CN109681134A - Drill rod connector - Google Patents
Drill rod connector Download PDFInfo
- Publication number
- CN109681134A CN109681134A CN201811619678.2A CN201811619678A CN109681134A CN 109681134 A CN109681134 A CN 109681134A CN 201811619678 A CN201811619678 A CN 201811619678A CN 109681134 A CN109681134 A CN 109681134A
- Authority
- CN
- China
- Prior art keywords
- section
- nipple
- coupling
- clamping
- drill rod
- 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
- 210000002445 nipple Anatomy 0.000 claims abstract description 59
- 230000008878 coupling Effects 0.000 claims abstract description 48
- 238000010168 coupling process Methods 0.000 claims abstract description 48
- 238000005859 coupling reaction Methods 0.000 claims abstract description 48
- 230000002093 peripheral effect Effects 0.000 claims abstract description 20
- 238000005553 drilling Methods 0.000 claims description 44
- 238000007789 sealing Methods 0.000 claims description 25
- 230000005389 magnetism Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention discloses a kind of drill rod connector, including coupling and nipple, coupling right part is sleeve sections, it is ladder shaft-like structure in the middle part of nipple, ladder shaft-like structure includes left axle section and right axis section, the outer diameter of left axle section is less than the outer diameter of right axis section, sleeve sections are sleeved in left axle section, it is the first clamping section in the middle part of coupling, nipple left part is the second clamping section compatible with the first clamping section, second clamping section includes at least two clamping blocks being separated from each other, arcuation card slot is equipped on clamping block outer peripheral surface, first central through hole inner wall corresponding with the first clamping section is equipped with block, the left side of block is equipped with baffle, it is equipped between sleeve sections right end and the right axis section left end for circumferential locking structure.Drill rod connector of the invention is equipped with the circumferential locking structure for preventing coupling and nipple from relatively rotating between sleeve sections right end and right axis section left end, improves stable connection between coupling and nipple.
Description
Technical field
The present invention relates to exploration drill pipe art, more specifically a kind of drill rod connectors.
Background technique
Resource exploration and exploitation are usually in outlying remote district work, and vehicle is difficult to enter, and traditional big drilling machine is difficult
To meet easily carrying and easy-to-dismount requirement, it is therefore desirable to reduce the labor intensity for carrying drilling machine and increase using small-sized drill
Working efficiency；Since drilling rod generally requires very frequent installation and removal to drilling machine in drilling process, if drilling machine works,
Drilling rod cannot be quickly installed and dismantle, and will lead to the increasing of investigation and prospecting amount, have an effect on the progress of resource exploration and exploitation.
In order to realize that the Fast Installation and disassembly of drilling rod, the patent of Publication No. CN2552937 disclose a kind of tapping machine
Drilling rod fast connection joint, using the structure of plug pin shaft, can faster installation and removal drilling rod, alleviate drilling rod installation and tear open
The workload unloaded.A kind of Quick-connection pin structure of drill rod is disclosed in the patent of Publication No. CN202249814U, including plunger,
Non-return ring, branch head screw face, shank, quickly pin, split pin, pin point, which can guarantee quick jointed rod, convenient timely
Remove connecting pin.A kind of portable geological prospecting sampler drill is disclosed in the patent of Publication No. CN202882905U, wherein
The connection of drilling rod equally uses the structure of plug pin shaft.Above drilling rod fast joint structure has been all made of the connection side of pin type
Formula, but in actual use, using the connection type of pin type, there are the disadvantages that drilling rod and connection structure are easy to appear stress concentration
Disease leads to the deformed damaged of drilling rod, reduces the service life of drilling rod, increases the cost of investigation and prospecting.In drilling process,
Drilling rod can bear the combined loads such as torsion, tension and compression, bending, vibration, cause the connector of drilling rod to damage phenomenon frequent occurrence, seriously
Influence the progress of resource exploration and exploitation.It is open in order to overcome the disadvantage for being easy to appear stress concentration between drilling rod and connector
Number a kind of fast connecting joint of drilling rod is disclosed for the patent of CN105298408B, but outer tube in this patent and interior
Circumferential locking structure is not provided between casing, since in drilling process, drilling rod can bear to reverse, so outer tube and inner sleeve
In the presence of the risk loosened, it cannot be guaranteed that the stability of drilling rod connection.
