CN211924133U - Mechanical removable bridge plug with high connection strength - Google Patents
Mechanical removable bridge plug with high connection strength Download PDFInfo
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- CN211924133U CN211924133U CN202020482665.1U CN202020482665U CN211924133U CN 211924133 U CN211924133 U CN 211924133U CN 202020482665 U CN202020482665 U CN 202020482665U CN 211924133 U CN211924133 U CN 211924133U
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Abstract
The utility model relates to a high joint strength's mechanical retrievable formula bridging plug belongs to oil gas well borehole operation instrument technical field. The automatic sealing device comprises a mandrel, a setting mechanism, a sealing mechanism, an upper anchoring mechanism, a lower anchoring mechanism and a lower connector, wherein the setting mechanism is installed at one end of the mandrel in a threaded mode, the upper anchoring mechanism is installed on the setting mechanism, the sealing mechanism is installed on the mandrel below the upper anchoring mechanism, the lower anchoring mechanism is installed on the sealing mechanism, and the lower connector is installed at the other end of the mandrel in a threaded mode. The bridge plug is matched with the upper anchoring mechanism and the lower anchoring mechanism through the setting mechanism, the sealing mechanism and the lower anchoring mechanism, so that the bridge plug can be subjected to setting and unsetting for multiple times in one-time operation to meet the requirements of different construction processes, can be completely recovered, effectively improves the working efficiency and reduces the construction cost; the swabbing effect that the bridge plug produced can be eliminated to the by-pass hole of this bridge plug, reduces the instrument damage, and the overall structure of this bridge plug can effectively be solved current bridge plug often takes place to take off the problem of mouthful, rupture ingeniously.
Description
Technical Field
The utility model relates to a high joint strength's mechanical retrievable formula bridging plug belongs to oil gas well borehole operation instrument technical field.
Background
The bridge plug is set, unset through pushing down and tension, at the in-process of setting, in order to ensure the moment of torsion of applying by the well head and transfer the ton position and can effectively transmit to the pit, need apply bigger hanging load to the bridge plug, can effectively guarantee like this that the bridge plug does not appear the condition of scurrying when the operation simultaneously.
The existing bridge plug is difficult to reach the balance of impact toughness and tensile strength due to the structure, so that the accidents of joint separation and breakage can be caused frequently, the normal construction progress is influenced, meanwhile, the integrity of the existing bridge plug is difficult to guarantee during the operation and recovery in the well, the recovery is not smooth, the working efficiency is reduced, the construction cost is increased, and therefore the bridge plug is necessary to be improved.
Disclosure of Invention
The utility model aims to provide a: the mechanical removable bridge plug has the advantages of ingenious structure, simplicity in operation, capability of effectively improving the working efficiency, reduction in construction cost and capability of solving the problem that the existing bridge plug is frequently broken due to structural reasons and has high connection strength.
The technical scheme of the utility model is that:
the utility model provides a high joint strength's mechanical removable formula bridging plug, it comprises dabber, seat and seals mechanism, sealing mechanism, goes up anchoring mechanism, anchor mechanism and lower clutch, its characterized in that: a setting mechanism is installed at one end of the mandrel in a threaded mode, an upper anchoring mechanism is installed on the setting mechanism, a sealing mechanism is installed on the mandrel below the upper anchoring mechanism, a lower anchoring mechanism is installed on the sealing mechanism, and a lower connector is installed at the other end of the mandrel in a threaded mode.
The core shaft is provided with a bypass hole, and the bypass hole is communicated with the inside of the core shaft.
The sitting sealing mechanism comprises an upper connector, a central pipe, a conversion sleeve, a compression spring and a plugging head, wherein the upper connector is installed at one end of the central pipe through threads, the conversion sleeve is fixedly installed on the central pipe below the upper connector, the compression spring is sleeved outside the conversion sleeve, the other end of the central pipe is in threaded connection with the mandrel, the plugging head is arranged inside the central pipe and is in threaded connection with the mandrel.
The upper anchoring mechanism is composed of a spring retainer ring, an upper slip sleeve, a leaf spring A and an upper slip, the spring retainer ring is installed at one end of the upper slip sleeve in a threaded mode, and the upper slip is installed at the other end of the upper slip sleeve through the leaf spring A.
Sealing mechanism by sealing joint, middle packing element, last packing element, lower packing element, packing element retaining ring, the bush, go up the cone, centrum and direction housing constitute down, the cone is installed to sealing joint's one end screw thread, the bush is installed to sealing joint's other end screw thread, last packing element has set gradually from top to bottom on the excircle of bush, middle packing element and lower packing element, lower packing element below is provided with the packing element retaining ring, the centrum is installed down to the below screw thread of packing element retaining ring, the inboard of bush is provided with the direction housing, the one end of direction housing extends to the outside of bush, the direction housing that extends to the bush outside is connected with the lower clutch contact.
The guide sleeve cover is provided with a J-shaped sliding groove.
And a spacer ring is arranged among the upper rubber cylinder, the middle rubber cylinder and the lower rubber cylinder.
And a guide ring is arranged between the upper rubber sleeve and the sealing joint.
And the inner side of the sealing joint is provided with a vulcanization sealing component through a bushing.
The lower anchoring mechanism comprises a lower slip, a traction sleeve, a friction block, a lock cap, a control ring, a guide pin, a leaf spring B and a leaf spring C, wherein the lower slip is arranged at one end of the traction sleeve through the leaf spring B, the lock cap is arranged at the other end of the traction sleeve through threads, the control ring is arranged on the inner side of the lock cap, the guide pin is arranged on the control ring, an installation groove is formed in the outer circle of the traction sleeve, and the friction block is arranged in the installation groove through the leaf spring C.
The utility model has the advantages that:
the mechanical removable bridge plug with high connection strength is matched with the lower anchoring mechanism through the setting mechanism, the sealing mechanism, the upper anchoring mechanism and the lower anchoring mechanism, so that the bridge plug can be subjected to setting and unsetting for multiple times in one-time operation to meet the requirements of different construction processes, can be completely recovered, effectively improves the working efficiency and reduces the construction cost; the bridge plug is provided with a bypass hole, so that a pumping effect during bridge plug unsealing can be eliminated, and tool damage is reduced; the friction block in the lower anchoring mechanism of the bridge plug can effectively ensure the centering of the bridge plug and overcome the setting resistance, so that the bridge plug cannot move randomly in the casing; the bridge plug has the advantages of ingenious integral structure and simple operation, and can effectively solve the problems that the joint of the existing bridge plug is frequently disconnected and broken due to structural reasons. Is very suitable for the downhole operation of oil and gas wells.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 1;
FIG. 4 is an enlarged view of the structure at C in FIG. 1;
FIG. 5 is an enlarged view of the structure shown at D in FIG. 1;
FIG. 6 is a schematic view of a partially deployed configuration of the guide shroud of FIG. 5;
FIG. 7 is a schematic structural view of the setting operation state of the present invention;
FIG. 8 is an enlarged view of E in FIG. 7;
FIG. 9 is an enlarged view of the structure at F in FIG. 7;
fig. 10 is a schematic structural view of the sliding groove moving track of the guide pin and the guide sleeve cover in the setting working state of the present invention.
In the figure: 1. the sealing device comprises a mandrel, 2, a setting mechanism, 2-1, an upper joint, 2-2, a central pipe, 2-3, a conversion sleeve, 2-4, a compression spring, 2-5, a plugging head, 3, a sealing mechanism, 3-1, a sealing joint, 3-2, a middle rubber cylinder, 3-3, an upper rubber cylinder, 3-4, a lower rubber cylinder, 3-5, a rubber cylinder retainer ring, 3-6, a lining, 3-7, an upper cone, 3-8, a lower cone, 3-9, a guide sleeve cover, 3-10, a vulcanized sealing assembly, 3-11, a bushing, 3-12, a chute, 3-13, a spacer ring, 3-14, a guide ring, 4, an upper anchoring mechanism, 4-1, a spring retainer ring, 4-2, an upper slip sleeve, 4-3, a leaf spring A, 4-4, 4, The device comprises an upper slip 5, a lower anchoring mechanism 5-1, a lower slip 5-2, a traction sleeve 5-3, a friction block 5-4, a locking cap 5-5, a control ring 5-6, a guide pin 5-7, a leaf spring B5-8, a leaf spring C5-9, a locking nut 6, a lower joint 7, a bypass hole 8, a recovery tool 9 and a sleeve.
Detailed Description
This high joint strength's mechanical removable formula bridging plug comprises dabber 1, seat seal mechanism 2, sealing mechanism 3, last anchoring mechanism 4, lower anchoring mechanism 5 and lower clutch 6, is provided with by-pass hole 7 on the dabber 1, by-pass hole 7 and the inside intercommunication of dabber 1, the effect of by-pass hole 7 is: the pumping effect when the bridge plug is unsealed is eliminated, and the damage to tools is reduced.
A setting mechanism 2 is installed at one end of the mandrel 1 through a thread, the setting mechanism 2 is composed of an upper joint 2-1, a central pipe 2-2, a conversion sleeve 2-3, a compression spring 2-4 and a plugging head 2-5, the upper joint 2-1 is installed at one end of the central pipe 2-2 through a thread, a limiting bump is arranged on the circumference of the upper joint and is connected with a recovery tool 8 in a matching manner, the upper joint 2-1 is fixedly connected with the central pipe 2-2 through a bolt, the conversion sleeve 2-3 is fixedly installed on the central pipe 2-2 below the upper joint 2-1 through a bolt, the compression spring 2-4 is sleeved outside the conversion sleeve 2-3, the other end of the central pipe 2-2 is connected with the mandrel 1 through a thread, the central pipe 2-2 is fixed with the mandrel 1 through a bolt, the plugging head 2-5 is arranged inside the central pipe 2, the plug head 2-5 is in threaded connection with the mandrel 1, an O-shaped sealing ring is arranged between the plug head 2-5 and the mandrel 1, and the plug head 2-5 has the following functions: and sealing the inner hole of the mandrel 1 so as to separate the inner hole of the central tube 2-2 from the inner hole of the mandrel 1.
An upper anchoring mechanism 4 is arranged on a central tube 2-2 of the setting mechanism 2, the upper anchoring mechanism 4 is composed of a spring retainer ring 4-1, an upper slip sleeve 4-2, a leaf spring A4-3 and an upper slip 4-4, the upper slip sleeve 4-2 is sleeved on the excircle of the central tube 2-2, one end of the upper slip sleeve 4-2 is provided with the spring retainer ring 4-1 in a threaded manner, the central tube 2-2 is provided with a limit boss which limits the spring retainer ring 4-1 so as to limit a compression spring 2-4 of the setting mechanism 2 through the spring retainer ring 4-1, the other end of the upper slip sleeve 4-2 is provided with the upper slip 4-4 through the leaf spring A4-3, and in operation, the leaf spring A4-3 can provide a pre-tightening force for the release of the upper slip 4-4 through self elastic force, when the upper slips 4-4 are acted by external force, the upper slips 4-4 extend from the upper slip sleeve 4-2 from inside to outside.
A sealing mechanism 3 is arranged on the mandrel 1 below the upper anchoring mechanism 4, the sealing mechanism 3 consists of a sealing joint 3-1, a middle rubber cylinder 3-2, an upper rubber cylinder 3-3 and a lower rubber cylinder 3-4, 3-5 parts of a rubber cylinder check ring, 3-6 parts of a lining, 3-7 parts of an upper cone, 3-8 parts of a lower cone and 3-9 parts of a guide sleeve cover, wherein a vulcanized sealing component 3-10 is arranged on the inner side of the sealing joint 3-1 through a bushing 3-11, the bushing 3-11 can limit the vulcanized sealing component 3-10, the upper cone 3-7 is arranged at one end of the sealing joint 3-1 through threads, the bushing 3-11 on the inner side of the sealing joint 3-1 is limited by the upper cone 3-7, and the upper cone 3-7 corresponds to an upper slip 4-4 of an upper anchoring mechanism 4.
A bush 3-6 is installed at the other end of the sealing joint 3-1 through threads, an upper rubber cylinder 3-3, a middle rubber cylinder 3-2 and a lower rubber cylinder 3-4 are sequentially arranged on the excircle of the bush 3-6 from top to bottom, a spacer ring 3-13 is arranged between the upper rubber cylinder 3-3, the middle rubber cylinder 3-2 and the lower rubber cylinder 3-4, the spacer ring 3-13 is used for providing powerful support for the rubber cylinders, a guide ring 3-14 is arranged between the upper rubber cylinder 3-3 and the sealing joint 3-1, the guide ring 3-14 limits the upper rubber cylinder 3-3, a rubber cylinder check ring 3-5 is arranged below the lower rubber cylinder 3-4, the rubber cylinder check ring 3-5 limits the lower rubber cylinder 3-4, and the guide ring 3-14 is matched with the rubber cylinder check ring 3-5, thereby integrally forming a limit state for the upper rubber cylinder 3-3, the middle rubber cylinder 3-2 and the lower rubber cylinder 3-4, wherein the lower cone 3-8 is arranged below the rubber cylinder check ring 3-5 by screw threads, and the lower cone 3-8 corresponds to the lower anchoring mechanism 5.
The inner side of the lining 3-6 is provided with a guide sleeve cover 3-9, the guide sleeve cover 3-9 is sleeved on the excircle of the mandrel 1, the guide sleeve cover 3-9 is connected with the mandrel 1 in a matched mode through a key and a key groove, so that torque can be conveniently transmitted between the mandrel 1 and the guide sleeve cover 3-9, the guide sleeve cover 3-9 is provided with a sliding groove 3-12, the sliding groove 3-12 is J-shaped, one end of the guide sleeve cover 3-9 extends to the outer side of the lining 3-6, and the guide sleeve cover 3-9 extending to the outer side of the lining 3-6 is in contact connection with the lower joint 6.
The sealing mechanism 3 is provided with a lower anchoring mechanism 5, the lower anchoring mechanism 5 consists of a lower slip 5-1, a traction sleeve 5-2, a friction block 5-3, a lock cap 5-4, a control ring 5-5, a guide pin 5-6, a leaf spring B5-7 and a leaf spring C5-8, the traction sleeve 5-2 is sleeved on a bushing 3-6 of the sealing mechanism 3, a locking nut 5-9 is installed on the bushing 3-6 of the sealing mechanism 3 in a threaded manner, the locking nut 5-9 limits the lower anchoring mechanism 5, one end of the traction sleeve 5-2 is provided with a lower slip 5-1 through a leaf spring B5-7, the lower slip 5-1 corresponds to a lower cone of the sealing mechanism 3, the other end of the traction sleeve 5-2 is provided with a lock cap 5-4 in a threaded manner, the inner side of the lock cap 5-4 is provided with a control ring 5-5, the control ring 5-5 is connected with the traction sleeve 5-2 in a matched mode through a key and a key groove, so that torque can be conveniently transmitted between the control ring 5-5 and the traction sleeve 5-2, a guide pin 5-6 is arranged on the control ring 5-5, the guide pin 5-6 is connected with a sliding groove 3-12 on a guide sleeve cover 3-9 of the sealing mechanism 3 in a matched sliding mode, an installation groove is formed in the excircle of the traction sleeve 5-2 and is a strip-shaped groove, a friction block 5-3 is arranged in the installation groove through a leaf spring C5-8, and the friction block 5-3 has the functions of: plays a role in centralizing and centering in the process of descending the well, and can bear the friction force.
The other end of the mandrel 1 is provided with a lower joint 6 in a threaded manner, and the lower joint 6 is connected with the mandrel 1 through a fastening bolt.
When the bridge plug works, the upper joint 2-1 and the lower joint 6 of the bridge plug are connected with the recovery tool 8 and the tubular column respectively, then downward pressure is applied to the recovery tool 8, the recovery tool 8 drives the bridge plug to move downwards, the friction block 5-3 on the bridge plug is always attached to the inner wall of the sleeve 9 under the action of the pretightening force of the leaf spring C5-8, the frictional resistance during downward movement can be effectively overcome, the bridge plug cannot move randomly under the application of the downward pressure in the sleeve 9, meanwhile, the bridge plug is always kept in a centered state when entering a well, and the bridge plug can smoothly enter a preset position through continuously transferring the tubular column.
When the bridge plug is lowered to a preset position, upward pulling force is applied to the recovery tool 8, the friction block 5-3 overcomes upward resistance, so that outer-layer parts of the bridge plug can not move randomly in the sleeve 9, and the central pipe 2-2, the plugging head 2-5, the mandrel 1, the guide sleeve cover 3-9, the lower joint 6, the sealing mechanism 3 and the upper anchoring mechanism 4 are driven to move upwards through the upper joint 2-1.
When the guide sleeve cover 3-9 moves upwards, the guide pin 5-6 slides downwards in the J-shaped sliding groove 3-12 of the guide sleeve cover 3-9 relatively until the guide pin moves into the chute of the sliding groove 3-12.
At the moment, the tension on the recovery tool 8 is kept, meanwhile, right-handed torque is applied, the guide sleeve covers 3-9 transmit right-handed torque through the mandrel 1, the mandrel rotates 1/4 circles to the right, the guide pins 5-6 are reversed and slide into the straight grooves, and bridge plugs are prepared to be set.
Releasing the uplifting tension and right-handed torque applied to the bridge plug, starting to press down the bridge plug through the recovery tool 8, driving the central pipe 2-2, the plugging head 2-5, the mandrel 1, the guide sleeve cover 3-9, the lower joint 6, the upper anchoring mechanism 4 and the sealing mechanism 3 to move downwards through the upper joint 2-1, and sliding the guide pin 5-6 upwards in the track of the guide sleeve cover 3-9 relatively until the lower cone is contacted with the lower slip 5-1, continuing to press down, and the lower slip 5-1 is propped open under the support of the lower cone and is contacted with the inner wall of the casing 9.
And continuously applying downward pressure, wherein the friction block 5-3 and the lower slip 5-1 can simultaneously overcome downward resistance, the upper joint 2-1 drives the central pipe 2-2, the plugging head 2-5, the mandrel 1, the guide sleeve cover 3-9 and the upper end anchoring mechanism to integrally move downwards until the upper slip 4-4 is contacted with the upper cone 3-7 and continues to press downwards, and similarly, the upper slip 4-4 is supported and opened under the support of the upper cone 3-7 and is contacted with the inner wall of the sleeve 9.
And (3) continuing to apply downward pressure again, overcoming downward friction resistance by the upper slips 4-4, starting to compress the compression spring 2-4 at the moment, pushing the mandrel 1 to move downwards by the upper joint 2-1 until the inclined surface step of the mandrel 1 is dead against the inclined surface of the complementary core 3-11, completely enabling the vulcanized sealing element to enter the sealing surface of the mandrel 1 at the moment, closing the bypass hole 7 on the mandrel 1, and effectively blocking the pressure difference between oil and the sleeve 9 when the bypass hole 7 of the bridge plug is closed so as to ensure the integrity of the pressure.
When the applied downward pressure reaches a certain value, as the mandrel 1 and the complementary core 3-11 are dead against each other, the downward force is transmitted to the sealing joint 3-1 through the complementary core 3-11 and pushes the whole sealing mechanism 3 to move downwards, the rubber barrel check ring pushes the lower cone, the tooth tips of the lower slip 5-1 are supported by the inclined plane of the lower cone 3-8 to bite into the inner wall of the sleeve 9, and the setting of the lower anchoring mechanism is finished.
The upper slips 4-4 and the lower slips 5-1 are anchored on the inner wall of the casing 9, and the upper side rubber cylinder 3-3, the middle rubber cylinder 3-2 and the lower side rubber cylinder 3-4 are completely extruded through the matching of the sealing joint 3-1 and the rubber through check ring, so that the upper side rubber cylinder 3-3, the middle rubber cylinder 3-2 and the lower side rubber cylinder 3-4 are tightly attached to the inner wall of the casing 9, and the setting is finished.
After the bridge plug is set, the pipe column is pressed down to enable the recovery tool 8 to move downwards, the lugs on the upper connector 2-1 of the bridge plug slide upwards in the J-shaped sleeve rail on the recovery tool 8 relatively, reversing is prepared, downward pressure is kept, meanwhile, left-hand torque is applied, the lugs of the upper connector 2-1 slide out along the sleeve rail of the recovery tool 8, then the pipe column is lifted up, and the recovery tool 8 and the bridge plug are successfully released.
After the construction is finished, the bridge plug is unsealed, the recovery tool 8 is connected with the bridge plug again, a certain downward pressure is applied, meanwhile, the pipe column is rotated rightwards, the guide sleeve cover 3-9 transmits torque rightwards through the mandrel 1, the right rotation is started, and the guide pin 5-6 is reversed into a straight groove from the inclined groove along the sliding groove 3-12 on the guide sleeve cover 3-9.
After the reversing of the guide pin 5-6 is completed, the pipe column is lifted, the upper joint 2-1 drives the central pipe 2-2 and the mandrel 1 to move upwards, the vulcanized sealing piece is separated from the sealing surface of the mandrel 1, the sealing is invalid, and the bypass hole 7 is opened at the moment, so that the pressure difference between oil and the sleeve 9 is balanced, and the smooth unsealing of the bridge plug is facilitated.
And continuously lifting the pipe column, wherein the central pipe 2-2 is attached to the inclined surface of the spring retainer ring 4-1 to drive the upper slip sleeve 4-2 to move upwards, and the upper slip 4-4 is unevenly stressed in the radial direction and is released under the elastic force of the leaf spring A4-3.
And (3) continuously lifting the pipe column, moving the guide sleeve cover 3-9 upwards under the drive of the mandrel 1, fitting the left end surface of the guide sleeve cover with the inner step surface on the right side of the bushing 3-6, driving the sealing joint 3-1 and the upper cone 3-7 to move upwards together by the bushing 3-6, freeing a releasing space for the upper rubber cylinder 3-3, the middle rubber cylinder 3-2 and the lower rubber cylinder 3-4, and allowing the rubber cylinders to rebound after losing compression force.
And lifting the pipe column again, driving the rubber cylinder retaining ring 3-5 and the lower cone body to move upwards by the bushing 3-6, losing the radial supporting force of the lower slip 5-1 and releasing under the elastic force of the leaf spring B5-7. Meanwhile, the J-shaped sliding grooves 3-12 of the guide sleeve covers 3-9 have a guide function, the guide pins 5-6 automatically slide to the initial positions along the sliding grooves 3-12, and the bridge plug is unsealed.
The bridge plug is matched with the upper anchoring mechanism and the lower anchoring mechanism through the setting mechanism, the sealing mechanism and the lower anchoring mechanism, so that the bridge plug can be subjected to setting and unsetting for multiple times in one-time operation to meet the requirements of different construction processes, can be completely recovered, effectively improves the working efficiency and reduces the construction cost; the bridge plug is provided with a bypass hole, so that a pumping effect during bridge plug unsealing can be eliminated, and tool damage is reduced; the friction block in the anchoring mechanism under the bridge plug can effectively ensure the centering of the bridge plug and overcome the setting resistance, so that the bridge plug cannot move randomly in the sleeve 9.
Claims (9)
1. The utility model provides a high joint strength's mechanical removable formula bridging plug, it comprises dabber (1), setting mechanism (2), sealing mechanism (3), goes up anchoring mechanism (4), lower anchoring mechanism (5) and lower clutch (6), its characterized in that: a setting mechanism (2) is installed at one end of the mandrel (1) through threads, an upper anchoring mechanism (4) is installed on the setting mechanism (2), a sealing mechanism (3) is installed on the mandrel (1) below the upper anchoring mechanism (4), a lower anchoring mechanism (5) is installed on the sealing mechanism (3), and a lower joint (6) is installed at the other end of the mandrel (1) through threads; the sitting and sealing mechanism (2) is composed of an upper connector (2-1), a central pipe (2-2), a conversion sleeve (2-3), a compression spring (2-4) and a plugging head (2-5), wherein the upper connector (2-1) is installed at one end of the central pipe (2-2) in a threaded mode, the conversion sleeve (2-3) is fixedly installed on the central pipe (2-2) below the upper connector (2-1), the compression spring (2-4) is sleeved on the outer side of the conversion sleeve (2-3), the other end of the central pipe (2-2) is in threaded connection with the mandrel (1), the plugging head (2-5) is arranged inside the central pipe (2-2), and the plugging head (2-5) is in threaded connection with the mandrel (1).
2. A high connection strength mechanically accessible bridge plug according to claim 1, wherein: the core shaft (1) is provided with a bypass hole (7), and the bypass hole (7) is communicated with the interior of the core shaft (1).
3. A high connection strength mechanically accessible bridge plug according to claim 1, wherein: the sealing mechanism (3) consists of a sealing joint (3-1), a middle rubber cylinder (3-2), an upper rubber cylinder (3-3), a lower rubber cylinder (3-4), a rubber cylinder retainer ring (3-5), a bushing (3-6), an upper cone (3-7), a lower cone (3-8) and a guide sleeve cover (3-9), wherein the upper cone (3-7) is arranged at one end of the sealing joint (3-1) through threads, the bushing (3-6) is arranged at the other end of the sealing joint (3-1) through threads, the upper rubber cylinder (3-3), the middle rubber cylinder (3-2) and the lower rubber cylinder (3-4) are sequentially arranged on the excircle of the bushing (3-6) from top to bottom, the rubber cylinder retainer ring (3-5) is arranged below the lower rubber cylinder (3-4), a lower cone (3-8) is installed below the rubber cylinder retainer ring (3-5) in a threaded mode, a guide sleeve cover (3-9) is arranged on the inner side of the lining (3-6), one end of the guide sleeve cover (3-9) extends to the outer side of the lining (3-6), and the guide sleeve cover (3-9) extending to the outer side of the lining (3-6) is connected with the lower connector (6) in a contact mode.
