CN201358744Y - Well head pressing and sealing device of oil-water well - Google Patents
Well head pressing and sealing device of oil-water well Download PDFInfo
- Publication number
- CN201358744Y CN201358744Y CNU2009200189709U CN200920018970U CN201358744Y CN 201358744 Y CN201358744 Y CN 201358744Y CN U2009200189709 U CNU2009200189709 U CN U2009200189709U CN 200920018970 U CN200920018970 U CN 200920018970U CN 201358744 Y CN201358744 Y CN 201358744Y
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- oil
- well head
- supporting mechanism
- well
- water well
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Abstract
The utility model discloses a well head pressing and sealing device of oil-water well used in the oil industry, during the operation construction of lowering a tubing string, when an oil pipe lowered in an oil-water well is shallow, the dead weight of the oil pipe can not reach the requirements of the anchoring and the sealing of a down hole packer, the pressing construction is carried out on a well head, an oil pipe hanger exposed outside enters into a big cross, and then the down hole packer is further anchored and sealed. The device comprises a pressing mechanism and a strengthening supporting mechanism, wherein the pressing mechanism is arranged in the strengthening supporting mechanism, a down-hole oil pipe is pressed through the pressing mechanism, and the down-hole oil pipe is strengthened by the strengthening supporting mechanism. The device can be widely applied in various packers or the oil-water wells whose oil pipes are anchored at shallower position and the dead weight of the oil pipes can not reach the requirements of the sealing, reduces the working time, reduces the manufacturing cost and the labor intensity of workers, and guarantees the construction safety.
Description
Technical field
The utility model relates to the implement of petroleum industry oil-water well, oil-water well well head pressure foot seal apparatus particularly, in the job execution that is lowered to tubing string, when oil pipe that oil-water well plays more shallow, when the tubing string own wt does not reach requiring of downhole packer grappling, seat envelope, in the well head construction of pressurizeing, the boll-weevil hanger that exposes is entered in the big four, and make the further grappling of downhole packer, seat envelope.
Background technology
At present in the recovery process in oil field, for the more shallow oil-water well in mined bed, in the job execution that is lowered to tubing string, since the tubing string that descends more shallow, the oil pipe own wt does not reach the seat envelope requirement of downhole packer, downhole packer is the seat envelope fully, and what generally adopted this moment is left-hand thread elevator pressurization.Promptly when down-hole string needs the seat envelope, the height that down-hole string that will seat envelope hangs a bit, general hanger will be higher than plane 5-10cm on the well head big four, and pressurization makes the hanger seat go into big four then, and then drives the further seat envelope of enforcement packer under the down-hole string.Normally be set on together with the sleeve gate joint of wire rope with left-hand thread elevator and big four both sides.Utilize and carry wire rope on the tractor hoist, make the left-hand thread elevator descending, drive under the boll-weevil hanger and be advanced into the well head big four, make further seat envelope of downhole packer.Its shortcoming is, complicated operation, and the engineering time is long.Owing to tubing string is not set upright function, very easily damages the boll-weevil hanger packing.Poor stability because of big with carrying the wire rope load on the tractor hoist, easily causes wire rope clip to collapse out, and the wire rope slippage is thrown away, and easily hurts sb.'s feelings, and has security incident hidden danger.
Summary of the invention
The purpose of this utility model provides oil-water well well head pressure foot seal apparatus, changes present well head pressuring method, and isolated plant is provided, and alleviates working strength of workers, guarantees construction safety.
For reaching above-mentioned purpose, can use the present technique solution: oil-water well well head pressure foot seal apparatus comprises pressure exerting arrangement and sets upright supporting mechanism, pressure exerting arrangement is installed in sets upright in the supporting mechanism, by pressure exerting arrangement down-hole string is pressurizeed, and down-hole string is set upright by setting upright supporting mechanism.
Compare with present well head pressure foot envelope mode, the utlity model has following significant advantage: utilize mechanics principle, use the pressure exerting arrangement of hydraulic pressure, make the active force on top become the active force that presses down, thereby finish the purpose that reverse pressurization makes downhole packer grappling, seat envelope.Shorten the working time, improved rate when recovering the oil, reduced the crude oil loss, stopped the potential safety hazard that conventional left-hand thread elevator exists.This device possesses good safety and convenience, can not cause the hanger packing to damage in construction, obviously reduces production costs and working strength of workers.This device can be widely used under all kinds of seat envelopes or the tubing anchor that the implantation site is more shallow, and the oil pipe own wt does not reach the oil-water well that the seat envelope requires, in the well head construction of pressurizeing.Owing to shortened the engineering time, protected the packing of boll-weevil hanger, also be subsequent production elimination potential faults.The utility model is simple in structure, and is easy to manufacture, can make full use of waste and old well head four-way flange and tubing nipple manufacturing, with low cost.
Description of drawings
Accompanying drawing is the schematic diagram of installing and using of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further elaborated: referring to accompanying drawing, oil-water well well head pressure foot seal apparatus comprises pressure exerting arrangement 2 and sets upright supporting mechanism, pressure exerting arrangement 2 is installed in sets upright in the supporting mechanism.Set upright supporting mechanism and comprise upper cover plate 1, centralizer body 3 and support link 4, support link 4 is passed from centralizer body 3, and upper cover plate 1, centralizer body 3 and the assembling of well head big four are linked together, and uses fixed by nut.Upper cover plate 1 can use waste and old well head four-way flange to manufacture, and further reduces cost.The center, lower surface of setting upright the upper cover plate 1 of supporting mechanism is provided with the taper concave surface and cooperates with the upper surface of pressure exerting arrangement 2, and the neighboring is provided with installing hole, and supporting linkage 4 is installed.The outer of centralizer body 3 is provided with installing hole, and support link 4 is installed.The center, upper surface of centralizer body 3 is provided with the taper concave surface and cooperates with the lower surface of pressure exerting arrangement 2; Its center, lower surface is centering short segment and boll-weevil hanger 5 screwed connections.Support link 4 is provided with three at least.Pressure exerting arrangement 2 can be selected hydraulic or mechanical type jack for use, and is best with the hydraulic jack, thereon, following two ends chamfering, cooperates with the taper concave surface of upper cover plate 1 lower surface and the taper concave surface of centralizer body 3 upper surfaces.
When down-hole string down to design attitude because the own wt of tubing string reaches the seat envelope of downhole packer when requiring, can use this device to the down-hole string construction of pressurizeing, force downhole packer to reach and seal a requirement.Execute-in-place is as follows:
1, centralizer body 3 is rotated, is connected on the boll-weevil hanger 5;
2, the installing hole that support link 4 is passed centralizer body 3 outers is connected on the bolt mounting holes of well head big four, uses fixed by nut;
3, pressure exerting arrangement 2 is placed between two parties between upper cover plate 1 and the centralizer body 3;
4, the upper surface of the lower surface of upper cover plate 1 and centralizer body 3 is cooperated with pressure exerting arrangement 2 place;
5, first-class support link 4 upper end nuts, and regulate and set upright supporting mechanism by adjusting up and down the nut at two ends, find balance;
6, the operating handle of pressure exerting arrangement 2 is loaded onto, pressed continuously, the strength of utilizing pressure exerting arrangement 2 to provide presses down boll-weevil hanger 5, and boll-weevil hanger is advanced in the well head big four for 5 times, makes further seat envelope of downhole packer, reaches the designing requirement of seat envelope;
7, down-hole string behind seat envelope position, tightens the jackscrew on the well head big four down, fixes boll-weevil hanger 5, dismounting top nut takes off upper cover plate 1, pulls down pressure exerting arrangement 2, and then centralizer body 3 and support link 4 pulled down, finish pressurization construction to down-hole string.
Claims (6)
1, oil-water well well head pressure foot seal apparatus is characterized in that this device comprises pressure exerting arrangement (2) and sets upright supporting mechanism, is installed in pressure exerting arrangement (2) and sets upright in the supporting mechanism.
2, oil-water well well head pressure foot seal apparatus according to claim 1, it is characterized in that setting upright supporting mechanism and comprise upper cover plate (1), centralizer body (3) and support link (4), support link (4) is passed from centralizer body (3), upper cover plate (1) and centralizer body (3) are linked together with the well head big four, use fixed by nut.
3, oil-water well well head pressure foot seal apparatus according to claim 2 is characterized in that the center, lower surface of upper cover plate (1) is provided with the taper concave surface, and the neighboring is provided with installing hole.
4, oil-water well well head pressure foot seal apparatus according to claim 2 is characterized in that the outer of centralizer body (3) is provided with installing hole, and its center, upper surface is provided with the taper concave surface, and its center, lower surface is centering short segment and boll-weevil hanger (5) screwed connection.
5, oil-water well well head pressure foot seal apparatus according to claim 2 is characterized in that support link (4) is provided with three at least.
6, oil-water well well head pressure foot seal apparatus according to claim 1, the upper/lower terminal that it is characterized in that pressure exerting arrangement (2) is equipped with chamfering and cooperates with the taper concave surface of upper cover plate (1) lower surface and the taper concave surface of centralizer body (3) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200189709U CN201358744Y (en) | 2009-02-04 | 2009-02-04 | Well head pressing and sealing device of oil-water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200189709U CN201358744Y (en) | 2009-02-04 | 2009-02-04 | Well head pressing and sealing device of oil-water well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358744Y true CN201358744Y (en) | 2009-12-09 |
Family
ID=41424506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200189709U Expired - Fee Related CN201358744Y (en) | 2009-02-04 | 2009-02-04 | Well head pressing and sealing device of oil-water well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358744Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939775A (en) * | 2017-05-03 | 2017-07-11 | 梅宗禄 | Change tubing string and wellhead component hydraulic lift and its method |
| CN113622864A (en) * | 2020-05-06 | 2021-11-09 | 中核通辽铀业有限责任公司 | Method for sealing and reversely grouting orifice of ground-immersed drill hole |
-
2009
- 2009-02-04 CN CNU2009200189709U patent/CN201358744Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939775A (en) * | 2017-05-03 | 2017-07-11 | 梅宗禄 | Change tubing string and wellhead component hydraulic lift and its method |
| CN113622864A (en) * | 2020-05-06 | 2021-11-09 | 中核通辽铀业有限责任公司 | Method for sealing and reversely grouting orifice of ground-immersed drill hole |
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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: 20091209 Termination date: 20110204 |