CN206928924U - A kind of horizontal well coring tool - Google Patents
A kind of horizontal well coring tool Download PDFInfo
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- CN206928924U CN206928924U CN201720425799.8U CN201720425799U CN206928924U CN 206928924 U CN206928924 U CN 206928924U CN 201720425799 U CN201720425799 U CN 201720425799U CN 206928924 U CN206928924 U CN 206928924U
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- bearing
- stabilizer
- inner cylinder
- mandrel
- horizontal well
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Abstract
The utility model discloses a kind of horizontal well coring tool, including hanging pup joint, rotation assembly, upper stabilizer, outer barrel, inner cylinder, lower stabilizer, core grabber assembly, inner cylinder stabilizer and drill bit, the end of described hanging pup joint is fixedly connected with bearing box, rotation assembly includes mandrel, thrust bearing is provided between mandrel and bearing box, one end of thrust bearing is withstood on the step surface of mandrel, the end face of other end top hanging pup joint, radial bearing is additionally provided between described mandrel and hanging pup joint, distance member is provided between radial bearing and thrust bearing, the axial steel wire back-up ring for positioning radial bearing is additionally provided with the hanging pup joint of the opposite side of radial bearing；Described inner cylinder stabilizer is arranged with described core grabber assembly.Horizontal well coring tool of the present utility model, cores suitable for horizontal well, keeps inner cylinder placed in the middle, cores more convenient.
Description
Technical field
The utility model belongs to drilling and coring delivery technical field, and in particular to a kind of horizontal well coring tool.
Background technology
With the development of petroleum drilling technology, HDP has become a kind of ripe drilling technology and obtained wide
General utilization, while Horizontal Well Coring Technology also obtains certain utilization, but at present horizontal well core typically use it is conventional
Coring tool.Coring tool is in horizontality during coring, and due to deadweight, instrument inner cylinder is close to outer tube inner wall, inner cylinder
It is not placed in the middle, inner cylinder and core bit decentraction, cause rock core to enter and be obstructed, difficult forming, core recovery is low.Simultaneously because from
Weight, mandrel are close to the upper and lower two parts of ball bearing, due to frictional force so that meeting mandrel follows outer barrel to rotate together, within causing
Cylinder follows outer barrel to rotate together, increases rock core into inner cylinder, the low situation of the stifled heart, the mill heart, yield rate easily occurs.
Utility model content
The purpose of this utility model is：For problems of the prior art, there is provided a kind of horizontal well is cored workpiece,
While making inner cylinder holding placed in the middle, moreover it is possible to realize the function of bitubular single action, ensure that rock core smoothly enters inner cylinder.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of horizontal well coring tool, including hanging pup joint, rotation assembly, upper stabilizer, outer barrel, inner cylinder, lower stabilizer,
Core grabber assembly, inner cylinder stabilizer and drill bit, the outside portion of hanging pup joint are fixedly connected with described upper stabilizer, upper stabilizer,
Outer barrel, lower stabilizer and drill bit are fixedly connected sequentially, the rotation assembly described in the inside portion connection of hanging pup joint, rotation assembly,
Inner cylinder, core grabber assembly are fixedly connected sequentially；
The end of described hanging pup joint is fixedly connected with bearing box, and rotation assembly includes mandrel, mandrel and bearing box it
Between be provided with thrust bearing, one end of thrust bearing is withstood on the step surface of mandrel, the end face of other end top hanging pup joint, described
Mandrel and hanging pup joint between be additionally provided with radial bearing, distance member is provided between radial bearing and thrust bearing, to
The axial steel wire back-up ring for positioning radial bearing is additionally provided with the hanging pup joint for the opposite side that mandrel is held；
Described inner cylinder stabilizer is arranged with described core grabber assembly.
Preferably, described inner cylinder stabilizer uses roller bearing, and roller bearing includes bearing block, and bearing block is circumferentially set
The bearing pin of several uniform intervals distribution is equipped with, bearing pin is arranged with roller along the axial arranged of bearing block on bearing pin.
