CN218716649U - Coiled tubing is with novel well drilling and milling drifting appurtenance - Google Patents
Coiled tubing is with novel well drilling and milling drifting appurtenance Download PDFInfo
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- CN218716649U CN218716649U CN202221910947.2U CN202221910947U CN218716649U CN 218716649 U CN218716649 U CN 218716649U CN 202221910947 U CN202221910947 U CN 202221910947U CN 218716649 U CN218716649 U CN 218716649U
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- connecting piece
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- spline
- drill collar
- drifting
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Abstract
The utility model relates to a novel drilling and grinding drifting auxiliary tool for a continuous oil pipe, which comprises a grinding shoe, a plurality of lateral wings and a central rod column, wherein the cylindrical surface of the central rod column is provided with the lateral wings which are distributed in a cross shape; the drill collar is connected with the mill shoe; the reinforced connecting piece is sleeved at the joint of the grinding shoe and the drill collar; one end of the reinforcing connecting piece limits the cross-shaped distributed side wings, and the other end of the reinforcing connecting piece is limited and locked with the drill collar in the circumferential direction; when the drill collar rotates, the drill collar drives the grinding shoe to rotate through the central rod column, and the grinding shoe is driven to rotate by applying force to the side wings through the reinforcing connecting piece. The utility model discloses the beneficial effect who reaches is: the strength is improved, the service life is prolonged, and the screw motor can work normally without a large-diameter screw motor.
Description
Technical Field
The utility model relates to an oil field bores and grinds technical field, especially a coiled tubing bores with novel brill and grinds drifting appurtenance.
Background
The oil drilling and drifting is a tripping operation performed to smoothly trip in a tool or the like, and generally, a time analysis is calculated as a next operation time, and the tripping operation performed to smoothly trip in a casing, for example, is called drifting.
Generally, drifting is needed under the following conditions, and different drilling tool structures are selected according to underground conditions during drifting when the well is logged, before casing is lowered, when the well is encountered and cannot be processed under the conventional drilling tool, the well is leaked, and the like, and the drilling cannot be continued.
The ordinary vertical well is normal underground, the well needs to be communicated after logging or before casing running, the well can be communicated by using a roller bit, a drill collar, a centralizer and a drill rod, and the well can be communicated by using a light drill collar structure if the well has lost circulation, collapse and the like. If the well is a directional well or a horizontal well, the small well deviation can be provided with a drill collar and a centralizer according to the underground condition, the purpose of the centralizer is to smooth the well wall so that the well wall becomes stable and smooth, the next step of continuous operation is facilitated, and if the well deviation is larger, the roller bit and the weighting drill rod can be directly used for drifting. The well is opened by a roller bit, but not by a PDC bit.
However, when drilling and grinding a drift well by a technical casing (the outer diameter is 244.5 mm), the conventional method is to drill and grind the drift well by a workover rig through a screw motor belt with the diameter of 120mm-159mm and a grinding shoe with the outer diameter of more than 200 mm. The large-diameter screw motor needs the flow rate of 600-1000L/min during working, so that the coiled tubing has small inner diameter, thin wall thickness and insufficient discharge capacity, and is not resistant to torque, thereby being not suitable for coiled tubing operation.
If the size of the screw motor is reduced, the whole drill rod is not easy to drive, and the diameter of the whole drill rod is reduced; the small diameter of the drill rod does not guarantee the strength at the drill bit.
Based on this, the inventor improves the whole drilling and grinding drifting auxiliary tool.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a coiled tubing is with novel brill grinds drifting appurtenance, the beneficial effect that the gain in strength that has, improvement life, need not major diameter screw motor also can normally work.
The purpose of the utility model is realized through the following technical scheme: a coiled tubing is with novel well drilling and milling drifting appurtenance includes:
the grinding shoe comprises a central rod column and a plurality of side wings, wherein the cylindrical surface of the central rod column is provided with the side wings which are distributed in a cross shape;
the drill collar is connected with the grinding shoe;
the reinforcing connecting piece is sleeved at the connecting part of the grinding shoe and the drill collar;
one end of the reinforcing connecting piece limits the cross-shaped distributed side wings, and the other end of the reinforcing connecting piece is limited and locked with the drill collar in the circumferential direction;
when the drill collar rotates, the drill collar drives the grinding shoe to rotate through the central rod column, and the grinding shoe is driven to rotate by applying force to the side wings through the reinforcing connecting piece.
Furthermore, the reinforcing connecting piece is cylindrical; one end of the reinforcing connecting piece is provided with a cross groove, and the other end of the reinforcing connecting piece is provided with a spline groove; the cross grooves are clamped on the cross-shaped distributed side wings; the spline groove is matched with the spline barrel part, and the spline barrel part is propped against and locked after being sleeved on the drill collar.
Preferably, after the spline cylinder part is meshed with the gear cylinder part, circumferential limiting is carried out; the tooth cylinder part is locked and propped against by the plurality of locking nut parts; the lower end of the spline barrel part is provided with a spline, and the upper end of the spline barrel part is provided with a limiting tooth A; the lower end of the gear cylinder part is provided with a limiting gear B;
when the gear barrel part is meshed with the spline barrel part, and the spline barrel part is matched with the key groove of the reinforcing connecting piece, when the side wing is subjected to drilling and grinding work, the reinforcing connecting piece can improve the stress strength of the side wing.
Preferably, the spline barrel part is sleeved on the reinforcing connecting piece at the lower end, and the inner wall of the lower end is provided with a spline.
Preferably, the number of the locking nut pieces is multiple, and the locking nut piece positioned at the uppermost end is subjected to taper treatment. The lifting of the whole auxiliary tool is prevented from being hindered.
Preferably, the reinforcing connecting piece is tapered with the lower end of the side wing. The obstruction to the drilling of the whole auxiliary tool is avoided.
Further, in the mill shoe: the central rod column is provided with a large-diameter column and a small-diameter column which form a stepped column shape, the large-diameter column is connected with the drill collar, and a plurality of side wings which are distributed in a cross shape are fixed on the periphery of the small-diameter column; the side wing axially extends out of the end face of the small-diameter column, and tungsten steel particles are buried and welded in a space area between the extending end of the side wing and the end face of the small-diameter column.
Preferably, when the tungsten steel particles are subjected to surfacing, liquid leakage gap holes are formed.
Preferably, the bottom surfaces of the side wings form a conical shape with a large top and a small bottom together, and the top surfaces of the side wings form a conical shape with a small top and a large bottom together; the individual side wings, viewed from the side, are in the shape of an isosceles trapezoid.
The utility model has the advantages of it is following:
1. the connection strength between the grinding shoe and the drill collar is enhanced by arranging the reinforcing connecting piece;
when the side wings in the mill shoes work, enough strength can be ensured through the reinforcing connecting pieces, and the service life of the side wings is prolonged;
2. the reinforcing connecting piece and the drill collar are circumferentially locked through the spline cylinder piece, the gear cylinder piece and the locking nut piece, so that sufficient strength is ensured on the basis of simple locking, and the reinforcing connecting piece is suitable for drilling, grinding and drifting work;
3. compared with the mode of a common drill bit, the structure of the milling shoe has the advantages that the weight is reduced, and a large-diameter screw motor is not needed to provide very large torque; and normal drilling and grinding well dredging operation can still be realized.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram showing the internal structure of the present invention;
FIG. 3 is a schematic view of the structure of the shoe coupled to the drill collar;
FIG. 4 is a schematic view of the connection between the mill shoe, the drill collar, and the reinforcing connecting member;
FIG. 5 is a schematic view of a reinforcing connector;
FIG. 6 is a cross-sectional view of a reinforcement link;
FIG. 7 is a schematic structural view of a spline barrel;
FIG. 8 is a schematic view of the arrangement between the spline barrel member and the tooth barrel member;
in the figure: 1-milling shoe, 101-center pole, 102-side wing, 2-drill collar, 3-reinforcing connecting piece, 301-spline groove, 4-spline barrel piece, 401-spline, 402-limit tooth A, 5-spline barrel piece, 501-limit tooth B, 6-locking nut piece and 7-tungsten steel particle.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1 to 6, a novel drilling and grinding drifting auxiliary tool for a coiled tubing comprises a mill shoe 1, a drill collar 2 and a reinforcing connecting piece 3; wherein, the milling shoe 1 is installed at the end of the drill collar 2 in a threaded connection way, and a reinforced connecting piece 3 is sleeved outside the joint of the milling shoe and the drill collar.
