CN201810273U - Ultrahigh pressure normally-closed valve for acidification and liquid drainage - Google Patents
Ultrahigh pressure normally-closed valve for acidification and liquid drainage Download PDFInfo
- Publication number
- CN201810273U CN201810273U CN2010205799959U CN201020579995U CN201810273U CN 201810273 U CN201810273 U CN 201810273U CN 2010205799959 U CN2010205799959 U CN 2010205799959U CN 201020579995 U CN201020579995 U CN 201020579995U CN 201810273 U CN201810273 U CN 201810273U
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- valve body
- sliding sleeve
- sealing
- sealing sliding
- acidizing
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- Expired - Lifetime
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- 239000007788 liquid Substances 0.000 title abstract 2
- 230000020477 pH reduction Effects 0.000 title 1
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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Abstract
The ultrahigh pressure normally-closed valve for acidizing and draining is applied to acidizing and draining construction of high-pressure gas field strata. The lower end of the valve body is connected with a lower joint, a hollow cylindrical sealing sliding sleeve is arranged in a central hole of the valve body, and a transverse hole is formed in the wall of the valve body; an annular sealing ring is arranged between the sealing sliding sleeve and the valve body, and the sealing ring is arranged on two sides of the transverse hole; a shearing pin is arranged at the lower end of the sealing sliding sleeve, and the sealing sliding sleeve is fixed at the upper end of the lower joint by the shearing pin; the upper end of the lower joint is provided with a central hole. The effect is as follows: the normally closed channel of the acidizing pipe column can be realized, and when the acidizing pipe column needs to be opened, the by-pass hole of the oil sleeve can be opened when a steel ball is put into the acidizing pipe column to realize acidizing and liquid drainage. And a one-way sealing valve is formed to ensure that the fluid flows out from the lower part of the valve body.
Description
Technical field
The utility model relates to production technique field, high pressure gas field, oil field, and particularly oil-well strata acidifying and discharge opeing construction is a kind of super-pressure normally close valve that is connected on the acidifying tubing string, for acidifying and discharge opeing provide passage.
Background technology
In recent years, certain oil field has many mouthfuls of leakages of high-pressure oil-gas well completion tubular columns, casing pressures to raise unusually, has caused enormous economic loss, and has hidden serious accident potential.
Tong Nanba oil district, dam, river 1 well reservoir pressure coefficient is up to 2.28, well depth 6130m, in August, 2006 test process, the closing well oil pressure reaches 94.2MPa, gives in the well surveying examination and brings many technical barriers, mainly comprise: 1, pressure height, well head and downhole tool are selected difficulty; 2, the ground flow erosion is serious; 3, contain Korrosionsmedium; 4, production string difficult design; 5, the difficulty that drives a well.Therefore conventional normally close valve can not satisfy above requirement, researches and develops this instrument for fear of serious accident potential.
The utility model content
The purpose of this utility model is: a kind of acidifying discharge opeing super-pressure normally close valve is provided, can makes acidifying tubing string normal conditions lower channel normally closed, when needs were opened, the tubing and casing by-pass prot was opened in the time of realizing acidifying and discharge opeing.Form an one-way sealing valve simultaneously, guarantee that fluid flows out from valve body lower portion.
The technical solution adopted in the utility model is: acidifying discharge opeing super-pressure normally close valve, mainly form by steel ball, sealing ring, sealing sliding sleeve, valve body, lower contact and shear pin, valve body is the cylinder bodily form, centre bore is arranged, there is internal thread upper end at valve body, in the lower end of valve body internal thread is arranged, and is connected with lower contact in the lower end of valve body, it is characterized in that: a hollow cylinder bodily form sealed sliding cover is arranged in the valve body centre bore, transverse holes is arranged on the valve body wall; Between sealing sliding sleeve and valve body O-ring seal is arranged, sealing ring is in the both sides of transverse holes.There is shear pin lower end at the sealing sliding sleeve, and shear pin will seal the upper end that sliding sleeve is fixed on lower contact; There is centre bore the upper end of lower contact.When pitching builds the pressure after shear pin cut off, the sealing sliding sleeve can slide into downwards in the centre bore of lower contact upper end.When the sealing sliding sleeve slides downwards transverse holes is opened.
Lower contact centre bore baseplane puts the distance of end face to sealed sliding greater than the valve body transverse holes to the distance of sealing sliding sleeve lower surface.
In order to prevent that shear pin from deviating from automatically, in the lower surface and the perpendicular end surface of sealing sliding sleeve screw hole is arranged, check pin is arranged in the screw hole, the end of check pin compresses shear pin.
Described sealing ring is a combined seal ring.
The summary acidifying discharge opeing operating principle of super-pressure normally close valve.Consult Fig. 1.Generally valve body 4 transverse holes are normally closed, when needs are opened, throw steel ball 1 from oil pipe, after steel ball 1 sedimentation 30-50 minute, suppress, cut off shear pin 6 when pressure raises from oil pipe, sliding sleeve 3 moves down, and the tubing and casing by-pass prot is opened when realizing acidifying and discharge opeing.Form an one-way sealing valve simultaneously, guarantee that fluid flows out from steel ball 1 bottom.Employing slides under the pitching effect and to realize that valve body closes, operating pressure 140MPa, and the tubing and casing by-pass prot is opened in the time of can realizing acidifying and discharge opeing.
