CN206280058U - The leather cup packing fracturing string of anti-leather cup abrasion - Google Patents
The leather cup packing fracturing string of anti-leather cup abrasion Download PDFInfo
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- CN206280058U CN206280058U CN201621349865.XU CN201621349865U CN206280058U CN 206280058 U CN206280058 U CN 206280058U CN 201621349865 U CN201621349865 U CN 201621349865U CN 206280058 U CN206280058 U CN 206280058U
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- leather cup
- ring
- cup
- outer barrel
- central tube
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Abstract
The utility model is related to the leather cup packing fracturing string technical field of anti-leather cup abrasion, is a kind of leather cup packing fracturing string of anti-leather cup abrasion；It includes connected pipes, anchor, pressure release barrier valve, cup packer and catches ball cylinder；Anchor is installed with connected pipes；Pressure release barrier valve is installed with the lower end connection of connected pipes, cup packer is installed with the lower end connection of pressure release barrier valve, be installed with the lower end connection of cup packer and catch ball cylinder.The utility model reasonable and compact in structure, it is easy to use；During entering under, pressure break side opening, fracturing fluid transfer passage and relief hole form pressure release passage, damping pressure during entering under elimination, the leather cup part of cup packer will not be propped up, make to remain rational mobile space between the leather cup part of cup packer and internal surface of sleeve pipe, abrasion is avoided, the sealing reliability of cup packer is improved, setting failure is prevented.
Description
Technical field
The utility model is related to leather cup to insulate fracturing string technical field, is a kind of leather cup packing pressure break of anti-leather cup abrasion
Pipe string.
Background technology
The conventional cup packer in oil field is self-sealing, is acted on the leather cup of cup packer by down-hole pressure, is made
After leather cup is propped up and the interference fit of sleeve pipe realizes the sealing of packer；Therefore during entering under, due to the presence of resistance,
The leather cup part of cup packer equally can also be subject to the effect of resistance to prop up, and abrasion is produced between internal surface of sleeve pipe, easily
Leather cup part is scratched, cup packer is lost sealing, cause to set failure.
The content of the invention
The utility model provides a kind of leather cup packing fracturing string of anti-leather cup abrasion, overcome above-mentioned prior art it
Deficiency, it can effectively solve cup packer, easy to wear during entering under, cause cup packer to set the problem of failure.
The technical solution of the utility model is realized by following measures：A kind of leather cup packing pressure of anti-leather cup abrasion
Split pipe string, including connected pipes, anchor, pressure release barrier valve, cup packer and catch ball cylinder；The fixed peace on connected pipes
Equipped with anchor；Pressure release barrier valve is installed with the lower end connection of connected pipes, is connected in the lower end of pressure release barrier valve
Cup packer is installed with, is installed with the lower end connection of cup packer and is caught ball cylinder, on the barrel for catching ball cylinder
It is provided with pressure break side opening；Pressure release barrier valve includes valve body, sliding sleeve and ball seat；The upper end of valve body is fixedly mounted on one with connected pipes
Rise；The lower end of valve body is fixedly installed togather with cup packer；Connected pipes, valve body, pressure release barrier valve, cup packer and
The inside for catching ball cylinder communicates and forms fracturing fluid transfer passage；Axial movement stopper slot is provided with valve body, limit is moved axially
Circle distribution has at least one relief hole on the valve body of position groove bottom, and moving axially stopper slot and be built-in with can be axially moveable limit
The sliding sleeve that position groove blocks relief hole after moving down, sliding sleeve is fixedly mounted by the first shear pin and moves axially the upper of stopper slot
In portion；Ball seat is installed with by the second shear pin in the bottom of sliding sleeve, the pressure rating of the second shear pin is more than
The pressure rating of the first shear pin.
Here is the further optimization and/or improvements to above-mentioned utility model technical scheme：
Above-mentioned cup packer and catch and can connect and be installed with centralizer between ball cylinder.
Above-mentioned centralizer can use elastic centralizer；Elastic centralizer includes central tube, retainer ring, shift(ing) ring and arch bullet
Piece；A retainer ring and a shift(ing) ring are externally provided with central tube；Retainer ring is fixedly mounted on outside the top of central tube；Shift(ing) ring
It is sleeved on outside the central tube below retainer ring, circumference is installed with least three bow-shaped shrapnels in retainer ring and shift(ing) ring；
The upper end of central tube is fixed together with the lower end of cup packer；The lower end of central tube is fixedly connected on one with ball cylinder is caught
Rise.
Above-mentioned bow-shaped shrapnel may include the lower vertical connection of the upper vertical linkage section of upside, middle part arch righting section and downside
Section；Mutual corresponding shell fragment slot is respectively equipped with the upper end of the lower end of retainer ring and shift(ing) ring；The upper of bow-shaped shrapnel connects vertically
Connect section to be placed in the shell fragment slot of retainer ring, and be fixedly installed togather by upper pinning and retainer ring；The lower of bow-shaped shrapnel is erected
Straight linkage section is placed in the shell fragment slot of shift(ing) ring, and is fixedly installed togather by lower pinning and shift(ing) ring；Or/and, in
The lower end of heart cylinder and the upper end for catching ball cylinder are respectively equipped with external screw thread, and central tube is fixedly mounted on ball cylinder is caught by female adapter
Together；Or/and, retainer ring limiting stand is externally provided with the upside of central tube, it is provided with outer on the central tube on the downside of retainer ring limiting stand
Screw thread, retainer ring is threadably secured on central tube, and the upper end of retainer ring withstands on retainer ring limiting stand bottom；In fixation
Screw thread is provided with the central tube of ring limit dais, the upper end of central tube is fixedly installed togather by screw thread with cup packer.
Above-mentioned valve body may include top connection, outer barrel and lower contact；It is threadably secured to be provided with the upside of outer barrel and connects
Head, outer barrel is connected with connected pipes by top connection and is fixedly installed togather；It is threadably secured in the downside of outer barrel and is provided with
Lower contact, outer barrel is connected with cup packer by lower contact and is fixedly installed togather；In top connection lower end, outer barrel and lower contact
Axial movement stopper slot is formed between end.
Split ring can be installed with by the first shear pin outside the upper end of above-mentioned sliding sleeve, be provided with the upside of outer barrel
The draw-in groove of upper end open, split ring is placed in the bottom of draw-in groove, and top connection is fixed in the top of draw-in groove, and split ring is axially pushed up
Fasten in the bottom of draw-in groove；Or/and, above-mentioned sliding sleeve upside is outer be installed between outer barrel at least together with sealing ring
29；Be installed between outer barrel outside the downside of sliding sleeve at least together with sealing ring 29；Outside the bottom of top connection and outer barrel between
It is installed with least one sealing ring 29；Be installed between ball seat and sliding sleeve at least together with sealing ring 29；Lower contact
Be installed between outer barrel outside top at least together with sealing ring 29；Or/and, be provided with screw thread in the upside of outer barrel, outer barrel with
It is threadably secured between outside the downside of top connection and is installed together；Be provided with screw thread in the downside of outer barrel, outer barrel and lower contact it
Between be threadably secured and be installed together.
Above-mentioned ball cylinder of catching may include cylinder and catch ball base；Pressure break side opening is located on cylinder；It is provided with the downside of cylinder
Screw thread, and be threadably secured to be provided with and catch ball base；Catch ball base and be provided with the upward and downward communicated with fracturing fluid transfer passage
Intercommunicating pore；External diameter of the internal diameter of upward and downward intercommunicating pore less than ball seat.
Above-mentioned anchor can use hydraulic anchor.
The utility model reasonable and compact in structure, it is easy to use；During entering under, pressure break side opening, fracturing fluid conveying are logical
Road and relief hole form pressure release passage, and the damping pressure during entering under elimination, the leather cup part of cup packer will not be supportted
Rise, make to remain rational mobile space between the leather cup part of cup packer and internal surface of sleeve pipe, it is to avoid abrasion, improve skin
The sealing reliability of bowl packer, prevents setting failure.
Brief description of the drawings
Accompanying drawing 1 is the structure diagram in a state of use of the utility model most preferred embodiment.
Accompanying drawing 2 is the half section structural representation of pressure release barrier valve in accompanying drawing 1.
Accompanying drawing 3 be accompanying drawing 1 in catch ball cylinder half-sectional structural representation.
Accompanying drawing 4 is the half-sectional structural representation of elastic centralizer in accompanying drawing 1.
Coding in accompanying drawing is respectively：1 is connected pipes, and 2 is anchor, and 3 is pressure release barrier valve, and 4 insulate for leather cup
Device, 5 to catch ball cylinder, and 6 is pressure break side opening, and 7 is sliding sleeve, and 8 is ball seat, and 9 is fracturing fluid transfer passage, and 10 is spacing for axial movement
Groove, 11 is relief hole, and 12 is the first shear pin, and 13 is the second shear pin, and 14 is centralizer, cylinder centered on 15, and 16 is solid
Determine ring, 17 is shift(ing) ring, and 18 is bow-shaped shrapnel, and 19 is upper pinning, and 20 is lower pinning, and 21 is retainer ring limiting stand, and 22 is above to connect
Head, 23 is outer barrel, and 24 is lower contact, and 25 is split ring, and 26 is cylinder, and 27 to catch ball base, and 28 is upward and downward intercommunicating pore, and 29 are
Sealing ring.
Specific embodiment
The utility model is not limited by following embodiments, can according to the technical solution of the utility model and actual conditions come
Determine specific embodiment.
In the utility model, for the ease of description, the description of the relative position relation of each part is according to specification
The Butut mode of accompanying drawing 1 is described, such as：The position relationship of upper and lower, left and right etc. is according to the Butut of Figure of description 1
Direction determines.
The utility model is further described with reference to embodiment and accompanying drawing：
As shown in accompanying drawing 1,2,4, the leather cup packing fracturing string of the anti-leather cup abrasion includes connected pipes 1, anchor
2nd, pressure release barrier valve 3, cup packer 4 and catch ball cylinder 5；Anchor 2 is installed with connected pipes 1；In connection oil
The lower end connection of pipe 1 is installed with pressure release barrier valve 3, and leather cup packing is installed with the lower end connection of pressure release barrier valve 3
Device 4, is installed with the lower end connection of cup packer 4 and catches ball cylinder 5, and pressure break side opening 6 is provided with the barrel for catching ball cylinder 5；
Pressure release barrier valve 3 includes valve body, sliding sleeve 7 and ball seat 8；The upper end of valve body is fixedly installed togather with connected pipes 1；Under valve body
End is fixedly installed togather with cup packer 4；Connected pipes 1, valve body, pressure release barrier valve 3, cup packer 4 and catch ball cylinder 5
Inside communicate and form fracturing fluid transfer passage 9；Axial movement stopper slot 10 is provided with valve body, stopper slot is moved axially
Circle distribution has at least one relief hole 11 on the valve body barrel of 10 bottoms, and moving axially that stopper slot 10 is built-in with can be vertically
The sliding sleeve 7 that mobile stopper slot 10 blocks relief hole 11 after moving down, sliding sleeve 7 is fixedly mounted on axial direction by the first shear pin 12
In the top of mobile stopper slot 10；Ball seat 8 is installed with by the second shear pin 13 in the bottom of sliding sleeve 7, second cuts
Cut the pressure rating of the pressure rating more than the first shear pin 12 of pin 13.
Anchor 2 and cup packer 4 are respectively adopted existing known equipment；By tubing hanger by under the utility model
During entering, pressure break side opening 6, fracturing fluid transfer passage 9 and relief hole 11 form pressure release passage, the damping during entering under elimination
Pressure, the leather cup part of cup packer 4 will not be propped up, and make to begin between the leather cup part of cup packer 4 and internal surface of sleeve pipe
Rational mobile space is kept eventually, it is to avoid abrasion, improve the sealing reliability of cup packer 4, prevent setting failure；This practicality
It is new to be cut the first shear pin 12 by way of pitching builds the pressure after specified location is lowered into, will by sliding sleeve 7
Relief hole 11 is closed；Repressurization, the second shear pin 13 is cut, and recovers the connection of fracturing fluid transfer passage 9；Lead to fracturing fluid
Cross fracturing fluid transfer passage 9 and pressure break side opening 6 completes fracturing work；Ball and ball seat 8 are dropped downward into catches recovery in ball cylinder 5.
The leather cup packing fracturing string of above-mentioned anti-leather cup abrasion can further be optimized or/and be changed according to actual needs
Enter：
As shown in Figure 1, connected in cup packer 4 and between catching ball cylinder 5 and be installed with centralizer 14.Centralizer 14
Play the effect for making the utility model placed in the middle, it is to avoid the leather cup part of cup packer 4 and sleeve pipe eccentric wear, further prevent leather cup
The leather cup partial destruction of packer 4, improves the sealing reliability of cup packer.
As shown in Figure 4, centralizer 14 uses elastic centralizer；Elastic centralizer includes central tube 15, retainer ring 16, moves
Rotating ring 17 and bow-shaped shrapnel 18；A retainer ring 16 and a shift(ing) ring 17 are externally provided with central tube 15；Retainer ring 16 fixes peace
Outside the top of central tube 15；Shift(ing) ring 17 is sleeved on outside the central tube 15 of the lower section of retainer ring 16, in retainer ring 16 and movement
Circumference is installed with least three bow-shaped shrapnels 18 on ring 17；The upper end of central tube 15 is fixed with the lower end of cup packer 4
Link together；The lower end of central tube 15 is fixed together with ball cylinder 5 is caught.
Elastic centralizer is the thrust by sleeve pipe using bow-shaped shrapnel 18, and the utility model righting is centered in into sleeve pipe
Interior, simple structure is flexible and convenient to use；Righting effect is good.
As shown in Figure 4, for convenience of the dismounting of elastic centralizer, upper vertical linkage section of the bow-shaped shrapnel 18 including upside,
Middle part arch righting section and the lower vertical linkage section of downside；Phase is respectively equipped with the upper end of the lower end of retainer ring 16 and shift(ing) ring 17
Mutual corresponding shell fragment slot；The upper vertical linkage section of bow-shaped shrapnel 18 is placed in the shell fragment slot of retainer ring 16, and by locking
Nail 19 is fixedly installed togather with retainer ring 16；The lower vertical linkage section of bow-shaped shrapnel 18 is placed in the shell fragment slot of shift(ing) ring 17
It is interior, and be fixedly installed togather with shift(ing) ring 17 by lower pinning 20；Or/and, the lower end of central tube 15 and catch ball cylinder 5 it is upper
End is respectively equipped with external screw thread, and central tube 15 is fixedly installed togather with ball cylinder 5 is caught by female adapter；Or/and, central tube 15
Upside be externally provided with retainer ring limiting stand 21, be provided with external screw thread, retainer ring on the central tube 15 of the downside of retainer ring limiting stand 21
16 are threadably secured on central tube 15, and the upper end of retainer ring 16 withstands on the bottom of retainer ring limiting stand 21；In retainer ring
Screw thread is provided with central tube 15 at limiting stand 21, the upper end of central tube 15 is fixedly mounted on by screw thread with cup packer 4
Together.
As shown in Figure 2, for convenience of the dismounting of pressure release barrier valve 3, valve body includes top connection 22, outer barrel 23 and lower contact
24；It is threadably secured in the upside of outer barrel 23 and top connection 22 is installed, outer barrel 23 is connected by top connection 22 with connected pipes 1
It is fixedly installed togather；Be threadably secured in the downside of outer barrel 23 and lower contact 24 be installed, outer barrel 23 by lower contact 24 with
The connection of cup packer 4 is fixedly installed togather；Formed between the lower end of top connection 22, outer barrel 23 and the upper end of lower contact 24 and axially moved
Dynamic stopper slot 10.
As shown in Figure 2, for convenience of the first shear pin 12 and the installation between sliding sleeve 7 and outer barrel 23, in the upper of sliding sleeve 7
End is outer to be installed with split ring 25 by the first shear pin 12, and the draw-in groove of upper end open is provided with the upside of outer barrel 23,
Split ring 25 is placed in the bottom of draw-in groove, and top connection 22 is fixed in the top of draw-in groove, and axial the holding out against of split ring 25 is fixed on
In the bottom of draw-in groove.When peace turns, first the first shear pin 12, sliding sleeve 7, split ring 25 can be connected as one, then by it by upper
It is put under in outer barrel 23, then split ring 25 is fixed in draw-in groove with top connection 22, you can realizes the peace of sliding sleeve 7 and outer barrel 23
Dress, it is easy to operate；Shear pin cannot be used as disposable connector after cutting, and broken shear pin can be stuck in main part
On part, cause the main element to reuse, extremely waste；Therefore the problem is directed to, first the first shear pin 12 is connected
On split ring 25, split ring 25 is connected with main element again then；Shear pin after so cutting can be only stuck on split ring,
Split ring only need to be changed；And main element（That is outer barrel 23）May then repeatedly use, reduce and waste.
As shown in Figure 2, for convenience of dismounting, the downside of screw thread, outer barrel 23 and top connection 22 is provided with the upside of outer barrel 23
It is threadably secured between outer and is installed together；Screw thread is provided with the downside of outer barrel 23, is passed through between outer barrel 23 and lower contact 24
It is screwed and is installed together.
As shown in Figure 4, the upside of sliding sleeve 7 it is outer be installed between outer barrel 23 at least together with sealing ring 29；Sliding sleeve 7
Be installed between outer barrel 23 outside downside at least together with sealing ring 29；It is fixed and outer barrel 23 between outside the bottom of top connection 22
At least one sealing ring 29 is installed；Be installed between ball seat 8 and sliding sleeve 7 at least together with sealing ring 29；Lower contact 24
Be installed between outer barrel 23 outside top at least together with sealing ring 29.
As shown in Figure 4, catching ball cylinder 5 includes cylinder 26 and catches ball base 27；Pressure break side opening 6 is located on cylinder 26；In cylinder
Screw thread is provided with the downside of body 26, and is threadably secured to be provided with and is caught ball base 27；Ball base 27 is caught to be provided with and fracturing fluid
The upward and downward intercommunicating pore 28 that transfer passage 9 is communicated；External diameter of the internal diameter of upward and downward intercommunicating pore 28 less than ball seat 8.Upward and downward is connected
Hole 28 can further improve the resistance effect that disappears；Cylinder 26 and catch the screw connection structure easy disassembly of ball base 27, be easy to ball and
From catching, ball cylinder 5 is interior to be taken out ball seat 8.
As needed, anchor 2 uses hydraulic anchor.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger adaptability and optimal implementation
Effect, can according to actual needs increase and decrease non-essential technical characteristic to meet the demand of different situations.
Claims (10)
1. the leather cup packing fracturing string of a kind of anti-leather cup abrasion, it is characterised in that including connected pipes, anchor, pressure release every
Exhausted valve, cup packer and catch ball cylinder；Anchor is installed with connected pipes；It is solid in the lower end connection of connected pipes
Dingan County is equipped with pressure release barrier valve, cup packer is installed with the lower end connection of pressure release barrier valve, in cup packer
Lower end connection is installed with catches ball cylinder, and pressure break side opening is provided with the barrel for catching ball cylinder；Pressure release barrier valve includes valve body, sliding sleeve
And ball seat；The upper end of valve body is fixedly installed togather with connected pipes；The lower end of valve body is fixedly mounted on one with cup packer
Rise；Connected pipes, valve body, pressure release barrier valve, cup packer and catch ball cylinder inside communicate and form fracturing fluid transfer passage；
Axial movement stopper slot is provided with valve body, moving axially circle distribution on the valve body of stopper slot bottom has at least one pressure release
Hole, moves axially stopper slot and is built-in with the sliding sleeve that can be axially moveable after stopper slot is moved down and block relief hole, and sliding sleeve passes through
The fixed installation of first shear pin is moved axially in the top of stopper slot；It is solid by the second shear pin in the bottom of sliding sleeve
Dingan County is equipped with ball seat, the pressure rating of the pressure rating more than the first shear pin of the second shear pin.
2. the leather cup packing fracturing string of anti-leather cup abrasion according to claim 1, it is characterised in that cup packer and
Connection is installed with centralizer between catching ball cylinder.
3. the leather cup of anti-leather cup abrasion according to claim 2 insulates fracturing string, it is characterised in that centralizer uses bullet
Property centralizer；Elastic centralizer includes central tube, retainer ring, shift(ing) ring and bow-shaped shrapnel；A fixation is externally provided with central tube
Ring and a shift(ing) ring；Retainer ring is fixedly mounted on outside the top of central tube；Shift(ing) ring is sleeved on the central tube below retainer ring
Outward, circumference is installed with least three bow-shaped shrapnels in retainer ring and shift(ing) ring；The upper end of central tube and cup packer
Lower end be fixed together；The lower end of central tube is fixed together with ball cylinder is caught.
4. the leather cup of anti-leather cup abrasion according to claim 3 insulates fracturing string, it is characterised in that bow-shaped shrapnel includes
The lower vertical linkage section of the upper vertical linkage section, middle part arch righting section and downside of upside；In the lower end of retainer ring and shift(ing) ring
Upper end be respectively equipped with mutual corresponding shell fragment slot；The upper vertical linkage section of bow-shaped shrapnel is placed in the shell fragment slot of retainer ring
It is interior, and be fixedly installed togather by upper pinning and retainer ring；The lower vertical linkage section of bow-shaped shrapnel is placed in the shell fragment of shift(ing) ring
In slot, and it is fixedly installed togather by lower pinning and shift(ing) ring；Or/and, in the lower end of central tube and the upper end for catching ball cylinder
External screw thread is respectively equipped with, central tube is fixedly installed togather with ball cylinder is caught by female adapter；Or/and, the upside of central tube
Retainer ring limiting stand is externally provided with, external screw thread is provided with the central tube on the downside of retainer ring limiting stand, retainer ring is threadably secured
On central tube, the upper end of retainer ring withstands on retainer ring limiting stand bottom；Set in the central tube of retainer ring limit dais
The upper end for having screw thread, central tube is fixedly installed togather by screw thread with cup packer.
5. the leather cup of the anti-leather cup abrasion according to claim 1 or 2 or 3 or 4 insulates fracturing string, it is characterised in that valve body
Including top connection, outer barrel and lower contact；Be threadably secured in the upside of outer barrel and top connection be installed, outer barrel by top connection with
Connected pipes connection is fixedly installed togather；It is threadably secured in the downside of outer barrel and lower contact is installed, outer barrel connects under passing through
Head is connected with cup packer and is fixedly installed togather；Axial movement is formed between top connection lower end, outer barrel and lower contact upper end
Stopper slot.
6. the leather cup of anti-leather cup abrasion according to claim 5 insulates fracturing string, it is characterised in that outside the upper end of sliding sleeve
Split ring is installed with by the first shear pin, the draw-in groove of upper end open is provided with the upside of outer barrel, split ring is placed in
The bottom of draw-in groove, top connection is fixed in the top of draw-in groove, and split ring is axially held out against in the bottom for being fixed on draw-in groove；Or/
It is outer with, above-mentioned sliding sleeve upside be installed between outer barrel at least together with sealing ring；It is solid and outer barrel between outside the downside of sliding sleeve
Dingan County is equipped with least one sealing ring；Be installed between outer barrel outside the bottom of top connection at least together with sealing ring；Ball seat
Be installed between sliding sleeve at least together with sealing ring；Be installed between outer barrel outside the top of lower contact at least together with
Sealing ring；Or/and, be provided with screw thread in the upside of outer barrel, outside the downside of outer barrel and top connection between be threadably secured and be arranged on
Together；Screw thread is provided with the downside of outer barrel, is threadably secured between outer barrel and lower contact and is installed together.
7. the leather cup of the anti-leather cup abrasion according to claim 1 or 2 or 3 or 4 or 6 insulates fracturing string, it is characterised in that
Catching ball cylinder includes cylinder and catches ball base；Pressure break side opening is located on cylinder；Screw thread is provided with the downside of cylinder, and by screw thread
It is installed with and catches ball base；Catch ball base and be provided with the upward and downward intercommunicating pore communicated with fracturing fluid transfer passage；Upward and downward connects
External diameter of the internal diameter of through hole less than ball seat.
8. the leather cup of anti-leather cup abrasion according to claim 5 insulates fracturing string, it is characterised in that catching ball cylinder includes cylinder
Body and catch ball base；Pressure break side opening is located on cylinder；Screw thread is provided with the downside of cylinder, and is threadably secured to be provided with and is caught
Ball base；Catch ball base and be provided with the upward and downward intercommunicating pore communicated with fracturing fluid transfer passage；The internal diameter of upward and downward intercommunicating pore is small
In the external diameter of ball seat.
9. the leather cup of the anti-leather cup abrasion according to claim 1 or 2 or 3 or 4 or 6 or 8 insulates fracturing string, and its feature exists
Hydraulic anchor is used in anchor.
10. the leather cup of anti-leather cup abrasion according to claim 7 insulates fracturing string, it is characterised in that anchor is used
Hydraulic anchor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349865.XU CN206280058U (en) | 2016-12-09 | 2016-12-09 | The leather cup packing fracturing string of anti-leather cup abrasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349865.XU CN206280058U (en) | 2016-12-09 | 2016-12-09 | The leather cup packing fracturing string of anti-leather cup abrasion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206280058U true CN206280058U (en) | 2017-06-27 |
Family
ID=59075098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621349865.XU Active CN206280058U (en) | 2016-12-09 | 2016-12-09 | The leather cup packing fracturing string of anti-leather cup abrasion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206280058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522912A (en) * | 2016-12-09 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Leather cup packing fracturing pipe string for preventing leather cup from being worn |
-
2016
- 2016-12-09 CN CN201621349865.XU patent/CN206280058U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522912A (en) * | 2016-12-09 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Leather cup packing fracturing pipe string for preventing leather cup from being worn |
| CN106522912B (en) * | 2016-12-09 | 2024-03-12 | 中国石油天然气集团有限公司 | Leather cup packing pressure-separation fracture-prevention pipe string capable of preventing leather cup from being worn |
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Effective date of registration: 20201104 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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