CN108397150A - A kind of connecting pipes impactor - Google Patents
A kind of connecting pipes impactor Download PDFInfo
- Publication number
- CN108397150A CN108397150A CN201810102478.3A CN201810102478A CN108397150A CN 108397150 A CN108397150 A CN 108397150A CN 201810102478 A CN201810102478 A CN 201810102478A CN 108397150 A CN108397150 A CN 108397150A
- Authority
- CN
- China
- Prior art keywords
- piston
- roll shaft
- boss
- outer barrel
- wall
- Prior art date
- 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.)
- Pending
Links
- 230000003116 impacting effect Effects 0.000 claims description 26
- 230000006698 induction Effects 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
- E21B31/113—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of connecting pipes impactors, it is converted by hydraulic pressure and spring force between top connection and lower contact, and by the up and down motion of piston, allow impactor to carry out the bump in the short time, and impact direction can upwards can also be downward, arbitrarily converted, the present invention is easy to operate, reliable operation, operating efficiency is high, widely used；Have two kinds of conflicting models up and down, and both of which easy switching；Continuous pipe need not be wound when operation repeatedly, extends continuous pipe service life.
Description
Technical field
The invention belongs to technical field of tools under continuous pipe well, are related to a kind of connecting pipes impactor.
Background technology
The workover treatment in China oil field is increasingly frequent, wherein continuous pipe underground operation tool is by low cost, no killing well, height
Efficiency and the multifarious advantage of operating type, are favored by vast underground work troop.At present scene with continuous piping tool into
When row salvaging, unfreezing operation, the mainly continuous pipe hydraulic shock device of dependence has upward bumper jar, downward bumper jar, and foreign countries are also
There is two-way bumper jar.But tool shock effect is unstable, operation is relatively cumbersome, winding influences continuous pipe service life, shake repeatedly
It is low to hit frequency.
Invention content
The object of the present invention is to provide a kind of connecting pipes impactors, solve impactor jarring existing in the prior art
The low problem of frequency.
The technical solution adopted in the present invention is a kind of connecting pipes impactor, including top connection, and top connection is hollow
Cylinder is arranged in the inner wall of top connection there are one annular groove, and groove is connected with circular ring shape spring base, the lower section of spring base
Being provided with can also set up along the up and down feeding valve spring of top connection, the top connection inner wall there are one annular convex platform, annular
Boss, which is arranged on the lower section of annular groove, annular convex platform, is placed with induction valve, and induction valve is the cylinder of an inner hollow,
Feeding valve rod is provided below in induction valve, and feeding valve rod is fixed in interface inner wall, and the upper interface is connect with feeding valve rod
For place's setting there are one the barrel-shaped boss of cylinder, boss upper surface is evenly distributed with circular hole, and feeding valve rod upper end is hemispherical shape, on
Interface lower end is connected with mark post outer barrel by helicitic texture, and mark post is movably set in mark post outer barrel, and mark post is cylindrical rod shape,
It is criss-cross snap-gauge that mark post upper end, which is provided with cross sectional shape, and the lower end of mark post is hemispherical shape, mark post outer barrel lower end inner wall
There are one the barrel-shaped boss of cylinder for setting, and mark post spring is placed between the snap-gauge and the boss of mark post outer tube inner wall of mark post, mark
Bar outer barrel lower end is connected with piston outer barrel by helicitic texture, and piston outer barrel is provided with piston, and piston is inner hollow
The internal diameter of cylindrical shape, the stage casing of piston is more small in ends, and the outer surface of piston is provided with multiple annular grooves, the inner wall of piston upper end
There are one annular groove, annular groove is embedded with the piston seat for the cylinder that shape is inner hollow, piston and piston seat for setting
Between be threadedly coupled, internal piston setting is connected with impacting shaft, impacting shaft is cylinder there are one annular convex platform below annular convex platform
The lower end of rod-shape, impacting shaft is provided with the round platform that diameter is more than upper end, and piston outer barrel lower end is connected with master by helicitic texture
Cylinder, inwardly setting is placed with impact spring one there are one boss between piston and the boss of main cylinder for the upper end of main cylinder, under main cylinder
End has been connected through a screw thread roll shaft outer barrel, and roll shaft outer barrel upper end is provided with boss, in the boss of the boss and roll shaft outer barrel of main cylinder
Between be placed with impact spring two, be provided with roll shaft in roll shaft outer barrel, roll shaft is socketed on the outside of impacting shaft, and roll shaft lower end diameter is big
In upper end, the stage casing of roll shaft is connected with fixing pin, and roll shaft upper end is provided with roll shaft nut, and roll shaft nut is internal stepped
Cylinder, one end internal diameter matches with impacting shaft, and other end internal diameter matches with roll shaft, and the roll shaft outer tube inner wall is connected with punching
Hit and emit, impact emit positioned at fixed pin it is fixed on, there are one boss, the lower end of roll shaft and roll shafts for the lower end inner wall setting of roll shaft outer barrel
The boss of outer barrel is clamped, and roll shaft outer barrel lower end is connected with lower contact by helicitic texture, and lower contact is the cylindrical drum of inner hollow,
Lower contact inner wall is provided with boss, the lower end clamping of boss and impacting shaft, and impacting shaft lower end is socketed with upper ram, and upper ram is interior
The hollow cylindrical drum in portion, upper ram inside are ladder-like, and the upper end internal diameter is less than bottom diameter.
The present invention is further characterized in that：
The outer surface of the upper piston area is provided with piston packing ring and piston sleeve, and piston sleeve is under piston packing ring
Side.
It is evenly distributed with fine through holes in the middle part of piston；
Roll shaft stage casing arc surface is equipped with uniformly distributed pin via hole, and inner wall is equipped with annular groove below roll shaft, and annular groove is embedded
There is bearing；
Roll shaft nut inner wall is provided with internal axle sleeve, and outer wall is provided with outer shaft；
Impact cap is equipped with equally distributed cular arc groove, and nose end is equipped with dustband annular groove；
Impacting shaft and upper ram are equipped with arc contact anchor ring.
The invention has the advantages that easy to operate, reliable operation of the invention, operating efficiency is high, widely used, such as beats
Fishing, unfreezing, push sliding sleeve, tubing string shaping etc.；Have two kinds of conflicting models up and down, and both of which easy switching；Make
Continuous pipe need not be wound when industry repeatedly, extends continuous pipe service life.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of connecting pipes impactor of the present invention；
Fig. 2 is the structural schematic diagram of top connection of the present invention；
Fig. 3 is the structural schematic diagram of mark post of the present invention；
Fig. 4 is the structural schematic diagram of piston in the present invention.
In figure, 1. top connections, 2. feeding valve springs, 3. induction valves, 4. feeding valve rods, 5. mark post outer barrels, 6. mark posts, 7. marks
Bar spring, 8. piston seats, 9. pistons, 10. piston rings, 11. piston sleeves, 12. piston outer barrels, 13. impact springs one, 14. punchings
Hit axis, 15. main cylinders, 16. impact springs two, 17. roll shaft outer barrels, 18. internal axle sleeves, 19. outer shafts, 20. roll shaft nuts, 21. punchings
Hit cap, 22. fixing pins, 23. roll shafts, 24. upper rams, 25. lower contacts, 26. spring bases, 27. bearings.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of structure of connecting pipes impactor of the present invention is as shown in Figure 1, include top connection 1, the concrete structure of top connection 1
As shown in Fig. 2, top connection 1 is hollow cylinder, it is arranged there are one annular groove in the inner wall of top connection 1, groove is clamped
Have a circular ring shape spring base 26, the lower section of spring base 26 be provided with can along the up and down feeding valve spring 2 of top connection 1, it is described on
1 inner wall of connector is also set up there are one annular convex platform, annular convex platform be arranged be placed on the lower section of annular groove, annular convex platform into
To valve 3, induction valve 3 is the cylinder of an inner hollow, and feeding valve rod 4 is provided below in induction valve 3, and feeding valve rod 4 is affixed
In 1 inner wall of upper interface, the upper interface 1 is there are one the barrel-shaped boss of cylinder, boss upper surfaces with the setting of 4 junction of feeding valve rod
It is evenly distributed with circular hole, 4 upper end of feeding valve rod is hemispherical shape, and 1 lower end of upper interface is connected with by helicitic texture outside mark post
Cylinder 5 is movably set with mark post 6 in mark post outer barrel 5, and the specific structure is shown in FIG. 3 for mark post 6, and mark post 6 is cylindrical rod shape, mark
It is criss-cross snap-gauge that 6 upper end of bar, which is provided with cross sectional shape, and the lower end of mark post 6 is hemispherical shape, 5 lower end inner wall of mark post outer barrel
There are one the barrel-shaped boss of cylinder for setting, and mark post spring 7 is placed between the boss of 5 inner wall of snap-gauge and mark post outer barrel of mark post 6,
5 lower end of mark post outer barrel is connected with piston outer barrel 12 by helicitic texture, and piston outer barrel 12 is internally provided with piston 9, the tool of piston 9
Body structure is as shown in figure 4, piston 9 is the cylindrical shape of inner hollow, and the internal diameter in the stage casing of piston 9 is more small in ends, the appearance of piston 9
Face is provided with multiple annular grooves, and there are one annular grooves for the inner wall setting of 9 upper end of piston, and it is interior that annular groove, which is embedded with shape,
The piston seat 8 of the hollow cylinder in portion, is threadedly coupled between piston 9 and piston seat 8, and piston 9 is internally provided with a convex annular
Platform, is connected with impacting shaft 14 below annular convex platform, and impacting shaft 14 is cylindrical rod shape, and it is big that the lower end of impacting shaft 14 is provided with diameter
Round platform in upper end, 12 lower end of piston outer barrel are connected with main cylinder 15 by helicitic texture, and the upper end of main cylinder 15 is inwardly provided with one
A boss, is placed with impact spring 1 between piston 9 and the boss of main cylinder 15, and 15 lower end of main cylinder has been connected through a screw thread roller
Axis outer barrel 17, roll shaft outer barrel upper end are provided with boss, and punching is placed between the boss and the boss of roll shaft outer barrel 17 of main cylinder 15
Spring 2 16 is hit, roll shaft 23 is provided in roll shaft outer barrel 17, roll shaft 23 is socketed in 14 outside of impacting shaft, and 23 lower end diameter of roll shaft is big
In upper end, the stage casing of roll shaft 23 is connected with fixing pin 22, and 23 upper end of roll shaft is provided with roll shaft nut 20, and roll shaft nut 20 is interior
The stepped cylinder in portion, one end internal diameter match with impacting shaft 14, and other end internal diameter matches with roll shaft 23, outside the roll shaft
17 inner walls of cylinder are connected with impact and emit 21, and impact emits 21 and is located on fixed pin fixed 22, and the lower end inner wall of roll shaft outer barrel 17 is provided with
One boss, the lower end of roll shaft 23 are clamped with the boss of roll shaft outer barrel 17, and 17 lower end of roll shaft outer barrel is connected with by helicitic texture
Lower contact 25, lower contact 25 are the cylindrical drum of inner hollow, and 25 inner wall of lower contact is provided with boss, boss under impacting shaft 14
End clamping, 14 lower end of impacting shaft are socketed with upper ram 24, and upper ram 24 is the cylindrical drum of inner hollow, and 24 inside of upper ram is rank
Scalariform, the upper end internal diameter are less than bottom diameter.
The outer surface on 9 top of the piston is provided with piston packing ring 10 and piston sleeve 11, and piston sleeve 11 is in piston
10 lower section of sealing ring.
