CN201486524U - Underground annulus pressure opening valve - Google Patents
Underground annulus pressure opening valve Download PDFInfo
- Publication number
- CN201486524U CN201486524U CN2009201729009U CN200920172900U CN201486524U CN 201486524 U CN201486524 U CN 201486524U CN 2009201729009 U CN2009201729009 U CN 2009201729009U CN 200920172900 U CN200920172900 U CN 200920172900U CN 201486524 U CN201486524 U CN 201486524U
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- CN
- China
- Prior art keywords
- valve
- pressure
- urceolus
- guiding valve
- slide valve
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model relates to an underground annulus pressure opening valve, wherein a slide valve and an outer tube are connected through a shearing pin, an air-tight air cavity is arranged on a seal ring arranged on the step of the slide valve and the outer tube, a sliding sleeve and an upper joint are sealed by the seal ring, thereby guaranteeing the isolation of inner pressure and outer pressure of tools, and high pressure which is additionally applied in the pipe stem when conducting reconstruction measures can be borne, the pressure bearing surface of the slide valve can receive annulus pressure from the outside of the pipe, when the force of the pressure bearing surface is bigger than the shearing force of a pin, the pin is sheared, the slide valve squeezes the air-tight air cavity under the function of pressure of a peripheral liquid column, the slide valve downwards moves, and enters a self-locking sleeve, ratchets are geared for achieving the fixation of the slide valve, and the purpose of permanently opening a circulation hole is achieved. The underground annulus pressure opening valve can be used as a circulation valve, can be further used for blending heavy crude into thin oil and testing wells, and can be used as aerated water for testing oil.
Description
Technical field
The present invention relates to a kind of oil gas well formation testing pilot production downhole tool, especially relate to a kind of valve that utilizes opened by pressure.
Background technology
Progress along with petroleum exploration and development, oil gas well formation testing pilot production technology is brought in constant renewal in, to conventionally test, pilot production tubing string internal diameter with set up endless form etc. and constantly propose new requirement, method at present commonly used is that pitching is opened normally close valve or thrown bar and open to suppress in disconnected pin valve or the tubing string and open modes such as pumping valve and set up the oil pipe circulation canal in the tubing string, adopt pitching or throw the bar mode, can dwindle the internal diameter of tubing string, influence the well testing or the swabbing operation in later stage, and this kind valve is can meet accident junk the time in tubing string, cause circulating valve to open in advance, thereby do over again; The principle that pumps valve is regularly to open automatically when the tubing string internal pressure reaches one, if test result need be carried out well stimulation, operation pressure just is restricted, even can't carry out the reservoir reconstruction measure at all, just must change tubing string again this moment, influenced construction speed.
The utility model content
Problem at above prior art existence, the utility model provides a kind of exerting pressure outside tubing string to open the technical scheme of pipe internal valve, specifically in the following way: a kind of down-hole annular pressure operable valve, comprise the top connection, urceolus and the lower contact that are linked in sequence, it is characterized in that described urceolus inside is equipped with guiding valve, described guiding valve is towards the pressure-bearing surface of well head one end for sealing, air chamber is arranged between described guiding valve and the urceolus and from lock tube, described top connection is connected coincidence place with urceolus side opening.
An optimal way of the present utility model: described guiding valve external surface reaches corresponding ratchet on the lock tube inner surface.
Another optimal way of the present utility model: described ratchet has the angle of slope, and guiding valve is opposite with the angle of slope that self-locking puts ratchet, and both contact back engaging sealing.
An also optimal way of the present utility model: be connected by shear pin between described guiding valve and the urceolus.
Another optimal way of the present utility model: there is the sealing ring sealing at described guiding valve, top connection, urceolus, the lower contact place of interconnecting.
An optimal way more of the present utility model: described air chamber is an annular seal space, and described in lock tube is installed in air chamber below, outer tube inner wall groove, its lower end is supported on the lower contact end face.
Another optimal way of the present utility model: described top connection has four and corresponding one by one respectively with side opening on the urceolus.
The technical program is changed into the operation of tubing string external-open valve with opening the valve operation in the present tubing string, has guaranteed the maximum inner diameter in the tubing string, has avoided the potential safety hazard that the throwing instrument brings in tubing string.
Guiding valve adopts shear pin to be connected with urceolus, adopt sealing ring to set up closed pore in guiding valve, top connection, lower contact and urceolus junction and press the chamber, guaranteed that the instrument external and internal pressure is isolated, and can bear high pressure additional when carrying out modification measures in the tubing string, the guiding valve pressure-bearing surface accepts to come from the outer pressure of pipe, when the power that is subjected to during greater than the shearing force of pin pin cut off, guiding valve pushes the confined air air cavity under the effect of annular space head of liquid, guiding valve moves downward, and enter into from lock tube, both ratchet engagement are fixed guiding valve, the purpose that side opening realization in upper end is forever opened.This programme tool bore is big, by annular pressure operation, has avoided under high pressure opening the security risk of valve, and efficient height, accident rate are low, easy to use.
Description of drawings
Fig. 1 the utility model structural relation schematic diagram
The specific embodiment
As shown in Figure 1, the technical program is installed the sealing ring 11 of guiding valve 4 and urceolus 2 earlier, guiding valve 4 is inserted urceolus 2 and makes the pin hole alignment, pin 10 quantity are installed as required, utilize the top connection 1 and the screw thread of urceolus 2 that both are linked together again, four side openings 8 of urceolus 2 upper ends overlap with four side openings 8 of top connection 1 lower end, the top of guiding valve 4 contacts with top connection 1 above the side opening 8 of top connection 1 and seals by sealing ring 11, the pressure-bearing surface 9 that the end face of guiding valve 4 is solid, the adapting pipe internal pressure, guiding valve 4 contacts with urceolus 2 below side opening 8 and seals by sealing ring 11, top connection 1 is sealed by guiding valve 4 with the side opening on the urceolus 28 this moments fully, makes valve interior isolated fully with valve outward.Insert from urceolus 2 bottoms again from lock tube 5 in urceolus 2 lower recess, from lock tube 5 is a hollow cylinder that is enclosed within outside the guiding valve 4, the ratchet 6 that inner surface has multiple tracks to tilt, utilize screw thread that urceolus 2 is connected with lower contact 3 at last, on the contact surface of lower contact 3 and urceolus 2, sealing ring 11 is installed also, lower contact 3 after fixing, top are inserted urceolus 2 inside and are contacted from lock tube 5, will fix from lock tube 5 with the groove of urceolus 2.The lower end external surface of guiding valve 4 contacts with lower contact 3 top inner surfaces and seals by sealing ring 11, the ratchet 6 that on guiding valve 4 external surfaces below the side opening 8, has multiple tracks to tilt, the angle that ratchet 6 tilts is opposite with the angle that ratchet on lock tube 56 tilts, ratchet below, self-locking cover top guiding valve and urceolus form a sealing air chamber 7, and the length of air chamber 〉=guiding valve end face is to the distance of side opening below.
This device is gone into well with packer and other testing tool, be connected testing tool or packer top, 19 pin holes of this device design, every pin shearing force 5.6MPa, the degree of depth, well killing fluid density and other annular pressure control tool that can be lowered to according to valve select pin quantity to satisfy construction requirement arbitrarily.When needs are opened valve, by outside instrument, exerting pressure, when the pressure that touches when guiding valve pressure-bearing surface 9 was converted to longitudinal force and meets or exceeds the total shearing force of pin, pin 10 was cut off, and the top head of liquid acts on the guiding valve pressure-bearing surface 9, atmospheric pressure in the extruding confined air air cavity 7, guiding valve 4 is fallen rapidly, and the ratchet 6 on guiding valve 4 surfaces snaps in the ratchet 6 of lock tube 5 inner surfaces, and the side opening 8 of guiding valve 4 tops is exposed, realize the tubing string internal and external pressure balance, and set up circulation canal.
This device can be used for doing circulating valve, also can do viscous crude and mix rare well testing of carrying out simultaneously, also can do the aerated water formation testing.
Claims (7)
1. down-hole annular pressure operable valve, comprise the top connection (1), urceolus (2) and the lower contact (3) that are linked in sequence, it is characterized in that, described urceolus (2) inside is equipped with guiding valve (4), described guiding valve is towards the pressure-bearing surface (9) of well head one end for sealing, air chamber (7) is arranged between described guiding valve (4) and the urceolus (2) and from lock tube (5), described top connection (1) is connected coincidence place with urceolus (2) side opening (8).
2. a kind of down-hole annular pressure operable valve as claimed in claim 1 is characterized in that, described guiding valve (4) external surface reaches has corresponding ratchet (6) on lock tube (5) inner surface.
3. a kind of down-hole annular pressure operable valve as claimed in claim 2 is characterized in that described ratchet (6) has the angle of slope, and guiding valve (4) is opposite with the angle of slope of going up ratchet (6) from lock tube (5), and both contact back engaging sealing.
4. a kind of down-hole annular pressure operable valve as claimed in claim 1 is characterized in that, is connected by shear pin (10) between described guiding valve (4) and the urceolus (2).
5. a kind of down-hole annular pressure operable valve as claimed in claim 1 is characterized in that, there is sealing ring (11) sealing at described guiding valve (4), top connection (1), urceolus (2), lower contact (3) place of interconnecting.
6. a kind of down-hole annular pressure operable valve as claimed in claim 1 is characterized in that described air chamber (7) is an annular seal space, and described in lock tube (5) is installed in air chamber (7) below, urceolus (2) inboard wall groove, its lower end is supported on lower contact (3) end face.
7. a kind of down-hole annular pressure operable valve as claimed in claim 1 is characterized in that, described top connection (1) has four and corresponding one by one respectively with side opening (8) on the urceolus (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201729009U CN201486524U (en) | 2009-08-20 | 2009-08-20 | Underground annulus pressure opening valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201729009U CN201486524U (en) | 2009-08-20 | 2009-08-20 | Underground annulus pressure opening valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201486524U true CN201486524U (en) | 2010-05-26 |
Family
ID=42425406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201729009U Expired - Lifetime CN201486524U (en) | 2009-08-20 | 2009-08-20 | Underground annulus pressure opening valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201486524U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650200A (en) * | 2011-02-23 | 2012-08-29 | 新疆华油油气工程有限公司 | Shot-free unidirectional blocking valve |
| EP2737167A4 (en) * | 2011-05-30 | 2015-07-22 | Packers Plus Energy Serv Inc | Wellbore cementing tool having one way flow |
-
2009
- 2009-08-20 CN CN2009201729009U patent/CN201486524U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650200A (en) * | 2011-02-23 | 2012-08-29 | 新疆华油油气工程有限公司 | Shot-free unidirectional blocking valve |
| CN102650200B (en) * | 2011-02-23 | 2014-12-10 | 新疆华油油气工程有限公司 | Shot-free unidirectional blocking valve |
| EP2737167A4 (en) * | 2011-05-30 | 2015-07-22 | Packers Plus Energy Serv Inc | Wellbore cementing tool having one way flow |
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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: 20100526 |