CN2816341Y - Pressure-relief type well-plugging device - Google Patents
Pressure-relief type well-plugging device Download PDFInfo
- Publication number
- CN2816341Y CN2816341Y CN 200520091853 CN200520091853U CN2816341Y CN 2816341 Y CN2816341 Y CN 2816341Y CN 200520091853 CN200520091853 CN 200520091853 CN 200520091853 U CN200520091853 U CN 200520091853U CN 2816341 Y CN2816341 Y CN 2816341Y
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- CN
- China
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- well
- main body
- plugging device
- obturator
- wells
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Abstract
The utility model relates to a pressure-relief type well-plugging device for bailing wells and closed-in wells of oil fields, which is composed of a well-plugging device main body 1, an obturator 2, a sealing ring 3, a tension spring 4, a spring seat 5, a clamping hoop 6 and an opening control valve 7, wherein the obturator 2 is arranged in a cavity chamber at the upper part of the well-plugging device main body 1, and the sealing ring 3 is arranged in a sealing groove of the obturator 2; the tension spring 4 is arranged below the obturator 2, the spring seat 5 is arranged below the tension spring, and the outer screw threads of the spring seat 5 are connected and fixed to the inner screw threads at the lower part of a center cavity of the well-plugging device main body 1; the opening control valve 7 is arranged above the well-plugging device main body 1 by the clamping hoop 6. The well-plugging device has the advantages of simple structure, easy manufacture, convenient installation, convenient use and good work performance. When the utility model is used, a well head can be effectively plugged, the pressure variation in a well can be observed at any time, liquid and the pressure can be orderly discharged, the normal production management of the bailing wells and the closed-in wells can be ensured, and environment pollution and potential safety hazards can be avoided, which is favorable for improving the production management level and the economic benefits of the oil fields.
Description
Technical field:
The utility model relates to a kind of wellhead assembly that is used for the production of oil field bailing well, dead well management.
Background technology:
Along with oil field development, the prolongation of oil mining time, some low-voltage and low-yield oil wells are had to adopt and are dragged for the wet goods mode and produce, even close a well in, thereby bailing well, dead well increase day by day, and the management of dragging for oil, dead well is more and more important.At present, on-the-spot adopt blank flange shutoff well head at the bottom of the well head usually for above-mentioned bailing well, dead well, during oil well drags for oil intermittence or closes a well in, because the OIH atmospheric pressure recovers, liquid level rises, and the oil recovery worker can't observe this kind variation that takes place in the well wellbore again, oil gas takes place during the well head deblocking easily leak, cause environment pollution and potential safety hazard, be unfavorable for bailing well, stop the raising of well production management level and oilfield economic benefit.
Summary of the invention:
The purpose of this utility model be to provide a kind of not only effectively the shutoff well head but also can observe that borehole pressure changes and in order in the drainage well gas-liquid pressure release so that the pressure release type blowout preventer of enforcement oil salvage operation.
The utility model is to realize like this.This kind blowout preventer is made up of blowout preventer main body, disabler, sealing ring, tension spring, spring base, clip, opening controlling valve, and blowout preventer main center chamber internal upper part is provided with disabler, in the disabler seal groove sealing ring is housed; The disabler below is provided with the tension spring, and it has spring base, and spring base external screw thread and main center's chamber lower internal thread are connected and fixed; There is opening controlling valve blowout preventer main body top with the clip tipping, when closing a well in, flange is connected and fixed at the bottom of penetrating set bolt and nut and well head in 12 bolts hole that the blowout preventer lower body part flange upper edge periphery of the steel ring of packing in the steel ring slot is uniform, under the effect of tension spring, form the seal operation state between taper disabler and the main body, wellbore space can be realized shutoff is airtight, down-hole oil gas is excessive.When needing observation pressure to carry out oil salvage operation, riser upper end is hinged with opening controlling valve with clip on blowout preventer main body top, and on valve body one side tee piece tipping pressure meter or emptying valve, tightening opening controlling valve top handwheel makes the screw mandrel of its below descending, and with top under the disabler, make and form the gap between disabler and the main body inner wall, gas-liquid in the pit shaft just can be overflowed along this clearance channel, can observe borehole pressure by pressure meter changes, and, implement oil salvage operation by the pressure release of atmospheric valve relief liquor gas.
