CN216691024U - Drill-post type bidirectional milling cone and drill-post type bidirectional milling cone combined drilling tool - Google Patents
Drill-post type bidirectional milling cone and drill-post type bidirectional milling cone combined drilling tool Download PDFInfo
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- CN216691024U CN216691024U CN202122371297.0U CN202122371297U CN216691024U CN 216691024 U CN216691024 U CN 216691024U CN 202122371297 U CN202122371297 U CN 202122371297U CN 216691024 U CN216691024 U CN 216691024U
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- 238000003801 milling Methods 0.000 title claims abstract description 132
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 41
- 238000005553 drilling Methods 0.000 title claims abstract description 28
- 239000000956 alloy Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229910052602 gypsum Inorganic materials 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Abstract
The utility model provides a drill post type bidirectional milling cone and a drill post type bidirectional milling cone combined drilling tool. The bidirectional milling cone comprises an upper joint, a milling cone body and a lower joint which are sequentially connected, wherein the milling cone body comprises an upper cone body, a cylinder body and a lower cone body which are sequentially connected, the upper cone body is connected with the upper joint, the lower cone body is connected with the lower joint, a first cavity is arranged in the upper joint, a second cavity and a third cavity are arranged in the milling cone body, the third cavity is arranged in the lower cone body, and the first cavity, the second cavity and the third cavity are axially communicated and mutually communicated. The drill column type bidirectional milling cone combined drilling tool comprises the bidirectional milling cone and a drill collar connected with the lower connector. The utility model has simple structure and low manufacturing cost; the milling efficiency can be improved in the milling process, and the vertical double milling is realized; the drilling tool is convenient to connect, and the lower end of the cone is convenient to guide the milling cone to enter in the downward milling process.
Description
Technical Field
The utility model relates to the technical field of petroleum drilling, in particular to a drill column type bidirectional milling cone and a drill column type bidirectional milling cone combined drilling tool.
Background
Most oil gas well oil reservoir sleeve pipe external diameter is 177.8mm, and oil gas well through many years' development, the oil reservoir sleeve pipe that is located the gypsum layer interval causes the sleeve pipe attenuate through the corrosion of gypsum rock salt, and the gypsum wriggles and leads to the sleeve pipe to break and warp, causes to go into the instrument difficulty during workover. The existing milling cone can only mill downwards, and is easy to mill through a casing or mill a new borehole. When the milling cone is used for downwards milling the casing pipe, the broken casing pipe is inwards deformed again at the position of the casing pipe which is broken and deformed in a gypsum creeping stratum due to the creeping of the gypsum, so that the milling cone cannot be taken out, and the work is passive. For diameter shrinkage and collapse of an open hole well section, a common milling cone or a drill bit is often used for reaming a hole, so that a new well hole is easy to ream; secondly, the drilling meets the block after reaming the hole, and the hole is difficult to be reamed; thirdly, the operation period is increased.
Patent CN204371176U discloses a composite helical milling cone, which includes: the milling cone body is internally provided with a through hole which is communicated along the axial direction; the end cap is connected to one end of the milling cone body, a plurality of side holes are formed in the end cap, and the side holes are communicated with the through holes; the first hard alloy strips are welded and connected to the outer surface of the milling cone body in a spiral shape; the second hard alloy strips are spirally welded on the outer surface of the milling cone body, the second hard alloy strips and the first hard alloy strips are alternately arranged, and a spiral water groove is formed in the outer surface of the milling cone body between the second hard alloy strips and the first hard alloy strips. The utility model discloses a combined type spiral mills awl although has stronger cutting ability, but only can mill downwards, marks out new well easily, increases the operation risk.
SUMMERY OF THE UTILITY MODEL
In view of the deficiencies in the prior art, it is an object of the present invention to address one or more of the problems in the prior art as set forth above. For example, one of the purposes of the utility model is to solve the problem that the drill bit is blocked after the milling cone mills downwards; the second purpose is to realize the forward and reverse well-drilling; the third purpose is to prevent wear of the casing and the marking of a new borehole during milling.
In order to achieve the above object, the present invention provides a drill-stem type bidirectional milling cone.
The bidirectional milling cone comprises an upper joint, a milling cone body and a lower joint which are sequentially connected, wherein the upper joint is provided with a first cavity which is axially communicated; the milling cone body is provided with a second cavity which is axially communicated and can comprise an upper cone, a cylinder and a lower cone which are sequentially connected, the upper cone is connected with the upper joint, the radial size of the upper cone is gradually increased along a first direction, the underground size of the lower cone is gradually reduced, and the first direction is the direction from the upper joint to the lower joint; the lower vertebral body is provided with a third cavity which is axially communicated, and the first cavity, the second cavity and the third cavity are communicated.
According to an exemplary embodiment of the present invention, an angle between the tapered surface of the upper cone and the central axis thereof may be less than 10 degrees. Further, the angle may be 5 to 10 degrees, such as 6, 7, 8, 9 degrees, etc.
