CN203978306U - A kind of Antitwisting release proof hollow sucker rod post - Google Patents
A kind of Antitwisting release proof hollow sucker rod post Download PDFInfo
- Publication number
- CN203978306U CN203978306U CN201420292459.9U CN201420292459U CN203978306U CN 203978306 U CN203978306 U CN 203978306U CN 201420292459 U CN201420292459 U CN 201420292459U CN 203978306 U CN203978306 U CN 203978306U
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- rod
- connector
- hollow
- box cupling
- antitwisting
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Abstract
The utility model is disclosed is a kind of Antitwisting release proof hollow sucker rod post, can be applicable in surface drive single screw pump producing well and uses in the oil well of hollow-rod string, as thermal production well.The utility model comprises hollow rod and box cupling, hollow rod is provided with spanner side, the body of rod two ends of hollow rod are respectively spill connector and convex connector, spill connector is set in box cupling, convex connector is threaded with box cupling, spill connector coordinates with convex connector, produces contrary moment of torsion, has the release effect of moment of torsion of the reversion of offsetting.On the oil well that can effectively stop to cause because of rod string dropout, repair, effectively extend the oil well production cycle, reduce production costs, there is higher use value and good result of use.The utility model is made simple, and cost of manufacture is low, easy to use, economical and practical.
Description
Technical field
The utility model relates to the downhole tool of petroleum industry producing well, and particularly a kind of Antitwisting release proof hollow sucker rod post, can be applicable in surface drive single screw pump producing well and use in the oil well of hollow-rod string, as thermal production well.
Background technology
In the exploitation of the oil reservoir such as surface drive single screw pump oil extraction system is widely used in viscous crude, shakes out in oil field development, gassiness is large.System is mainly comprised of screw pump, rod string and ground drive part, and ground driving force passes to down-hole single-screw (single screw) pump rotor by rod string, and in oil well normal productive process, rod string bears and transmitting torque.Often because shutting down service equipment, well liquid, casing pressure, the reason such as large or maloperation causes rod string to reverse the connecting thread of rod string is released the rod string of working under the operating mode of pit shaft complexity with wellhead back pressure pressure reduction; there is dropout accident; affect the normal production of oil well, increase cost for oil production.
In order to reduce rod string dropout accident rate, part well has been applied coiled rod system, in use find that continuous lever transmitting torque is too small, only has 2800Nm, and need special equipment to remove during coiled rod operation, cost is high, can not meet the need of production of current screw bolt well.
Summary of the invention
The purpose of this utility model is to provide a kind of Antitwisting release proof hollow sucker rod post, solves rod string dropout problem in process of production, reduces the underground work causing thus, reduces production costs.
The utility model is achieved in that a kind of Antitwisting release proof hollow sucker rod post comprises hollow rod and box cupling, hollow rod is provided with spanner side, the body of rod two ends of hollow rod are respectively spill connector and convex connector, spill connector is set in box cupling, convex connector is threaded with box cupling, spill connector coordinates with convex connector, produces contrary moment of torsion, has the release effect of moment of torsion of the reversion of offsetting.
Compare with current hollow-rod string, the beneficial effects of the utility model are: the box cupling of this instrument is connected by standard fastener for sucker rod with convex connector, and spill connector mutually embeds and coordinates with convex connector, realize transmitting torque and anti-tripping function.The utility model can be widely used in, in screw pump oil production well, also can be used in thermal production well.This rod string is arranged between polished rod and screw pump rotor or oil well pump.On the oil well that can effectively stop to cause because of rod string dropout, repair, effectively extend the oil well production cycle, reduce production costs, there is higher use value and good result of use.The utility model is made simple, and cost of manufacture is low, easy to use, economical and practical.
(1), because this rod string can produce contrary moment of torsion between polished rod and screw pump rotor or oil well pump, there is the release effect of moment of torsion of the reversion of offsetting, the dropout of having stopped to the full extent rod string;
(2) improved the compliance that flow string is worked under hole condition complicated and changeable;
(3) can effectively stop to thread off on cause improper and repair operation because of rod string, reduce cost for oil production, reduce worker's labour intensity.
(4) spill connector coordinates the torsional strength increase that makes rod string with the mutual embedding of convex connector, and the ability of transmitting torque can reach 3500K.m.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model spill connector.
Fig. 2 is the structural representation of the utility model convex connector.
Fig. 3 is the structural representation of the utility model box cupling.
