CN114016930A - Downhole tool string for coiled tubing operation - Google Patents
Downhole tool string for coiled tubing operation Download PDFInfo
- Publication number
- CN114016930A CN114016930A CN202111043419.1A CN202111043419A CN114016930A CN 114016930 A CN114016930 A CN 114016930A CN 202111043419 A CN202111043419 A CN 202111043419A CN 114016930 A CN114016930 A CN 114016930A
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- CN
- China
- Prior art keywords
- centralizer
- groove
- ring
- oil pipe
- pipe joint
- 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.)
- Withdrawn
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 39
- 230000000694 effects Effects 0.000 claims 3
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
Abstract
The invention discloses a downhole tool string for coiled tubing operation, which comprises an oil pipe joint, a centralizer, a hydraulic jetting tool, a balance valve, a packer and a coupling positioner, wherein a connecting mechanism is arranged between the oil pipe joint and the centralizer, the connecting mechanism comprises a base ring, insert plates and a rotating ring, the base ring is fixed at the end part of the oil pipe joint, the rotating ring is rotatably arranged at the end part of the centralizer, the two insert plates are symmetrically fixed on the surface of the base ring, and two slots are symmetrically formed in the surface of one side of the rotating ring; through setting up by base ring, picture peg, swivel, spacing peg, slide, U-shaped stopper, T shape spout, spring and T shape slider isotructure for completion built-up connection that can be quick between oil pipe joint and the centralizer, thereby increase substantially the packaging efficiency of instrument cluster in the pit, the operating personnel actual operation of being convenient for, also be convenient for simultaneously follow-up split between oil pipe joint and the centralizer, improve subsequent split efficiency.
Description
Technical Field
The invention belongs to the technical field of downhole tool strings, and particularly relates to a downhole tool string for coiled tubing operation.
Background
In the natural gas exploitation construction process, a multistage perforating device is needed to realize subsection perforating, an underground tool string is a key equipment which directly influences the construction quality, the underground tool string generally consists of an oil pipe joint, a centralizer, a hydraulic jetting tool, a balance valve, a packer and a casing collar locator,
when the existing underground tool string is used, an oil pipe joint is arranged at the end part of a centralizer, but the connection mode between the oil pipe joint and the centralizer is complicated, so that inconvenience is brought to the assembly of the underground tool string for operators, and the connection stability and the sealing performance between the oil pipe joint and the centralizer are poor, so that the defects exist, and the underground tool string for coiled tubing operation is provided.
Disclosure of Invention
The invention aims to provide a downhole tool string for coiled tubing operation, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a tool string in pit of coiled tubing operation, includes tubing joint, centralizer, hydraulic jet instrument, balanced valve, packer and coupling locator, be equipped with coupling mechanism between tubing joint and the centralizer, coupling mechanism includes base ring, picture peg and swivel, the tip at tubing joint is fixed to the base ring, the swivel rotates and installs the tip at the centralizer, two the picture peg symmetry is fixed on the surface of base ring, one side surface symmetry of swivel is opened and is equipped with two slots, the tip of picture peg inserts to the slot in, the tip fixed surface of picture peg has spacing peg, two L shape hanging grooves have been seted up to the surface symmetry of swivel, spacing peg card is in the bottom of L shape hanging groove, the surface of swivel all slides for one side of two L shape hanging grooves and is provided with the slide plate, one side of slide plate is fixed with the U-shaped stopper, and the U-shaped limiting block is sleeved at the end part of the limiting hanging rod.
Preferably, the surface of the swivel is provided with a T-shaped sliding groove relative to one side of the two L-shaped hanging grooves, a T-shaped sliding block and a spring are arranged inside the T-shaped sliding groove, and the top end of the T-shaped sliding block is fixed with the sliding plate.
Preferably, a circular groove is formed in one side surface of the T-shaped slider, and one end of the spring is embedded into the circular groove.
Preferably, the movable groove has been seted up to the inside of slide, and the inside in movable groove is provided with the movable block, the top of movable block is fixed with fastening bolt, the top in movable groove sets up threaded hole, and fastening bolt's top runs through to the outside of slide, fastening bolt's top surface cover is equipped with the clamp plate, the tip fixed surface of clamp plate has the spacing piece, the spacing groove has been seted up on the tip surface of spacing peg, the spacing piece imbeds to the spacing inslot.
Preferably, a ring rail is fixed on the surface of the centralizer, an annular rotating groove is formed in the inner side of the rotating ring, and the ring rail is located in the annular rotating groove.
Preferably, the end part of the oil pipe joint is provided with an integrated inserting barrel, the end surface of the centralizer is provided with an end groove, and a sealing structure is arranged between the oil pipe joint and the centralizer.
Preferably, the sealing structure comprises a first sealing ring and a second sealing ring, a first sealing groove is formed in the end surface of the oil pipe joint, and a second sealing groove is formed in the end surface of the insert cylinder.
Preferably, the end surface of the centralizer is provided with a first mounting groove, the first sealing ring is installed in the first mounting groove in a clamping manner, the bottom end of the end groove is provided with a second mounting groove corresponding to the second sealing ring, and the second sealing ring is installed in the second mounting groove in a clamping manner.
Compared with the prior art, the invention has the beneficial effects that:
1. through setting up by base ring, picture peg, swivel, spacing peg, slide, U-shaped stopper, T shape spout, spring and T shape slider isotructure for completion built-up connection that can be quick between oil pipe joint and the centralizer, thereby increase substantially the packaging efficiency of instrument cluster in the pit, the operating personnel actual operation of being convenient for, also be convenient for simultaneously follow-up split between oil pipe joint and the centralizer, improve subsequent split efficiency.
2. Through the seal structure who sets up between oil pipe joint and centralizer, can increase substantially the leakproofness of oil pipe joint and centralizer junction to improve the stability in use of instrument cluster in the pit, and first sealing washer and the second sealing washer in the seal structure are easily changed.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of the area A of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged view of a portion of the area B of FIG. 2 in accordance with the present invention;
FIG. 4 is a top cross-sectional view of the connection of the tubing joint and centralizer of the present invention;
FIG. 5 is an enlarged view of a portion of the invention in the area C of FIG. 4;
FIG. 6 is an enlarged view of a portion of the invention in the area E of FIG. 5;
FIG. 7 is an enlarged view of a portion of the invention taken in the area D of FIG. 4;
in the figure: 1. an oil pipe joint; 2. a centralizer; 3. a hydrajetting tool; 4. a balancing valve; 5. a packer; 6. a collar locator; 7. a base ring; 8. inserting plates; 9. rotating the ring; 10. an L-shaped hanging groove; 11. a slide plate; 12. a limiting hanging rod; 13. a U-shaped limiting block; 14. pressing a plate; 15. inserting a cylinder; 16. a T-shaped chute; 17. A spring; 18. a T-shaped slider; 19. fastening a bolt; 20. a movable groove; 21. a movable block; 22. a first seal ring; 23. and a second seal ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1 to 7, the present invention provides a technical solution: a downhole tool string for coiled tubing operation comprises an oil pipe joint 1, a centralizer 2, a hydraulic jetting tool 3, a balance valve 4, a packer 5 and a coupling positioner 6 which are sequentially connected from left to right, a connecting mechanism is arranged between the oil pipe joint 1 and the centralizer 2, the connecting mechanism comprises a base ring 7, insert plates 8 and a rotating ring 9, the base ring 7 is fixed at the end part of the oil pipe joint 1, the rotating ring 9 is rotatably arranged at the end part of the centralizer 2, the two insert plates 8 are symmetrically fixed on the surface of the base ring 7, two slots corresponding to the insert plates 8 are symmetrically arranged on the surface of one side of the rotating ring 9, the end parts of the insert plates 8 are inserted into the slots, a limit hanging rod 12 is fixed on the surface of the end part of the insert plate 8, two L-shaped hanging grooves 10 corresponding to the limit hanging rod 12 are symmetrically arranged on the surface of the rotating ring 9, the L-shaped hanging grooves 10 are communicated with the slots, the limit hanging rod 12 is clamped at the bottom end of the L-shaped hanging grooves 10, the surface of swivel 9 all slides for one side of two L shape hanging groove 10 and is provided with slide 11, one side of slide 11 is fixed with U-shaped stopper 13, and U-shaped stopper 13 cover is at the tip of spacing hanging rod 12, make completion built-up connection that can be quick between oil pipe joint 1 and the centralizer 2, T shape spout 16 has all been seted up for one side of two L shape hanging groove 10 on the surface of swivel 9, and the inside of T shape spout 16 is provided with T shape slider 18 and spring 17, the top of T shape slider 18 is fixed mutually with slide 11, make slide 11 can be always with U-shaped stopper 13 cover carry on spacingly at the tip of spacing hanging rod 12 under the condition that does not receive external force.
