CN202706935U - Drill rod structure with reinforced end part - Google Patents
Drill rod structure with reinforced end part Download PDFInfo
- Publication number
- CN202706935U CN202706935U CN 201220335721 CN201220335721U CN202706935U CN 202706935 U CN202706935 U CN 202706935U CN 201220335721 CN201220335721 CN 201220335721 CN 201220335721 U CN201220335721 U CN 201220335721U CN 202706935 U CN202706935 U CN 202706935U
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- drill rod
- drilling rod
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- end part
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Abstract
The utility model relates to a drill rod structure with a reinforced end part and belongs to the technical field of geological exploration drilling equipment. According to the technical scheme, the drill rod structure comprises a drill rod body (1), a drill rod substrate (2), a drill rod thread (3) and a thickened substrate (4); the end part structure of the drill rod body is as follows: a hole (5) is arranged on the end part of the drill rod body; the drill rod substrate is arranged on the end part of the drill rod body; the drill rod thread is arranged on the drill rod substrate; and the thickened substrate is arranged on a part corresponding to the drill rod thread. The drill rod structure has the characteristics of high thread connection strength, high torsion resistance and small thread deformation; the drill rod structure is suitable for the deep well drilling for geological exploration; the accidents, such as drill rod breaking, and the like, are effectively reduced in the deep well drilling; the drill rod structure has an important significance in deep well drilling; the property of the end part of the drill rod is enhanced by increasing the wall thickness of the thread part under the condition of unchanging the advantages of the original thread connection; and the connection strength and the torsion resistance are both increased, so that the incidence rate of the other related accidents is reduced.
Description
Technical field
The utility model relates to a kind of end intensive treatment jackrod structure, belongs to used for geological prospecting drilling equipment technical field.
Background technology
At present, the used for geological prospecting drilling rod mainly contains two kinds of form of structure: one, be comprised of drilling rod body, male joint, female joint, they are threaded connection together, form a drilling rod; Two, process respectively internal and external threads at drilling rod body two ends, have a drilling rod of one's own.When geology was crept into, situation was very complicated in the hole, the comprehensive moment of the irregular complexity such as the drilling rod body bears and draws, presses, turns round, impact, the weakest link of drilling rod namely very easily ruptures at the screw thread position, but wall thickness attenuation after the drill rod end machining screw has increased the possibility that ruptures.For addressing this problem, two kinds of jackrod structures of background technology adopt the hot upsetting thickened end usually, and the internal diameter of drill rod end is diminished, and external diameter increases, and forms EIU jumping-up drilling rod, to increase the intensity of screw connection point.But the hot upsetting process causes the drill rod materials inside metallographic to change, thereby reduces drilling rod body mechanical performance, is unfavorable for that deeper the exploration of layer is crept into.In addition, tension, the torsional property of drilling rod commonly used are only suitable in creeping at middle shallow bore hole, in case drilling depth is excessive, the drill rod thread position accident that fractures occur very easily.
The utility model content
The utility model purpose provides a kind of end intensive treatment jackrod structure, the hardness of drilling rod yield point and drill rod thread connecting portion is high, is applicable to special deep well drilling, reduces and creeps into accident rate, improve the application life of drilling tool, solve the problems referred to above that exist in the background technology.
The technical solution of the utility model is: a kind of end intensive treatment jackrod structure, comprise drilling rod body, drilling rod matrix, drill rod thread and thicken matrix, the end construction of drilling rod body is: the drilling rod end of body is provided with the hole, the end of drilling rod body is provided with the drilling rod matrix, the drilling rod matrix is provided with drill rod thread, and the position corresponding with drill rod thread is provided with and thickens matrix.
The drilling rod end of body is the end construction of cold extrusion shaped formation drilling rod body.
The end construction of drilling rod body is divided into two kinds of structures, and a kind of is throat structure, and a kind of is flaring structure.
Throat structure, drill rod thread is external screw thread, is positioned at the external surface of drilling rod matrix, the thicken matrix corresponding with external screw thread is positioned at drilling rod matrix inner surface; Throat structure dwindles the internal-and external diameter of drilling rod end of body simultaneously, keeps the wall thickness of drill rod end constant, is used for threading, in the situation that former external screw thread and screw thread matrix are constant, produce and thickens matrix, and the bonding strength of screw thread is increased.
