth occlusion,
Pass through the hollow cylinder being arranged and hollow positive gengon coordinates, it is possible to reduce the abrasion of hollow positive gengon extends drilling rod connecting
The service life of head.
4. the utility model can make to connect by the way that the helicla flute of two sections of different groove depths and helix angle is arranged on joint body
Head can also provide more effective upward lift while with linkage function for drilling fluid, and it is clear that cooperation drilling rod can improve drilling rod
Except the elimination efficiency of cutting bed.Wherein, landwaste is involved in the first helicla flute first, and the first helicla flute can play guide functions,
Then landwaste enters in the second helicla flute, and the second helicla flute can be to raising speed into drilling fluid therein, and increases drilling well
The turbulence level of liquid realizes the quick migration of drilling fluid, to improve the elimination efficiency to cutting bed.
5. the utility model can not only expand the contact surface of joint body and landwaste by the way that composite sheet is arranged, increase connector
With the frictional force of landwaste, the Scavenging activity to landwaste is improved, moreover it is possible to prevent landwaste joint wear, the service life of extending connector.
It is understood that above with respect to the specific descriptions of the utility model, it is merely to illustrate the utility model and is not
It is limited to technical solution described in the utility model embodiment.It will be understood by those of ordinary skill in the art that still can be with
It modifies to the utility model or equivalent replacement, to reach identical technique effect；Needs are used as long as meeting, all in this reality
Within novel protection domain.
Claims (6)
1. a kind of high anti-twisting drill pipe joint, including joint body and it is arranged in the box thread end at joint body both ends and male thread
End, the joint body inner hollow setting, which is characterized in that the box thread end includes inner thread piece, the interior spiral shell
Line part include perpendicular to the first axial outer circular bead surface, axially extending long straight cylinder hole, internal thread, Surface of Sphere and first successively
Interior circular bead surface；The male thread end includes external thread piece, and the external thread piece coordinates with inner thread piece, and external thread piece includes hanging down
Directly in axial second circular bead surface, stress-relief groove, successively axially extending spherical surface, external screw thread, cylindrical surface and
Second outer circular bead surface, the stress-relief groove are located in second between circular bead surface and spherical surface, the cylindrical surface and ball
Face forms Surface of Sphere/cylindrical surface sealing；The surface of the box thread end successively be equipped with the first hollow cylinder, first it is hollow just
The circumcircle of gengon, the first hollow positive gengon is identical as the outer diameter of the first hollow cylinder；The table of the male thread end
Face is equipped with the second hollow positive gengon, the second hollow cylinder successively, the circumcircle of the second hollow positive gengon and second hollow
The outer diameter of cylinder is identical.
2. a kind of high anti-twisting drill pipe joint as described in claim 1, which is characterized in that external thread piece platform in second
Preceding 3 pitch threads in shoulder face clip H2, H2=0.8~1.5mm respectively.
3. a kind of high anti-twisting drill pipe joint as described in claim 1, which is characterized in that the outer surface of the joint body is equipped with
First helicla flute and the second helicla flute, first helicla flute are located at joint body close to male thread end one end, and described second
Helicla flute is located at joint body close to box thread end one end, and the helix angle and groove depth of the second helicla flute are less than the first spiral
Slot.
4. a kind of high anti-twisting drill pipe joint as claimed in claim 3, which is characterized in that the helix angle of first helicla flute
It it is 68~72 °, the helix angle of second helicla flute is 48~52 °.
5. a kind of high anti-twisting drill pipe joint as described in claim 1, which is characterized in that the outer surface of the joint body is equipped with
Composite sheet, composite sheet are semi-cylindrical hill.
6. a kind of high anti-twisting drill pipe joint as described in claim 1, which is characterized in that the first hollow positive gengon and the
Two hollow positive gengons are any one in 4,6,8,10,12 side body structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820485737.0U CN208040323U (en) | 2018-04-04 | 2018-04-04 | High anti-twisting drill pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820485737.0U CN208040323U (en) | 2018-04-04 | 2018-04-04 | High anti-twisting drill pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208040323U true CN208040323U (en) | 2018-11-02 |
Family
ID=63944297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820485737.0U Active CN208040323U (en) | 2018-04-04 | 2018-04-04 | High anti-twisting drill pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208040323U (en) |
-
2018
- 2018-04-04 CN CN201820485737.0U patent/CN208040323U/en active Active
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