CN105114021B - The suspension sealer of installation speed tubing string and its feeding and recycling tool in oil pipe - Google Patents

The suspension sealer of installation speed tubing string and its feeding and recycling tool in oil pipe Download PDF

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Publication number
CN105114021B
CN105114021B CN201510589787.4A CN201510589787A CN105114021B CN 105114021 B CN105114021 B CN 105114021B CN 201510589787 A CN201510589787 A CN 201510589787A CN 105114021 B CN105114021 B CN 105114021B
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sealer
suspension
piston rod
inner tube
component
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CN105114021A (en
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不公告发明人
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Hunan Victor Petroleum Technology Service Co Ltd
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Hunan Victor Petroleum Technology Service Co Ltd
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Abstract

The invention discloses a kind of in oil pipe the suspension sealer of installation speed tubing string and its feeding and recycling tool, the suspension sealer include inner tube assembly and cover the outer tube assembly outside inner tube assembly;The upper end inner wall of said inner tube component is equipped with stopping step, and lower end is equipped with the first claw, passes through cutting member in the first claw and be equipped with baffle ring;The outer tube assembly includes the spreading component of tool elasticity, is located above the spreading component and makes the first pushing mechanism of spreading component spreading along said inner tube component slippage and the second pushing mechanism, be located at below the spreading component and make the releasing parts of spreading member reset along said inner tube component slippage, and seal member is equipped between the first pushing mechanism and the second pushing mechanism.The present invention is the Special complete equipment of the installation speed tubing string in oil pipe, and no replacement is required through the invention oil pipe to improve the fluid-carrying capability of oil pipe circulation passage can increase oil gas well production by installation speed tubing string in oil pipe.