Summary of the invention
The purpose of the present invention is to provide a kind of drill rod connectors, are equipped with and use between sleeve sections right end and right axis section left end
In the circumferential locking structure for preventing coupling and nipple from relatively rotating, stable connection between coupling and nipple is improved
Property.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of drill rod connector, including coupling and nipple, the coupling and the nipple rotary clamping, it is described external
It is equipped with the first central through hole in head, the second central through hole is equipped in the nipple, the coupling left end and the first drilling rod are right
End is detachably fixed connection, and the nipple right end is detachably fixed with the second drilling rod left end and connect.The coupling right part is
Sleeve sections, the nipple middle part is ladder shaft-like structure, and the ladder shaft-like structure includes left axle section and right axis section, the left side
The outer diameter of shaft part is less than the outer diameter of the right axis section, and the sleeve sections are sleeved in the left axle section and the right end of the sleeve sections
Face is abutted with the left side of the right axis section, is the first clamping section in the middle part of the coupling, the nipple left part be with it is described
The compatible second clamping section of first clamping section, the second clamping section include at least two about the nipple axisymmetrical
The clamping block arranged and be separated from each other is equipped with arcuation card slot, first central through hole and institute on the clamping block outer peripheral surface
It states the corresponding inner wall of the first clamping section and is equipped with the gear radially arranged along the first central through hole and matched with the arcuation card slot
Block, the left side of the block are equipped with baffle corresponding with the lateral location of the clamping block left end, the sleeve sections right end with
The circumferential locking structure for preventing the coupling and nipple from relatively rotating is equipped between the right axis section left end.
The circumferential direction locking structure includes magnetic locking plate, and the sleeve sections right end outer peripheral surface is equipped with and magnetic locking plate
It is adapted and is parallel to the first lock groove of the sleeve sections axis, right axis section left end outer peripheral surface is equipped with and the magnetism
Locking plate is adapted and is parallel to the second lock groove of the right axis section axis.
The magnetism locking plate inner end and the first locking groove bottom are hinged, and the magnetism locking plate outer end is equipped with arc
Angle.
Annular seal section is installed on the left side of the clamping block, the annular seal section is coaxial with the nipple
Line, the outer diameter of the annular seal section are less than the internal diameter of circumference corresponding to the block.
The first central through hole left part is equipped with sealing bore compatible with the annular seal section.
The annular seal section right end is the prismoid section shunk to the left, the sealing bore right end be with the prismoid section to
Compatible cone hole part.
Outer peripheral surface is equipped with the first annular recess in the middle part of the annular seal section, and the is equipped in first annular recess
One sealing ring.
The coupling left end is threadedly coupled with the first drilling rod right end, and first central through hole left end is equipped with first
Internal thread structure, the first drilling rod right end are equipped with the first external thread structure compatible with first internal thread structure.
The nipple right end is threadedly coupled with the second drilling rod left end, and the nipple right end is equipped with the second internal screw thread knot
Structure, second drilling rod left end are equipped with the second external thread structure compatible with second internal thread structure.
The left axle section outer peripheral surface is equipped with the second annular recess, is equipped with the second sealing in second annular recess
Circle.
