CN202381033U - Snubbing cement squeezing type tubing plug - Google Patents
Snubbing cement squeezing type tubing plug Download PDFInfo
- Publication number
- CN202381033U CN202381033U CN2011204759728U CN201120475972U CN202381033U CN 202381033 U CN202381033 U CN 202381033U CN 2011204759728 U CN2011204759728 U CN 2011204759728U CN 201120475972 U CN201120475972 U CN 201120475972U CN 202381033 U CN202381033 U CN 202381033U
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- crowded
- packing element
- grey
- cement
- cone
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Abstract
The utility model discloses a snubbing cement squeezing type tubing plug, which is composed of a wire socket (1), a cement paste concretion sleeve (4), cement squeezing ports (5), a steel wire rope (6), a slip bowl (7), a cement squeezing piston (15) and the like, wherein one end of the steel wire rope (6) is connected with the wire socket (1), the other end of the steel wire rope (6) is fixedly connected with the cement squeezing piston (15); the cement paste concretion sleeve (4) is provided with at least two cement squeezing ports (5); two ends of a glue barrel shaft (12) are in threaded connection with the cement paste concretion sleeve (4) and a cement squeezing barrel (14) respectively; the cement squeezing piston (15) is disposed in the cement squeezing barrel (14); one end of a slip (8) is disposed in the slip bowl (7), and the other end of the slip (8) is inserted into a cone body (9); and the slip bowl (7), a locking spring (10) and a glue barrel (11) are sequentially sleeved on the glue barrel shaft (12), wherein the slip bowl (7) and the locking spring (10) are disposed in an inclined groove of the cone body (9) in a floating mode. The snubbing cement squeezing type tubing plug is suitable for a water injection well where the inner wall of an oil pipe is reduced due to scaling, wherein the water injection well has a high formation pressure, and the oil pipe is blocked.
Description
Technical field
The utility model relates to a kind of band grey formula tubing plug of extruding, blowout prevention instrument in promptly a kind of oil pipe that is suitable for Operating Pressure.
Background technology
In oil, construction of natural gas fields process; Constantly development is perfect on assembling supporting and technology for well workover Operating Pressure technology; But not freely influence in the interior blowout prevention technology of oil pipe is managed; Cause partial wells because of interior choked technique does not pass a test, have that blanking plug flies out because of tube wall impurity has blanking plug, the operation vibrations result in blockage hidden danger such as device seal failure, Dagang Oilfield is the most serious with south oil district well; In the well pipe more than 50% incrustation scale, crystallization or corrosion phenomenon are arranged all, can't conventionally throw stifled back enforcement band and press workover treatment.
The utility model content
The technical problem that the utility model will solve provides a kind of band (interior latus rectum >=45mm) of extruding grey formula tubing plug latus rectum is irregular in water injection pipe string inwall causes because of incrustation scale, corrosion and diminish; Conventional blanking plug can't be thrown under the stifled situation; Make Operating Pressure be able to smooth implementation after effectively stopping up oil pipe, expand the scope of application that band is pressed workover treatment.
The utility model band grey formula tubing plug of extruding is by the fixed cover of rope socket 1, shear pin I2, shear pin II3, cement paste 4, squeeze ash mouthfuls 5, wire rope 6, slip spider 7, slips 8, cone 9, snap 10, packing element 11, packing element axle 12, squeeze ash tube 14, squeeze grey piston 15, gum cover 16 and shear pin III17 and form.Wherein, above-mentioned rope socket 1 is connected with the fixed cover 4 usefulness shear pin II3 of cement; Above-mentioned wire rope 6 places packing element axle 12, and the one of which end is equipped with cap and is connected with rope socket 1 usefulness shear pin I2, and its other end is fixedly connected with crowded grey piston 15; The fixed cover 4 of above-mentioned cement paste is provided with at least two said crowded ash mouths 5; Above-mentioned packing element axle 12 two ends are threaded with fixed cover 4 of cement paste and crowded ash tube 14 respectively; Above-mentioned crowded grey piston 15 places and squeezes in the ash tube 14; Above-mentioned slips 8 one ends place in the slip spider 7, and its other end inserts in cone 9 skewed slots; Above-mentioned slip spider 7, cone 9 and packing element 11 are sleeved on the packing element axle 12 successively; Above-mentioned cone 9 is connected with packing element axle 12 through shear pin III17; Above-mentioned snap 10 has opening, these snap 10 floating being placed in cone 9 skewed slots.
Above-mentioned crowded ash mouthful 5 usefulness gum covers 16 are waled.Above-mentioned crowded ash mouthfuls 5 is uniformly distributed with along fixed cover 4 circumferencial directions of cement paste.Above-mentioned crowded ash mouth 5 is oblique mouthful.
Above-mentioned slips 8 is from the locking angle with cone 9 inclined trough surface cone angles.
Above-mentioned packing element axle (12) and snap (10) coincide through ridge, and this ridge body simultaneously is 30 °, and another side is 90 °, and both compound prevention packing element axles (12) are descending.
Adopt the present technique scheme, the utility model band grey formula tubing plug of extruding mainly adopts steel wire to carry, slips anchoring and compress packing element and implement static seal after, clamp-on an amount of mortar sealing, can guarantee the safe, reliable of blowout prevention in the Operating Pressure process.Be to be directed against well workover Operating Pressure well pipe string, can't normally throw stifled a kind of interior obstruction means because of irregular the diminishing of interior latus rectum that fouling, burn into crystallization etc. causes.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further explain.
Fig. 1 is the extrude structural representation of grey formula tubing plug of the utility model band.
The specific embodiment
As shown in Figure 1, the utility model band grey formula tubing plug of extruding will squeeze ash tube 14 and fill cement paste 13 on ground, put on wire rope 6 earlier, will squeeze ash tube 14 again and be threaded with packing element axle 12; Wire rope 6 should leave the surplus capacity of 80--100 millimeter, and wire rope 6 upper ends are got ready with nut.Rope socket 1 is equipped with cap with wire rope and is connected with shear pin I 2, and rope socket 1 is connected with the fixed cover 4 usefulness shear pin II3 of cement, and remaining parts is as shown in Figure 1 upward to assemble before the well.When instrument go into the well put in place after, on carry wire rope, slip spider 7 and slips 8 are under the self gravitation effect, with the tube inner wall grappling; Carry shear pin III17 in the continuation and cut off, move compression packing element 11 bloated envelopes on the packing element axle 12, simultaneously, snap 10 and 12 lockings of packing element axle; Grappling is carried certain pulling force (3000--5000N) on also expanding and being honored as a queen again, and shear pin II3 is cut off, and carries in the continuation; The tool body part is motionless, and rope socket 1 squeezes through wire rope 6 pulling that grey piston 15 is up to begin to squeeze ash, and cement paste 13 is extruded from squeezing ash mouthfuls 5; Be cemented between fixed cover 4 of cement paste and the oil pipe annular space, squeezing ash mouthful 5 a places hoop has gum cover 16, and ash can not flow backwards.Owing in the pit shaft pressure is arranged, can play auxiliary seal effect (the oil pipe gate is opened) to the packing element of the envelope that expands, this moment, packing element top did not have pressure, is convenient to ash tube inner carrier mortar is extruded.After squeezing the ash completion, wait and coagulate.Carry certain pulling force (3000--4000N) in the continuation, shear pin I2 is cut off, and wire rope and rope socket 1 are proposed, and it remains in the oil pipe.
The oil pipe inner chamber is released through the packing element sealing and with the packing element upper pressure, again cement paste is extruded into packing element top, can guarantee that borehole pressure does not run the cement paste top, cement paste is fixed reliable; Being particularly suitable for managing the string water injection well that inwall diminishes because of fouling and pressure is higher stops up.
Claims (6)
1. be with the grey formula tubing plug of extrusion for one kind; Form by rope socket (1), shear pin I (2), shear pin II (3), the fixed cover of cement paste (4), crowded grey mouthful (5), wire rope (6), slip spider (7), slips (8), cone (9), snap (10), packing element (11), packing element axle (12), crowded ash tin (14), crowded grey piston (15), gum cover (16) and shear pin III (17), it is characterized in that:
Said rope socket (1) is connected with shear pin II (3) with the fixed cover of said cement (4);
Said wire rope (6) places said packing element axle (12), and the one of which end is equipped with cap and is connected with shear pin I (2) with said rope socket (1), and its other end is fixedly connected with said crowded grey piston (15);
The fixed cover of said cement paste (4) is provided with at least two said crowded ashes mouthful (5);
Said packing element axle (12) two ends are threaded with fixed cover of cement paste (4) and crowded ash tube (14) respectively;
Said crowded grey piston (15) places and squeezes in the ash tube (14);
Said slips (8) one ends place in the slip spider (7), and its other end inserts in cone (9) skewed slot;
Said slip spider (7), cone (9), snap (10) and packing element (11) are sleeved on the packing element axle (12) successively;
Said cone (9) is connected with said packing element axle (12) through shear pin III (17);
Said snap (10) has opening, and this snap (10) is floating to be placed in cone (9) skewed slot.
2. the band according to claim 1 grey formula tubing plug of extruding is characterized in that: said crowded ash mouthful (5) is waled with gum cover (16).
3. the band according to claim 2 grey formula tubing plug of extruding is characterized in that: said crowded ash mouthful (5) is uniformly distributed with along the fixed cover of said cement paste (a 4) circumferencial direction.
4. according to the grey formula tubing plug of extruding of each described band among the claim 1-3, it is characterized in that: said crowded ash mouthful (5) is oblique mouthful.
5. the band according to claim 1 grey formula tubing plug of extruding is characterized in that: said slips (8) and cone (9) inclined trough surface cone angle are for from the locking angle.
6. the band according to claim 1 grey formula tubing plug of extruding is characterized in that: said packing element axle (12) and snap (10) coincide through ridge, and this ridge body simultaneously is 30 °, and another side is 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204759728U CN202381033U (en) | 2011-11-25 | 2011-11-25 | Snubbing cement squeezing type tubing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204759728U CN202381033U (en) | 2011-11-25 | 2011-11-25 | Snubbing cement squeezing type tubing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381033U true CN202381033U (en) | 2012-08-15 |
Family
ID=46629546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204759728U Expired - Fee Related CN202381033U (en) | 2011-11-25 | 2011-11-25 | Snubbing cement squeezing type tubing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405334A (en) * | 2014-10-30 | 2015-03-11 | 中国石油天然气集团公司 | Stage cementer |
-
2011
- 2011-11-25 CN CN2011204759728U patent/CN202381033U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405334A (en) * | 2014-10-30 | 2015-03-11 | 中国石油天然气集团公司 | Stage cementer |
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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: 20120815 Termination date: 20201125 |