Flaring structure, drill rod thread is internal thread, is positioned at the inner surface of drilling rod matrix, the thicken matrix corresponding with internal thread is positioned at the drilling rod outer surface of matrix; Flaring structure enlarges the internal-and external diameter of drilling rod end of body simultaneously, keeps drill pipe thickness constant, in the situation that former internal thread and screw thread matrix are constant, produce and thickens matrix, and the bonding strength of screw thread increases.
Adopt the utility model, the drilling rod end of body is with cold extrusion shaped, and yield point and hardness increase, drilling rod end of body wall thickness is even, than hot upsetting drilling rod good concentricity, the metallographic structure of drilling rod body can not change, and can not reduce the mechanical performance of drilling rod, the organizational styucture of drilling rod end of body is finer and close, hardness increases, and is conducive to improve the bonding strength of screw thread, is conducive to superdeep holes and creeps into, the drill rod end wall thickness does not increase, and the more common jumping-up drilling rod of drilling rod body weight is light.
The utlity model has that the intensity that is threaded is high, torsional property is high, little, the characteristics of screw thread distortion, be applicable to the special deep well drilling of geological drilling, the generation of the accident such as can effectively reduce that drilling rod fractures in special deep well drilling has great significance for special deep well drilling; The reinforcement of drill rod end performance, except not changing original advantage that is threaded, increase the wall thickness at screw thread position, its bonding strength and torsional property are improved, greatly reduced the possibility of screw thread position fracture, thereby also reduced the incidence of other related accident, its effect is particularly evident in special deep well drilling.
Description of drawings
Accompanying drawing 2 is the utility model embodiment two schematic diagrames;
Among the figure: drilling rod body 1, drilling rod matrix 2, drill rod thread 3, thicken matrix 4, hole 5.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
A kind of end intensive treatment jackrod structure, comprise drilling rod body 1, drilling rod matrix 2, drill rod thread 3 and thicken matrix 4, the end construction of drilling rod body is: the drilling rod end of body is provided with hole 5, the end of drilling rod body is provided with the drilling rod matrix, the drilling rod matrix is provided with drill rod thread, and the position corresponding with drill rod thread is provided with and thickens matrix.
Embodiment one, and with reference to accompanying drawing 1, the end construction of drilling rod body is throat structure.
Throat structure, drill rod thread 3 is external screw thread, is positioned at the external surface of drilling rod matrix 2, the thicken matrix 4 corresponding with external screw thread is positioned at drilling rod matrix inner surface; Throat structure dwindles the internal-and external diameter of drilling rod end of body simultaneously, keeps the wall thickness of drill rod end constant, is used for threading, in the situation that former external screw thread and screw thread matrix are constant, produce and thickens matrix, and the bonding strength of screw thread is increased.
The specific embodiment: tubing φ 71 * 5, threading, the large footpath of the large end of screw thread φ 68.5mm, the high 1mm of tooth.The large end path of screw thread φ 66.5, wall thickness is (φ 66.5-φ 61)/2=2.75mm herein;
Pipe end becomes φ 69 * 5 after the shrinkage, and this moment, thread parameter was constant, and endoporus becomes φ 59mm, the large end wall of screw thread is thick to be (φ 66.5-φ 59)/2=3.75mm.
Thicken body portion 3.75-2.75=1mm be
Wall thickness increases 1/2.75=36.36%.
Embodiment two, and with reference to accompanying drawing 2, the end construction of drilling rod body is flaring structure.
Flaring structure, drill rod thread 3 is internal thread, is positioned at the inner surface of drilling rod matrix 2, the thicken matrix 4 corresponding with internal thread is positioned at the drilling rod outer surface of matrix; Flaring structure enlarges the internal-and external diameter of drilling rod end of body simultaneously, keeps drill pipe thickness constant, in the situation that former internal thread and screw thread matrix are constant, produce and thickens matrix, and the bonding strength of screw thread increases.