Beneficial effects of the present invention are as follows:
One, coupling first of the present invention is clamped section and nipple second is clamped being used cooperatively for section, can prevent coupling and interior
Axially opposing movement occurs for connector, and circumferential locking structure is equipped between sleeve sections right end and right axis section left end, prevent coupling and
Circumferential relative rotation occurs for nipple, avoids in drilling process and coupling occurs and nipple gets loose phenomenon, improves
Stable connection between coupling and nipple；
Two, the sleeve sections of coupling of the present invention are sleeved in the left axle section of nipple, and left axle section outer peripheral surface is equipped with the second ring
Shape groove is equipped with the second sealing ring in the second annular recess, and such structure improves the sealing performance of drill rod connector；
Three, the present invention is equipped with arcuation card slot on the clamping block outer peripheral surface of nipple, on coupling the first central through hole inner wall
Compatible block is set, and block and clamping block are used cooperatively, screwing and improving external convenient for nipple and coupling
Head and nipple are in the stability axially connected；
Four, the present invention is equipped with baffle in the left side of block, and baffle plays position-limiting action in circumferential rotation to clamping block, convenient for making
Operator knows that nipple is rotated in place in the circumferential and improves coupling and nipple in the stabilization circumferentially connected in time
Property；
Five, circumferential locking structure of the invention includes magnetic locking plate, and magnetic locking plate can closely be inhaled with coupling, nipple
It closes, it is easy to use, and stability is stronger；
Six, the present invention is equipped with the first lock groove compatible with magnetic locking plate on sleeve sections right end outer peripheral surface, in right axis section
Left end outer peripheral surface is equipped with the second lock groove compatible with magnetic locking plate, and the first lock groove and the second lock groove are convenient for magnetic
Property locking plate be put into, reduce influence and magnetism locking plate that outer bound pair magnetic lock stops plate to external influence；
Seven, the present invention is installed with annular seal section on the left side of clamping block, and it is right that the outer diameter of annular seal section is less than block institute
The internal diameter of circumference is answered, passes through block region convenient for annular seal section；
Eight, the present invention is equipped with sealing bore compatible with annular seal section in the first central through hole left part, in annular seal section
Portion's outer peripheral surface is equipped with the first annular recess, is equipped with the first sealing ring, annular seal section and sealing hole in the first annular recess
Section be used cooperatively and the first sealing ring three improves the sealing performance of drill rod connector jointly.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the top view of nipple of the present invention；
Fig. 3 is the left view of Fig. 2；
Fig. 4 be in Fig. 2 along A-A to cross-sectional view；
Fig. 5 is the cross-sectional view in Fig. 4 along B-B direction；
Fig. 6 be in Fig. 4 along C-C to cross-sectional view；
Fig. 7 is the top view of coupling of the present invention；
Fig. 8 is the structural schematic diagram of the magnetic locking plate of coupling in Fig. 7 in the closure state；
Fig. 9 is the right view of Fig. 8；
Figure 10 be in Fig. 7 along D-D to cross-sectional view；
Figure 11 be in Figure 10 along E-E to cross-sectional view；
Figure 12 be in Figure 10 along F-F to cross-sectional view.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.It should be clear that structure depicted in this specification attached drawing,
Ratio, size etc., only to cooperate the revealed content of specification, so that those skilled in the art understands and reads, and
Non- therefore not have technical essential meaning to limit the enforceable qualifications of the present invention, the modification of any structure, ratio are closed
The change of system or the adjustment of size should all still be fallen in the case where not influencing the effect of present invention can be generated and the purpose that can reach
In the range of disclosed technology contents can be covered.Meanwhile in this specification it is cited as "upper", "lower",
The term of "left", "right", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than implementable to limit the present invention
Range, relativeness is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable model of the present invention
Farmland.
