CN202064892U - One-way constant pressure valve - Google Patents
One-way constant pressure valve Download PDFInfo
- Publication number
- CN202064892U CN202064892U CN2011201200191U CN201120120019U CN202064892U CN 202064892 U CN202064892 U CN 202064892U CN 2011201200191 U CN2011201200191 U CN 2011201200191U CN 201120120019 U CN201120120019 U CN 201120120019U CN 202064892 U CN202064892 U CN 202064892U
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- Prior art keywords
- standing valve
- seat
- constant pressure
- valve seat
- valve cover
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Abstract
The utility model discloses a one-way constant pressure valve, which is applied to the technical field of oil extraction of an oil field. A central screw hole of a lower joint is connected with a cylindrical pressure adjusting seat; the lower joint is in threaded connection with an outer barrel; the upper end face of the pressure adjusting seat is provided with a spring and a fixed valve seat; through holes are uniformly distributed on a circular cylinder; the top of the fixed valve seat is connected to the lower end of a central hole of the fixed valve seat; the upper part of the fixed valve seat is provided with a steel ball; transverse holes are uniformly distributed on the upper end of a fixed valve cover; the upper end of the outer barrel is connected with an upper joint; the upper end of the fixed valve cover is arranged in a central hole of the upper joint; and the outer wall of the upper end of the fixed valve cover is in slide fit with the inner wall of the central hole of the upper joint. The one-way constant pressure valve has the effects that: the pressure on the upper part of a pump can be transferred to a lower packer and setting can be performed; a non-productive layer is packed; after pressure is relieved, the one-way constant pressure valve automatically restores the effect of fixing the valve; and setting and normal water exclusion production are realized.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, and particularly a kind of down-hole special tool is a kind of and the Y341 hydraulic compression type packer is used, and is applicable to the oil well well of sleeve pipe damage and the unidirectional constant pressure valve of interlayer producing well oil well.
Background technology
In oilfield development process, the oil well of sleeve pipe damage, individual layer water logging or serious interlayer interference, low or the produce oil not of excavating technology oil output per well is closed in employing, there is not development benefit, need to adopt packer that sleeve pipe is damaged the little oil reservoir of interval, waterflooded reservoir or potentiality and give the packing oil recovery, be referred to as " every adopting ", only produce potential oil reservoir, recover the existing oil productive capacity of oil well, improve well oil output and development benefit.
At present, mainly be to use Y211 and Y221 packer or Y341 hydraulic compression type packer every excavating technology, mainly there are following two problems in the application:
1, utilize Y211 and Y221 packer every adopting, when packer setting, need and necessarily pull out distance, set required load to reach, cause tubing bending after setting, in process of production, oil pipe bar eccentric wear can take place damage, make the run-down or sucker rod of oil pipe disconnected, cause pump detection period to shorten, need to change wearing and tearing oil pipe bar, increased pump detection and workover expense and oil pipe, sucker rod replacement cost.
2, utilize the Y341 hydraulic compression type packer every adopting, usually packer is positioned at the above a certain degree of depth of the following isolated interval of oil well pump, need to suppress and oil well pump self structure bottom is the standing valve ball seat with cementing truck, the standing valve ball seat is unidirectional ball seat, pump top oil pipe internal pressure can't be passed to packer, make the Y341 packer setting.When using at the scene, oil well pump standing valve cover need be reequiped specially, use inconvenience.
The utility model content
The purpose of this utility model is: a kind of unidirectional constant pressure valve is provided, with the supporting use of Y341 packer, the pump upper pressure is passed to the pump lower packer and sets, the packing nonpay zone, after the pressure release, unidirectional constant pressure valve recovers the standing valve effect automatically, realizes setting and normally every adopting production.Overcome during Y211 and Y221 packer and Y341 hydraulic compression type packer use at the scene the production inconvenience that the deficiency of the tubing bending of existence and the repacking of oil well pump standing valve cover bring.
The technical solution adopted in the utility model is: unidirectional constant pressure valve, mainly to form by top connection, standing valve cover, steel ball, standing valve seat, spring, pressure regulating seat and lower contact, and there is external screw thread the lower end of lower contact, can be connected on the tubing string; It is characterized in that: lower contact has center screw, and the lower contact center screw is connected with cylinder bodily form pressure regulating seat, and pressure regulating seat has centre bore; By the urceolus that has been threaded, the upper end of pressure regulating seat is in urceolus in the upper end of lower contact; In the upper surface of pressure regulating seat a spring is arranged, spring is in urceolus; A standing valve seat is arranged at the top of spring, the standing valve seat has the center for the cylinder bodily form, there is circular cylinder the lower end of standing valve seat, is evenly distributed with through hole on circular cylinder, and the screw top of standing valve seat is connected the lower end of standing valve cover centre bore; On the top of standing valve seat a steel ball is arranged, steel ball plays the effect of one way valve; The standing valve cover is the cylinder bodily form, is evenly distributed with transverse holes in the upper end of standing valve cover; Screw thread is connected with top connection in the upper end of urceolus, the upper end of standing valve cover is in the top connection centre bore, be slidingly matched between the upper end outer wall of standing valve cover and the top connection center bore inner wall, in the upper end of top connection external screw thread arranged, top connection can be connected on the tubing string.
Sketch the course of work of unidirectional constant pressure valve.Consult Fig. 1.Unidirectional constant pressure valve is connected in the oil well pipe.By spring 5 support fixation valve seats 4, standing valve cover 2 is installed in the centre bore of top connection 1, four transverse holes are closed.Suppress to standing valve seat 4 opening pressures with cementing truck at well head, reach the pressure that is enough to overcome spring 5 when upper pressure, spring 5 is compressed, standing valve seat 4 drives standing valve cover 2 and moves down, open four transverse holes in standing valve cover 2 upper ends, liquid makes unidirectional constant pressure valve up/down perforation through four transverse holes, and unidirectional constant pressure valve upper liquid flows to the bottom of unidirectional constant pressure valve.Connect and the effect of protection internals thereby play.After the well head release, standing valve seat 4 automatically resets under spring 5 effects, and four transverse holes of standing valve cover 2 upper ends enter in top connection 1 centre bore sealed, recover the sealing function of unidirectional constant pressure valve, cooperate the oil well pump operate as normal.
The beneficial effects of the utility model: the unidirectional constant pressure valve of the utility model, the pump upper pressure can be passed to the pump lower packer and set, the packing nonpay zone, after the pressure release, unidirectional constant pressure valve recovers the standing valve effect automatically, realizes setting and normally every adopting production.Through design, test, improvement, the field trial effect is better, and pump detection period has prolonged 60 days with the Y211 packer when adopting.Prove that unidirectional constant pressure valve can realize that the Y341 packer effectively sets and fast normally every adopting production.Can effectively prevent side-abrasion of rod string than conventional mechanical set packer Y211 and Y221 every adopting well, prolong pump detection period, and unidirectional constant pressure valve installs, suppresses and set simply, can be repeatedly used.
Description of drawings
Fig. 1 is the unidirectional constant pressure valve structural profile of a utility model schematic diagram.
Among the figure, 1-top connection, 2-standing valve cover, 3-steel ball, 4-standing valve seat, 5-spring, 6-pressure regulating seat, 7-lower contact.
The specific embodiment
Embodiment 1: with a unidirectional constant pressure valve is example, and the utility model is described in further detail.
Consult Fig. 1.The unidirectional constant pressure valve of the utility model mainly is made up of top connection 1, standing valve cover 2, steel ball 3, standing valve seat 4, spring 5, pressure regulating seat 6 and lower contact 7.
There is external screw thread the lower end of lower contact 7.Lower contact 7 has center screw, and there is screw thread at lower contact 7 centers, is connected with a cylinder bodily form pressure regulating seat 6 at lower contact 7 centre bore inner bolt holes, and pressure regulating seat 6 has centre bore, and liquid can pass through.In the upper end of lower contact 7 by the urceolus 8 that has been threaded.The upper end of pressure regulating seat 6 is in urceolus 8; In the upper surface of pressure regulating seat 6 a compression spring 5 is arranged, compression spring 5 is in urceolus 8; Upper top at compression spring 5 has a standing valve seat 4, and standing valve seat 4 has the center for the cylinder bodily form; There is circular cylinder the lower end of standing valve seat 4, is evenly distributed with four through holes on circular cylinder.The screw top of standing valve seat 4 is connected the lower end of standing valve cover 2 centre bores.On the top of standing valve seat 4 steel ball 3 is arranged, steel ball 3 plays the effect of one way valve.Standing valve cover 2 is the cylinder bodily form, is evenly distributed with four transverse holes in the upper end of standing valve cover 2.Screw thread is connected with top connection 1 in the upper end of urceolus 8, and the upper end of standing valve cover 2 is slidingly matched between the upper end outer wall of standing valve cover 2 and top connection 1 center bore inner wall in top connection 1 centre bore.There is external screw thread upper end in top connection 1.
Claims (1)
1. a unidirectional constant pressure valve mainly is made up of top connection (1), standing valve cover (2), steel ball (3), standing valve seat (4), spring (5), pressure regulating seat (6) and lower contact (7), and there is external screw thread the lower end of lower contact (7); It is characterized in that: lower contact (7) has center screw, and lower contact (7) center screw is connected with cylinder bodily form pressure regulating seat (6), and pressure regulating seat (6) has centre bore; By the urceolus that has been threaded (8), the upper end of pressure regulating seat (6) is in urceolus (8) in the upper end of lower contact (7); In the upper surface of pressure regulating seat (6) spring (5) is arranged, spring (5) is in urceolus (8); At the top of spring (5) a standing valve seat (4) is arranged, standing valve seat (4) has the center for the cylinder bodily form, there is circular cylinder the lower end of standing valve seat (4), be evenly distributed with through hole on circular cylinder, the screw top of standing valve seat (4) is connected the lower end of standing valve cover (2) centre bore; On the top of standing valve seat (4) steel ball (3) is arranged, steel ball (3) plays one way valve; Standing valve cover (2) is the cylinder bodily form, is evenly distributed with transverse holes in the upper end of standing valve cover (2); Upper end screw thread at urceolus (8) is connected with top connection (1), the upper end of standing valve cover (2) is in top connection (1) centre bore, be slidingly matched between the upper end outer wall of standing valve cover (2) and top connection (1) center bore inner wall, external screw thread arranged in the upper end of top connection (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201200191U CN202064892U (en) | 2011-04-22 | 2011-04-22 | One-way constant pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201200191U CN202064892U (en) | 2011-04-22 | 2011-04-22 | One-way constant pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202064892U true CN202064892U (en) | 2011-12-07 |
Family
ID=45058760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201200191U Expired - Lifetime CN202064892U (en) | 2011-04-22 | 2011-04-22 | One-way constant pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202064892U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703750A (en) * | 2015-11-12 | 2017-05-24 | 中海石油深海开发有限公司 | Deep water sleeve high pressure spring type decompression valve |
-
2011
- 2011-04-22 CN CN2011201200191U patent/CN202064892U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703750A (en) * | 2015-11-12 | 2017-05-24 | 中海石油深海开发有限公司 | Deep water sleeve high pressure spring type decompression valve |
| CN106703750B (en) * | 2015-11-12 | 2019-04-12 | 中海石油深海开发有限公司 | Deep water casing high pressure Spring-Loaded Pressure Relief Valve |
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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 |
Granted publication date: 20111207 |
|
| CX01 | Expiry of patent term |