CN204782927U - Shear pin formula bypass valve - Google Patents
Shear pin formula bypass valve Download PDFInfo
- Publication number
- CN204782927U CN204782927U CN201520521908.7U CN201520521908U CN204782927U CN 204782927 U CN204782927 U CN 204782927U CN 201520521908 U CN201520521908 U CN 201520521908U CN 204782927 U CN204782927 U CN 204782927U
- Authority
- CN
- China
- Prior art keywords
- spline mandrel
- spline
- urceolus
- top connection
- bypass valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a shear pin formula bypass valve, including top connection, spline dabber, lower clutch, it has the top connection to detain the adapter sleeve in the upper end of spline dabber through the spiral shell, is provided with one section spline dabber urceolus outside the spline dabber, and the upper end and the top connection bottom of spline dabber urceolus have the certain distance, and the lower extreme of spline dabber urceolus passes through the spiral shell and buckles the outside of twisting at the lower clutch, be provided with the screw on the spline dabber urceolus, be provided with the mounting groove on the spline dabber outer wall that corresponds, fix spline dabber urceolus at the spline spindle through twisting the shear pin, it has the by pass port to open on the lower clutch lateral wall that lies in spline dabber bottom below, makes interior runner of spline dabber and the outside annular space of bypass communicate with each other, suppress fixed cover in the top connection lower part outside through the screw thread cover, set up the male thread that matees with the interior screw thread of suppressing fixed cover in the spline dabber urceolus upper portion outside. The utility model discloses simple structure, the ground pressure testing realizes easily, leans on the shear pin to replace other bypass valves to push down the time delay and closes the bypass valve.
Description
Technical field
The utility model relates to the bypass valve of oil and gas industry formation testing operation, especially a kind of shearing pin bypass valve.
Background technology
Current is that prospect pit or producing well all belong to inclined shaft, deep-well mostly, for guaranteeing the sealing effectiveness of packer, in Oil testing process, generally uses RTTS packer.But RTTS packer is not owing to having bypass system, be generally connect hydraulic pressure bypass, bore hole bypass or sleeve pipe bypass at an upper portion thereof, reach the pressure that balance packer is upper and lower.But at present bypass, complex structure, maintenance are debugged loaded down with trivial details, utilize existing equipment, and part bypass temporarily cannot realize examination high pressure and detect, and due to the complexity of structure, cause sealing position many, easily occur Underwell leakage, different well ' s conditions, different process are also not quite similar to bypass function demand, such as some needs to press down time delay, some then needs to propose time delay, and some needs to limit the pressure of the drill and closes, and some needs negative pressure to lock.In stage In Oil Field Exploration And Development middle and later periods, standard testing procedures demand is weakened gradually, to progressively capture test stage along with the market demand derives measuring technology, bypass is complicated due to the maintenance of unit cost high maintenance, pilot scale study, adds cost and the labour intensity of derivative measuring technology.
Utility model content
Technical problem to be solved in the utility model is, provides one can meet packer operation needs, possesses again better simply structure and easy to operate, and structure is simple, can interview interior pressure easily and control the shearing pin bypass valve that bypass closes tonnage.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of shearing pin bypass valve, comprise top connection, spline mandrel, lower contact, link female connector in the upper end of spline mandrel by spiral shell and have top connection, in the lower end of spline mandrel, cover has the lower contact that can move up and down along spline mandrel outer wall, and the spline mandrel outer wall contacted with lower contact is provided with "O"-ring; Have one section of spline mandrel urceolus be enclosed within spline mandrel in spline mandrel arranged outside, upper end and the top connection bottom of spline mandrel urceolus have certain distance, and the outside being screwed in lower contact is buckled in the lower end of spline mandrel urceolus by spiral shell, fix with lower contact; Spline mandrel urceolus being provided with screw, the spline mandrel outer wall of correspondence is provided with mounting groove, by being screwed into shear pin, spline mandrel urceolus being fixed on spline mandrel; Have by-pass prot being positioned on the lower contact sidewall below multiple key core axle bottom, spline mandrel inner flow passage and bypass external rings Kongxiang are led to; Suppress fixed cover at top connection lower outside by screw thread cover, arrange and the male thread suppressed screw thread in fixed cover and mate in spline mandrel urceolus upper outside.
The male thread height of described spline mandrel urceolus upper outside is the half suppressing screw thread height in fixed cover.
Described male thread and interior screw thread are buttress thread.
Fixing in order to prevent back-off from strengthening, suppress fixed cover and hold-down screw is set up in top connection, set up hold-down screw at spline mandrel urceolus and lower contact.
The spline mandrel outer wall contacted with top connection is provided with "O"-ring.
Described shear pin is 2-6.
Described by-pass prot is 6.
The beneficial effects of the utility model are: shearing pin bypass valve of the present utility model is connected to RTTS packer, and the packer top of open hole packer etc. not with bypass itself, as the auxiliary bypass valve of packer.Enter under facilitating testing tool and trip out, balance packer upper and lower pressure, avoids producing swabbing action, brings out gas blowout accident and occur.
Accompanying drawing explanation
Fig. 1 is the structural representation of shearing pin bypass valve of the present utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1, shearing pin bypass valve of the present utility model, comprise top connection 1, spline mandrel 4, lower contact 9, link female connector in the upper end of spline mandrel 4 by spiral shell and have top connection 1, in the lower end of spline mandrel 4, cover has the lower contact 9 that can move up and down along spline mandrel 4 outer wall, and spline mandrel 4 outer wall contacted with lower contact 9 is provided with "O"-ring 8; One section of spline mandrel urceolus 6 be enclosed within spline mandrel 4 is had in spline mandrel 4 arranged outside, upper end and top connection 1 bottom of spline mandrel urceolus 6 have certain distance, the outside being screwed in lower contact 9 is buckled in the lower end of spline mandrel urceolus 6 by spiral shell, fix with lower contact 9; Spline mandrel urceolus 6 being provided with screw, spline mandrel 4 outer wall of correspondence is provided with mounting groove, by being screwed into shear pin 7, spline mandrel urceolus 6 being fixed on spline mandrel 4; Have by-pass prot 10 being positioned on lower contact 9 sidewall below multiple key core axle 4 bottom, spline mandrel 4 inner flow passage and bypass external rings Kongxiang are led to; Suppress fixed cover 3 at top connection 1 lower outside by screw thread cover, arrange in spline mandrel urceolus 6 upper outside and suppress the male thread that in fixed cover 3, screw thread mates.
Preferably, the male thread height of described spline mandrel urceolus 6 upper outside is the half suppressing screw thread height in fixed cover 3.Described male thread and interior screw thread are buttress thread.
Fixing in order to prevent back-off from strengthening, set up hold-down screw 2 with top connection 1 suppressing fixed cover 3, set up hold-down screw 11 in spline mandrel urceolus 6 and lower contact 9.
Spline mandrel 4 outer wall contacted with top connection 1 is provided with "O"-ring 5.
Described shear pin 7 is 2-6.Described by-pass prot 10 is 6.
Specifically, spline mandrel 4 loads spline mandrel urceolus 6, and top connection 1 and ground are suppressed after fixed cover 3 is connected, with hold-down screw 2 when going into the well, and top connection 1 and spline mandrel 4 screwed connection.Lower contact 9 screwed connection of spline mandrel urceolus 6 and band by-pass prot 10, hold-down screw 11 is fixed.Shear pin 7 is contained on spline mandrel urceolus 6 and is connected with spline mandrel 4.The operating principle of shear pin bypass is loaded by the shear pin of some according to hole condition on ground, incorporates into well with RTTS packer.Due to the position-limiting action of shear pin before setting, make the by-pass prot of shear pin bypass be in opening all the time, packer two-way pressure is balanced.When packer setting operates, transfer tubing string suspending weight and cut off by shear pin, spline mandrel is descending, by-pass prot is closed, guarantees test process sealing performance.After test terminates, upper lifting pipe post, spline mandrel is up, opens by-pass prot, so just can balance packer two-way pressure, make removing seal for packer, then trip out tubing string.
Spline mandrel urceolus 6 buttress thread is the half of the outer buttress thread of top connection, and during the pressure testing of ground, spline mandrel 4 moves down, top connection 1 step surface contacts with spline mandrel urceolus 6 step surface, lays down hold-down screw 2, suppresses fixed cover 3 and moves back button, be screwed on spline mandrel urceolus 6, carry out ground pressure testing test, after qualified, take recovery former state apart, shear pin 7 is installed, according to hole condition needs, 2-6 can be installed, maximum control 100KN.
During the pressure testing of ground, do not fill shear pin, spline mandrel moves down closedown by-pass prot, top connection 1 is connected with suppressing fixed cover 3 with spline mandrel urceolus 6, recovery former state after pressure testing completes.
In top connection, spline mandrel urceolus there is buttress thread, can be used for connection suppresses fixed cover, ground is when bypass carries out debugging pressure testing, spline mandrel goes downwards to bottom dead centre, clear water is full of in instrument, upper lower contact two ends, respectively action pressure-testing joint is installed, to pressure 50MPa in instrument examination, move with suppressing on fixed cover restriction spline mandrel, invariably interview presses through journey midway and opens bypass passageways, after ground pressure testing completes, lay down pressure in instrument, dismantle and suppress fixed cover, suppressing fixed cover is screwed in top connection, spline mandrel moves to top dead-centre, open bypass passageways.Shear pin is installed, shear pin one end is screw thread, is fixed on spline mandrel urceolus, and the other end inserts spline mandrel, spline mandrel has groove, shear pin is installed quantity and can be regulated, and according to different hole condition requirements, can install 2-6 shear pin in ground, midway in going down process is avoided to close bypass midway base sealed packer, when installing 6 shear pins, in going down process, the power that is hampered is maximum is no more than 10 tons.The utility model structure is simple, and ground pressure testing easily realizes, and replaces other bypass valve to press down the new paragon of time-delay closing bypass valve by shear pin, and the tonnage of closing bypass valve is controlled.Eliminate time-delay closing bypass valve arrangement complicated, seal is too much, and easily lose envelope, ground is not easy the shortcoming of carrying out inner pressure test.
The utility model shear pin bypass valve and RTTS packer with the use of, RTTS bypass valve or the hydraulic pressure bypass valve of import can be replaced, and low price, structure is simple, easy to operate, its effect is better than external imported product, and its cost of manufacture is only 1/15 of external imported product, acquisition cost can be saved.This device can realize ground close bypass valve carries out to instrument examination in pressure, and the pressure testing of external product ground, operation maintenance difficulty.Shear pin quantity can adjust, and can fill 2-6 shear pin according to different process, maximum closedown bypass shearing force 100KN.
In sum, content of the present utility model is not limited in the above-described embodiment, knowledgeable people in same area can propose other embodiment easily within technological guidance's thought of the present utility model, but this embodiment is all included within scope of the present utility model.
Claims (7)
1. shear pin bypass valve for one kind, comprise top connection (1), spline mandrel (4), lower contact (9), it is characterized in that, link female connector in the upper end of spline mandrel (4) by spiral shell and have top connection (1), in the lower end of spline mandrel (4), cover has the lower contact (9) that can move up and down along spline mandrel (4) outer wall, and spline mandrel (4) outer wall contacted with lower contact (9) is provided with "O"-ring (8); One section of spline mandrel urceolus (6) be enclosed within spline mandrel (4) is had in spline mandrel (4) arranged outside, upper end and top connection (1) bottom of spline mandrel urceolus (6) have certain distance, the outside being screwed in lower contact (9) is buckled in the lower end of spline mandrel urceolus (6) by spiral shell, fix with lower contact (9); Spline mandrel urceolus (6) is provided with screw, spline mandrel (4) outer wall of correspondence being provided with mounting groove, by being screwed into shear pin (7), spline mandrel urceolus (6) being fixed on spline mandrel (4); Have by-pass prot (10) being positioned on lower contact (9) sidewall below multiple key core axle (4) bottom, spline mandrel (4) inner flow passage and bypass external rings Kongxiang are led to; Suppress fixed cover (3) at top connection (1) lower outside by screw thread cover, the male thread mated with the interior screw thread suppressing fixed cover (3) is set in spline mandrel urceolus (6) upper outside.
2. shearing pin bypass valve according to claim 1, is characterized in that, the male thread height of described spline mandrel urceolus (6) upper outside is the half suppressing the interior screw thread height of fixed cover (3).
3. shearing pin bypass valve according to claim 2, is characterized in that, described male thread and interior screw thread are buttress thread.
4. shearing pin bypass valve according to claim 1, it is characterized in that, fixing in order to prevent back-off from strengthening, set up hold-down screw (2) suppressing fixed cover (3) and top connection (1), set up hold-down screw (11) in spline mandrel urceolus (6) and lower contact (9).
5. shearing pin bypass valve according to claim 1, is characterized in that, spline mandrel (4) outer wall contacted with top connection (1) is provided with "O"-ring (5).
6. shearing pin bypass valve according to claim 1, is characterized in that, described shear pin (7) is 2-6.
7. shearing pin bypass valve according to claim 1, is characterized in that, described by-pass prot (10) is 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520521908.7U CN204782927U (en) | 2015-07-17 | 2015-07-17 | Shear pin formula bypass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520521908.7U CN204782927U (en) | 2015-07-17 | 2015-07-17 | Shear pin formula bypass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782927U true CN204782927U (en) | 2015-11-18 |
Family
ID=54522995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520521908.7U Expired - Fee Related CN204782927U (en) | 2015-07-17 | 2015-07-17 | Shear pin formula bypass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204782927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989322A (en) * | 2015-07-17 | 2015-10-21 | 中国石油集团渤海钻探工程有限公司 | Shear pin type bypass valve |
-
2015
- 2015-07-17 CN CN201520521908.7U patent/CN204782927U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989322A (en) * | 2015-07-17 | 2015-10-21 | 中国石油集团渤海钻探工程有限公司 | Shear pin type bypass valve |
| CN104989322B (en) * | 2015-07-17 | 2018-10-16 | 中国石油集团渤海钻探工程有限公司 | Shearing pin type bypass valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20170717 |