CN211474074U

CN211474074U - Water-blocking leakage-stopping anti-overflow environment-friendly, retrievable and drillable bridge plug

Info

Publication number: CN211474074U
Application number: CN202021633374.4U
Authority: CN
Inventors: 李友良; 彭威; 王庆刚; 李卓; 崔志强
Original assignee: Dongying Kaibo Petroleum Technology Co ltd
Current assignee: Dongying Kaibo Petroleum Technology Co ltd
Priority date: 2020-08-08
Filing date: 2020-08-08
Publication date: 2020-09-11
Anticipated expiration: 2030-08-08

Abstract

The utility model belongs to the technical field of the oil, especially, calorie of water leaking stoppage anti-overflow environmental protection can be taken and bore bridging plug, fixed inseparable enough, the difficult problem of dragging for to traditional bridging plug, the following scheme is presented including last fixed head, sending and sealing subassembly and packing element subassembly, the bottom outer wall of going up the fixed head encircles fixedly connected with and goes up solid fixed cylinder, goes up the bottom center of fixed head and installs and send and seal the subassembly, send and seal subassembly and last solid fixed cylinder mutual sliding connection, send the center department bottom of sealing the subassembly to install and connect the jar, the bottom of connecting the jar is vertical to be provided with down tube, and the top outer wall of down tube passes through the top connection and is connected the mutual fixed connection of jar, and the outer wall bottom of top connection rotates to cup joint and is fixed with the bottom connection, and the top and the packing element subassembly of bottom connection laminate each other, and the bottom outer wall sliding clamping of. The utility model has the advantages of can fix fast, keep sealed preventing to slide, conveniently catch and remove sealedly.

Description

Water-blocking leakage-stopping anti-overflow environment-friendly, retrievable and drillable bridge plug

Technical Field

The utility model relates to the field of petroleum technology, especially, relate to a truck water leaking stoppage anti-overflow environmental protection is desirable can bore bridging plug.

Background

The bridge plug is a well tool commonly used in oil field production, the foundation structure of the bridge plug comprises a releasing component, a rubber sleeve and a slip, the bridge plug is integrally lowered to a preset underground position through an oil pipe string during installation, then the rubber sleeve and the slip are set in a mode of pressing (injecting high-pressure water) into the oil pipe string, the bridge plug is used for sealing an oil-gas well layer, and the bridge plug has the characteristics of few construction procedures, short period and accurate clamping position and is divided into a permanent bridge plug and a removable bridge plug.

Traditional bridging plug fixed knot constructs too simply, the phenomenon that drops appears under the impact of water under high pressure very easily in the use, can not be fine carry out the shutoff to pipeline inside, cause the seepage phenomenon, still can arouse the safety in production accident when serious, trouble very, and present bridging plug drags for the difficulty in the construction operation in-process, often can appear dragging for and obtain unable taking out, cause complicated well easily, the processing difficulty, lead to the well drilling and repairing cycle to increase, increase the work degree of difficulty, there is great limitation.

Disclosure of Invention

The utility model provides a jam water leaking stoppage anti-overflow environmental protection can be taken and bore bridging plug has solved traditional bridging plug fixed inseparable enough, has dragged for the problem of obtaining the difficulty.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a water-blocking anti-overflow environment-friendly retrievable and drillable bridge plug comprises an upper fixing head, a seal feeding assembly and a rubber tube assembly, wherein the outer wall of the bottom of the upper fixing head surrounds and is fixedly connected with an upper fixing tube, the center of the bottom of the upper fixing head is provided with the seal feeding assembly, the seal feeding assembly is mutually and slidably connected with the upper fixing tube, the bottom of the center of the seal feeding assembly is provided with a connecting cylinder, the bottom of the connecting cylinder is vertically provided with a lower pressing tube, the outer wall of the top of the lower pressing tube is mutually and fixedly connected with the connecting cylinder through an upper connector, the bottom of the outer wall of the upper connector is rotatably sleeved and fixed with a lower connector, the top of the lower connector is mutually attached to the rubber tube assembly, the outer wall of the bottom of the upper fixing tube is slidably clamped with a sliding ring, the rubber tube assembly is sleeved and connected with the outer wall of the center of the connecting cylinder, the outer wall of the bottom of the connecting cylinder, which is close, the outer wall of lower centre ring encircles and is provided with the chucking subassembly, and the outer wall of the center department of chucking subassembly cup joints and is fixed with down solid fixed cylinder, the bottom fixedly connected with lower fixed head of lower solid fixed cylinder.

Preferably, send and seal the subassembly including setting a section of thick bamboo, a push cylinder and connecting pipe, set a section of thick bamboo and be cylindricly, and the internal diameter of setting a section of thick bamboo is hourglass hopper-shaped, the top of a push cylinder and the mutual slip joint in bottom of last fixed head, the connecting pipe cup joints fixedly each other through the outer wall of cutting nail with a push cylinder.

Preferably, the packing element subassembly comprises packing element, oil seal ring, last clamping ring and lower clamping ring, is the interval between a plurality of packing elements and is provided with the oil seal ring, goes up the clamping ring and is located the topmost of packing element, and lower clamping ring is located the bottommost of packing element, goes up the top of clamping ring and laminates each other with the bottom of slip ring, and the bottom of lower clamping ring is inside to be fixed each other through bolt and chucking subassembly.

Preferably, the chucking subassembly includes cone, slips, fixed spring and lower cone, goes up cone and lower cone all with the outer wall mutual sliding connection of centre ring down, and the slips is close to one side both ends of fixing cylinder down and is provided with the tooth that the direction of slope is opposite, and the center department of slips is provided with the recess, and the recess is inside to be provided with fixed spring, and the both ends of slips are run through down fixing cylinder lateral wall and are communicate each other with the outside, and a lateral wall that the slips was kept away from down fixing cylinder makes progress the cone and inclines with lower cone both sides.

Preferably, the vertical slip in inside center of packing element subassembly has cup jointed the setting sliding sleeve, goes up the center department outer wall fixedly connected with snap ring of center tube, and the top that the inner wall of setting sliding sleeve is close to the snap ring is provided with the solid fixed ring who corresponds each other with the snap ring, sets up the sliding sleeve bottom and the mutual joint of chucking subassembly.

Preferably, the bottom of the push cylinder is provided with a locking block in a penetrating manner, and the outer wall of the lower joint is provided with a groove corresponding to the locking block.

Compared with the prior art, the beneficial effects of the utility model are that:

1. when in use, the setting cylinder can be blocked by placing the steel ball, and then under the action of high-pressure water, the seal conveying component moves towards the bottom and then drives the connecting cylinder to move, the connecting cylinder drives the lower pressing pipe at the bottom to move, thereby the lower pressing pipe moves towards the bottom to drive the setting sliding sleeve to slide towards the bottom, the upper cone moves towards the bottom, the slips are extruded to be attached and fixed with the inner wall of the pipeline, because the directions of the teeth at the two ends of the outer wall of the slips are opposite, thereby effectively preventing sliding, the upper pressing ring drives the rubber cylinder to extrude the lower pressing ring at the bottom, the center of the rubber cylinder is protruded outwards, and then the rubber cylinder is tightly attached to the inner wall of the pipeline to finish setting, when the push cylinder moves towards the bottom, the locking block is clamped with the outer wall groove of the lower connector, so that the locking block can be effectively prevented from moving upwards and loosening.

2. When needing to remove the seat and sealing, drive the fixed head through fishing tool and stimulate to the top, then it drives the fixed cylinder and removes to the top to go up the fixed head, because the bottom and the slip ring slip joint of going up the fixed cylinder, the bottom inner wall and the push cylinder top slip joint of going up the fixed head, drive slip ring and push cylinder rebound, and then remove the extrusion to last clamping ring, and then can make the rubber section of thick bamboo resume, remove sealedly, the snap ring drives the cone through the seat sliding sleeve and removes, go up the cone and no longer extrude the slips, and then remove the joint with the pipeline inner wall, and then can conveniently pull out, and when being difficult to take out, pass through screw drill and send the subassembly and connect the jar to the inside rotation of push pipe down, make push pipe inside and screw drill closely laminate, at this moment, the push down can drive the upper central tube and remove, take out the bridging plug again.

Drawings

FIG. 1 is a schematic view of a truck water plugging anti-overflow environmental protection retrievable and drillable bridge plug provided by the utility model;

FIG. 2 is a sectional view of the internal structure of a truck water plugging anti-overflow environmental protection retrievable and drillable bridge plug provided by the utility model;

fig. 3 is the utility model provides an internal structure schematic diagram when the overflow protection of sticking water leaking stoppage overflow can be taken to bore bridge plug and set up.

In the figure: 1. an upper fixing head; 2. an upper fixed cylinder; 3. a seal feeding assembly; 301. setting the cylinder; 302. a push cylinder; 303. a connecting pipe; 4. a connecting cylinder; 5. pressing the pipe; 6. an upper joint; 7. a lower joint; 8. a slip ring; 9. a glue cartridge assembly; 901. a rubber cylinder; 902. an oil seal ring; 903. pressing a ring; 904. a lower pressure ring; 10. an upper center tube; 11. a threaded barrel; 12. a lower center ring; 13. a clamping assembly; 131. an upper cone; 132. slips; 133. fixing the spring; 134. a lower cone; 14. a lower fixed cylinder; 15. a lower fixing head; 16. setting a sliding sleeve; 17. a snap ring; 18. and (6) locking the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a truck water leakage-stopping anti-overflow environment-friendly retrievable and drillable bridge plug comprises an upper fixing head 1, a seal feeding component 3 and a rubber cylinder component 9, and is characterized in that the outer wall of the bottom of the upper fixing head 1 surrounds and is fixedly connected with an upper fixing cylinder 2, the center of the bottom of the upper fixing head 1 is provided with the seal feeding component 3, the seal feeding component 3 is mutually connected with the upper fixing cylinder 2 in a sliding manner, the bottom of the center of the seal feeding component 3 is provided with a connecting cylinder 4, the bottom of the connecting cylinder 4 is vertically provided with a lower pressing pipe 5, the outer wall of the top of the lower pressing pipe 5 is mutually and fixedly connected with the connecting cylinder 4 through an upper joint 6, the bottom of the outer wall of the upper joint 6 is rotatably sleeved and fixed with a lower joint 7, the top of the lower joint 7 is mutually attached with the rubber cylinder component 9, the outer wall of the bottom of the upper fixing cylinder 2 is slidably clamped with a sliding ring 8, the rubber cylinder component 9 is sleeved and, the outer wall of the bottom of the connecting cylinder 4 is fixedly sleeved with a threaded cylinder 11, the outer wall of the bottom of the threaded cylinder 11 is spirally fixed with a lower center ring 12, the outer wall of the lower center ring 12 is provided with a clamping assembly 13 in a surrounding manner, the outer wall of the center of the clamping assembly 13 is fixedly sleeved with a lower fixed cylinder 14, and the bottom of the lower fixed cylinder 14 is fixedly connected with a lower fixing head 15.

Send and seal subassembly 3 including setting a 301, a push cylinder 302 and connecting pipe 303, setting a 301 and being cylindricly, and the internal diameter of setting a 301 is hourglass hopper-shaped, and the top of push cylinder 302 and the mutual slip joint in bottom of last fixed head 1, connecting pipe 303 cup joints fixedly each other through the outer wall of shearing nail with push cylinder 302.

Packing element subassembly 9 comprises packing element 901, oil seal ring 902, last clamping ring 903 and lower clamping ring 904, is the interval between a plurality of packing elements 901 and is provided with oil seal ring 902, goes up clamping ring 903 and is located the topmost of packing element 901, and lower clamping ring 904 is located the bottommost of packing element 901, goes up the top of clamping ring 903 and laminates each other with slip ring 8's bottom, and the bottom of lower clamping ring 904 is inside to be fixed each other through bolt and chucking subassembly 13.

Chucking subassembly 13 includes cone 131, slips 132, dead spring 133 and cone 134 down, go up cone 131 and cone 134 down all with the outer wall mutual sliding connection of centre ring 12 down, slip 132 is close to one side both ends of fixing cylinder 14 down and is provided with the tooth that the slope opposite direction, the center department of slips 132 is provided with the recess, the inside dead spring 133 that is provided with of recess, the both ends of slips 132 are run through fixing cylinder 14 lateral wall down and are communicate each other with the outside, slip 132 keeps away from one side wall of fixing cylinder 14 down and goes up cone 131 and cone 134 both sides down and incline.

The vertical slip in inside center of packing element subassembly 9 has cup jointed and has set sliding sleeve 16, go up the center department outer wall fixedly connected with snap ring 17 of center tube 10, the top that the inner wall of setting sliding sleeve 16 is close to snap ring 17 is provided with the solid fixed ring that corresponds each other with snap ring 17, set sliding sleeve 16 bottom and the mutual joint of chucking subassembly 13, snap ring 17 drives cone 131 through setting sliding sleeve 16 and removes, make and go up cone 131 and no longer extrude slips 132, and then the joint of release and pipeline inner wall that slips 132 can be rapid under fixed spring 133's effect.

The bottom of the push cylinder 302 is provided with the locking piece 18 in a penetrating manner, the outer wall of the lower connector 7 is provided with a groove corresponding to the locking piece 18, and when the push cylinder 302 moves towards the bottom, the locking piece 18 is clamped with the groove of the outer wall of the lower connector 7 in a mutual clamping manner, so that the upper movement can be effectively prevented, and the looseness can be prevented.

The working principle is as follows: when the pipe fitting is used, the setting barrel 301 can be blocked by placing a steel ball, the sealing delivery assembly 3 is driven to move towards the bottom under the action of high-pressure water, the connecting cylinder 4 is driven to move, the lower pressing pipe 5 at the bottom is driven to move through the connecting cylinder 4, the lower pressing pipe 5 is driven to move towards the bottom, the setting sliding sleeve 16 is driven to slide towards the bottom, the upper cone 131 moves towards the bottom, the slips 132 are extruded, the slips 132 are attached and fixed with the inner wall of a pipe, the slip can be effectively prevented from sliding due to the fact that the teeth at two ends of the outer wall of the slips 132 are opposite in direction, the slip 132 continues to be pressed downwards after being fixed, the upper pressing ring 903 drives the rubber barrel 901 to extrude the lower pressing ring 904 at the bottom, the center of the rubber barrel 901 protrudes outwards, the rubber barrel 901 is tightly attached with the inner wall of the pipe, setting is completed, and the locking block 18 and the inner wall of the pushing barrel 302, when the pushing cylinder 302 moves towards the bottom, the locking block 18 is clamped with the groove on the outer wall of the lower connector 7, so that upward movement can be effectively prevented, and looseness is prevented, when the setting needs to be relieved, the fishing tool drives the upper fixing head 1 to pull towards the top, then the upper fixing head 1 drives the upper fixing cylinder 2 to move towards the top, because the bottom of the upper fixing cylinder 2 is in sliding clamping connection with the sliding ring 8, the inner wall of the bottom of the upper fixing head 1 is in sliding clamping connection with the top of the pushing cylinder 302, then the sliding ring 8 and the pushing cylinder 302 are driven to move upwards after the upper fixing cylinder 2 moves for a section, so that the extrusion on the upper pressing ring 903 is relieved, the rubber cylinder 901 can be recovered, the sealing is relieved, the lower connector 7 drives the clamping ring 17 to move through the upper central pipe 10, then the clamping ring 17 drives the upper cone 131 to move through the setting sliding sleeve 16, so that the upper cone 131 does not extrude the slip, and then the joint with the pipeline inner wall of relieving that slips 132 can be rapid under fixed spring 133, and then can conveniently pull out to when being difficult to take out, pass through sending to seal subassembly 3 and connecting cylinder 4 and to the inside rotation of push down pipe 5 through using the screw drill bit, make push down pipe 5 inside closely laminate with the screw drill bit, at this moment the pulling push down pipe 5 can drive center tube 10 and remove, takes out the bridging plug again.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The environment-friendly, retrievable and drillable bridge plug capable of blocking water and preventing overflow comprises an upper fixing head (1), a sealing delivery component (3) and a rubber barrel component (9), and is characterized in that the outer wall of the bottom of the upper fixing head (1) surrounds a fixedly connected upper fixing barrel (2), the sealing delivery component (3) is installed at the center of the bottom of the upper fixing head (1), the sealing delivery component (3) is mutually and slidably connected with the upper fixing barrel (2), a connecting cylinder (4) is installed at the bottom of the center of the sealing delivery component (3), a lower pressing pipe (5) is vertically arranged at the bottom of the connecting cylinder (4), the outer wall of the top of the lower pressing pipe (5) is mutually and fixedly connected with the connecting cylinder (4) through an upper connector (6), a lower connector (7) is rotatably sleeved and fixed at the bottom of the outer wall of the upper connector (6), the top of the lower connector (7) is mutually attached to the rubber barrel component (9), a sliding ring (8) is clamped at the outer wall of the, the outer wall of the center of the connecting cylinder (4) is sleeved with the rubber cylinder component (9), the bottom, close to the upper joint (6), of the outer wall of the connecting cylinder (4) is sleeved with the upper center pipe (10), the bottom outer wall of the connecting cylinder (4) is sleeved and fixed with the threaded cylinder (11), the bottom outer wall of the threaded cylinder (11) is spirally and fixedly surrounded with the lower center ring (12), the outer wall of the lower center ring (12) is circumferentially provided with the clamping component (13), the outer wall of the center of the clamping component (13) is sleeved and fixed with the lower fixed cylinder (14), and the bottom of the lower fixed cylinder (14) is fixedly connected with the lower fixed head (15).

2. The environment-friendly, removable and drillable bridge plug with the functions of water-blocking leakage and overflow prevention according to claim 1, wherein the sealing delivery assembly (3) comprises a setting barrel (301), a pushing barrel (302) and a connecting pipe (303), the setting barrel (301) is cylindrical, the inner diameter of the setting barrel (301) is funnel-shaped, the top of the pushing barrel (302) is slidably clamped with the bottom of the upper fixing head (1), and the connecting pipe (303) is fixedly sleeved with the outer wall of the pushing barrel (302) through a shear pin.

3. The water-clamping leakage-stopping overflow-preventing environment-friendly retrievable and drillable bridge plug as recited in claim 1, wherein the rubber cylinder assembly (9) is composed of rubber cylinders (901), oil seal rings (902), an upper press ring (903) and a lower press ring (904), the oil seal rings (902) are arranged among the rubber cylinders (901) at intervals, the upper press ring (903) is located at the topmost part of the rubber cylinders (901), the lower press ring (904) is located at the bottommost part of the rubber cylinders (901), the top of the upper press ring (903) is mutually attached to the bottom of the sliding ring (8), and the bottom of the lower press ring (904) is mutually fixed with the clamping assembly (13) through bolts.

4. The water-clamping leakage-stopping overflow-preventing environment-friendly retrievable and drillable bridge plug as recited in claim 1, wherein the clamping assembly (13) comprises an upper cone (131), a slip (132), a fixing spring (133) and a lower cone (134), the upper cone (131) and the lower cone (134) are slidably connected with the outer wall of the lower center ring (12), teeth with opposite inclination directions are arranged at two ends of one side of the slip (132) close to the lower fixed cylinder (14), a groove is arranged at the center of the slip (132), the fixing spring (133) is arranged in the groove, two ends of the slip (132) penetrate through the side wall of the lower fixed cylinder (14) to be communicated with the outside, and one side wall of the slip (132) far away from the lower fixed cylinder (14) is inclined towards two sides of the upper cone (131) and the lower cone (134).

5. The environment-friendly, retrievable and drillable bridge plug for water-blocking leakage and overflow prevention according to claim 1, wherein a setting sliding sleeve (16) is vertically slidably sleeved at the center of the interior of the rubber cylinder assembly (9), a snap ring (17) is fixedly connected to the outer wall of the center of the upper central tube (10), a fixing ring corresponding to the snap ring (17) is arranged on the top of the inner wall of the setting sliding sleeve (16) close to the snap ring (17), and the bottom of the setting sliding sleeve (16) is clamped with the clamping assembly (13).

6. The environment-friendly, removable and drillable bridge plug for water-blocking leakage and overflow prevention according to claim 2, characterized in that a locking block (18) is arranged at the bottom of the push cylinder (302) in a penetrating manner, and a groove corresponding to the locking block (18) is arranged on the outer wall of the lower joint (7).