Fig. 4 is connection diagram of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing in detail the utility model is described in detail, and unrestricted protection domain of the present utility model.Referring to Fig. 4, a kind of Antitwisting release proof hollow sucker rod post comprises hollow rod and box cupling 4, hollow rod is provided with spanner side 5, the body of rod 2 two ends of hollow rod are respectively spill connector and convex connector, spill connector is set in box cupling 4, convex connector is threaded with box cupling 4, and spill connector coordinates with convex connector.See Fig. 1, spill connector is ladder cylindrical, be provided with and connect recessedly 1, and this connects recessed 1 is trapezoidal groove, between the large and small external diameter of its ladder cylindrical, processes transition inclined-plane.See Fig. 2, the top of convex connector is to connect protrudingly 6, and this connects protruding 6 is that trapezoid boss embeds cooperation with the trapezoidal groove that is connected recessed 1, on the body of rod between connection protruding 6 and spanner side 5, is provided with external screw thread.See Fig. 3, box cupling 4 is cylindrical body, ladder inner circle, and the cylindrical of little inner-diameter end is provided with spanner side, and large diameter end is provided with internal thread 3 and is connected with the external screw thread of convex connector, and little internal diameter coordinates with the transition inclined-plane of spill connector cylindrical with the transition inclined-plane between large diameter.
The utility model is arranged between polished rod and screw pump rotor or oil well pump, by variable buckle joint and polished rod and screw pump rotor or oil well pump, is connected.Internal thread 3 by box cupling 4 reaches spill connector and convex connector to closely cooperate.If there is the reversion moment of torsion that releases in rod string in process of production, the connection in the utility model recessed 1 with connect protruding 6 closely cooperate and can produce contrary moment of torsion, there is the release effect of moment of torsion of the reversion of offsetting, reach the object that prevents rod string dropout.
Claims (4)
1. an Antitwisting release proof hollow sucker rod post, comprise hollow rod and box cupling, hollow rod is provided with spanner side, it is characterized in that, the body of rod two ends of hollow rod are respectively spill connector and convex connector, spill connector is set in box cupling, and convex connector is threaded with box cupling, and spill connector coordinates with convex connector.
2. a kind of Antitwisting release proof hollow sucker rod post as claimed in claim 1, is characterized in that, described spill connector is ladder cylindrical, be provided with and connect recessedly, and this connection is recessed is trapezoidal groove, between the large and small external diameter of its ladder cylindrical, processes transition inclined-plane.
3. a kind of Antitwisting release proof hollow sucker rod post as claimed in claim 1, it is characterized in that, the top of described convex connector is that connection is protruding, and this connection is protruding is that trapezoid boss embeds cooperation with being connected recessed trapezoidal groove, on the body of rod connecting between protruding and spanner side, is provided with external screw thread.
4. a kind of Antitwisting release proof hollow sucker rod post as claimed in claim 1, it is characterized in that, described box cupling is cylindrical body, ladder inner circle, the cylindrical of little inner-diameter end is provided with spanner side, large diameter end is provided with internal thread and is connected with the external screw thread of convex connector, and little internal diameter coordinates with the transition inclined-plane of spill connector cylindrical with the transition inclined-plane between large diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420292459.9U CN203978306U (en) | 2014-06-04 | 2014-06-04 | A kind of Antitwisting release proof hollow sucker rod post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420292459.9U CN203978306U (en) | 2014-06-04 | 2014-06-04 | A kind of Antitwisting release proof hollow sucker rod post |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978306U true CN203978306U (en) | 2014-12-03 |
Family
ID=51975765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420292459.9U Expired - Fee Related CN203978306U (en) | 2014-06-04 | 2014-06-04 | A kind of Antitwisting release proof hollow sucker rod post |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978306U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625953A (en) * | 2016-03-07 | 2016-06-01 | 江苏新海石化有限公司 | Sucker rod with torsion resisting function |
| CN106643450A (en) * | 2015-10-30 | 2017-05-10 | 北京精密机电控制设备研究所 | Micro-stroke, double-redundancy torsion-preventive LVDT displacement sensor |
-
2014
- 2014-06-04 CN CN201420292459.9U patent/CN203978306U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643450A (en) * | 2015-10-30 | 2017-05-10 | 北京精密机电控制设备研究所 | Micro-stroke, double-redundancy torsion-preventive LVDT displacement sensor |
| CN105625953A (en) * | 2016-03-07 | 2016-06-01 | 江苏新海石化有限公司 | Sucker rod with torsion resisting function |
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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 |
Granted publication date: 20141203 Termination date: 20160604 |