CN204419167U - One is given up and is tested envelope integrated pipe column - Google Patents
One is given up and is tested envelope integrated pipe column Download PDFInfo
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- CN204419167U CN204419167U CN201420763030.3U CN201420763030U CN204419167U CN 204419167 U CN204419167 U CN 204419167U CN 201420763030 U CN201420763030 U CN 201420763030U CN 204419167 U CN204419167 U CN 204419167U
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Abstract
The utility model discloses one to give up and test envelope integrated pipe column.Sub-releasing axle plug has the bridging plug section being serially connected in and testing the section of giving up on sealed packer lower end and be connected to below the section of giving up, differential slider mechanism when setting pressure, the section of giving up being given up is provided with in the section of giving up, and be provided with ball-throwing type slider mechanism testing in sealed packer, in use, first by below this tubing string in sleeve pipe, suppress in this tubing string again, until the bridging plug section of sub-releasing axle plug sets, then intensified pressure, the section of giving up of sub-releasing axle plug is given up, namely the section of giving up and bridging plug section are thrown off, now the section of giving up upwards can be mentioned with testing together with sealed packer, then after being lifted to corresponding height, steel ball is thrown in this tubing string, to make the ball-throwing type slider mechanism action of testing in sealed packer, and suppress to testing after sealed packer sets, continue again to suppress, what the pressure drop after suppressing stopping by observation judged the bridging plug section of sub-releasing axle plug sets reliability, therefore this tubing string has and sets reliable advantage.
Description
Technical field
The utility model relates to one and gives up and test envelope integrated pipe column.
Background technology
At present; in oil field layered development process; in order to tamper seal blocking layer, the general sub-releasing axle plug that adopts carries out shutoff, in operation process; in order to verify the sealing of sub-releasing axle plug; need after giving up, packer carries out checking sub-releasing axle plug sealing next time separately, and working procedure is complicated; labor strength increases, and the engineering time is long.Traditional giving up is tested envelope integrated pipe column there are the following problems: 1, sub-releasing axle plug beats hydraulic pressure by throwing steel ball ground to carry out setting giving up, test latus rectum in sealed packer and must be greater than steel ball, otherwise steel ball is thrown and bridging plug will be caused to give up unsuccessfully less than position, and the type selecting of sub-releasing axle plug is subject to testing the restriction of latus rectum in sealed packer; 2, testing sealed packer many employings machinery sets as Y211 type and Y251 type packer, rely on packer slip to be supported on casing wall to realize setting, be subject to the impact of casing wall smooth degree, site operation success rate is low, need could success through repeatedly setting, set the extruding that process sleeve pipe is subject to slips simultaneously and easily produce damage.As Chinese document 201210303494.1 discloses the difunctional sub-releasing axle plug of a kind of horizontal well, comprise top connection, central tube, lower contact, lock claw is provided with in top connection, be provided with between top connection and lock claw and set piston, ball seat of giving up is provided with in lock claw, lock claw is equipped with for the alignment pin of locking ball and the spacer pin for limiting the undue movement of ball seat of giving up, ball seat of giving up be provided with spacer pin with the use of stopper slot, lock claw is connected by being connected pin with ball seat of giving up; Top connection is threaded with lock claw top, lock claw bottom is connected by left hand thread with central tube, pressure ring, sliding sleeve, fishing joint are connected to the external diameter of central tube by screw thread and pin, the bottom of central tube is threaded with hypocentrum, hypocentrum is threaded step by step with lower contact, adapter sleeve, filling cylinder, the head that is located by connecting, sleeve, set test sealing cylinder, upper centrum, slips cover, hypocentrum be arranged on the external diameter of central tube respectively, slips is by the endoporus loading slips cover, and the top of lock ring and fishing joint, central tube locks; Device for filling comprises sealing drum and is located at the filling cylinder of sealing drum outside, the bottom of sealing drum is provided with spring, filling cylinder is provided with pack hole, filling cylinder screw thread is connected with the head that is located by connecting, the inwall of head of being located by connecting is provided with the positioning key for making the filling mouth of filling central tube overlap with the pack hole on filling cylinder, contacts when sealing drum moves with central tube.When oilfield operates, the well design degree of depth is entered under utilizing tubing string can salvage bridging plug, then suppress with pump, pressure is promoted to set piston by central tube, force descending compression pressure ring, compressive force passes to set step by step to be tested on sealing cylinder and slips, such slips tightly be stuck on casing wall, set simultaneously and test sealing cylinder and also set on casing wall, realize Seal Oil, water, make oil, cannot circulate under waterborne, pressurization is needed after having set, when being forced into 18Mpa, connection pin is cut off, ball seat of giving up in lock claw is descending, the lance pawl of such lock claw shrinks and automatically disengages central tube, so just well head can be proposed lock claw part upper lifting pipe post.Set the stage giving up like this, input locking ball is needed to give up, this will cause the minimum diameter testing sealed packer must be greater than the sphere diameter of locking ball, also will cause and test the envelope stage, test that pressure that sealed packer bears is comparatively large and self wall thickness is less, such causing is tested sealed packer and is set reliability and can not be guaranteed, and tests the problem that envelope is failed.
Utility model content
The purpose of this utility model is to provide one and gives up and test envelope integrated pipe column, is intended to solve in prior art and unreliablely caused tests sealed knot really inaccurate problem because testing setting in sealed packer.
In order to realize above object, giving up in the utility model, it is as follows to test the technical scheme of sealing integrated pipe column:
Give up and test envelope integrated pipe column, comprise be connected in series from the top down test sealed packer and sub-releasing axle plug, test sealed packer and sub-releasing axle plug is hydraulic setting formula, sub-releasing axle plug has the bridging plug section being serially connected in and testing the section of giving up on sealed packer lower end and be connected to below the section of giving up, be provided with in the section of giving up for pressure above it be greater than bridging plug section set pressure time the section of giving up is given up differential slider mechanism, and to set and the ball-throwing type slider mechanism making to test sealed packer up/down perforation for making to test sealed packer after pitching testing in sealed packer to be provided with.
Test sealed packer comprise the central tube of downward-extension and periphery thereof are assembled from the top down successively test blockade buckle mechanism, test sealing cylinder, test block buckle mechanism by between the upper and lower every relative interworking test block pawl and test block cover form, test block pawl and test block cover be respectively be fixed on fixture on the periphery of central tube and along the longitudinal direction guiding movement be assemblied in the moving member on central tube, the side away from fixture of moving member is fixed with top and press-fits the slide block fitting over and test sealing cylinder one end, the other end top testing sealing cylinder press-fits and to fit on central tube on fixing adapter sleeve, adapter sleeve is sleeved on the periphery tested and block buckle mechanism.
The side testing sealing cylinder dorsad of slide block is connected with guiding movement along the vertical direction and is assemblied in hydraulic cylinder on the periphery of central tube, the periphery upper sleeve gasket of hydraulic cylinder is equipped with the lock ring of guiding movement cooperation along the vertical direction, the downside of lock ring is connected with by testing offset nail the lower contact be fixed on central tube periphery, and between hydraulic cylinder and lower contact, be provided with that lock ring and central tube surround set gap, the internal face of lock ring is provided with the pressurized step being upward in and setting above gap, the tube wall of central tube offers the fluid hole being in and setting between gap and ball-throwing type slider mechanism.
The periphery of lower contact is provided with the locking convex shoulder for stoping lock ring to move upward, and the inwall of lock ring is provided with the block step of block below locking convex shoulder.
Ball-throwing type slider mechanism comprise by test envelope set the ball seat that pin is connected to the up/down perforation in central tube, the outer wall shutoff of ball seat is on the inner aperture of fluid hole.
The packing element sleeve pipe of guiding movement suit along the vertical direction on pipe and periphery thereof in the packing element that bridging plug section comprises downward-extension, the periphery of packing element sleeve pipe is set with the bridging plug packing element that can stretch up and down, the top, upper end of bridging plug packing element is contained on the glue tube base of upper end connection of packing element sleeve pipe, top, lower end is contained in the anchor tooth main body that is connected with packing element its lower end, anchor tooth main body sets pin by bridging plug and to be connected in packing element on pipe, the downside of anchor tooth main body is equipped with anchor tooth by wedge surface cooperation, the downside wedge surface of anchor tooth is assemblied on anchor tooth seat, anchor tooth seat is fixed on the periphery of pipe in packing element, and in packing element pipe tube wall on offer the packing element pressing anchor tooth main body downwards for hydraulic medium and set hole.
The upside of glue tube base is connected with sliding sleeve joint by glue tube base joint, the upside of sliding sleeve joint is connected with bridging plug lock claw inwardly, and in packing element the upper end of pipe be connected with bridging plug lock claw adaptive and between the upper and lower every lock claw cover, bridging plug lock claw and lock claw cover are configured for the bridging plug latching device be connected to the descending rear catch of glue tube base in bridging plug lock claw on lock claw cover periphery.
The periphery of sliding sleeve joint is set with fishing sleeve, the lower end jacket wall of fishing sleeve offers the elongated hole of downward-extension, and in elongated hole, guiding movement is equipped with and is connected to non-slipping block on sliding sleeve joint by salvaging pin along the vertical direction.
Differential slider mechanism is comprised and is fixed on connector in the section of giving up and the interior bridging plug piston connected by pin of giving up thereof, the downside of connector is fixed with sliding sleeve joint, the lower end swelling of sliding sleeve joint is connected in the upper end of bridging plug section, and the pull bar be connected with in the lower end of bridging plug piston for making the lower end of sliding sleeve joint shrink when descending, what pull bar and bridging plug piston offer up/down perforation sets perforation.
The lower end of pull bar is provided with the annular convex shoulder of block below sliding sleeve joint.
In the utility model, sub-releasing axle plug has the bridging plug section being serially connected in and testing the section of giving up on sealed packer lower end and be connected to below the section of giving up, be provided with in the section of giving up for pressure above it be greater than bridging plug section set pressure time the section of giving up is given up differential slider mechanism, and set and the ball-throwing type slider mechanism making to test sealed packer up/down perforation for making to test sealed packer after pitching testing in sealed packer to be provided with, in use, first by below this tubing string in sleeve pipe, suppress in this tubing string again, until the bridging plug section of sub-releasing axle plug sets, then intensified pressure, the section of giving up of sub-releasing axle plug is given up, namely the section of giving up and bridging plug section are thrown off, now the section of giving up upwards can be mentioned with testing together with sealed packer, then after being lifted to corresponding height, steel ball is thrown in this tubing string, to make the ball-throwing type slider mechanism action of testing in sealed packer, and suppress to testing after sealed packer sets, continue again to suppress, what the pressure drop after suppressing stopping by observation judged the bridging plug section of sub-releasing axle plug sets reliability, therefore integrated pipe column of the present utility model has and sets reliable advantage.Simultaneously, give up because sub-releasing axle plug adopts differential slider mechanism to realize, so setting and giving up the stage at sub-releasing axle plug, without the need to throwing in steel ball by sub-releasing axle plug again, also just without the need to making requirement to the minimum diameter testing sealed packer, like this testing on sealed packer and can realizing setting by the hydraulic setting structure of relatively thick, ensure that its reliability set, also just improve the accuracy tested in envelope process and test sealed knot fruit.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present utility model under commit condition;
Fig. 2 is that embodiment of the present utility model is testing the structural representation under envelope state;
Fig. 3 is the structural representation testing sealed packer in Fig. 1;
Fig. 4 is the structural representation of sub-releasing axle plug in Fig. 1.
Detailed description of the invention
Give up in the utility model and test the embodiment of envelope integrated pipe column: as shown in Figures 1 to 4, this tubing string is by the coiled tubing 1 be connected in series successively from the top down, test sealed packer 2, tubing nipple 3, back-off sub 5, sub-releasing axle plug 6, plug 7 is formed, wherein test sealed packer 2 and sub-releasing axle plug 6 all relies on hydraulic setting, not by the impact of internal surface of sleeve pipe smooth degree, test latus rectum in sealed packer 2 simultaneously and be greater than 50mm, can combinationally use with multiple bridging plug, also simplify sub-releasing axle plug 6 and set the step testing envelope operation, improve one-time success rate, protect sleeve pipe to greatest extent.After being lowered into design attitude, hydraulic pressure is beaten on ground, sub-releasing axle plug 6 is set, continue to suppress to back-off sub 5 and sub-releasing axle plug 6 and throw off, upper lifting pipe post 3-5m, ground is dropped into and is tested envelope steel ball, after steel ball to ball seat 3 position testing sealed packer 2, ground is beaten hydraulic pressure and is made to test sealed packer 2 and set, checking sub-releasing axle plug 6 sealing.
Test sealed packer 2 comprise downward-extension test envelope test envelope central tube 206 and periphery thereof are assembled from the top down successively test and seal up joint 201, lock claw block 203, test and block pawl 204, test and block cover 205, test and seal up packing element 207, test excluder ring 208, test envelope lower rubber cylinder 209, slide block 210, hydraulic cylinder 212, lock ring 211, test envelope lower contact 217, test block pawl 204 and test block cover 205 interworking and between the upper and lower every and form and test blockade buckle mechanism, test blockade pawl 204 be outwardly and be fixed on the fixture on the periphery testing envelope central tube 206, testing and blocking cover 205 is that guiding movement is assemblied in the moving member tested on envelope central tube 206 along the longitudinal direction, testing blockade cover 205 is connected on slide block 210 by the envelope sliding sleeve of testing extended along the vertical direction, and test seal up packing element 207 and test envelope lower rubber cylinder 209 all slip cap be contained in test envelope sliding sleeve periphery on, test the top, upper end of sealing up packing element 207 and be contained in the lower end testing envelope adapter sleeve 202, test envelope adapter sleeve 202 to be sleeved on the periphery testing and block buckle mechanism and upper end and to seal up joint 201 by testing of connecing of top load and be connected in test and seal on central tube 206, the top, lower end testing envelope lower rubber cylinder 209 is contained on slide block 210, the lower end of slide block 210 is inserted in the annular groove of hydraulic cylinder 212 upper end, and hydraulic cylinder 212 and test be provided with lock ring 211 between envelope lower contact 217 and test that envelope central tube 206 surrounds set gap, the internal face of lock ring 211 is provided with the pressurized step being upward in and setting above gap, the tube wall testing envelope central tube 206 offers to be communicated with and sets the fluid hole 213 in gap, the inner of fluid hole 213 is by the outer wall shutoff of the ball seat 3 of up/down perforation, ball seat 3 sets pin 214 and is connected to test by testing envelope and makes to test sealed packer after being formed in pitching in envelope central tube 206 and set and the ball-throwing type slider mechanism making to test sealed packer up/down perforation.The downside of lock ring 211 is connected to tests in envelope lower contact 217 by testing offset nail 215, test envelope lower contact 217 be fixed on test envelope central tube 206 on, and the periphery testing envelope lower contact 217 is provided with the locking convex shoulder for stoping lock ring 211 to move upward, the inwall of lock ring 211 is provided with the block step of block below locking convex shoulder.After having given up, on put forward the tube coupling distance of a coiled tubing, and input tests envelope steel ball, after 10 minutes, oil pipe just suppresses 5MPa, test envelope to set pin 214 and cut off under the effect of ball seat 3, ball seat 3 moves down, working solution enters fluid hole 213, promote hydraulic cylinder 212 moves, compression is tested to seal up packing element 207 and test envelope lower rubber cylinder 209 and is moved, test block cover 205 snap in test block pawl 204 realize locking, packer setting completes, when pressure reaches 15MPa, test offset nail 215 to cut off, now abrupt pressure reduction in coiled tubing, liquid starts to enter oil jacket annular space from fluid hole 213 and carries out testing envelope.