9 middle part of piston is evenly distributed with fine through holes；
23 stage casing arc surface of roll shaft is equipped with uniformly distributed pin via hole, and 23 lower section inner wall of roll shaft is equipped with annular groove, annular groove
It is embedded with bearing 27；
20 inner wall of roll shaft nut is provided with internal axle sleeve 18, and outer wall is provided with outer shaft 19；
Impact cap 21 is equipped with equally distributed cular arc groove, and nose end is equipped with dustband annular groove；
Impacting shaft 14 and upper ram 24 are equipped with arc contact anchor ring.
The present invention operation principle be：
When impactor front end is hampered, the liquid of enough flows is pumped into tool interior from top connection 1, passes through runner
Variation forms pressure difference between feeding valve rod 4 and mark post 6, and 6 downlink of mark post is pushed to close runner.Since front end is hampered, so
Instantaneous elevated pressures are generated at piston 9 rapidly, push 14 quick washing of impacting shaft, are finally hit with the formation of 25 contact surface of lower contact
It hits, pushes shaft bottom obstruction.When 9 downlink of piston, the runner between mark post 6 and piston 9 is opened, and impacting shaft 14 loses downward
Motive power, under the action of impact spring 13,16 and induction valve 3, impacting shaft 14 resets rapidly, to restore to impact preceding shape
State.Restart the second Secondary Shocks under the continuous action of aforementioned liquids pressure.
The present invention application method be：
The operation of the present invention is very simple.When front end is hampered its impact downwards of needs, need to be only continuously applied to impactor
Certain pressure is then pumped into the liquid of enough flows, you can excitation impactor generates the impact of high frequency, when occurring suppressing pump phenomenon
Show that bit pressure is excessively high, slightly carries coiled tubing.When needs, it is impacted upwards, lower end tangles junk, keeps upwards centainly
Pulling force, while being pumped into the liquid of enough flows, you can excitation impactor generates the upward impact of high frequency.
Easy to operate, reliable operation of the invention, operating efficiency is high, widely used, such as salvaging, unfreezing, push sliding sleeve, tubing string
Shaping etc.；Have two kinds of conflicting models up and down, and both of which easy switching；It need not be wound repeatedly when operation continuous
Pipe, extends continuous pipe service life.
Claims (7)
1. a kind of connecting pipes impactor, it is characterised in that：Including top connection (1), top connection (1) is hollow cylinder,
There are one annular groove, groove is connected with circular ring shape spring base (26) for the inner wall setting of top connection (1), under spring base (26)
Just it is provided with ring there are one being also set up along the up and down feeding valve spring (2) of top connection (1), top connection (1) inner wall
Shape boss, annular convex platform is arranged is placed with induction valve (3) on the lower section of annular groove, annular convex platform, and induction valve (3) is one
Feeding valve rod (4) is provided below in the cylinder of inner hollow, induction valve (3), and feeding valve rod (4) is fixed in interface (1)
Wall, the upper interface (1) there are one the barrel-shaped boss of cylinder with the setting of feeding valve rod (4) junction, uniformly divide by boss upper surface
It is furnished with circular hole, feeding valve rod (4) upper end is hemispherical shape, and upper interface (1) lower end is connected with mark post outer barrel by helicitic texture
(5), mark post (6) is movably set in mark post outer barrel (5), mark post (6) is cylindrical rod shape, and mark post (6) upper end is provided with section
Shape is criss-cross snap-gauge, and the lower end of mark post (6) is hemispherical shape, and there are one circles for the setting of mark post outer barrel (5) lower end inner wall
