CN103806859A - Double-wedge-disc blowout prevention device with high practicability - Google Patents
Double-wedge-disc blowout prevention device with high practicability Download PDFInfo
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- CN103806859A CN103806859A CN201410069793.2A CN201410069793A CN103806859A CN 103806859 A CN103806859 A CN 103806859A CN 201410069793 A CN201410069793 A CN 201410069793A CN 103806859 A CN103806859 A CN 103806859A
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- flashboard
- blind rams
- unit assembly
- packing unit
- sealing
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Abstract
The invention discloses a double-wedge-disc blowout prevention device with high practicability. The double-wedge-disc blowout prevention device with high practicability comprises a body, a side door, an upper flange, a lower flange, a semi-sealing wedge disc sealing rubber core assembly, a full-sealing wedge disc sealing rubber core assembly and a wedge disc shaft sealing element, wherein the upper flange is connected with the upper surface of the body, the lower flange is connected with the lower surface of the body, the body is provided with two sealing wedge discs, the semi-sealing wedge disc sealing rubber core assembly serves as the sealing wedge disc on the upper layer, the full-sealing wedge disc sealing rubber core assembly serves as the sealing wedge disc on the lower layer, the wedge disc shaft sealing element is arranged between the semi-sealing wedge disc sealing rubber core assembly and the full-sealing wedge disc sealing rubber core assembly, and the side door is installed on the side face of the body. According to the structure, the body is divided into the two layers, one wedge disc can be closed on the situation that an oil pipe exists in a well, the other wedge disc can be closed on the situation that no oil pipes exist in the well, different situations can be handled differently, the blowout prevention effect is better, and the application range is broadened.
Description
Technical field
The present invention relates to petroleum machinery field, be specifically related to practical double ram blowout preventer.
Background technology
In oil drilling, well workover process, well kick and gas blowout accident happen occasionally, and must seal well head with preventer, to guarantee the safety of operating personnel and equipment.Along with the development of petroleum drilling technology, deep-well, ultradeep well get more and more, the oil well ratio of combined string significantly rises, and top adopts larger-diameter oil pipe, and bottom adopts the oil pipe of minor diameter, as adopt single ram type perventer, in the time of lower tubular column, need on-the-spot replacing flashboard to be suitable for the sealing needs of different tube diameters, and the on-the-spot flashboard difficulty of changing, once there is blowout, and could not change in time flashboard, easily cause potential safety hazard.In the time of workover treatment, in well, without oil pipe, down-hole pressure changes, and while occurring blowout trend, we just should take the precautionary measures in advance, avoid the generation of larger secret.When existing oil pipe in well, existing blowout hookup can utilize down-hole pressure to change, in the time there is blowout sign, flashboard is carried out to shutoff operation, but for the situation that in some wells, down-hole pressure changes without oil pipe, can not carry out shutoff operation to its flashboard, to avoid the appearance of blowout, cause larger economic loss.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, practical double ram blowout preventer is provided, body is divided into two-layer, can close flashboard to existing in well in the situation of oil pipe, again can be to closing flashboard in the situation without oil pipe in well, different situations are carried out to different disposal, and blowout prevention better effects if, has expanded the scope of application.
For solving above-mentioned technical problem, the present invention is by the following technical solutions: practical double ram blowout preventer, comprise body, side door, the upper flange being connected with body upper surface, the lower flange being connected with body soffit, partly seal flashboard packing unit assembly, blind rams packing unit assembly and flashboard axis seal, described body is equipped with two-layer sealing damper, upper strata is half envelope flashboard packing unit assembly, lower floor is blind rams packing unit assembly, flashboard axis seal is arranged between half envelope flashboard packing unit assembly and blind rams packing unit assembly, side door is arranged on the side of body.In workover treatment, when when there is oil pipe in well, borehole pressure changes, the flashboard packing unit assembly that partly seals on upper strata is operated, realize and seal the object that reaches blowout prevention.When the blind rams packing unit assembly of lower floor being carried out seal operation and reached the object of blowout prevention in well during without oil pipe.Different pressures is processed respectively, both guaranteed the effect of blowout prevention, also guarantee the durability of equipment, the scope of application is more extensive.
The described flashboard packing unit assembly that partly seals comprises half envelope gate rubber core, partly seals flashboard, bearing and side door seal, partly seal gate rubber core and be positioned at half envelope flashboard, partly seal the end of flashboard and the end of bearing is connected, side door seal, between bearing and the inwall of body, partly seals gate rubber core and bearing is located along the same line.Side door seal can guarantee the sealing of bearing in motion process.
Described blind rams packing unit assembly comprises blind rams glue core, leading screw, blind rams and side door gland, blind rams glue core is wherein positioned at blind rams, blind rams one end is connected with the end of leading screw, in the bottom of leading screw, side door gland is set, blind rams glue core and leading screw are located along the same line.Later stage maintenance is convenient in the design of side door gland, and observes its sealing situation.
Between described blind rams and lower flange, be also provided with ring gasket groove.When in well, without oil pipe, down-hole pressure changes, convenient operation blind rams, compresses blind rams glue core relatively, realizes the object that the sealing of empty well is reached to blowout prevention.
Described partly seal flashboard packing unit assembly and blind rams packing unit assembly equal in length and be all parallel to horizontal plane.
Compared with prior art, the invention has the beneficial effects as follows:
1, can be to there is oil pipe and adopting respectively half envelope flashboard packing unit assembly and blind rams packing unit assembly to carry out shutoff operation to flashboard without two kinds of situations of oil pipe in the present invention in well, realize best blowout prevention effect, expanded the scope of application.
2, in the present invention, side door seal can guarantee the sealing of bearing in motion process.
3, in the present invention, the design of side door gland is convenient to later stage maintenance and observes its sealing situation.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention.
In figure, Reference numeral is expressed as: 1, body; 2, upper flange; 3, lower flange; 4, side door; 5, partly seal gate rubber core; 6, partly seal flashboard; 7, flashboard axis seal; 8, bearing; 9, ring gasket groove; 10, blind rams glue core; 11, leading screw; 12, blind rams; 13, side door gland; 14, side door seal.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated, and embodiments of the invention are not limited to this.
Embodiment:
As shown in Figure 1, the present invention includes body 1, side door 4, the upper flange 2 being connected with body 1 upper surface, the lower flange 3 being connected with body 1 soffit, partly seal flashboard packing unit assembly, blind rams packing unit assembly and flashboard axis seal 7, between blind rams 12 and lower flange 3, be also provided with ring gasket groove 9, partly seal flashboard packing unit assembly and blind rams packing unit assembly equal in length and be all parallel to horizontal plane.The body 1 of the present embodiment is equipped with two-layer sealing damper, upper strata is half envelope flashboard packing unit assembly, lower floor is blind rams packing unit assembly, and flashboard axis seal 7 is arranged between half envelope flashboard packing unit assembly and blind rams packing unit assembly, and side door 4 is arranged on the side of body 1.The flashboard packing unit assembly that partly seals of the present embodiment comprises half envelope gate rubber core 5, partly seals flashboard 6, bearing 8 and side door seal 14, partly seal gate rubber core 5 and be positioned at half envelope flashboard 6, the end of partly sealing flashboard 6 is connected with the end of bearing 8, side door seal 14, between bearing 8 and the inwall of body 1, partly seals gate rubber core 5 and is located along the same line with bearing 8.The blind rams packing unit assembly of the present embodiment comprises blind rams glue core 10, leading screw 11, blind rams 12 and side door gland 13, blind rams glue core 10 is wherein positioned at blind rams 12, blind rams 12 one end are connected with the end of leading screw 11, in the bottom of leading screw 11, side door gland 13 is set, blind rams glue core 10 is located along the same line with leading screw 11.
In workover treatment, in well, there is oil pipe and down-hole pressure changes, while there is blowout sign, the flashboard packing unit assembly that partly seals to body upper strata operates, close half envelope flashboard, drive the flashboard seal assembly that is positioned at bearing both sides to central motion, make half envelope flashboard packing unit hold oil pipe tightly, thereby the annular space to OIH pipe and sleeve pipe seals, and realizes blowout prevention.
In workover treatment, in well, without oil pipe, down-hole pressure changes, while there is blowout sign, blind rams packing unit assembly to body lower floor operates, close blind rams, utilize the motion of leading screw that blind rams glue core is compressed relatively, realize the seal operation to empty well.Realized in well without oil pipe and have two kinds of situations of oil pipe to operate respectively, compress better effects if, expanded the scope of application of this device.Side door seal can guarantee the sealing of bearing in motion process.The design of side door gland is convenient to later stage maintenance and is observed its sealing situation.
Just can realize as mentioned above this invention.