The beneficial effects of the utility model: the utility model acidifying discharge opeing super-pressure normally close valve, can make acidifying tubing string normal conditions lower channel normally closed, when needs were opened, the tubing and casing by-pass prot was opened when the input steel ball can be realized acidifying and discharge opeing.Form an one-way sealing valve simultaneously, guarantee that fluid flows out from the steel ball bottom.This instrument has characteristics simple in structure, quick detachable and assembling.
Description of drawings
Fig. 1 is the utility model acidifying discharge opeing super-pressure normally close valve structural profile schematic diagram.
Among the figure, 1. steel ball, 2. sealing ring, 3. sealing sliding sleeve, 4. valve body, 5. lower contact, 6. shear pin, 7. check pin.
The specific embodiment
Embodiment 1: is example with an acidifying discharge opeing with the super-pressure normally close valve, and the utility model is described in further detail.
Consult Fig. 1.The utility model acidifying discharge opeing super-pressure normally close valve mainly is made up of steel ball 1, sealing ring 2, sealing sliding sleeve 3, valve body 4, lower contact 5 and shear pin 6.Valve body 4 is the cylinder bodily form, and external diameter 140mm has centre bore, in the upper end of valve body 4 internal thread is arranged, and in the lower end of valve body 4 internal thread is arranged, and is connected with a lower contact 5 in the lower end of valve body 4.The sealing sliding sleeve 3 that a hollow cylinder bodily form is arranged in valve body 4 centre bores has four transverse holes on valve body 4 walls.Between sealing sliding sleeve 3 and valve body 4 twice O-ring seal 2 is arranged, sealing ring 2 is in the both sides of transverse holes; Sealing ring 2 is combined seal rings.There are four shear pins 6 lower end at sealing sliding sleeve 3, and shear pin 6 will seal the upper end that sliding sleeve 3 is fixed on lower contact 5.There is centre bore the upper end of lower contact 5.The diameter of lower contact 5 upper end centre bores is identical with the external diameter of sealing sliding sleeve 3.Lower contact 5 centre bore baseplanes to the distance of sealing sliding sleeve 3 lower surfaces greater than valve body 4 transverse holes to sealing sliding sleeve 3 upper surfaces apart from 5mm.
Lower surface and perpendicular end surface at sealing sliding sleeve 3 have four screw holes, are fixed with a check pin 7 in the screw hole respectively, and the end of check pin 7 compresses shear pin 6.
Claims (4)
1. acidifying discharge opeing super-pressure normally close valve, mainly form by steel ball (1), sealing ring (2), sealing sliding sleeve (3), valve body (4), lower contact (5) and shear pin (6), valve body (4) has centre bore for the cylinder bodily form, there is internal thread upper end at valve body (4), there is internal thread lower end at valve body (4), be connected with lower contact (5) in the lower end of valve body (4), it is characterized in that: in valve body (4) centre bore, a hollow cylinder bodily form sealed sliding cover (3) is arranged, on valve body (4) wall transverse holes is arranged; Between sealing sliding sleeve (3) and valve body (4) O-ring seal (2) is arranged, sealing ring (2) is in the both sides of transverse holes; There is shear pin (6) lower end at sealing sliding sleeve (3), and shear pin (6) will seal the upper end that sliding sleeve (3) is fixed on lower contact (5); There is centre bore the upper end of lower contact (5).
2. acidifying discharge opeing super-pressure normally close valve according to claim 1 is characterized in that: the distance of sealing sliding sleeve (3) upper surface is arrived in lower contact (5) centre bore baseplane greater than valve body (4) transverse holes to the distance of sealing sliding sleeve (3) lower surface.
3. acidifying discharge opeing super-pressure normally close valve according to claim 1 and 2 is characterized in that: lower surface and perpendicular end surface at sealing sliding sleeve (3) have screw hole, and check pin (7) is arranged in the screw hole, and the end of check pin (7) compresses shear pin (6).
4. acidifying discharge opeing super-pressure normally close valve according to claim 1 and 2 is characterized in that: described sealing ring (2) is a combined seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205799959U CN201810273U (en) | 2010-10-22 | 2010-10-22 | Ultrahigh pressure normally-closed valve for acidification and liquid drainage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205799959U CN201810273U (en) | 2010-10-22 | 2010-10-22 | Ultrahigh pressure normally-closed valve for acidification and liquid drainage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810273U true CN201810273U (en) | 2011-04-27 |
Family
ID=43893216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205799959U Expired - Lifetime CN201810273U (en) | 2010-10-22 | 2010-10-22 | Ultrahigh pressure normally-closed valve for acidification and liquid drainage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810273U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405336A (en) * | 2014-10-15 | 2015-03-11 | 中国石油天然气股份有限公司 | Multifunctional tail pipe valve for operation under pressure |
| CN112523697A (en) * | 2019-09-18 | 2021-03-19 | 中国石油天然气股份有限公司 | Drill bit and drilling equipment |
-
2010
- 2010-10-22 CN CN2010205799959U patent/CN201810273U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405336A (en) * | 2014-10-15 | 2015-03-11 | 中国石油天然气股份有限公司 | Multifunctional tail pipe valve for operation under pressure |
| CN112523697A (en) * | 2019-09-18 | 2021-03-19 | 中国石油天然气股份有限公司 | Drill bit and drilling equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |