CN207296965U - A kind of oil/gas well casing safety valve - Google Patents
A kind of oil/gas well casing safety valve Download PDFInfo
- Publication number
- CN207296965U CN207296965U CN201721427362.4U CN201721427362U CN207296965U CN 207296965 U CN207296965 U CN 207296965U CN 201721427362 U CN201721427362 U CN 201721427362U CN 207296965 U CN207296965 U CN 207296965U
- Authority
- CN
- China
- Prior art keywords
- oil
- safety valve
- gas well
- well casing
- connecting cylinder
- 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.)
- Active
Links
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
It the utility model is related to oil/gas well downhole tool technical field,Specifically disclose a kind of oil/gas well casing safety valve,Include top connection successively,Outer connecting cylinder and lower contact,It is equipped with valve seat successively between outer connecting cylinder and lower contact,Valve chamber,Being equipped with successively in the outer connecting cylinder can sliding sleeve in axial sliding,Interior connecting cylinder and unlatching sleeve,Oil/gas well casing safety valve provided by the utility model,Switching manipulation is carried out by the switching tools for being connected on oil pipe end,Hydraulic control unit need not be configured,Save production cost and maintenance cost,The piston and liquid controling pipe line for being not required pilot safety valve to have,Avoid potential leakage point,So as to improve the reliability of instrument,When work string is proposed out of well,The switching tools of tubing string bottom closed safe valve while upwardly through safety valve,It can realize summary responses,Ensure job safety.
Description
Technical field
It the utility model is related to oil/gas well downhole tool technical field, more particularly to a kind of oil/gas well casing safety valve.
Background technology
Existing deadweight safety valve there are following shortcoming：1st, need liquid controling pipe line and pass through well head, and need ground
Face is furnished with hydraulic control unit, i.e. well head control panel, carries out switch control, it is configured and maintenance cost is high；2nd, piston is necessarily provided with,
Switching manipulation is carried out by hydraulic pressure, after safety valve works in long-time, piston seal and liquid controling pipe line connector etc. hold
Easily leak, so as to cause instrument seal failure；3rd, when there is work string in well, exist due to ground hydraulic-control operation error
The shortcomings that causing valve clack of safety valve mistake to be closed so as to be damaged by work string movable in well；4th, when need carry out shutoff operation
When, after only waiting the work string in well to be proposed in well, at least tubing string bottom has been mentioned more than safe valve position at several meters
Shutoff operation could be carried out by the hydraulic control unit on ground, response time length, is unfavorable for job safety.
Utility model content
For above-mentioned technical problem, the utility model, which provides one kind, need not configure hydraulic control unit, save production cost
With the oil/gas well casing safety valve of maintenance cost and guarantee job safety.
In order to solve the above-mentioned technical problem, concrete scheme provided by the utility model is as follows：A kind of oil/gas well casing safety
Valve, successively including top connection, outer connecting cylinder and lower contact, it is equipped with valve seat, valve chamber successively between outer connecting cylinder and lower contact,
In the outer connecting cylinder successively be equipped with can in axial sliding sliding sleeve, interior connecting cylinder and open sleeve.
Preferably, the outer connecting cylinder inner wall is equipped with the first groove and the second groove, and the interior connecting cylinder is equipped with first
Keyway and the second keyway, are provided with the first key block in first keyway, the second key block are provided with second keyway；It is described
Sliding sleeve outer surface is equipped with the first sliding groove and the second sliding slot, and when sliding sleeve moves upwards, final second key block can be pushed up
Into the second groove of outer connecting cylinder；When sliding sleeve moves downward, final second key block is slipped to the first of sliding sleeve
In sliding slot, the first key block in first groove on top to outer connecting cylinder, can be played the role of locking sliding sleeve.
Preferably, the sliding sleeve outer surface is additionally provided with the resiliently-compressible boss of tool, boss and interior connecting cylinder platform
The resistance that shoulder grafting touches plays the role of preventing part from arbitrarily sliding.
Preferably, the valve seat and valve chamber are connected through a screw thread, and the junction of the valve seat and valve chamber is also equipped with tightening
Screw, improves the tightness between valve seat and valve chamber.
Preferably, flap and spring eye are equipped with the valve chamber, spring is installed in the spring eye, among the spring
Spring connecting rod is equipped with, the spring connecting rod is linked together by connecting rod and pin with valve chamber, and the flap passes through bar
Thick stick and pin link together with valve chamber.
Preferably, one end of the spring connecting rod is also equipped with thrust ring and closing piece, plays fixation.
Preferably, the valve chamber outer surface is also arranged with distance sleeve, the external and internal pressure of isolation safe valve.
Preferably, the first O-ring and the second O-ring are installed on the valve seat, play sealing and fastening effect.
Preferably, the lower contact is connected through a screw thread with valve chamber, and the junction of the lower contact and valve chamber is provided with tightly
Determine screw, improve the tightness between lower contact and valve chamber.
It is further preferred that the top connection is provided with the 3rd O-ring, the lower contact is provided with the 4th O-ring, plays
Sealing and fastening effect.
Compared with prior art, the beneficial effects of the utility model are：1st, oil gas casing provided by the utility model
Safety valve, carries out switching manipulation, only when the work in oil/gas well by the mating switch instrument for being connected to work string lowermost end
Tubing string proposes that switching tools are just immediately closed off upwardly through safety valve after safety valve out of well, pacifies so as to avoid traditional hydraulic control
Full valve causes valve clack of safety valve mistake to close and damaged by work string movable in well potential because of ground hydraulic-control operation error
Risk；2nd, hydraulic control unit and liquid controling pipe line need not be configured, need not also pass through well head, avoids potential leakage point, improves work
The reliability of tool, saves production cost and maintenance cost, improves work efficiency；3rd, managed when work string is proposed out of well
The switching tools of column bottom closed safe valve while upwardly through safety valve, can realize summary responses, ensure operation peace
Entirely.
Brief description of the drawings
Fig. 1 is flap open mode setting of casing safety valve top half structure connection diagram；
Fig. 2 is flap open mode setting of casing safety valve the latter half structure connection diagram；
Fig. 3 is Fig. 2 partial structurtes enlarged drawings；
Fig. 4 is flap closed mode setting of casing safety valve top half structure connection diagram；
Fig. 5 is flap closed mode setting of casing safety valve the latter half structure connection diagram；
Fig. 6 is Fig. 5 partial structurtes enlarged drawings；
Fig. 7 is the profile of sliding sleeve；
Fig. 8 is the structure diagram of sliding sleeve；
Fig. 9 is the utility model embodiment switching tools structure diagram；
Figure 10 is to open flap schematic diagram by switching tools；
Figure 11 is to close flap schematic diagram by switching tools；
Wherein, 1 is top connection；2 be lower contact；3 be outer connecting cylinder；31 be the first groove；32 be the second groove；4 be valve
Seat；5 be valve chamber；51 be flap；52 be spring；53 be spring connecting rod；54 be connecting rod；6 be sliding sleeve；61 slide for first
Groove；62 be the second sliding slot；63 be boss；7 be interior connecting cylinder；8 be unlatching sleeve；9 be the first key block；10 be the second key block；11
For holding screw；12 be bar thick stick；13 be pin；14 be distance sleeve；15 be the first O-ring；16 be the second O-ring；17 be the 3rd O
Type circle；18 be the 4th O-ring；19 be connecting cylinder；20 be upper binding head；21 be lower union joint；22 be locator convex block.
Embodiment
In order to make those skilled in the art be better understood from the technical solution of the utility model, below in conjunction with the accompanying drawings to this
The technical solution of utility model is further elaborated.
As shown in Fig. 1 ~ 3, a kind of oil/gas well casing safety valve, successively including top connection, outer connecting cylinder and lower contact, outside
Valve seat, valve chamber are equipped between connecting cylinder and lower contact successively, be equipped with successively in the outer connecting cylinder to slide in axial sliding
Sleeve, interior connecting cylinder and unlatching sleeve.
Outer connecting cylinder inner wall is equipped with the first groove and the second groove, and the interior connecting cylinder is equipped with the first keyway and the second key
Groove, is provided with the first key block in first keyway, the second key block is provided with second keyway；The sliding sleeve appearance
Face is equipped with the first sliding groove and the second sliding slot, and when sliding sleeve moves upwards, final second key block can arrive outer connecting cylinder by top
In second groove；When sliding sleeve moves downward, final second key block is slipped in the first sliding groove of sliding sleeve, the first key
Block in first groove on top to outer connecting cylinder, can be played the role of locking sliding sleeve.
Such as Fig. 7 and Fig. 8, the sliding sleeve outer surface of the present embodiment is additionally provided with the resiliently-compressible boss of tool, by convex
The resistance and the second key block and outer company that the resistance of platform and interior connecting cylinder shoulder, the first key block are contacted with outer the first groove of connecting cylinder
The resistance of the second groove of connect cylinder contact, when sliding sleeve moves to relevant position with opening sleeve, in no switching tools
It will be lockable under effect, and avoid component from arbitrarily sliding and push flap open by mistake or lose to the support of flap and close flap, improved
Functional reliability.
Flap and spring eye are equipped with valve chamber, spring is installed in the spring eye, spring is equipped among the spring
Connecting rod, the spring connecting rod are linked together by connecting rod and pin with valve chamber, and flap is connected by bar thick stick and pin with valve chamber
It is connected together, the spring of the present embodiment uses high performance material manufacture, ensures the flap under closed mode using for a long time
After will not be automatically opened up because of spring failure, reduce potential risk, and by using spring, spring connecting rod and connecting rod with
Required power when the connection structure of pin is to provide flap closing, reliability is high, and easily installation.
In order to improve the being completely embedded property between the stability in use of the oil/gas well casing safety valve and each component, this implementation
The valve seat and valve chamber of example are connected through a screw thread, and holding screw is also equipped with its junction, are improved between valve seat and valve chamber
Tightness；One end of spring connecting rod is also equipped with thrust ring and closing piece, plays fixation, is less prone to and comes off；Outside valve chamber
Surface is also arranged with distance sleeve；Lower contact is connected through a screw thread with valve chamber, its junction is provided with holding screw, is connect under raising
Tightness between head and valve chamber；First O-ring and the second O-ring are installed on valve seat, top connection is provided with the 3rd O-ring,
Lower contact is provided with the 4th O-ring, improves leakproofness and compactness.
The present embodiment is in specific implementation process, the oil/gas well casing safety valve（Hereinafter referred to as safety valve）Connect with casing
Connect, transfer to projected depth, flap is open mode at this time, and work string is equipped among safety valve, and work string bottom connects
Switching tools are connect, when needing closed safe valve, work string is above carried, drives switching tools to move upwards, as shown in figure 9, this
Switching tools used in embodiment include connecting cylinder and the upper binding head and lower union joint that are connected respectively with connecting cylinder, the company
Connect cylinder outer surface is equipped with the locator convex block coordinated with sliding sleeve section, and sliding sleeve and unlatching are driven by locator convex block
Sleeve moves upwardly together, and support of the flap due to being not turned on sleeve, under spring action, flap is closed, and continues
Work string is above carried, it is fixed when the raised upper end inclined-plane of the locator convex block of switching tools arrives to the shoulder of safety valve top connection
Position device convex block is compressed, and switching tools are separated with safety valve, and continuation upper lifting pipe post, can take out switching tools, and sliding sleeve
Under the drag effect that boss is contacted with the resistance of interior connecting cylinder shoulder and the second key block with outer the second groove of connecting cylinder, it is locked
In fixed position, flap can be constantly in closed mode, as shown in Fig. 4 ~ 6, Figure 11.
When needing to be again turned on flap, by work string tripping in switching tools, the locator convex block of switching tools with
Safety valve sliding sleeve section coordinates, and drives sliding sleeve and opens sleeve and moves downwardly together, the open-top flap of switching tools, bullet
Spring is compressed, and flap is opened, and continues to transfer tubing string, in the raised lower end inclined-plane of the locator convex block of switching tools arrives to
During the shoulder of connecting cylinder, locator convex block is compressed, and switching tools are separated with safety valve, is continued to transfer work string, is switched work
Tool is through safety valve, and sliding sleeve is in boss and the resistance of interior connecting cylinder shoulder and the first key block and outer the first groove of connecting cylinder
Under the drag effect of contact, fixed position is locked in, housing supports is opened and flap, flap can be constantly in open shape
State, prepares for ensuing work, as shown in Fig. 1 ~ 3, Figure 10.
Oil/gas well casing safety valve provided by the utility model, is connected with casing, is that one kind of oil/gas well is met an urgent need safety
Device, when after the completion of underground work or when there is unexpected security incident, it is necessary to which above carrying lowermost end is connected with mechanical switch instrument
Work string, can be with closed safe valve, so as to avoid the generation of potential risks or accident.
Finally, it should be noted that above example is only illustrating the technical solution of the utility model rather than to this reality
With the limitation of novel protected scope, any modification made where within the spirit and principles of the present invention, equivalent substitution and
Improve etc., it should be included within the scope of protection of this utility model.
Claims (10)
- A kind of 1. oil/gas well casing safety valve, successively including top connection（1）, outer connecting cylinder（3）And lower contact（2）, its feature exists In：In outer connecting cylinder（3）And lower contact（2）Between be equipped with valve seat successively（4）, valve chamber（5）, the outer connecting cylinder（3）Inside successively Equipped with can sliding sleeve in axial sliding（6）, interior connecting cylinder（7）With unlatching sleeve（8）.
- 2. oil/gas well casing safety valve according to claim 1, it is characterised in that：The outer connecting cylinder（3）Inner wall is equipped with First groove（31）With the second groove（32）, the interior connecting cylinder（7）It is equipped with the first keyway and the second keyway, first key First key block is installed in groove（9）, the second key block is installed in second keyway（10）；The sliding sleeve（6）Outer surface Equipped with the first sliding groove（61）With the second sliding slot（62）.
- 3. oil/gas well casing safety valve according to claim 2, it is characterised in that：The sliding sleeve（6）Outer surface is also Equipped with the resiliently-compressible boss of tool（63）.
- 4. oil/gas well casing safety valve according to claim 1, it is characterised in that：The valve seat（4）And valve chamber（5）Pass through It is threadedly coupled, the valve seat（4）And valve chamber（5）Junction be also equipped with holding screw（11）.
- 5. oil/gas well casing safety valve according to claim 1, it is characterised in that：The valve chamber（5）It is interior to be equipped with flap （51）And spring eye, spring is installed in the spring eye（52）, the spring（52）Centre is equipped with spring connecting rod（53）, The spring connecting rod（53）Pass through connecting rod（54）And pin（13）With valve chamber（5）Link together, the flap（51）Pass through Bar thick stick（12）And pin（13）With valve chamber（5）Link together.
- 6. oil/gas well casing safety valve according to claim 5, it is characterised in that：The spring connecting rod（53）One end It is also equipped with thrust ring and closing piece.
- 7. oil/gas well casing safety valve according to claim 1, it is characterised in that：The valve chamber（5）Outer surface is also arranged There is distance sleeve（14）.
- 8. oil/gas well casing safety valve according to claim 1, it is characterised in that：The valve seat（4）On the first O is installed Type circle（15）With the second O-ring（16）.
- 9. oil/gas well casing safety valve according to claim 1, it is characterised in that：The lower contact（2）With valve chamber（5）It is logical Cross threaded connection, the lower contact（2）With valve chamber（5）Junction holding screw is installed（11）.
- 10. according to claim 1 ~ 9 any one of them oil/gas well casing safety valve, it is characterised in that：The top connection（1）Peace Equipped with the 3rd O-ring（17）, the lower contact（2）4th O-ring is installed（18）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427362.4U CN207296965U (en) | 2017-10-31 | 2017-10-31 | A kind of oil/gas well casing safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427362.4U CN207296965U (en) | 2017-10-31 | 2017-10-31 | A kind of oil/gas well casing safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207296965U true CN207296965U (en) | 2018-05-01 |
Family
ID=62275101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721427362.4U Active CN207296965U (en) | 2017-10-31 | 2017-10-31 | A kind of oil/gas well casing safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207296965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502587A (en) * | 2020-04-15 | 2020-08-07 | 中国海洋石油集团有限公司 | Remotely opened stratum isolation tool for deep well |
| CN112282697A (en) * | 2020-11-19 | 2021-01-29 | 百勤能源科技（惠州）有限公司 | Downhole safety valve |
-
2017
- 2017-10-31 CN CN201721427362.4U patent/CN207296965U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502587A (en) * | 2020-04-15 | 2020-08-07 | 中国海洋石油集团有限公司 | Remotely opened stratum isolation tool for deep well |
| CN111502587B (en) * | 2020-04-15 | 2021-12-17 | 中国海洋石油集团有限公司 | Remotely opened stratum isolation tool for deep well |
| CN112282697A (en) * | 2020-11-19 | 2021-01-29 | 百勤能源科技（惠州）有限公司 | Downhole safety valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8316946B2 (en) | Subsea completion with a wellhead annulus access adapter | |
| CN206693997U (en) | A kind of oil field is every excavating technology tubing string | |
| CN101929318B (en) | Stage cementing device | |
| CN207296965U (en) | A kind of oil/gas well casing safety valve | |
| CN103883275A (en) | Novel energy-saving environment-friendly gas injection wellhead device | |
| CN108252675B (en) | Multifunctional intelligent oil production wellhead | |
| CN103790542B (en) | A kind of high temperature is with pressure to put test coiled tubing suspension sealing device and using method | |
| CN103104217A (en) | Drilling following cable underground hydraulic control sleeving valve | |
| CN106761577A (en) | A kind of oil field is every excavating technology tubing string | |
| CN103452524B (en) | Water injection well with can electric well flushing packer and can electric well flushing insert sealing | |
| CN108343396B (en) | Remote pressure control self-sealing type underground differential pressure sliding sleeve | |
| CN203742547U (en) | Novel energy-saving environment-friendly gas-injection well head device | |
| CN203939477U (en) | A kind of formation testing and completion practice integrated pipe column | |
| CN101839117B (en) | Annulus safety valve | |
| CN201687435U (en) | Annular relief valve | |
| CN210564446U (en) | Gas injection wellhead device with safety valve and control system | |
| CN110185407B (en) | Gas injection wellhead device with safety valve and control system | |
| CN104790907A (en) | Tubing head blocking isolating valve for fracture wellhead device | |
| CN105221107A (en) | Differential opening valve | |
| CN202832484U (en) | Well mouth pressure testing device | |
| CN204984356U (en) | Presetting system is ooff valve in pit | |
| CN208546156U (en) | A kind of hydraulic control sliding sleeve | |
| CN208184697U (en) | A kind of high-pressure packing sand-control construction wellhead assembly | |
| CN102953706A (en) | Washable well packer for realizing underground secondary setting | |
| CN203239265U (en) | Intelligent well closing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210303 Address after: 516229 No.1 Factory building, No.10 Yuanhui Road, Chenjiang street, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee after: BAIQIN ENERGY TECHNOLOGY (HUIZHOU) Co.,Ltd. Address before: 516229 No.1 Factory building, No.10 Yuanhui Road, Chenjiang street, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee before: BAIQIN ENERGY TECHNOLOGY (HUIZHOU) Co.,Ltd. Patentee before: PETRO-KING OILFIELD TECHNOLOGY Ltd. |