4. A high connection strength mechanically accessible bridge plug according to claim 3, wherein: the guide sleeve cover (3-9) is provided with a J-shaped sliding chute (3-12).
5. A high connection strength mechanically accessible bridge plug according to claim 3, wherein: and spacer rings (3-13) are arranged among the upper edge rubber cylinder (3-3), the middle rubber cylinder (3-2) and the lower edge rubber cylinder (3-4).
6. A high connection strength mechanically accessible bridge plug according to claim 3, wherein: a guide ring (3-14) is arranged between the upper edge rubber cylinder (3-3) and the sealing joint (3-1).
7. A high connection strength mechanically accessible bridge plug according to claim 3, wherein: the inner side of the sealing joint (3-1) is provided with a vulcanization sealing component (3-10) through a bushing (3-11).
8. A high connection strength mechanically accessible bridge plug according to claim 1, wherein: the upper anchoring mechanism (4) is composed of a spring retainer ring (4-1), an upper slip sleeve (4-2), a leaf spring A (4-3) and an upper slip (4-4), the spring retainer ring (4-1) is installed at one end of the upper slip sleeve (4-2) in a threaded mode, and the upper slip (4-4) is installed at the other end of the upper slip sleeve (4-2) through the leaf spring A (4-3).
9. A high connection strength mechanically accessible bridge plug according to claim 1, wherein: the lower anchoring mechanism (5) consists of a lower slip (5-1), a traction sleeve (5-2), a friction block (5-3), a lock cap (5-4), a control ring (5-5), a guide pin (5-6), a leaf spring B (5-7) and a leaf spring C (5-8), one end of the traction sleeve (5-2) is provided with a lower slip (5-1) through a flat spring B (5-7), the other end of the traction sleeve (5-2) is provided with a lock cap (5-4) in a threaded manner, the inner side of the lock cap (5-4) is provided with a control ring (5-5), the control ring (5-5) is provided with a guide pin (5-6), the excircle of the traction sleeve (5-2) is provided with an installation groove, and a friction block (5-3) is arranged in the installation groove through a flat spring C (5-8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020482665.1U CN211924133U (en) | 2020-04-06 | 2020-04-06 | Mechanical removable bridge plug with high connection strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020482665.1U CN211924133U (en) | 2020-04-06 | 2020-04-06 | Mechanical removable bridge plug with high connection strength |
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| CN211924133U true CN211924133U (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020482665.1U Active CN211924133U (en) | 2020-04-06 | 2020-04-06 | Mechanical removable bridge plug with high connection strength |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114412409A (en) * | 2022-02-16 | 2022-04-29 | 成都德维石油技术服务有限责任公司 | Mechanical packer |
| CN114458235A (en) * | 2022-01-12 | 2022-05-10 | 大庆市亚盛油田技术开发有限公司 | Mechanical type bridge plug capable of being repeatedly set |
| CN116752933A (en) * | 2023-08-22 | 2023-09-15 | 大庆市璞庆钻采设备制造有限公司 | Bridge plug capable of being fished for triggering deblocking |
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2020
- 2020-04-06 CN CN202020482665.1U patent/CN211924133U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458235A (en) * | 2022-01-12 | 2022-05-10 | 大庆市亚盛油田技术开发有限公司 | Mechanical type bridge plug capable of being repeatedly set |
| CN114458235B (en) * | 2022-01-12 | 2022-08-09 | 大庆市亚盛油田技术开发有限公司 | Mechanical type can set repeatedly and seal bridge plug |
| CN114412409A (en) * | 2022-02-16 | 2022-04-29 | 成都德维石油技术服务有限责任公司 | Mechanical packer |
| CN114412409B (en) * | 2022-02-16 | 2023-08-08 | 成都德维石油技术服务有限责任公司 | Mechanical packer |
| CN116752933A (en) * | 2023-08-22 | 2023-09-15 | 大庆市璞庆钻采设备制造有限公司 | Bridge plug capable of being fished for triggering deblocking |
| CN116752933B (en) * | 2023-08-22 | 2023-11-03 | 大庆市璞庆钻采设备制造有限公司 | Bridge plug capable of being fished for triggering deblocking |
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