CN202850931U - Blowout prevention device of oil well mouth - Google Patents
Blowout prevention device of oil well mouth Download PDFInfo
- Publication number
- CN202850931U CN202850931U CN 201220566416 CN201220566416U CN202850931U CN 202850931 U CN202850931 U CN 202850931U CN 201220566416 CN201220566416 CN 201220566416 CN 201220566416 U CN201220566416 U CN 201220566416U CN 202850931 U CN202850931 U CN 202850931U
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- Prior art keywords
- oil well
- well mouth
- flashboard
- adaptive
- stripper rubber
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Abstract
The utility model discloses a blowout prevention device of an oil well mouth. The blowout prevention device of the oil well mouth comprises a circulation channel which enables adaptive polish rods to be installed in a plugging mode. Two sealing heads which are used for holding tightly and releasing the polish rods are arranged in the circulation channel in opposite direction. Stripper rubbers which are set relatively are arranged on relative sides of the two sealing heads. The stripper rubbers have flexible sealing surfaces which are used for being matched with the adaptive polish rods in a seal way. The two sealing heads also comprise flashboards which are set relatively. The flashboards have rigid sealing surfaces which are hierarchically set with the flexible sealing surface of the stripper rubbers along the circulation channel extending direction, and used for compressing and matching with the adaptive polish rods. An actuating arm is connected with the flashboards in a transmission mode. The stripper rubbers are made from high saturated hydrogenated nitrile packing. The blowout prevention device of the oil well mouth is also provided with an annular blowout preventing ring, and therefore great pressure bear ability and blowout preventing function can be achieved.
Description
Technical field
The utility model relates to a kind of pumpingh well surface well jaws equipment, specifically a kind of well mouth of oil well blowout hookup.
Background technology
Oil extraction in oil field is produced the initial stage, and swiftly flowing formation fluid can cause well head pressure to rise, and might cause blowout if surpassed the pressure-bearing scope of Well head flow path.The technological process of currently used part well head, such as rubber gate and threeway etc., voltage withstand class only has 4MPa, and the high-pressure oil gas when being difficult to control blowout also may cause polished rod, sucker rod to spray from pit shaft when oil well pressure is too high, have potential safety hazard.
Application number is that 02251433.3 Chinese patent discloses a kind of rubber gate for oil pumping, comprise handwheel, leading screw, as stripper rubber of hermetically-sealed construction etc., this rubber valve adopts symmetrical sealing mechanism, the matching surface semicircular in shape of its stripper rubber and pumping well polish rod, handwheel by the rotation-symmetric setting makes leading screw drive stripper rubber and moves from two side direction centers and hold polished rod tightly, realize polished rod seal and bearing certain pressure, but stripper rubber is full flexible sealing, the yielding inefficacy of high pressure lower seal rubber, therefore bearing capacity is little, this rubber gate does not have the polished rod safety device in addition, can't prevent during unexpected situation that polished rod from flying out.
The utility model content
The purpose of this utility model is to provide a kind of pressure tolerance large well mouth of oil well blowout hookup for above problem.
In order to realize above purpose, the technical scheme that the utility model adopts is: a kind of well mouth of oil well blowout hookup, comprise the circulation passage for adaptive polished rod plug-in mounting, be provided with in opposite directions in the circulation passage be used to two seal heads holding or discharge polished rod tightly, the opposite end of two seal heads has the stripper rubber that is oppositely arranged, stripper rubber has the flexible sealing face that cooperates for adaptive polished rod seal, described two seal heads also comprise the flashboard that is oppositely arranged, and described flashboard has with the flexible sealing face of stripper rubber and arranges along fluid passage bearing of trend layering, be used for the rigid seal face with adaptive polished rod compression fit.
Adopt flashboard structure, can play a supporting role to stripper rubber, thereby avoid flexible stripper rubber under high pressure to be out of shape, and rely on flashboard that polished rod is held tightly more reliably, improve the pressure tolerance of gate, reduce potential safety hazard.In addition, drive rod is connected with flashboard and can avoids Joint failure with stripper rubber, make be in transmission connection more reliable.
As preferably, the end that described flashboard is relative is provided with step, and described step comprises horizontal stand terrace and vertical step surface, and described stripper rubber is fixed on the step surface of described flashboard by screw, this connected mode is connected firmly, saves encapsulant, and is convenient to disassembling, assembling and replacing.
Described stripper rubber is to be made by the saturated hydrogenated butyronitrile filler of height, and this material can further increase the stripper rubber bearing capacity, and can reduce the knife switch operational torque in when operation.
Described flashboard external surface is provided with annular slotted, and corresponding described annular slotted is provided with sealing ring, occurs thereby prevent from better revealing.
Described well mouth of oil well blowout hookup comprises the circulation passage that arranges along the borehole fluid emission direction, also comprise the Highpressure Tee that is connected with circulation passage, the end that described Highpressure Tee links to each other with circulation passage is provided with circular anti-spray ring, and polished rod sprays from pit shaft when avoiding oil well pressure too high on this anti-spray ring thereby the polished rod box cupling that cooperates with it during assembling can be stuck in.
Description of drawings
Below in conjunction with the specific embodiment accompanying drawing the utility model is further described.
Fig. 1: the structural representation of a kind of embodiment of the utility model.
Each Reference numeral name is called among the figure: 1 valve body, 2 stripper rubbers, 3 valve rod pressure caps, 4 flashboards, 5 handwheels, 6 valve stem nuts, 7 anti-spray rings, 8 Highpressure Tees, 9 sealing rings.