Preferably, described inner cylinder stabilizer uses stabilizer body, wiper block and hard alloy blocks, stabilizer body set
It is located in core grabber assembly, the circumferencial direction of stabilizer body is provided with least two dovetail groove portions being spacedly distributed, helped
Positive block is embedded in described dovetail groove portion, and described hard alloy blocks surfacing is connected on wiper block lateral surface.
Preferably, described distance member includes being embedded the semi-ring on the excircle of mandrel, and is set on semi-ring
Steel radial back-up ring.
Preferably, described radial bearing uses radial contact bearing.
Preferably, described thrust bearing uses axial contact bearing.
By adopting the above-described technical solution, the beneficial effects of the utility model are：
1. by the combination that thrust bearing and radial bearing are used between mandrel and hanging pup joint so that work of coring
The rotation assembly of tool, which is applicable not only to straight well, cores and is also applied for horizontal well and cores, and is revolved when straight well is cored by thrust bearing
Turn support, rotation support carried out by radial bearing when horizontal well is cored, ensure that rotation assembly can smoothly rotate, mandrel with
It will not be linked between outer barrel, avoid the low situation of the stifled heart, the mill heart, yield rate and occur；
2. by being arranged inner cylinder stabilizer in the core grabber assembly in drill bit, ensure that rock core and inner cylinder are in center all the time
Position, effectively can solve during horizontal well is cored, inner cylinder can not between two parties, enter the problem of heart is difficult, yield rate is low, improve rock
Heart yield rate, while inner cylinder and outer tube inner wall phase mutual friction can be prevented, improve inner cylinder service life.
Brief description of the drawings
Fig. 1 is the horizontal well coring tool main view half sectional view of embodiment 1 of the present utility model.
Fig. 2 is the horizontal well coring tool half portion main view half sectional view of embodiment 1 of the present utility model.
Fig. 3 is another half portion main view half sectional view of horizontal well coring tool of embodiment 1 of the present utility model.
Fig. 4 is the main view half sectional view of the rotation assembly of embodiment 1 of the present utility model.
Fig. 5 is the inner cylinder stabilizer main view half sectional view of embodiment 1 of the present utility model.
Fig. 6 is the inner cylinder stabilizer side view half sectional view of embodiment 1 of the present utility model.
Fig. 7 is the horizontal well coring tool part main view half sectional view of embodiment 2 of the present utility model.
Fig. 8 is Fig. 7 A-A sectional drawings.
Reference：1- hanging pup joints, 101- bearing boxs, 2- rotation assembly, 21- axial steel wire back-up rings, 22- is to mandrel
Hold, 23- semi-rings, 24- steel radial back-up rings, 25- thrust bearings, 26- mandrels, the upper stabilizers of 3-, 4- outer barrels, 5- inner cylinders, under 6-
Stabilizer, 7- drill bits, 8- core grabber assemblies, 9- inner cylinder stabilizers；
901- bearing blocks, 902- rollers, 903- bearing pins；
911- stabilizer bodies, 912- wiper blocks, 913- hard alloy blocks.
Embodiment
Embodiment 1：
Reference picture 1-6, a kind of horizontal well coring tool, including hanging pup joint 1, rotation assembly 2, upper stabilizer 3, outer barrel 4,
Inner cylinder 5, lower stabilizer 6, core grabber assembly 8, inner cylinder stabilizer 9 and drill bit 7, the outside portion of hanging pup joint 1 are fixedly connected described
Upper stabilizer 3, upper stabilizer 3, outer barrel 4, lower stabilizer 6 and drill bit 7 be fixedly connected sequentially, and the inside portion of hanging pup joint 1 connects
Described rotation assembly 2 is connect, rotation assembly 2, inner cylinder 5, core grabber assembly 8 are fixedly connected sequentially.The upper end nut of hanging pup joint 1
Button is connected with drilling rod, drives hanging pup joint 1 to rotate by drilling rod, when hanging pup joint 1 rotates, drives upper stabilizer 3, outer barrel successively
4th, lower stabilizer 6 and drill bit 7 rotate, and are rotated by drill bit 7 and realize drilling；Inner cylinder 5 is connected by rotation assembly 2 and hanging pup joint 1
Connect, so as to which the state of geo-stationary be presented, the core grabber assembly 8 being connected with inner cylinder 5 is also at the state of geo-stationary, so as to real
Now firmly grasp rock core and cut the heart.