Sub-releasing axle plug 6 comprises the top connection 601 of giving up be connected in series successively from the top down, to give up upper center tube 604, to give up adapter sleeve 605, to give up lower center tube 607, connector 610, lock claw cover, packing element sleeve pipe, bridging plug lower contact, to give up upper center tube 604, the periphery of the interior pipe of giving up that adapter sleeve 605 of giving up is formed by connecting with lower center tube 607 of giving up is connected upper cylinder sleeve 602, to give up piston 603, lower cylinder sleeve, intermediate sleeve 608, sliding sleeve joint and form the section of giving up of sub-releasing axle plug 6, connect bridging plug piston 611 by pin of giving up in connector 610 and form differential slider mechanism, packing element sleeve pipe connects fishing sleeve 609 from the top down successively, bridging plug lock claw 612, salvage the collar 615, release cover 617(lock claw cover 619), glue tube base joint 620, glue tube base 621, bridging plug packing element and bridging plug spacer ring 626(packing element sleeve pipe 622), shoulder protector 627, anchor tooth main body 628, anchor tooth 629, anchor tooth seat 630 constitutes the bridging plug section of sub-releasing axle plug 6.The section of giving up is serially connected in the below testing sealed packer, and bridging plug section is connected to the below of the section of giving up by differential slider mechanism.Bridging plug packing element by two between the upper and lower every long packing element type 623 and the short rubber cylinder 625 be folded between the two form, the top of bridging plug packing element is contained on the glue tube base 621 of upper end connection of packing element sleeve pipe 622, top, lower end is contained in the anchor tooth main body 628 that is connected with packing element sleeve pipe 622 lower end, anchor tooth main body 628 sets pin 632 by bridging plug and to be connected in packing element on pipe 624, the downside of anchor tooth main body 628 is equipped with anchor tooth 629 by wedge surface cooperation, the downside wedge surface of anchor tooth 629 is assemblied on anchor tooth seat 630, anchor tooth seat 630 is fixed on the periphery of pipe 624 in packing element, and in packing element pipe 624 tube wall on offer the packing element pressing anchor tooth main body 628 downwards for hydraulic medium and set hole.The upside of glue tube base 621 connects sliding sleeve joint 616 by glue tube base joint 620, the upside of sliding sleeve joint 616 connects bridging plug lock claw 612 inwardly, and in packing element the upper end of pipe 624 connect with bridging plug lock claw 612 adaptive and between the upper and lower every lock claw overlap 619, bridging plug lock claw 612 and lock claw are overlapped 619 and are configured for being connected to lock claw in bridging plug lock claw 612 with the descending rear catch of glue tube base 621 and overlap bridging plug latching device on 619 peripheries.The periphery of sliding sleeve joint 616 is sleeved on fishing sleeve 609, the lower end jacket wall of fishing sleeve 609 offers the elongated hole of downward-extension, and in elongated hole, guiding movement is equipped with and is connected to non-slipping block 618 on sliding sleeve joint 616 by salvaging pin 633 along the vertical direction.The downside of connector 610 is connected on sliding sleeve joint 616, the lower end swelling of sliding sleeve joint 616 is connected in the upper end of lock claw cover 619, and the pull bar 614 be connected with in the lower end of bridging plug piston 611 for making the lower end of sliding sleeve joint 616 shrink when descending, what pull bar 614 and bridging plug piston 611 offer up/down perforation sets perforation.Tubing string is by the postpone that puts in place under designing requirement, oil pipe just suppresses 5MPa, bridging plug sets shear pin and is cut off, glue tube base joint 620 starts to promote compression long packing element type 623, short rubber cylinder 625, extrude anchor tooth 629, when boost in pressure is to 10MPa, under the promotion of bridging plug piston 611, bridging plug lock claw 612 comes downwards to lock claw and overlaps 619 positions, realize locking, packer set completes; Continue to suppress to >=15MPa, pin 613 of giving up is pulled off, and now by bridging plug section separately, abrupt pressure reduction, completes operation of giving up to the section of giving up.
In the present embodiment, tubing string is in the specific implementation, carries out in accordance with the following steps:
The first step, carries out assembly by designing requirement, from top to bottom: test sealed packer, oil pipe, back-off sub, can sub-releasing axle plug, and enter design attitude down in order, the packer stuck point degree of depth avoids casing coupling, and error must not exceed ± 1m;
Second step, setting sub-releasing axle plug, tubing string is by the postpone that puts in place under designing requirement, oil pipe just suppresses 5MPa, bridging plug sets shear pin and is cut off under the effect of hydraulic cylinder, and compression packing element, extrudes anchor tooth, during pressure 10MPa, bridging plug section is locked while setting and is synchronously completed, continue to suppress >=15MPa, screw of giving up is pulled off, and the section of giving up is separated with bridging plug section, abrupt pressure reduction, completes operation of giving up;
3rd step, tests envelope operation, after having given up, on put forward the tube coupling length of a coiled tubing, drop into and test envelope steel ball, test envelope and set pin and cut off under the effect of hydraulic cylinder, test seal up, lower rubber cylinder start compression, when pressure reaches 15MPa, lock tube snaps in lock claw, realize locking, test that sealed packer is setting to be completed, now tubing pressure bust, liquid starts to enter oil jacket annular space from fluid hole and carries out testing envelope, oil pipe continues to suppress and remains on 15MPa, and voltage stabilizing 30 minutes is qualified.
In other embodiments, test sealed packer and sub-releasing axle plug also can adopt other structures, only need to ensure all to adopt hydraulic setting mode, and sub-releasing axle plug realizes giving up by differential slider mechanism.
Claims (10)
1. give up and test envelope integrated pipe column, it is characterized in that, comprise be connected in series from the top down test sealed packer and sub-releasing axle plug, test sealed packer and sub-releasing axle plug is hydraulic setting formula, sub-releasing axle plug has the bridging plug section being serially connected in and testing the section of giving up on sealed packer lower end and be connected to below the section of giving up, be provided with in the section of giving up for pressure above it be greater than bridging plug section set pressure time the section of giving up is given up differential slider mechanism, and to set and the ball-throwing type slider mechanism making to test sealed packer up/down perforation for making to test sealed packer after pitching testing in sealed packer to be provided with.
2. according to claim 1 giving up tests envelope integrated pipe column, it is characterized in that, test sealed packer comprise the central tube of downward-extension and periphery thereof are assembled from the top down successively test blockade buckle mechanism, test sealing cylinder, test block buckle mechanism by between the upper and lower every relative interworking test block pawl and test block cover form, test block pawl and test block cover be respectively be fixed on fixture on the periphery of central tube and along the longitudinal direction guiding movement be assemblied in the moving member on central tube, the side away from fixture of moving member is fixed with top and press-fits the slide block fitting over and test sealing cylinder one end, the other end top testing sealing cylinder press-fits and to fit on central tube on fixing adapter sleeve, adapter sleeve is sleeved on the periphery tested and block buckle mechanism.
3. according to claim 2 giving up tests envelope integrated pipe column, it is characterized in that, the side testing sealing cylinder dorsad of slide block is connected with guiding movement along the vertical direction and is assemblied in hydraulic cylinder on the periphery of central tube, the periphery upper sleeve gasket of hydraulic cylinder is equipped with the lock ring of guiding movement cooperation along the vertical direction, the downside of lock ring is connected with by testing offset nail the lower contact be fixed on central tube periphery, and between hydraulic cylinder and lower contact, be provided with that lock ring and central tube surround set gap, the internal face of lock ring is provided with the pressurized step being upward in and setting above gap, the tube wall of central tube offers the fluid hole being in and setting between gap and ball-throwing type slider mechanism.
4. according to claim 3 giving up tests envelope integrated pipe column, it is characterized in that, the periphery of lower contact is provided with the locking convex shoulder for stoping lock ring to move upward, and the inwall of lock ring is provided with the block step of block below locking convex shoulder.
5. according to claim 3 giving up tests envelope integrated pipe column, it is characterized in that, ball-throwing type slider mechanism comprise by test envelope set the ball seat that pin is connected to the up/down perforation in central tube, the outer wall shutoff of ball seat is on the inner aperture of fluid hole.
6. as claimed in any of claims 1 to 4 giving up tests envelope integrated pipe column, it is characterized in that, the packing element sleeve pipe of guiding movement suit along the vertical direction on pipe and periphery thereof in the packing element that bridging plug section comprises downward-extension, the periphery of packing element sleeve pipe is set with the bridging plug packing element that can stretch up and down, the top, upper end of bridging plug packing element is contained on the glue tube base of upper end connection of packing element sleeve pipe, top, lower end is contained in the anchor tooth main body that is connected with packing element its lower end, anchor tooth main body sets pin by bridging plug and to be connected in packing element on pipe, the downside of anchor tooth main body is equipped with anchor tooth by wedge surface cooperation, the downside wedge surface of anchor tooth is assemblied on anchor tooth seat, anchor tooth seat is fixed on the periphery of pipe in packing element, and in packing element pipe tube wall on offer the packing element pressing anchor tooth main body downwards for hydraulic medium and set hole.
7. according to claim 6 giving up tests envelope integrated pipe column, it is characterized in that, the upside of glue tube base is connected with sliding sleeve joint by glue tube base joint, the upside of sliding sleeve joint is connected with bridging plug lock claw inwardly, and in packing element the upper end of pipe be connected with bridging plug lock claw adaptive and between the upper and lower every lock claw cover, bridging plug lock claw and lock claw cover are configured for the bridging plug latching device be connected to the descending rear catch of glue tube base in bridging plug lock claw on lock claw cover periphery.
8. according to claim 7 giving up tests envelope integrated pipe column, it is characterized in that, the periphery of sliding sleeve joint is set with fishing sleeve, the lower end jacket wall of fishing sleeve offers the elongated hole of downward-extension, in elongated hole, guiding movement is equipped with and is connected to non-slipping block on sliding sleeve joint by salvaging pin along the vertical direction.
9. as claimed in any of claims 1 to 4 giving up tests envelope integrated pipe column, it is characterized in that, differential slider mechanism is comprised and is fixed on connector in the section of giving up and the interior bridging plug piston connected by pin of giving up thereof, the downside of connector is fixed with sliding sleeve joint, the lower end swelling of sliding sleeve joint is connected in the upper end of bridging plug section, and the pull bar be connected with in the lower end of bridging plug piston for making the lower end of sliding sleeve joint shrink when descending, what pull bar and bridging plug piston offer up/down perforation sets perforation.
10. as claimed in any of claims 1 to 4 giving up tests envelope integrated pipe column, it is characterized in that, the lower end of pull bar is provided with the annular convex shoulder of block below sliding sleeve joint.
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| CN201420763030.3U CN204419167U (en) | 2014-12-08 | 2014-12-08 | One is given up and is tested envelope integrated pipe column |
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| CN110847848A (en) * | 2019-12-12 | 2020-02-28 | 辽宁新华仪器有限公司 | Full latus rectum scale control shutoff tubular column instrument of motor-pumped well |
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