As shown in Figures 1 to 12, a kind of drill rod connector, including coupling 1 and nipple 2, the coupling 1 and described inscribed
First 2 rotary clamping, the coupling 1 is interior to be equipped with the first central through hole, is equipped with the second central through hole in the nipple 2.It is described
1 left end of coupling is detachably fixed with 3 right end of the first drilling rod and connect, and 2 right end of nipple and 4 left end of the second drilling rod are detachable
It is fixedly connected.1 right part of coupling is sleeve sections 5, is ladder shaft-like structure, the ladder shaft-like in the middle part of the nipple 2
Structure includes left axle section 6 and right axis section 7, and the outer diameter of the left axle section 6 is less than the outer diameter of the right axis section 7,5 sets of the sleeve sections
In the left axle section 6 and the right side of the sleeve sections 5 is abutted with the left side of the right axis section 7.In the coupling 1
Portion is the first clamping section 8, and 2 left part of nipple is second clamping section 9 compatible with the first clamping section 8, described the
Two clamping sections 9 include at least two clamping blocks 10 arranged and be separated from each other about 2 axisymmetrical of nipple, the clamping
Arcuation card slot 11 is equipped on 10 outer peripheral surface of block.It is set on first central through hole inner wall corresponding with the first clamping section 8
There is the block 12 radially arranged along the first central through hole and matched with the arcuation card slot 11, the left side of the block 12 is equipped with
Baffle 13 corresponding with the lateral location of 10 left end of clamping block, 5 right end of sleeve sections and 7 left end of right axis section it
Between be equipped with circumferential locking structure for preventing the coupling 1 and nipple 2 from relatively rotating.
The circumferential direction locking structure includes magnetic locking plate 14, and magnetic locking plate 14 can be tight with coupling 1, nipple 2
Close actuation, it is easy to use, and stability is stronger.The 5 right end outer peripheral surface of sleeve sections is equipped with and is adapted with magnetic locking plate 14
And it is parallel to the first lock groove 15 of 5 axis of sleeve sections, the 7 left end outer peripheral surface of right axis section is equipped with and the magnetic lock
Only plate 14 is adapted and is parallel to the second lock groove 16 of 7 axis of right axis section.First lock groove 15 and the second lock groove 16
Convenient for magnetic locking plate 14 to be put into, 14 pairs of extraneous shadows of influence and magnetic locking plate that outer bound pair magnetic lock stops plate 14 are reduced
It rings.
Magnetism 14 inner end of locking plate and 15 bottom surface of the first lock groove are hinged, and such structure is convenient for magnetic locking
The rotation of plate 14 improves working efficiency.Magnetism 14 outer end of locking plate is equipped with arc angle, and arc angle is lifted and is located at convenient for hand or tool
Magnetic locking plate 14 in first lock groove 15 or the second lock groove 16.
Annular seal section 17, the annular seal section 17 and the nipple are installed on the left side of the clamping block 10
2 coaxial lines, the outer diameter of the annular seal section 17 are less than the internal diameter of circumference corresponding to the block 12, are convenient for annular seal section 17
Across 12 region of block.
The first central through hole left part is equipped with sealing bore 18 compatible with the annular seal section 17, annular seal
Section 17 is with sealing bore 18 with the use of the sealing performance for improving drill rod connector.
17 right end of annular seal section is the prismoid section 19 shunk to the left, and 18 right end of sealing bore is and the cone
Platform portion 19 is to compatible cone hole part 20.Being used cooperatively for prismoid section 19 and cone hole part 20, improves the sealing of drill rod connector
Performance.Cone hole part 20 is convenient for the entrance of annular seal section 17 and plays the role of axial limiting to nipple 2.
The 17 middle part outer peripheral surface of annular seal section is equipped with the first annular recess, is equipped in first annular recess
First sealing ring 21.First sealing ring 21 improves the sealing performance of drill rod connector.
1 left end of coupling is threadedly coupled with 3 right end of the first drilling rod, and first central through hole left end is equipped with the
One internal thread structure, 3 right end of the first drilling rod are equipped with the first external thread structure compatible with first internal thread structure.
2 right end of nipple is threadedly coupled with 4 left end of the second drilling rod, and 2 right end of nipple is equipped with the second internal screw thread
Structure, 4 left end of the second drilling rod are equipped with the second external thread structure compatible with second internal thread structure.