Claims (5)
1. practical double ram blowout preventer, it is characterized in that: comprise body (1), side door (4), the upper flange (2) being connected with body (1) upper surface, the lower flange (3) being connected with body (1) soffit, partly seal flashboard packing unit assembly, blind rams packing unit assembly and flashboard axis seal (7), described body (1) is equipped with two-layer sealing damper, upper strata is half envelope flashboard packing unit assembly, lower floor is blind rams packing unit assembly, flashboard axis seal (7) is arranged between half envelope flashboard packing unit assembly and blind rams packing unit assembly, side door (4) is arranged on the side of body (1).
2. practical double ram blowout preventer according to claim 1, it is characterized in that: the described flashboard packing unit assembly that partly seals comprises half envelope gate rubber core (5), partly seals flashboard (6), bearing (8) and side door seal (14), partly seal gate rubber core (5) and be positioned at half envelope flashboard (6), the end of partly sealing flashboard (6) is connected with the end of bearing (8), side door seal (14) is positioned between bearing (8) and the inwall of body (1), partly seals gate rubber core (5) and is located along the same line with bearing (8).
3. practical double ram blowout preventer according to claim 1, it is characterized in that: described blind rams packing unit assembly comprises blind rams glue core (10), leading screw (11), blind rams (12) and side door gland (13), blind rams glue core (10) is wherein positioned at blind rams (12), blind rams (12) one end is connected with the end of leading screw (11), in the bottom of leading screw (11), side door gland (13) is set, blind rams glue core (10) is located along the same line with leading screw (11).
4. practical double ram blowout preventer according to claim 3, is characterized in that: between described blind rams (12) and lower flange (3), be also provided with ring gasket groove (9).
5. practical double ram blowout preventer according to claim 1, is characterized in that: described partly seal flashboard packing unit assembly and blind rams packing unit assembly equal in length and be all parallel to horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069793.2A CN103806859A (en) | 2014-02-28 | 2014-02-28 | Double-wedge-disc blowout prevention device with high practicability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069793.2A CN103806859A (en) | 2014-02-28 | 2014-02-28 | Double-wedge-disc blowout prevention device with high practicability |
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| Publication Number | Publication Date |
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| CN103806859A true CN103806859A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410069793.2A Pending CN103806859A (en) | 2014-02-28 | 2014-02-28 | Double-wedge-disc blowout prevention device with high practicability |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625822A (en) * | 2018-05-08 | 2018-10-09 | 海峰深水（天津）技术服务有限公司 | Multistage sequentially triggered emergency system capable of automatically shearing tubular column and sealing well |
| CN110374541A (en) * | 2019-07-23 | 2019-10-25 | 建湖县帅牛机械有限公司 | A kind of preventer of dual-seal design |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201103371Y (en) * | 2007-12-14 | 2008-08-20 | 大庆油田有限责任公司 | Manual double-gate sucker rod blow-out preventer |
| CN201318148Y (en) * | 2008-12-17 | 2009-09-30 | 中国石化股份胜利油田分公司河口采油厂 | Manual double ram blowout preventer |
| CN203742521U (en) * | 2014-02-28 | 2014-07-30 | 成都大漠石油机械有限公司 | Improved double-ram type preventer |
-
2014
- 2014-02-28 CN CN201410069793.2A patent/CN103806859A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201103371Y (en) * | 2007-12-14 | 2008-08-20 | 大庆油田有限责任公司 | Manual double-gate sucker rod blow-out preventer |
| CN201318148Y (en) * | 2008-12-17 | 2009-09-30 | 中国石化股份胜利油田分公司河口采油厂 | Manual double ram blowout preventer |
| CN203742521U (en) * | 2014-02-28 | 2014-07-30 | 成都大漠石油机械有限公司 | Improved double-ram type preventer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625822A (en) * | 2018-05-08 | 2018-10-09 | 海峰深水（天津）技术服务有限公司 | Multistage sequentially triggered emergency system capable of automatically shearing tubular column and sealing well |
| CN108625822B (en) * | 2018-05-08 | 2024-04-02 | 海一峰深水（天津）技术服务有限公司 | Multistage sequential triggering emergency system capable of automatically shearing tubular column and sealing well hole |
| CN110374541A (en) * | 2019-07-23 | 2019-10-25 | 建湖县帅牛机械有限公司 | A kind of preventer of dual-seal design |
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Application publication date: 20140521 |