The specific embodiment
An embodiment of a kind of well mouth of oil well blowout hookup of the utility model as shown in Figure 1, comprise rubber gate and Highpressure Tee, stripper rubber 2, flashboard 4 that rubber gate comprises valve body 1, is oppositely arranged, described flashboard 4 relative ends are provided with step, described step comprises horizontal stand terrace and vertical step surface, described stripper rubber 2 is made by the saturated hydrogenated butyronitrile filler of height, be fixed on by screw on the step surface of described flashboard 4, described flashboard 4 external surfaces are provided with annular slotted, and corresponding described annular slotted is provided with sealing ring 9.In addition, described flashboard 4 is rotatably connected by valve stem nut 6 and is provided with the valve rod of the left-handed trapezoidal thread of ascending/decending, described valve rod is located on the valve rod pressure cap 3 of threaded engagement with it, described valve rod pressure cap 3 is connected on the valve body 1 by screw thread, and the end that valve rod stretches out valve rod pressure cap 3 is that tetragonal links to each other with handwheel 5.Described well mouth of oil well blowout hookup comprises the circulation passage that arranges along the borehole fluid emission direction, also comprise the Highpressure Tee 8 that is connected with circulation passage, the end that described Highpressure Tee 8 links to each other with circulation passage is provided with circular anti-spray ring 7, and its internal diameter is less than the polished rod box cupling external diameter that is used.
During normal production, stripper rubber 2 is positioned at both sides, and well head is in open mode.If blowout, well kick accident occur, can be rotated in the forward fast two ends handwheel 5 simultaneously, make envelope stripper rubber 2 hold polished rod tightly, can close rubber gate, liquid or gas in the well that sealing is gushed out.Should keep two flashboard overhangs to equate when closing as far as possible, avoid excessive the stretching out of a stripper rubber and cause seal failure.While is owing to the effect of anti-spray ring 7, thereby the polished rod box cupling can't prevent that polished rod from spraying by its less internal diameter from pit shaft, avoid meeting accident.
In other embodiment of the present utility model, stripper rubber 2 also can adopt stripper rubber and flashboard to extend the form that is set to whole layer with the hierarchy of flashboard 4, and open counter sink and use screw to connect, perhaps adopt multilayer, for example will open a plurality of grooves at flashboard 4, stripper rubber 2 is embedded in the fluting, and use stay bolt that each layer stripper rubber fixed; Described anti-spray ring 7 also can be arranged on the junction of rubber gate and Highpressure Tee 8, perhaps is set directly in the circulation passage of rubber gate, also can realize same blowout prevention purpose.
Claims (5)
1. well mouth of oil well blowout hookup, comprise the circulation passage for adaptive polished rod plug-in mounting, be provided with in opposite directions in the circulation passage be used to two seal heads holding or discharge polished rod tightly, the opposite end of two seal heads has the stripper rubber that is oppositely arranged, stripper rubber has the flexible sealing face that cooperates for adaptive polished rod seal, it is characterized in that: described two seal heads also comprise the flashboard that is oppositely arranged, described flashboard have arrange along fluid passage bearing of trend layering with the flexible sealing face of stripper rubber, be used for the rigid seal face with adaptive polished rod compression fit.
2. a kind of well mouth of oil well blowout hookup according to claim 1, it is characterized in that: the end that described flashboard is relative is provided with step, described step comprises horizontal stand terrace and vertical step surface, and described stripper rubber is fixed on the step surface of described flashboard by screw.
3. a kind of well mouth of oil well blowout hookup according to claim 1, it is characterized in that: described stripper rubber is to be made by the saturated hydrogenated butyronitrile filler of height.
4. a kind of well mouth of oil well blowout hookup according to claim 1, it is characterized in that: described flashboard external surface is provided with annular slotted, and corresponding described annular slotted is provided with sealing ring.
5. the described a kind of well mouth of oil well blowout hookup of any one according to claim 1 ~ 4, it is characterized in that: communicating with described circulation passage is provided with Highpressure Tee, and the end that described Highpressure Tee links to each other with circulation passage is provided with circular anti-spray ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220566416 CN202850931U (en) | 2012-10-31 | 2012-10-31 | Blowout prevention device of oil well mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220566416 CN202850931U (en) | 2012-10-31 | 2012-10-31 | Blowout prevention device of oil well mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202850931U true CN202850931U (en) | 2013-04-03 |
Family
ID=47982141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220566416 Expired - Fee Related CN202850931U (en) | 2012-10-31 | 2012-10-31 | Blowout prevention device of oil well mouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202850931U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604518A (en) * | 2015-12-22 | 2016-05-25 | 付吉平 | Portable wellhead drop-prevention device and wellhead cable blowout-prevention gate integrated device |
| CN109488246A (en) * | 2017-09-12 | 2019-03-19 | 中国石油天然气股份有限公司 | Pumping unit blowout preventer and pumping unit |
| CN111577597A (en) * | 2020-05-20 | 2020-08-25 | 大庆油田有限责任公司 | Screw pump direct-drive device |
-
2012
- 2012-10-31 CN CN 201220566416 patent/CN202850931U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604518A (en) * | 2015-12-22 | 2016-05-25 | 付吉平 | Portable wellhead drop-prevention device and wellhead cable blowout-prevention gate integrated device |
| CN109488246A (en) * | 2017-09-12 | 2019-03-19 | 中国石油天然气股份有限公司 | Pumping unit blowout preventer and pumping unit |
| CN109488246B (en) * | 2017-09-12 | 2023-09-26 | 中国石油天然气股份有限公司 | Blowout preventer of pumping unit and pumping unit |
| CN111577597A (en) * | 2020-05-20 | 2020-08-25 | 大庆油田有限责任公司 | Screw pump direct-drive device |
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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: 20130403 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |