CN2383960Y - Universal-joint for well appliances of oil field - Google Patents
Universal-joint for well appliances of oil field Download PDFInfo
- Publication number
- CN2383960Y CN2383960Y CN 99221145 CN99221145U CN2383960Y CN 2383960 Y CN2383960 Y CN 2383960Y CN 99221145 CN99221145 CN 99221145 CN 99221145 U CN99221145 U CN 99221145U CN 2383960 Y CN2383960 Y CN 2383960Y
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- CN
- China
- Prior art keywords
- ball
- cavity
- bulb
- oil field
- universal joint
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- 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 - Fee Related
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Abstract
The utility model relates to a universal-joint for the well appliances of the oil field, belonging to the classes of the coupling and the joint of the oil well pipe. The utility model is composed of an upper joint, a ball cavity body, a pressing cap, a pressing ring, a sphere sealing element, a ball head body and a torque pin. The ball head on the upper end of the ball head body is installed on the ball cavity on the lower part of the ball cavity body, and the ball head and the ball cavity are limited to rotate together by the torque pin. The sphere sealing element and the pressing ring are arranged between the upper half part of the ball head and the inner surface of the ball cavity, the upper part of the compression ring is the pressing cap which is installed in the ball cavity body, and the upper joint is installed in the upper end of the ball cavity body. The universal joint is connected with the well sand control device or other well apparatus to go down to the well together, and can easily pass through the deformed sleeve tube and the flexural section of the well. The structure is simple, the operation is reliable, and the commonality is great.
Description
The utility model relates to oil well pipe box cupling, joint, is a kind of universal joint that the oil field downhole tools connects usefulness.
For various reasons, make the casing deformation or the bending of some oil wells.Because the external diameter of sand control device and other special-purpose downhole tools is generally all greater than the oil pipe external diameter, and length is bigger, does not have flexible, so be difficult to distortion or bending section by sleeve pipe, the position that requires in can't lower going-into-well, it is idle to cause some oil wells to stop production, and causes very big waste.Patent documentation by retrieval, " adjustable down-hole bent sub device " (patent No. 96216395.3), " oil drilling articulated joint " (patent No. 96240043.2) all can only be used for drillng operation, and the oil producing operation after can not being used to bring in.
The purpose of this utility model is to produce urgent need in order to solve the oil field oil recovery, provides a kind of oil field downhole tools to connect universal joint.This universal joint and down-hole sand control device or other downhole tools coupled together together go into the well.Because the autoregulation of universal joint can make downhole tools can arrive the position that requires smoothly by the distortion or the bending section of sleeve pipe, keeps the oil well ordinary production.
Above-mentioned purpose is realized by following technical proposals:
The oil field downhole tools connects universal joint and mainly comprises ball cavity and bulb body two large divisions, and its concrete structure is made up of top connection, ball cavity, pressure cap, pressure ring, ball face sealing spare, bulb body and moment of torsion pin.The first half is the ball cavity, and Lower Half is the bulb body.The bulb of bulb body upper end is contained in the ball chamber of ball cavity bottom, and bulb is identical with the sphere radian in ball chamber.The moment of torsion pin inserts the bulb groove from wall bottom, ball chamber radial hole bulb is limited in the ball chamber, makes ball cavity and the bulb physical efficiency transfer torque that together sways.Between the bulb first half and the ball inner cavity surface ball face sealing spare and pressure ring are arranged.It more than the pressure ring pressure cap that is contained in middle part in the ball cavity.The ball cavity is loaded onto joint in the upper end.
The bulb body comprises bulb and straight-bar, and two parts are an integral body, and its inside is cylindrical cavity.The bulb Lower Half has the groove of 1～3 slotting moment of torsion pin.The straight-bar hypomere has outer cone thread.
Ball cavity profile is cylindrical, and interior is cavity.Its underpart is the ball chamber, and the radial hole of 1～3 slotting moment of torsion pin is arranged at wall bottom, ball chamber.Its lower port is a taper seat, and collar extension is greater than internal orifice.Be cylindrical cavity more than the ball chamber, this inner chamber has the internal thread that matches with the pressure cap external screw thread.Its top is conical cavity, and this inner chamber has the inside tapered thread that matches with the top connection outer cone thread.
The top connection profile first half is cylindrical, and Lower Half is conical, and interior is cavity.The first half has inside tapered thread, and Lower Half has outer cone thread.
The pressure ring profile is cylindrical, and interior is cavity.Its lower port is taper seat or sphere, and collar extension is greater than internal orifice.
Ball face sealing spare profile is conical, and interior is spherical cavity, following Bao Shanghou.Adopt the oil resistant high-temperature resistant rubber, or nylon, or the tetrafluoroethene material is made.
The oil field downhole tools of making according to technique scheme and technical characterictic is connected universal joint, is connected with down-hole sand control device or other downhole tools when using, together in the lower going-into-well.When arriving casing deformation or curved portion, this universal joint can turn to automatically with cannula cavity shape and wellbore trajectory under the effect of tubing string pressure, passes through smoothly.When normal oil recovery was produced, it is poor that ball face sealing spare wherein can bear the oil pipe external and internal pressure, and can stop that oil reservoir sand enters in the universal joint.When tripping out downhole tools such as universal joint and sand control device when needs, the moment of torsion pin can transmit turning moment, and integral body is together rotated, and downhole tools such as sand control device are tripped out easily.This gimbal structure is simply compact, processes easily and installs and removes, and length is very short, occupies little space, and is safe and reliable, and versatility is good, is a kind of comparatively ideal down-hole mating connector tool.
Accompanying drawing is that overall structure of the present utility model is partly cutd open schematic diagram.