6 outer peripheral surface of left axle section is equipped with the second annular recess, is equipped with the second sealing in second annular recess
Circle 22, the second sealing ring 22 improves the sealing performance of drill rod connector.
The installation process of drill rod connector of the present invention and the first drilling rod 3, the second drilling rod 4 is as follows:
When installation, first 1 left end of coupling is connect with 3 right end of the first drilling rod, then according to 2 clamping block 10 of nipple and coupling
Nipple 2 is inserted into coupling 1 by the direction that 1 block, 12 position is staggered, interior after prismoid section 19 is fully inserted into cone hole part 20
Connector 2 cannot move axially to the left again, then rotating nipple 2, until the side of 2 clamping block of nipple, 10 left end and opposite
When the baffle 13 answered contacts, block 12 is stuck in completely in arcuation card slot 11 at this time, and coupling 1 and nipple 2 in the axial direction can not
It pulls open, then by the rotation to the second lock groove 16 of magnetic locking plate 14, can prevent coupling 1 and nipple 2 from occurring circumferential
It relatively rotating, at this moment coupling 1 and nipple 2 can neither occur axially opposing movement, circumferential relative rotation can not occur,
It avoids in drilling process and coupling 1 occurs and nipple 2 gets loose phenomenon, then by 4 left end of the second drilling rod and nipple 2
Right end connection.
Disassembly process and installation process are on the contrary, details are not described herein.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (7)
1. drill rod connector, including coupling and nipple, the coupling and the nipple rotary clamping, the coupling
It is inside equipped with the first central through hole, is equipped with the second central through hole, the coupling left end and the first drilling rod right end in the nipple
It is detachably fixed connection, the nipple right end is detachably fixed with the second drilling rod left end and connect, it is characterised in that: described external
Head right part is sleeve sections, is ladder shaft-like structure in the middle part of the nipple, the ladder shaft-like structure includes left axle section and right axle
Section, the outer diameter of the left axle section are less than the outer diameter of the right axis section, and the sleeve sections are sleeved in the left axle section and the set
The right side of cylinder section is abutted with the left side of the right axis section, is the first clamping section in the middle part of the coupling, the nipple is left
Portion is the second clamping section compatible with the first clamping section, and the second clamping section includes at least two about described inscribed
Head axisymmetrical arrangement and the clamping block that is separated from each other, are equipped with arcuation card slot on the clamping block outer peripheral surface, in described first
Heart through-hole and the corresponding inner wall of the first clamping section be equipped with along the first central through hole radially arrangement and with the arcuation card slot
The left side of the block matched, the block is equipped with baffle corresponding with the lateral location of the clamping block left end, the set
The circumferential locking for preventing the coupling and nipple from relatively rotating is equipped between cylinder section right end and the right axis section left end
Structure.
2. drill rod connector according to claim 1, it is characterised in that: the circumferential direction locking structure includes magnetic locking
Plate, the sleeve sections right end outer peripheral surface are equipped with the first lock that the sleeve sections axis is adapted and be parallel to magnetic locking plate
Only slot, right axis section left end outer peripheral surface, which is equipped with, to be adapted with the magnetic locking plate and is parallel to the right axis section axis
Second lock groove.
3. drill rod connector according to claim 2, it is characterised in that: the magnetism locking plate inner end and first lock
Only groove bottom is hinged, and the magnetism locking plate outer end is equipped with arc angle.
4. drill rod connector according to claim 1, it is characterised in that: be installed with ring-type on the left side of the clamping block
Seal section, the annular seal section and the nipple coaxial line, it is right that the outer diameter of the annular seal section is less than the block institute
Answer the internal diameter of circumference.
5. drill rod connector according to claim 4, it is characterised in that: the first central through hole left part be equipped with it is described
The compatible sealing bore of annular seal section.
