CN200978648Y - Combined type oil line plugging device - Google Patents
Combined type oil line plugging device Download PDFInfo
- Publication number
- CN200978648Y CN200978648Y CN 200620158744 CN200620158744U CN200978648Y CN 200978648 Y CN200978648 Y CN 200978648Y CN 200620158744 CN200620158744 CN 200620158744 CN 200620158744 U CN200620158744 U CN 200620158744U CN 200978648 Y CN200978648 Y CN 200978648Y
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- oil pipe
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Abstract
The utility model discloses a composite oil-pipe plugging device which is an auxiliary special tool for oil-field wall-well pressure work, comprising a locking apparatus and a sealing apparatus, which is characterized in that the locking apparatus mainly comprises a locking lance and a slider slip, the locking lance is provided with an oblique chute, the slider slip is arranged in the chute. The sealing apparatus mainly comprises a sealing rubber cylinder, a sealing leather cup, and a rubber tower. The lower portion of the locking lance is provided with a sealing rubber cylinder, the lower portion of the locking lance is connected with a rubber cylinder center-pole, and the sealing rubber cylinder is sleeved on the rubber cylinder center-pole. The lower end of the rubber cylinder locking pipe is connected with a center-pole, the upper end of the center-pole fixes the sealing leather cup on the center-pole by a leather cup pressing cap nut, and the lower end of the center-pole is fixed with a rubber tower. The utility model is suitable for water-injection well oil-pipe plugging under 20 MPa well-bottom pressure, and capable of effectively plugging the oil-pipe fouling well. The plugging effect is good, and the oil-pipe plugging is more sealed when the under-well pressure gets bigger.
Description
Technical field
The utility model relates to a kind of oil field downhole tool, be particularly related to the supporting special tool of oil field well Operating Pressure, specifically, be a kind of in tripping out well shutoff oil pipe before the water injection string, a kind of down-hole capping tools of avoiding well inner high voltage fluid to spray in the oil pipe.
Background technology
Well Operating Pressure when construction, must the water injection string in tripping out well before, in well, be lowered to plugging device, avoid well inner high voltage fluid (mainly being water) in water injection string, to spray, realize not pressure release operation.Reach the purpose that keeps strata pressure and pollution-free operation.At present, the blocking technology check strap presses popularization of homework to use in the tubing string.Capping tools in the conventional well tubing string that uses is by interference fit between rubber parts and the oil pipe, utilizes the compressive characteristics sealing of rubber, by the elasticity shutoff oil pipe of self.What stopping means adopted is that asymmetric double-slider slips is spacing.Use pump truck that capping tools is sent to the precalculated position before playing oil pipe, effectively shutoff pressure is no more than 6Mpa, can only realize the oil pipe shutoff of lower pressure condition.Because the capping tools external diameter is big in the conventional well tubing string, the serious well of tubing string inner surface fouling can't be thrown stifled to the precalculated position, causes shutoff failure in the well tubing string, can't realize the shutoff of lift pipe string overall process; In addition, the effective shutoff pressure of capping tools is low in the conventional well tubing string, can not realize sealing for the high pressure well, can only play metering function, the Operating Pressure DeGrain.Between 12-15Mpa, the tube inner wall fouling is many as some oil-field brine well pressures, can not adopt the interior capping tools of conventional well tubing string to realize not pressure release operation.
Capping tools oil pipe plugging device in the conventional well tubing string can not satisfy the requirement of well Operating Pressure, and the development of well Operating Pressure presses for a kind of shutoff pressure height, can adapt to the many plugging devices of tube inner wall fouling.
The utility model content
The purpose of this utility model is to provide a kind of perfect capping tools for the water well drilling of fouling in high pressure well (20Mpa is following) and the oil pipe, improves plugging effect in the oil pipe, keeps strata pressure, guarantees that the well workover operation construction reaches requirement on environmental protection.
The utility model is achieved in that combined type oil pipe plugging device is made up of stopping means and sealing device, it is characterized in that: stopping means mainly is fine into by spacing lance bar and slide block slips, spacing lance bar has the inclined-plane chute, and the slide block slips of same gradient is arranged in the chute.On the external arc of slide block slips slip insert is arranged.The cylindrical radian of slip insert is identical with the tube inner wall radian, and the slip insert of slide block slips can be stuck on the tube inner wall.Chute end at spacing lance bar is fixed with block, anti-stop block landing.Sealing device mainly is made up of cartridge, sealing cup and Jiao Ta.In spacing lance bar bottom cartridge is arranged, cartridge is the annulus cylindricality.Be connected with the packing element center-pole in spacing lance bar bottom.Cartridge is enclosed within on the packing element center-pole.Packing element center-pole and packing element position-limiting tube are fixed on spacing lance bar lower end with cartridge.Packing element position-limiting tube lower end is connected with center-pole.The center-pole upper end is fixed on sealing cup on the step of center-pole by leather cup clamp nut and hold-down ring.The center-pole lower end is fixed with Jiao Ta by glue tower hold-down nut.
The gradient of spacing lance bar inclined-plane chute is between the 5-25 degree.
The fixed form of block adopts the block lock-screw to fix.
Center-pole connected with being connected by contiguous block of packing element position-limiting tube.The contiguous block internal thread connects center-pole; The contiguous block external screw thread connects packing element position-limiting tube 7.
The thickness of cartridge is between the 10-50 millimeter.
The rim of a bowl of sealing cup is directed downwards.
The operating principle of summary combined type oil pipe plugging device helps to understand the utility model.Before the construction of well Operating Pressure, on the water well test gate, connect short tube, combined type oil pipe plugging device is placed on from above in the short tube, connect pump truck water outlet pipeline above the short tube.Open test strobe and water filling gate, turn on pump, pump pressure is pushed up the precalculated position, down-hole with combined type oil pipe plugging device.This is that pump truck pressure rises straight line, termination of pumping.Open oil pipe emptying gate fast, promote combined type oil pipe plugging device and move upward this moment under the upward pressure effect of stratum.Slide block slips cunning is blocked tube inner wall.Jiao Ta and leather cup drive center-pole under the strata pressure effect up, the compression seal packing element, and cartridge is chap radially, bears against at tube inner wall and realizes sealing.Bottom pressure is big more, and the cartridge deformation tendency is big more, seals reliable more.After the shutoff success, can lay down water injection well, wellhead blowout preventor is installed, carry out well Operating Pressure construction construction.Realized the purpose of the preceding oil pipe shutoff of well lift pipe string.
Advantage of the present utility model is: use combined type oil pipe plugging device to finish not kill-job construction, make tubing string keep air-tight state, for the environmental protection in oil field plays a key effect; Simultaneously, also realized keeping the purpose of down-hole formation pressure, given security for improving the oil field development effect.
1, the combined type plugging device is applicable to the well that the shaft bottom strata pressure is high, can satisfy 20Mpa with interior injection well tubing shutoff needs;
2, combined type oil pipe plugging device can carry out effective shutoff to oil pipe fouling well;
3, the shutoff engineering time of combined type oil pipe plugging device is short, simple to operate.Only, in 20 minutes, promptly can finish with a pump truck and a tank car.Execute-in-place only needs switch well head gate;
4, the plugging effect of combined type oil pipe plugging device is good;
5, the shut-off capacity of combined type oil pipe plugging device changes with down-hole pressure, and the big more shutoff oil pipe of down-hole pressure seals more.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is the utility model combined type oil pipe plugging device structural profile schematic diagram.It is the structural representation of embodiment.
Among the figure, 1, spacing lance bar, 2, the slide block slips, 3, block, 4, the block lock-screw, 5, cartridge, 6, packing element center-pole, 7, the packing element position-limiting tube, 8, contiguous block, 9, center-pole, 10, leather cup clamp nut, 11, hold-down ring, 12, sealing cup, 13, Jiao Ta, 14, glue tower hold-down nut.
The specific embodiment
Embodiment: consult accompanying drawing.Combined type oil pipe plugging device is made up of stopping means and sealing device.
Stopping means mainly is made up of spacing lance bar 1 and slide block slips 2.Spacing lance bar 1 has 3 inclined-plane chutes, gradient 15 degree of inclined-plane chute.A slide block slips 2 is arranged in the chute.On the external arc of slide block slips 2 slip insert is arranged.The cylindrical radian of slip insert is identical with the tube inner wall radian, and the slip insert of slide block slips 2 can be stuck on the tube inner wall.Each chute end at spacing lance bar 1 is fixed with 1 block 3.The fixed form of block 3 adopts block lock-screw 4 fixing.
