CN115628019A - Split type clamping device for sucker rod for workover treatment and use method - Google Patents
Split type clamping device for sucker rod for workover treatment and use method Download PDFInfo
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- CN115628019A CN115628019A CN202211629365.1A CN202211629365A CN115628019A CN 115628019 A CN115628019 A CN 115628019A CN 202211629365 A CN202211629365 A CN 202211629365A CN 115628019 A CN115628019 A CN 115628019A
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- Prior art keywords
- elevator
- split
- sucker rod
- slip
- slips
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
- E21B19/06—Elevators, i.e. rod- or tube-gripping devices
- E21B19/07—Slip-type elevators
Abstract
The invention relates to the technical field of oil field workover treatment, in particular to a split type clamping device of a sucker rod for workover treatment and a using method thereof. The technical scheme is as follows: two fixed direction wire rope in both sides of upper portion positioning seat, direction wire rope's lower extreme is fixed at the lower part fixing base of well head downside, and the direction slide is installed on two direction wire rope, and the elevator is held tightly to the direction slide, and the elevator adopts open elevator, and the slips adopts open slips, and beneficial effect is: the split elevator is driven by the guide sliding seat to move up and down along the guide steel wire rope, so that the centering and centering are realized, and the situation of position deviation is not easy to occur; the split elevator forms the contraction action of the first jaw and the second jaw by pushing the driving disc to rotate for a certain angle, so as to clamp the sucker rod; the split slips move towards the clamp body by pushing the slip sliding table, so that the coupling at the end part of the sucker rod is squat between the slip sliding table and the clamp body, and the bearing effect on the sucker rod in the well is realized.
Description
Technical Field
The invention relates to the technical field of oil field workover treatment, in particular to a split type clamping device of a sucker rod for workover treatment and a using method thereof.
Background
When the well head of the oil field well repairing machine is operated, the well head hoisting operation machine is adopted, which is used in the oil extraction process and is used for lifting the sucker rod out of the well head or putting the sucker rod into the well head. Although many automatic devices are being developed, due to the complexity of the operation site and the variability of the actual working conditions, in practical applications, the hoisting tool does not achieve the target, and the hoisting tool still needs to be operated under the condition that an operator participates in the whole process. Moreover, the existing sucker rod hoisting equipment has the displacement phenomenon, and the elevator is driven by the big hook, so that the position deviation is easy to occur.
In addition, the Chinese patent application number is CN201910770948.8, the patent name is 'automatic elevator for barrel well repair', the elevator comprises an elevator part and a driving part, and the elevator part consists of a left tongue and a right tongue; wherein: the rear part of the left tongue is connected with a left shaft sleeve; the left shaft sleeve is connected with a left sector gear; the rear part of the right tongue is connected with the right shaft sleeve; the right shaft sleeve is connected with a right sector gear; the left sector gear is meshed with the right sector gear; a straight gear is connected on the left or right shaft sleeve; the driving part comprises a pilot driving mechanism linked with the tongue and a reciprocating driving mechanism linked with the straight gear.
The Chinese patent number of the company application is CN202011073476.X, the patent name is 'an automatic elevator of oil field workover sucker rod and a use method', the upper part of a large bevel gear is meshed with a small bevel gear, the lower part of the large bevel gear drives a jaw, and a stepping motor drives a plurality of jaws to advance and retreat through the transmission of the small bevel gear and the large bevel gear; the inductive sensor is arranged on the lower surface of the elevator box body; the elevator box body is arranged on a lifting ring through a lifting hook, and the elevator end cover is connected with the elevator box body through a bolt.
The automatic elevator performs the automatic clamping and releasing functions to some extent, but in practical applications, the structure of the gear engagement may be jammed, and thus, an improved scheme is still needed.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a split clamping device for a sucker rod for workover treatment and a using method thereof.
The invention provides a split type clamping device of a sucker rod for workover treatment, which adopts the technical scheme that: the well mouth clamping device comprises a big hook, a lifting rope, an elevator and slips, wherein the lower end of the big hook is connected with the elevator through the lifting rope, and the well mouth is provided with the slips; the split elevator comprises an explosion-proof electric control box, a power cylinder pushing device, a buffering support, an opening and closing pull pin, an elevator body, a first clamping jaw, a second clamping jaw and a driving disc, wherein the power cylinder pushing device is arranged above the elevator body, the buffering support is arranged on the outer side of the power cylinder pushing device, the explosion-proof electric control box is arranged on the upper portion of the buffering support, the rear end of the power cylinder pushing device is connected with the elevator body through a movable connecting seat, the front end of an output shaft of the power cylinder pushing device is in matched contact with the opening and closing pull pin, the opening and closing pull pin is arranged on the upper surface of the driving disc, and the driving disc is pushed to rotate for a certain angle through the power cylinder pushing device; the elevator comprises an elevator body, and is characterized in that two groups of first clamping jaws and two groups of second clamping jaws are arranged on the lower side of the middle part of the elevator body, shift rods are arranged at the tops of the first clamping jaws and the second clamping jaws respectively, the shift rods are inserted into driving grooves formed in a driving disc, and when the driving disc rotates, the shift rods arranged in the driving grooves drive the first clamping jaws and the second clamping jaws to move along the driving grooves to form contraction or expansion, so that the sucker rods are clamped or loosened.
