CN201110147Y - Fishing-out tool for exchanging gas-lift valve - Google Patents
Fishing-out tool for exchanging gas-lift valve Download PDFInfo
- Publication number
- CN201110147Y CN201110147Y CNU2007201739355U CN200720173935U CN201110147Y CN 201110147 Y CN201110147 Y CN 201110147Y CN U2007201739355 U CNU2007201739355 U CN U2007201739355U CN 200720173935 U CN200720173935 U CN 200720173935U CN 201110147 Y CN201110147 Y CN 201110147Y
- Authority
- CN
- China
- Prior art keywords
- core bar
- spring
- gas lift
- lift valve
- tool
- 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 relates to a bailed tool for changing a gas lift valve, which is applied in an oil field gas lift oil production oils to bail underground gas lift valves. The utility model is characterized the lower end of an upper joint is provided with an inner hole, and the lower end of the upper joint is connected with a bailing body screw threads. A core bar is fixed in the copper pin in the central hole of the bailing body, the upper portion of the core bar is sleeved with a spring, and the spring is fixed by a screw cap on the upper end of the core bar. A spring is sleeved on the core bar on the lower portion of the copper pin, and the lower portion of the spring is provided with a ring-shaped spring squash plate. The outer wall of the bailing body is suspended with three locking plates, and the lower ends of the locking plates are provided with inwards hooks. The inner surfaces of the locking plates are supported on the core bar. The lower end of the core bar is provided with a central hole. The bailed tool has the advantages that the bailed tool can be matched to use with steel wire casing and bailing tools such as bumper subs, deflectors and the like, which can firmly grab a bailing head of the gas lift valve. When abnormal condition happens, the bailed tool is downwards jarred to cut the copper pin, the gas lift valve and the locking plates are forced to separate, and release grip release can be achieved. The bailed tool has simple structure, which is safe and reliable, and is suitable for a still column jacket to change a gas lift valve, and can greatly reduce the production time which is occupied by gas lift well operation.
Description
Technical field
The utility model relates to oil recovery technique field, a kind of oil field, and particularly a kind of special-purpose fishing tool of the underground work of recovering the oil is supporting with steel wire operation instrument (weighted lever, bumper jar, whipstock etc.), is mainly used in the gas-lift production well and salvages the down-hole gas lift valve.
Background technology
Some oil fields utilize the gas-lift production technology to produce.In the gas-lift production process,, need to adjust the valve opening size of gas lift valve because the stratum feed flow changes; Or when fault such as the gas lift valve thorn is bad, thorn leakage takes place, all need to change the down-hole gas lift valve.If adopt from the down-hole and trip out tubing string replacing gas lift valve in the former well, not only increased operating cost, and prolonged duty cycle.And adopt the wire Launching and Bailing operation, and can under the fixed tubular column situation, change gas lift valve by wire Launching and Bailing, adjust the gas-lift well operating mode.
Also do not change the special tool of gas lift valve at present, can only take down-hole string is all tripped out, change gas lift valve by wire Launching and Bailing.
The utility model content
The purpose of this utility model is: a kind of instrument of pulling out that is used to change gas lift valve is provided, is used to change gas lift valve.This instrument can with the supporting use of wire Launching and Bailing power tool, the gas lift valve of holding that not only can be safe and reliable, and can be when the underground emergency situation occurring be taked the emergent measure of slipping out of the hand, and guarantees that construction safety is reliable.
The technical solution of the utility model is: be used to change the instrument of pulling out of gas lift valve, mainly be made up of top connection, nut, core bar, salvaging body, the collar, spring, spring leaf and locking plate.There is external screw thread on the top of top connection, can be connected with the salvaging running tool.It is characterized in that: there is centre bore the lower end of top connection, top connection lower end and salvaging body thread connection.In the centre bore of salvaging body, adopt the copper pin to be fixed with a core bar, the position on core bar top is in the centre bore of top connection, the top of core bar is with spring, there is nut on the top of core bar, and nut is fixed on spring and salvages the body top, and nut is used for the pretightning force of regulating spring.Be with spring on the core bar of copper pin bottom, spring is at the inner chamber of salvaging body, and the spring leaf of ring-type is arranged at the bottom of spring.Have rectangular opening on the outer wall of salvaging body, be hung with 3 locking plates on the rectangular opening, there is inside hook the lower end of locking plate.The locking plate inner surface leans against on the core bar.There is centre bore the lower end of core bar.