In particular, the milling shoe 1 has a central post 101, the cylindrical surface of the central post 101 having lateral wings 102 distributed in a cross; one end of the reinforcing connecting piece 3 limits the cross-shaped distributed side wings 102, and the other end of the reinforcing connecting piece is limited and locked with the drill collar 2 in the circumferential direction. When the drill collar 2 rotates, the drill collar drives the milling shoe 1 to rotate through the central rod column 101, and the reinforced connecting piece 3 applies force to the side wing 102 to drive the milling shoe 1 to rotate.
In the present embodiment, as shown in fig. 4 to 6, the reinforcing connecting member 3 is cylindrical; and one end of the reinforcing connecting piece 3 is provided with a cross-shaped groove, and the other end is provided with a spline groove 301. When the device is installed, the cross-shaped groove is clamped on the cross-shaped distributed side wings 102; the spline groove 301 is matched with the spline cylinder part 4, and the spline cylinder part 4 is sleeved on the drill collar 2 and then propped against and locked.
Further, the spline barrel 4 has a spline 401 at its lower end and a limit tooth a402 at its upper end; and the lower end of the gear cylinder 5 is provided with a limiting tooth B501. When the gear rack is installed, the limiting teeth A402 are in fit engagement with the limiting teeth B501, and the gear rack piece 5 is locked and abutted by the plurality of locking nut pieces 6.
It should be noted that the gear cylinder 5 is matched with the drill collar 2 through threads, and the limit teeth a402 and the limit teeth B501 are isosceles trapezoid teeth. The width between the corresponding limiting teeth is larger than the width of the limiting teeth; the goal to achieve is that the stop tooth B501 screws from point a to point B, engaging the stop tooth a402, as shown in fig. 8.
When in work: when the drill collar 2 rotates, the locking nut member 6, the gear barrel member 5 and the spline barrel member 4 are driven to rotate, the spline barrel member 4 drives the reinforcing connecting member 3 to rotate, and the reinforcing connecting member 3 applies torque force to the side wing 102.
In addition, during operation, after the gear barrel part 5 is meshed with the spline barrel part 4 and the spline barrel part 4 is in key groove fit with the reinforcing connecting piece 3, when the flank 102 performs drilling and grinding operation, the reinforcing connecting piece 3 can improve the stress strength of the flank 102.
Further, as shown in fig. 7, the spline cylinder member 4 has a lower end fitted over the reinforcing connecting member 3 and an inner wall of the lower end provided with splines 401.
Furthermore, the number of the locking nut members 6 is multiple, and the locking nut member 6 positioned at the uppermost end is subjected to taper treatment. The reinforcing connecting piece 3 is tapered at the lower end where the side wing 102 is installed.
Alternatively, a new coiled tubing drift aid, as shown in FIG. 3, is designed for the mill shoe 2.
Specifically, the milling shoe 1 comprises a central pole 101, a plurality of lateral wings 102; the central rod 101 has a large-diameter column connected to the drill collar 2 and a small-diameter column having a plurality of cross-shaped flanks 102 fixed on the periphery thereof. Moreover, the flank 102 axially extends out of the end face of the small-diameter column, and tungsten steel particles 7 are buried and welded in a space region between the extending end of the flank 102 and the end face of the small-diameter column.
In this embodiment, the tungsten steel particles 7 are formed into liquid leakage gaps during the build-up welding.
The bottom surfaces of the side wings 102 form a tapered shape with a large top and a small bottom together, and the top surfaces of the side wings form a tapered shape with a small top and a large bottom together; the individual side wings 102, viewed from the side, are in the shape of an isosceles trapezoid.
It should be noted that, as required, a central hole is formed on the central drill rod 101, and a liquid outlet hole is formed on the small-diameter column.
The above examples only represent preferred embodiments, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (9)
1. The utility model provides a coiled tubing is with novel well drilling and milling appurtenance that leads to well which characterized in that: comprises the following steps of;
a milling shoe (1) having a center pole (101) and a plurality of lateral wings (102), wherein the lateral wings (102) are distributed in a cross shape on the cylindrical surface of the center pole (101);
the drill collar (2) is connected with the mill shoe (1);
the reinforcing connecting piece (3) is sleeved at the connecting part of the milling shoe (1) and the drill collar (2);
one end of the reinforced connecting piece (3) limits the cross-shaped distributed side wings (102), and the other end of the reinforced connecting piece is circumferentially limited and locked with the drill collar (2);
when the drill collar (2) rotates, the drill collar drives the milling shoe (1) to rotate through the central rod column (101), and the milling shoe (1) is driven to rotate by applying force to the side wing (102) through the reinforcing connecting piece (3).
2. The novel drilling and milling drifting auxiliary tool for the coiled tubing according to claim 1, wherein: the reinforcing connecting piece (3) is in a cylindrical shape;
one end of the reinforcing connecting piece (3) is provided with a cross groove, and the other end of the reinforcing connecting piece is provided with a spline groove (301);
the cross grooves are clamped on the cross-shaped distributed side wings (102);
the spline groove (301) is matched with the spline barrel part (4), and the spline barrel part (4) is sleeved on the drill collar (2) and then is propped against and locked.
3. The novel drilling and milling drifting auxiliary tool for the coiled tubing according to claim 2, wherein: the spline cylinder part (4) is meshed with the gear cylinder part (5) and then is circumferentially limited;
the tooth cylinder part (5) is locked and propped against by a plurality of locking nut parts (6);
the spline barrel part (4) is provided with a spline (401) at the lower end and limiting teeth A (402) at the upper end;
the lower end of the gear cylinder part (5) is provided with a limiting gear B (501);
when tooth barrel spare (5) and spline barrel spare (4) meshing, and spline barrel spare (4) and reinforcing connecting piece (3) keyway cooperation back, when flank (102) bore and grind the work, reinforcing connecting piece (3) can improve the stress strength of flank (102).
4. The novel drilling and milling drifting auxiliary tool for the coiled tubing according to claim 2 or 3, characterized in that: the lower end of the spline cylinder piece (4) is sleeved on the reinforcing connecting piece (3), and the inner wall of the lower end of the spline cylinder piece is provided with a spline (401).
5. The novel drilling and milling drifting auxiliary tool for the coiled tubing according to claim 4, wherein: the number of the locking nut pieces (6) is multiple, and the locking nut piece (6) positioned at the uppermost end is subjected to taper treatment.
6. The novel drilling and milling drifting auxiliary tool for the coiled tubing according to claim 2, wherein: the lower end of the reinforcing connecting piece (3) which is arranged with the side wing (102) is subjected to taper treatment.
7. The novel drilling and milling drifting auxiliary tool for the coiled tubing as claimed in claim 1, wherein: in the milling shoe (1):
the central rod column (101) is provided with a large-diameter column and a small-diameter column which form a stepped column shape, the large-diameter column is connected with the drill collar (2), and a plurality of side wings (102) distributed in a cross shape are fixed on the periphery of the small-diameter column;
the side wing (102) axially extends out of the end face of the small-diameter column, and tungsten steel particles (7) are buried and welded in a space area between the extending end of the side wing (102) and the end face of the small-diameter column.
8. The novel drilling and milling drifting auxiliary tool for the coiled tubing according to claim 7, wherein: when the tungsten steel particles (7) are subjected to surfacing, liquid leakage gap holes are formed.
9. The novel drilling and milling drifting auxiliary tool for the coiled tubing according to claim 7 or 8, wherein: the bottom surfaces of the side wings (102) form a conical shape with a large top and a small bottom together, and the top surfaces of the side wings form a conical shape with a small top and a large bottom together;
the individual side wings (102) are in the shape of an isosceles trapezoid when viewed from the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221910947.2U CN218716649U (en) | 2022-07-22 | 2022-07-22 | Coiled tubing is with novel well drilling and milling drifting appurtenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221910947.2U CN218716649U (en) | 2022-07-22 | 2022-07-22 | Coiled tubing is with novel well drilling and milling drifting appurtenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218716649U true CN218716649U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221910947.2U Active CN218716649U (en) | 2022-07-22 | 2022-07-22 | Coiled tubing is with novel well drilling and milling drifting appurtenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218716649U (en) |
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2022
- 2022-07-22 CN CN202221910947.2U patent/CN218716649U/en active Active
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