Description

The suspension sealer of installation speed tubing string and its feeding and recycling tool in oil pipe
Technical field
The invention belongs to the device of well and workover treatment has been used in petroleum drilling and mining field, and in particular to one kind is in oil pipe The suspension sealer and its feeding and recycling tool of installation speed tubing string.
Background technique
In oil and gas exploitation industry, some wells permeable phenomenon can occur in the later period of production, occur it is permeable after due to Natural gas underproduces, and oil pipe is excessive, and gas flow rate reduces, and will cause fluid-carrying capability decline, eventually leads to oil gas well production Decline even stops production.After there is this phenomenon, use following method in oil industry for many years: 1) provisional artificial lift excludes Hydrops, but will appear same phenomenon again after a certain period of time;2) oil pipe of minor diameter is changed in workover treatment, improves fluid-carrying capability, But this method needs big workover cost high.
Summary of the invention
The object of the present invention is to provide a kind of no replacement is required oil pipe, in oil pipe the suspension sealer of installation speed tubing string and It is sent into and recycling tool, to improve the fluid-carrying capability of circulation passage, increase oil gas well production.
Suspension sealer provided by the invention including inner tube assembly and covers the outer tube assembly outside inner tube assembly;In described The upper end inner wall of tube assembly is equipped with stopping step, and lower end is equipped with the first claw, passes through cutting member in the first claw and be equipped with baffle ring; The outer tube assembly includes the spreading component of tool elasticity, is located above the spreading component and makes spreading along said inner tube component slippage The first pushing mechanism and the second pushing mechanism of component spreading are located at below the spreading component and make along said inner tube component slippage The releasing parts of spreading member reset are equipped with seal member between the first pushing mechanism and the second pushing mechanism;Described first and second Pushing mechanism is respectively equipped with the first, second shearing positioning element between said inner tube component and spreading component respectively;Described Releasing parts are positioned using occlusion structure connection between one claw and the releasing parts.
Said inner tube component includes the first top connection interconnected, the first mandrel, and first claw is located at the first core The lower end of axis, the stopping step are located at the upper end inner wall of the first top connection;The first pushing mechanism packet in the outer tube assembly The center tap for including the pushing cylinder covered in first top connection and covering on the first mandrel and being connect with the pushing cylinder, described second Pushing mechanism is the seat of honour, and the seal member includes covering on first mandrel between the center tap and the seat of honour Several packing elements;The releasing parts include lower seat and the first lower contact for connecting with lower seat;The first shearing positioning element It is located between the pushing cylinder and the first top connection;The spreading component using slip system be located between the seat of honour and lower seat with The seat of honour and the cooperation of lower seat, the second shearing positioning element are located between the seat of honour and slip system.
The running tool of suspension sealer provided by the invention, piston rod portion including tubulose and covers in piston rod portion On can be along the piston cylinder part that piston rod portion slides up and down;Formation and piston between the piston rod portion and piston cylinder part The plunger shaft being connected in the pipe of bar, the lower end of the piston cylinder part is equipped with to be matched with pushing mechanism in the suspension sealer Transmission parts, the lower end of the piston rod portion is equipped with to be filled with the connection that inner tube assembly matches in the suspension sealer It sets;The attachment device include be located at by sealing device the piston rod portion lower end and set bulge loop locking bar, with the work Rod portion connects and covers the lock tube on locking bar, is located on lock tube through the control of bulge loop on locking bar and the suspension sealer Closing piece that stopping step in inner tube assembly matches is sheared positioning element by third and positions the shearing of the locking bar positioning Device.
The piston rod portion includes the second top connection, the central tube being threadedly coupled with the second top connection and central tube spiral shell Line connection the piston rod formed is connected through a screw thread by several segments piston rod, the locking bar in the attachment device with most next section Piston rod connection;The piston cylinder part includes covering the upper joint sleeve and upper joint sleeve on the central tube and being threadedly coupled Be threadedly coupled by several segments piston cylinder corresponding with each section of piston rod, the plunger shaft includes mutual corresponding by each section The small piston chamber being respectively formed between piston rod and piston cylinder passes through third shearing positioning between neighbouring two sections of piston cylinders respectively Component connection, the transmission parts are connect with most next section of piston cylinder.
