CN106761450A - A kind of flex-stem with high shock resistance energy - Google Patents
A kind of flex-stem with high shock resistance energy Download PDFInfo
- Publication number
- CN106761450A CN106761450A CN201710053241.6A CN201710053241A CN106761450A CN 106761450 A CN106761450 A CN 106761450A CN 201710053241 A CN201710053241 A CN 201710053241A CN 106761450 A CN106761450 A CN 106761450A
- Authority
- CN
- China
- Prior art keywords
- flexible
- shaft
- cover sheet
- flex
- stem
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
Abstract
A kind of flex-stem with high shock resistance energy, belongs to drilling tool technical field, including shaft, is arranged on the drilling rod inner chamber inside shaft, and male joint and female joint with shaft whole installation are equipped with screw thread in male joint and female joint；The outer surface of shaft is from inside to outside sequentially provided with flexible cover sheet and enhancement layer; flexible cover sheet is made up of flexible arbor and flexible filler; flexible arbor is arranged in flexible filler; flexible cover sheet's parcel shaft is set; enhancement layer parcel is arranged on the outer layer of flexible cover sheet, and enhancement layer forms monolithic construction by melting casting with shaft.Structure of the present invention is novel; operation principle is clear; compared with traditional jackrod structure; the anti-seismic performance of drilling rod is greatly improved; the place of being welded to connect to drilling rod forms sufficiently protection, reduces the damage coefficient of drilling rod, saves drilling rod manufacture and maintenance cost; resource has been saved, the performance that hard drills occasion has been met.
Description
Technical field
The invention belongs to drilling tool technical field, it is related to a kind of no-dig technique drilling rod, it is more particularly to a kind of that there is high shock resistance energy
Flex-stem.
Background technology
The drilling rod steel pipe with a chain for binding criminals line that is afterbody, for connect rig landscape apparatus and positioned at drilling well bottom bore mill equipment or
The device of bottom outlet.The purposes of drilling rod is that drilling mud is transported into drill bit, and bottom outlet dress is improved, reduces or rotated together with drill bit
Put.Drilling rod allows for bearing huge interior external pressure, distortion, bending and vibration.Tool joint be realize drilling rod connection it is important
Part, its condition of work is very severe, and stressing conditions are extremely complex.During normal rotary drilling, joint is by pretension, drawing
Stretch, reverse, bending and various dead loads and the dynamic loading such as external and internal pressure, and to be subject to the corrosion of drilling mud and stratum media to make
With.Used between the head threads and the body of rod of most of drilling rod that existing market occurs and be welded to connect, but in drilling process, often
Touch hard object forms rigid collision, and drilling rod weld easily forms fracture after vibrations, and strong influence is caused to processing.
The content of the invention
The present invention, by the defect and deficiency that there is fracture after rigid shock in threaded connection place, proposes one for existing drilling rod
The flex-stem with high shock resistance energy is planted, the welding position of drilling rod can be effectively protected, the anti-seismic performance of drilling rod is available significantly
Degree is improved, and can meet the performance of the probing of hard landforms.
The technical scheme is that：A kind of flex-stem with high shock resistance energy, including shaft, are arranged in shaft
The drilling rod inner chamber in portion, male joint and female joint with shaft whole installation, screw thread is equipped with the male joint and female joint；Its
It is characterised by：The outer surface of the shaft is from inside to outside sequentially provided with flexible cover sheet and enhancement layer, the flexible cover sheet by
Flexible arbor and flexible filler are constituted, and the flexible arbor is arranged in flexible filler, and the flexible cover sheet wraps up bar
Body is set, and the enhancement layer parcel is arranged on the outer layer of the flexible cover sheet, and the enhancement layer is by melting casting and shaft
Form monolithic construction.
The flexible arbor is low stiffness factor spring, and coefficient of elasticity is between 600 N/m~800N/m.
The thickness of the flexible cover sheet is 5~10mm, and flexible filler is rubber or asbestos.
The enhancement layer is the cast iron layer that thickness is 5mm.
The male joint and female joint are with 1:The cone joint of 20 tapers, screw thread is placed on cone joint.
The form of thread is trapezoidal tapered tread.
Beneficial effects of the present invention are：A kind of flex-stem with high shock resistance energy proposed by the present invention, structure is novel,
Operation principle is clear, compared with traditional jackrod structure, flexible cover sheet and enhancement layer, the antidetonation of drilling rod is set on the outside of the body of rod
Performance is greatly improved, and the place of being welded to connect to drilling rod forms sufficiently protection, reduces the damage system of drilling rod
Number, saves drilling rod manufacture and maintenance cost, has saved resource, meets the performance that hard drills occasion.
Brief description of the drawings
Fig. 1 is complete section structural representation of the present invention.
Fig. 2 is partial enlargement structural representation in Fig. 1.
In figure：Enhancement layer 1, flexible cover sheet 2, flexible arbor 2-1, flexible filler 2-2, shaft 3, male joint 4, drilling rod
Inner chamber 5, female joint 6.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1-2, a kind of flex-stem with high shock resistance energy, including shaft 3, is arranged on the drilling rod inside shaft 3
Inner chamber 5, male joint 4 and female joint 6 with the whole installation of shaft 3, screw thread is equipped with male joint 4 and female joint 6；Shaft 3
Outer surface is from inside to outside sequentially provided with flexible cover sheet 2 and enhancement layer 1, and flexible cover sheet 2 is by flexible arbor 2-1 and flexible filling
Thing 2-2 is constituted, and flexible arbor 2-1 is arranged in flexible filler 2-2, and the parcel shaft 3 of flexible cover sheet 2 is set, and enhancement layer 1 is wrapped
The outer layer for being arranged on flexible cover sheet 2 is wrapped up in, enhancement layer 1 forms monolithic construction by melting casting with shaft 3.
As shown in Figure 1-2, a kind of flex-stem with high shock resistance energy, flexible arbor 2-1 is low stiffness factor spring,
Coefficient of elasticity is between 600 N/m~800N/m；The thickness of flexible cover sheet 2 is 5~10mm, and flexible filler 2-2 is rubber
Or asbestos；Enhancement layer 1 is the cast iron layer that thickness is 5mm；Male joint 4 and female joint 6 are with 1:The cone joint of 20 tapers, spiral shell
Line is placed on cone joint；Form of thread is trapezoidal tapered tread.
As shown in Figure 1-2, a kind of procedure of processing of the flex-stem with high shock resistance energy is as follows：By forging method plus
Work goes out shaft and pin and box sub part, and screw thread is then processed in pin and box sub, then will pour the flexible cover sheet's set being poured in
Put on the outside of shaft, the shaft being finally nested with is placed in mould the casting for positioning and carrying out external protection, taken out after cooling
Drilling rod.
Structure of the present invention is novel, and operation principle is clear, compared with traditional jackrod structure, flexible guarantor is set on the outside of the body of rod
Sheath and enhancement layer, the anti-seismic performance of drilling rod are greatly improved, and the place of being welded to connect to drilling rod forms sufficiently
Protection, reduces the damage coefficient of drilling rod, saves drilling rod manufacture and maintenance cost, has saved resource, meets hard probing
The performance of occasion.
Claims (6)
1. a kind of flex-stem with high shock resistance energy, including shaft (3), is arranged on the internal drilling rod inner chamber of shaft (3)
(5), with the male joint (4) and female joint (6) of shaft (3) whole installation, it is equipped with the male joint (4) and female joint (6)
Screw thread；It is characterized in that：The outer surface of the shaft (3) is from inside to outside sequentially provided with flexible cover sheet (2) and enhancement layer (1),
The flexible cover sheet (2) is made up of flexible arbor (2-1) and flexible filler (2-2), and the flexible arbor (2-1) is arranged on
In flexible filler (2-2), the flexible cover sheet (2) is wrapped up shaft (3) and is set, and enhancement layer (1) parcel is arranged on institute
The outer layer of flexible cover sheet (2) is stated, the enhancement layer (1) forms monolithic construction by melting casting with shaft (3).
2. it is according to claim 1 it is a kind of with high shock resistance can flex-stem, it is characterised in that：The flexible core
Bone (2-1) is low stiffness factor spring, and coefficient of elasticity is between 600 N/m~800N/m.
3. it is according to claim 1 it is a kind of with high shock resistance can flex-stem, it is characterised in that：The flexible protective
The thickness of layer (2) is 5~10mm, and flexible filler (2-2) is rubber or asbestos.
4. it is according to claim 1 it is a kind of with high shock resistance can flex-stem, it is characterised in that：The enhancement layer
(1) it is that thickness is the cast iron layer of 5mm.
5. it is according to claim 1 it is a kind of with high shock resistance can flex-stem, it is characterised in that：The male joint
And female joint (6) is with 1 (4):The cone joint of 20 tapers, screw thread is placed on cone joint.
6. it is according to claim 5 it is a kind of with high shock resistance can flex-stem, it is characterised in that：The form of thread
It is trapezoidal tapered tread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710053241.6A CN106761450A (en) | 2017-01-22 | 2017-01-22 | A kind of flex-stem with high shock resistance energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710053241.6A CN106761450A (en) | 2017-01-22 | 2017-01-22 | A kind of flex-stem with high shock resistance energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106761450A true CN106761450A (en) | 2017-05-31 |
Family
ID=58942630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710053241.6A Pending CN106761450A (en) | 2017-01-22 | 2017-01-22 | A kind of flex-stem with high shock resistance energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761450A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798543A (en) * | 2018-06-07 | 2018-11-13 | 贵州中钻机械设备有限公司 | Down-the-hole drilling pipe improved structure |
| WO2019148357A1 (en) * | 2018-01-31 | 2019-08-08 | 成都科盛石油科技有限公司 | Assistive apparatus for oil exploitation |
-
2017
- 2017-01-22 CN CN201710053241.6A patent/CN106761450A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019148357A1 (en) * | 2018-01-31 | 2019-08-08 | 成都科盛石油科技有限公司 | Assistive apparatus for oil exploitation |
| CN108798543A (en) * | 2018-06-07 | 2018-11-13 | 贵州中钻机械设备有限公司 | Down-the-hole drilling pipe improved structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |