CN2383970Y - Drilling bridging plug - Google Patents
Drilling bridging plug Download PDFInfo
- Publication number
- CN2383970Y CN2383970Y CN 99211381 CN99211381U CN2383970Y CN 2383970 Y CN2383970 Y CN 2383970Y CN 99211381 CN99211381 CN 99211381 CN 99211381 U CN99211381 U CN 99211381U CN 2383970 Y CN2383970 Y CN 2383970Y
- Authority
- CN
- China
- Prior art keywords
- main piston
- ring
- pressure ring
- upper press
- mandrel
- 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 - Lifetime
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a drilling bridging plug, and an upper contact 1 and a core shaft 19 are locked in two-stage by a seat seal shear pin 6 and an anti-loss lock block 7. An anti-resist lock block 9 locks a main piston top-pressure ring 12 and a core shaft 9, and an anti-resist lock block 15 locks the main piston top-pressure ring 12 and a lower-pressure ring 16 to form an anti-resist mechanism. An anchor mechanism comprises an upper cone 17, a slip 18 and a lower cone 20, and a containment mechanism comprises the main piston top-pressure ring 12, a rubber barrel 13 and the lower-pressure ring 16, and the structure of the main piston top-pressure ring 12 and the relative position of the snap 11 and the O-shaped seal rings 10 and 14 are professionally designed. The drilling bridging plug is suitable for ash bearing plungers which can plug the bottom water of oil and gas well and manufacture an artificial well bottom.
Description
The utility model belongs to the oil recovery downhole tool, particularly a kind of drillable bridging plug that is used for underground work.
The bridging plug that uses both at home and abroad has salvagable and drillable two big series at present.Retrievable bridge plug has the advantage that salvaging is convenient, duty cycle is short, save operating cost.But because the temperature resistant capability low (120 ℃-170 ℃) of its packer accessory.Application life, weak point was no more than 1.5 years, used to be subjected to certain limitation.The drillable bridging plug has long service life, advantage that temperature resistant capability is high, has overcome the deficiency of retrievable bridge plug.But at present the drillable bridging plug that uses is because unreasonable structure, in the process of going into the well anti-soft, hinder ability firmly, easily produce midway the seat envelope and put phenomenon aside, the success rate of going into the well is low; Go into the well seat envelope of bridging plug needs one trip run, needs one trip run, the operating cost height and annotate ash.
The purpose of this utility model is to overcome above technical deficiency, a kind of long service life is provided, temperature resistant capability height (＞350 ℃), in the process of going into the well anti-soft, to hinder ability firmly strong, operation only need once play lower tubular column can finish go into the well seat envelope and annotate the drillable bridging plug of ash of bridging plug.
Task of the present utility model is, the top connection of drillable bridging plug, cylinder barrel, auxiliary piston, the anti-lock dog, a seat envelope shear pin lost constitute a bridge plug seat and be honored as a queen and propose the outer part of well, and all the other are for staying the down-hole part.Propose the outer part of well and stay the down-hole part and is connected by seat envelope shear pin and prevents that losing lock dog connects as one top connection and mandrel.Realize that top connection and mandrel are keel, all the other each parts are connected with keel and constitute the drillable bridging plug.
The drillable bridging plug has following characteristics, and one, lock tube 8 pin anti-ly to be lost lock dog 7 and make it in running order, and top connection 1 is connected with mandrel 19, guarantee bridging plug go into the well meet soft, propose when hindering firmly well outward partly with stay the down-hole part and do not produce to separate and put phenomenon aside.Its two, auxiliary piston 5 pins anti-resistance lock dog 9 and makes between main piston upper press ring 12 and the mandrel 19 and is connected, main piston upper press ring 12 and mandrel 19 do not produce relative motion when bridging plug being gone into the well meet soft or hard to hinder.Anti-resistance lock dog 15 makes main piston upper press ring 12 be connected with following pressure ring 16 formation, does not produce relative motion when meeting the soft or hard resistance, and main piston upper press ring 12 is not compressed with the packing element 13 of following pressure ring 16.Its three, upper cone 17 is threaded with following pressure ring 16, lower cone 20 is threaded with mandrel 19, upper cone 17 does not produce relative motion with lower cone 20, guarantees that the length watts 18 between upper cone 17 and the lower cone 20 is not thrown off.The drillable bridging plug reaches anti-resistance function.Its four, go into the well to put in place when bridging plug and finish seat envelope action, after proposing the outer part of well and staying the down-hole part and separate, the inner via hole of top connection 1 promptly becomes annotates grey passage, realizes once rising the lower tubular column operation and finishes the bridge plug seat envelope and annotate two operations of ash.
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 shows drillable bridging plug section of structure.
Among Fig. 1, the 1-top connection; The 2-cylinder barrel; 3-O shape sealing ring; 4-O shape sealing ring; The 5-auxiliary piston; 6-seat envelope shear pin; The anti-lock dog of losing of 7-; The 8-lock tube; The anti-resistance of 9-lock dog; 10-O shape sealing ring; The 11-snap; 12-main piston upper press ring; The 13-packing element; 14-O shape sealing ring; The anti-resistance of 15-lock dog; Pressure ring under the 16-; The 17-upper cone; The 18-slips; The 19-mandrel; The 20-lower cone
With reference to accompanying drawing 1 drillable bridging plug top connection 1 and cylinder barrel 2 by being threaded, between top connection 1 and the mandrel 19 by seat envelope shear pin 6 and the anti-lock dog 7 twin-stage interlockings of losing; Lock tube 8 lock is pressed the anti-lock dog 7 of losing, and is threaded between the main piston upper press ring 12; Auxiliary piston 5 is contained in the toroidal cavity between top connection 1 and the cylinder barrel 2; The prolongation lock set of auxiliary piston 5 is pressed anti-resistance lock dog 9, locking main piston upper press ring 12 and mandrel 19; Anti-resistance lock dog 15 locking main piston upper press rings 12 and following pressure ring 16; Upper cone 17 left sides are threaded with following pressure ring 16, and the right side is installed watts 18 successively, lower cone 20 mandrel 19 that is threaded; Main piston upper press ring 12 and the interior packing element 13 of installing of following pressure ring 16 annular grooves; O- ring seals 3,4 is installed on the auxiliary piston 5; Main piston upper press ring 12 left side external diameters are equipped with O-ring seals 10, and endoporus middle part annular groove is equipped with snap 11, on the endoporus right side fitting face mandrel 19 O-ring seals 14 is housed.
Below narrate one-stop operation process of the present utility model, the drillable bridging plug is connected on the oil pipe, the drillable bridging plug is delivered to the precalculated position of down-hole with oil pipe, inject highly pressurised liquid then in oil pipe, highly pressurised liquid flows to along oil pipe can bore the bridging plug top connection enters auxiliary piston 5 and main piston upper press ring 12 through liquid-through hole hydraulic chamber.Under the fluid pressure effect, auxiliary piston 5 is to left movement, removing the lock of antagonism resistance lock dog 9 presses, lock between main piston upper press ring 12 and the mandrel 19 and be disengaged, main piston upper press ring 12 begins to move right under the fluid pressure effect, packing element 13, pressure ring 16, upper cone 17 down, anti-resistance lock dog 15, snap 11 move right together, make slips 18 distendings, diameter increases, and is anchored on the shaft in wall.After grappling finishes, following pressure ring 16 and upper cone 17 stop to move right, anti-resistance lock dog 15 runs to the path place of mandrel 19, remove the locking between main piston upper press ring 12 and the following pressure ring 16, main piston upper press ring 12, packing element 13, snap 11 continue to move right, and packing element 13 diameter under the extruding of main piston upper press ring 12 and following pressure ring 16 increases, and contacts with shaft in wall, with the sealing of the annular space between drillable bridging plug outer wall and the shaft in wall, snap 11 is with the present envelope state of drillable bridging plug locking.When main piston upper press ring 12 moved right, lock tube 8 moved right simultaneously, removed the lock pressure effect of losing lock dog 7 to anti-, prevented losing to lock between 7 pairs of top connections 1 of lock dog and the mandrel 19 being disengaged, and had only this moment an envelope shear pin 6 to connect top connections 1 and mandrel 19.When the fluid pressure that injects reached design load, a seat envelope shear pin 6 was cut off, and was connected releasings between top connection 1 and the mandrel 19, finished the proposition well partly and stay separating of down-hole part outward.Separate finish after, on carry oil pipe one segment distance, in oil pipe, annotate ash, annotate the ash back and propose oil pipe and get final product.
The drillable bridging plug is applicable to oil gas well bottom water plugging, makes the ash that holds of artificial bottom of a well and fills in.
Claims (2)
1. the drillable bridging plug is by top connection 1 and cylinder barrel 2, main piston upper press ring 12, auxiliary piston 5, packing element 13, gripping mechanism is formed, it is characterized in that top connection 1 and cylinder barrel 2 are by being threaded, seal shear pin 6 and the anti-lock dog 7 twin-stage interlockings of losing by seat between top connection 1 and the mandrel 19, lock tube 8 locks are pressed the anti-lock dog 7 of losing, with be threaded between the main piston upper press ring 12, auxiliary piston 5 is contained in the toroidal cavity between top connection 1 and the cylinder barrel 2, the prolongation lock set of auxiliary piston 5 is pressed anti-resistance lock dog 9, locking main piston upper press ring 12 and mandrel 19, anti-resistance lock dog 15 locking main piston upper press rings 12 and following pressure ring 16, upper cone 17 left sides are threaded with following pressure ring 16, the right side is installed watts 18 successively, installation packing element 13 in lower cone 20 mandrel 19 that is threaded, main piston upper press ring 12 and following pressure ring 16 annular grooves.
2. drillable bridging plug according to claim 1, it is characterized in that installing on the auxiliary piston 5 O-ring seals 3,4, main piston upper press ring 12 left side external diameters are equipped with O-ring seals 10, and endoporus middle part annular groove is equipped with snap 11, on the endoporus right side fitting face mandrel 19 O-ring seals 14 is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211381 CN2383970Y (en) | 1999-05-31 | 1999-05-31 | Drilling bridging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211381 CN2383970Y (en) | 1999-05-31 | 1999-05-31 | Drilling bridging plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2383970Y true CN2383970Y (en) | 2000-06-21 |
Family
ID=34004345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99211381 Expired - Lifetime CN2383970Y (en) | 1999-05-31 | 1999-05-31 | Drilling bridging plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2383970Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114825A (en) * | 2013-02-06 | 2013-05-22 | 中国石油化工股份有限公司 | Composite-material-made clamping tile and production method thereof |
-
1999
- 1999-05-31 CN CN 99211381 patent/CN2383970Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114825A (en) * | 2013-02-06 | 2013-05-22 | 中国石油化工股份有限公司 | Composite-material-made clamping tile and production method thereof |
| CN103114825B (en) * | 2013-02-06 | 2016-08-03 | 中国石油化工股份有限公司 | A kind of composite slips and preparation method thereof |
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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 | ||
| CX01 | Expiry of patent term |