The barrel-shaped boss of column, is placed with mark post spring (7) between the snap-gauge and the boss of mark post outer barrel (5) inner wall of mark post (6), outside mark post
Cylinder (5) lower end is connected with piston outer barrel (12) by helicitic texture, and piston outer barrel (12) is internally provided with piston (9), piston (9)
Internal diameter for the cylindrical shape of inner hollow, the stage casing of piston (9) is more small in ends, and the outer surface of piston (9) is provided with multiple annulars
Groove, there are one annular groove, annular groove is embedded with the cylinder that shape is inner hollow for the inner wall setting of piston (9) upper end
Piston seat (8), be threadedly coupled between piston (9) and piston seat (8), piston (9) is internally provided with an annular convex platform, annular
It is connected with impacting shaft (14) below boss, impacting shaft (14) is cylindrical rod shape, and it is big that the lower end of impacting shaft (14) is provided with diameter
Round platform in upper end, piston outer barrel (12) lower end are connected with main cylinder (15) by helicitic texture, and the upper end of main cylinder (15) is inwardly set
It sets there are one boss, impact spring one (13) is placed between piston (9) and the boss of main cylinder (15), main cylinder (15) lower end is logical
It crosses and is threaded with roll shaft outer barrel (17), roll shaft outer barrel upper end is provided with boss, in the boss and roll shaft outer barrel of main cylinder (15)
(17) it is placed with impact spring two (16) between boss, roll shaft (23), roll shaft (23) socket are provided in roll shaft outer barrel (17)
On the outside of impacting shaft (14), roll shaft (23) lower end diameter is more than upper end, and the stage casing of roll shaft (23) is connected with fixing pin (22), roller
Axis (23) upper end is provided with roll shaft nut (20), and roll shaft nut (20) is internal stepped cylinder, one end internal diameter and impact
Axis (14) matches, and other end internal diameter matches with roll shaft (23), and roll shaft outer barrel (17) inner wall is connected with impact and emits (21),
Impact emits (21) and is located on fixed pin fixed (22), and there are one boss, roll shafts (23) for the lower end inner wall setting of roll shaft outer barrel (17)
The boss of lower end and roll shaft outer barrel (17) be clamped, roll shaft outer barrel (17) lower end is connected with lower contact (25) by helicitic texture,
Lower contact (25) is the cylindrical drum of inner hollow, and lower contact (25) inner wall is provided with boss, the lower end of boss and impacting shaft (14)
Clamping, impacting shaft (14) lower end are socketed with upper ram (24), and upper ram (24) is the cylindrical drum of inner hollow, and upper ram (24) is interior
Portion is ladder-like, and the upper end internal diameter is less than bottom diameter.
2. connecting pipes impactor according to claim 1, it is characterised in that：The outer surface on piston (9) top is set
It is equipped with piston packing ring (10) and piston sleeve (11), piston sleeve (11) is below the piston packing ring (10).
3. connecting pipes impactor according to claim 1, it is characterised in that：It is evenly distributed in the middle part of the piston (9)
Fine through holes.
4. connecting pipes impactor according to claim 1, it is characterised in that：It is set on the arc surface of roll shaft (23) stage casing
There are uniformly distributed pin via hole, roll shaft (23) lower section inner wall to be equipped with annular groove, annular groove is embedded with bearing (27).
5. connecting pipes impactor according to claim 1, it is characterised in that：Roll shaft nut (20) inner wall is provided with
Internal axle sleeve (18), outer wall are provided with outer shaft (19).
6. connecting pipes impactor according to claim 1, it is characterised in that：The impact cap (21) is equipped with and is uniformly distributed
Cular arc groove, nose end be equipped with dustband annular groove.
7. connecting pipes impactor according to claim 1, it is characterised in that：The impacting shaft (14) and upper ram (24)
It is equipped with arc contact anchor ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102478.3A CN108397150A (en) | 2018-02-01 | 2018-02-01 | A kind of connecting pipes impactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102478.3A CN108397150A (en) | 2018-02-01 | 2018-02-01 | A kind of connecting pipes impactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108397150A true CN108397150A (en) | 2018-08-14 |
Family
ID=63096173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810102478.3A Pending CN108397150A (en) | 2018-02-01 | 2018-02-01 | A kind of connecting pipes impactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108397150A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847836A (en) * | 2019-11-25 | 2020-02-28 | 西南石油大学 | Underground seismic source nipple while drilling |
| CN113323614A (en) * | 2021-08-02 | 2021-08-31 | 中国石油集团川庆钻探工程有限公司 | Hydraulic upper-impact impactor for coiled tubing and coiled tubing tool |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5503228A (en) * | 1994-12-05 | 1996-04-02 | Anderson; Edwin A. | Jar apparatus and method of jarring |
| CN204041022U (en) * | 2014-08-04 | 2014-12-24 | 西安石油大学 | A kind of twofold whirl water pumping gas production downhole tool |
| CN204851057U (en) * | 2015-07-25 | 2015-12-09 | 湖南新金刚工程机械有限公司 | Hyperbar is soon towards down --hole churn drilling tools |
| CN205135400U (en) * | 2015-10-29 | 2016-04-06 | 中国石油大学(北京) | Impacter but prospecting borehole recovery type high frequency surges |
-
2018
- 2018-02-01 CN CN201810102478.3A patent/CN108397150A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5503228A (en) * | 1994-12-05 | 1996-04-02 | Anderson; Edwin A. | Jar apparatus and method of jarring |
| CN204041022U (en) * | 2014-08-04 | 2014-12-24 | 西安石油大学 | A kind of twofold whirl water pumping gas production downhole tool |
| CN204851057U (en) * | 2015-07-25 | 2015-12-09 | 湖南新金刚工程机械有限公司 | Hyperbar is soon towards down --hole churn drilling tools |
| CN205135400U (en) * | 2015-10-29 | 2016-04-06 | 中国石油大学(北京) | Impacter but prospecting borehole recovery type high frequency surges |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847836A (en) * | 2019-11-25 | 2020-02-28 | 西南石油大学 | Underground seismic source nipple while drilling |
| CN110847836B (en) * | 2019-11-25 | 2020-06-16 | 西南石油大学 | Underground seismic source nipple while drilling |
| CN113323614A (en) * | 2021-08-02 | 2021-08-31 | 中国石油集团川庆钻探工程有限公司 | Hydraulic upper-impact impactor for coiled tubing and coiled tubing tool |
| CN113323614B (en) * | 2021-08-02 | 2021-10-19 | 中国石油集团川庆钻探工程有限公司 | Hydraulic upper-impact impactor for coiled tubing and coiled tubing tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140230940A1 (en) | Oil well sucker rod shock absorber | |
| CN104563938A (en) | Continuous shocking tool | |
| US4571162A (en) | Oil well sucker rod shock absorber | |
| CN106609659B (en) | Hydraulic buckling type remote control diameter variable stabilizer | |
| CN105545241A (en) | Slip-type internal fisher for coiled tube | |
| CN108397150A (en) | A kind of connecting pipes impactor | |
| CN110847837A (en) | Bidirectional hydraulic resistance type drilling jar | |
| CN104499978B (en) | A kind of disc spring two-way shock accelerator and its accelerated method | |
| CN204782895U (en) | Horizontal well unfreezing jar accelerator | |
| CN210087274U (en) | Sand-flushing hydraulic cutting knife | |
| CN204163964U (en) | Ring valve type hydraulic feedback oil | |
| CN108843255B (en) | Oil gas exploitation drilling shock absorber | |
| CN112593884B (en) | Underground continuous downward jarring unclamping device and method | |
| CN105401903A (en) | Three-jaw fisher for coiled tubing | |
| CN113323614B (en) | Hydraulic upper-impact impactor for coiled tubing and coiled tubing tool | |
| CN202325337U (en) | Hydraulic center device | |
| CN214170487U (en) | Underground continuous downward jarring stuck releasing device | |
| CN211115927U (en) | Uninterrupted plunger water drainage and gas production device | |
| RU2478163C2 (en) | Tube perforator (versions) | |
| CN203308417U (en) | Jar for looseness of oil collection pipe coupling | |
| CN206458384U (en) | A kind of tubing string iron pin catcher | |
| CN215979314U (en) | Pressure sealing-assisted plunger | |
| CN207420518U (en) | Hydraulic shock device | |
| CN212690305U (en) | Bias valve type oil-well pump | |
| CN201326535Y (en) | Double-plunger suspended anti-airlock oil pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180814 |