6. drill rod connector according to claim 5, it is characterised in that: the annular seal section right end is shunk to the left
Prismoid section, the sealing bore right end are with the prismoid section to compatible cone hole part.
7. drill rod connector according to claim 6, it is characterised in that: outer peripheral surface is equipped in the middle part of the annular seal section
First annular recess is equipped with the first sealing ring in first annular recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811619678.2A CN109681134A (en) | 2018-12-28 | 2018-12-28 | Drill rod connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811619678.2A CN109681134A (en) | 2018-12-28 | 2018-12-28 | Drill rod connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109681134A true CN109681134A (en) | 2019-04-26 |
Family
ID=66190858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811619678.2A Pending CN109681134A (en) | 2018-12-28 | 2018-12-28 | Drill rod connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109681134A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794695A (en) * | 2020-08-26 | 2020-10-20 | 辽宁工程技术大学 | Quick-connection structure of drilling rod for seismic exploration and butt-jointed drilling equipment |
| CN112049602A (en) * | 2020-10-09 | 2020-12-08 | 中国石油天然气集团有限公司 | Coiled tubing quick connection plugging device and use method |
| CN115807618A (en) * | 2023-02-09 | 2023-03-17 | 常州市宏业基础工程有限公司 | Rotary drilling rig power head with moving structure and drilling method thereof |
-
2018
- 2018-12-28 CN CN201811619678.2A patent/CN109681134A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794695A (en) * | 2020-08-26 | 2020-10-20 | 辽宁工程技术大学 | Quick-connection structure of drilling rod for seismic exploration and butt-jointed drilling equipment |
| CN112049602A (en) * | 2020-10-09 | 2020-12-08 | 中国石油天然气集团有限公司 | Coiled tubing quick connection plugging device and use method |
| CN115807618A (en) * | 2023-02-09 | 2023-03-17 | 常州市宏业基础工程有限公司 | Rotary drilling rig power head with moving structure and drilling method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109681134A (en) | Drill rod connector | |
| US4919560A (en) | Oil well sucker rod | |
| CN103953292B (en) | Fastening gapless type tool joint | |
| CN203175422U (en) | Quick airtight casing thread connector | |
| CN207739951U (en) | A kind of High-strength deepwater landing tool joint | |
| CN204214593U (en) | Pressure ga(u)ge damper | |
| CA2888290C (en) | Superhigh torsional strength, metallic and airtight drillrod coupler | |
| CN100554750C (en) | Hydraulic claw type pipeline coupler | |
| CN103362459B (en) | Arc-shaped conical surface sealed variable tooth wide wedge-type coupling structure and oil well pipe structure | |
| CN205936429U (en) | Buffering formula drilling rod connector | |
| CN201184157Y (en) | Oil well hydraulic unfreezing machine | |
| CN205532578U (en) | High -efficient pit shaft corrosion monitoring link ware | |
| CN205572278U (en) | Narrow and small space inner cover nut loading and unloading frock | |
| CN203008801U (en) | Whole type oil pipe joint with air-tight seal structure | |
| CN210483560U (en) | Non-rotary joint for continuous pipe | |
| CN203796187U (en) | DSHT double-shouldered high torque drill pipe connector | |
| CN207161005U (en) | A kind of flex-stem | |
| CN207160975U (en) | A kind of length compensation boring rod set of ultra-short radius deflecting drilling tool | |
| CN202176310U (en) | Built-in sleeve floating hoop | |
| CN204877301U (en) | Ocean oil drill pipe joint of high antitorque high strength | |
| CN203905839U (en) | Double-ledge anti-torsion anti-bending petroleum drilling rig pipe threaded connecting structure with two ledges sealed | |
| CN219932281U (en) | Oil pan connecting device | |
| CN209354066U (en) | A kind of complete mechanical column of post drill | |
| CN208039560U (en) | A kind of anchor bolt of connection glass curtain wall | |
| CN214221114U (en) | Drill rod connecting structure |
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: 20190426 |