In conjunction with the accompanying drawings embodiment is described below:
In the accompanying drawing, the 1st, top connection, the 2nd, ball cavity, the 3rd, pressure cap, the 4th, pressure ring, the 5th, ball face sealing spare, the 6th, bulb body, the 7th, moment of torsion pin.A is the ball chamber, and B is the moment of torsion cotter slot of bulb, and C is a ball cavity lower port.
The bulb body two large divisions who comprises first half ball cavity and Lower Half by the integral body of visible this universal joint of accompanying drawing.On inside tapered thread is arranged, down outer cone thread is arranged, can be connected with downhole tools is supporting.During this universal joint assembling, the straight bar section with bulb body 6 inserts from the top of ball cavity 2 earlier, makes bulb partly enter ball chamber A, and touches the ball cavity wall.Refill moment of torsion pin 7, and make its end face and groove bottom keep certain distance, can transfer torque, do not influence bulb swing arbitrarily in the ball chamber again.Refill ball face sealing spare 5 and pressure ring 4.Refill upper pressing cap 3, and adjust axial compression, make the contact pressure size to fit of 5 pairs of bulbs of ball face sealing spare, not loose not tight.Install joint 1 then.At last the outer face of moment of torsion pin 7 is sealed with glue, prevent to get loose.
Claims (6)
1, a kind of oil field downhole tools connects universal joint, mainly comprise ball cavity and bulb body two large divisions, it is characterized in that by top connection, the ball cavity, pressure cap, pressure ring, ball face sealing spare, bulb body and moment of torsion pin are formed, the first half is the ball cavity, Lower Half is the bulb body, the bulb of bulb body upper end is contained in the ball chamber of ball cavity bottom, bulb is identical with the sphere radian in ball chamber, the moment of torsion pin inserts the bulb groove from wall bottom, ball chamber radial hole bulb is limited in the ball chamber, make ball cavity and the bulb physical efficiency transfer torque that together sways, between the bulb first half and the ball inner cavity surface ball face sealing spare and pressure ring are arranged, be the pressure cap that is contained in middle part in the ball cavity more than the pressure ring, the ball cavity is loaded onto joint in the upper end.
2, downhole tools connection universal joint in oil field according to claim 1, it is characterized in that the bulb body comprises bulb and straight-bar, two parts are an integral body, and its inside is cylindrical cavity, the bulb Lower Half has the groove of 1～3 slotting moment of torsion pin, and the straight-bar hypomere has outer cone thread.
3, downhole tools connection universal joint in oil field according to claim 1, it is characterized in that ball cavity profile is cylindrical, interior is cavity, and its underpart is the ball chamber, and the radial hole of 1～3 slotting moment of torsion pin is arranged at wall bottom, ball chamber, its lower port is a taper seat, the collar extension imperial palace is young, is cylindrical cavity more than the ball chamber, and this inner chamber has the internal thread that matches with the pressure cap external screw thread, its top is conical cavity, and this inner chamber has the inside tapered thread that matches with the top connection outer cone thread.
4, downhole tools connection universal joint in oil field according to claim 1 is characterized in that the top connection profile first half is cylindrical, and Lower Half is conical, and interior is cavity.The first half has inside tapered thread, and Lower Half has outer cone thread.
5, downhole tools connection universal joint in oil field according to claim 1 is characterized in that the pressure ring profile is cylindrical, and interior is cavity.Its lower port is taper seat or sphere, and collar extension is greater than internal orifice.
6, downhole tools connection universal joint in oil field according to claim 1 is characterized in that ball face sealing spare profile for conical, and interior is sphere or cone cavity, following Bao Shanghou.Adopt the oil resistant high-temperature resistant rubber, or nylon, or the tetrafluoroethene material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99221145 CN2383960Y (en) | 1999-06-09 | 1999-06-09 | Universal-joint for well appliances of oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99221145 CN2383960Y (en) | 1999-06-09 | 1999-06-09 | Universal-joint for well appliances of oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2383960Y true CN2383960Y (en) | 2000-06-21 |
Family
ID=34011765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99221145 Expired - Fee Related CN2383960Y (en) | 1999-06-09 | 1999-06-09 | Universal-joint for well appliances of oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2383960Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639905A (en) * | 2017-01-24 | 2017-05-10 | 中国石油天然气集团公司 | Abnormal-diameter continuous oil pipe butt joint device and mounting method of butt joint device as well as abnormal-diameter oil pipe mounting method |
| CN108442909A (en) * | 2018-04-02 | 2018-08-24 | 王景桐 | Oil extraction system based on insulated tubing, the heat-insulated hollow rod of coating |
-
1999
- 1999-06-09 CN CN 99221145 patent/CN2383960Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639905A (en) * | 2017-01-24 | 2017-05-10 | 中国石油天然气集团公司 | Abnormal-diameter continuous oil pipe butt joint device and mounting method of butt joint device as well as abnormal-diameter oil pipe mounting method |
| CN106639905B (en) * | 2017-01-24 | 2018-10-12 | 中国石油天然气集团公司 | Reducing coiled tubing docking facilities and its installation method and reducing oil pipe installation method |
| US11149496B2 (en) | 2017-01-24 | 2021-10-19 | China National Petroleum Corporation | Coupling apparatus for coiled tubings of different diameters, installing method for coupling apparatus, and installing method for tubings of different diameters using coupling apparatus |
| CN108442909A (en) * | 2018-04-02 | 2018-08-24 | 王景桐 | Oil extraction system based on insulated tubing, the heat-insulated hollow rod of coating |
| CN108442909B (en) * | 2018-04-02 | 2024-01-05 | 王景桐 | Oil extraction system based on heat-insulating oil pipe and coating heat-insulating hollow sucker rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |