CN2695617Y - Casing pump bouble-stage pneumatic anti-blowout box for oil production - Google Patents
Casing pump bouble-stage pneumatic anti-blowout box for oil production Download PDFInfo
- Publication number
- CN2695617Y CN2695617Y CN 200420048059 CN200420048059U CN2695617Y CN 2695617 Y CN2695617 Y CN 2695617Y CN 200420048059 CN200420048059 CN 200420048059 CN 200420048059 U CN200420048059 U CN 200420048059U CN 2695617 Y CN2695617 Y CN 2695617Y
- Authority
- CN
- China
- Prior art keywords
- urceolus
- sealing
- plunger
- tube
- cylinder
- 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 - Fee Related
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Abstract
The utility model relates to an anti-blowout box mounted on the tip of the well head for oil production. By using two sealing packings with the tapers in opposite directions, pressure is applied to the sealing packings by the pressed air to guarantee the seal of the packings. The upper and lower corns in which the sealing packings are arranged are connected with the upper and the lower ends of the outer tube by threads, a ring shape cylinder is arranged on the both ends of the outer tube respectively, and a communicating pore is arranged between the two cylinders. A gas inlet is arranged on the wall of the outer tube, plungers are arranged in the cylinders, a spring press cap is arranged on the inner wall of the outer tube, and a return spring is arranged between the spring press cap and the plunger. During operation, two sealing packings with the tapers in opposite directions provide sealing at the same time to improve the sealing capability of the unti-blowout box. The anti-blowout box can not only guide the flow of crude oil and prevent safety accidents but also guarantee the seal by adopting bidirectional sealing. Besides, the utility model has the advantages of reasonable structure and simple installation and operation.
Description
Affiliated technical field
The utility model relates to a kind of petroleum technology field, the instrument that uses in the oil producing operation.It is a kind of blowout prevention box that extraction oil the time is installed in the well head cannula tip that overlaps.
Background technology
The oil well cover technology of taking out is to recover the oil the later stage in the oil field, when oil well output can not satisfy pumping production, and a kind of discontinuity oil pumping method that is adopted.Main way is: utilize wire rope to hang swab, swab is made a gift to someone in the sleeve pipe, arrive below the oil reservoir; Carry swab slowly, the crude oil in the sleeve pipe is promoted to ground.For the crude oil water conservancy diversion that will rise to ground to oil sump, in cannula tip the blowout prevention box is installed.General blowout prevention box is in the plug-in mounting safety joint of water conservancy diversion four-way junction of casing top.Safety joint is the flange shape.There is safety pin to be connected between safety joint and the four-way junction of casing upper flange.The effect of safety pin: when running into when lifting power on excessive, safety pin is at first broken, and protects other instrument not to be damaged.In addition, adopt between awl tube and the safety joint and be threaded.Awl tube centre bore is up big and down small.In the awl tube sealed packing is arranged, sealed packing is to make cone by elastomeric material.Its conical surface cooperates with the awl tube, and centre bore can pass wire rope.The four-way junction of casing and the safety pin structure design of existing blowout prevention box are more reasonable, have played the effect of water conservancy diversion crude oil and prevention security incident.But existing blowout prevention box hermetically-sealed construction is also not really desirable.Because awl tube is suitable for reading big, following young, sealed packing packs tightly wire rope, when wire rope is carried on not, seals solid and reliable.But cover is taken out operation and is begun, on when carrying wire rope, sealed packing is taken up by wire rope simultaneously, influences sealing effectiveness.
The utility model content
The purpose of this utility model is: unreasonable, simple in structure in order to overcome existing blowout prevention box awl tube hermetically-sealed construction, on influence sealing effectiveness when carrying wire rope.The utility model provides a kind of twin-stage pneumatic blowout prevention box, and this blowout prevention box can not only the water conservancy diversion cover draw up the crude oil that comes, the prevention security incident, and can when carrying wire rope, guarantee the packing_seal effect last.
The utility model solves the problem that existing blowout prevention box exists, and the technical scheme of being taked is: utilize two sealed packings that taper direction is opposite, and to adopt compressed air be that sealed packing is exerted pressure, guarantee packing_seal.Concrete structure is: the urceolus lower end is with the slower conical tube top that is threaded, and the urceolus upper end is with the upper conical-tube bottom that is threaded.Slower conical tube is threaded with safety joint.The lower seal packing is arranged in the slower conical tube, last sealed packing is arranged in the upper conical-tube.The hole that upper and lower sealed packing center has wire rope to pass through.Lower seal packing smaller diameter end is downward, and last sealed packing smaller diameter end upwards.The hole that the urceolus center has wire rope to pass through.The urceolus two ends have a circular cylinder respectively, between two cylinders intercommunicating pore are arranged.There is air inlet port to communicate with two cylinder bottom on the outer tube wall by intercommunicating pore.Plunger is arranged in the cylinder.The fixing spring pressure cap of screw thread is arranged on the outer tube inner wall.The spring pressure cap is the annulus post, and cylindrical has the screw thread that cooperates with urceolus.Have a back-moving spring between spring pressure cap and the plunger at least, back-moving spring can adopt spiral compression spring.
In order to improve the sealing performance between plunger and the cylinder, improve the thrust of plunger, between cylinder and plunger, sealing ring is arranged.
Begin the cover take out crude oil before, four-way junction of casing and well mouth of oil well are fixed.Upper and lower sealed packing of steel wire penetrating and urceolus centre bore, the bottom hangs a casing swab.Cover is taken out beginning, and at first the compressed air with 0.6-0.8MPa enters cylinder by air inlet port, promotes the cylinder plunger, compresses sealed packing, on carry wire rope.
The beneficial effects of the utility model are, two sealed packings that taper direction is opposite are set in urceolus, and two opposite sealed packings of taper direction seal simultaneously under the pressure of plunger, improve the sealing of blowout prevention box.This blowout prevention box is rational in infrastructure, can not only the water conservancy diversion cover draw up the crude oil that comes, and can prevent security incident, and when carrying wire rope, adopts the two way seal packing to guarantee sealing function really last, and has installation, advantage such as easy and simple to handle.
Description of drawings
Fig. 1 is overall structure figure of the present utility model, is an embodiment.Taking partly to cut open form represents.The thin indicated direction of arrow is the direction that compressed air enters.The route that the thick indicated direction of arrow is crossed by the crude stream of extraction.
In the accompanying drawings, 1. four-way junction of casing, 2. safety pin, 3. safety joint, 4. slower conical tube, 5. lower seal packing, 6. urceolus, 7. plunger inner seal ring, 8. plunger exterior seal ring, 9. air inlet port, 10. cylinder plunger, 11. back-moving springs, 12. spring pressure caps, sealed packing on 13., 14. upper conical-tubes.
The specific embodiment
In the accompanying drawings, in water conservancy diversion four-way junction of casing (1) top plug-in mounting safety joint (3).Person in charge's internal diameter of four-way junction of casing (1) is 140 millimeters, and length is 400 millimeters, and flange is arranged at top.Safety joint (3) is the flange shape, and ledge inserts to be responsible for, and two flanges are relative.There are 2 safety pins (2) to be connected between safety joint (3) and four-way junction of casing (1) upper flange.2 safety pins (2) can bear 1 ton pulling force altogether, and it is disconnected to surpass 1 ton hour safety pin, and the protection miscellaneous equipment is not suffered a loss.Urceolus (6) lower end is with the slower conical tube that is threaded (4), urceolus (6) the upper end upper conical-tube (14) that is threaded.Slower conical tube (4) is threaded with safety joint (3).The tapering of upper and lower awl tube (14) (4) and upper and lower sealed packing (13) (5) is 1 to 5.A sealed packing (5) is arranged in the slower conical tube (4); A sealed packing (13) is housed in the upper conical-tube (14).Sealed packing (5) (13) is to be formed by the elastomeric material pressure injection, 170 millimeters of length, and the bore dia that the core wire rope passes through is 15 millimeters.Lower seal packing (5) smaller diameter end is downward, and last sealed packing (13) smaller diameter end upwards.The hole that urceolus (6) center has wire rope to pass through, the diameter in hole is 25 millimeters.Urceolus (6) two ends have a circular cylinder respectively, between two circular cylinders intercommunicating pore are arranged.There is air inlet port (9) to communicate with two cylinder bottom on urceolus (6) wall by intercommunicating pore.Plunger (10) is arranged in the cylinder.Adopt screw fixation method on urceolus (6) inwall, the spring pressure cap is fixed between urceolus (6) and the plunger (10).Spring pressure cap (12) is the annulus post, and cylindrical has the screw thread that cooperates with urceolus (6), and thickness is 12 millimeters.Between spring pressure cap (12) and the plunger (10) a helical compression back-moving spring (11) is arranged respectively.Between cylinder and plunger (10), adopt rubber seal (7) (8).When carrying wire rope on the needs, operator is opened valve, and compressed air enters cylinder by air inlet port (9), promotes cylinder plunger (10) and compresses sealed packing (5) (13), and envelope packing (5) (13) is held wire rope tightly, plays sealing function.When transferring wire rope, close valve, back-moving spring (11) promotes cylinder plunger (10) and gets back to the home position, sealed packing (5) (13) is not stressed, envelope packing (5) (13) unclamps wire rope, reduce the friction of wire rope and sealed packing (5) (13), improve the application life of sealed packing (5) (13).
Claims (3)
1, a kind ofly overlap the cover that extraction oil the time is installed in well head sleeve pipe top and take out the pneumatic blowout prevention box of twin-stage, be by water conservancy diversion four-way junction of casing (1) top plug-in mounting safety joint (3), there is safety pin (2) to be connected between safety joint (3) and four-way junction of casing (1) upper flange, it is characterized in that: urceolus (6) lower end is with the slower conical tube that is threaded (4) top, urceolus (6) upper end is with the upper conical-tube that is threaded (14) bottom, slower conical tube (4) is threaded with safety joint (3), lower seal packing (5) is arranged in the slower conical tube (4), last sealed packing (13) is arranged in the upper conical-tube (14), on, the hole that lower seal packing (5) (13) center has wire rope to pass through, lower seal packing (5) smaller diameter end is downward, last sealed packing (13) smaller diameter end upwards, the hole that urceolus (6) center has wire rope to pass through, urceolus (6) two ends have a circular cylinder respectively, between two cylinders intercommunicating pore is arranged, there is air inlet port (9) to communicate with two cylinder bottom on urceolus (6) wall by intercommunicating pore, plunger (10) is arranged in the cylinder, on urceolus (6) inwall screw thread fixing spring pressure cap (12) is arranged, spring pressure cap (12) is the annulus cylindricality, spring pressure cap (12) cylindrical has the screw thread that cooperates with urceolus (6), has a back-moving spring (11) at least between spring pressure cap (12) and the plunger (10).
2, the pneumatic blowout prevention box of twin-stage as claimed in claim 1 is characterized in that: sealing ring (7) (8) is arranged between cylinder and the plunger (10).
3, the pneumatic blowout prevention box of twin-stage as claimed in claim 1, it is characterized in that: back-moving spring (11) can adopt spiral compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420048059 CN2695617Y (en) | 2004-04-09 | 2004-04-09 | Casing pump bouble-stage pneumatic anti-blowout box for oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420048059 CN2695617Y (en) | 2004-04-09 | 2004-04-09 | Casing pump bouble-stage pneumatic anti-blowout box for oil production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2695617Y true CN2695617Y (en) | 2005-04-27 |
Family
ID=34776242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420048059 Expired - Fee Related CN2695617Y (en) | 2004-04-09 | 2004-04-09 | Casing pump bouble-stage pneumatic anti-blowout box for oil production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2695617Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996092A (en) * | 2012-11-07 | 2013-03-27 | 宝鸡瑞林石油机电设备有限责任公司 | Hydraulic-control double-stage well test blowout preventer |
| CN106761571A (en) * | 2016-11-26 | 2017-05-31 | 东北石油大学 | Locked coil wire rope numerical control elevator oil pumper |
-
2004
- 2004-04-09 CN CN 200420048059 patent/CN2695617Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996092A (en) * | 2012-11-07 | 2013-03-27 | 宝鸡瑞林石油机电设备有限责任公司 | Hydraulic-control double-stage well test blowout preventer |
| CN102996092B (en) * | 2012-11-07 | 2015-02-11 | 宝鸡瑞林石油机电设备有限责任公司 | Hydraulic-control double-stage well test blowout preventer |
| CN106761571A (en) * | 2016-11-26 | 2017-05-31 | 东北石油大学 | Locked coil wire rope numerical control elevator oil pumper |
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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 |