CN204002659U - A kind of multifunctional bridge plug dropping feeder - Google Patents
A kind of multifunctional bridge plug dropping feeder Download PDFInfo
- Publication number
- CN204002659U CN204002659U CN201420421203.3U CN201420421203U CN204002659U CN 204002659 U CN204002659 U CN 204002659U CN 201420421203 U CN201420421203 U CN 201420421203U CN 204002659 U CN204002659 U CN 204002659U
- Authority
- CN
- China
- Prior art keywords
- threaded
- sleeve
- packing element
- lock pawl
- bridge plug
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000012360 testing method Methods 0.000 claims abstract description 42
- 238000012856 packing Methods 0.000 claims description 52
- 239000003292 glue Substances 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 230000001012 protector Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000008961 swelling Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000010079 rubber tapping Methods 0.000 description 2
- 206010016825 Flushing Diseases 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 210000003456 pulmonary alveoli Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
A multifunctional bridge plug dropping feeder, belongs to oilfield downhole operation technology field.It comprises positioning section, pressure testing section and salvaging section, and described positioning section is comprised of active segment and canned paragraph.The utility model can directly be checked the pressure testing of bridging plug sealing, simplified bridging plug water blockoff operation, alleviated labour intensity, and the utility model can separately be used various piece, can reach the actual conditions of each working portion of control constantly, increase work efficiency and reduce costs.
Description
Technical field
The utility model relates to a kind of multifunctional bridge plug dropping feeder, belongs to oilfield downhole operation technology field.
Background technology
Latter period of oilfield development, bridging plug water blockoff is a kind of main water pack off technology.Conventional way is that dropping feeder is directly connected with bridging plug, by oil pipe, is delivered to design attitude, suppresses and gives up, and then trips out delivery tubing string; Lower packet is tested to bridging plug sealing.Conventional dropping feeder only possesses the bridging plug of delivery function, does not possess the envelope of testing function, and can not the intact salvaging of bridging plug out cause current bridging plug water-blocking operation operation loaded down with trivial details, and the cycle is long, and expense is high, and labour intensity is large.
Utility model content
The technical problems to be solved in the utility model is that conventional dropping feeder only possesses and delivers bridging plug function, does not possess the envelope of testing function, and can not the intact salvaging of bridging plug out, for addressing the above problem, provide a kind of multifunctional bridge plug dropping feeder.
The purpose of this utility model realizes in the following manner:
A multifunctional bridge plug dropping feeder, is characterized in that: it comprises positioning section and pressure testing section, and described positioning section is comprised of active segment and canned paragraph, and positioning section is put in sleeve, salvages active segment when canned paragraph is fixed in sleeve, pressure testing section is put in sleeve, and pressure testing section does not contact with the canned paragraph of positioning section, when pressure testing section packing element contacts with sleeve lining, and stops when note is pressed there is no pressure drop, salvages pressure testing section, finally by salvaging section, salvage the canned paragraph in positioning section, described positioning section comprises fishing sleeve, it is that face contacts and is fastenedly connected by fastening devices that fishing sleeve has slotted hole end and glue tube base joint, discharging cover is threaded with lock pawl I, discharging cover is connected with glue tube base joint screw thread, glue tube base joint with glue tube base for being threaded, central tube II is threaded with connector, pull bar piston contacts at connector centre bore inner face, pull bar piston is connected with pull rod screw, the pull bar conical surface and snap-fit connectors cone plane-plane contact, connector is threaded with snap-fit connectors, snap-fit connectors is threaded with lock pawl seat, lock pawl seat is threaded with central tube III, central tube III is threaded with lower contact, wedging body and packing element sleeve pipe I gap location have seal, glue tube base with wedging body for being threaded, wedging body precession press seal part, packing element sleeve pipe I has step one end to contact with glue tube base step place face, packing element sleeve pipe I is connected with anchor tooth main body screw, silk pressing is pressed on Mao Ya main center seal be connected also with anchor tooth main body screw in, packing element I is enclosed within wedging body smaller diameter end, wedging body cover is connected with anchor tooth main body screw, anchor tooth is stuck in the draw-in groove of anchor tooth main body and anchor tooth seat, lower contact I is threaded with anchor tooth seat, plug is threaded with lower contact I, described salvaging section comprises top connection III, and top connection III is with mandrel for being threaded, and bailer grab is enclosed within on mandrel, and spring housing is compressed between top connection and bailer grab on mandrel, under the effect of pressure, anchor tooth moves with sleeve lining and contacts along anchor tooth main body, and wedging body enters into packing element endoporus, and the packing element swelling contacts with sleeve lining, and lock pawl I is connected with lock pawl seat I, and the lower end of positioning section is fixed in sleeve, forms canned paragraph.
