CN115110906B

CN115110906B - Oil pipe elevator for rotary coupling core clamping in minor overhaul operation of oil field and operation process

Info

Publication number: CN115110906B
Application number: CN202211030352.2A
Authority: CN
Inventors: 岳吉祥; 周扬理; 朱文玉; 商玉梅
Original assignee: Shandong Institute Of Petroleum And Chemical Engineering
Current assignee: Shandong Institute Of Petroleum And Chemical Engineering
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-11-01
Anticipated expiration: 2042-08-26
Also published as: CN115110906A

Abstract

The invention relates to the field of petroleum well workover equipment, in particular to an oil field minor overhaul operation rotary coupling core clamping oil pipe elevator and an operation process, and the technical scheme is as follows: the oil pipe elevator comprises an oil pipe elevator main body and a feeding mechanism, wherein a coupling clamping core is arranged in the middle of an oil pipe elevator shell, a sinking surface and the lower surface of an oil pipe coupling are adopted for supporting, so that self-locking of the oil pipe coupling is realized, a coupling clamping core supporting module is arranged on the lower part of the coupling clamping core, and during operation, the coupling clamping core is arranged on a coupling clamping core supporting body and is used for supporting a power module to open or close the supporting module; the shell is provided with a lower conical channel and a middle coupling core clamping channel. The beneficial effects are that: the coupling clamping core bearing module disclosed by the invention is opened and closed to realize the lowering and picking of the coupling clamping core seated on the coupling clamping core supporting body, the coupling clamping core rotates between the slips and the oil pipe elevator, the rotation operation of the double coupling clamping cores is realized, the damage caused by clamping an oil pipe body is avoided, and the operation efficiency and the safety of the oil pipe rod elevator are improved.

Description

Oil pipe elevator for rotary coupling core clamping in minor overhaul operation of oil field and operation process

Technical Field

The invention relates to the field of petroleum well workover operation equipment, in particular to a rotary coupling core clamping oil pipe elevator for minor workover operation in an oil field and an operation process.

Background

With the continuous development of oil and gas resources in China, most of the existing oil fields enter the middle and later stages of oil exploitation, and the well repairing task is heavier and heavier. According to statistics, more than 85% of oil field operations in China are minor repair operations, and in the minor repair operations, the work with the largest workload and the longest time consumption is tripping of a tubular column, which is divided into tubing tripping operation and sucker rod tripping operation. At the present stage, for the pipe rod lifting action, the double-lifting-clamp pipe rod string lifting operation process is generally adopted in China. Most operation processes of minor repair operation require wellhead workers to participate in manual labor, so that the working intensity of the wellhead workers is high, the operation environment is severe, the operation potential safety hazard is high, and the minor repair operation efficiency can be reduced accordingly.

Aiming at the problems, the working strength of well head workers is reduced as much as possible and the potential safety hazards of the well head workers are reduced on the premise of not influencing the working efficiency of minor repair operation, and the device is developed to form a 'one-hanging-one-clamping' mode.

The invention belongs to the patent family key technology of petroleum workover sucker rod operation equipment project, more than ten Chinese invention patents which are currently authorized by the team are closely related to realize the automatic operation of small pipes in oil fields. The invention is closely related to patent families such as Chinese patent ZL202011073476.X automatic elevator and using method of sucker rod for well workover in oil field, chinese patent ZL202011573843.2 automatic elevator and using method of sucker rod capable of realizing automatic alignment function, chinese patent ZL202011048977.2 well workover process for oil field for realizing automatic sucker rod, chinese patent ZL202011093257.8 power slip and operating process for double-petal jacking type well workover of sucker rod, chinese patent ZL010998186.X integrated guide type vertical operation well workover channel and using method for well head positioning, chinese patent ZL202110462646.1 integrated equipment and process for mechanical small workover operation of sucker rod based on vehicle-mounted well workover, chinese patent ZL202110792254.1 visual small mechanized small workover control system and method for master-slave type visual small workover, and the like, and the invention families complete automatic/mechanized operation of pipe rods together.

In addition, the invention patent number of the team application is ZL202111632553.5, the patent name is 'a rotary flange core minor repair sucker rod elevator and a use method', and a design method and an operation process of the rotary sucker rod elevator are provided.

Disclosure of Invention

The invention aims to provide a rotary coupling core-clamping oil pipe elevator for oilfield minor repair operation and an operation process, aiming at the defects in the prior art, the rotary coupling core-clamping oil pipe elevator replaces the operation of well head workers, realizes mechanical/automatic operation, does not need frequent plugging and unplugging of elevator pins and replacement of the elevator by workers under the condition of not changing the operation working condition, greatly reduces the working strength of the well head workers, reduces the operation potential safety hazard of the well head workers, and can improve the working efficiency of the well repair operation.

The invention provides a rotary coupling core-clamping oil pipe elevator for minor overhaul operation of an oil field, which adopts the technical scheme that: the oil pipe coupling clamping core supporting device comprises a base module, a clamping core supporting module, a shell module, a bearing module, an oil pipe coupling clamping core, a lock pin module, a guiding module, a control module, a pushing module and a feeding module, wherein the shell module is installed on the upper side of the base module, the clamping core supporting module is installed in the middle of the shell module, the oil pipe coupling clamping core supports an oil pipe, the oil pipe is installed in the middle of the shell module and slides in a guide groove in the shell module, and the shell module is internally provided with an oil pipe coupling clamping core working position and a standby position; the pushing module is positioned in a shell module on the upper part of the oil pipe coupling clamping core, the electromagnet is pushed to attract the oil pipe coupling clamping core, and the linear module pushes the oil pipe coupling clamping core to realize the conversion of the oil pipe coupling clamping core between a working position and a standby position; the clamping core supporting module and the bearing module are arranged on the lower portion of the clamping core of the tubing coupling and jointly support the clamping core of the tubing coupling, wherein the bearing module independently supports the clamping core of the tubing coupling when the oil pipe is lifted, and the clamping core supporting module supports the clamping core of the tubing coupling when the working condition of the bottom plate is stopped; the through screw rod stepping motor of the bearing module drives the coupling clamping core left supporting body and the coupling clamping core right supporting body to realize opening and closing, the coupling clamping core left supporting body and the coupling clamping core right supporting body bear the oil pipe coupling clamping core under the closing working condition, the oil pipe elevator ascends under the opening working condition, and the oil pipe coupling clamping core falls down from the middle of the coupling clamping core left supporting body and the coupling clamping core right supporting body, is separated from the shell module and is seated on the clamping core supporting module; the guide module is positioned right above the oil pipe coupling clamping core, and after the oil pipe enters the guide module from bottom to top, the oil pipe is guided into the central operation position by the oil pipe guide sleeve; the control module is positioned in the upper cavity of the shell module to realize the driving and control of the oil pipe elevator; the feeding module is arranged on the base module and positioned on the side surface of the tubing elevator, and is used for feeding the clamping core of the tubing coupling into and taking out the tubing elevator and the clamping core supporting module.

Preferably, the shell module comprises a supporting and adjusting bolt, a bottom proximity switch, an ultrasonic sensor, a bottom proximity switch mounting seat, an ultrasonic sensor mounting seat, a shell, a supporting and positioning block, a positioning block pin shaft, a hanging ring groove pin and an upper cover shell, wherein the bottom of the shell is provided with the supporting and adjusting bolt, the bottom proximity switch and the ultrasonic sensor, the bottom proximity switch is mounted on the bottom proximity switch mounting seat, and the bottom proximity switch mounting seat is fixed at the bottom of the shell; the middle of the shell is provided with a hole, and a bearing module, an oil pipe coupling clamping core, a pushing module and a lock pin module are sequentially arranged in the hole from bottom to top and are also provided with a sliding channel; the middle part of the shell is vertically an oil pipe coupling core clamping operation area, the lower part of the shell is a conical space, a core clamping support module is installed, and the upper part of the shell is a guide module for centering an oil pipe;

the bearing positioning block is a positioning surface for movement of a coupling clamping core left supporting body and a coupling clamping core right supporting body of the bearing module, and the bearing positioning block is positioned by a positioning block pin shaft; two rings groove symmetry are installed on the upper portion of casing for connect two rings of workover rig hook, rings groove pin is installed to rings groove outer end, and the upper cover shell is connected in the casing upper end, realizes that the casing module seals.

Preferably, the shell comprises an entry conical surface, a supporting surface, a working guide surface, a pushing surface, a guide mounting surface, a working position and a standby position, wherein the entry conical surface is of a conical structure, and the tubing coupling enters the guide surface; the supporting surface is a working surface of the bearing module; the working surface is a movable supporting working surface for the clamping core of the tubing coupling; the working guide surface is a contact surface with the oil pipe coupling clamping core, so that the oil pipe coupling clamping core is guided, and rotation is prevented; the pushing surface is a working surface of the pushing module and is also a mounting surface where the locking pin module is located; the guide mounting surface is used for mounting a guide module and is mounted in the middle; the working position and the standby position are two positions of the clamping core of the tubing coupling, wherein the working position is positioned in the center of the vertical axis of the tubing elevator.

Preferably, the bearing module consists of a through screw rod stepping motor, a coupling clamping core left support body, a coupling clamping core right support body, a coupling clamping core supporting plate and a motor mounting plate, wherein the coupling clamping core left support body and the coupling clamping core right support body form the coupling clamping core supporting body and support the oil pipe coupling clamping core together; the coupling clamping core supporting plate is connected to the side face of the coupling clamping core supporting body, is flush with the upper surface of the coupling clamping core supporting body and is used as an oil pipe coupling clamping core sliding supporting body to support the upper oil pipe coupling clamping core; the coupling clamping core left support body and the coupling clamping core right support body are combined to form an inner cone cavity corresponding to a cone formed by the clamping core support module; the coupling clamping core supporting plate is connected with and flushed with the coupling clamping core supporting body and is used for supporting the oil pipe coupling clamping core.

Preferably, the coupling clamping core of the tubing coupling consists of a coupling bearing surface, a bell mouth, a stroke positioning surface, a guide surface, a feeding electromagnet suction surface, a lock pin groove and a pushing electromagnet suction surface, wherein the coupling bearing surface of the coupling clamping core of the tubing coupling sinks to bear the tubing coupling, the sinking arc structure forms self-locking on the tubing coupling, the coupling lifts upwards, and the coupling clamping core of the tubing coupling is disengaged from the tubing; the front part of the oil pipe coupling clamping core is provided with a bell mouth, the two sides of the bell mouth are provided with lock pin grooves, and a stroke positioning surface is arranged on the bell mouth and used for enabling the oil pipe coupling clamping core to enter an oil pipe channel; the upper part of the oil pipe coupling clamping core is a feeding electromagnet suction surface which is a pushing electromagnet suction plane of the pushing module; the two sides of the oil pipe coupling clamping core are guide surfaces for preventing the oil pipe coupling clamping core from rotating; the back part of the oil pipe coupling clamping core is a feeding electromagnet suction surface which is a feeding electromagnet suction plane.

Preferably, the lock pin module comprises a support plate, a travel switch, a right push rod, an electric push rod, a positioning pin shaft, a rotating support pin shaft, a left push rod, a pin shaft, a lock plate connection, a lock plate and a sleeve, wherein the support plate is connected to the left support body of the coupling clamping core through a bolt; the electric push rod is a left push rod and right push rod opening and closing power mechanism and is connected with the left push rod and the right push rod through a pin shaft; the locking plate is connected and installed on the supporting plate, and the supporting plate is positioned and connected by rotating the supporting pin shaft and the positioning pin shaft; the locking plate is used for bearing the tubing coupling, and when the clamping core of the tubing coupling is in a working position, the locking plate is positioned in the horn mouth and is in contact with or close to the tubing, so that the locking plate and other parts of the clamping core of the tubing coupling form a bearing surface of the tubing coupling; the sleeve is arranged between the connection of the support plate and the locking plate and used for adjusting the installation height; the travel switch is arranged on the supporting plate, and when the oil pipe coupling clamping core is located at the working position, the travel positioning surface contacting the oil pipe coupling clamping core stops.

Preferably, the guide module consists of an oil pipe guide sleeve, a top ultrasonic sensor mounting seat and a top ultrasonic sensor, wherein a guide return opening at the lower part of the oil pipe guide sleeve is of an inverted cone structure and is mounted above a coupling clamping core left support body, and the oil pipe is guided to move upwards to a convergence opening at the position with the smallest inner diameter to realize centering of the coupling, so that the oil pipe is guided to be centered; the guide inlet at the upper part of the oil pipe guide sleeve is of a cone structure and guides the oil pipe coupling to return; the top ultrasonic sensor is installed on the top ultrasonic sensor installation seat.

Preferably, the pushing module comprises a pushing electromagnet, an electromagnet connecting plate, a spring shaft, a pushing support and a linear module, wherein the pushing electromagnet, the electromagnet connecting plate, the spring and the spring shaft form a floating electromagnetic attraction structure, the tubing coupling clamping core is attracted at a working position, and the tubing coupling clamping core is pushed to switch between the working position and a standby position; the floating electromagnetic attraction structure is slightly higher than the clamping core of the tubing coupling, and the clamping core of the tubing coupling pushes the electromagnet to pass through the floating electromagnetic attraction structure; the pushing power adopts a linear module, and the pushing electromagnet is pushed to attract the oil pipe coupling clamping core to switch between a working position and a standby position; the pushing support is of a frame structure, the linear module of the pushing module is installed, the linear module is in contact with the pushing surface and in contact with two end faces of the pushing surface to realize position fixing, the pushing support is connected to the outer end of the shell through bolts, and the shell can be integrally removed, so that the stroke of the pushing electromagnet can be adjusted by adjusting the linear module with the stroke switch.

Preferably, the feeding module comprises a guide linear bearing seat, a guide optical shaft, a thin hexagon nut, a feeding travel switch mounting seat, a feeding travel switch, a feeding box, a feeding electromagnet mounting seat, a side mounting plate, a feeding hydraulic cylinder, a pushing travel switch mounting seat, a mounting base plate, a pushing travel switch adjusting ring and a feeding hydraulic cylinder, so that the clamping core of the oil pipe coupling is fed into and taken out of the shell module;

the feeding module comprises two feeding moving mechanisms: firstly, the feeding hydraulic cylinder drives the guide optical axis to advance and retreat, so that the feeding box drives the oil pipe coupling clamping core to advance and retreat in a first stage; secondly, the feeding hydraulic cylinder drives the oil pipe coupling clamping core to realize second-stage advance and retreat through the feeding electromagnet;

the guide linear bearing seat, the guide optical axis, the thin hexagon nut, the feeding box, the side mounting plate, the mounting substrate and the feeding hydraulic cylinder form a first-stage driving and reversing mechanism; the two guide optical shafts are arranged in the guide linear bearing seats, the guide linear bearing seats and the feeding hydraulic cylinder are both arranged on the side mounting plate, the front ends of the guide optical shafts are connected with the feeding box, and the feeding hydraulic cylinder drives the feeding box to move forwards and backwards along the guide optical shafts; the guide optical axis is arranged on the guide linear bearing seat, and the front part of the guide optical axis is fixed by two thin hexagonal nuts to prevent the bolt from loosening;

the feeding box, the feeding electromagnet mounting seat and the feeding hydraulic cylinder form a second-stage advancing and retreating mechanism, so that the second-stage advancing and retreating of the clamping core of the oil pipe coupling is realized; a push travel switch adjusting ring is arranged at the rear end of the guide optical axis and used for adjusting and detecting the feeding distance of the feeding hydraulic cylinder; the feeding travel switch is arranged on the feeding travel switch mounting seat, and when the first-stage advancing and retreating mechanism contacts the shell, the feeding travel switch contacts to send a signal so as to control the feeding module to act; the guide linear bearing seat, the feeding hydraulic cylinder and the feeding electromagnet mounting seat of the feeding module are arranged on a side mounting plate, the side mounting plate is connected with a mounting substrate, and the mounting substrate is arranged on a bottom plate through bolts;

the side mounting plate is connected with the mounting base plate through a bolt, the side mounting plate is provided with an annular bolt groove, and the height of the side mounting plate and the height of the mounting base plate are adjustable, so that the height of the clamping core of the tubing coupling is adjustable, and the clamping core of the tubing coupling can be accurately sent to a standby position of the shell; the feeding electromagnet is arranged on the feeding electromagnet mounting seat and attracts the oil pipe coupling clamping core; the feeding box is connected with the hydraulic rod end of the feeding hydraulic cylinder, the rear end of the feeding box is connected with the mounting seat at the front end of the feeding hydraulic cylinder, the hydraulic rod of the feeding hydraulic cylinder is connected with the feeding electromagnet, and the feeding electromagnet is connected with and attracts the clamping core of the oil pipe coupling; the feeding electromagnet is installed on the feeding electromagnet installation seat, the feeding electromagnet installation seat is connected to a piston rod of the feeding hydraulic cylinder, the feeding hydraulic cylinder is installed at the rear part of the feeding box, the feeding hydraulic cylinder moves forward and backward in an attraction manner to drive the oil pipe coupling clamping core to move forward and backward, and deflection-free movement of the oil pipe coupling clamping core is achieved.

Preferably, the base module comprises a four-way connecting flange and a bottom plate, wherein the bottom plate is fixed on the upper side of the four-way connecting flange and is used for mounting and supporting the oil pipe elevator; the card core supporting module consists of a lower card core supporting body and an upper card core supporting body, and the upper part of the lower card core supporting body is provided with the upper card core supporting body.

The invention provides an operation process of a rotary coupling core-clamping oil pipe elevator for oilfield minor overhaul operation, which comprises an oil pipe descending operation process flow and an oil pipe lifting operation process flow:

the oil pipe feeding operation process flow comprises the following steps:

firstly, overturning the vertical catwalk to overturn the oil pipe to a vertical position on the center of a well mouth, wherein a coupling clamping core A is located at a standby position in a coupling clamping core channel of an oil pipe elevator shell, and a coupling clamping core B supports a lower oil pipe and is located on a clamping core supporting module;

the oil pipe elevator moves downwards, the oil pipe is sleeved into the oil pipe from top to bottom under the action of the oil pipe guide sleeve, and the oil pipe elevator stops moving forwards after the top ultrasonic sensor senses the oil pipe;

thirdly, the PLC controls the pushing module to act, the coupling clamping core A is driven to move forward from the standby position to the working position by pushing the electromagnet to suck until the oil pipe rod body is completely clamped, and meanwhile, the lock pin module is closed;

(IV) the tubing elevator ascends until the coupling clamping core A bears the rim surface of the tubing coupling;

(V) the oil pipe elevator descends until the lower end of the oil pipe is aligned with the lower oil pipe, and the oil pipe screwing-off tongs complete oil pipe screwing-on operation;

sixthly, stopping after the oil pipe elevator ascends in a small range, and taking out the coupling clamping core B by the feeding module;

(VII) the oil pipe elevator descends until the oil pipe elevator falls onto the coupling core support module, the lock pin module of the coupling core is opened at the moment, the bearing module is opened, the left coupling core support body and the right coupling core support body are separated until the coupling core can pass through the left coupling core support body and the right coupling core support body, the oil pipe elevator ascends, the coupling core A is left on the coupling core support module, and the coupling core A bears the oil pipe coupling;

(VIII) when the step (VII) is carried out, the feeding module sends the taken coupling clamping core B to a standby position in a coupling clamping core channel of the oil pipe elevator shell;

(ninth), in the process of ascending the tubing elevator, closing the left support body of the coupling clamping core and the right support body of the coupling clamping core, and lowering the next tubing by the tubing elevator;

and (ten) the bearing and lifting/descending operation of the oil pipe is realized through the rotation operation of the coupling clamping core A and the coupling clamping core B, and the operation is performed in a circulating manner, so that the rotation operation of the double coupling clamping cores is realized, and the operation of discharging the oil pipe is realized.

The oil pipe lifting operation process flow comprises the following steps:

a coupling clamping core A supports an oil pipe coupling to be seated on a clamping core supporting module, and a coupling clamping core B is positioned at a standby position in a coupling clamping core channel of an oil pipe elevator shell and is in a standby state;

secondly, the tubing elevator descends, the coupling clamping core bearing module is opened in the descending process, and the tubing elevator descends until the upper end of the clamping core supporting module (2) is higher than the lower end of the coupling clamping core A;

(III) closing the bearing module, closing the left coupling clamping core supporting body and the right coupling clamping core supporting body, and closing the coupling clamping core locking pin module;

fourthly, when the third step is carried out, the feeding module takes out the coupling clamping core B which is positioned at the standby position in the coupling clamping core channel, the coupling clamping core B is temporarily stored on the circulating feeding module, and the coupling clamping core B is in a waiting state;

(V) the tubing elevator ascends until the lower tubing coupling is exposed, and then the tubing elevator ascends for a certain distance;

feeding the coupling clamping core B in a waiting state onto the clamping core supporting module by the feeding module until the pipe body of the lower oil pipe is clamped;

(VII) the tubing elevator descends until the coupling core B clamps the coupling surface of the tubing and then stops descending;

(eighth), the turning vertical catwalk claws move upwards to flexibly clamp the rod body of the oil pipe, and the power tongs are used for screwing off to complete screwing off;

(ninth), the vertical type catwalk clamping jaw moves upwards to clamp the oil pipe rod body firmly, the oil pipe elevator moves downwards for a small distance, the coupling clamping core locking pin module is opened, and the linear module is pulled in by the pushing electromagnet of the pushing module to push the coupling clamping core A to a standby position in the coupling clamping core channel;

(ten) stopping the oil pipe elevator after the oil pipe elevator ascends and is separated from the oil pipe, and turning over the vertical catwalk to convey the oil pipe to a horizontal position; then the tubing elevator goes down to carry out the lifting operation of the next tubing, so as to realize the rotation operation of the coupling core clamping; the bearing and lifting/descending operation of the oil pipe are realized through the rotation operation of the coupling clamping core A and the coupling clamping core B, and the circulation is carried out, so that the rotation operation of the double coupling clamping cores is realized, and the oil pipe lifting operation is realized.

Compared with the prior art, the invention has the following beneficial effects:

the double-coupling core clamping core wheel rotating operation of the invention not only realizes the lifting operation of the oil pipe, but also plays the role of an oil pipe slip on the workbench, thereby realizing the traditional 'one lifting one clamping'; the sinking surface of the double-coupling clamping core is in contact with the tubing coupling, so that the bearing is realized, the effect of locking the tubing coupling is achieved, and the operation safety is improved; the lock pin module locks the coupling clamping core again, and the lock plate is as high as the coupling clamping core, so that the oil pipe coupling supporting operation is realized, the oil pipe coupling supporting capacity is enhanced, and the operation safety is further improved; the double-coupling-hoop clamping core wheel rotation operation of the invention is to support the coupling surface instead of clamping the oil pipe body, so as to avoid the damage to the oil pipe caused by clamping the oil pipe body by the various oil pipe slips through the clamping teeth; the pushing module realizes the core clamping of the coupling through electromagnetic attraction, accurate positioning is not needed, and the operation is efficient; the coupling clamping core advances and retreats under the guiding action, particularly under the action of the guide surface of the shell, so that the coupling clamping core is prevented from rotating, the entering conical surface of the coupling clamping core is ensured to be opposite to an oil pipe body, and the coupling clamping core is favorably supported after entering the oil pipe body; the coupling clamping core of the invention realizes bearing/separation of the coupling surface of the oil pipe by pushing the module, is similar to the existing manual oil pipe elevator, and improves the operation safety and the operation efficiency.

Drawings

FIG. 1 is an overall front view of the present invention;

FIG. 2 is an overall top view of the present invention;

FIG. 3 is a front view of the base module of the present invention;

FIG. 4 is a top view of the base module of the present invention;

FIG. 5 is a front view of a card core support module of the present invention

FIG. 6 is a front view of a lower cartridge support body of the cartridge support module of the present invention;

FIG. 7 is a top view of a lower cartridge support of the cartridge support module of the present invention;

FIG. 8 is a front view of the housing module of the present invention;

FIG. 9 is a front view of the housing module housing of the present invention;

FIG. 10 is a sectional view of the housing module housing of the present invention;

figure 11 is a schematic view of the construction of the bearer module of the invention;

FIG. 12 is a top view of the tubing collar core of the present invention;

figure 13 is a front view of the tubing coupling cartridge of the present invention;

FIG. 14 is a cross-sectional view of a tubing coupling cartridge of the present invention;

FIG. 15 is a top view of the latch pin module of the present invention;

FIG. 16 is a front cross-sectional view of the latch module of the present invention;

FIG. 17 is a front view of the guide module of the present invention;

FIG. 18 is a front cross-sectional view of a guide module tubing guide sleeve of the present invention;

FIG. 19 is a front view of the push module of the present invention;

FIG. 20 is a top plan view of the control module of the present invention;

FIG. 21 is a front view of a feeder module of the present invention;

in the upper diagram: the device comprises a base module 1, a clamping core supporting module 2, a shell module 3, a bearing module 4, an oil pipe coupling clamping core 5, a locking pin module 6, a guide module 7, a control module 8, a pushing module 9 and a feeding module 10;

a four-way connecting flange 1.1 and a bottom plate 1.2;

a lower core support body 2.1 and an upper core support body 2.2;

the device comprises a supporting adjusting bolt 3.1, a bottom proximity switch 3.2, an ultrasonic sensor 3.3, a bottom proximity switch mounting seat 3.4, an ultrasonic sensor mounting seat 3.5, a shell 3.6, a supporting positioning block 3.7, a positioning block pin shaft 3.8, a lifting ring groove 3.9, a lifting ring groove pin 3.10 and an upper cover shell 3.11;

the device comprises an entrance conical surface 3.6.1, a support surface 3.6.2, a working surface 3.6.3, a working guide surface 3.6.4, a pushing surface 3.6.5, a guide installation surface 3.6.6, a working position 3.6.7 and a standby position 3.6.8;

a through screw rod stepping motor 4.1, a coupling clamping core left support body 4.2, a coupling clamping core right support body 4.3, a coupling clamping core supporting plate 4.4 and a motor mounting plate 4.5;

a coupling bearing surface 5.1, a bell mouth 5.2, a stroke positioning surface 5.3, a guide surface 5.4, a feeding electromagnet suction surface 5.5, a lock pin groove 5.6 and a pushing electromagnet suction surface 5.7;

the device comprises a support plate 6.1, a travel switch 6.2, a right push rod 6.3, an electric push rod 6.4, a positioning pin shaft 6.5, a rotary support pin shaft 6.6, a left push rod 6.7, a pin shaft 6.8, a locking plate connection 6.9, a locking plate 6.10 and a sleeve 6.11;

the oil pipe guide sleeve is 7.1, the top ultrasonic sensor mounting base is 7.2, the top ultrasonic sensor is 7.3, the guide inlet is 7.1.1, the electromagnet feeding inlet is 7.1.2, the mounting lug plate is 7.1.3, the convergence opening is 7.1.4, and the guide return opening 7.1.5;

the radio frequency device comprises a radio frequency device mounting seat 8.1, a radio frequency device 8.2, a power supply 8.3, a power supply box body 8.4, a linear module driver 8.5, a screw rod stepping motor driver 8.6, a guide rail 8.7 and a PLC controller 8.8;

the device comprises a push electromagnet 9.1, an electromagnet connecting plate 9.2, a spring 9.3, a spring shaft 9.4, a push bracket 9.5 and a linear module 9.6;

the device comprises a guide linear bearing seat 10.1, a guide optical axis 10.2, a thin hexagon nut 10.3, a feeding travel switch mounting seat 10.4, a feeding travel switch 10.5, a feeding box 10.6, a feeding electromagnet 10.7, a feeding electromagnet mounting seat 10.8, a side mounting plate 10.9, a feeding hydraulic cylinder 10.10, a pushing travel switch 10.11, a pushing travel switch mounting seat 10.12, a mounting base plate 10.13, a pushing travel switch adjusting ring 10.14 and a feeding hydraulic cylinder 10.15.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Embodiment 1, with reference to fig. 1-2, the oilfield minor overhaul operation rotary coupling clamping core tubing elevator provided by the present invention comprises a base module 1, a clamping core supporting module 2, a housing module 3, a bearing module 4, a tubing coupling clamping core 5, a lock pin module 6, a guide module 7, a control module 8, a pushing module 9, and a feeding module 10, wherein the housing module 3 is installed on the upper side of the base module 1, the clamping core supporting module 2 is installed in the middle of the housing module 3, the tubing coupling clamping core 5 supports a tubing, is installed in the middle of the housing module 3, and slides in a guide groove in the housing module 3, and a working position 3.6.7 and a standby position 3.6.8 of the tubing coupling clamping core 5 are provided in the housing module 3; the pushing module 9 is positioned in the shell module 3 at the upper part of the tubing coupling clamping core 5, the electromagnet 9.1 is pushed to suck the tubing coupling clamping core 5, and the linear module 9.6 pushes the tubing coupling clamping core 5 to realize the conversion of the tubing coupling clamping core 5 between the working position 3.6.7 and the standby position 3.6.8; the clamping core supporting module 2 and the bearing module 4 are arranged at the lower part of the tubing coupling clamping core 5 and jointly support the tubing coupling clamping core 5, wherein the bearing module 4 independently supports the tubing coupling clamping core 5 under the working condition of lifting the tubing, and the clamping core supporting module 2 supports the tubing coupling clamping core 5 under the working condition of stopping the bottom plate 1.2; the through screw rod stepping motor 4.1 of the bearing module 4 drives the coupling clamping core left support body 4.2 and the coupling clamping core right support body 4.3 to realize opening and closing, when the working condition is closed, the coupling clamping core left support body 4.2 and the coupling clamping core right support body 4.3 bear the oil pipe coupling clamping core 5, when the working condition is opened, the oil pipe elevator ascends, the oil pipe coupling clamping core 5 falls down from the middle of the coupling clamping core left support body 4.2 and the coupling clamping core right support body 4.3, and the housing module 3 is separated from the housing and is seated on the clamping core support module 2; the guide module 7 is positioned right above the oil pipe coupling clamping core 5, and after the oil pipe enters the guide module 7 from bottom to top, the oil pipe is guided into a central operation position by the oil pipe guide sleeve 7.1; the control module 8 is positioned in the upper cavity of the shell module 3 to realize the driving and control of the oil pipe elevator; the feeding module 10 is installed on the base module 1 and is positioned on the side surface of the tubing elevator, and is used for feeding the tubing coupling clamping core 5 into and taking out the tubing elevator and the clamping core supporting module 2.

Referring to fig. 8-10, the housing module 3 of the present invention includes a supporting adjusting bolt 3.1, a bottom proximity switch 3.2, an ultrasonic sensor 3.3, a bottom proximity switch mounting seat 3.4, an ultrasonic sensor mounting seat 3.5, a housing 3.6, a bearing positioning block 3.7, a positioning block pin shaft 3.8, a lifting ring groove 3.9, a lifting ring groove pin 3.10 and an upper cover housing 3.11, wherein the bottom of the housing 3.6 is provided with the supporting adjusting bolt 3.1, the bottom proximity switch 3.2 and the ultrasonic sensor 3.3, the bottom proximity switch 3.2 is mounted on the bottom proximity switch mounting seat 3.4, and the bottom proximity switch mounting seat 3.4 is fixed at the bottom of the housing 3.6; the middle of the shell 3.6 is provided with a hole, and a bearing module 4, an oil pipe coupling clamping core 5, a pushing module 9 and a lock pin module 6 are sequentially arranged in the hole from bottom to top and are also provided with a sliding channel; the middle part of the shell 3.6 is a working area of the oil pipe coupling clamping core 5 in the vertical direction, the lower part of the shell is a conical space, the clamping core supporting module 2 is installed, and the upper part of the shell is a guide module 7 for realizing the centering of an oil pipe;

the bearing positioning block 3.7 is a positioning surface for movement of the coupling clamping core left supporting body 4.2 and the coupling clamping core right supporting body 4.3 of the bearing module 4, and the positioning block pin shaft 3.8 realizes positioning of the bearing positioning block 3.7; two lifting ring grooves 3.9 are symmetrically arranged on the upper part of the shell 3.6 and are used for connecting two lifting rings of a workover rig hook, a lifting ring groove pin 3.10 is arranged at the outer end of the lifting ring groove 3.9, and an upper cover shell 3.11 is connected to the upper end of the shell 3.6, so that the shell module 3 is sealed.

Referring to fig. 9, the shell 3.6 of the present invention comprises an entry cone 3.6.1, a support surface 3.6.2, a working surface 3.6.3, a working guide surface 3.6.4, a thrust surface 3.6.5, a guide mounting surface 3.6.6, a working position 3.6.7 and a standby position 3.6.8, wherein the entry cone 3.6.1 is a cone structure and a tubing collar enters the guide surface; the supporting surface 3.6.2 is a working surface of the bearing module 4; the working surface 3.6.3 is a movable supporting working surface of the tubing coupling clamping core 5; the working guide surface 3.6.4 is a contact surface with the guide surface 5.4 of the oil pipe coupling clamping core 5, so that the oil pipe coupling clamping core 5 is guided, and rotation is prevented; the pushing surface 3.6.5 is a working surface of the pushing module 9 and is also a mounting surface where the locking pin module 6 is located; the guide installation surface 3.6.6 is used for installing the guide module 7 and is installed in the middle; the operating position 3.6.7 and the standby position 3.6.8 are two positions of the tubing collar mandrel 5, where the operating position 3.6.7 is centered on the tubing elevator vertical axis.

Referring to fig. 11, the bearing module 4 of the present invention is composed of a through screw rod stepping motor 4.1, a coupling core clamping left support body 4.2, a coupling core clamping right support body 4.3, a coupling core clamping support plate 4.4 and a motor mounting plate 4.5, wherein the coupling core clamping left support body 4.2 and the coupling core clamping right support body 4.3 constitute a coupling core clamping support body, which jointly support an oil pipe coupling core 5, the through screw rod stepping motor 4.1 is connected and drives the coupling core clamping support body to move left and right in a housing 3.6, and the coupling core clamping left support body 4.2 and the coupling core clamping right support body 4.3 are spliced into a whole; the coupling clamping core supporting plate 4.4 is connected to the side face of the coupling clamping core supporting body, is flush with the upper face of the coupling clamping core supporting body and is used as an oil pipe coupling clamping core 5 sliding supporting body to support the oil pipe coupling clamping core 5 on the upper face; the left coupling clamping core supporting body 4.2 and the right coupling clamping core supporting body 4.3 are combined to form an inner cone cavity corresponding to a cone formed by the clamping core supporting module 2; the coupling chuck core supporting plate 4.4 is connected with the coupling chuck core supporting body and is flush with the coupling chuck core supporting body, and is used for supporting the tubing coupling chuck core 5.

Referring to fig. 12-14, the tubing coupling chuck 5 of the present invention is composed of a coupling bearing surface 5.1, a bell mouth 5.2, a stroke positioning surface 5.3, a guide surface 5.4, a feeding electromagnet suction surface 5.5, a lock pin groove 5.6 and a pushing electromagnet suction surface 5.7, wherein the coupling bearing surface 5.1 of the tubing coupling chuck 5 sinks to bear the tubing coupling, and the sinking arc structure forms self-locking to the tubing coupling, the coupling lifts, and the tubing coupling chuck 5 disengages from the tubing; the front part of the oil pipe coupling clamping core 5 is provided with a bell mouth 5.2, two sides of the bell mouth 5.2 are provided with unlocking pin grooves 5.6, and a stroke positioning surface 5.3 is arranged on the bell mouth 5.2 and is used for enabling the oil pipe coupling clamping core 5 to enter an oil pipe channel; the upper part of the oil pipe coupling clamping core 5 is a feeding electromagnet suction surface 5.5 which is a push electromagnet 9.1 suction plane of a push module 9; two sides of the oil pipe coupling clamping core 5 are provided with guide surfaces 5.4 for preventing the oil pipe coupling clamping core 5 from rotating; the back part of the oil pipe coupling clamping core 5 is a feeding electromagnet suction surface 5.5 and a feeding electromagnet suction plane 10.7.

Referring to fig. 15-16, the lock pin module 6 of the invention is composed of a support plate 6.1, a travel switch 6.2, a right push rod 6.3, an electric push rod 6.4, a positioning pin 6.5, a rotary supporting pin 6.6, a left push rod 6.7, a pin 6.8, a locking plate connection 6.9, a locking plate 6.10 and a sleeve 6.11, wherein the support plate 6.1 is connected on the left support body 4.2 of the collar clamp core through a bolt, the left push rod 6.7, the right push rod 6.3 and the electric push rod 6.4 form a lever structure, the electric push rod 6.4 pushes the left push rod 6.7 and the right push rod 6.3 to open and close by taking the rotary supporting pin 6.6 as a fulcrum, and further drives the front end lock pins of the left push rod 6.7 and the right push rod 6.3 to be clamped into the lock pin groove 5.6; the electric push rod 6.4 is a power opening and closing mechanism of the left push rod 6.7 and the right push rod 6.3 and is connected with the left push rod 6.7 and the right push rod 6.3 through a pin shaft 6.8; the locking plate connection 6.9 is arranged on the support plate 6.1, and the support plate 6.1 is positioned and connected by rotating the support pin 6.6 and the positioning pin 6.5; the locking plate 6.10 is used for supporting the tubing coupling, when the tubing coupling clamping core 5 is in the working position 3.6.7, the locking plate 6.10 is positioned in the bell mouth 5.2 and is in contact with or close to the tubing, and the purpose that the locking plate and other parts of the tubing coupling clamping core 5 form a tubing coupling bearing surface is achieved; the sleeve 6.11 is arranged between the support plate 6.1 and the locking plate connection 6.9 and used for adjusting the installation height; the travel switch 6.2 is arranged on the support plate 6.1, and stops contacting with a travel positioning surface 5.3 of the tubing coupling clamping core 5 when the tubing coupling clamping core 5 is in a working position 3.6.7.

Referring to fig. 17-18, the guide module 7 of the present invention is composed of an oil pipe guide sleeve 7.1, a top ultrasonic sensor mounting seat 7.2 and a top ultrasonic sensor 7.3, wherein a guide return port 7.1.5 at the lower part of the oil pipe guide sleeve 7.1 is an inverted cone structure and is mounted above a coupling core clamping left support body 4.2, and guides an oil pipe to move upward to a convergence port 7.1.4 at the minimum inner diameter position to realize centering of the coupling, and further guides centering of the oil pipe; the guide inlet 7.1.1 at the upper part of the oil pipe guide sleeve 7.1 is of a cone structure and guides the oil pipe coupling to return; the top ultrasonic sensor 7.3 is arranged on the top ultrasonic sensor mounting seat 7.2; the outer wall of the oil pipe guide sleeve 7.1 is provided with a mounting lug plate 7.1.3, and the lower side of the oil pipe guide sleeve 7.1 is provided with an electromagnet feeding inlet 7.1.2.

Referring to fig. 19, the pushing module 9 of the present invention includes a pushing electromagnet 9.1, an electromagnet connecting plate 9.2, a spring 9.3, a spring shaft 9.4, a pushing bracket 9.5 and a linear module 9.6, where the pushing electromagnet 9.1, the electromagnet connecting plate 9.2, the spring 9.3 and the spring shaft 9.4 form a floating electromagnetic attraction structure, attract the tubing collar clamp core 5 at a working position 3.6.7, and push the tubing collar clamp core 5 to switch between the working position 3.6.7 and a standby position 3.6.8; the floating electromagnetic attraction structure is slightly higher than the clamping core 5 of the tubing coupling, so that the clamping core 5 of the tubing coupling is allowed to pass through the floating electromagnetic attraction structure, and the push electromagnet 9.1 is allowed to pass through; the pushing power adopts a linear module 9.6, and the pushing electromagnet 9.1 is pushed to attract the tubing collar clamp core 5 to switch between a working position 3.6.7 and a standby position 3.6.8; the pushing support 9.5 is of a frame structure, the linear module 9.6 of the pushing module 9 is installed, the linear module is in contact with the pushing surface 3.6.5 and in contact with two end faces of the pushing surface 3.6.5 to achieve position fixing, the pushing support 9.5 is connected to the outer end of the shell 3.6 through bolts, and the shell 3.6 can be integrally removed, so that the linear module 9.6 is convenient to adjust the stroke of the pushing electromagnet 9.1 by virtue of a stroke switch.

Referring to fig. 20, the control module 8 of the present invention includes a radio frequency device mounting base 8.1, a radio frequency device 8.2, a power supply 8.3, a power supply box 8.4, a linear module driver 8.5, a screw rod stepping motor driver 8.6, a guide rail 8.7 and a PLC controller 8.8, and realizes the control of the oil pipe elevator except for the feeding module 10;

the control module 8 of the tubing elevator provides a master-slave mode of control, which is well known in the prior art and will not be described in detail; the PLC controller 8.8 receives the main controller of the automatic well repairing equipment through the radio frequency device 8.2 and controls the oil pipe elevator except the feeding module 10 to work. The method specifically comprises the following steps: receiving various sensor models, controlling the linear module driver 8.5, the two screw rod stepping motor drivers 8.6, the pushing electromagnet 9.1, the feeding electromagnet 10.7, the electric push rod 6.4 and other executing parts to work, and further realizing the whole work of the oil pipe elevator; the linear module driver 8.5 drives the linear module 9.6 to work; the screw rod stepping motor driver 8.6 drives the through screw rod stepping motor 4.1 to work; the power supply 8.3 is arranged in the power supply box body 8.4 and provides power for the oil pipe elevator; control module 8 installs in casing 3.6 upper portion casing, and wherein 8.2 receiving antenna of radio frequency ware need stretch out casing 3.6 through the slant downthehole, avoid electromagnetic shield, and the slant downthehole prevents or reduces rainwater and dust entering.

Referring to fig. 21, the feeding module 10 of the present invention includes a guiding linear bearing seat 10.1, a guiding optical axis 10.2, a thin hexagon nut 10.3, a feeding travel switch mounting seat 10.4, a feeding travel switch 10.5, a feeding box 10.6, a feeding electromagnet 10.7, a feeding electromagnet mounting seat 10.8, a side mounting plate 10.9, a feeding hydraulic cylinder 10.10, a pushing travel switch 10.11, a pushing travel switch mounting seat 10.12, a mounting base plate 10.13, a pushing travel switch adjusting ring 10.14 and a feeding hydraulic cylinder 10.15, so as to realize feeding the oil pipe coupling clamping core 5 into and taking out of the housing module 3;

the feeding module 10 includes two feeding moving mechanisms: firstly, the feeding hydraulic cylinder 10.15 drives the guide optical axis 10.2 to advance and retreat, and then the feeding box 10.6 drives the oil pipe coupling clamping core 5 to advance and retreat in the first stage; secondly, the feeding hydraulic cylinder 10.10 drives the oil pipe coupling clamping core 5 to advance and retreat in a second stage through the feeding electromagnet 10.7;

the guide linear bearing seat 10.1, the guide optical axis 10.2, the thin hexagon nut 10.3, the feeding box 10.6, the side mounting plate 10.9, the mounting base plate 10.13 and the feeding hydraulic cylinder 10.15 form a first-stage advancing and retreating mechanism; the two guide optical shafts 10.2 are arranged in the guide linear bearing seat 10.1, the guide linear bearing seat 10.1 and the feeding hydraulic cylinder 10.15 are both arranged on the side mounting plate 10.9, the front end of the guide optical shaft 10.2 is connected with the feeding box 10.6, and the feeding hydraulic cylinder 10.15 drives the feeding box 10.6 to advance and retreat along the guide optical shaft 10.2; the guide optical axis 10.2 is arranged on a guide linear bearing seat 10.1, and the front part of the guide optical axis is fixed by two thin hexagon nuts 10.3 to prevent the bolt from loosening;

the feeding box 10.6, the feeding electromagnet 10.7, the feeding electromagnet mounting seat 10.8 and the feeding hydraulic cylinder 10.10 form a second-stage advancing and retreating mechanism, so that the second-stage advancing and retreating of the oil pipe coupling clamping core 5 are realized; a push travel switch adjusting ring 10.14 is arranged at the rear end of the guide optical axis 10.2 and used for adjusting and detecting the feeding distance of a feeding hydraulic cylinder 10.15; the feeding travel switch 10.5 is arranged on the feeding travel switch mounting seat 10.4, and when the first-stage advancing and retreating mechanism contacts the shell 3.6, the feeding travel switch 10.5 contacts and sends a signal to further control the feeding module 10 to act; the guide linear bearing seat 10.1, the feeding hydraulic cylinder 10.10 and the feeding electromagnet mounting seat 10.8 of the feeding module 10 are arranged on a side mounting plate 10.9, the side mounting plate 10.9 is connected with a mounting substrate 10.13, and the mounting substrate 10.13 is arranged on a bottom plate 1.2 through bolts;

the side mounting plate 10.9 is connected with the mounting base plate 10.13 through bolts, the side mounting plate 10.9 is provided with annular bolt grooves, and the height of the side mounting plate 10.9 and the height of the mounting base plate 10.13 are adjustable, so that the height of the oil pipe coupling clamping core 5 is adjustable, and the oil pipe coupling clamping core 5 can be accurately conveyed to the standby position 3.6.8 of the shell 3.6; the feeding electromagnet 10.7 is arranged on the feeding electromagnet mounting seat 10.8 and used for attracting the oil pipe coupling clamping core 5; the feeding box 10.6 is connected with a hydraulic rod end of a feeding hydraulic cylinder 10.10, the rear end of the feeding box 10.6 is connected with a mounting seat at the front end of a feeding hydraulic cylinder 10.15, the hydraulic rod of the feeding hydraulic cylinder 10.15 is connected with a feeding electromagnet 10.7, and the feeding electromagnet 10.7 is connected with a suction oil pipe coupling clamping core 5; the feeding electromagnet 10.7 is installed on a feeding electromagnet installation seat 10.8, the feeding electromagnet installation seat 10.8 is connected to a piston rod of a feeding hydraulic cylinder 10.10, the feeding hydraulic cylinder 10.10 is installed at the rear part of a feeding box 10.6, and the feeding hydraulic cylinder 10.10 is attracted to advance and retreat to drive the oil pipe coupling clamping core 5 to advance and retreat so as to realize the non-deflection advance and retreat of the oil pipe coupling clamping core 5.

Referring to fig. 3-4, the base module 1 of the invention comprises a four-way connecting flange 1.1 and a bottom plate 1.2, wherein the bottom plate 1.2 is fixed on the upper side of the four-way connecting flange 1.1 and is used for installing and supporting an oil pipe elevator; referring to fig. 6-8, the core support module 2 is composed of a lower core support body 2.1 and an upper core support body 2.2, and the upper core support body 2.2 is arranged on the upper portion of the lower core support body 2.1.

The specific operation process comprises the following steps:

the tubing elevator operation process is described below using tubing as an example, and to facilitate understanding of the process, coupling core a and coupling core B are set to show differences:

firstly, turning over the vertical catwalk to turn over the oil pipe to the vertical position on the center of a well head, wherein a coupling clamping core A is located at a standby position 3.6.8 in a coupling clamping core channel of an oil pipe elevator shell 3.6, and a coupling clamping core B supports the lower oil pipe to be located on a clamping core supporting module 2;

the two oil pipe elevators move downwards, the oil pipe is sleeved into the oil pipe from top to bottom under the action of the oil pipe guide sleeve 7.1, and the oil pipe elevators stop advancing after the top ultrasonic sensor 7.3 senses the oil pipe;

the three PLC controllers 8.8 control the pushing module 9 to act, the collar clamping core A is driven to advance to a working position 3.6.7 from a standby position 3.6.8 by pulling the pushing electromagnet 9.1 in an attracting mode until the oil pipe rod body is completely clamped, and meanwhile the lock pin module 6 is closed;

the four tubing elevators ascend until the coupling clamping core A supports the edge surface of the tubing coupling;

the five oil pipe elevator descends until the lower end of the oil pipe is aligned with the lower oil pipe, and the oil pipe screwing-on and unscrewing pincers complete the oil pipe screwing-on operation;

stopping the six-oil pipe elevator after ascending in a small amplitude, and taking out the coupling clamping core B by the feeding module 10;

the seven oil pipe elevators move downwards until the seven oil pipe elevators fall onto the clamping core supporting module 2, the locking pin module 6 of the coupling clamping core is opened at the moment, the bearing module 4 is opened, the coupling clamping core left supporting body 4.2 and the coupling clamping core right supporting body 4.3 are separated until the coupling clamping core can pass through the coupling clamping core left supporting body 4.2 and the coupling clamping core right supporting body 4.3, the oil pipe elevators ascend, the coupling clamping core A is left on the clamping core supporting module 2, and the coupling clamping core A bears the oil pipe coupling;

eighthly, when the step seven is carried out, the feeding module 10 sends the taken coupling clamping core B to the standby position 3.6.8 in the coupling clamping core channel of the tubing elevator shell 3.6;

in the ascending process of the nine-oil pipe elevator, the left support body 4.2 of the coupling clamping core and the right support body 4.3 of the coupling clamping core are closed, and the oil pipe elevator performs the lowering operation of the next oil pipe;

and tenthly, the bearing and lifting/descending operation of the oil pipe is realized through the rotation operation of the coupling clamping core A and the coupling clamping core B, and the operation is carried out in a circulating manner, so that the rotation operation of the double coupling clamping cores is realized, and the operation of discharging the oil pipe is realized.

The following describes the process flow of the oil pipe elevator operation by taking an oil pipe as an example:

a coupling core A bears an oil pipe coupling and sits on the core support module 2, and a coupling core B is positioned at a standby position 3.6.8 in a coupling core channel of an oil pipe elevator shell 3.6 and is in a standby state;

the second oil pipe elevator descends, the coupling clamping core bearing module 4 is opened in the descending process, and the oil pipe elevator descends until the upper end of the clamping core supporting module 2 is higher than the lower end of the coupling clamping core A;

the third bearing module 4 is closed, the left coupling clamping core supporting body 4.2 and the right coupling clamping core supporting body 4.3 are closed, and meanwhile, the coupling clamping core lock pin module 6 is closed;

fourthly, when the third step is carried out, the feeding module 10 takes out the coupling clamping core B which is positioned at the standby position of 3.6.8 in the coupling clamping core channel, the coupling clamping core B is temporarily stored on the circulating feeding module 10, and the coupling clamping core B is in a waiting state;

the five-oil pipe elevator ascends until the lower oil pipe coupling is exposed, and then ascends for a certain distance;

the six feeding modules 10 feed the coupling clamping core B in a waiting state onto the clamping core supporting module 2 until a pipe body of a lower oil pipe is clamped;

the seven tubing elevators descend until the coupling clamping core B clamps the coupling surface of the tubing and then stop descending;

the eight-turn vertical catwalk clamping jaws move upwards to flexibly clamp the rod body of the oil pipe, and the power tongs for screwing off are screwed off to complete screwing off;

the nine-turn vertical catwalk jack catches up to firmly clamp the oil pipe rod body, the oil pipe elevator descends for a short distance, the coupling clamping core lock pin module 6 is opened, and the linear module 9.6 pulls the coupling clamping core A to a standby position 3.6.8 in the coupling clamping core channel through the pulling electromagnet 9.1 of the pulling module 9;

stopping the ten-oil pipe elevator after the ten-oil pipe elevator ascends and disengages from the oil pipe, and turning over the vertical catwalk to convey the oil pipe to a horizontal position; then the tubing elevator goes downwards to carry out the lifting operation of the next tubing, so as to realize the rotation operation of the coupling core clamping; the bearing and lifting/descending operation of the oil pipe are realized through the rotation operation of the coupling clamping core A and the coupling clamping core B, and the circulation is carried out, so that the rotation operation of the double coupling clamping cores is realized, and the oil pipe lifting operation is realized.

The coupling clamping core 5, the guide sleeve and the like are adjusted in size, so that the requirement of oil pipe operation in a series of sizes is met.

The invention is mainly designed for the automatic operation of the oil pipe and is suitable for the operation of the sucker rod.

The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, the technical solution according to the present invention is subject to corresponding simple modifications or equivalent changes, as far as the scope of the present invention is claimed.

Claims

1. The utility model provides an oil field minor overhaul operation wheel coupling card core oil pipe elevator, includes base module (1), characterized by: the oil pipe coupling clamping device is characterized by further comprising a clamping core supporting module (2), a shell module (3), a bearing module (4), an oil pipe coupling clamping core (5), a lock pin module (6), a guide module (7), a control module (8), a pushing module (9) and a feeding module (10), wherein the shell module (3) is installed on the upper side of the base module (1), the clamping core supporting module (2) is installed in the middle of the shell module (3), the oil pipe coupling clamping core (5) supports an oil pipe and is installed in the middle of the shell module (3) and slides in a guide groove in the shell module (3), and a working position (3.6.7) and a standby position (3.6.8) of the oil pipe coupling clamping core (5) are arranged in the shell module (3); the pushing module (9) is positioned in the shell module (3) at the upper part of the tubing coupling clamping core (5), the electromagnet (9.1) is pushed to attract the tubing coupling clamping core (5), and the linear module (9.6) pushes the tubing coupling clamping core (5) to realize the conversion of the tubing coupling clamping core (5) between a working position (3.6.7) and a standby position (3.6.8); the clamping core supporting module (2) and the bearing module (4) are arranged on the lower portion of the tubing coupling clamping core (5) to jointly support the tubing coupling clamping core (5), wherein the bearing module (4) independently supports the tubing coupling clamping core (5) under the working condition of lifting the tubing, and the clamping core supporting module (2) supports the tubing coupling clamping core (5) under the working condition of stopping the bottom plate (1.2); a through screw rod stepping motor (4.1) of the bearing module (4) drives a coupling clamping core left supporting body (4.2) and a coupling clamping core right supporting body (4.3) to realize opening and closing, when the working condition is closed, the coupling clamping core left supporting body (4.2) and the coupling clamping core right supporting body (4.3) bear the oil pipe coupling clamping core (5), when the working condition is opened, the oil pipe elevator ascends, and the oil pipe coupling clamping core (5) falls down from the middle of the coupling clamping core left supporting body (4.2) and the coupling clamping core right supporting body (4.3) and is separated from the shell module (3) and is seated on the clamping core supporting module (2); the guide module (7) is positioned right above the oil pipe coupling clamping core (5), and after the oil pipe enters the guide module (7) from bottom to top, the oil pipe is guided into a central operation position by the oil pipe guide sleeve (7.1); the control module (8) is positioned in the upper cavity of the shell module (3) to realize the driving and control of the oil pipe elevator; the feeding module (10) is arranged on the base module (1) and is positioned on the side surface of the tubing elevator, and the tubing coupling clamping core (5) is sent into and taken out of the tubing elevator and the clamping core supporting module (2).

2. The oilfield small repair operation rotary coupling core-clamping tubing elevator as defined in claim 1, wherein: the shell module (3) comprises a supporting and adjusting bolt (3.1), a bottom proximity switch (3.2), an ultrasonic sensor (3.3), a bottom proximity switch mounting seat (3.4), an ultrasonic sensor mounting seat (3.5), a shell (3.6), a bearing positioning block (3.7), a positioning block pin shaft (3.8), a lifting ring groove (3.9), a lifting ring groove pin (3.10) and an upper cover shell (3.11), wherein the bottom of the shell (3.6) is provided with the supporting and adjusting bolt (3.1), the bottom proximity switch (3.2) and the ultrasonic sensor (3.3), the bottom proximity switch (3.2) is mounted on the bottom proximity switch mounting seat (3.4), and the bottom proximity switch mounting seat (3.4) is fixed at the bottom of the shell (3.6); the middle of the shell (3.6) is provided with a hole, and a bearing module (4), an oil pipe coupling clamping core (5), a pushing module (9) and a lock pin module (6) are sequentially arranged in the hole from bottom to top and are also provided with a sliding channel; the middle part of the shell (3.6) is a working area of the oil pipe coupling clamping core (5) in the vertical direction, the lower part of the shell is a conical space, the clamping core supporting module (2) is installed, and the upper part of the shell is a guide module (7) for centering an oil pipe;

the bearing positioning block (3.7) is a positioning surface for movement of a coupling clamping core left supporting body (4.2) and a coupling clamping core right supporting body (4.3) of the bearing module (4), and the positioning block pin shaft (3.8) realizes positioning of the bearing positioning block (3.7); two lifting ring grooves (3.9) are symmetrically arranged on the upper part of the shell (3.6) and used for connecting two lifting rings of the workover rig hook, lifting ring groove pins (3.10) are arranged at the outer ends of the lifting ring grooves (3.9), and the upper cover shell (3.11) is connected to the upper end of the shell (3.6) to seal the shell module (3).

3. The oilfield small repair operation rotary coupling core-clamping tubing elevator as defined in claim 2, wherein: the shell (3.6) comprises an entry conical surface (3.6.1), a supporting surface (3.6.2), a working surface (3.6.3), a working guide surface (3.6.4), a pushing surface (3.6.5), a guide mounting surface (3.6.6), a working position (3.6.7) and a standby position (3.6.8), wherein the entry conical surface (3.6.1) is of a conical structure, and a tubing coupling enters the guide surface; the supporting surface (3.6.2) is a working surface of the bearing module (4); the working surface (3.6.3) is a movable supporting working surface of the tubing coupling clamping core (5); the working guide surface (3.6.4) is a contact surface with a guide surface (5.4) of the tubing coupling clamping core (5), so that the tubing coupling clamping core (5) is guided, and the rotation is prevented; the pushing surface (3.6.5) is a working surface of the pushing module (9) and is also an installation surface where the locking pin module (6) is located; the guide mounting surface (3.6.6) is used for mounting the guide module (7) and is mounted in the middle; the working position (3.6.7) and the standby position (3.6.8) are two positions of the tubing coupling mandrel (5), wherein the working position (3.6.7) is centered on the vertical axis of the tubing elevator.

4. The oilfield small repair operation rotary coupling core-clamping tubing elevator as defined in claim 3, wherein: the bearing module (4) consists of a through screw rod stepping motor (4.1), a coupling clamping core left support body (4.2), a coupling clamping core right support body (4.3), a coupling clamping core supporting plate (4.4) and a motor mounting plate (4.5), the coupling clamping core left support body (4.2) and the coupling clamping core right support body (4.3) form a coupling clamping core supporting body to jointly support the oil pipe coupling clamping core (5),

the through screw rod stepping motor (4.1) is connected with and drives the coupling clamping core supporting body to move left and right in the shell (3.6), and the coupling clamping core left supporting body (4.2) and the coupling clamping core right supporting body (4.3) are spliced into a whole; the coupling clamping core supporting plate (4.4) is connected to the side face of the coupling clamping core supporting body, is flush with the upper face of the coupling clamping core supporting body and is used as an oil pipe coupling clamping core (5) sliding supporting body to support the oil pipe coupling clamping core (5) on the upper face; the left support body (4.2) of the coupling clamping core and the right support body (4.3) of the coupling clamping core are combined to form an inner cone cavity corresponding to a cone formed by the clamping core support module (2); the coupling clamping core supporting plate (4.4) is connected with and flushed with the coupling clamping core supporting body and used for supporting the oil pipe coupling clamping core (5).

5. The oilfield short haul operation rotary coupling core-clamping tubing elevator as claimed in claim 4, wherein: the oil pipe coupling clamping core (5) consists of a coupling bearing surface (5.1), a bell mouth (5.2), a stroke positioning surface (5.3), a guide surface (5.4), a feeding electromagnet suction surface (5.5), a lock pin groove (5.6) and a pushing electromagnet suction surface (5.7), wherein the coupling bearing surface (5.1) of the oil pipe coupling clamping core (5) sinks to bear an oil pipe coupling, the sinking arc structure forms self-locking on the oil pipe coupling, the coupling lifts, and the oil pipe coupling clamping core (5) is disengaged from an oil pipe; the front part of the oil pipe coupling clamping core (5) is provided with a bell mouth (5.2), two sides of the bell mouth (5.2) are provided with unlocking pin grooves (5.6), and a stroke positioning surface (5.3) is arranged on the bell mouth (5.2) and used for enabling the oil pipe coupling clamping core (5) to enter an oil pipe channel; the upper part of the oil pipe coupling clamping core (5) is a feeding electromagnet suction surface (5.5) which is a push electromagnet (9.1) suction plane of a push module (9); the two sides of the oil pipe coupling clamping core (5) are provided with guide surfaces (5.4) for preventing the oil pipe coupling clamping core (5) from rotating; the back part of the oil pipe coupling clamping core (5) is a feeding electromagnet suction surface (5.5) which is a feeding electromagnet (10.7) suction plane.

6. The oilfield short haul operation rotary coupling core-clamping tubing elevator as claimed in claim 5, wherein: the lockpin module (6) consists of a support plate (6.1), a travel switch (6.2), a right push rod (6.3), an electric push rod (6.4), a positioning pin shaft (6.5), a rotary support pin shaft (6.6), a left push rod (6.7), a pin shaft (6.8), a locking plate connection (6.9), a locking plate (6.10) and a sleeve (6.11), wherein the support plate (6.1) is connected to the left support body (4.2) of the coupling clamping core through a bolt, the left push rod (6.7), the right push rod (6.3) and the electric push rod (6.4) form a lever structure, the electric push rod (6.4) pushes the left push rod (6.7) and the right push rod (6.3) to open and close by taking the rotary support pin shaft (6.6) as a fulcrum, and further drives the front end locking pins of the left push rod (6.7) and the right push rod (6.3) to be clamped into a locking pin groove (5.6.6); the electric push rod (6.4) is a power mechanism for opening and closing the left push rod (6.7) and the right push rod (6.3) and is connected with the left push rod (6.7) and the right push rod (6.3) through a pin shaft (6.8); the locking plate connection (6.9) is arranged on the support plate (6.1), and the support plate (6.1) is positioned and connected by rotating the support pin shaft (6.6) and the positioning pin shaft (6.5); the locking plate (6.10) is used for supporting the tubing coupling, when the tubing coupling clamping core (5) is located at a working position (3.6.7), the locking plate (6.10) is located in the bell mouth (5.2) and is in contact with or close to the tubing, and the purpose that the locking plate and other parts of the tubing coupling clamping core (5) form a tubing coupling bearing surface is achieved; the sleeve (6.11) is arranged between the support plate (6.1) and the locking plate connection (6.9) and is used for adjusting the installation height; the travel switch (6.2) is arranged on the support plate (6.1), and when the tubing coupling clamping core (5) is located at the working position (3.6.7), the travel positioning surface (5.3) contacting the tubing coupling clamping core (5) stops.

7. The oilfield small repair operation rotary coupling core-clamping tubing elevator as defined in claim 6, wherein: the guide module (7) consists of an oil pipe guide sleeve (7.1), a top ultrasonic sensor mounting seat (7.2) and a top ultrasonic sensor (7.3), a guide return opening (7.1.5) at the lower part of the oil pipe guide sleeve (7.1) is of an inverted cone structure and is mounted above a coupling core clamping left supporting body (4.2), and an oil pipe is guided to move upwards to a convergence opening (7.1.4) at the position with the minimum inner diameter to realize coupling centering so as to guide the oil pipe to be centered; the guide inlet (7.1.1) at the upper part of the oil pipe guide sleeve (7.1) is of a cone structure and guides the oil pipe coupling to return; the top ultrasonic sensor (7.3) is mounted on the top ultrasonic sensor mounting seat (7.2).

8. The oilfield short haul operation rotary coupling core-clamping tubing elevator as claimed in claim 7, wherein: the oil pipe collar clamping core is characterized in that the pushing module (9) comprises a pushing electromagnet (9.1), an electromagnet connecting plate (9.2), a spring (9.3), a spring shaft (9.4), a pushing support (9.5) and a linear module (9.6), the pushing electromagnet (9.1), the electromagnet connecting plate (9.2), the spring (9.3) and the spring shaft (9.4) form a floating electromagnetic suction structure, the oil pipe collar clamping core (5) is sucked at a working position (3.6.7), and the oil pipe collar clamping core (5) is pushed to be switched between the working position (3.6.7) and a standby position (3.6.8); the floating electromagnetic attraction structure is slightly higher than the clamping core (5) of the tubing coupling, and the clamping core (5) of the tubing coupling pushes the electromagnet (9.1) to pass through the floating electromagnetic attraction structure; the pushing power adopts a linear module (9.6), and the pushing electromagnet (9.1) is pushed to attract the tubing collar clamp core (5) to switch between a working position (3.6.7) and a standby position (3.6.8); the pushing support (9.5) is of a frame structure, a linear module (9.6) of the pushing module (9) is installed, the linear module is in contact with a pushing face (3.6.5) and is in contact with two end faces of the pushing face (3.6.5) to achieve position fixing, the pushing support (9.5) is connected to the outer end of the shell (3.6) through bolts, and the shell (3.6) can be integrally removed, so that the stroke of the pushing electromagnet (9.1) can be adjusted by conveniently adjusting the linear module (9.6) with a stroke switch.

9. The oilfield small repair operation rotary coupling core-clamping tubing elevator as defined in claim 8, wherein: the feeding module (10) comprises a guiding linear bearing seat (10.1), a guiding optical axis (10.2), a thin hexagon nut (10.3), a feeding travel switch mounting seat (10.4), a feeding travel switch (10.5), a feeding box (10.6), a feeding electromagnet (10.7), a feeding electromagnet mounting seat (10.8), a side mounting plate (10.9), a feeding hydraulic cylinder (10.10), a pushing travel switch (10.11), a pushing travel switch mounting seat (10.12), a mounting substrate (10.13), a pushing travel switch adjusting ring (10.14) and a feeding hydraulic cylinder (10.15), so that the oil pipe coupling clamping core (5) is fed into and taken out of the shell module (3) is realized;

the feeding module (10) comprises two feeding moving mechanisms: firstly, a feeding hydraulic cylinder (10.15) drives a guide optical axis (10.2) to advance and retreat, and then a feeding box (10.6) drives an oil pipe coupling clamping core (5) to advance and retreat in a first stage; secondly, the feeding hydraulic cylinder (10.10) drives the oil pipe coupling clamping core (5) to realize second-stage advance and retreat through the feeding electromagnet (10.7);

the guide linear bearing seat (10.1), the guide optical axis (10.2), the thin hexagon nut (10.3), the feeding box (10.6), the side mounting plate (10.9), the mounting base plate (10.13) and the feeding hydraulic cylinder (10.15) form a first-stage advancing and retreating mechanism; the two guide optical axes (10.2) are arranged in a guide linear bearing seat (10.1), the guide linear bearing seat (10.1) and the feeding hydraulic cylinder (10.15) are both arranged on a side mounting plate (10.9), the front end of the guide optical axis (10.2) is connected with a feeding box (10.6), and the feeding hydraulic cylinder (10.15) drives the feeding box (10.6) to advance and retreat along the guide optical axis (10.2); the guide optical axis (10.2) is arranged on a guide linear bearing seat (10.1), and the front part of the guide optical axis is fixed by two thin hexagonal nuts (10.3) to prevent the bolt from loosening;

the feeding box (10.6), the feeding electromagnet (10.7), the feeding electromagnet mounting seat (10.8) and the feeding hydraulic cylinder (10.10) form a second-stage advancing and retreating mechanism, so that the second-stage advancing and retreating of the oil pipe coupling clamping core (5) is realized; a push travel switch adjusting ring (10.14) is arranged at the rear end of the guide optical axis (10.2) and used for adjusting and detecting the feeding distance of the feeding hydraulic cylinder (10.15); the feeding travel switch (10.5) is arranged on the feeding travel switch mounting seat (10.4), and when the first-stage advancing and retreating mechanism contacts the shell (3.6), the feeding travel switch (10.5) contacts and sends a signal to control the feeding module (10) to act; a guide linear bearing seat (10.1), a feeding hydraulic cylinder (10.10) and a feeding electromagnet mounting seat (10.8) of the feeding module (10) are arranged on a side mounting plate (10.9), the side mounting plate (10.9) is connected with a mounting base plate (10.13), and the mounting base plate (10.13) is arranged on a bottom plate (1.2) through bolts;

the side mounting plate (10.9) is connected with the mounting base plate (10.13) through bolts, the side mounting plate (10.9) is provided with an annular bolt groove, the height of the side mounting plate (10.9) and the height of the mounting base plate (10.13) are adjustable, and therefore the height of the oil pipe coupling clamping core (5) is adjustable, and the oil pipe coupling clamping core (5) can be accurately conveyed to a standby position (3.6.8) of the shell (3.6); the feeding electromagnet (10.7) is arranged on the feeding electromagnet mounting seat (10.8) and attracts the oil pipe coupling clamping core (5); the feeding box (10.6) is connected with the hydraulic rod end of the feeding hydraulic cylinder (10.10), the rear end of the feeding box (10.6) is connected with the front end mounting seat of the feeding hydraulic cylinder (10.15), the hydraulic rod of the feeding hydraulic cylinder (10.15) is connected with the feeding electromagnet (10.7), and the feeding electromagnet (10.7) is connected with the suction oil pipe coupling clamping core (5); the feeding electromagnet (10.7) is installed on a feeding electromagnet installation seat (10.8), the feeding electromagnet installation seat (10.8) is connected to a piston rod of a feeding hydraulic cylinder (10.10), the feeding hydraulic cylinder (10.10) is installed at the rear part of a feeding box (10.6), the feeding hydraulic cylinder (10.10) moves forward and backward to attract and drive an oil pipe coupling clamping core (5) to move forward and backward, and the oil pipe coupling clamping core (5) can move forward and backward without deflection.

10. The process of claim 9, wherein the rotary coupling core-clamping tubing elevator comprises: the method comprises the following steps of a tubing running operation process flow and a tubing lifting operation process flow:

the process flow of the oil pipe descending operation comprises the following steps:

firstly, overturning the vertical catwalk to overturn the oil pipe to a vertical position on the center of a wellhead, wherein a coupling clamping core A is located at a standby position (3.6.8) in a coupling clamping core channel of an oil pipe elevator shell (3.6), and a coupling clamping core B supports the lower oil pipe and is located on a clamping core supporting module (2);

(II) the oil pipe elevator moves downwards, the oil pipe is sleeved into the oil pipe from top to bottom under the action of the oil pipe guide sleeve (7.1), and the oil pipe elevator stops moving forwards after the top ultrasonic sensor (7.3) senses the oil pipe;

thirdly, the PLC controller (8.8) controls the pushing module (9) to act, the collar clamp core A is driven to advance to a working position (3.6.7) from a standby position (3.6.8) by pulling the pushing electromagnet (9.1) until the oil pipe rod body is completely clamped, and meanwhile, the lock pin module (6) is closed;

sixthly, stopping after the oil pipe elevator ascends in a small range, and taking out the coupling clamping core B by the feeding module (10);

(VII) the tubing elevator descends until the tubing elevator falls onto the clamping core supporting module (2), at the moment, the lock pin module (6) of the coupling clamping core is opened, the bearing module (4) is opened, the left coupling clamping core supporting body (4.2) and the right coupling clamping core supporting body (4.3) are separated until the coupling clamping core can pass through the left coupling clamping core supporting body (4.2) and the right coupling clamping core supporting body (4.3), the tubing elevator ascends, the coupling clamping core A is left on the clamping core supporting module (2), and the coupling clamping core A bears the tubing coupling;

(VIII) when the step (VII) is carried out, the feeding module (10) sends the taken coupling clamping core B to a standby position (3.6.8) in a coupling clamping core channel of the tubing elevator shell (3.6);

(ninth), in the ascending process of the oil pipe elevator, the left support body (4.2) of the coupling clamping core and the right support body (4.3) of the coupling clamping core are closed, and the oil pipe elevator performs the lowering operation of the next oil pipe;

the bearing and lifting/descending operation of the oil pipe are realized through the rotation operation of the coupling clamping core A and the coupling clamping core B, and the operation is performed in a circulating manner, so that the rotation operation of the double coupling clamping cores is realized, and the oil pipe descending operation is realized;

the oil pipe lifting operation process flow comprises the following steps:

a coupling clamping core A bears an oil pipe coupling and is seated on a clamping core supporting module (2), and a coupling clamping core B is positioned at a standby position (3.6.8) in a coupling clamping core channel of an oil pipe elevator shell (3.6) and is in a standby state;

(II) the tubing elevator descends, the coupling clamping core bearing module (4) is opened in the descending process, and the tubing elevator descends until the upper end of the clamping core supporting module (2) is higher than the lower end of the coupling clamping core A;

(III) closing the bearing module (4), closing the coupling clamping core left supporting body (4.2) and the coupling clamping core right supporting body (4.3), and closing the coupling clamping core lock pin module (6) at the same time;

fourthly, when the third step is carried out, the feeding module (10) takes out the coupling clamping core B which is positioned at the standby position (3.6.8) in the coupling clamping core channel, the coupling clamping core B is temporarily stored on the circulating feeding module (10), and the coupling clamping core B is in a waiting state;

feeding the coupling clamping core B in a waiting state onto the clamping core supporting module (2) by the feeding module (10) until a pipe body of a lower oil pipe is clamped;

(VIII), enabling the clamping jaw of the turnover vertical catwalk to move upwards to flexibly clamp the rod body of the oil pipe, and screwing up and screwing down the power tongs to complete screwing down;

(nine) turning over the vertical catwalk jack catch to go up and firmly clamp the oil pipe rod body, the oil pipe elevator goes down for a short distance, the coupling clamping core lock pin module (6) is opened, and the linear module (9.6) pulls in and pushes the coupling clamping core A to a standby position (3.6.8) in the coupling clamping core channel through a pushing electromagnet (9.1) of the pushing module (9);

(ten) stopping after the oil pipe elevator ascends to separate from the oil pipe, and turning over the vertical catwalk to convey the oil pipe to a horizontal position; then the tubing elevator goes down to carry out the lifting operation of the next tubing, so as to realize the rotation operation of the coupling core clamping; the bearing and lifting/descending operation of the oil pipe are realized through the rotation operation of the coupling clamping core A and the coupling clamping core B, and the circulation is carried out, so that the rotation operation of the double coupling clamping cores is realized, and the oil pipe lifting operation is realized.