The utility model is simple in structure, be easy to make, easy to install, service behaviour is good, utilizes its effectively shutoff well head, observes borehole pressure at any time and changes, relief liquor gas pressure release in order, guarantee bailing well, the management of dead well ordinary production, avoid the initial ring environment pollution and cause potential safety hazard, help the raising of field production management level and economic benefit.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure, the utility model is made up of blowout preventer main body 1, disabler 2, sealing ring 3, tension spring 4, spring base 5, clip 6, opening controlling valve 7, its structure, assembled relation are as follows: be provided with disabler 2 in blowout preventer main body 1 upper chamber, in disabler 2 seal grooves sealing ring 3 be housed; Disabler 2 belows are provided with tension spring 4, and it has spring base 5, and spring base 5 external screw threads and main body 1 center cavity lower internal thread are connected and fixed; There is opening controlling valve 7 main body 1 top with clip 6 tippings.Wherein, blowout preventer main body 1 is made of the vertical tube on top and flange two parts of bottom, top vertical tube external surface processing one is used for the undergauge of front band, inner surface is processed into the up-small and down-big conical surface, realize sealing so that match with disabler 2 male cone (strobilus masculinus)s, flange matches at the bottom of lower flange dish diameter, screw, steel ring slot and the well mouth of oil well, and its lower end inner headed face is processed with and is used for being connected the internal thread of tightening with spring base 5.Disabler 2 is that an external diameter is up-small and down-big, the hollow-cone body of bottom band groove, does with No. 45 steels, and its external surface is provided with seal groove.Tension spring 4 adopts 60Si2Mn to make, and diameter and main body 1 inner diameter of centerpipe match.Spring base 5 is one " ⊥ " shape hollow circular tube base, and its periphery has the external screw thread that matches with main body 1 lower central chamber internal diameter.Opening controlling valve 7 is made up of valve body 8, handwheel 9, leading screw 10, screw 11 and encapsulant 12, and valve body 8 one sides are provided with the threeway in order to tipping pressure meter or atmospheric valve.By manually turn handwheel 9 drive leading screw 10 in the valve bodies 8 descending back down disabler 2 or go up exercise disabler 2 and reset, thereby realize the unlatching of this blowout preventer or close.
Claims (1)
1, a kind of pressure release type blowout preventer, form by blowout preventer main body (1), disabler (2), sealing ring (3), tension spring (4), spring base (5), clip (6), opening controlling valve (7), it is characterized in that: be provided with disabler (2) in blowout preventer main body (1) upper chamber, in disabler (2) seal groove sealing ring (3) be housed; Disabler (2) below is provided with tension spring (4), and it has spring base (5), and spring base (5) external screw thread and main body (1) center cavity lower internal thread are connected and fixed; There is opening controlling valve (7) main body (1) top with clip (6) tipping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091853 CN2816341Y (en) | 2005-07-16 | 2005-07-16 | Pressure-relief type well-plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091853 CN2816341Y (en) | 2005-07-16 | 2005-07-16 | Pressure-relief type well-plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2816341Y true CN2816341Y (en) | 2006-09-13 |
Family
ID=36996149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520091853 Expired - Fee Related CN2816341Y (en) | 2005-07-16 | 2005-07-16 | Pressure-relief type well-plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2816341Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996099A (en) * | 2012-12-08 | 2013-03-27 | 王俊德 | Environmental friendliness and energy conversation type tubing string drainage device of well mouth for work-over treatment |
| CN104481444A (en) * | 2014-11-14 | 2015-04-01 | 赵吉春 | Pressure monitoring and relieving device for closed oil well |
| CN109138892A (en) * | 2018-10-11 | 2019-01-04 | 王瑞东 | High pressure shut-in well oil-water well punching device under pressure and plugging holes device |
-
2005
- 2005-07-16 CN CN 200520091853 patent/CN2816341Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996099A (en) * | 2012-12-08 | 2013-03-27 | 王俊德 | Environmental friendliness and energy conversation type tubing string drainage device of well mouth for work-over treatment |
| CN102996099B (en) * | 2012-12-08 | 2015-11-25 | 王俊德 | Workover treatment well head environmental protection and energy saving tubing string liquid drainage device |
| CN104481444A (en) * | 2014-11-14 | 2015-04-01 | 赵吉春 | Pressure monitoring and relieving device for closed oil well |
| CN109138892A (en) * | 2018-10-11 | 2019-01-04 | 王瑞东 | High pressure shut-in well oil-water well punching device under pressure and plugging holes device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060913 |