Reference picture 4, the end of hanging pup joint 1 are fixedly connected with bearing box 101, and rotation assembly 2 includes mandrel 26, mandrel 26
It is provided with thrust bearing 25 between bearing box 101, one end of thrust bearing 25 is withstood on the step surface of mandrel 26, other end top
The end face of hanging pup joint 1, radial bearing 22 is additionally provided between described mandrel 26 and hanging pup joint 1, radial bearing 22 is with pushing away
Distance member is provided between power bearing 25, be additionally provided with the hanging pup joint 1 of the opposite side of radial bearing 22 for position to
Mandrel holds 22 axial steel wire back-up ring 21.Distance member includes being embedded the semi-ring 23 on the excircle of mandrel 26, and is arranged
Steel radial back-up ring 24 on semi-ring 23.Radial bearing 22 preferably uses radial contact bearing；Thrust bearing 25 preferably uses
Axial contact bearing.
When straight well is cored, the transmission of axial force is realized between hanging pup joint 1 and mandrel 26 by thrust bearing 25, is hung
When joint rotates, it will not be rotated together with mandrel 26；When horizontal well is cored, pass through between hanging pup joint 1 and mandrel 26 to
Mandrel holds 22 transmission for realizing radial load, when hanging pup joint 1 rotates, also will not together be rotated with mandrel 26.Pass through thrust axis
Hold 25 and radial bearing 22 be applied in combination, hanging pup joint 1 can only rotate when rotating with outer barrel 4, and outer barrel 4 rotates drives brill again
First 7 rotate realization drilling work；Mandrel 26 connects inner cylinder 5, and inner cylinder 5 is connected with core grabber assembly 8, real by core grabber assembly 8
Now firmly grasp rock core and cut the heart, inside and outside part will not form linkage, so as to smoothly complete drilling and coring delivery work.
Reference picture 5, Fig. 6, inner cylinder stabilizer 9 is arranged with core grabber assembly 8.Inner cylinder stabilizer 9 uses the axle of roller 902
Holding, the bearing of roller 902 includes bearing block 901, the circumferentially arranged bearing pin 903 for having several uniform intervals to be distributed of bearing block 901,
Bearing pin 903 is arranged with roller 902 along the axial arranged of bearing block 901 on bearing pin 903.
During horizontal drilling is cored, the inner cylinder stabilizer 9 of inner cylinder 5 and rock core pawl seat in the bearing arrangement of roller 902
Centralizing function under, all the time in center, keep placed in the middle, effectively solve during horizontal well is cored, inner cylinder 5 can not occupy
In, enter the problem of heart is difficult, yield rate is low, improve core recovery, while inner cylinder 5 and the inwall phase mutual friction of outer barrel 4 can be prevented,
Improve the service life of inner cylinder 5.
Embodiment 2：
Reference picture 7, Fig. 8, the present embodiment in place of the difference of embodiment 1 with being：
Inner cylinder stabilizer 9 is using stabilizer body 911, wiper block 912 and hard alloy blocks 913,911 sets of stabilizer body
It is located in core grabber assembly 8, the circumferencial direction of stabilizer body 911 is provided with least two dovetail grooves being spacedly distributed
Portion, wiper block 912 are embedded in described dovetail groove portion, and the described surfacing of hard alloy blocks 913 is connected to the outside of wiper block 912
On face.
Wiper block 912 is installed to dovetail groove portion on stabilizer body 911 by inner cylinder stabilizer 9 first in installation process
In, the surface of wiper block 912 is that surfacing has hard alloy blocks 913, and inner cylinder stabilizer 9 is sleeved on the bottom of core grabber assembly 8, together with
Inner cylinder 5 is encased in drill bit 7 together, and one end of inner cylinder stabilizer 9 is withstood on the step surface of rock core pawl seat of core grabber assembly 8,
The other end is withstood on the axial end of the inner side of drill bit 7.
