CN204877356U - Slips formula in pit flow controller with novel gas lift fishing tool - Google Patents
Slips formula in pit flow controller with novel gas lift fishing tool Download PDFInfo
- Publication number
- CN204877356U CN204877356U CN201520635867.4U CN201520635867U CN204877356U CN 204877356 U CN204877356 U CN 204877356U CN 201520635867 U CN201520635867 U CN 201520635867U CN 204877356 U CN204877356 U CN 204877356U
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- China
- Prior art keywords
- spring
- pin
- fishing tool
- gaslift
- overcoat
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Abstract
The utility model discloses a slips formula in pit flow controller with novel gas lift fishing tool, a serial communication port, including puting in ware, pin no. 1, connector, dabber, fishing neck, spring no. 1, overcoat, endotheca, spring no. 2, pin no. 2, claw cover, spring no. 3, slider, bailer grab, the connector with dabber threaded connection to fix with input utensils pin no. 1, spring no. 1 passes the dabber inserts the inner chamber of fishing neck, the fishing neck with overcoat threaded connection, the overcoat with the claw cover is fixed through pin no. 2, the endotheca passes claw cover, spring no. 2, spring no. 3 and with overcoat threaded connection, the bailer grab inserts the claw cover is spacing with the slider. The utility model has the advantages of: the flow controller in the pit that relies on the gas lift to go upward, in case meet in the pit shaft position and hinder, gas lift fishing tool can slip out of the hand with flow controller in the pit, can not leave over the well in, avoid increasing and handle the fish degree of difficulty.
Description
Technical field
The utility model relates to the novel gaslift fishing tool of a kind of slip-type underground throttle.
Background technology
In order to step-down, limited production, energy-conservation in natural gas extraction, adopt and install underground throttle device in gas well down-hole, the underground throttle device of current extensive use is slip-type underground throttle.This device enters under relying on steel wire, and slips is located, and packing element seals, and valve is joined product and realized pit shaft natural gas reducing pressure by regulating flow and prevent the formation of hydrate, usually adopts steel wire operation to complete during salvaging.
At the scene in application, gas well output or gas well liquid loading later stage to being regulated to give full play to gas well deliverability for meeting Production requirement, restriction choke need be salvaged from pit shaft.But in gas well liquid loading process, along with restriction choke increases service time, cartridge generation permanent deformation, causes packing element and wall friction power too large, and cause upper lift power in salvaging process large, steel wire operation easily down-hole accident occurs.For the situation of cartridge permanent deformation, at present by plunger lift drainage gas recovery principle, the gaslift fishing tool of use relies on gas well self-energy to impel restriction choke up.A kind of slip-type underground throttle anti-fall gaslift fishing tool (patent No.: ZL201220380956.5) and a kind of Slips formula underground throttle device gaslift fishing tool (patent No.: ZL201220366069.2) all cannot be slipped out of the hand with underground throttle device in down-hole, once underground throttle device gaslift is salvaged unsuccessfully, gaslift fishing tool will be left in well.
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 slip-type underground throttle novel gaslift fishing tool, and new tool is salvaged in a kind of gaslift with function of slipping out of the hand.
For solving the problems of the technologies described above, the novel gaslift fishing tool of a kind of slip-type underground throttle that the utility model embodiment provides, adopts following technical scheme:
The novel gaslift fishing tool of a kind of slip-type underground throttle, it is characterized in that, comprise dispenser, pin one, connector, mandrel, fishing neck, spring one, overcoat, inner sleeve, spring two, pin two, pawl cover, spring three, slide block, bailer grab, described connector and described mandrel screwed connection, and fix with dispenser pin one, described spring one passes described mandrel and inserts the inner chamber of described fishing neck, described fishing neck and described overcoat screwed connection, described overcoat and described pawl cover are fixed by pin two, described inner sleeve is through described pawl cover, spring two, spring three and with described overcoat screwed connection, described bailer grab inserts described pawl and overlaps and use slide block spacing.
Particularly, the shearing force of described pin one is less than the shearing force of described pin two.
Particularly, the elastic force of described spring two is greater than spring three.
Particularly, described bailer grab has elasticity and can bounce back to center under the effect of radial load.
