CN203925319U - Rotatable sucker rod snubber - Google Patents
Rotatable sucker rod snubber Download PDFInfo
- Publication number
- CN203925319U CN203925319U CN201420322091.6U CN201420322091U CN203925319U CN 203925319 U CN203925319 U CN 203925319U CN 201420322091 U CN201420322091 U CN 201420322091U CN 203925319 U CN203925319 U CN 203925319U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- top connection
- rod
- axial hole
- lower contact
- 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.)
- Expired - Lifetime
Links
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses the rotatable sucker rod snubber of one in pumping tool field, comprise top connection and lower contact, described top connection is the cylindrical of hollow, top connection center is provided with axial hole, the internal thread that is provided with suitable for reading of axial hole, the lower end of axial hole is provided with inside radial protrusion, and in axial hole, being provided with can axially movable connecting rod, stretch out from top connection lower end connecting rod lower end, and lower contact is connected to the lower end of connecting rod; Connecting rod upper end is provided with one and expands portion, expands the downside of portion and the upside of described radial protrusion to be the sphere of mutual adaptation.When work, it is connected on rod string through top connection and lower contact, on whole rod string, space set is multiple, when rod string is descending while being hampered, lower contact promotes connecting rod up segment distance in top connection, plays cushioning effect, can avoid to a certain extent rod string bending; Between connecting rod and top connection, certain angle be can rotate or depart from, hole deviation, eccentric wear problem solved.
Description
Technical field
The utility model relates to a kind of pumping tool, and particularly a kind of rotatable pumping rod connecting device belongs to oil exploitation field of mechanical technique.
Background technology
In oil exploitation process, sucker rod moves up and down in oil pipe, the casing deformation that the hole deviation that need to cause because of drilling well factor or geology and deviated directional drilling formation creep cause all can make tubing bending, its body of rod and joint all will produce friction with tube inner wall, and the friction of joint and tube inner wall is more outstanding, thereby wearing and tearing, especially deep-well, high angle hole, horizontal well of easily causing tube inner wall, sucker rod body and joint etc. are even more serious.In execute-in-place, find, most rod collars see it is intact from a side, and opposite side heavy wear.It is that bar is disconnected de-, pipe leaks the well of lying that pumpingh well side-abrasion of rod string causes the most direct consequence, has affected oily well yield, has directly affected the economic benefit of oil well, simultaneously, the expense of changing operation on oil pipe bar, the expense of oil pumping rod of oil tube, is all to cause one of reason that cost is high.Sucker rod is in the time of down stroke, and due to pump barrel wax deposition, Sha Ka, or due to hole deviation, whole sucker rod is rigidly connected, and easily causes sucker rod twist and warping, seriously can cause rod broken.Due to hole deviation, whole sucker rod produces firmly curved, directly the life-span of sucker rod sucker rod.
Utility model content
The purpose of this utility model is to provide a kind of rotatable sucker rod snubber, while making it be connected on rod string, can reduce rod string wearing and tearing and bending possibility.
The purpose of this utility model is achieved in that a kind of rotatable sucker rod snubber, comprise top connection and lower contact, described top connection is the cylindrical of hollow, top connection center is provided with axial hole, the internal thread that is provided with suitable for reading of axial hole, the lower end of axial hole is provided with inside radial protrusion, and in axial hole, being provided with can axially movable connecting rod, stretch out from top connection lower end described connecting rod lower end, and described lower contact is connected to the lower end of connecting rod; Connecting rod upper end is provided with one and expands portion, expands the downside of portion and the upside of described radial protrusion to be the sphere of mutual adaptation.
When the utility model work, it is connected on rod string through top connection and lower contact, on whole rod string, space set is multiple, when rod string is descending while being hampered, lower contact promotes connecting rod up segment distance in top connection, play cushioning effect, can avoid to a certain extent rigid stress to cause the problem of rod string bending; Owing to can rotating or depart from certain angle between connecting rod and top connection, solve hole deviation problem, solved eccentric wear problem simultaneously.Compared with prior art, the utility model is simple in structure, uses reliably, can reduce rod string wearing and tearing and bending possibility, makes its work more reliable.