Preferably, a lower bearing is arranged between the lower side of the outer wall of the driving disc and the inner wall of the elevator body, a cushion block is arranged on the upper portion of the driving disc, an upper cover plate is arranged on the upper portion of the cushion block, an upper bearing is arranged between the upper cover plate and the cushion block, an elevator shell is arranged outside the elevator body, and lifting lugs are arranged at two ends of the elevator body.
Preferably, foretell to open slips includes slips base, slips slip table, pusher dog, the pincers body, pneumatic cylinder, first clamping jaw, second clamping jaw, one side of slips base is equipped with the slips slip table, and the opposite side is equipped with the pincers body, the outside of slips slip table is equipped with the pneumatic cylinder, and the output through the pneumatic cylinder promotes the slips slip table and slides along the slips base, the right-hand member middle part of slips slip table is equipped with first clamping jaw and second clamping jaw, and the right-hand member middle part of first clamping jaw and second clamping jaw is equipped with the sucker rod groove of business turn over, the left side of the pincers body is equipped with the recess of installation pusher dog, the middle part of pusher dog is through the upper surface connection of round pin axle with the recess.
Preferably, the upper part of the slip sliding table is provided with a working table surface, sliding table pressing plates are respectively arranged below two sides of the slip base, dust scraping plates are arranged on the tracks on two sides of the slip base and are fixedly connected with the slip sliding table, and the dust scraping plates are driven by the movement of the slip sliding table to scrape impurities on the tracks on two sides of the slip base; and a position detection device is arranged on the outer side of the clamp body.
Preferably, foretell pusher dog includes that first pusher dog end, second pusher dog end, spacing arch, round pin axle and pusher dog main part are dialled to first pusher dog end, the other end of pusher dog main part are equipped with second pusher dog end that circular structure, one side that the second was dialled the claw end is equipped with spacing arch for with the sucker rod business turn over groove of first clamping jaw and second clamping jaw cooperate, the centre of pusher dog main part is equipped with the round pin axle.
Preferably, foretell direction slide includes slide rail connector, slide rail cover, slide rail support arm, slide rail commentaries on classics round pin, elevator staple bolt, connecting bolt, switching round pin, the pole that opens and shuts, the elevator staple bolt is connected through switching round pin and connecting bolt by two semicircular rings, two slide rail support arms of slide rail commentaries on classics round pin swing joint are respectively passed through to the both sides of elevator staple bolt, and are equipped with slide rail connector respectively in the outer end of every slide rail support arm, are equipped with the slide rail cover in the slide rail connector respectively, direction wire rope inserts in the slide rail cover.
Preferably, one side of one group of sliding rail supporting arms is provided with an opening and closing sleeve with an arc-shaped structure, one side of the other group of sliding rail supporting arms is provided with an opening and closing rod with an arc-shaped structure, and the opening and closing rod is inserted into the opening and closing sleeve.
Preferably, the first jaw comprises a jaw body, an arc-shaped jaw slot and a shifting lever, the arc-shaped jaw slot is formed in one side of the jaw body and used for being matched with the sucker rod, the shifting lever is fixedly connected to the top of the jaw body, and the shifting lever is inserted into the four driving slots in the driving disc.
Preferably, the four driving grooves are arranged at intervals, each driving groove is of an arc groove structure, each driving groove is arranged in an involute shape from inside to outside, and the shifting rod is driven to move within a limited range along the driving grooves to form contraction or expansion of the first clamping jaw and the second clamping jaw.
The invention provides a using method of a split type clamping device of a sucker rod for workover treatment, which comprises the following steps:
1. before well site workover construction, an upper positioning seat is fixed on an upper cross beam of a workover rig derrick; the upper end of the guide steel wire rope is connected to the upper positioning seat and then penetrates through a sliding rail sleeve on the guide sliding seat, the lower end of the guide steel wire rope is connected to a lower fixing seat, and the lower fixing seat is fixed at a casing head below a well head; adjusting the angles and positions of the upper positioning seat and the lower fixing seat according to the position relation between the split elevator and the sucker rod, hoisting the split elevator by using a big hook, moving up and down, and confirming the sliding righting effect of the guide sliding seat and the guide steel wire rope;
2. when a sucker rod needs to be put into a wellhead, the hook is used for driving the split elevator and the guide sliding seat to be lifted to a proper height along the guide steel wire rope to hover, the split elevator is opened, the driving disc is pushed to rotate for 20-40 degrees through the power cylinder pushing device, the deflector rod arranged in the driving groove drives the first jaw and the second jaw to move inwards along the driving groove to form a contraction action, the sucker rod is clamped, then the hook descends downwards, the lower end of the sucker rod is put on the split slips at the wellhead, the slip table is pushed to move towards the caliper body through the output end of the hydraulic cylinder, the left side of the caliper body is provided with a pusher dog, the slip table pushes a first pusher dog end of the pusher dog, the second pusher dog end rotates outwards around the pin shaft, the sucker rod is pushed to enter the sucker rod inlet and outlet grooves of the first jaw and the second jaw, and centering action with the sucker rod in the well is realized; continuing to carry out the upper buckling operation, after the sucker rod is connected with the sucker rod in the well, opening the split slips, operating the large hook to lower the sucker rod into the well, then closing the split slips to support the sucker rod in the well, then opening the split elevator, driving the split elevator and the guide sliding seat to move upwards by the large hook to return to the hovering position, and completing the lowering cycle of one sucker rod;
3. when the sucker rod needs to be hung out of a well mouth, the split type elevator is driven to downwards reach the working table surface of the split type slips in an opened state, the split type elevator is driven, the first clamping jaw and the second clamping jaw clamp the sucker rod in the well, then the big hook drives the sucker rod to ascend, the split type slips are opened at the same time, and when the next coupling of the sucker rod leaves the split type slips for a certain distance, the split type slips are driven to close, so that the falling action of the sucker rod is limited; then the split elevator slowly descends to enable the lower sucker rod to sit and squat on the working table surface of the split slip; and then carrying out the tripping operation to separate the two sucker rods, opening the split elevator and ascending to return to the hovering position, removing the separated sucker rods, and completing the operation cycle of hoisting one sucker rod out.
The invention has the beneficial effects that:
firstly, the split elevator is driven by the guide sliding seat to move up and down along the guide steel wire rope through the adjustment of the opening and closing sleeve and the opening and closing rod on the guide sliding seat, so that the split elevator and the central point of a wellhead can be conveniently centered and centered, the elevator is driven by the big hook, and the situation of position deviation is not easy to occur;
secondly, the split elevator pushes the driving disc to rotate for a certain angle through the power cylinder pushing device, and the deflector rod arranged in the driving groove drives the first clamping jaw and the second clamping jaw to move inwards along the driving groove to form contraction actions corresponding to the first clamping jaw and the second clamping jaw in pairs, so that the sucker rod is clamped, and a clamping state possibly occurring when gears are meshed is avoided;
in addition, the split type slip pushes the slip sliding table to move towards the clamp body through the output end of the hydraulic cylinder, the shifting claw is arranged on the left side of the clamp body, the slip sliding table pushes the first shifting claw end of the shifting claw, the second shifting claw end rotates outwards around the pin shaft, the sucker rod is pushed to enter the sucker rod inlet and outlet grooves of the first clamping claw and the second clamping claw, the centering effect of the sucker rod in the well is achieved, under the matching of the slip sliding table and the clamp body, a coupling at the end part of the sucker rod is enabled to sit and squat between the slip sliding table and the clamp body, the bearing effect of the sucker rod in the well is achieved, and the sucker rod can be conveniently connected in a buckled mode.
Drawings
FIG. 1 is a schematic view of the overall installation of the present invention;
FIG. 2 is a schematic view of the overall construction of the split elevator;
figure 3 is a schematic view in partial section of the split elevator in a contracted condition with the top members removed;
figure 4 is a schematic view in partial section of the split elevator in an undamped condition with the top member removed;
FIG. 5 is a schematic top view of the drive plate;
FIG. 6 is a schematic front view of the drive plate;
FIG. 7 is a right side directional schematic view of the first jaw;
FIG. 8 is a schematic front view of the first jaw;
FIG. 9 is a schematic top view of the first jaw;
FIG. 10 is a schematic top view of the slip in an open position;
FIG. 11 is a schematic top view of a slip in a closed position;
FIG. 12 isbase:Sub>A schematic cross-sectional view A-A of FIG. 10;
FIG. 13 is a schematic structural view of the finger;
FIG. 14 is a schematic view of the guide carriage;
in the upper diagram: the device comprises an upper positioning seat 1, a guide steel wire rope 2, a guide sliding seat 3, a lower fixing seat 4, a split elevator 5, a wellhead 6, a big hook 7, an elevator rope 8, a split slip 9, a sliding rail connector 10, a sliding rail sleeve 11, a sliding rail supporting arm 12, a sliding rail rotating pin 13, an elevator hoop 14, a connecting bolt 15, an opening and closing sleeve 16, an opening and closing pin 17, an opening and closing rod 18, an explosion-proof electric control box 31, a power cylinder pushing device 32, a buffer support 33, an opening and closing pull pin 34, an elevator body 35, a first jaw 36, a second jaw 37, a lifting lug 38, an upper cover plate 42, an upper bearing 43, a driving plate 44, a lower bearing 45, an elevator shell 46, a cushion block 47, a sucker rod 48, a slip base 62, a slip sliding table 63, a shifting jaw 64, a clamp body 65, a position detection device 66, a hydraulic cylinder 67, a working table 72, a first jaw 73, a second jaw 74, a dust scraping plate 75 and a slip table pressing plate 76;
the oil pumping rod clamping jaw comprises a clamping jaw body 36.1, an arc-shaped jaw groove 36.2, a shifting rod 36.3, a driving groove 44.1, a central hole 44.2, a first shifting jaw end 64.1, a second shifting jaw end 64.2, a limiting protrusion 64.3, a pin shaft 64.4, a shifting jaw main body 64.5 and an oil pumping rod in-out groove 73.1.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that they are presented herein only to illustrate and explain the present invention and not to limit the present invention.
Referring to fig. 2 to 4, the split elevator 5 includes an explosion-proof electric control box 31, a power cylinder pushing device 32, a buffer support 33, an opening and closing pull pin 34, an elevator body 35, a first jaw 36, a second jaw 37, and a driving disc 44, the power cylinder pushing device 32 is arranged above the elevator body 35, the buffer support 33 is arranged outside the power cylinder pushing device 32, the explosion-proof electric control box 31 is arranged on the upper portion of the buffer support 33, the rear end of the power cylinder pushing device 32 is connected with the elevator body 35 through a movable connecting seat, the front end of the output shaft of the power cylinder pushing device 32 is in fit contact with the opening and closing pull pin 34, the opening and closing pull pin 34 is mounted on the upper surface of the driving disc 44, and the driving disc 44 is pushed to rotate by a certain angle through the power cylinder pushing device 32; two groups of first clamping jaws 36 and two groups of second clamping jaws 37 are arranged on the lower side of the middle part of the elevator body 35, shift levers 36.3 are respectively arranged on the tops of the first clamping jaws 36 and the second clamping jaws 37, the shift levers 36.3 are inserted into four driving grooves 44.1 arranged on the driving discs 44, the four driving grooves 44.1 are arranged at intervals, each driving groove 44.1 is of an arc-shaped groove structure, a central hole 44.2 is positioned at the center of the driving disc 44, and when the driving discs 44 rotate, the shift levers 36.3 arranged in the driving grooves 44.1 drive the first clamping jaws 36 and the second clamping jaws 37 to move along the driving grooves 44.1 to form contraction or expansion, so that the sucker rod 48 is clamped or loosened.
Referring to fig. 2 and 3, a lower bearing 45 is provided between the lower side of the outer wall of the driving disc 44 and the inner wall of the elevator body 35, a spacer 47 is provided on the upper portion of the driving disc 44, an upper cover plate 42 is provided on the upper portion of the spacer 47, an upper bearing 43 is provided between the upper cover plate 42 and the spacer 47, an elevator housing 46 is provided on the outside of the elevator body 35, and lifting lugs 38 are provided at both ends of the elevator body 35.
Referring to fig. 10-12, the split slip 9 of the invention includes a slip base 62, a slip sliding table 63, a pusher dog 64, a caliper body 65, a hydraulic cylinder 67, a first clamping jaw 73, and a second clamping jaw 74, wherein the slip sliding table 63 is disposed on one side of the slip base 62, the caliper body 65 is disposed on the other side of the slip sliding table 62, the hydraulic cylinder 67 is disposed on the outer side of the slip sliding table 63, the slip sliding table 63 is pushed to slide along the slip base 62 by an output end of the hydraulic cylinder 67, the first clamping jaw 73 and the second clamping jaw 74 are disposed in the middle of the right end of the slip sliding table 63, a sucker rod access slot 73.1 is disposed in the middle of the right end of the first clamping jaw 73 and the second clamping jaw 74, a groove for mounting the pusher dog 64 is disposed on the left side of the caliper body 65, and the middle of the pusher dog 64 is connected with the upper surface of the groove through a pin 64.4.
The upper part of the slip sliding table 63 is provided with a working table surface 72, sliding table pressure plates 76 are respectively arranged below two sides of the slip base 62, dust scraping plates 75 are arranged on tracks on two sides of the slip base 62, the dust scraping plates 75 are fixedly connected with the slip sliding table 63, and the dust scraping plates 75 are driven by the movement of the slip sliding table 63 to scrape impurities on the tracks on two sides of the slip base 62; a position detecting device 66 is provided on the outside of the caliper body 65.
Referring to fig. 13, the pusher dog 64 of the present invention includes a first pusher dog end 64.1, a second pusher dog end 64.2, a limiting protrusion 64.3, a pin 64.4 and a pusher dog body 64.5, wherein one end of the pusher dog body 64.5 is provided with the first pusher dog end 64.1 having a circular structure, the other end is provided with the second pusher dog end 64.2, one side of the second pusher dog end 64.2 is provided with the limiting protrusion 64.3 for being matched with the inlet and outlet grooves 73.1 of the first clamping jaw 73 and the second clamping jaw 74, and the middle of the pusher dog body 64.5 is provided with the pin 64.4.
Referring to fig. 14, the guiding slide carriage 3 of the present invention comprises a slide rail connector 10, a slide rail sleeve 11, a slide rail supporting arm 12, a slide rail rotating pin 13, an elevator hoop 14, a connecting bolt 15, an opening and closing pin 17, and an opening and closing rod 18, wherein the elevator hoop 14 is connected by two semicircular rings through the opening and closing pin 17 and the connecting bolt 15, and can tightly hold the split elevator 5; the two sides of the elevator hoop 14 are movably connected with the two slide rail supporting arms 12 through slide rail rotating pins 13 respectively, the outer end of each slide rail supporting arm 12 is provided with a slide rail connector 10 respectively, slide rail sleeves 11 are arranged in the slide rail connectors 10 respectively, and the guide steel wire rope 2 is inserted into the slide rail sleeves 11.
Preferably, one side of one set of sliding rail supporting arms 12 is provided with an opening and closing sleeve 16 with an arc structure, one side of the other set of sliding rail supporting arms 12 is provided with an opening and closing rod 18 with an arc structure, the opening and closing rod 18 is inserted into the opening and closing sleeve 16, and the center points of the split elevator 5 and the wellhead 6 can be conveniently centered through adjustment of the opening and closing sleeve 16 and the opening and closing rod 18, so that the requirement of centering of actions is met.
Referring to fig. 7-9, the first jaw 36 includes a jaw body 36.1, an arc-shaped jaw groove 36.2 and a shift lever 36.3, the jaw body 36.1 is provided with the arc-shaped jaw groove 36.2 at one side for cooperating with the sucker rod 48, the shift lever 36.3 is fixedly connected to the top of the jaw body 36.1, and the shift lever 36.3 is inserted into a driving groove 44.1 of the driving disc 44.
Preferably, the four driving grooves 44.1 are arranged at intervals, each driving groove 44.1 is an arc-shaped groove structure, and each driving groove 44.1 is arranged in an involute shape from inside to outside, so as to drive the shift lever 36.3 to move in a limited range along the driving grooves 44.1, and the first jaw 36 and the second jaw 37 are formed to contract or expand.
The invention provides a using method of a split type clamping device of a sucker rod for workover treatment, which comprises the following steps:
1. before well site workover construction, an upper positioning seat 1 is fixed on an upper cross beam of a workover rig derrick; the upper end of a guide steel wire rope 2 is connected to the upper positioning seat 1, then the guide steel wire rope penetrates through a sliding rail sleeve 11 on the guide sliding seat 3, the lower end of the guide steel wire rope 2 is connected to a lower fixing seat 4, and the lower fixing seat 4 is fixed at a casing head below a wellhead 6; adjusting the angles and the positions of the upper positioning seat 1 and the lower fixing seat 4 according to the position relation of the split elevator 5 and the sucker rod 48, hoisting the split elevator 5 by using a big hook 7, and then moving up and down to confirm the sliding and righting effect of the guide sliding seat 3 and the guide steel wire rope 2;
2. when a sucker rod 48 needs to be put into a wellhead 6, the hook 7 drives the split elevator 5 and the guide sliding seat 3 to be lifted to a proper height along the guide steel wire rope 2 through the lifting rope 8 to hover, the split elevator 5 is opened, the driving disc 44 is pushed to rotate for 20-40 degrees through the power cylinder pushing device 32, the deflector rod 36.3 arranged in the driving groove 44.1 drives the first jaw 36 and the second jaw 37 to move inwards along the driving groove 44.1 to form a contraction action, clamping of the sucker rod 48 is realized, then the hook 7 descends, the lower end of the sucker rod 48 is put onto a split slip 9 at the wellhead 6, the slip table 63 is pushed to move towards the caliper body 65 through the output end of the hydraulic cylinder 67, the left side of the caliper body 65 is provided with a pusher dog 64, the slip table 63 pushes the first pusher dog end 64.1 of the pusher dog 64, the second pusher end 64.2 rotates outwards around a pin shaft 64.4, and the sucker rod 48 is pushed to enter the first jaw 73 and the second jaw 74 to enter the groove 73.1 to enter and exit the groove 73.1, so as to realize centering action of the sucker rod 48 in a well; continuing to perform the screwing-on operation, connecting the sucker rod 48 with the sucker rod 48 in the well, then opening the split slips 9, operating the hook 7 to lower the sucker rod 48 into the well, then closing the split slips 9 to support the sucker rod 48 in the well, then opening the split elevator 5, driving the split elevator 5 and the guide sliding seat 3 by the hook 7 to move upwards to return to the hovering position, and completing the lowering cycle of one sucker rod 48;
3. when the sucker rod 48 needs to be hung out of the well mouth 6, the split elevator 5 reaches the working table 72 of the split slip 9 downwards in an open state, the split elevator 5 is driven, the first clamping jaw 36 and the second clamping jaw 37 clamp the sucker rod 48 in the well, then the hook 7 drives the sucker rod 48 to move upwards, the split slip 9 is opened, and when the next coupling of the sucker rod 48 leaves the split slip 9 for a certain distance, the split slip 9 is driven to close, so that the falling action of the sucker rod 48 is limited; then the split elevator 5 slowly descends to enable the sucker rod 48 below to sit and squat on the working table 72 of the split slips 9; the tripping operation is then performed to separate the two sucker rods 48, the split elevator 5 is opened and ascends back to the suspended position, and the separated sucker rods 48 are removed, completing one sucker rod 48 trip cycle.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent changes made according to the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a workover is with sucker rod to open clamping device, includes hook (7), lifting rope (8), elevator and slips, passes through lifting rope (8) at the lower extreme of hook (7) and connects the elevator, is equipped with slips, characterized by on well head (6): the well mouth is characterized by further comprising an upper positioning seat (1), two guiding steel wire ropes (2), a guiding sliding seat (3) and a lower fixing seat (4), wherein the two sides of the upper positioning seat (1) are fixedly provided with the two guiding steel wire ropes (2), the lower ends of the guiding steel wire ropes (2) are fixedly arranged on the lower fixing seat (4) on the lower side of the well mouth (6), the guiding sliding seat (3) is installed on the two guiding steel wire ropes (2), the guiding sliding seat (3) tightly holds an elevator, the elevator adopts a split elevator (5), and slips adopt split slips (9); the split elevator (5) comprises an explosion-proof electric control box (31), a power cylinder pushing device (32), a buffer support (33), an opening and closing pull pin (34), an elevator body (35), a first clamping jaw (36), a second clamping jaw (37) and a driving disc (44), wherein the power cylinder pushing device (32) is arranged above the elevator body (35), the buffer support (33) is arranged on the outer side of the power cylinder pushing device (32), the explosion-proof electric control box (31) is arranged on the upper portion of the buffer support (33), the rear end of the power cylinder pushing device (32) is connected with the elevator body (35) through a movable connecting seat, the front end of an output shaft of the power cylinder pushing device (32) is in matched contact with the opening and closing pull pin (34), the opening and closing pull pin (34) is arranged on the upper surface of the driving disc (44), and the driving disc (44) is pushed to rotate for a certain angle through the power cylinder pushing device (32); two groups of first clamping jaws (36) and two groups of second clamping jaws (37) are arranged on the lower side of the middle of the elevator body (35), shifting rods (36.3) are respectively arranged at the tops of the first clamping jaws (36) and the second clamping jaws (37), the shifting rods (36.3) are inserted into driving grooves (44.1) formed in the driving disc (44), and when the driving disc (44) rotates, the shifting rods (36.3) arranged in the driving grooves (44.1) drive the first clamping jaws (36) and the second clamping jaws (37) to move along the driving grooves (44.1) to form contraction or expansion, so that the sucker rod (48) is clamped or loosened.
2. The split-type clamping device for sucker rods used in workover operations according to claim 1, wherein: the elevator is characterized in that a lower bearing (45) is arranged between the lower side of the outer wall of the driving disc (44) and the inner wall of the elevator body (35), a cushion block (47) is arranged on the upper portion of the driving disc (44), an upper cover plate (42) is arranged on the upper portion of the cushion block (47), an upper bearing (43) is arranged between the upper cover plate (42) and the cushion block (47), an elevator shell (46) is arranged outside the elevator body (35), and lifting lugs (38) are arranged at two ends of the elevator body (35).
3. The split type clamping device of the sucker rod for workover treatment according to claim 2, wherein: slip (9) include slips base (62), slips slip table (63), pusher dog (64), the pincers body (65), pneumatic cylinder (67), first clamping jaw (73), second clamping jaw (74), one side of slips base (62) is equipped with slips slip table (63), and the opposite side is equipped with the pincers body (65), the outside of slips slip table (63) is equipped with pneumatic cylinder (67), and output through pneumatic cylinder (67) promotes slips slip table (63) and slides along slips base (62), the right-hand member middle part of slips slip table (63) is equipped with first clamping jaw (73) and second clamping jaw (74), and the right-hand member middle part of first clamping jaw (73) and second clamping jaw (74) is equipped with the sucker rod and advances groove (73.1), the left side of the pincers body (65) is equipped with the recess of installation pusher dog (64), the middle part of pusher dog (64) is connected with the upper surface of recess through round pin axle (64.4).
4. The split-type clamping device of the sucker rod for workover treatment according to claim 3, wherein: a working table surface (72) is arranged at the upper part of the slip sliding table (63), sliding table pressing plates (76) are respectively arranged below the two sides of the slip base (62), dust scraping plates (75) are arranged on the tracks on the two sides of the slip base (62), the dust scraping plates (75) are fixedly connected with the slip sliding table (63), and the dust scraping plates (75) are driven by the movement of the slip sliding table (63) to scrape impurities on the tracks on the two sides of the slip base (62); a position detection device (66) is arranged on the outer side of the clamp body (65).
5. The split-type clamping device of the sucker rod for workover treatment according to claim 4, wherein: pusher dog (64) are dialled claw end (64.1), second including first group claw end (64.2), spacing arch (64.3), round pin axle (64.4) and pusher dog main part (64.5), the one end of pusher dog main part (64.5) is equipped with the first group claw end (64.1) of circular structure, and the other end is equipped with second group claw end (64.2), one side that claw end (64.2) was dialled to the second is equipped with spacing arch (64.3) for with the sucker rod business turn over groove (73.1) of first clamping jaw (73) and second clamping jaw (74) cooperate, the centre of pusher dog main part (64.5) is equipped with round pin axle (64.4).
6. The split-type clamping device for the sucker rod used for workover treatment according to claim 5, which is characterized in that: the guide sliding seat (3) comprises a sliding rail connector (10), a sliding rail sleeve (11), sliding rail supporting arms (12), a sliding rail rotating pin (13), an elevator hoop (14), a connecting bolt (15), an opening and closing pin (17) and an opening and closing rod (18), wherein the elevator hoop (14) is connected with the connecting bolt (15) through the opening and closing pin (17) and two semicircular rings, the two sides of the elevator hoop (14) are respectively connected with the two sliding rail supporting arms (12) through the sliding rail rotating pin (13) in a movable mode, the outer end of each sliding rail supporting arm (12) is respectively provided with the sliding rail connector (10), the sliding rail sleeve (11) is arranged in the sliding rail connector (10), and the guide steel wire rope (2) is inserted into the sliding rail sleeve (11).
7. The split-type clamping device of the sucker rod for workover treatment according to claim 6, wherein: one side of one group of sliding rail supporting arms (12) is provided with an opening and closing sleeve (16) with an arc-shaped structure, one side of the other group of sliding rail supporting arms (12) is provided with an opening and closing rod (18) with an arc-shaped structure, and the opening and closing rod (18) is inserted into the opening and closing sleeve (16).
8. The split-type clamping device for the sucker rod used for workover treatment according to claim 7, which is characterized in that: the first clamping jaw (36) comprises a clamping jaw body (36.1), arc-shaped claw grooves (36.2) and a shifting rod (36.3), wherein the arc-shaped claw grooves (36.2) are formed in one side of the clamping jaw body (36.1) and are used for being matched with the sucker rod (48), the shifting rod (36.3) is fixedly connected to the top of the clamping jaw body (36.1), and the shifting rod (36.3) is inserted into four driving grooves (44.1) in the driving disc (44).
9. The split-type clamping device of the sucker rod for workover treatment according to claim 8, wherein: the four driving grooves (44.1) are arranged at intervals, each driving groove (44.1) is of an arc groove structure, each driving groove (44.1) is arranged in an involute shape from inside to outside, and the driving rod (36.3) is driven to move in a limited range along the driving grooves (44.1) to form contraction or expansion of the first clamping jaw (36) and the second clamping jaw (37).
10. The method of using the split-type clamping device for the sucker rod used in the workover treatment according to claim 9, comprising the steps of:
1. before well site workover construction, an upper positioning seat (1) is fixed on an upper cross beam of a workover rig derrick; the upper end of the guide steel wire rope (2) is connected to the upper positioning seat (1), then the guide steel wire rope penetrates through a sliding rail sleeve (11) on the guide sliding seat (3), the lower end of the guide steel wire rope (2) is connected to the lower fixing seat (4), and the lower fixing seat (4) is fixed at a casing head below a wellhead (6); adjusting the angles and the positions of the upper positioning seat (1) and the lower fixing seat (4) according to the position relation between the split elevator (5) and the sucker rod (48), hoisting the split elevator (5) by using a big hook (7) and then moving up and down, and confirming the sliding righting effect of the guide sliding seat (3) and the guide steel wire rope (2);
2. when a sucker rod (48) needs to be put into a wellhead (6), the hook (7) drives the split elevator (5) and the guide sliding seat (3) to be lifted to a proper height along the guide steel wire rope (2) through the lifting rope (8) to hover, the split elevator (5) is opened, the driving disc (44) is pushed to rotate for 20-40 degrees through the power cylinder pushing device (32), the deflector rod (36.3) arranged in the driving groove (44.1) drives the first clamping jaw (36) and the second clamping jaw (37) to move inwards along the driving groove (44.1) to form a contraction action, so that the clamping of the sucker rod (48) is realized, then, the hook (7) descends, the lower end of the sucker rod (48) is put into the split slip (9) at the wellhead (6), the slip table (63) is pushed to move towards the clamp body (65) through the output end of the hydraulic cylinder (67), the left side of the clamp body (65) is provided with the poking claw (64), the poking claw (63) pushes the first poking claw (64) of the slip table (64) to move towards the clamp body (65), the second slip table (64) to enter the well, the second slip table (73.1) and the sucker rod (73) enters the inner side of the well, and the second slip table (73) and the second slip table (48) to move; continuing to carry out the upper buckling operation, after the sucker rod (48) is connected with the sucker rod (48) in the well, opening the split slips (9), operating the hook (7) to lower the sucker rod (48) into the well, then closing the split slips (9), bearing the sucker rod (48) in the well, then opening the split elevator (5), driving the split elevator (5) and the guide slide seat (3) to move upwards by the hook (7) to return to the hovering position, and completing the lowering circulation of the sucker rod (48);
3. when the sucker rod (48) needs to be hung out of a well mouth (6), the split elevator (5) reaches a working table surface (72) of a split slip (9) downwards in an open state, the split elevator (5) is driven to enable the first clamping jaw (36) and the second clamping jaw (37) to clamp the sucker rod (48) in the well, then the hook (7) drives the sucker rod (48) to ascend, the split slip (9) is opened at the same time, and after the next coupling of the sucker rod (48) leaves the split slip (9) for a certain distance, the split slip (9) is driven to close to limit the falling action of the sucker rod (48); then the split elevator (5) slowly descends to enable the sucker rod (48) below to sit and squat on the working table surface (72) of the split slip (9); tripping is then performed to separate the two sucker rods (48), the split elevator (5) is opened and ascended back to the hovering position, the separated sucker rods (48) are removed, and a cycle of sucker rod (48) removal is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211629365.1A CN115628019B (en) | 2022-12-19 | 2022-12-19 | Split type clamping device for sucker rod for workover treatment and use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211629365.1A CN115628019B (en) | 2022-12-19 | 2022-12-19 | Split type clamping device for sucker rod for workover treatment and use method |
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| CN115628019B CN115628019B (en) | 2023-03-28 |
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| CN114320184A (en) * | 2021-12-24 | 2022-04-12 | 中国石油大学胜利学院 | Self-positioning clamping elevator for sucker rod |
| CN217950295U (en) * | 2022-04-24 | 2022-12-02 | 江苏如通石油机械股份有限公司 | Novel closed loop type power elevator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450246A (en) * | 2003-04-18 | 2003-10-22 | 崔时光 | Automatic service rig for oil field |
| US20080277108A1 (en) * | 2007-05-09 | 2008-11-13 | Frank's Casing Crew & Rental Tools, Inc. | Single joint elevator with gripping jaws |
| CN206233872U (en) * | 2016-12-08 | 2017-06-09 | 湖北省聚元石油自动化装备股份有限公司 | A kind of hook block floating guiding of vehicle carried well repairing machine traveling system and elevator position control device |
| CN211648028U (en) * | 2019-12-31 | 2020-10-09 | 中国石油大学(华东) | Automatic rotatory elevator that opens and shuts |
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| CN114320184A (en) * | 2021-12-24 | 2022-04-12 | 中国石油大学胜利学院 | Self-positioning clamping elevator for sucker rod |
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| CN115628019B (en) | 2023-03-28 |
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