In this embodiment, preferably, a circular groove corresponding to the spring 17 is formed on one side surface of the T-shaped slider 18, and one end of the spring 17 is inserted into the circular groove to prevent the spring 17 from deviating.
In this embodiment, it is preferred, movable groove 20 has been seted up to the inside of slide 11, and the inside of movable groove 20 is provided with movable block 21, the top of movable block 21 is fixed with fastening bolt 19, the corresponding screw hole with fastening bolt 19 has been seted up to the top of movable groove 20, and fastening bolt 19's top runs through to the outside of slide 11, fastening bolt 19's top surface cover is equipped with clamp plate 14, the tip fixed surface of clamp plate 14 has the spacing piece, the spacing groove corresponding with the spacing piece has been seted up on the tip surface of spacing peg 12, the spacing piece is embedded into the spacing inslot, be used for spacing peg 12 and slide 11 further spacing.
In this embodiment, preferably, a circular track is fixed on the surface of the centralizer 2, and an annular rotating groove corresponding to the circular track is formed on the inner side of the rotating ring 9, and the circular track is located in the annular rotating groove, so that the rotating ring 9 can smoothly rotate on the surface of the centralizer 2.
In this embodiment, preferably, an integrated insert cylinder 15 is disposed at an end of the oil pipe joint 1, an end groove corresponding to the insert cylinder 15 is disposed on an end surface of the centralizer 2, a sealing structure is further disposed between the oil pipe joint 1 and the centralizer 2, the sealing structure includes a first sealing ring 22 and a second sealing ring 23, a first sealing groove corresponding to the first sealing ring 22 is disposed on the end surface of the oil pipe joint 1, a second sealing groove corresponding to the second sealing ring 23 is disposed on the end surface of the insert cylinder 15, so as to improve the connection sealing performance between the oil pipe joint 1 and the centralizer 2, a first mounting groove is disposed on the end surface of the centralizer 2, the first sealing ring 22 is mounted in the first mounting groove in a clamping manner, a second mounting groove corresponding to the second sealing ring 23 is disposed at a bottom end of the end groove, the second sealing ring 23 is mounted in the second mounting groove in a clamping manner, first sealing washer 22 and second sealing washer 23 all are equipped with the ring pad of integral type by the rubber material component, one side of first sealing washer 22 and second sealing washer 23, and one side of ring pad is equipped with the dop of a plurality of integral types, and a plurality of T shape draw-in grooves corresponding with the dop have all been seted up to the inboard in first mounting groove and second mounting groove for first sealing washer 22 and second sealing washer 23 are easily installed and are changed.
The working principle and the using process of the invention are as follows: when the underground tool string is used and an oil pipe joint 1 and a centralizer 2 need to be combined and connected, an inserting cylinder 15 at the end part of the oil pipe joint 1 is firstly inserted into an end groove at the end part of the centralizer 2, the end part of an inserting plate 8 is inserted into a slot inside a rotary ring 9, a limiting hanging rod 12 is simultaneously made to slide into the inner side of an L-shaped hanging groove 10, the rotary ring 9 is rotated at the moment, the limiting hanging rod 12 is made to slide in the L-shaped hanging groove 10, then a sliding plate 11 is laterally moved, a T-shaped sliding block 18 is made to slide in the inner side of a T-shaped sliding groove 16, a U-shaped limiting block 13 is made not to block the limiting hanging rod 12 until the limiting hanging rod 12 smoothly slides to the bottom end of the L-shaped hanging groove 10, the sliding plate 11 is loosened at the moment, a spring 17 pushes the T-shaped sliding block 18 back under the elastic action of the spring, the sliding plate 11 is made to reset, and the U-shaped limiting block 13 is made to block the end part of the limiting hanging rod 12 to limit the limiting hanging rod 12, then the clamp plate 14 is rotated, so that the end part of the clamp plate 14 is aligned with the limiting hanging rod 12, then the fastening bolt 19 is screwed by the hexagon socket head cap screw, so that the movable block 21 moves downwards, the clamp plate 14 moves downwards, so that the limiting block is embedded into the limiting groove at the end part of the limiting hanging rod 12, the quick connection between the oil pipe joint 1 and the centralizer 2 can be completed, the connecting mode is more complicated than that of the original device, the connecting efficiency can be improved, and the stability after the connection is effectively improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a tool string in pit of coiled tubing operation, includes tubing joint (1), centralizer (2), hydraulic jetting tool (3), balanced valve (4), packer (5) and coupling locator (6), be equipped with coupling mechanism, its characterized in that between tubing joint (1) and centralizer (2): the connecting mechanism comprises a base ring (7), an inserting plate (8) and a rotating ring (9), the base ring (7) is fixed at the end part of the oil pipe joint (1), the rotating ring (9) is rotated and installed at the end part of the centralizer (2), two inserting plates (8) are symmetrically fixed on the surface of the base ring (7), two slots are symmetrically formed in one side surface of the rotating ring (9), the end part of the inserting plate (8) is inserted into the slots, a limiting hanging rod (12) is fixed on the surface of the end part of the inserting plate (8), two L-shaped hanging grooves (10) are symmetrically formed in the surface of the rotating ring (9), the limiting hanging rod (12) is clamped at the bottom ends of the L-shaped hanging grooves (10), a sliding plate (11) is arranged on the surface of the rotating ring (9) in a sliding mode relative to one side of the two L-shaped hanging grooves (10), a U-shaped limiting stopper (13) is fixed on one side of the sliding plate (11), and the U-shaped limiting block (13) is sleeved at the end part of the limiting hanging rod (12).
2. The coiled tubing operated downhole tool string of claim 1, wherein: t-shaped sliding grooves (16) are formed in the surface of the rotating ring (9) relative to one side of the two L-shaped hanging grooves (10), T-shaped sliding blocks (18) and springs (17) are arranged inside the T-shaped sliding grooves (16), and the top ends of the T-shaped sliding blocks (18) are fixed with the sliding plate (11).
3. The coiled tubing operated downhole tool string of claim 2, wherein: a circular groove is formed in the surface of one side of the T-shaped sliding block (18), and one end of the spring (17) is embedded into the circular groove.
4. The coiled tubing operated downhole tool string of claim 1, wherein: activity groove (20) have been seted up to the inside of slide (11), and the inside in activity groove (20) is provided with movable block (21), the top of movable block (21) is fixed with fastening bolt (19), the top open screw hole of activity groove (20), just the outside to slide (11) is run through on the top of fastening bolt (19), the top surface cover of fastening bolt (19) is equipped with clamp plate (14), the tip fixed surface of clamp plate (14) has the spacing piece, the spacing groove has been seted up on the tip surface of spacing peg (12), the spacing piece imbeds to the spacing inslot.
5. The coiled tubing operated downhole tool string of claim 1, wherein: the surface of the centralizer (2) is fixed with a ring rail, the inner side of the rotating ring (9) is provided with an annular rotating groove, and the ring rail is positioned in the annular rotating groove.
6. The coiled tubing operated downhole tool string of claim 1, wherein: the end part of the oil pipe joint (1) is provided with an integrated inserting barrel (15), the end surface of the centralizer (2) is provided with an end groove, and a sealing structure is arranged between the oil pipe joint (1) and the centralizer (2).
7. The coiled tubing operated downhole tool string of claim 6, wherein: the sealing structure comprises a first sealing ring (22) and a second sealing ring (23), a first sealing groove is formed in the end surface of the oil pipe joint (1), and a second sealing groove is formed in the end surface of the insert cylinder (15).
8. The coiled tubing operated downhole tool string of claim 7, wherein: the end surface of the centralizer (2) is provided with a first mounting groove, the first sealing ring (22) is clamped and mounted in the first mounting groove, the bottom end of the end groove is provided with a second mounting groove corresponding to the second sealing ring (23), and the second sealing ring (23) is clamped and mounted in the second mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111043419.1A CN114016930A (en) | 2021-09-07 | 2021-09-07 | Downhole tool string for coiled tubing operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111043419.1A CN114016930A (en) | 2021-09-07 | 2021-09-07 | Downhole tool string for coiled tubing operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114016930A true CN114016930A (en) | 2022-02-08 |
Family
ID=80054385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111043419.1A Withdrawn CN114016930A (en) | 2021-09-07 | 2021-09-07 | Downhole tool string for coiled tubing operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114016930A (en) |
-
2021
- 2021-09-07 CN CN202111043419.1A patent/CN114016930A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220208 |