In order to prevent that the copper pin from withdrawing from automatically, on the outer wall of salvaging body, the collar is arranged, the two ends of collar position energy covering copper pin.
For when salvaging gas lift valve, the fishing head at gas lift valve top can enter smoothly, and there is inner conical surface described salvaging body lower end; There is inside inclined-plane the locking plate lower end; Core bar lower end centre bore has inner conical surface.
The beneficial effects of the utility model are: be used to change gas lift valve the instrument of pulling out can with the supporting uses of wire Launching and Bailing instrument such as bumper jar, whipstock, after putting in place under the tool string, deflecting enters gas lift valve valve bag, can be firm catch the gas lift valve fishing head.After unusual condition occurring, the copper pin is cut off in jarring downwards, and gas lift valve and locking plate break away from by force, can realize the release of slipping out of the hand.It is simple in structure, and is safe and reliable, is applicable to fixed tubular column replacing gas lift valve, can reduce the gas-lift well operation greatly and take the production time.
Description of drawings
Fig. 1 is that the instrument of pulling out that the utility model is used to change gas lift valve partly cuts open schematic diagram.
Among the figure, 1. top connection, 2. nut, 3. core bar, 4. spring, 5. salvage body, the 6. collar, 8. spring, 9. spring leaf, 10. locking plate.
The specific embodiment
Embodiment 1: consult Fig. 1.With an external diameter is that 30 millimeters the instrument of pulling out that is used to change gas lift valve is that example is illustrated,
In salvaging the centre bore of body 5, adopting horizontal copper pin 7 to be fixed with a upper end diameter is 14 millimeters core bar 3, and core bar 3 lower end centre bores have interior chamfering, and interior chamfering is 45 to spend.The position on core bar 3 tops is in the centre bore of top connection 1.The top of core bar 3 is with spring 4, and spring 4 is dextrorotation, number of total coils 7 circles, length of run 482mm.There is the nut 2 of M12 on the top of core bar 3, and nut 2 is fixed on spring 4 and salvages body 5 tops.Be with spring 8 on the core bar 3 of copper pin 7 bottoms, spring 8 is at the inner chamber of salvaging body 5, and the spring leaf 9 of ring-type is arranged at the bottom of spring 8.
The collar 6 that an annular is arranged on the outer wall of salvaging body 5, the two ends of the collar 6 positions energy covering copper pin 7 prevent that copper pin 7 from withdrawing from automatically.
Have 6 rectangular openings on the outer wall of salvaging body 5, be hung with 3 locking plates 10 on rectangular opening, there is inside hook the lower end of locking plate 10, and the gradient on inclined-plane, hook lower end is 30 degree.Locking plate 10 inner surfaces lean against on the core bar 3.There is centre bore the lower end of core bar 3.Salvaging body 5 lower ends has interior chamfering, and interior chamfering is 45 degree.
Under nature, salvage body 5 and hold locking plate 10 tightly, behind the deflecting that puts in place under the wire Launching and Bailing tool string, the instrument of pulling out contacts with the gas lift valve fishing head.To descending, top locking plate 10 compresses springs 8 on the gas lift valve fishing head under tool string deadweight effect, and locking plate 10 breaks away from salvaging bodies 5 and flicks.It is up that the gas lift valve fishing head continues, on carry tool string, locking plate 10 resets, locking plate 10 steps pin the fishing neck of fishing head simultaneously, finish the salvaging of gas lift valve.Carry steel wire at the uniform velocity slowly and can pull gas lift valve out ground.
If when gas lift valve down-hole stuck phenomenon occurring in the salvaging process, jarring downwards drives top connection 1 downward jarring nut 2, and nut 2 drive core bars 3 move downward and subtract disconnected copper pin 7, and the spring 4 that is in compressive state originally discharges and stretches, and promotion nut 2 and core bar 3 are up.Core bar 3 up backs drive the locking plate 10 up locking plates 10 that cause and break away from the locking mechanism of salvaging body 5, and the locking plate 10 up back gas lift valve fishing heads that open are slipped out of the hand.
Need the wire Launching and Bailing operation at the scene in the operation process, the summary operating process:
1, the tool string that will salvage gas lift valve connects with steel wire on the ground, and the order of tool string is: rope socket, weighted lever, bumper jar, knuckle, whipstock and pull instrument out.
2, transfer tool string, under whipstock to the following 5-10m of side-pocket mandrel.On carry steel wire and enter in the groove of fairlead of seating nipple upper end up to the guide pad of whipstock, meanwhile whipstock rotates, and makes the one side of fishing tool face the valve bag.
3, carry steel wire on, finish deflecting, the fishing head of the lower end aligned valve of fishing tool.
4, transfer steel wire, make the fishing head contact of the instrument of pulling out, when the pulling force that refers to restatement obviously reduces, just illustrate that fishing tool has touched the fishing head of valve with gas lift valve.Under tool string deadweight effect, the locking plate 10 of pulling instrument out opens, and blocks the fishing neck of fishing head.
5, the copper pin of gas lift valve is cut off in upwards jarring, discharges the lock neck, and valve is spun off from eccentric bag, on carry steel wire.In up process, as when other seating nipples, underspeed, slowly pass through.
Claims (5)
1, a kind of instrument of pulling out that is used to change gas lift valve, mainly by top connection (1), nut (2), core bar (3), spring (4), salvage body (5), the collar (6), copper pin (7), spring (8), spring leaf (9) and locking plate (10) are formed, there is external screw thread on the top of top connection (1), it is characterized in that: there is centre bore the lower end of top connection (1), top connection (1) lower end and salvaging body (5) thread connection, in the centre bore of salvaging body (5), adopt copper pin (7) to be fixed with a core bar (3), the position on core bar (3) top is in the centre bore of top connection (1), the top of core bar (3) is with spring (4), there is nut (2) on the top of core bar (3), nut (2) is fixed on spring (4) and salvages body (5) top, on the core bar (3) of copper pin (7) bottom, be with spring (8), spring (8) is at the inner chamber of salvaging body (5), the spring leaf (9) of ring-type is arranged at the bottom of spring (8), on the outer wall of salvaging body (5), have rectangular opening, be hung with 3 locking plates (10) on the rectangular opening, there is inside hook the lower end of locking plate (10), locking plate (10) inner surface leans against on the core bar (3), and there is centre bore the lower end of core bar (3).
2, a kind of instrument of pulling out that is used to change gas lift valve according to claim 1 is characterized in that: on the outer wall of salvaging body (5) collar (6) is arranged, the two ends of the collar (6) position energy covering copper pin (7).
3, a kind of instrument of pulling out that is used to change gas lift valve according to claim 1 and 2, it is characterized in that: there is interior chamfering described salvaging body (5) lower end, and interior chamfering is 45 degree; There is inside inclined-plane locking plate (10) lower end, and the gradient on inclined-plane is 30 degree; Core bar (3) lower end centre bore has interior chamfering, and interior chamfering is 45 degree.
4, a kind of instrument of pulling out that is used to change gas lift valve according to claim 1 and 2, it is characterized in that: the quantity of locking plate (10) is 3.
5, a kind of instrument of pulling out that is used to change gas lift valve according to claim 1 and 2 is characterized in that: spring (4) is dextrorotation, number of total coils 7 circles, length of run 482mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201739355U CN201110147Y (en) | 2007-11-01 | 2007-11-01 | Fishing-out tool for exchanging gas-lift valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201739355U CN201110147Y (en) | 2007-11-01 | 2007-11-01 | Fishing-out tool for exchanging gas-lift valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110147Y true CN201110147Y (en) | 2008-09-03 |
Family
ID=39894677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201739355U Expired - Fee Related CN201110147Y (en) | 2007-11-01 | 2007-11-01 | Fishing-out tool for exchanging gas-lift valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110147Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563969A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | CYT-1 concentric dropping-fishing type gas lifting tool and use method thereof |
-
2007
- 2007-11-01 CN CNU2007201739355U patent/CN201110147Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563969A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | CYT-1 concentric dropping-fishing type gas lifting tool and use method thereof |
| CN104563969B (en) * | 2013-10-29 | 2017-08-04 | 中国石油天然气股份有限公司 | A kind of concentric retrievable type gaslift instruments of CYT 1 and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20111101 |