CN217270103U

CN217270103U - Ejection-blocking combined bidirectional blowout preventer controlled by setting by electronic coding technology

Info

Publication number: CN217270103U
Application number: CN202123429921.4U
Authority: CN
Inventors: 禹栽星; 黄国全; 李长青
Original assignee: Daqing Jinxiangyu Technology Co ltd
Current assignee: Daqing Jinxiangyu Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-23
Anticipated expiration: 2031-12-31

Abstract

The utility model belongs to the technical field of oil field production equipment, in particular to an injection-plugging combined bidirectional blowout preventer controlled by an electronic coding technology for setting, which consists of an electronic coding device, a setting power cylinder device and a bidirectional blowout preventer device; the electronic coding device is used for controlling the downhole tool; the setting power cylinder device is used for generating pressure by entering well fluid in an oil well casing into the setting power cylinder; the bidirectional blowout preventer device is used for performing blowout prevention at a well position above a perforation section after perforation, so as to prevent oil from being ejected out of a well mouth after perforation; the bottom end of the electronic coding device is connected with the top end of the setting power cylinder device, and the bottom end of the setting power cylinder device is connected with the top end of the bidirectional blowout preventer device. The method is applied to the perforation operation of the oil well and is combined with perforation. The electronic coding technology is adopted to control the setting operation, the influence of well depth, casing damage and inclination is avoided, and well sealing can be accurately and reliably realized.

Description

Ejection-blocking combined bidirectional blowout preventer controlled by setting by electronic coding technology

Technical Field

The utility model belongs to the technical field of the oil field production facility, concretely relates to two-way blowout preventer of penetrating stifled antithetical couplet of sealing is sat in electronic coding technical control.

Background

The well sealing technology of lifting, setting and sealing adopted by the well sealing of the oil well casing pipe is influenced by different well depths, casing damage and gradients due to the fact that the well sealing depth is below kilometers, and the setting operation failure often occurs. If the setting operation is controlled by adopting the electronic coding technology, the method is not influenced by well depth, casing damage and inclination, and can accurately and reliably realize well sealing. Therefore, the injection plugging combined bidirectional blowout preventer controlled by the electronic coding technology for setting is designed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems and ensure that oil after perforation cannot be discharged out of a well mouth and the operation is environment-friendly, the dual-direction blowout preventer is used for controlling setting by an electronic coding technology and is applied to the perforation operation of an oil well and the perforation combination. The electronic coding technology is adopted to control setting operation, the influence of well depth, casing damage and inclination is avoided, and well sealing can be accurately and reliably realized.

The utility model discloses a technical scheme do: a kind of electronic coding technology controls the shooting that sets and blocks up and unites the two-way blowout preventer, the said two-way blowout preventer is made up of electronic coding device, setting power cylinder device and two-way blowout preventer device; the electronic coding device is used for controlling the downhole tool; the setting power cylinder device is used for generating pressure by entering well fluid in an oil well casing into the setting power cylinder; the bidirectional blowout preventer device is used for performing blowout prevention at a well position above a perforation section after perforation, so as to prevent oil from being ejected out of a well mouth after perforation; the bottom end of the electronic coding device is connected with the top end of the setting power cylinder device, and the bottom end of the setting power cylinder device is connected with the top end of the bidirectional blowout preventer device.

Further, the bidirectional blowout preventer device comprises an upper lifting joint, a releasing sleeve, a pull rod, a releasing stop pin, a pull sleeve, a releasing shear pin seat, a releasing shear pin, a push rod head, an anti-drop shear pin, a push rod, a fishing head assembly, a first steel ball sheath, a guide pin, a first steel ball sheath spring, an inner snap tooth seat, a central pipe, an outer snap tooth assembly, a second steel ball, a guide screw, a ball support, a second steel ball sheath spring, a liner pipe seat, a bolt, a rubber sleeve liner pipe, a rubber sleeve spacer ring, a central rod, an upper cone, a limit pin, an anchor tooth frame, an anchor tooth, a hoop spring, a lower cone, a tailstock and a tailstock screw;

the upper lifting joint is sleeved on the pull rod, the releasing sleeve is sleeved on the upper lifting joint, the lower end of the pull rod is installed on the pull sleeve, the releasing stop pin is installed on the pull rod, and the pull sleeve is connected with the lower end of the lower pull rod; the releasing shear pin seat is sleeved at the upper end of the central pipe, and the releasing shear pin is arranged on the releasing shear pin seat; the push rod head is arranged in a hole at the upper end of the central tube, and the lower end of the push rod head is connected with the push rod; the anti-drop shear pin is arranged in a threaded hole in the wall of the central tube and is used for fixing a push rod head annular groove, and the lower end of the push rod is connected with the upper end of the ball support; the lower end of the central pipe is connected with the central rod; the lower end of the fishing head assembly is connected with the inner clamping tooth seat; the first steel ball is arranged in a hole in the pipe wall of the upper lifting joint, the first steel ball sheath is sleeved on the excircle at the lower end of the upper lifting joint, and the guide pin is arranged in a threaded hole in the pipe wall at the lower end of the upper lifting joint; the first steel ball sheath spring is arranged at the lower end of the first steel ball sheath; the inner clamping teeth are arranged on the inner clamping tooth seat, and the lower end of the inner clamping tooth seat is connected with the liner tube seat; the ball support is arranged in a hole at the upper end of the central rod; the outer clamping tooth assembly is sleeved at the upper end of the central rod, the second steel ball is mounted in a pipe wall hole at the upper end of the central rod, the guide screw is mounted in a pipe wall threaded hole at the upper end of the central rod, the second steel ball sheath is sleeved at the upper end of the central rod, and the second steel ball sheath spring is mounted at the lower end of the second steel ball sheath; the lower end of the liner tube seat is connected with the rubber sleeve liner tube through a bolt, and the rubber sleeve liner tube is sleeved on the central rod; the rubber cylinders are sleeved on the rubber cylinder liner pipe, and the rubber cylinder spacer ring is arranged between two adjacent rubber cylinders; the lower end of the center rod is in threaded connection with the tailstock; the upper cone is sleeved on the rubber sleeve liner pipe, the lower end of the upper cone is connected with the anchor tooth frame through a limiting nail, the limiting nail is respectively installed in the threaded holes of the upper cone and the lower cone, and the lower end of the anchor tooth frame is connected with the lower cone through the limiting nail; the anchor teeth are arranged in the long holes in the pipe wall of the anchor tooth rack; the hoop spring is sleeved in a semi-ring groove in the middle of the anchor tooth, and the tailstock is installed on the lower cone through a tailstock screw.

Further, the electronic coding device comprises a lower connector, an electromagnetic valve end seat, an electromagnetic valve outer cylinder, an electromagnetic valve, a filter screen, a first middle joint, a spring seat, a spring, a circuit board base, a circuit board outer cylinder, a second middle joint, a battery outer cylinder, a third middle joint, an upper circuit board outer cylinder, a switch gland, a fourth middle joint, a short joint, an upper connector and a lower pressing cap;

the lower joint is connected with an electromagnetic valve end seat through threads, the electromagnetic valve end seat is connected with an electromagnetic valve outer cylinder through threads, and the upper end of the electromagnetic valve outer cylinder is connected with a first middle joint through threads; the electromagnetic valve is arranged in the electromagnetic valve outer cylinder; the filter screen is sleeved on the first middle joint in a semi-ring structure through a screw, the upper end of the first middle joint is connected with the outer cylinder of the circuit board, the spring seat is installed in the outer cylinder of the circuit board, the spring is installed between the spring seat and the base of the circuit board, the base of the circuit board is installed in the outer cylinder of the circuit board, and the upper end and the lower end of the base are supported through the spring; the upper end of the circuit board outer barrel is connected with a second middle joint thread, the upper end of the second middle joint is connected with the battery outer barrel, the upper end of the battery outer barrel is connected with a third middle joint, the upper end of the third middle joint is connected with the upper circuit board outer barrel, and the upper end of the upper circuit board outer barrel is connected with a fourth middle joint; the switch gland is installed in the threaded hole at the upper end of the third middle joint, the upper end of the fourth middle joint is connected with the short joint, and the upper end of the short joint is connected with the upper joint.

Further, the setting power cylinder device comprises an upper connector, a cylinder sleeve ball seat, a sliding ball support, a steel ball retainer, a first cylinder sleeve, a limiting sleeve, an upper piston, an upper middle joint, a lower piston, a lower middle joint, a screw, an adjustable outer cylinder, an adjustable inner cylinder, a chuck assembly, a lower pressing cap and a second cylinder sleeve;

the upper connector is in threaded connection with the cylinder sleeve ball seat, the cylinder sleeve ball seat is connected with the cylinder sleeve, the sliding ball support is sleeved on the upper connector, the steel balls are installed in holes of a steel ball retainer, the steel ball retainer is installed on the upper connector through threads, and the lower end of the first cylinder sleeve is connected with the upper connector and the middle connector; the limiting sleeve is sleeved on the upper connecting head, the upper piston is connected with the lower end of the upper connecting head, the lower end of the upper piston is connected with the lower piston through an upper middle joint, the lower end of the upper middle joint is connected with the second cylinder sleeve, and the lower end of the second cylinder sleeve is connected with a lower middle joint; the lower end of the lower piston is connected with the chuck assembly through a lower middle joint, and the lower end of the lower middle joint is connected with the adjustable outer cylinder; the screw penetrates through the through hole of the adjustable outer cylinder and then is installed in the threaded hole of the lower middle joint, the lower end of the adjustable outer cylinder is connected with the adjustable inner cylinder, the lower end of the adjustable inner cylinder is sleeved in the lower pressing cap, and the lower pressing cap is sleeved on the adjustable inner cylinder. The lower piston is also sleeved with a limit sleeve.

The utility model has the advantages that: the two-way blowout preventer is used in oil well perforation operation and perforation combination. The electronic coding technology is adopted to control the setting operation, the influence of well depth, casing damage and inclination is avoided, and well sealing can be accurately and reliably realized. On one hand, the problem of failure of mechanical operation well sealing in the conventional ejection and plugging combined operation is solved by adopting an electronic coding technology; on the other hand, the electronic coding technology is used for controlling the jetting and plugging combined well plugging device to work, so that the problems of complex well plugging operation and well plugging failure of inclined wells and horizontal wells are solved more effectively; and finally, driving the setting power cylinder device to generate pulling force to set the blowout preventer by using the pressure difference of the well fluid in the sleeve, thereby solving the problem that the conventional setting realizes setting by lifting and releasing the oil pipe to cause overlarge and overload load of the operation machine.

Drawings

Fig. 1 is a schematic view of an installation position of the first embodiment.

FIG. 2 is a schematic structural diagram of a two-way blowout preventer device according to an embodiment.

Fig. 3 is a partially enlarged view of a in fig. 2.

Fig. 4 is a partially enlarged view of B in fig. 2.

Fig. 5 is a partially enlarged view of C in fig. 2.

Fig. 6 is a partial enlarged view of D in fig. 2.

Fig. 7 is a partial enlarged view of E in fig. 2.

Fig. 8 is a partial enlarged view of F in fig. 2.

Fig. 9 is a partial enlarged view of G in fig. 2.

Fig. 10 is a partial enlarged view of H in fig. 2.

FIG. 11 is a schematic view of a setting cylinder device according to one embodiment.

Fig. 12 is a partial enlarged view of P in fig. 11.

Fig. 13 is a partial enlarged view of Q in fig. 11.

Fig. 14 is a partial enlarged view of R in fig. 11.

Fig. 15 is a partial enlarged view of T in fig. 11.

Fig. 16 is a partial enlarged view of W in fig. 11.

Fig. 17 is a schematic structural diagram of an electronic coding device according to a first embodiment.

Fig. 18 is a partial enlarged view of I in fig. 17.

Fig. 19 is a partially enlarged view of J in fig. 17.

Fig. 20 is a partial enlarged view of K in fig. 17.

Fig. 21 is a partial enlarged view of L in fig. 17.

Fig. 22 is a partial enlarged view of M in fig. 17.

Fig. 23 is a partial enlarged view of N in fig. 17.

Detailed Description

The first embodiment.

Referring to the figures, the two-way blowout preventer consists of an electronic coding device 500, a setting power cylinder device 800 and a two-way blowout preventer device 100; the electronic coding device 500 is used for control of the downhole tool; the setting power cylinder device 800 is used for generating pressure by entering well fluid in an oil well casing into the setting power cylinder; the bidirectional blowout preventer device 100 is used for performing blowout prevention at a well position above a perforation section after perforation, so as to prevent oil from being ejected out of a well mouth after perforation; the bottom end of the electronic coding device 500 is connected with the top end of the setting power cylinder device 800, and the bottom end of the setting power cylinder device 800 is connected with the top end of the bidirectional blowout preventer device 100.

The bidirectional blowout preventer device 100 comprises an upper lifting joint 1, a releasing sleeve 2, a pull rod 3, a releasing stop pin 4, a pull sleeve 5, a releasing shear pin seat 6, a releasing shear pin 7, a push rod head 8, an anti-drop shear pin 9, a push rod 10, a fishing head assembly 11, a first steel ball 12, a first steel ball sheath 13, a guide pin 14, a first steel ball sheath spring 15, an inner snap tooth 16, an inner snap tooth seat 17, a central pipe 18, an outer snap tooth assembly 19, a second steel ball 20, a guide screw 21, a ball support 22, a second steel ball sheath 23, a second steel ball sheath spring 24, a liner pipe seat 25, a bolt 26, a rubber liner pipe 27, a rubber liner 28, a rubber liner spacer ring 29, a central pipe 30, an upper cone 31, a limit pin 32, an anchor tooth holder 33, an anchor 34, a spring 35, a lower cone 36, a tail seat screw 37 and a tail seat screw 38;

the upper lifting joint 1 is sleeved on the pull rod 3, the releasing sleeve 2 is sleeved on the upper lifting joint 1, the lower end of the pull rod 3 is arranged on the pull sleeve 5, the releasing stop pin 4 is arranged on the pull rod 3, and the pull sleeve is connected with the lower end of the lower pull rod; the lost-hand shear pin seat 6 is sleeved at the upper end of the central tube 18, and the released shear pin 7 is arranged on the lost-hand shear pin seat 6; the push rod head 8 is arranged in a hole at the upper end of the central tube 18, and the lower end of the push rod head 8 is connected with the push rod 10; the anti-drop shear pin 9 is arranged in a threaded hole in the pipe wall of the central pipe 18 and fixes a push rod head annular groove, and the lower end of the push rod 10 is connected with the upper end of the ball support 22; the lower end of the central tube 18 is connected with a central rod 30; the lower end of the fishing head assembly 11 is connected with an inner clamping tooth seat 17; the first steel ball 12 is arranged in a hole in the pipe wall of the upper lifting joint 1, the first steel ball sheath 13 is sleeved on the excircle at the lower end of the upper lifting joint 1, and the guide pin 14 is arranged in a threaded hole in the pipe wall at the lower end of the upper lifting joint 1; the first steel ball sheath spring 15 is arranged at the lower end of the first steel ball sheath 13; the inner clamping teeth 16 are arranged on the inner clamping tooth seat 17, and the lower end of the inner clamping tooth seat 17 is connected with the liner tube seat 25; the ball support 22 is arranged in a hole at the upper end of the central rod 30; the outer clamping tooth assembly 19 is sleeved at the upper end of the central rod 30, the second steel ball 20 is installed in a pipe wall hole at the upper end of the central rod 30, the guide screw 21 is installed in a pipe wall threaded hole at the upper end of the central rod 30, the second steel ball sheath 23 is sleeved at the upper end of the central rod 30, and the second steel ball sheath spring 24 is installed at the lower end of the second steel ball sheath 23; the lower end of the liner seat 25 is connected with a rubber sleeve liner 27 through a bolt 26, and the rubber sleeve liner 27 is sleeved on the central rod 30; the rubber cylinders 28 are sleeved on the rubber cylinder liner tube 27, and the rubber cylinder spacer ring 29 is arranged between two adjacent rubber cylinders 28; the lower end of the central rod 30 is in threaded connection with the tailstock 37; the upper cone 31 is sleeved on the rubber sleeve liner 27, the lower end of the upper cone 31 is connected with the anchor tooth frame 33 through a limiting nail 32, the limiting nail 32 is respectively installed in the threaded holes of the upper cone 31 and the lower cone 36, and the lower end of the anchor tooth frame 33 is connected with the lower cone 36 through the limiting nail 32; the anchor teeth 34 are arranged in the long holes in the pipe wall of the anchor tooth rack 33; the hoop spring 35 is sleeved in a half-ring groove in the middle of the anchor teeth 34, and the tail seat 37 is mounted on the lower cone 36 through a tail seat screw 38.

The setting power cylinder device 800 comprises an upper connector 81, a cylinder sleeve ball seat 82, a sliding ball support 83, a steel ball 84, a steel ball retainer 85, a first cylinder sleeve 86, a limiting sleeve 87, an upper piston 88, an upper middle joint 89, a lower piston 90, a lower middle joint 91, a screw 92, an adjustable outer cylinder 93, an adjustable inner cylinder 94, a chuck assembly 95, a first lower pressing cap 96 and a second cylinder sleeve 97;

the upper connector 81 is in threaded connection with the cylinder sleeve ball seat 82, the cylinder sleeve ball seat 82 is connected with the cylinder sleeve 86, the sliding ball support 83 is sleeved on the upper connector 81, the steel balls 84 are installed in holes of the steel ball retainer 85, the steel ball retainer 85 is installed on the upper connector 81 through threads, and the lower end of the first cylinder sleeve 86 is connected with the upper middle joint 89; the limiting sleeve 87 is sleeved on the upper connector 81, the upper piston 88 is connected with the lower end of the upper connector 81, the lower end of the upper piston 88 is connected with the lower piston 90 through an upper middle joint 89, the lower end of the upper middle joint 89 is connected with a second cylinder sleeve 97, and the lower end of the second cylinder sleeve 97 is connected with a lower middle joint 91; the lower end of the lower piston 90 is connected with a chuck assembly 95 through a lower middle joint 91, and the lower end of the lower middle joint 91 is connected with an adjustable outer cylinder 93; the screw 92 passes through a through hole of the adjustable outer cylinder 93 and then is installed in a threaded hole of the lower middle joint 91, the lower end of the adjustable outer cylinder 93 is connected with the adjustable inner cylinder 94, the lower end of the adjustable inner cylinder 94 is sleeved in a first downward pressing cap 96, and the first downward pressing cap 96 is sleeved on the adjustable inner cylinder. The lower piston is also sleeved with a limit sleeve.

The electronic coding device 500 comprises a lower joint 51, a solenoid valve end seat 52, a solenoid valve outer cylinder 53, a solenoid valve 54, a filter screen 55, a first middle joint 56, a spring seat 57, a spring 58, a circuit board base 59, a circuit board outer cylinder 60, a second middle joint 61, a battery outer cylinder 62, a third middle joint 63, an upper circuit board outer cylinder 64, a switch gland 65, a fourth middle joint 66, a short circuit 67, an upper joint 68 and a second lower gland 69;

the lower joint 51 is connected with the electromagnetic valve end seat 52 through threads, the electromagnetic valve end seat 52 is connected with the electromagnetic valve outer cylinder 53 through threads, and the upper end of the electromagnetic valve outer cylinder 53 is connected with the first middle joint 56 through threads; the electromagnetic valve 54 is arranged in the electromagnetic valve outer cylinder 53; the filter screen 55 is sleeved on the first intermediate connector 56 in a semi-ring structure through a screw, the upper end of the first intermediate connector 56 is connected with the circuit board outer cylinder 60, the spring seat 57 is installed in the circuit board outer cylinder 60, the spring 58 is installed between the spring seat 57 and the circuit board base 59, the circuit board base 59 is installed in the circuit board outer cylinder 60, and the upper end and the lower end of the circuit board base are supported through the spring; the upper end of the circuit board outer cylinder 60 is in threaded connection with a second middle joint 61, the upper end of the second middle joint 61 is connected with a battery outer cylinder 62, the upper end of the battery outer cylinder 62 is connected with a third middle joint 63, the upper end of the third middle joint 63 is connected with an upper circuit board outer cylinder 64, and the upper end of the upper circuit board outer cylinder 64 is connected with a fourth middle joint 66; the switch gland 65 is installed in a threaded hole at the upper end of the third middle joint 63, the upper end of the fourth middle joint 66 is connected with a short joint 67, and the upper end of the short joint 67 is connected with an upper joint 68.

The electronic coding device is used as an independent and universal device and is suitable for the working control of various downhole tools. The main function of the setting power cylinder device is to enter the setting power cylinder through well fluid in an oil well casing to generate pressure, and because the upper piston and the lower piston are connected to the lower end of the electronic coding device and are fixedly connected by a pipe column, the pressure generated in the cylinder pushes the upper middle joint and the lower middle joint and drives the cylinder sleeve ball support, the first cylinder sleeve, the second cylinder sleeve, the adjustable outer cylinder, the adjustable inner cylinder and the lower pressing cap to move downwards. When well fluid controlled by an electronic coding device enters a central hole in the upper part of the upper connector, the sliding ball support is pushed to move downwards, so that steel balls fall into a groove in the outer surface of the sliding ball support, the upper connector is separated from the cylinder sleeve ball support, meanwhile, a channel between the central hole in the upper part and the central hole in the lower part of the upper connector is opened, the well fluid enters cavities in the lower parts of the power cylinder and the piston of the power cylinder from the central hole of the piston rod, and the well fluid pushes the upper middle connector and the lower middle connector to move downwards together with the cylinder sleeve ball seat, the first cylinder sleeve, the second cylinder sleeve, the adjustable outer cylinder, the adjustable inner cylinder and the lower pressing cap.

The bidirectional well sealing device has the main functions that after perforation, well sealing is carried out at well positions above the perforation section, and oil is prevented from being sprayed out of a well mouth after perforation. The device is connected to the lower end of a setting power cylinder device, the rubber cylinder is compressed by the downward moving thrust of the setting power cylinder, so that the upper cone and the lower cone expand anchor teeth and are anchored on the inner wall of a sleeve, and when the anchoring force is greater than 6.5 tons, the setting releasing of the bidirectional well sealing device is realized.

When the downward thrust from the adjustable inner cylinder of the setting power cylinder is generated, the lifting joint, the fishing head assembly, the inner clamping tooth seat, the liner tube, the rubber tube spacer ring, the lower cone, the anchor tooth frame and the anchor tooth are pushed downward. After the anchor teeth are expanded to be attached to the inner wall of the sleeve, the rubber cylinder is continuously compressed. And when the downward pressure is greater than 6.5 tons, the outer clamping tooth assembly is clamped in the inner clamping tooth, and when the downward pressing force (relative to the upward pulling force of the pull rod) is greater than 6.5 tons, the releasing shear pin is pulled by the pull sleeve to cut after the hand-throwing shear pin seat is pulled, and at the moment, the lower end of the pull rod is separated from the upper end of the central pipe, so that setting is realized. The pull rod is continuously pulled upwards by the setting power cylinder piston, after the releasing stop pin at the lower part of the pull rod upwards drives the releasing sleeve to move upwards, the inner hole at the lower part of the releasing sleeve releases the steel ball, so that the lifting joint is separated from the fishing head assembly, at the moment, the lifting pipe column together with the perforating gun, the electronic coding device and the setting power cylinder device is lifted out of a well mouth, and the operation of ejecting and blocking the connecting seat is completed.

The electronic coding technology controls the use steps of the set-plugging combined bidirectional well sealer as follows:

step one, hoisting a bidirectional well sealing device by using an operation derrick elevator and putting the bidirectional well sealing device into a well head sleeve;

hoisting the setting power cylinder device to enable the lower end of the setting power cylinder device to be aligned and connected with the upper end of the bidirectional well sealing device, then fastening the lower end of the setting power cylinder device with an upper connecting lifting head of the bidirectional well sealing device by using a pressing cap, and lowering an elevator to be seated on the upper end of a wellhead flange;

hoisting the electronic coding device to enable the lower end of the electronic coding device to be aligned with the upper end of the setting power cylinder device, butting and fastening a pressing cap at the lower end of the electronic coding device and an upper connector of the setting power cylinder device, and then lowering the elevator to be seated at the upper end of the wellhead flange;

fourthly, after 1 oil pipe is connected to the upper end of the electronic coding device, an elevator is placed to be seated on the upper end of the wellhead flange;

and fifthly, the lower end of the perforating gun is connected to the upper end of the oil pipe and then sequentially goes down the well to the perforating section.

The electronic coding control technology is used for replacing the conventional well plugging operation by lifting and releasing, is not influenced by various complex well conditions, can realize the accurate control of the setting of the well plugging device, and realizes the simple, quick and reliable well plugging. The well plugging device can be connected to the lower end of the perforating gun and goes down the well along with the perforating gun, so that perforating and well plugging combined operation is realized.

Claims

1. The utility model provides a two-way blowout preventer of penetrating stifled antithetical couplet of electronic coding technique control setting which characterized in that: the bidirectional blowout preventer consists of an electronic coding device (500), a setting power cylinder device (800) and a bidirectional blowout preventer device (100); an electronic coding device (500) for control of the downhole tool; the setting power cylinder device (800) is used for generating pressure by entering well fluid in an oil well casing into the setting power cylinder; the bidirectional blowout preventer device (100) is used for performing blowout prevention at a well position above a perforation section after perforation, so as to prevent oil from being ejected out of a well mouth after perforation; the bottom end of the electronic coding device (500) is connected with the top end of the setting power cylinder device (800), and the bottom end of the setting power cylinder device (800) is connected with the top end of the bidirectional blowout preventer device (100).

2. The electronic coding technology control setting ejection and plugging combined bidirectional blowout preventer as claimed in claim 1, wherein the electronic coding technology control setting ejection and plugging combined bidirectional blowout preventer comprises: the bidirectional blowout preventer device (100) comprises an upper lifting joint (1), a releasing sleeve (2), a pull rod (3), a releasing stop pin (4), a pull sleeve (5), a releasing shear pin seat (6), a releasing shear pin (7), a push rod head (8), an anti-drop shear pin (9), a push rod (10), a fishing head assembly (11), a first steel ball (12), a first steel ball sheath (13), a guide pin (14), a first steel ball sheath spring (15), an inner clamping tooth (16), an inner clamping tooth seat (17), a central pipe (18), an outer clamping tooth assembly (19), a second steel ball (20), a guide screw (21), a ball support (22), a second steel ball sheath spring (23), a second steel ball sheath spring (24), a lining pipe seat (25), a bolt (26), a rubber sleeve lining pipe (27), a rubber sleeve (28), a rubber sleeve spacer ring (29), a central rod (30), an upper cone (31), The device comprises a limit nail (32), an anchor tooth frame (33), an anchor tooth (34), a hoop spring (35), a lower cone (36), a tailstock (37) and a tailstock screw (38);

the upper lifting joint (1) is sleeved on the pull rod (3), the releasing sleeve (2) is sleeved on the upper lifting joint (1), the lower end of the pull rod (3) is installed on the pull sleeve (5), and the releasing stop pin (4) is installed on the pull rod (3); the lost-hand shear pin seat (6) is sleeved at the upper end of the central pipe (18), and the releasing shear pin (7) is arranged on the lost-hand shear pin seat (6); the push rod head (8) is arranged in a hole at the upper end of the central tube (18), and the lower end of the push rod head (8) is connected with the push rod (10); the anti-falling shear pin (9) is arranged in a threaded hole in the pipe wall of the central pipe (18), and the lower end of the push rod (10) is connected with the upper end of the ball support (22); the lower end of the central pipe (18) is connected with a central rod (30); the lower end of the fishing head assembly (11) is connected with the inner clamping tooth seat (17); the first steel ball (12) is arranged in a hole in the pipe wall of the upward lifting joint (1), the first steel ball sheath (13) is sleeved on the excircle at the lower end of the upward lifting joint (1), and the guide pin (14) is arranged in a threaded hole in the pipe wall at the lower end of the upward lifting joint (1); the first steel ball sheath spring (15) is arranged at the lower end of the first steel ball sheath (13); the inner clamping teeth (16) are arranged on the inner clamping tooth seat (17), and the lower end of the inner clamping tooth seat (17) is connected with the liner tube seat (25); the ball support (22) is arranged in a hole at the upper end of the central rod (30); the outer clamping tooth assembly (19) is sleeved at the upper end of the central rod (30), the second steel ball (20) is installed in a pipe wall hole at the upper end of the central rod (30), the guide screw (21) is installed in a pipe wall threaded hole at the upper end of the central rod (30), the second steel ball sheath (23) is sleeved at the upper end of the central rod (30), and the second steel ball sheath spring (24) is installed at the lower end of the second steel ball sheath (23); the lower end of the liner tube seat (25) is connected with a rubber sleeve liner tube (27) through a bolt (26), and the rubber sleeve liner tube (27) is sleeved on the central rod (30); the rubber cylinders (28) are sleeved on the rubber cylinder liner tube (27), and the rubber cylinder spacer ring (29) is arranged between two adjacent rubber cylinders (28); the lower end of the central rod (30) is in threaded connection with the tailstock (37); the upper cone (31) is sleeved on the rubber sleeve liner tube (27), the lower end of the upper cone (31) is connected with the anchor tooth frame (33) through a limiting nail (32), and the lower end of the anchor tooth frame (33) is connected with the lower cone (36) through the limiting nail (32); the anchor teeth (34) are arranged in the long holes in the pipe wall of the anchor tooth rack (33); the hoop spring (35) is sleeved in a semi-annular groove in the middle of the anchor tooth (34), and the tailstock (37) is installed on the lower cone (36) through a tailstock screw (38).

3. The electronic coding technology control setting ejection and plugging combined bidirectional blowout preventer as claimed in claim 1, wherein the electronic coding technology control setting ejection and plugging combined bidirectional blowout preventer comprises the following steps: the setting power cylinder device (800) comprises an upper connector (81), a cylinder sleeve ball seat (82), a sliding ball support (83), a steel ball (84), a steel ball retainer (85), a first cylinder sleeve (86), a limiting sleeve (87), an upper piston (88), an upper middle joint (89), a lower piston (90), a lower middle joint (91), a screw (92), an adjustable outer cylinder (93), an adjustable inner cylinder (94), a chuck assembly (95), a first lower pressing cap (96) and a second cylinder sleeve (97);

the upper connector (81) is in threaded connection with a cylinder sleeve ball seat (82), the cylinder sleeve ball seat (82) is connected with a cylinder sleeve (86), the sliding ball support (83) is sleeved on the upper connector (81), the steel ball (84) is installed in a hole of a steel ball retainer (85), the steel ball retainer (85) is installed on the upper connector (81) through threads, and the lower end of the first cylinder sleeve (86) is connected with an upper middle connector (89); the limiting sleeve (87) is sleeved on the upper connector (81), the upper piston (88) is connected with the lower end of the upper connector (81), the lower end of the upper piston (88) is connected with the lower piston (90) through an upper middle joint (89), the lower end of the upper middle joint (89) is connected with the second cylinder sleeve (97), and the lower end of the second cylinder sleeve (97) is connected with a lower middle joint (91); the lower end of the lower piston (90) is connected with a chuck assembly (95) through a lower middle joint (91), and the lower end of the lower middle joint (91) is connected with an adjustable outer cylinder (93); the screw (92) penetrates through a through hole of the adjustable outer cylinder (93) and then is installed in a threaded hole of the lower middle joint (91), the lower end of the adjustable outer cylinder (93) is connected with the adjustable inner cylinder (94), the lower end of the adjustable inner cylinder (94) is sleeved into a first lower pressing cap (96), and the first lower pressing cap (96) is sleeved on the adjustable inner cylinder.

4. The electronic coding technology control setting ejection and plugging combined bidirectional blowout preventer as claimed in claim 1, wherein the electronic coding technology control setting ejection and plugging combined bidirectional blowout preventer comprises the following steps: the electronic coding device (500) comprises a lower connector (51), an electromagnetic valve end seat (52), an electromagnetic valve outer cylinder (53), an electromagnetic valve (54), a filter screen (55), a first middle connector (56), a spring seat (57), a spring (58), a circuit board base (59), a circuit board outer cylinder (60), a second middle connector (61), a battery outer cylinder (62), a third middle connector (63), an upper circuit board outer cylinder (64), a switch gland (65), a fourth middle connector (66), a short connector (67), an upper connector (68) and a second lower pressing cap (69);

the lower connector (51) is connected with the electromagnetic valve end seat (52) through threads, the electromagnetic valve end seat (52) is connected with the electromagnetic valve outer cylinder (53) through threads, and the upper end of the electromagnetic valve outer cylinder (53) is connected with the first intermediate connector (56) through threads; the electromagnetic valve (54) is arranged in the electromagnetic valve outer cylinder (53); the filter screen (55) is sleeved on the first intermediate joint (56) through a screw in a semi-ring structure, the upper end of the first intermediate joint (56) is connected with the outer circuit board cylinder (60), the spring seat (57) is installed in the outer circuit board cylinder (60), the spring (58) is installed between the spring seat (57) and the circuit board base (59), and the circuit board base (59) is installed in the outer circuit board cylinder (60); the upper end of the circuit board outer cylinder (60) is in threaded connection with a second intermediate joint (61), the upper end of the second intermediate joint (61) is connected with a battery outer cylinder (62), the upper end of the battery outer cylinder (62) is connected with a third intermediate joint (63), the upper end of the third intermediate joint (63) is connected with an upper circuit board outer cylinder (64), and the upper end of the upper circuit board outer cylinder (64) is connected with a fourth intermediate joint (66); the switch gland (65) is installed in a threaded hole in the upper end of the third middle joint (63), the upper end of the fourth middle joint (66) is connected with a short circuit (67), and the upper end of the short circuit (67) is connected with an upper connector (68).