CN204152450U - Full open type safety joint - Google Patents
Full open type safety joint Download PDFInfo
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- CN204152450U CN204152450U CN201420470700.2U CN201420470700U CN204152450U CN 204152450 U CN204152450 U CN 204152450U CN 201420470700 U CN201420470700 U CN 201420470700U CN 204152450 U CN204152450 U CN 204152450U
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Abstract
The utility model belongs to tool joint technical field of structures, for solving under Special Geological Condition, the conventional drill rod screw connection point used in oil exploitation device holds flimsy technical problem, provides a kind of full open type safety joint, comprise male joint and female joint, described male joint, comprises body I and male connection, and male connection part is provided with shoulder face I from inside to outside successively, resistance to stress abatement groove I, triangle thread I, isosceles trapezoid screw thread I, buttress thread I and zone of approach I; Described female joint, comprises body II and female adapter, and female adapter part is provided with shoulder face II from inside to outside successively, resistance to stress abatement groove II, triangle thread II, isosceles trapezoid screw thread II, triangle thread III and zone of approach II.The utility model has taken into full account the factor of metal strain, safe and reliable, install and dismounting rapid, coordinate and make that the limit antitorque moment of screw thread is the highest can reach 55000N.m.
Description
Technical field
The utility model relates to a kind of tool joint structure, is specially a kind of full open type safety joint.
Background technology
Oil drill rocker is one of key tool of probing abandoned wells or the natural gas well, in work progress, drilling rod is connected lengthening one by one, drill bit is goed deep in stratum.Drill bit most of time works under hidden environment, and the syndeton between drilling rod is very crucial, because the moment of torsion of rig is all transmit by coupling part between drilling rod.When particularly there is complicated geology situation in stratum, drilling rod connects and be mechanically connected with other that remarkable what distinguish is that Service Environment occurs to change whenever and wherever possible, and namely have great uncertainty, therefore drilling rod coupling part just requires high.Under the geological environment of complexity, drill string stressed very complicated and changeable, generally speaking, the various load that well head and shaft bottom drill string bear are all very large, current drill string statics is comparatively ripe, and drilling string dynamics still needs development and improvement, moreover, the development such as petroleum exploration and development forward ultradeep well, directional well, horizontal well, cluster well, the drill string force of these harsh wells is also the emphasis studied from now on.
Syndeton between current drilling rod is mainly and is threaded, drill string service load is all by being threaded, down transmit by with drilling rod, so screw connection point just becomes an area of stress concentration, good being threaded should be able to resist quick and various rotary bending moment, and reach not tired, and indeformable, adeciduate order.Current thread connecting mode has multiple, such as rectangular thread tooth form, zigzag joint, tapered thread tooth form, buttress thread, trapezoidal thread, angular thread, buttress thread etc.
Above various product is under the geological conditions that some are special, and as in permanent freezing layer, sandy soils, middle hardcore, performance is not very good, does not often reach target depth drill rod thread connecting portion and has just damaged.Particularly horizontal well drilling and directional well, drilling depth reaches more than 7000 (m), and degree of tilt even reaches 78 degree.Traditional drilling rod syndeton almost has no usage.Reason mainly passes by the relation ignoring screw thread physical dimension and metal material of our mistake.Think that screw thread physical dimension is changeless.But metal material itself is along with the change of environment, can there is small change in volume, thus cause the thread size that metal material is processed that the change of trace also can occur.The change of these trace is one of key factors causing body Joint failure.Therefore need from the source of raw-material production and processing just control thread quality, the safe and effective performance that guarantee is threaded.
Summary of the invention
The utility model is in order to solve under Special Geological Condition, and the drill rod thread connecting portion of the routine used in oil exploitation device holds flimsy technical problem, provides a kind of full open type safety joint.
The technical solution of the utility model is, a kind of full open type safety joint, comprises male joint and female joint, and the material used is 304 type nonmagnetic steels.
Described male joint, structure comprises body I, wall thickness 18mm, external diameter 172mm; Male connection, wall thickness 7mm, overall length 126mm, male connection part is provided with shoulder face I from inside to outside successively, resistance to stress abatement groove I, triangle thread I, isosceles trapezoid screw thread I, buttress thread I, screw thread head of district 84mm, the long 19.8mm of zone of approach I, zone of approach I, nipple outer face is inner conical face;
Described female joint, comprises body II, external diameter 172mm, female adapter, thickness 6.7mm, female adapter part is provided with shoulder face II from inside to outside successively, resistance to stress abatement groove II, triangle thread II, isosceles trapezoid screw thread II, triangle thread III, zone of approach II, nipple outer face is inner conical face, screw thread head of district 84mm, the long 20mm of zone of approach II, external diameter 155mm, described isosceles trapezoid screw thread, tooth top width 3.2mm, tooth bottom width 4.7mm, tooth depth 2.0mm.