During horizontal drilling is cored, the wiper block 9126 of inner cylinder 5 and core grabber assembly 8 in inner cylinder stabilizer 9
Under centralizing function, all the time in center, keep placed in the middle, effectively solve during horizontal well is cored, inner cylinder 5 can not occupy
In, enter the problem of heart is difficult, yield rate is low, improve core recovery, while inner cylinder 5 and the inwall phase mutual friction of outer barrel 4 can be prevented,
Improve the service life of inner cylinder 5.
Claims (6)
- A kind of 1. horizontal well coring tool, it is characterised in that including hanging pup joint (1), rotation assembly (2), upper stabilizer (3), Outer barrel (4), inner cylinder (5), lower stabilizer (6), core grabber assembly (8), inner cylinder stabilizer (9) and drill bit (7), hanging pup joint (1) Outside portion be fixedly connected with described upper stabilizer (3), upper stabilizer (3), outer barrel (4), lower stabilizer (6) and drill bit (7) according to It is secondary to be fixedly connected, the rotation assembly (2) described in the inside portion connection of hanging pup joint (1), rotation assembly (2), inner cylinder (5), rock core Claw assembly (8) is fixedly connected sequentially；The end of described hanging pup joint (1) is fixedly connected with bearing box (101), and rotation assembly (2) includes mandrel (26), mandrel (26) thrust bearing (25) is provided between bearing box (101), one end of thrust bearing (25) withstands on the step of mandrel (26) On face, the end face of other end top hanging pup joint (1), be additionally provided between described mandrel (26) and hanging pup joint (1) to mandrel Hold (22), distance member is provided between radial bearing (22) and thrust bearing (25), the opposite side of radial bearing (22) hangs Hang the axial steel wire back-up ring (21) being additionally provided with pipe nipple (1) for positioning radial bearing (22)；Described inner cylinder stabilizer (9) is arranged with described core grabber assembly (8).
- 2. horizontal well coring tool according to claim 1, it is characterised in that described inner cylinder stabilizer (9) is using rolling Post (902) bearing, roller (902) bearing include bearing block (901), bearing block (901) is circumferentially arranged have several uniform between Every the bearing pin (903) of distribution, bearing pin (903) is arranged with roller along the axial arranged of bearing block (901), bearing pin on (903) (902)。
- 3. horizontal well coring tool according to claim 1, it is characterised in that described inner cylinder stabilizer (9) is using steady Determine device body (911), wiper block (912) and hard alloy blocks (913), stabilizer body (911) is set in core grabber assembly (8) On, the circumferencial direction of stabilizer body (911) is provided with least two dovetail groove portions being spacedly distributed, wiper block (912) It is embedded in described dovetail groove portion, described hard alloy blocks (913) surfacing is connected on wiper block (912) lateral surface.
- 4. horizontal well coring tool according to claim 1, it is characterised in that described distance member includes being embedded in the heart Semi-ring (23) on the excircle of axle (26), and the steel radial back-up ring (24) being set on semi-ring (23).
- 5. horizontal well coring tool according to claim 1, it is characterised in that described radial bearing (22) is using radially Contact bearing.
- 6. horizontal well coring tool according to claim 1, it is characterised in that described thrust bearing (25) is using axially Contact bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720425799.8U CN206928924U (en) | 2017-04-21 | 2017-04-21 | A kind of horizontal well coring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720425799.8U CN206928924U (en) | 2017-04-21 | 2017-04-21 | A kind of horizontal well coring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206928924U true CN206928924U (en) | 2018-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720425799.8U Active CN206928924U (en) | 2017-04-21 | 2017-04-21 | A kind of horizontal well coring tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN206928924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060676A (en) * | 2017-04-21 | 2017-08-18 | 四川川庆石油钻采科技有限公司 | A kind of horizontal well coring tool |
-
2017
- 2017-04-21 CN CN201720425799.8U patent/CN206928924U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060676A (en) * | 2017-04-21 | 2017-08-18 | 四川川庆石油钻采科技有限公司 | A kind of horizontal well coring tool |
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