CN216741443U - Side drilling well cementation suspension packing device - Google Patents
Side drilling well cementation suspension packing device Download PDFInfo
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- CN216741443U CN216741443U CN202220162409.3U CN202220162409U CN216741443U CN 216741443 U CN216741443 U CN 216741443U CN 202220162409 U CN202220162409 U CN 202220162409U CN 216741443 U CN216741443 U CN 216741443U
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Abstract
A side drilling well cementation suspension packing device belongs to the technical field of downhole tools for oil and gas fields. The utility model comprises a hanger, a tie-back insertion tube and a small rubber plug, and is characterized in that the hanger comprises a second central tube, the lower end of the second central tube is connected with the upper end of a hanging sealing sleeve, the lower end of the hanging sealing sleeve is connected with the upper end of a communicating sleeve, a hanging combined seal is arranged in a ring groove at the connecting part between the hanging sealing sleeve and the communicating sleeve, and the lower end of the communicating sleeve is connected with the upper end of a locking sleeve. The utility model has large inner drift diameter and high pressure resistance, improves the integral sealing performance of the tool after sealing tie-back, ensures the later-stage fracturing construction and achieves the aim of sidetracking well development.
Description
Technical Field
The utility model belongs to the technical field of downhole tools for oil and gas fields, and particularly relates to a side drilling well cementation suspension packing device.
Background
With the continuous promotion of oil and gas field development, low-yield and low-efficiency wells are more and more. Under the pressure of increasing and stabilizing yield, technical researches on old well treatment and capacity excavation are developed in various large oil fields. The old well sidetracking is an effective means for capacity excavation of old blocks, and the windowing sidetracking is to window an upper casing of an old well shaft and sidetrack a new well hole. The old well sidetracking has the advantages of saving resources and reducing cost.
However, the low-permeability block which needs to be subjected to separate-layer fracturing modification after domestic well cementation and completion at present has the following problems when the used hanger is small in borehole diameter and large in drift diameter of a pipe column: the quality of well cementation can not meet the requirements after well cementation and well completion; during fracturing, the sealing of the tie-back tool fails, the tie-back tool ejects the tie-back cylinder under the action of high pressure, so that later stage abnormal fracturing is caused, the sidetracking development effect is influenced, and a well is seriously scrapped.
Disclosure of Invention
Aiming at the problems, the utility model makes up the defects of the prior art and provides a side drilling well cementation suspension packing device; the utility model has large inner drift diameter and high pressure resistance, can ensure the well cementation quality and the smooth completion of fracturing construction, and achieves the aim of sidetracking well development.
In order to achieve the purpose, the utility model adopts the following technical scheme.
The utility model provides a side drilling well cementation suspension packing device which comprises a hanger, a tie-back insertion pipe and a small rubber plug and is characterized in that the hanger comprises a second central pipe, the lower end of the second central pipe is connected with the upper end of a suspension sealing sleeve, the lower end of the suspension sealing sleeve is connected with the upper end of a communicating sleeve, a suspension combined seal is arranged in a ring groove at the connecting part between the suspension sealing sleeve and the communicating sleeve, and the lower end of the communicating sleeve is connected with the upper end of a locking sleeve;
the locking sleeve is connected with the first shearing sleeve through a third hanging shear pin, a second clamping block is installed in a side groove of the locking sleeve, the lower end of the locking sleeve is fixedly connected with the upper end of a pressing sleeve through the second clamping block, the lower end of the pressing sleeve is connected with a rubber plug shaft, a hanging pressing cap, a blocking sleeve and a hanging back cap are connected to the outer side of the rubber plug shaft, a preset rubber plug and a small rubber sleeve are sleeved on the outer side of the rubber plug shaft, the preset rubber plug is arranged above the hanging pressing cap, the small rubber sleeve is arranged between the blocking sleeve and the hanging back cap, the outer side of the small rubber sleeve is pressed into the locking sleeve, and a hanging clamping ring is arranged between the hanging pressing cap and the blocking sleeve;
the second central pipe is inserted into a left-hand thread joint, the lower end of the left-hand thread joint is in threaded left-hand thread connection with the upper end of the lost glove, a pressing ring is fixed at the upper end of the lost glove through a second hanging shear pin, the lower end of the lost glove is connected with the upper end of an upper cone, a first locking spring is arranged on the inner side of the pressing ring, and the first locking spring is in one-way locking with a lock catch arranged on the outer side of the releasing sleeve;
the lower end of the upper cone is connected with the upper end of a suspension connecting sleeve, a slip is arranged on the upper portion of the suspension connecting sleeve, a lower cone is fixed on the middle portion of the suspension connecting sleeve through a first clamping block, an upper conical surface on the inner side of the slip is respectively connected with a lower conical surface of the upper cone, a lower conical surface on the inner side of the slip is connected with an upper conical surface of the lower cone, a second locking spring is arranged inside the lower cone, a lock catch is arranged on the outer side of the suspension connecting sleeve, the second locking spring is locked with the lock catch of the suspension connecting sleeve in a one-way mode, a piston is fixed on the lower end of the suspension connecting sleeve through a fourth suspension shear pin, and the inside of the upper end of the piston is connected with the upper end of the first clamping block;
the inner side of the upper end of the left-hand thread joint is connected with a first central pipe, the outer side of the lower end of the first central pipe is provided with a positioning groove, a positioning block is installed in the positioning groove of the first central pipe, the middle of the positioning block is provided with a small spring, the positioning block and the left-hand thread joint are both arranged in a loop connecting cylinder, the inner side of the lower end of the loop connecting cylinder is connected with the outer side of the upper end of a compression ring, the upper part of the loop connecting cylinder is fixedly connected with a left-hand sleeve through a first hanging shear pin, a large spring and an anti-rotation pin are arranged inside the left-hand sleeve, the upper end of the left-hand sleeve is connected with a lifting short circuit, a felt ring is arranged between the left-hand sleeve and the lifting short circuit, the lower end of the lifting short circuit is connected with the upper end of the first central pipe, and a rubber ring is arranged between the lifting short circuit and the first central pipe;
the tieback inserting pipe comprises an upper joint, the lower end of the upper joint is connected with the upper end of the inserting pipe connecting sleeve in a back-buckling manner and is fixed through a first inserting pipe shear pin, the lower end of the cannula connecting sleeve is connected with the upper end of the cannula central tube, the upper end of the cannula central tube is fixed with a shearing ring through a second cannula shear pin, a plurality of groups of cannula sealing sleeves and a plurality of groups of cannula combined seals are arranged on the outer side of the cannula central tube, the cannula sealing sleeves and the cannula combined seals are alternately arranged, the adjacent cannula sealing sleeves and the cannula combined seals are separated by a first cannula back cap, a second cannula back cap and a cannula clamping ring, the first cannula back cap is connected with the second cannula back cap, the snap ring is arranged in a groove arranged on the outer side of the cannula central tube, the lower end of the cannula central tube is connected with a third cannula back cap, and the lower end of the cannula central tube is connected with a support sleeve and fixed through a third cannula shear pin;
the small rubber plug comprises a framework, the upper end of the framework is connected with a rubber plug back cap, the outer side of the framework is provided with a leather cup, a rubber plug pressing cap and a rubber sleeve, the lower portion of the framework is connected with a rubber sleeve back cap, and a rubber plug clamping ring is arranged between the rubber plug pressing cap and the rubber sleeve back cap.
Further, a sheath is arranged outside the locking sleeve.
Further, a rubber tube is arranged on the outer side of the glove throwing sleeve.
Furthermore, dovetail grooves are formed in the inner conical surface of the lower end of the upper cone and the inner conical surface of the upper end of the lower cone, and the slips are clamped in the dovetail grooves.
Further, the lower end of the hanging connecting sleeve is connected with a large back cap.
Furthermore, the outer side of the lower end of the first central tube is also connected with a screw cap, and the screw cap is also arranged in the connecting back cylinder.
Further, the outer side of the first central pipe is provided with a track groove, and the anti-rotation pin is fixed in the track groove of the first central pipe.
Furthermore, an elastic sleeve is arranged in a groove on the outer side of the support sleeve.
Further, the lower end of the framework is connected with a guide cap.
The utility model has the beneficial effects.
The utility model carries out optimization design, and ensures the replacement quality; the inner diameter size and the pipe column size of the hanger and the tie-back insertion pipe do not influence the subsequent operation; the increase of operation times caused by inaccurate position judgment is reduced, the operation efficiency is improved, and the success of tie-back is ensured; the tie-back insertion pipe forms sealing and locking with the hanger after being tied back in place, the inner drift diameter is large, the pressure resistance is high, the overall sealing performance of the tool after sealing tie-back is improved, the later-stage fracturing construction is guaranteed, and the aim of sidetracking well development is fulfilled.
Drawings
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Fig. 1 is an overall half-sectional view of the hanger of the present invention.
Fig. 2 is an enlarged schematic view of the upper portion of the hanger of fig. 1 of the present invention.
Fig. 3 is a partially enlarged schematic view of the hanger of fig. 1 in accordance with the present invention.
Fig. 4 is an enlarged schematic view of the lower portion of the hanger of fig. 1 of the present invention.
Fig. 5 is an overall half-sectional view of the tieback cannula of the present invention.
Fig. 6 is an enlarged schematic view of the upper portion of the tieback cannula of fig. 5 of the present invention.
Fig. 7 is an enlarged, partially schematic view of the tieback cannula of fig. 5 in accordance with the present invention.
Fig. 8 is an enlarged schematic view of the lower portion of the tieback cannula of fig. 5 of the present invention.
Figure 9 is an overall half-section view of the small plug of the present invention.
The labels in the figure are: 1 is a lifting short joint, 2 is a rubber ring, 3 is a felt ring, 4 is a large spring, 5 is an anti-rotation pin, 6 is a first hanging shear pin, 7 is a reverse sleeve, 8 is a return connection barrel, 9 is a screw cap, 10 is a positioning block, 11 is a small spring, 12 is a first central pipe, 13 is a reverse buckling joint, 14 is a second central pipe, 15 is a lost glove, 16 is a second hanging shear pin, 17 is a first locking spring, 18 is a pressing ring, 19 is a rubber barrel, 20 is an upper cone, 21 is a hanging sealing sleeve, 22 is a hanging combined seal, 23 is a slip, 24 is a communication sleeve, 25 is a lower cone, 26 is a second locking spring, 27 is a first clamping block, 28 is a locking sleeve, 29 is a piston, 30 is a second clamping block, 31 is a first shearing sleeve, 32 is a third hanging shear pin, 33 is a pressing sleeve, 34 is a rubber plug shaft, 35 is a fourth hanging shear pin, 36 is a protecting sleeve, 37 is a preset rubber plug, 38 is a hanging cap, 39 is a pressing cap, 39 is a rubber plug, 40 is a small rubber sleeve, 41 is a hanging back cap, 42 is a hanging connecting sleeve, 43 is a blocking sleeve, 44 is a large spare cap, 45 is an upper joint, 46 is a first inserting pipe shear pin, 47 is an inserting pipe connecting sleeve, 48 is a shear ring, 49 is a second inserting pipe shear pin, 50 is an inserting pipe sealing sleeve, 51 is a first inserting pipe back cap, 52 is a second inserting pipe back cap, 53 is an inserting pipe clamping ring, 54 is an inserting pipe combined seal, 55 is an inserting pipe central pipe, 56 is a third inserting pipe back cap, 57 is a third inserting pipe shear pin, 58 is a supporting sleeve, 59 is an elastic sleeve, 60 is a rubber plug back cap, 61 is a leather cup, 62 is a framework, 63 is a rubber plug pressing cap, 64 is a rubber plug clamping ring, 65 is a rubber sleeve back cap, 66 is a rubber sleeve and 67 is a guiding cap.
Detailed Description
The embodiment provides a side drilling well cementation suspension packing device which comprises a hanger, a tie-back insertion pipe and a small rubber plug, wherein the hanger, the tie-back insertion pipe and the small rubber plug are matched for use to meet different functional requirements of the packing device.
The hanger comprises a second central pipe 14, the lower end of the second central pipe 14 is connected with the upper end of a hanging sealing sleeve 21, the lower end of the hanging sealing sleeve 21 is connected with the upper end of a communicating sleeve 24, a hanging combined seal 22 is arranged in a ring groove at the connecting part between the hanging sealing sleeve 21 and the communicating sleeve 24, and the lower end of the communicating sleeve 24 is connected with the upper end of a locking sleeve 28.
The locking sleeve 28 is connected with the first shearing sleeve 31 through a third hanging shear pin 32, a second fixture block 30 is installed in a side groove of the locking sleeve 28, the lower end of the locking sleeve 28 is fixedly connected with the upper end of a pressing sleeve 33 through the second fixture block 30, the lower end of the pressing sleeve 33 is connected with a rubber plug shaft 34, the outer side of the rubber plug shaft 34 is connected with a hanging pressing cap 38, a blocking sleeve 43 and a hanging back cap 41, a preset rubber plug 37 and a small rubber sleeve 40 are sleeved on the outer side of the rubber plug shaft 34, the preset rubber plug 37 is arranged above the hanging pressing cap 38, the small rubber sleeve 40 is arranged between the blocking sleeve 43 and the hanging back cap 41, the outer side of the small rubber sleeve 40 is pressed into the locking sleeve 28, and a hanging snap ring 39 is arranged between the hanging pressing cap 38 and the blocking sleeve 43.
The locking sleeve 28 is also provided with a sheath 36 outside, which plays the role of protecting the preset rubber plug 37 and facilitating installation.
The preset rubber plug 37 is arranged on a rubber plug shaft 34, the rubber plug shaft 34 is connected with the pressing sleeve 33 through threads, a clamping block groove is formed in the inner side of the pressing sleeve 33, the pressing sleeve 33 and the locking sleeve 28 are fixedly connected through a second clamping block 30 and a first shearing sleeve 31, and the preset rubber plug 37 can be fixed in the hanger.
The first shearing sleeve 31 and the locking sleeve 28 are fixedly connected through a third hanging shear pin 32, the third hanging shear pin 32 on the first shearing sleeve 31 is sheared by throwing a small rubber plug in the later period, the second clamping block 30 loses support and is recycled, the pressing sleeve 33 and the locking sleeve 28 are unlocked, a rubber plug clamping ring 64 on the small rubber plug is locked with a ring groove on the inner side of the pressing sleeve 33, the small rubber plug is combined with a preset rubber plug 37, and the small rubber plug is drilled out from the sheath 36.
The second central tube 14 is inserted into the back-off joint 13, the lower end of the back-off joint 13 is connected with the upper end of the releasing sleeve 15 in a threaded back-off mode, the upper end of the releasing sleeve 15 is fixed with a press ring 18 through a second hanging shear pin 16, and the outer side of the releasing sleeve 15 is provided with a rubber sleeve 19. The lower end of the throw-away sleeve 15 is connected with the upper end of the upper cone 20, a first locking spring 17 is arranged on the inner side of the pressing ring 18, and the first locking spring 17 is locked with a lock catch arranged on the outer side of the throw-away sleeve 15 in a one-way mode.
The lower end of the upper cone 20 is connected with the upper end of the suspension connecting sleeve 42, the slip 23 is arranged on the upper portion of the suspension connecting sleeve 42, the lower cone 25 is fixed in the middle of the suspension connecting sleeve 42 through a first clamping block 27, the upper conical surfaces of the inner sides of the slip 23 are respectively connected with the lower conical surface of the upper cone 20, the lower conical surface of the inner side of the slip 23 is connected with the upper conical surface of the lower cone 25, dovetail grooves are formed in the inner conical surface of the lower end of the upper cone 20 and the inner conical surface of the upper end of the lower cone 25, and the slip 23 is clamped in the dovetail grooves.
The lower cone 25 is internally provided with a second locking spring 26, the outer side of the hanging connecting sleeve 42 is provided with a lock catch, the second locking spring 26 is locked with the lock catch of the hanging connecting sleeve 42 in a one-way mode, the lower end of the hanging connecting sleeve 42 is fixedly provided with a piston 29 through a fourth hanging shear pin 35, the inner part of the upper end of the piston 29 is connected with the upper end of a first clamping block 27, and the lower end of the hanging connecting sleeve 42 is connected with a large back cap.
The inner side of the upper end of the reverse buckling connector 13 is connected with a first central tube 12, the outer side of the lower end of the first central tube 12 is provided with a positioning groove, a positioning block 10 is installed in the positioning groove of the first central tube 12, the middle of the positioning block 10 is provided with a small spring 11, the outer side of the lower end of the first central tube 12 is also connected with a nut 9, the positioning block 10 and the reverse buckling connector 13 are all arranged in a reverse connecting cylinder 8, the inner side of the lower end of the reverse connecting cylinder 8 is connected with the outer side of the upper end of a pressing ring 18, the upper portion of the reverse connecting cylinder 8 is fixedly connected with a reverse sleeve 7 through a first hanging shear pin 6, a large spring 4 and an anti-rotation pin 5 are arranged inside the reverse sleeve 7, the upper end of the reverse sleeve 7 is connected with a lifting short circuit 1, a felt ring 3 is arranged between the reverse sleeve 7 and the lifting short circuit 1, the lower end of the lifting short circuit 1 is connected with the upper end of the first central tube 12, and a rubber ring 2 is arranged between the lifting short circuit 1 and the first central tube 12; the outer side of the first center tube 12 is provided with a track groove, and the anti-rotation pin 5 is fixed in the track groove of the first center tube 12.
When in seat sealing, the positioning block 10 ascends to be separated from the limit of the tieback cylinder 8, and is popped up by the small spring 11 at the inner side, the positioning block 10 descends, the lower side groove is contacted with the upper end face of the tieback cylinder 8, the tieback cylinder 8 and the press ring 18 are pushed, and the rubber cylinder 19 is compressed downwards to complete the seat sealing.
The tieback cannula comprises an upper joint 45, the lower end of the upper joint 45 is connected with the upper end of a cannula connecting sleeve 47 in a back-buckling manner and is fixed through a first cannula shear pin 46, the lower end of the cannula connecting sleeve 47 is connected with the upper end of a cannula central tube 55, a shear ring 48 is fixed at the upper end of the cannula central tube 55 through a second cannula shear pin 49, a plurality of cannula sealing sleeves 50 and a plurality of cannula combined seals 54 are arranged on the outer side of the cannula central tube 55, the cannula sealing sleeves 50 and the cannula combined seals 54 are alternately arranged, a first cannula back cap 51 is arranged between each two adjacent cannula sealing sleeves 50 and each cannula combined seal 54, second intubate back of the body cap 52 and intubate snap ring 53 separate, and first intubate back of the body cap 51 is connected with second intubate back of the body cap 52, hangs snap ring 39 and places in the recess that sets up in the outside of intubate center tube 55, and intubate center tube 55 lower extreme is connected with third intubate back of the body cap 56, and the lower extreme of intubate center tube 55 is connected with and supports cover 58 and fixed through third intubate shear pin 57.
The support sleeve 58 of tie-back plug outside is fluted, elastic sleeve 59 sets up on the recess of support sleeve 58, 8 insides of tie-back section of thick bamboo of hanger are equipped with the draw-in groove, the elastic sleeve 59 outside of tie-back intubate is equipped with the draw-in groove, when the tie-back intubate inserts the hanger, the inboard inclined plane of elastic sleeve 59 of tie-back intubate meets with the outer inclined plane of support sleeve 58 recess, the draw-in groove of support elastic sleeve 59 rises out, make 8 inboard draw-in grooves of tie-back section of thick bamboo of hanger and the draw-in groove outside 59 of tie-back intubate lock, realize the locking of hanger and tie-back plug.
The small rubber plug comprises a framework 62, the upper end of the framework 62 is connected with a rubber plug back cap 60, the outer side of the framework 62 is provided with a rubber cup 61, a rubber plug pressing cap 63 and a rubber sleeve 66, the lower part of the framework 62 is connected with a rubber sleeve back cap 65, a rubber plug snap ring 64 is arranged between the rubber plug pressing cap 63 and the rubber sleeve back cap 65, and the lower end of the framework 62 is connected with a guide cap 67.
The principle of the various modes of operation is as follows.
And (3) card seating: the hoisting short connector 1 is connected with a drill string (the drill string is not shown in the figure), after the well is lowered to a set position, the piston 29 is pushed to go upwards by ball throwing and pressing in the drill string, the fourth hanging shear pin 35 is cut off, the first clamping block 27 is recovered and unlocked, the lower cone 25 and the second locking spring 26 are pushed to go upwards, the upper cone 20 goes downwards, the slips 23 are anchored on the inner wall of the casing, meanwhile, the lower cone 25, the second locking spring 26 and the hanging connecting sleeve 42 are locked, and the clamping work is finished.
Releasing: the positive rotation pipe column depends on the friction force between the slips 23 and the inner wall of the casing, the lifting short joint 1 drives the first central pipe 12, the anti-rotation pin 5, the inverse buckle joint 7 and the inverse buckle joint 13 to rotate positively, the first hanging shear pin 6 between the return connection cylinder 8 and the inverse buckle joint 7 is firstly sheared, then the first hanging shear pin is reversely buckled and disconnected with the releasing sleeve 15, the pipe column is lifted upwards, releasing work is completed, after releasing is confirmed, the pipe column is put back, and a certain load is pressed down.
Rubber plug compound displacement: and (3) squeezing and injecting cement paste into the pipe to reach the designed amount, putting a small rubber plug to replace the cement paste in the drill pipe, enabling the small rubber plug to reach the position of the preset rubber plug 37, locking an intubation clamping ring 53 on the small rubber plug with a ring groove on the inner side of a pressing sleeve 33 of the hanger, shearing a third hanging shear pin 32 on the first shearing sleeve 31 after the small rubber plug is compounded with the preset rubber plug 37, recovering a second clamping block 30, unlocking the pressing sleeve 33 with a locking sleeve 28, drilling out the preset rubber plug 37 from a sheath 36, and compounding the rubber plug in place.
Setting: by lifting and lowering the pipe column, the short joint 1 is lifted to drive the first central pipe 12, the positioning block 10, the left-hand thread joint 13, the second central pipe 14, the suspension sealing sleeve 21, the communication sleeve 24, the locking sleeve 28 and the sheath 36 to move upwards first, the positioning block 10 is separated from the tieback cylinder 8 and expands out by the small spring 11, the pipe column moves downwards, the lower side groove of the positioning block 10 is in contact with the upper end face of the tieback cylinder 8, the tieback cylinder 8 and the pressing ring 18 are pushed to move downwards, the second suspension shear pin 16 between the pressing ring 18 and the release sleeve 15 is firstly cut off, the rubber cylinder 19 is compressed to expand and seal, meanwhile, the pressing ring 18, the first locking spring 17 and the release sleeve 15 are locked, and the setting work is finished.
Tieback: the tie-back intubation connecting casing string (the casing string is not shown in the figure), after the well is lowered to a set position, the shearing ring 48 on the tie-back intubation firstly contacts with the upper end face of the tie-back tube 8 of the hanger, the length of the pipe column is adjusted after the position is determined, after the lowering tonnage exceeds a set value, the second intubation shearing nail 49 between the shearing ring 48 of the tie-back intubation and the intubation central tube 55 is cut off, the pipe column is lowered continuously, the clamping groove on the outer side of the elastic sleeve 59 of the tie-back intubation and the clamping groove on the inner side of the tie-back tube 8 of the hanger are locked, the intubation combined seal 54 of the tie-back intubation and the intubation seal sleeve 50 are attached to the inner side of the tie-back tube 8 of the hanger, the whole pipe column forms an inner seal, and the tie-back operation is in place.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the utility model.
Claims (9)
1. A side drilling well cementation suspension packing device comprises a hanger, a tie-back insertion pipe and a small rubber plug, and is characterized in that the hanger comprises a second central pipe (14), the lower end of the second central pipe (14) is connected with the upper end of a suspension sealing sleeve (21), the lower end of the suspension sealing sleeve (21) is connected with the upper end of a communication sleeve (24), a suspension combined seal (22) is arranged in a ring groove at the connection part between the suspension sealing sleeve (21) and the communication sleeve (24), and the lower end of the communication sleeve (24) is connected with the upper end of a locking sleeve (28);
the locking sleeve (28) is connected with the first shear sleeve (31) through a third hanging shear pin (32), a second fixture block (30) is arranged in a side groove of the locking sleeve (28), the lower end of the locking sleeve (28) is fixedly connected with the upper end of the pressing sleeve (33) through the second fixture block (30), the lower end of the pressing sleeve (33) is connected with a rubber plug shaft (34), the outer side of the rubber plug shaft (34) is connected with a suspension pressing cap (38), a blocking sleeve (43) and a suspension back cap (41), the outer side of the rubber plug shaft (34) is sleeved with a preset rubber plug (37) and a small rubber sleeve (40), the preset rubber plug (37) is arranged above the hanging pressing cap (38), the small rubber sleeve (40) is arranged between the blocking sleeve (43) and the hanging back cap (41), the outer side of the small rubber sleeve (40) is pressed into the locking sleeve (28), and a hanging snap ring (39) is arranged between the hanging pressing cap (38) and the blocking sleeve (43);
the second central tube (14) is inserted into a left-hand thread joint (13), the lower end of the left-hand thread joint (13) is in threaded left-hand thread connection with the upper end of a glove throwing sleeve (15), a pressing ring (18) is fixed at the upper end of the glove throwing sleeve (15) through a second hanging shear pin (16), the lower end of the glove throwing sleeve (15) is connected with the upper end of an upper cone (20), a first locking spring (17) is arranged on the inner side of the pressing ring (18), and the first locking spring (17) is in one-way locking with a locking buckle arranged on the outer side of the glove throwing sleeve (15);
the lower end of the upper cone (20) is connected with the upper end of a suspension connecting sleeve (42), a slip (23) is arranged at the upper part of the suspension connecting sleeve (42), a lower cone (25) is fixed at the middle part of the hanging connecting sleeve (42) through a first clamping block (27), the upper conical surface of the inner side of the slip (23) is respectively connected with the lower conical surface of the upper cone (20), the lower conical surface of the inner side of the slip (23) is connected with the upper conical surface of the lower cone (25), a second lock spring (26) is arranged in the lower cone (25), a lock catch is arranged on the outer side of the hanging connecting sleeve (42), the second lock spring (26) is unidirectionally locked with the lock catch of the suspension connecting sleeve (42), the lower end of the suspension connecting sleeve (42) is fixed with a piston (29) through a fourth suspension shear pin (35), the inner part of the upper end of the piston (29) is connected with the upper end of the first clamping block (27);
the inner side of the upper end of the left-hand thread joint (13) is connected with a first central tube (12), the outer side of the lower end of the first central tube (12) is provided with a positioning groove, a positioning block (10) is installed in the positioning groove of the first central tube (12), the middle part of the positioning block (10) is provided with a small spring (11), the positioning block (10) and the left-hand thread joint (13) are arranged in a loop pipe (8), the inner side of the lower end of the loop pipe (8) is connected with the outer side of the upper end of a pressing ring (18), the upper part of the loop pipe (8) is fixedly connected with a left-hand thread sleeve (7) through a first hanging shear pin (6), a large spring (4) and an anti-rotation pin (5) are arranged inside the left-hand thread sleeve (7), the upper end of the left-hand thread sleeve (7) is connected with a lifting short circuit (1), a felt ring (3) is arranged between the left-hand thread sleeve (7) and the lifting short circuit (1), the lower end of the lifting short joint (1) is connected with the upper end of the first central pipe (12), and a rubber ring (2) is arranged between the lifting short joint (1) and the first central pipe (12);
the tieback insertion tube comprises an upper connector (45), the lower end of the upper connector (45) is connected with the upper end of an insertion tube connecting sleeve (47) in a reverse buckling mode and is fixed through a first insertion tube shear pin (46), the lower end of the insertion tube connecting sleeve (47) is connected with the upper end of an insertion tube central tube (55), a shear ring (48) is fixed at the upper end of the insertion tube central tube (55) through a second insertion tube shear pin (49), a plurality of groups of insertion tube sealing sleeves (50) and a plurality of groups of insertion tube combined seals (54) are arranged on the outer side of the insertion tube central tube (55), the insertion tube sealing sleeves (50) and the insertion tube combined seals (54) are alternately arranged, adjacent insertion tube sealing sleeves (50) and insertion tube combined seals (54) are separated through a first insertion tube back cap (51), a second insertion tube back cap (52) and an insertion tube clamping ring (53), and the first insertion tube back cap (51) is connected with the second insertion tube back cap (52), the clamping ring is arranged in a groove formed in the outer side of the cannula central tube (55), the lower end of the cannula central tube (55) is connected with a third cannula back cap (56), and the lower end of the cannula central tube (55) is connected with a supporting sleeve (58) and fixed through a third cannula shear pin (57);
the small rubber plug comprises a framework (62), the upper end of the framework (62) is connected with a rubber plug back cap (60), the outer side of the framework (62) is provided with a leather cup (61), a rubber plug pressing cap (63) and a rubber sleeve (66), the lower part of the framework (62) is connected with a rubber sleeve back cap (65), and the rubber plug pressing cap (63) and a rubber sleeve back cap (65) are provided with rubber plug clamping rings (64).
2. Sidetrack cementing suspension packing device according to claim 1, characterized in that the locking sleeve (28) is externally provided with a jacket (36).
3. Sidetrack cementing suspension packing device according to claim 1, characterized in that the outside of the lost motion sleeve (15) is provided with a rubber cylinder (19).
4. The sidetracking well cementing suspension packing device according to claim 1, characterized in that the inner conical surface of the lower end of the upper cone (20) and the inner conical surface of the upper end of the lower cone (25) are provided with dovetail grooves, and the slips (23) are clamped in the dovetail grooves.
5. The sidetracking cementing suspension packing device according to claim 1, characterized in that the lower end of the suspension connecting sleeve (42) is connected with a large back cap.
6. The sidetracking cementing suspension packing device according to claim 1, characterized in that a screw cap (9) is further connected to the outside of the lower end of the first central tube (12), and the screw cap (9) is also placed in the tieback cylinder (8).
7. Sidetrack cementing suspension packing device according to claim 1, characterized in that the outside of the first base pipe (12) is provided with a track groove, the anti-rotation pin (5) being fixed in the track groove of the first base pipe (12).
8. Sidetracking cementing suspension packing device according to claim 1, characterized in that an elastic sleeve (59) is arranged in the outer groove of the support sleeve (58).
9. Sidetrack cementing suspension packing device according to claim 1, characterized in that a guiding cap (67) is connected to the lower end of the carcass (62).
Priority Applications (1)
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| CN202220162409.3U CN216741443U (en) | 2022-01-21 | 2022-01-21 | Side drilling well cementation suspension packing device |
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| CN202220162409.3U CN216741443U (en) | 2022-01-21 | 2022-01-21 | Side drilling well cementation suspension packing device |
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