Described pressure testing section comprises top connection II, top connection II is that face contacts with lock pawl seat I, lock pawl seat II is that face contacts with lock pawl II, lock pawl seat II and backwash are overlapped and are contacted for face, backwash cover with adjustable ring for being threaded, lock ring with adjustable ring for being threaded, separate lock ring with central tube IV for being threaded, packing element sleeve pipe II with lock ring for being threaded, packing element sleeve pipe II is that face contacts with adjustable ring, packing element sleeve pipe II is through shoulder protector, packing element II, spacer ring with lower piston for being threaded, cylinder sleeve is that fitting face is connected with lower piston, cylinder sleeve with lower contact II for being threaded, central tube IV and top connection II, lower contact II is for being threaded, test envelope piston with pressed joint for being threaded, pressed joint is being pressed valve seat to be fixed on and is being tested on envelope piston, steel ball is that face contacts with valve seat, shear pin I and shear pin II are used for fixing tests envelope piston.
Described wedging body minor diameter and major diameter transition position are the conical surface;
Described snap-fit connectors has long slot bore on the circumferencial direction of male thread one end, and endoporus is tapered hole.
Described pull bar does not have screw thread one end to have boss, has tapering identical with snap-fit connectors tapering on boss.
The box thread of described lock pawl I is contrary with the male thread tooth form of lock pawl seat I.
Described lock pawl II is having screw thread one end to have uniformly elongated slot along periphery, and form of thread is that crest is to become 30 ° of angles left with horizon.
Described lock ring threaded one end tooth form is that crest becomes 30 ° of angles to the right with horizon.
There is the conical surface described mandrel one end, and diameter increases gradually, there being centre bore bottom, conical surface one end to be distributed with uniform aperture on circumference, with mandrel centre bore UNICOM.
Described bailer grab has uniformly elongated slot on the circumferencial direction of screw thread one end.
With respect to prior art, the utility model can directly be checked the pressure testing of bridging plug sealing, simplified bridging plug water blockoff operation, alleviated labour intensity, and the utility model can separately be used various piece, can reach the actual conditions of each working portion of control constantly, increase work efficiency and reduce costs.
Accompanying drawing explanation
Fig. 1 is positioning section structural representation of the present utility model.
Fig. 2 is the A section schematic diagram of Fig. 1.
Fig. 3 is the B section schematic diagram of Fig. 1.
Fig. 4 is the C section schematic diagram of Fig. 1.
Fig. 5 is the D section schematic diagram of Fig. 1.
Fig. 6 is pressure testing segment structure schematic diagram of the present utility model.
Fig. 7 is salvaging segment structure schematic diagram of the present utility model.
Wherein, the 101st, top connection I; The 103rd, upper cylinder sleeve; 104 upper pistons; 105 central tube I; Cylinder sleeve in 106; 107 adapter sleeves; 110 intermediate sleeve; 111 fishing sleeves; 112 central tube II; 113 lock pawl I; 114 pull bar pistons; 115 connectors; 116 discharge cover; 118 pull bars; 119 glue tube base joints; 120 snap-fit connectors; 121 non-slipping blocks; 122 hexagon socket countersunk flat cap head screws; 123 lock pawl seat I; 124 glue tube bases; 125 packing element sleeve pipe I; 126 wedging bodies; 128 central tube III; 129 packing element I; 130 wedging body covers; 131 anchor tooth main bodys; 133 silk pressings; 135 anchor tooth seats; 136 lower contact I; 137 plugs; 138 anchor teeth; 139 pins;
201 top connection II; 202 lock pawl seat II; 203 lock pawl II; 204 backwash covers; 205 separate lock ring; 206 lock rings; 207 adjustable rings; 208 packing element sleeve pipe II; 209 central tube IV; 210 spacer rings; 211 packing element II; 212 shoulder protectors; 213 lower pistons; 214 shear pin II; 215 test envelope piston; 216 lower contact II; 217 steel balls; 218 valve seats; 219 shear pin I; 220 pressed joints; 221 cylinder sleeves;
301 top connection III; 302 springs; 303 guide pads; 304 bailer grabs; 305 mandrels; 306 interior hexagonal holding screws.
The specific embodiment
If Fig. 1 is to as shown in Fig. 7, the utility model positioning section comprises top connection I 101, upper cylinder sleeve 103 one end are threaded with top connection I 101, the little one end of middle cylinder sleeve 106 diameters is inserted in 103 contacts of cylinder sleeve, the other end is threaded with intermediate sleeve 110, the porose one end of central tube I 105 is threaded with top connection I 101 through upper piston 104 centre bores, central tube I 105 one end are threaded with adapter sleeve 107 smaller diameter end, in upper cylinder sleeve 103, there are 104 contacts of upper piston, adapter sleeve 107 is that face contact connects in the large side of middle cylinder sleeve 106 internal diameters, intermediate sleeve 110 and middle cylinder sleeve 106, fishing sleeve 111 is face contact, fishing sleeve 111 has slotted hole end and glue tube base joint 119 to contact for face, non-slipping block 121 is placed in fishing sleeve 111 slotted holes and with hexagon socket countersunk flat cap head screw 122, non-slipping block 121 is locked on glue tube base joint 119, glue tube base joint 119 with glue tube base 124 for being threaded, glue tube base joint 119 is threaded with release cover 116, discharging cover 116 is threaded with lock pawl I 113, central tube II 112 is threaded with adapter sleeve 107 with small bore end, threaded one end is threaded with connector 115 in addition, connector 115 is threaded with a sliding mouthful joint 120, sliding mouthful joint 120 is threaded with lock pawl seat I 123, lock pawl seat I 123 is threaded with central tube III 128, central tube III 128 is threaded with lower contact I 136, pull bar piston 114 is in connector 115 centre bore inner face contacts, pull bar piston 114 is threaded with pull bar 118, pull bar 118 conical surfaces and snap-fit connectors 120 cone plane-plane contacts, wedging body 126 has seal with packing element sleeve pipe I 125 gap locations, glue tube base 124 with wedging body 126 for being threaded, wedging body 126 precessions press seal part, packing element sleeve pipe I 125 has step one end to contact with glue tube base 124 step place faces, packing element sleeve pipe I 125 is threaded with anchor tooth main body 131, silk pressing 133 is pressed on anchor tooth main body 131 central seal be threaded also with anchor tooth main body 131 in, packing element I 129 is enclosed within wedging body 126 smaller diameter end, wedging body cover 130 is threaded with anchor tooth main body 131, anchor tooth 138 is stuck in anchor tooth main body 131 and anchor tooth seat 135 draw-in grooves, lower contact I 136 is threaded with anchor tooth seat 135, plug 137 is threaded with lower contact I 136.
Described pressure testing section comprises top connection II 201, top connection II 201 and lock pawl seat II 202 contact for face, lock pawl seat II 202 with lock pawl II 203 and contact for face, lock pawl seat II 202 and backwash are overlapped 204 and are contacted for face, backwash cover 204 with adjustable ring 207 for being threaded, lock ring 206 with adjustable ring 207 for being threaded, separate lock ring 205 with central tube IV 209 for being threaded, packing element sleeve pipe II 208 with lock ring 206 for being threaded, packing element sleeve pipe II 208 and adjustable ring 207 contact for face, packing element sleeve pipe II 208 is through shoulder protector 212, packing element II 211, spacer ring 210 with lower piston 213 for being threaded, cylinder sleeve 221 and lower piston 213 are connected for fitting face, cylinder sleeve 221 with lower contact II 216 for being threaded, central tube IV 209 and top connection II 201, lower contact II 216 is for being threaded, test envelope piston 215 with pressed joint 220 for being threaded, pressed joint 220 is being pressed valve seat 218 to be fixed on and is being tested on envelope piston 215, steel ball 217 and valve seat 218 contact for face, shear pin I 219 is used for fixing and tests envelope piston 215 with shear pin II 214.
Described salvaging section comprises top connection III 301, and top connection III 301 is with mandrel 305 for being threaded, and bailer grab 304 is enclosed within on mandrel 305, and spring 302 is enclosed within on mandrel 305 and is compressed between top connection III 301 and bailer grab 304.
The course of work of the present utility model is as follows: pressure injects from top connection I 101, pressure is by central tube I 105, hole in central tube II 112, make upper piston 104 and intermediate sleeve 110 pressurized respectively, after both are under pressure, cylinder sleeve 106 during upper piston 104 promotes, intermediate sleeve 110 moves down, now intermediate sleeve 110 is under pressure and promotes fishing sleeve 111 simultaneously, glue tube base joint 119, discharge cover 116, lock pawl I 113, glue tube base 124, wedging body 126, packing element I 129, wedging body cover 130, anchor tooth main body 131 moves down, anchor tooth 138 moves to sleeve and contacts, the stressed continuation of wedging body 126 is moved to anchor tooth end, now packing element I 129, wedging body cover 130 can not move, wedging body 126 band tapering one end can enter into packing element I 129 centre bores, the packing element I 129 swelling contacts with sleeve lining, wedging body 126 smaller diameter end enter between wedging body cover 130 and packing element sleeve pipe I 125.Now, pull bar piston 114 is under pressure and cuts off pin 139 and move down, the tapering face of pull bar 118 makes external screw-thread and lock pawl seat I 123 threaded engagement by stressed the swelling of cunning mouthful joint 120 tapering faces owing to assembling before, now pull bar 118 tapering faces are separated with sliding mouthful of joint 120 tapering faces, a sliding mouthful of joint 120 rebound original state and lock pawl seat I 123 thread separation, lock pawl I 113 now moves to lock pawl seat I 123 positions, because lock pawl 113 ages of a draught animal of I are consistent with the direction of motion, can move to smoothly lock pawl seat I 123 screw thread places, stop after note pressure, because the alveolus of anchor tooth 138 is that downward direction is engaged in sleeve inner side, lock pawl I 113 can not be got back to original position together with locking the screw buckle of pawl seat I 123, make packing element I 129 and sleeve lining close contact, be fixed on sleeve inner side.Salvage afterwards movable end, because intermediate sleeve 110 and fishing sleeve 111 contact for face, now, put on joint I 101, upper cylinder sleeve 103, upper piston 104, middle cylinder sleeve 106, central tube I 105, adapter sleeve 107, central tube II 112, intermediate sleeve 110, connector 115, pull bar piston 114, pull bar 118, sliding mouthful joint 120, together proposed sleeve.
Then pressure testing section is put into sleeve, now positioning section canned paragraph has completed fixing, pressure testing section is put into from positioning section canned paragraph and has a segment distance, first steel ball 217 is put into pressure testing section central tube IV 209, now steel ball 217 contacts with 218 of valve seats, then start injection pressure, when pressure reaches after certain value, testing envelope piston 215 can cut off shear pin II 214 to move downward, when testing envelope piston 215 and moved the tapping of central tube IV 209, pressure can reduce suddenly, pressure flows out through the tapping of central tube IV 209, enter into lower piston 213 and central tube IV 209, gap between lower contact II 216, now test envelope piston 215 below flutings in 219 contacts of shear pin I, along with pressure increases, test envelope piston 215 and continue to move downward, because cylinder sleeve 221 and lower piston 213 contact for fitting face, now pressure increases gradually, promoting lower piston 213 moves upward, now due to packing element sleeve pipe II 208 and lower piston 213, lock ring 206 is for being threaded, lock ring 206 moves upward together with lower piston 213, the stressed length of packing element II 11 can reduce, on periphery, be squeezed and can increase gradually until fully contact with internal surface of sleeve pipe, when packing element II 211 fully contacts with sleeve lining, lock ring 206 is interlocked with lock pawl II 23, when pressure continues to increase, testing envelope piston 15 cuts off shear pin I 219, testing envelope piston 215 continues to move downward, when testing the hole of envelope on piston 215 and the hole intercommunication in lower contact II 216, pressure can reduce, pressure outwards flows out through hole, now pressure is discharged between positioning section canned paragraph packing element I 129 and pressure testing section packing element II 211, when pressure reaches certain value, stop note pressure and do not occur pressure drop, illustrate that canned paragraph packing element I 129 and bobbin seal are good, this just explanation, positioning section canned paragraph packing element I 129 has contacted with sleeve lining fully with pressure testing section packing element II 211.Afterwards pressure testing section is pulled out, because pressure testing section top connection II 201 with central tube IV 209 for being threaded, separate lock ring 205 with central tube IV 209 for being threaded, pull-up top connection II 201, separating lock ring 205 can move upward together, the tapering of separating lock ring 205 endoporus is the same with the tapering in lock pawl II 203, lock pawl II 203 has screw thread one end to have in a circumferential direction equally distributed elongated slot, flexible, when separating lock ring 205, move upward, along the conical surface, move, owing to separating the interior hole dimension of lock ring 205, be less than lock pawl II 203 outside dimensions, separating lock ring 205 can press little by the external diameter of lock pawl II 203, now locking pawl overlaps 206 screw threads and separates with the screw thread in lock pawl II 203, separately, packing element II 211 will return to original form, now the elasticity of packing element II 211 is being tried hard to recommend adjustable ring 207 and is being moved upward, make packing element II 2011 reinstatement states, pressure testing section is separated with sleeve, salvage smoothly pressure testing section.
Can carry out well-repairing work, after well-repairing work completes, salvaging section is put into sleeve, when will arrive positioning section canned paragraph and be fixed on the part in sleeve, start by mandrel 305 well-flushings, make the screw thread on positioning section canned paragraph fishing sleeve 111 there is no impurity, by salvaging the section screw thread of bailer grab 304 and the screw thread of positioning section canned paragraph fishing sleeve 111, screw, then on, put forward positioning section top connection III 301, in mandrel 305 meetings together, carry, mandrel 305 conical surfaces can make bailer grab 304 screw threads fully and positioning section canned paragraph fishing sleeve 111 threaded engagement, in positioning section canned paragraph, fishing sleeve 111 moves upward, and can to make to lock pawl I 113 separated with lock pawl cover I 123, packing element I 129 can be recovered original state, anchor tooth main body 131 moves upward and makes anchor tooth 138 return to original state, positioning section canned paragraph is separated with sleeve, positioning section canned paragraph is salvaged to sleeve smoothly, work completes.
Claims (10)
1. a multifunctional bridge plug dropping feeder, is characterized in that: it comprises positioning section and pressure testing section, and described positioning section is comprised of active segment and canned paragraph, and positioning section is put in sleeve, salvages active segment when canned paragraph is fixed in sleeve, pressure testing section is put in sleeve, and pressure testing section does not contact with the canned paragraph of positioning section, when pressure testing section packing element contacts with sleeve lining, and stops when note is pressed there is no pressure drop, salvages pressure testing section, finally by salvaging section, salvage the canned paragraph in positioning section, described positioning section comprises fishing sleeve, it is that face contacts and is fastenedly connected by fastening devices that fishing sleeve has slotted hole end and glue tube base joint, discharging cover is threaded with lock pawl I, discharging cover is connected with glue tube base joint screw thread, glue tube base joint with glue tube base for being threaded, central tube II is threaded with connector, pull bar piston contacts at connector centre bore inner face, pull bar piston is connected with pull rod screw, the pull bar conical surface and snap-fit connectors cone plane-plane contact, connector is threaded with snap-fit connectors, snap-fit connectors is threaded with lock pawl seat, lock pawl seat is threaded with central tube III, central tube III is threaded with lower contact, wedging body and packing element sleeve pipe
igap location has seal, and glue tube base for being threaded, is wedged body precession press seal part, packing element sleeve pipe with wedging body
ithere is step one end to contact with glue tube base step place face, packing element sleeve pipe
ibe connected with anchor tooth main body screw, silk pressing is pressed on Mao Ya main center seal, packing element be connected also with anchor tooth main body screw in
ibe enclosed within wedging body smaller diameter end, wedging body cover is connected with anchor tooth main body screw, and anchor tooth is stuck in the draw-in groove of anchor tooth main body and anchor tooth seat, and lower contact I is threaded with anchor tooth seat, and plug is threaded with lower contact I, described salvaging section comprises top connection III, and top connection III is with mandrel for being threaded, and bailer grab is enclosed within on mandrel, and spring housing is compressed between top connection and bailer grab on mandrel, under the effect of pressure, anchor tooth moves with sleeve lining and contacts along anchor tooth main body, and wedging body enters into packing element endoporus, and the packing element swelling contacts with sleeve lining, lock pawl
iwith lock pawl seat
iconnect, the lower end of positioning section is fixed in sleeve, forms canned paragraph.
2. a kind of multifunctional bridge plug dropping feeder according to claim 1, is characterized in that: described pressure testing section comprises top connection II, top connection II and lock pawl seat
ifor face contact, lock pawl seat II is that face contacts with lock pawl II, lock pawl seat II and backwash are overlapped and are contacted for face, backwash cover with adjustable ring for being threaded, lock ring with adjustable ring for being threaded, separate lock ring with central tube IV for being threaded, packing element sleeve pipe II with lock ring for being threaded, packing element sleeve pipe II is that face contacts with adjustable ring, packing element sleeve pipe II is through shoulder protector, packing element II, spacer ring with lower piston for being threaded, cylinder sleeve is that fitting face is connected with lower piston, cylinder sleeve with lower contact II for being threaded, central tube IV and top connection II, lower contact II is for being threaded, test envelope piston with pressed joint for being threaded, pressed joint is being pressed valve seat to be fixed on and is being tested on envelope piston, steel ball is that face contacts with valve seat, shear pin
ibe used for fixing and test envelope piston with shear pin II.
3. a kind of multifunctional bridge plug dropping feeder according to claim 1, is characterized in that: described wedging body minor diameter and major diameter transition position are the conical surface.
4. a kind of multifunctional bridge plug dropping feeder according to claim 1, is characterized in that: described snap-fit connectors has long slot bore on the circumferencial direction of male thread one end, and endoporus is tapered hole.
5. a kind of multifunctional bridge plug dropping feeder according to claim 1, is characterized in that: described pull bar does not have screw thread one end to have boss, has tapering identical with snap-fit connectors tapering on boss.
6. a kind of multifunctional bridge plug dropping feeder according to claim 1, is characterized in that: described lock pawl
ibox thread and lock pawl seat
imale thread tooth form contrary.
7. a kind of multifunctional bridge plug dropping feeder according to claim 1, is characterized in that: described lock pawl II is having screw thread one end to have uniformly elongated slot along periphery, and form of thread is that crest is to become 30 ° of angles left with horizon.
8. a kind of multifunctional bridge plug dropping feeder according to claim 1, is characterized in that: described lock ring threaded one end tooth form is that crest becomes 30 ° of angles to the right with horizon.
9. a kind of multifunctional bridge plug dropping feeder according to claim 1, is characterized in that: there is the conical surface described mandrel one end, and diameter increases gradually, there being centre bore bottom, conical surface one end to be distributed with uniform aperture on circumference, with mandrel centre bore UNICOM.
10. a kind of multifunctional bridge plug dropping feeder according to claim 1, is characterized in that: described bailer grab has uniformly elongated slot on the circumferencial direction of screw thread one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421203.3U CN204002659U (en) | 2014-07-29 | 2014-07-29 | A kind of multifunctional bridge plug dropping feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421203.3U CN204002659U (en) | 2014-07-29 | 2014-07-29 | A kind of multifunctional bridge plug dropping feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204002659U true CN204002659U (en) | 2014-12-10 |
Family
ID=52042679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420421203.3U Expired - Lifetime CN204002659U (en) | 2014-07-29 | 2014-07-29 | A kind of multifunctional bridge plug dropping feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204002659U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019855A (en) * | 2015-08-05 | 2015-11-04 | 长葛市福侨机电有限公司 | Packer |
| RU2639335C1 (en) * | 2016-09-06 | 2017-12-21 | Общество с ограниченной ответственностью Научно-производственная фирма "ВНИИГИС - Забойные телеметрические комплексы" (ООО НПФ "ВНИИГИС" - ЗТК") | Device to secure casings of downhole instrumentation of bottomhole telemetric system inside drilling string insert |
| CN114687689A (en) * | 2022-04-21 | 2022-07-01 | 西南石油大学 | Recoverable bridging plug dropping tool |
-
2014
- 2014-07-29 CN CN201420421203.3U patent/CN204002659U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019855A (en) * | 2015-08-05 | 2015-11-04 | 长葛市福侨机电有限公司 | Packer |
| RU2639335C1 (en) * | 2016-09-06 | 2017-12-21 | Общество с ограниченной ответственностью Научно-производственная фирма "ВНИИГИС - Забойные телеметрические комплексы" (ООО НПФ "ВНИИГИС" - ЗТК") | Device to secure casings of downhole instrumentation of bottomhole telemetric system inside drilling string insert |
| CN114687689A (en) * | 2022-04-21 | 2022-07-01 | 西南石油大学 | Recoverable bridging plug dropping tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141210 |
|
| CX01 | Expiry of patent term |