Syndeton described in the utility model, has taken into full account the factor of metal strain, and the magnitude of interference of the metal material of production screw thread and warm field deformation scope are fully considered.When installing before use, leave certain gap value, in working order, especially under complex geological condition, connecting portion, especially threaded engagement position reaches optimum state just, safe and reliable, install and dismounting rapid, coordinate and make that the limit antitorque moment of screw thread is the highest can reach 55000N.m.
Accompanying drawing explanation
Fig. 1 is male joint local structural graph;
Fig. 2 is female joint local structural graph;
In figure: 1-body I, 2-shoulder face I, 3-resistance to stress abatement groove I, 4-zone of approach I, 5-buttress thread I, 6-isosceles trapezoid screw thread I, 7-triangle thread I, 8-body II, 9-shoulder face II, 10-resistance to stress abatement groove II, 11-triangle thread II, 12-isosceles trapezoid screw thread II, 13-triangle thread III, 14-zone of approach II.
Detailed description of the invention
A kind of full open type safety joint, comprise male joint and female joint, the material used is 304 type nonmagnetic steels;
As schematically shown in Figure 1, described male joint, structure comprises body I1, wall thickness 18mm, external diameter 172mm; Male connection, wall thickness 7mm, overall length 126mm; Male connection part is provided with shoulder face I2 from inside to outside successively, resistance to stress abatement groove I3, triangle thread I7, isosceles trapezoid screw thread I6, buttress thread I5, screw thread head of district 84mm, the long 19.8mm of zone of approach I4, zone of approach I4, nipple outer face is inner conical face;
As schematically shown in Figure 2, described female joint, comprises body II 8, external diameter 172mm, female adapter, thickness 6.7mm, female adapter part is provided with shoulder face II 9 from inside to outside successively, resistance to stress abatement groove II 10, triangle thread II 11, isosceles trapezoid screw thread II 12, triangle thread III 13, zone of approach II 14, nipple outer face is inner conical face, the long 20mm of screw thread head of district 84mm, zone of approach II 14, external diameter 155mm, the isosceles trapezoid screw thread of described male joint and female joint, tooth top width 3.2mm, tooth bottom width 4.7mm, tooth depth 2.0mm.
Claims (1)
1. a full open type safety joint, comprises male joint and female joint, and the material used is 304 type nonmagnetic steels; Described male joint, structure comprises body I(1), wall thickness 18mm, external diameter 172mm; Male connection, wall thickness 7mm, overall length 126mm; Male connection part is provided with shoulder face I(2 from inside to outside successively), resistance to stress abatement groove I(3), triangle thread I(7), isosceles trapezoid screw thread I(6), buttress thread I(5), screw thread head of district 84mm, zone of approach I(4), zone of approach I(4) long 19.8mm, nipple outer face is inner conical face; Described female joint, comprises body II(8), external diameter 172mm, female adapter, thickness 6.7mm, female adapter part is provided with shoulder face II(9 from inside to outside successively), resistance to stress abatement groove II(10), triangle thread II(11), isosceles trapezoid screw thread II(12), triangle thread III(13), zone of approach II(14), nipple outer face is inner conical face, screw thread head of district 84mm, the long 20mm of zone of approach II, external diameter 155mm; The isosceles trapezoid screw thread of described male joint and female joint, tooth top width 3.2mm, tooth bottom width 4.7mm, tooth depth 2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420470700.2U CN204152450U (en) | 2014-08-20 | 2014-08-20 | Full open type safety joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420470700.2U CN204152450U (en) | 2014-08-20 | 2014-08-20 | Full open type safety joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204152450U true CN204152450U (en) | 2015-02-11 |
Family
ID=52510575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420470700.2U Expired - Fee Related CN204152450U (en) | 2014-08-20 | 2014-08-20 | Full open type safety joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204152450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429861A (en) * | 2015-03-18 | 2017-12-01 | Nkk钢管株式会社 | Drilling rod with dual stage shoulder tool-joint |
-
2014
- 2014-08-20 CN CN201420470700.2U patent/CN204152450U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429861A (en) * | 2015-03-18 | 2017-12-01 | Nkk钢管株式会社 | Drilling rod with dual stage shoulder tool-joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20150820 |
|
| EXPY | Termination of patent right or utility model |