Sealing device mainly is made up of cartridge 5, sealing cup 12 and glue tower 13.In spacing lance bar 1 bottom cartridge 5 is arranged, cartridge 5 is the annulus cylindricality.Cartridge 5 external diameters are identical with the external diameter of packing element position-limiting tube 7, and thickness is 35 millimeters.Be connected with packing element center-pole 6 in spacing lance bar 1 lower thread.There is the protrusion step packing element center-pole 6 lower ends, cooperate with packing element position-limiting tube 7.Cartridge 5 is enclosed within on the packing element center-pole 6.Packing element center-pole 6 and packing element position-limiting tube 7 are fixed on spacing lance bar 1 lower end with cartridge 5.Packing element position-limiting tube 7 lower ends are connected with center-pole 9.Center-pole 9 connected with being connected by contiguous block 8 of packing element position-limiting tube 7.Be that contiguous block 8 internal threads connect center-pole 9; Contiguous block 8 external screw threads connect packing element position-limiting tube 7.Center-pole 9 upper ends are fixed on sealing cup 12 on the step of center-pole 9 by leather cup clamp nut 10 and hold-down ring 11.The rim of a bowl of sealing cup 12 is directed downwards.Center-pole 9 lower ends are fixed with glue tower 13 by glue tower hold-down nut 14.Glue tower 13 also claims plug.
Claims (6)
1, a kind of combined type oil pipe plugging device, form by stopping means and sealing device, it is characterized in that: stopping means mainly is made up of spacing lance bar (1) and slide block slips (2), spacing lance bar (1) has the inclined-plane chute, slide block slips (2) is arranged in the chute, on the external arc of slide block slips (2) slip insert is arranged, the cylindrical radian of slip insert is identical with the tube inner wall radian, the slip insert of slide block slips (2) can be stuck on the tube inner wall, be fixed with block (3) in the chute end of spacing lance bar (1), sealing device is mainly by cartridge (5), sealing cup (12) and Jiao Ta (13) form, in spacing lance bar (1) bottom cartridge (5) is arranged, cartridge (5) is the annulus cylindricality, be connected with packing element center-pole (6) in spacing lance bar (1) bottom, cartridge (5) is enclosed within on the packing element center-pole (6), packing element center-pole (6) and packing element position-limiting tube (7) are fixed on spacing lance bar (1) lower end with cartridge (5), packing element position-limiting tube (7) lower end is connected with center-pole (9), center-pole (9) upper end is fixed on sealing cup (12) on the step of center-pole (9) by leather cup clamp nut (10) and hold-down ring (11), and center-pole (9) lower end is fixed with Jiao Ta (13) by glue tower hold-down nut (14).
2, combined type oil pipe plugging device according to claim 1 is characterized in that: the gradient of spacing lance bar (1) inclined-plane chute is between the 5-25 degree.
3, combined type oil pipe plugging device according to claim 1 is characterized in that: the fixed form of block (3) adopts block lock-screw (4) fixing.
4, combined type oil pipe plugging device according to claim 1 is characterized in that: center-pole (9) connected with being connected by contiguous block (8) of packing element position-limiting tube (7), and contiguous block (8) internal thread connects center-pole (9); Contiguous block (8) external screw thread connects packing element position-limiting tube (7).
5, according to claim 1 or 2 or 3 or 4 described combined type oil pipe plugging devices, it is characterized in that: the thickness of cartridge (5) is between the 10-50 millimeter.
6, according to claim 1 or 2 or 3 or 4 described combined type oil pipe plugging devices, it is characterized in that: the rim of a bowl of sealing cup (12) is directed downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158744 CN200978648Y (en) | 2006-12-06 | 2006-12-06 | Combined type oil line plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158744 CN200978648Y (en) | 2006-12-06 | 2006-12-06 | Combined type oil line plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200978648Y true CN200978648Y (en) | 2007-11-21 |
Family
ID=38979025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620158744 Expired - Fee Related CN200978648Y (en) | 2006-12-06 | 2006-12-06 | Combined type oil line plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200978648Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049602A (en) * | 2020-10-09 | 2020-12-08 | 中国石油天然气集团有限公司 | Coiled tubing quick connection plugging device and use method |
| CN112227997A (en) * | 2020-11-17 | 2021-01-15 | 刘希明 | Coal bed gas pressurized well repairing device and well repairing method |
| CN112459746A (en) * | 2020-11-24 | 2021-03-09 | 中国石油天然气股份有限公司 | Oil pipe plugging device |
-
2006
- 2006-12-06 CN CN 200620158744 patent/CN200978648Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049602A (en) * | 2020-10-09 | 2020-12-08 | 中国石油天然气集团有限公司 | Coiled tubing quick connection plugging device and use method |
| CN112227997A (en) * | 2020-11-17 | 2021-01-15 | 刘希明 | Coal bed gas pressurized well repairing device and well repairing method |
| CN112459746A (en) * | 2020-11-24 | 2021-03-09 | 中国石油天然气股份有限公司 | Oil pipe plugging 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 |
Granted publication date: 20071121 Termination date: 20141206 |
|
| EXPY | Termination of patent right or utility model |