CN103089190A - Hydraulic well sealing device - Google Patents
Hydraulic well sealing device Download PDFInfo
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- CN103089190A CN103089190A CN2013100364944A CN201310036494A CN103089190A CN 103089190 A CN103089190 A CN 103089190A CN 2013100364944 A CN2013100364944 A CN 2013100364944A CN 201310036494 A CN201310036494 A CN 201310036494A CN 103089190 A CN103089190 A CN 103089190A
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- lower body
- sealing device
- hydraulic pressure
- joint
- well
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Abstract
The invention relates to a wellhead hydraulic automatic sealing device, in particular to a hydraulic well sealing device. The hydraulic well sealing device comprises an upper body and a lower body. The upper body and the lower body are connected to form an H shape. A rubber cylinder body is further connected with the upper body and the lower body. A rubber cylinder frame is arranged between the rubber cylinder body and the lower body. The rubber cylinder frame is combined with the lower body through an O-shaped sealing ring to form a closed annular space. One side of the lower body is provided with a joint. The hydraulic well sealing device is high in sealing pressure and a safety factor, simple in structure, convenient to install, favorable for pressure discharging, capable of reducing environment pollution, improving production efficiency and reducing operation cost, long in service life and reusable.
Description
Technical field
The present invention relates to well mouth hydraulic self-sealing equipment, particularly a kind of hydraulic pressure sealing device for well.
Background technology
In oilfield explorating developing process, always have that the part oil-water well is low because of energy, moisture height, down-hole accident, geology or engineering factor occur, do not possess value etc. and closing well or permanent closing well temporarily, this class well was adopted ash plug or non-hydraulic way shut-in well in the past, both uneconomical also dangerous.Sometimes under certain technical condition, after adopting perfect, adjustment, overhaul, brill plug through annotating, getting measures such as buing or get by illegal means cover, again develop again.Bore again or scrape the dedust plug this moment, not only loses time but also uneconomical.In order to protect this class well not only not to be destroyed but also do not cause environment pollution to reuse in the closing well process, a kind of new blowout preventer requires study.
Summary of the invention
The objective of the invention is that existing blowout preventer range of application is little in order to overcome, defective poor sealing performance provides a kind of hydraulic pressure sealing device for well simple in structure, this hydraulic pressure sealing device for well can be realized the dynamic seal (packing) of well head in lower oil tube or sucker rod process, more effectively environmental contamination reduction guarantees completing smoothly of operation, avoids the increase of expense.
Technical scheme provided by the invention is:
Hydraulic pressure sealing device for well, comprise upper body and lower body, upper body and lower body are connected to form " work " font, the packing element body is placed in upper body and lower body Special composition, be provided with rubber skeleton between packing element body and lower body, rubber skeleton is combined into an airtight annular space by O RunddichtringO and lower body, and lower body one side is provided with joint.
Concrete, described joint correspondence is provided with the joint pressure cap.
Concrete, also be provided with plug on described lower body.
Concrete, described joint is connected with oil cylinder.
Concrete, be connected with equalizer between described joint and oil cylinder.
Concrete, described packing element and lower body junction are provided with backing plate.
When injection pressure in the oil cylinder of hydraulic pressure sealing device for well of the present invention, packing element body internal diameter is realized the dynamic seal (packing) to lower oil tube or sucker rod along with changing by the oil pipe of its centre bore or the external diameter of sucker rod; When in well during without oil pipe or sucker rod, inject suitable pressure, can realize the hermetically sealed or blind sealing to well head, in case fall into junk or stop overflow; The packing element body returns to the home position state when injection pressure reduces or discharge.Sealing load of the present invention is large, and safety factor is high; Simple in structure, release is installed conveniently; Can environmental contamination reduction; Enhance productivity; Reduce operating cost; Long service life can reuse.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is oil cylinder of the present invention and balancer structure schematic diagram.
1 upper body 2 lower body 3 packing element body 4 rubber skeleton 5O RunddichtringO 6 plug 7 joint pressure cap 8 joint 9 backing plate 10 equalizer 11 oil cylinders.
The specific embodiment
As shown in Figure 1, hydraulic pressure sealing device for well comprises upper body and lower body.Upper body and lower body are connected to form " work " font, and the packing element body is placed in upper body and lower body Special composition.Be provided with rubber skeleton between packing element body and lower body, rubber skeleton is combined into an airtight annular space by O RunddichtringO and lower body.Lower body one side is provided with joint.Described joint correspondence is provided with the joint pressure cap.Also be provided with plug on described lower body.Packing element body and lower body junction are provided with backing plate.
The rubber skeleton of the packing element body upper/lower terminal of hydraulic pressure sealing device for well of the present invention makes up the airtight annular space that becomes by O RunddichtringO and lower body, the hydraulic oil that will have certain pressure intensity by oil cylinder is injected in this annular space by the pipeline that joint and joint pressure cap connect, and lower body has plug that this annular space is shut in addition.Make packing element body endoporus constantly dwindle until oil pipe or the sucker rod of centre is tamping along with the increase of pressure, be engraved in variation during the pressure that when tripping out due to oil pipe and sucker rod, packing element body inwall produced, impact damages to the packing element body to reduce oil pipe or sucker rod externally to increase an equalizer based on this, communicate with hydraulic line other end inside of this equalizer one end is filled with nitrogen, the centre has piston to be separated by, and when oil pipe or rod whip packing element body, the extruding annular space makes the hydraulic line internal pressure increase the pushing piston Compressed Gas and then play cushioning effect.When injecting certain pressure in well during without oil pipe or sucker rod, packing element body internal diameter may contract to zero, and well head is realized hermetically sealed or blind sealing, in case fall into junk or stop overflow; Set back under the effect of packing element body elastic force when injection pressure reduces or discharge.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (6)
1. hydraulic pressure sealing device for well, comprise upper body and lower body, upper body and lower body are connected to form " work " font, it is characterized in that, the packing element body is placed in upper body and lower body Special composition, be provided with rubber skeleton between packing element body and lower body, rubber skeleton is combined into an airtight annular space by O RunddichtringO and lower body, and lower body one side is provided with joint.
2. hydraulic pressure sealing device for well according to claim 1, is characterized in that, described joint correspondence is provided with the joint pressure cap.
3. hydraulic pressure sealing device for well according to claim 1, is characterized in that, also is provided with plug on described lower body.
4. hydraulic pressure sealing device for well according to claim 1, is characterized in that, described joint is connected with oil cylinder.
5. hydraulic pressure sealing device for well according to claim 4, is characterized in that, is connected with equalizer between described joint and oil cylinder.
6. hydraulic pressure sealing device for well according to claim 1, is characterized in that, described packing element and lower body junction are provided with backing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100364944A CN103089190A (en) | 2013-01-31 | 2013-01-31 | Hydraulic well sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100364944A CN103089190A (en) | 2013-01-31 | 2013-01-31 | Hydraulic well sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103089190A true CN103089190A (en) | 2013-05-08 |
Family
ID=48202268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100364944A Pending CN103089190A (en) | 2013-01-31 | 2013-01-31 | Hydraulic well sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103089190A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530486A (en) * | 2021-08-10 | 2021-10-22 | 江苏益马机械有限公司 | Oil recovery well head seal structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3614111A (en) * | 1969-10-23 | 1971-10-19 | John Regan | Tool joint stripping stationary blowout preventer with a retrievable packing insert |
| WO1998007956A1 (en) * | 1996-08-23 | 1998-02-26 | Caraway Miles F | Rotating blowout preventor |
| CN2554340Y (en) * | 2002-06-14 | 2003-06-04 | 辽河石油勘探局兴隆台工程技术处 | Adjustable pressure ring shaped capping apparatus |
| CN2634105Y (en) * | 2003-05-30 | 2004-08-18 | 宝鸡石油机械有限责任公司 | Oil pipe anti-spray box |
| CN202187738U (en) * | 2010-12-09 | 2012-04-11 | 盐城市鑫源石化机械有限公司 | Self-sealing preventer with hydraulic compensation |
-
2013
- 2013-01-31 CN CN2013100364944A patent/CN103089190A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3614111A (en) * | 1969-10-23 | 1971-10-19 | John Regan | Tool joint stripping stationary blowout preventer with a retrievable packing insert |
| WO1998007956A1 (en) * | 1996-08-23 | 1998-02-26 | Caraway Miles F | Rotating blowout preventor |
| CN2554340Y (en) * | 2002-06-14 | 2003-06-04 | 辽河石油勘探局兴隆台工程技术处 | Adjustable pressure ring shaped capping apparatus |
| CN2634105Y (en) * | 2003-05-30 | 2004-08-18 | 宝鸡石油机械有限责任公司 | Oil pipe anti-spray box |
| CN202187738U (en) * | 2010-12-09 | 2012-04-11 | 盐城市鑫源石化机械有限公司 | Self-sealing preventer with hydraulic compensation |
Non-Patent Citations (1)
| Title |
|---|
| 许贤良等: "《液压传动》", 30 September 2006, 国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530486A (en) * | 2021-08-10 | 2021-10-22 | 江苏益马机械有限公司 | Oil recovery well head seal structure |
| CN113530486B (en) * | 2021-08-10 | 2022-11-01 | 江苏益马机械有限公司 | Oil recovery well head seal structure |
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Application publication date: 20130508 |