The utility model has the advantage of: rely on the underground throttle device that gaslift is up, once be hampered in pit shaft position, gaslift fishing tool can be slipped out of the hand with underground throttle device, can not leave in well, avoid increasing process fish difficulty.
Accompanying drawing explanation
Fig. 1 is the structural representation of novel gaslift fishing tool of a kind of slip-type underground throttle described in the utility model embodiment.
Reference numeral: 1, dispenser, 2, pin one, 3, connector, 4, mandrel, 5, fishing neck, 6, spring one, 7, overcoat, 8, inner sleeve, 9, spring two, 10, pin two, 11, pawl cover, 12, spring three, 13, slide block, 14, bailer grab.
Detailed description of the invention
Below in conjunction with accompanying drawing, the slip-type underground throttle that the utility model embodiment is supplied to is described in detail with novel gaslift fishing tool.
As shown in Figure 1, the novel gaslift fishing tool of a kind of slip-type underground throttle that the utility model embodiment provides, it is characterized in that, comprise dispenser 1, pin 1, connector 3, mandrel 4, fishing neck 5, spring 1, overcoat 7, inner sleeve 8, spring 29, pin 2 10, pawl cover 11, spring 3 12, slide block 13, bailer grab 14, described connector 3 and the screwed connection of described mandrel 4, and fix with dispenser 1 pin 1, described spring 1 passes described mandrel 4 and inserts the inner chamber of described fishing neck 5, described fishing neck 5 and the screwed connection of described overcoat 7, described overcoat 7 and described pawl overlap 11 to be fixed by pin 2 10, described inner sleeve 8 is through described pawl cover 11, spring 29, spring 3 12 and with the screwed connection of described overcoat 7, described bailer grab 14 inserts described pawl cover 11 and uses slide block 13 spacing.
Particularly, the shearing force of described pin 1 is less than the shearing force of described pin 2 10.
Particularly, the elastic force of described spring 29 is greater than spring 3 12.
Particularly, described bailer grab 14 has elasticity and can bounce back to center under the effect of radial load.
Described fishing neck 5 can make conventional restriction choke fishing socket capture.
Need of work of the present utility model is completed by five steps: 1, unfreezing restriction choke; 2, the utility model fishing tool is dropped into; 3, opening well and making production; 4, salvaging is completed; 5, gaslift fishing tool is slipped out of the hand.
(1) unfreezing restriction choke
Before salvaging restriction choke, first carry out pass well operations, close and produce valve, make gas well tubing pressure and casing pressure in a basic balance, then by traditional steel wire operation, fastening means string rope socket+weighted lever+bumper jar+blind hammer, makes restriction choke unfreezing (slips and supporter are thrown off).
(2) the utility model fishing tool is dropped into
First gaslift fishing tool is assembled according to Fig. 1, by traditional steel wire operation, fastening means string: rope socket+weighted lever+bumper jar+gaslift fishing tool.Slowly transfer steel wire, when gaslift fishing tool reaches steel wire operation car instruction steel wire pulling force decline above restriction choke, stop transferring operation, slowly, carry steel wire, if upper lifting force is greater than the suspending weight of this position, illustrate that gaslift fishing tool bailer grab 14 has captured restriction choke fishing neck.Carry steel wire now, when running into tubing coupling position, pulling force can rise, and when pulling force is close to safe pulling force, takes into account that the operation of fishing tool shear pin is lifted in promoting the circulation of qi.Slow releasing steel wire, makes bumper jar close, and after transferring a segment distance, carry steel wire fast, pin 1 is cut off in bumper jar jarring, and dispenser 1 trips out well head with tool string, and other parts of gaslift fishing tool are stayed above restriction choke.
When gaslift fishing tool pin 2 is cut off, bailer grab 14 catches restriction choke fishing neck, now gaslift fishing tool connector 3 and mandrel 4 move down under the effect of spring 1 elastic force, mandrel 4 lower end is against on restriction choke body, under the effect of spring 1 elastic force, restriction choke fishing neck and slips have been dragged by gaslift fishing tool, and restriction choke is in eternal unfreezing state.Packing element due to restriction choke bears High Pressure Difference for a long time and is in deformation state, can be close to oil pipe by frictionally, causes restriction choke and gaslift fishing tool can not be descending.
(3) opening well and making production
After wellhead blowout preventer and catcher are installed, guarantee that well head test valve and main valve are opened completely, now slowly open and produce valve (or slowly opening needle-valve) release.Along with production valve opening, tubing pressure slowly declines, and because restriction choke packing element permanent deformation still can play sealing function, so restriction choke is upper and lower occur pressure reduction, restriction choke is subject to lifting force.
(4) salvaging is completed
Along with the continuous unlatching of producing valve, gas well is slowly produced, restriction choke is up together with gaslift fishing tool under upper and lower differential pressure action, after restriction choke and gaslift fishing tool enter lubricator, close test valve, after blowout hookup pressure release, unload blowout hookup and catcher, complete restriction choke salvage.
(5) gaslift fishing tool is slipped out of the hand
If produce the valve opening long period, tubing pressure has been down to very low, and restriction choke and gaslift fishing tool do not enter blowout hookup yet, then may be that restriction choke is hampered in the up process of oil pipe.Now, close and produce valve and test valve, unload wellhead blowout preventer and catcher, install traditional steel wire operation restriction choke fishing tool, test captures the fishing neck 5 of fishing tool of the present invention, makes restriction choke pass through stuck point by steel wire operation.If it is not very large for now going up lift power, directly can completes restriction choke by steel wire operation and salvage.If upper lift power is large, then hit tool string on passing through and cut off pin 2 10, pawl cover 11 is descending relative to bailer grab 14 under the effect of spring 29, makes bailer grab 14 internal diameter increase and throw off with restriction choke fishing neck.Trip out traditional fishing tool and gaslift fishing tool of the present invention, complete gaslift fishing tool and slip out of the hand.
The utility model has the advantage of: rely on the underground throttle device that gaslift is up, once be hampered in pit shaft position, gaslift fishing tool can be slipped out of the hand with underground throttle device, can not leave in well, avoid increasing process fish difficulty.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.
Claims (4)
1. the novel gaslift fishing tool of slip-type underground throttle, it is characterized in that, comprise dispenser, pin one, connector, mandrel, fishing neck, spring one, overcoat, inner sleeve, spring two, pin two, pawl cover, spring three, slide block, bailer grab, described connector and described mandrel screwed connection, and fix with dispenser pin one, described spring one passes described mandrel and inserts the inner chamber of described fishing neck, described fishing neck and described overcoat screwed connection, described overcoat and described pawl cover are fixed by pin two, described inner sleeve is through described pawl cover, spring two, spring three and with described overcoat screwed connection, described bailer grab inserts described pawl and overlaps and use slide block spacing.
2. the novel gaslift fishing tool of slip-type underground throttle according to claim 1, is characterized in that, the shearing force of described pin one is less than the shearing force of described pin two.
3. the novel gaslift fishing tool of slip-type underground throttle according to claim 1, is characterized in that, the elastic force of described spring two is greater than spring three.
4. the novel gaslift fishing tool of slip-type underground throttle according to claim 1, is characterized in that, described bailer grab has elasticity and can bounce back to center under the effect of radial load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520635867.4U CN204877356U (en) | 2015-08-24 | 2015-08-24 | Slips formula in pit flow controller with novel gas lift fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520635867.4U CN204877356U (en) | 2015-08-24 | 2015-08-24 | Slips formula in pit flow controller with novel gas lift fishing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204877356U true CN204877356U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520635867.4U Expired - Fee Related CN204877356U (en) | 2015-08-24 | 2015-08-24 | Slips formula in pit flow controller with novel gas lift fishing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204877356U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761521A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of mechanical throttle device fishing tool and its operating method |
| CN110439492A (en) * | 2018-05-03 | 2019-11-12 | 中国石油天然气股份有限公司 | Underground throttle device recyclable device and method |
-
2015
- 2015-08-24 CN CN201520635867.4U patent/CN204877356U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761521A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of mechanical throttle device fishing tool and its operating method |
| CN110439492A (en) * | 2018-05-03 | 2019-11-12 | 中国石油天然气股份有限公司 | Underground throttle device recyclable device and method |
| CN110439492B (en) * | 2018-05-03 | 2021-11-02 | 中国石油天然气股份有限公司 | Underground choke recycling device and method |
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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: 20151216 Termination date: 20170824 |