The shearing positioning device includes being located at the first shear sleeve in the lock tube and the locking bar being allowed to pass through, passing through The shearing ring that 4th shearing positioning element is connect with the first shear sleeve.
The recycling tool of suspension sealer provided by the invention, an including rhabodoid, the lower end of the rhabodoid with it is described The baffle ring of suspension sealer lower end matches, and is equipped with and the suspension sealer inner tube assembly around the middle part of the rhabodoid The second claw that the stopping step of upper end matches.
The rhabodoid includes variable buckle connector, the second mandrel, third top connection, the first spring, housing, second spring, limit Position set, slip ring, extension bar, cylinder, the second lower contact, third claw, the second shear sleeve, tail bottom;The variable buckle connector passes through interior spiral shell Line is connect with the second mandrel;Third top connection shears positioning element fixing sleeve on the second mandrel by the 5th, and uses external screw thread It is connect with housing;It is equipped in third top connection and covers the first spring on the second mandrel, be equipped with and covered on the second mandrel in housing Limit sleeve, the upper end of limit sleeve withstands the first lower spring end, is equipped in housing and covers second spring and slip ring on limit sleeve, Second claw is located at slip ring lower part;Second mandrel is connect by screw thread with extension bar;Extension bar is connected through a screw thread with cylinder; The lower end of cylinder is connect by screw thread with the second lower contact, and third claw is cased with outside the second lower contact;It second lower contact and covers The second shear sleeve thereon is fixed by the 6th shearing positioning element, and lower end and the tail bottom of the second lower contact are connected through a screw thread.
Beneficial effect
The present invention is the Special complete equipment of the installation speed tubing string in oil pipe, and no replacement is required through the invention, and oil pipe can The installation speed tubing string in oil pipe increases oil gas well production to improve the fluid-carrying capability of oil pipe circulation passage.
Illustrate technical solution of the present invention with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of present invention suspension sealer.
Fig. 2 is the structural schematic diagram of the running tool of present invention suspension sealer.
Fig. 3 be I in Fig. 2 at enlarged drawing.
Fig. 4 is the structural schematic diagram of the recycling tool of present invention suspension sealer.
Fig. 5 is the scheme of installation of minor diameter speed column.
Fig. 6 is that present invention suspension sealer is sent into process schematic.
Fig. 7 is present invention suspension sealer removal process schematic diagram.
Specific embodiment
See that Fig. 1, suspension sealer 1 of the invention include top connection 101, pushing cylinder 102, center tap 105, mandrel 108, packing element 109,110, the seat of honour 112, slips 114, slips cylinder 116, lower seat 117, claw 119, lower contact 124;The top connection 101 it is upper Inner wall is held to be equipped with stopping step 1011, the upper end of the lower end of top connection 101 and mandrel 108 is using being threadedly coupled and with O-ring 104 Sealing, lower end and the claw 119 of mandrel 108 be connected through a screw thread, 102 sets of pushing cylinder outside top connection 101, top connection 101 with push away It is equipped with shear pin 103 between cylinder 102 to position, center tap 105, the seat of honour 112, lower seat 117 and lower contact 124 are covered from top to bottom in core Outside axis 108, center tap 105 is connected with the lower thread of pushing cylinder 102, and fluting lock ring 106 is equipped with inside center tap 105 and uses spiral shell Line, which screws in mandrel 108, prevents center tap 105 from retreating, and center tap 105 is equipped with the anti-rotation stop of soket head cap screw 107 and falls, in center tap It is equipped with and is covered in two packing elements 109 on mandrel 108 and a packing element 110 between packing element 109 between 105 and the seat of honour 112, It is separated between packing element 109 and packing element 110 with spacer ring 111, is equipped between the seat of honour 112 and lower seat 117 and covers the card on mandrel 108 Watt device, slip system include slips cylinder 116, and 4 slips 114 and the seat of honour 112 are equipped in slips cylinder 116 and lower seat 117 is axial Cooperated by inclined-plane, has a spring 115 that it is made to keep return state in each slips 114,116 sets of slips cylinder at the seat of honour 112 Outside lower seat 117, connected between the seat of honour 112 and slips cylinder 116 by shear screw 113, between slips cylinder 116 and lower seat 117 It is positioned with cheese head screw 125, lower seat 117 is connected by screw thread and lower contact 124 and being equipped with positioning screw 118 prevents screw thread loose It is de-, position lower contact 124 using the connection of multiple spot threaded engagement structure 126 between claw 119 and lower contact 124, claw 119 It is inside and outside be respectively equipped with O-ring 120 and O-ring 211 and mandrel 108 and lower contact 124 seals, be equipped in the lower end of claw 119 Baffle ring 123, baffle ring 123 are connect with claw 119 by shear pin 122.It hangs sealer 1 and passes through the running tool of suspension sealer 2 promotion pushing cylinders 102 are realized setting.
See Fig. 2, the present invention hang sealer running tool 2 include top connection 201, central tube 204, upper joint sleeve 205, Piston cylinder, piston rod 210, pushing cylinder 212, latching connector 213, locking bar 215, lock tube 217, closing piece 216, shear sleeve 218, shearing ring 220, lower conehead 221, sealed steel ball 214;Central tube 204 is connect with 201 lower thread of top connection, and is sealed with O-ring 202, It is locked with limit screw 203;205 sets of the upper joint sleeve middle sections in central tube 204 are threadedly coupled, and use stop with central tube 204 Screw 203 locks;Piston rod is by three sections of piston rods of upper, middle and lower 210,210 ', 210 " to be connected through a screw thread and forms and with O-ring 209 Sealing, upper section piston rod 210 are threadedly coupled with the lower section of central tube 204, and are sealed with O-ring 209;Piston cylinder is by upper, middle and lower three Section piston cylinder 207,207 ', 207 " forms, is respectively equipped with cut groove, shear screw hole between neighbouring two sections of piston cylinders and leads to 206 connection of shearing nail is crossed, piston-cylinder is on central tube 204 and piston rod, three sections of piston cylinders 207,207 ', 207 " respectively with three " correspondence is combined into three small piston chambers to section piston rod 210,210 ', 210, and every section of piston rod, which is equipped with aperture 222, makes each small work Plug chamber is connected to the central passage of central tube;There is cut groove in the lower end of upper joint sleeve 205, and upper section piston cylinder 207 passes through shearing Screw 206 cooperates with the cut groove on upper joint sleeve 205 to be connect with upper joint sleeve 205, and the lower end of upper section piston cylinder 207, which is equipped with, cuts Grooving is connected with the shear screw hole of middle section piston cylinder 207 ' using shear screw 206 and is equipped between upper section piston rod 210 O-ring 208,209 makes its sealing, and the lower end of middle section piston cylinder 207 ' is equipped with cut groove, uses shear screw 206 and lower section piston Cylinder 207 " shear screw hole be connected and between middle section piston rod 210 ' be equipped with O-ring 208,209 make its sealing, lower section piston Cylinder 207 " lower end be equipped with cut groove by shear screw 206 be connected with the shear screw hole of lower joint sleeve 211 and with lower section work Stopper rod 210 " between be equipped with O-ring 208,209 make its sealing;Pushing cylinder 212 is threadedly coupled with lower joint sleeve 211;Lock tube 217 passes through Latching connector 213 and lower section piston rod 210 " are connect, latching connector 213 is connected by internal screw thread and with seal with O ring, while and lock tube 217 upper end is connected by external screw thread;Locking bar 215 is located in latching connector 213 and lock tube 217 between latching connector 213 and lock tube 217 Gap is slidably matched, and is equipped with seal with O ring;Four square holes are opened on lock tube 217, are equipped with a closing piece 216 and side in each square hole Interporal lacuna cooperates, and the muscle slightly wider than the square hole opened on lock tube 217 is along the circumferential direction equipped on closing piece 216, prevents closing piece 216 from lock It is dropped out in square hole on set 217;Shear sleeve 218 is located at by shear screw 219 and the composition shearing positioning device of shearing ring 220 With 217 clearance fit of lock tube in lock tube 217, and the inner hole size of shear sleeve 218 can be such that the lower end of locking bar 215 smoothly leads to It crosses;Lower conehead 221 is connect by external screw thread with lock tube 217, and just withstands the shear sleeve 218 in lock tube 217, lower conehead 221 Inner hole shearing ring 220 can be made to pass through;The upper end of locking bar 215 is equipped with sealing taper hole and the cooperation of sealed steel ball 214 seals, The lower end of locking bar 215 is equipped with a circle bulge loop 2151 and matches with the closing piece 216 on lock tube 217.Sending for sealer is hung when use Enter tool 2 to be connected by top connection 201 with top coiled tubing.
See Fig. 4, the recycling tool 3 that the present invention hangs sealer includes variable buckle connector 301, recycling mandrel 303, top connection 304, spring 305, housing 306, spring 307, limit sleeve 308, slip ring 309, claw 310, extension bar 312, cylinder 314, lower contact 315, claw 316, shear sleeve 317, tail bottom 319;Variable buckle connector 301 is connect by internal screw thread with mandrel 303 is recycled, and with O shape 302 sealing of circle;Top connection 304 is connected on recycling mandrel 303, and with external screw thread and housing 306 by 320 fixing sleeve of shear pin It connects;It is equipped with the spring 305 covered on recycling mandrel 303 in top connection 304, is equipped with and is covered on recycling mandrel 303 in housing 306 Limit sleeve 308, the upper end of limit sleeve 308 withstand 305 lower end of spring, are equipped in housing 306 and cover the spring on limit sleeve 308 307 and slip ring 309,309 lower part of slip ring is equipped with 4 claws 310;Recycling mandrel 303 is connect by screw thread with extension bar 312, and It is sealed with O-ring 311;Extension bar 312 is externally provided with 2 O-rings 313, and is connected through a screw thread with cylinder 314;The lower end of cylinder 314 is logical It crosses screw thread to connect with lower contact 315, claw 316 is cased with outside lower contact 315;The shear sleeve 317 of lower contact 315 and set on it Fixed by 6 shear pins 318, lower end and the tail bottom 319 of lower contact 315 are connected through a screw thread.In use, suspension sealer Recycling tool 3 is threadedly attached to coiled tubing by variable buckle connector 301.
The shear pin, shear screw are shearing positioning element.
Working principle
The installation of minor diameter speed column as shown in figure 5, oil pipe 4 has been mounted to the flow string in casing 6 before being, Minor diameter speed column 5 is sealed against being fixed in oil pipe 4 by hanging sealer 1, and the channel of circulation is reduced, well is improved Fluid-carrying capability.The installation for hanging sealer includes feeding and removal process.
One, suspension sealer is sent into process
Suspension sealer of the invention is sent into process as shown in fig. 6, being divided into three processes: A) it is connect with suspension sealer; B) pressurize setting procedure;C it) gives up process.
A) connect with suspension sealer: as shown in Figure 6, when running tool 2 is sent into, the lock tube 217 of running tool 2 is inserted Enter to hang in the top connection 101 of sealer 1, closing piece 216 is ejected by the bulge loop 2151 of locking bar 215, and lock connects on suspension sealer 1 In first 101 stopping step 1011, tripping in is suspended in midair entirely through the coiled tubing that the top connection 201 with running tool 2 is connect In well, until designated depth.
B) pressurize setting procedure: when starting setting, ground passes through running tool 2 to coiled tubing internal pressurization, liquid 201 inner hole of top connection enters running tool 2, is sealed in lower part by sealed steel ball 214 and locking bar 215.Therefore, pressure passes through center The entrance of aperture 222 and each small piston chamber on pipe 204 and each section of piston rod, and push piston cylinder to underground moving, it can cut at this time Disconnected shear pin 206(or more piston cylinder can be with relative motion in stroke range), and pushing cylinder 212 is pushed to act on suspension sealer Pushing cylinder 102, as shown in Figure 6 (b).At this point, pushing cylinder 102 cuts shear pin 103, start to push center tap 105, and squeeze packing element 109,110 spreading, and squeezed out slips 114 by the seat of honour 112, so that slips 114 is firmly grasped 4 inner wall of oil pipe, realizes suspension sealer 1 Setting (referring to Fig. 1, Fig. 5).
C) give up process: be forced into it is setting after the completion of pressure continue to increase, shear sleeve 218, shear screw 219, shearing ring The shearing force of the shearing positioning device of 220 compositions cannot block the thrust that pressure is formed to sealed steel ball 214 and locking bar 215 again When, shear screw 219 is cut, and pressure is pushed forward sealed steel ball 214, locking bar 215, shearing ring 220 to top, at this time closing piece 216 It drops into outside the bulge loop 2151 of locking bar 215, as shown in Figure 6 (c), running tool 2 is given up with suspension sealer 1 at this time.
Two, sealer removal process is hung
Suspension sealer removal process of the invention is as shown in fig. 7, the recycling insertion of tool 3 is hung in sealer 1, benefit First catch on the gear on suspension sealer 1 from down in the unlocked position B of suspension sealer 1 with the claw 316 of 3 lower end of recycling tool Ring 123 upwards mentions cut shear pin 122, at this time hang sealer 1 claw 119 and baffle ring 123 be detached from, therefore claw 119 with Threaded engagement structure 126 between lower contact 124 is released, and lower seat 117 moves downwardly together with lower contact 124, slips 114 And packing element 109,110 resets, and makes to hang sealer 1 from the release of oil pipe 4 (referring to Fig. 1, Fig. 5), recycling tool 3 is salvaging position A Place's claw 310 catches suspension sealer 1, mentions coiled tubing upwards for the tubing string 5 for hanging sealer 1 and connection and is recovered to ground Face.

Claims (5)

1. a kind of complete set of equipments for the installation speed tubing string in oil pipe, including the feeding for hanging sealer, hanging sealer The recycling tool of tool and suspension sealer, it is characterized in that:
The suspension sealer includes inner tube assembly and covers the outer tube assembly outside inner tube assembly;In the upper end of said inner tube component Wall is equipped with stopping step, and lower end is equipped with the first claw, passes through cutting member in the first claw and be equipped with baffle ring;The outer tube assembly packet The spreading component of tool elasticity is included, is located above the spreading component and makes the first of spreading component spreading along said inner tube component slippage Pushing mechanism and the second pushing mechanism are located at below the spreading component and make spreading member reset along said inner tube component slippage Releasing parts are equipped with seal member between the first pushing mechanism and the second pushing mechanism;First and second pushing mechanism respectively with The first, second shearing positioning element is respectively equipped between said inner tube component and spreading component;First claw is released with described Putting positions releasing parts using occlusion structure connection between component;
The running tool of the suspension sealer includes the piston rod portion of tubulose and cover can be along piston rod on piston rod portion The piston cylinder part that part slides up and down;It is formed between the piston rod portion and piston cylinder part and is connected in the pipe of piston rod Plunger shaft, the lower end of the piston cylinder part be equipped with and the suspension sealer described in the biography that matches of the first pushing mechanism Dynamic component, the lower end of the piston rod portion, which is equipped with, hangs the attachment device that inner tube assembly matches in sealer with described;Institute Stating attachment device includes the locking bar and the piston bar portion for being located at the piston rod portion lower end by sealing device and setting bulge loop Divide connection and covers the lock tube on locking bar, is located on lock tube through the bulge loop control and the suspension sealer inner tube group on locking bar Closing piece that stopping step on part matches is sheared positioning element by third and makes the shearing positioning device of the locking bar positioning;
The recycling tool of the suspension sealer includes a rhabodoid, and the lower end of the rhabodoid is equipped with and the suspension sealer The third claw that the baffle ring of lower end matches is equipped with and the suspension sealer inner tube assembly around the middle part of the rhabodoid The second claw that the stopping step of upper end matches.
2. the complete set of equipments according to claim 1 for the installation speed tubing string in oil pipe, it is characterized in that the suspension The inner tube assembly of sealer includes the first top connection interconnected, the first mandrel, and first claw is located at the first mandrel Lower end, the stopping step are located at the upper end inner wall of the first top connection;The first pushing mechanism in the outer tube assembly includes set Pushing cylinder in first top connection and the center tap for covering on the first mandrel and connecting with the pushing cylinder, described second pushes Component is the seat of honour, if the seal member includes covering on first mandrel between the center tap and the seat of honour Dry glue cylinder;The releasing parts include lower seat and the first lower contact for connecting with lower seat;The first shearing positioning element is located at Between the pushing cylinder and the first top connection;The spreading component is located between the seat of honour and lower seat and the seat of honour using slip system Cooperate with lower seat, the second shearing positioning element is located between the seat of honour and slip system.
3. the complete set of equipments according to claim 2 for the installation speed tubing string in oil pipe, it is characterized in that the suspension The piston rod portion of the running tool of sealer includes the second top connection, the central tube being threadedly coupled with the second top connection, in The heart pipe screw thread connection the piston rod formed is connected through a screw thread by several segments piston rod, the locking bar in the attachment device with most Next section of piston rod connection;The piston cylinder part include cover on the central tube and be threadedly coupled upper joint sleeve, with it is upper Connector sleeve be threadedly coupled by several segments piston cylinder corresponding with each section of piston rod, the plunger shaft includes mutual by each section The small piston chamber being respectively formed between corresponding piston rod and piston cylinder is cut respectively by third between neighbouring two sections of piston cylinders Positioning element connection is cut, the transmission parts are connect with most next section of piston cylinder.
4. the complete set of equipments for the installation speed tubing string in oil pipe according to claim 3, it is characterized in that the suspension is close The shearing positioning device for sealing the running tool of device include be located at the lock tube it is interior and allow the locking bar to pass through the first shear sleeve, The shearing ring being connect by the 4th shearing positioning element with the first shear sleeve.
5. the complete set of equipments of the installation speed tubing string in oil pipe are used for according to claim 1 or described in 4, it is characterized in that the suspension The rhabodoid of the recycling tool of sealer includes variable buckle connector, the second mandrel, third top connection, the first spring, housing, the second bullet Spring, limit sleeve, slip ring, extension bar, cylinder, the second lower contact, third claw, the second shear sleeve, tail bottom;The variable buckle connector passes through Internal screw thread is connect with the second mandrel;Third top connection shears positioning element fixing sleeve on the second mandrel by the 5th, and outside Screw thread is connect with housing;It is equipped in third top connection and covers the first spring on the second mandrel, be equipped with and covered in the second core in housing The first lower spring end is withstood in limit sleeve on axis, the upper end of limit sleeve, be equipped in housing cover second spring on limit sleeve and Slip ring, second claw are located at slip ring lower part;Second mandrel is connect by screw thread with extension bar;Extension bar and cylinder pass through spiral shell Line connection;The lower end of cylinder is connect by screw thread with the second lower contact, and third claw is cased with outside the second lower contact;Second lower contact It is fixed with the second shear sleeve of set on it by the 6th shearing positioning element, the lower end and tail bottom of the second lower contact pass through screw thread Connection.
CN201510589787.4A 2015-09-17 2015-09-17 The suspension sealer of installation speed tubing string and its feeding and recycling tool in oil pipe Active CN105114021B (en)

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CN201510589787.4A CN105114021B (en) 2015-09-17 2015-09-17 The suspension sealer of installation speed tubing string and its feeding and recycling tool in oil pipe

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Application Number Priority Date Filing Date Title
CN201510589787.4A CN105114021B (en) 2015-09-17 2015-09-17 The suspension sealer of installation speed tubing string and its feeding and recycling tool in oil pipe

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CN105114021B true CN105114021B (en) 2019-01-15

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CN107130936B (en) * 2017-06-14 2023-06-23 湖南唯科拓石油科技服务有限公司 Production packer for multichannel oil-gas well
CN107939327A (en) * 2018-01-23 2018-04-20 东营百华石油技术开发有限公司 A kind of anchor that will be blocked pipe and be positioned on casing

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