The specific embodiment: tubing φ 71 * 5, machining internal thread, the large end path of screw thread φ 64.4mm, the high 1mm of tooth.The large footpath φ 66.4 of the large end of screw thread, wall thickness is (φ 71-φ 66.4)/2=2.3mm herein;
Pipe end becomes φ 73 * 5 after the cold expansion, and this moment, thread parameter was constant, and machining screw position external diameter becomes φ 73mm, the large end wall of screw thread is thick to be (φ 73-φ 66.4)/2=3.3mm.
Thicken body portion 3.3-2.3=1mm be.
Wall thickness increases 1/2.3=43.47%.
The geometry deformation amount of a shrinkage of the utility model (expansion) can reach 2mm, if the larger tubing of wall thickness can adopt twice shrinkage (expansion), its geometry deformation amount can reach 2.5～3mm, can satisfy the processing request of most of kind drill rod threads.
Claims (4)
1. end intensive treatment jackrod structure, it is characterized in that comprising drilling rod body (1), drilling rod matrix (2), drill rod thread (3) and thicken matrix (4), the end construction of drilling rod body is: the drilling rod end of body is provided with hole (5), the end of drilling rod body is provided with the drilling rod matrix, the drilling rod matrix is provided with drill rod thread, and the position corresponding with drill rod thread is provided with and thickens matrix.
2. described a kind of end intensive treatment jackrod structure according to claim 1 is characterized in that the drilling rod end of body is the end construction of cold extrusion shaped formation drilling rod body.
3. described a kind of end intensive treatment jackrod structure according to claim 1 and 2, the end construction that it is characterized in that the drilling rod body is throat structure: drill rod thread (3) is external screw thread, be positioned at the external surface of drilling rod matrix (2), the thicken matrix (4) corresponding with external screw thread is positioned at drilling rod matrix inner surface.
4. described a kind of end intensive treatment jackrod structure according to claim 1 and 2, the end construction that it is characterized in that the drilling rod body is flaring structure: drill rod thread (3) is internal thread, be positioned at the inner surface of drilling rod matrix (2), the thicken matrix (4) corresponding with internal thread is positioned at the drilling rod outer surface of matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335721 CN202706935U (en) | 2012-07-12 | 2012-07-12 | Drill rod structure with reinforced end part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335721 CN202706935U (en) | 2012-07-12 | 2012-07-12 | Drill rod structure with reinforced end part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202706935U true CN202706935U (en) | 2013-01-30 |
Family
ID=47587244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220335721 Expired - Fee Related CN202706935U (en) | 2012-07-12 | 2012-07-12 | Drill rod structure with reinforced end part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202706935U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909185A (en) * | 2016-06-27 | 2016-08-31 | 无锡双马钻探工具有限公司 | Thread structure of drilling rod |
| CN105952390A (en) * | 2016-06-27 | 2016-09-21 | 无锡双马钻探工具有限公司 | Large-torque drill stem thread structure |
| CN107575169A (en) * | 2017-08-24 | 2018-01-12 | 衡阳华菱连轧管有限公司 | The joint processing method of oil well pipe and oil well pipe |
| CN111589890A (en) * | 2020-05-27 | 2020-08-28 | 中地装(无锡)钻探工具有限公司 | Pipe shrinking process for drill pipe connecting part |
-
2012
- 2012-07-12 CN CN 201220335721 patent/CN202706935U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909185A (en) * | 2016-06-27 | 2016-08-31 | 无锡双马钻探工具有限公司 | Thread structure of drilling rod |
| CN105952390A (en) * | 2016-06-27 | 2016-09-21 | 无锡双马钻探工具有限公司 | Large-torque drill stem thread structure |
| CN107575169A (en) * | 2017-08-24 | 2018-01-12 | 衡阳华菱连轧管有限公司 | The joint processing method of oil well pipe and oil well pipe |
| CN111589890A (en) * | 2020-05-27 | 2020-08-28 | 中地装(无锡)钻探工具有限公司 | Pipe shrinking process for drill pipe connecting part |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20160712 |