As further improvement of the utility model, described top connection upper side is provided with balance pipe.Rod string is descending while being hampered, lower contact promotes connecting rod up segment distance in top connection, and balance pipe can keep axial hole internal and external pressure balance, avoids sealing liquid to form liquid resistance.Balance pipe can be arranged with two.
For ensureing that connecting rod can have larger deflection leeway, the aperture that radial protrusion center appearance connecting rod passes is up-small and down-big horn mouth.
For further guarantee lower contact connection is reliable, be difficult for threading off, described lower contact is connected with the external screw thread of connecting rod lower end through internal thread, and lower contact side is provided with the holding screw of conflict in the external screw thread side of connecting rod.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Wherein, 1 balance pipe, 2 top connections, 201,402 spheres, 202 radial protrusions, 3 axial holes, 4 connecting rods, 401 expand portion, 5 holding screws, 6 lower contacts, 7 horn mouths.
Detailed description of the invention
As shown in Figure 1, for rotatable sucker rod snubber, comprise top connection 2 and lower contact 6, top connection 2 is the cylindrical of hollow, top connection 2 centers are provided with axial hole 3, the internal thread that is provided with suitable for reading of axial hole 3, for being connected with top rod string, the lower end of axial hole 3 is provided with inside radial protrusion 201, in axial hole 3, being provided with can axially movable connecting rod 4, stretch out from top connection 2 lower ends connecting rod 4 lower ends, and lower contact 6 is connected with the external screw thread of connecting rod 4 lower ends through internal thread, and lower contact 6 sides are provided with the holding screw 5 of conflict in the external screw thread side of connecting rod 4; Lower contact 6 is for being connected with below rod string; Connecting rod 4 upper ends are provided with one and expand portion 401, expand the downside of portion 401 and the upside of radial protrusion 202 to be the sphere 201,402 of mutual adaptation; Top connection 2 upper sides are provided with balance pipe 1, and balance pipe 1 is arranged with two.The aperture that radial protrusion center appearance connecting rod 4 passes is up-small and down-big horn mouth 7.
When work, this device is connected on rod string, while carrying on rod string, sphere combines, and bears larger pulling force, and the cooperation of sphere 201,402 makes rod string can adapt to the oil well of constant slope; At rod string, when descending, while running into the resistance of down-hole liquid, lower contact 6 promotes connecting rod 4 at the interior up segment distance of top connection 2, plays cushioning effect, can avoid to a certain extent rod string bending.
The utility model is not limited to above-described embodiment; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection domain of the present utility model.
Claims (5)
1. a rotatable sucker rod snubber, comprise top connection and lower contact, it is characterized in that described top connection is the cylindrical of hollow, top connection center is provided with axial hole, the internal thread that is provided with suitable for reading of axial hole, the lower end of axial hole is provided with inside radial protrusion, and in axial hole, being provided with can axially movable connecting rod, stretch out from top connection lower end described connecting rod lower end, and described lower contact is connected to the lower end of connecting rod; Connecting rod upper end is provided with one and expands portion, expands the downside of portion and the upside of described radial protrusion to be the sphere of mutual adaptation.
2. rotatable sucker rod snubber according to claim 1, is characterized in that top connection upper side is provided with balance pipe.
3. rotatable sucker rod snubber according to claim 2, is characterized in that balance pipe is arranged with two.
4. according to the rotatable sucker rod snubber described in claim 1-3 any one, it is characterized in that the aperture that radial protrusion center appearance connecting rod passes is up-small and down-big horn mouth.
5. according to the rotatable sucker rod snubber described in claim 1-3 any one, it is characterized in that described lower contact is connected with the external screw thread of connecting rod lower end through internal thread, lower contact side is provided with the holding screw of conflict in the external screw thread side of connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322091.6U CN203925319U (en) | 2014-06-17 | 2014-06-17 | Rotatable sucker rod snubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322091.6U CN203925319U (en) | 2014-06-17 | 2014-06-17 | Rotatable sucker rod snubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925319U true CN203925319U (en) | 2014-11-05 |
Family
ID=51821148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420322091.6U Expired - Lifetime CN203925319U (en) | 2014-06-17 | 2014-06-17 | Rotatable sucker rod snubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203925319U (en) |
-
2014
- 2014-06-17 CN CN201420322091.6U patent/CN203925319U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |