CN204002735U - A kind of Novel down-hole restriction choke - Google Patents
A kind of Novel down-hole restriction choke Download PDFInfo
- Publication number
- CN204002735U CN204002735U CN201420428517.6U CN201420428517U CN204002735U CN 204002735 U CN204002735 U CN 204002735U CN 201420428517 U CN201420428517 U CN 201420428517U CN 204002735 U CN204002735 U CN 204002735U
- Authority
- CN
- China
- Prior art keywords
- lock dog
- described lock
- axle
- linkage section
- dog body
- 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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Abstract
The utility model discloses a kind of Novel down-hole restriction choke, comprise lock dog axle, lock nut, baffle ring, protective jacket, spring leaf, lock dog, lock dog body, linkage section, spring, inner canister, V-shaped seal ring, seal receptacle, valve seat, shear pin, valve, pressure cap, sand cap, it is characterized in that, described lock dog is put into the lock dog groove of described lock dog body, described spring leaf is put into described protective jacket and is passed described lock dog body, described spring leaf inserts in described lock dog, described lock nut passes described lock dog axle and inserts in lock dog body, put into baffle ring then described lock nut and the screwed connection of described lock dog body, described spring penetrates described inner canister and integral body penetrates described linkage section, described linkage section and the screwed connection of described lock dog body.The utility model will be matched in clearance between lock dog axle and lock dog body, and lock dog shaft end telescopic claw expandable, and instrument can be realized quiet pulling force unfreezing by steel wire operation, makes instrument be easy to salvage; This instrument is thrown in without special-purpose delivery tool, and just can implementation tool setting with fishing tool.
Description
Technical field
The utility model relates to a kind of Novel down-hole restriction choke, particularly relates to a kind of downhole tool that is applicable in natural gas well production, high-pressure natural gas be carried out reducing pressure by regulating flow.
Background technology
In natural gas extraction, for step-down, throttling, limited production, usually at Wellbore of Gas Wells, underground throttle device is installed, underground throttle device is divided into again slip-type underground throttle and pre-set type underground throttling device with setting mode difference.What revive at present Sulige gas field extensive use is slip-type underground throttle, by large-area applying, shows, this restriction choke is difficult to be salvaged, and easily causes down-hole accident.Pre-set type underground throttling device cartridge deflection is little, sealing reliability good, and the life-span is long, once and cartridge be located in short circuit and depart from, its external diameter is just less than pit shaft latus rectum, while carrying in salvaging almost without frictional resistance, so that easily salvage.
A kind of new structure pre-set type underground throttling device and the delivery tool (patent No.: ZL200920246232.X), due to the existence of snap ring, steel wire operation cannot be realized quiet pulling force unfreezing.
Therefore, prior art needs to be improved.
Utility model content
The utility model, in order to solve the deficiencies in the prior art, provides a kind of Novel down-hole restriction choke, solves this class potential safety hazard.
For solving the problems of the technologies described above, a kind of Novel down-hole restriction choke that the utility model embodiment provides, adopts following technical scheme:
A kind of Novel down-hole restriction choke, comprise lock dog axle, lock nut, baffle ring, protective jacket, spring leaf, lock dog, lock dog body, linkage section, spring, inner canister, V-shaped seal ring, seal receptacle, valve seat, shear pin, valve, pressure cap, sand cap, it is characterized in that, described lock dog is put into the lock dog groove of described lock dog body, described spring leaf is put into described protective jacket and is passed described lock dog body, described spring leaf inserts in described lock dog, described lock nut passes described lock dog axle and inserts in lock dog body, put into baffle ring then described lock nut and the screwed connection of described lock dog body, described spring penetrates described inner canister and integral body penetrates described linkage section, described linkage section and the screwed connection of described lock dog body.
Particularly, described V-shaped seal ring penetrate described seal receptacle and with described inner canister screwed connection.
Particularly, described valve is put into described valve seat chamber and with pressure cap and the screwed connection of described valve seat, in sand cap and the screwed connection of valve seat whole insertion seal receptacle, with shear pin, is fixed.
A kind of Novel down-hole restriction choke that the utility model provides, is matched in clearance between lock dog axle and lock dog body, and lock dog shaft end telescopic claw expandable, and instrument can be realized quiet pulling force unfreezing by steel wire operation, makes instrument be easy to salvage; This instrument is thrown in without special-purpose delivery tool, and just can implementation tool setting with fishing tool.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Novel down-hole restriction choke described in the utility model embodiment.
Reference numeral: lock dog axle 1, lock nut 2, baffle ring 3, protective jacket 4, spring leaf 5, lock dog 6, lock dog body 7, linkage section 8, spring 9, inner canister 10, V-shaped seal ring 11, seal receptacle 12, valve seat 13, shear pin 14, valve 15, pressure cap 16, sand cap 17.
The specific embodiment
Novel down-hole restriction choke the utility model embodiment being offered below in conjunction with accompanying drawing is described in detail.
As shown in Figure 1, a kind of Novel down-hole restriction choke that the utility model embodiment provides, lock dog 6 is put into the lock dog groove of lock dog body 7, and spring leaf 5 is put into protective jacket 4 and is passed lock dog body 7, and spring leaf 5 inserts in lock dogs 6; Lock nut 2 passes lock dog axle 1 and inserts in lock dog body 7, puts into baffle ring 3 then lock nut 2 and 7 screwed connections of lock dog body; Spring 9 penetrates inner canister 10 and integral body penetrates linkage section 8, linkage section 8 and 7 screwed connections of lock dog body; V-shaped seal ring 11 penetrate seal receptacle 12 and with inner canister 10 screwed connections; Valve 15 puts into valve seat 13 chambeies and with pressure cap 16 and 13 screwed connections of valve seat, sand cap 17 inserts in seal receptacle 12 fixing with shear pin 14 with 13 screwed connections of valve seat integral body.
The utility model completes launch process by steel wire operation:
1, throw in
Before throwing in, with fishing tool, insert in the lock dog axle 1 of pre-set type underground throttling device.During input, with steel wire tool string, connect fishing tool and render to the seating nipple of assigned address, due to the existence of the limited step of lock dog body 7, cause the instrument cannot be descending, downwards jarring tool string.Lock dog axle 1 moves down with respect to lock dog body 7, and due to the effect of lock dog axle 1 step, lock dog 6 is pushed in seating nipple groove by lock dog axle 1; Meanwhile, due to lock dog axle 1
End telescopic claw radial contraction stretch into another telescopic claw groove in inner canister 10 under the effect of axial force; And due to the release of spring 9, cause inner canister 10 and V-shaped seal ring 11, seal receptacle 12 to seal with seating nipple sealing surface with respect to moving on linkage section 8 and compressing V-shaped seal ring 11.When lock dog axle 1 fully inserts lock dog body 7, fishing tool pin is cut off with pre-set type underground throttling device and is thrown off, and completes input.Because lock dog axle 1 end telescopic claw stretches in the telescopic claw groove in inner canister 10, so lock dog axle 1 can be when opening well and making production moved on air-flow.
2, salvage
With steel wire, connect fishing tool and be lowered into presetting system throttle positions, on in the time of in Special fishing tool stretches into lock dog axle 1 chamber, carry, now lock dog axle 1 is with respect to moving on lock dog body 7, because spring leaf 5 compression lock dogs 6 make it get back to lock dog axle 1 bottleneck, lock dog 6 place's external diameters are less than seating nipple internal diameter, lock dog body 7, with moving on lock dog axle 1, is salvaged successfully.Due to the effect of baffle ring 3, while above carrying, lock dog body 7 can be not separated with lock dog axle 1.
2, destroy valve and sand cap
When valve 15 and sand cap 17 sand plug, to hit instrument under steel wire connection special use, be lowered into presetting system throttle positions, and hit under stretching in its chamber, shear pin 14 is cut off, and valve 15, pressure cap 16 just can fall in well together with valve seat 13 and sand cap 17.
A kind of Novel down-hole restriction choke that the utility model provides, is matched in clearance between lock dog axle and lock dog body, and lock dog shaft end telescopic claw expandable, and instrument can be realized quiet pulling force unfreezing by steel wire operation, makes instrument be easy to salvage; This instrument is thrown in without special-purpose delivery tool, and just can implementation tool setting with fishing tool.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by the described protection domain with claim.
Claims (3)
1. a Novel down-hole restriction choke, comprise lock dog axle, lock nut, baffle ring, protective jacket, spring leaf, lock dog, lock dog body, linkage section, spring, inner canister, V-shaped seal ring, seal receptacle, valve seat, shear pin, valve, pressure cap, sand cap, it is characterized in that, described lock dog is put into the lock dog groove of described lock dog body, described spring leaf is put into described protective jacket and is passed described lock dog body, described spring leaf inserts in described lock dog, described lock nut passes described lock dog axle and inserts in lock dog body, put into baffle ring then described lock nut and the screwed connection of described lock dog body, described spring penetrates described inner canister and integral body penetrates described linkage section, described linkage section and the screwed connection of described lock dog body.
2. Novel down-hole restriction choke according to claim 1, is characterized in that, described V-shaped seal ring penetrate described seal receptacle and with described inner canister screwed connection.
3. Novel down-hole restriction choke according to claim 1, is characterized in that, described valve puts into described valve seat chamber and with pressure cap and the screwed connection of described valve seat, sand cap and the screwed connection of valve seat whole insertion in seal receptacle are fixed with shear pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428517.6U CN204002735U (en) | 2014-08-01 | 2014-08-01 | A kind of Novel down-hole restriction choke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428517.6U CN204002735U (en) | 2014-08-01 | 2014-08-01 | A kind of Novel down-hole restriction choke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204002735U true CN204002735U (en) | 2014-12-10 |
Family
ID=52042755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420428517.6U Expired - Fee Related CN204002735U (en) | 2014-08-01 | 2014-08-01 | A kind of Novel down-hole restriction choke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204002735U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888626A (en) * | 2016-04-19 | 2016-08-24 | 陕西汇丰悦石油科技开发有限公司 | Novel pre-set type underground flow controller |
| CN106014354A (en) * | 2016-06-21 | 2016-10-12 | 陕西汇丰悦石油科技开发有限公司 | Cava-free automatic liquid drainage throttle device |
| CN111042778A (en) * | 2019-11-26 | 2020-04-21 | 宝鸡瑞林石油机电设备有限责任公司 | Multiple-time seat-seal preset type throttler |
| CN111691862A (en) * | 2020-07-08 | 2020-09-22 | 中国石油天然气股份有限公司 | Multifunctional underground throttle free of rope throwing and fishing |
| CN114482942A (en) * | 2022-02-04 | 2022-05-13 | 四川大学 | High-pressure gas well side-through gas storage type layered depressurization device |
-
2014
- 2014-08-01 CN CN201420428517.6U patent/CN204002735U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888626A (en) * | 2016-04-19 | 2016-08-24 | 陕西汇丰悦石油科技开发有限公司 | Novel pre-set type underground flow controller |
| CN106014354A (en) * | 2016-06-21 | 2016-10-12 | 陕西汇丰悦石油科技开发有限公司 | Cava-free automatic liquid drainage throttle device |
| CN111042778A (en) * | 2019-11-26 | 2020-04-21 | 宝鸡瑞林石油机电设备有限责任公司 | Multiple-time seat-seal preset type throttler |
| CN111691862A (en) * | 2020-07-08 | 2020-09-22 | 中国石油天然气股份有限公司 | Multifunctional underground throttle free of rope throwing and fishing |
| CN114482942A (en) * | 2022-02-04 | 2022-05-13 | 四川大学 | High-pressure gas well side-through gas storage type layered depressurization device |
| CN114482942B (en) * | 2022-02-04 | 2022-09-27 | 四川大学 | High-pressure gas well side-through gas storage type layered pressure reduction device |
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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: 20141210 Termination date: 20170801 |