According to an exemplary embodiment of the present invention, an angle between the conical surface of the lower cone and the central axis thereof may be below 10 degrees. Further, the angle may be 5 to 10 degrees, such as 6, 7, 8, 9 degrees, etc.
According to an exemplary embodiment of the present invention, the lower end of the lower joint may be connected with a drilling tool, and the connection manner between the lower joint and the drilling tool may include a snap connection, a threaded connection, and the like; may be a threaded connection.
According to an exemplary embodiment of the present invention, a plurality of water grooves are formed on a surface of the milling cone body.
According to an exemplary embodiment of the utility model, the plurality of water grooves are evenly distributed on the surface of the milling cone body.
According to an exemplary embodiment of the present invention, the number of the water tanks may be 3 to 8, such as 4, 5, 6, etc.
According to an exemplary embodiment of the utility model, the upper joint, the milling cone body and the lower joint may be concentric.
The utility model also provides a drill column type bidirectional milling cone combined drilling tool.
The drill stem type bidirectional milling cone combined drilling tool can comprise: the drill collar comprises a first drill collar and the drill column type bidirectional milling cone, wherein one end of the first drill collar is connected with the lower joint.
According to an exemplary embodiment of the utility model, a gear milling joint is connected to the other end of the drill collar.
According to an exemplary embodiment of the present invention, the composite drilling tool may further comprise a second drill collar and a drill pipe connected, the second drill collar being connected with the upper joint.
Compared with the prior art, the beneficial effects of the utility model can include: the structure is simple and convenient, and the manufacturing cost is low; the milling efficiency can be improved in the milling process, and the vertical double milling is realized; the drilling tool is convenient to connect; the lower taper facilitates guiding the milling cone into during the down milling process.
Drawings
The above and other objects and features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:
fig. 1 shows a schematic view of a drill-post bi-directional milling cone of the present invention.
Description of reference numerals:
1-upper joint, 11-first cavity;
2-milling cone body, 21-second cavity, 22-upper cone, 23-column, 24-lower cone and 25-water tank; 3-lower joint, 31-third cavity.
Detailed Description
Hereinafter, the drill-stem bi-directional milling cone of the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.
It should be noted that "first", "second", "third", "fourth", etc. are merely for convenience of description and for convenience of distinction, and are not to be construed as indicating or implying relative importance. "upper," "lower," "left," "right," "front," "rear," "inner," "outer," and "outer" are merely for convenience of description and relative positional or orientational relationships, and do not indicate or imply that the referenced components must have that particular orientation or position.
Exemplary embodiment 1
The present exemplary embodiment provides a drill-string type bidirectional milling cone.
Fig. 1 shows a schematic view of a drill-post bi-directional milling cone of the present invention.
As shown in fig. 1, the bidirectional milling cone may include an upper joint 1, a milling cone body 2, and a lower joint 3, which are connected in sequence.
Wherein, the upper joint 1, the milling cone body 2 and the lower joint 3 can be coaxial.
In the present embodiment, as shown in fig. 1, the upper joint 1 has a first cavity 11 therein, and the first cavity 11 axially penetrates through the upper joint 1. The first cavity 11 may include a frustum cavity and a cylindrical cavity connected thereto.
In the present embodiment, as shown in fig. 1, the milling cone body 2 has a second cavity 21 therein, and the second cavity 21 axially penetrates through the milling cone body 2.
In this embodiment, as shown in fig. 1, the lower joint may have a third cavity 31, and the third cavity 31 penetrates the lower joint 3 in the axial direction. The diameters of the second cavity 21 and the third cavity 31 may be the same.
In the present embodiment, as shown in fig. 1, the first cavity 11, the second cavity 21, and the third cavity 31 are mutually communicated and may be coaxial.
The first chamber 11, the second chamber 21 and the third chamber 31 may all together form a central port.
In the present embodiment, as shown in fig. 1, the milling cone body 2 may include an upper cone 22, a cylinder 23, and a lower cone 24, and the upper cone 22, the cylinder 23 and the lower cone 24 are connected in sequence.
Wherein the superior vertebral body 22 is connected to the superior junction 1 and the inferior vertebral body 24 is connected to the inferior junction 3.
In this embodiment, the taper of the superior vertebral body may be less than 10 degrees, such as 1, 3, 5, 6, 7, 8, 9, etc.; furthermore, the taper of the upper cone can be 5-10 degrees. Wherein, the taper refers to the included angle between the conical surface of the upper vertebral body and the central axis.
Wherein, the radial dimension of the upper vertebral body is gradually increased along with the first direction, and the first direction is the direction from the upper joint to the lower joint.
In this embodiment, the taper of the inferior vertebral body may be less than 10 degrees, such as 1, 3, 5, 6, 7, 8, 9, etc.; furthermore, the taper of the lower cone can be 5-10 degrees. Wherein, the taper refers to the included angle between the conical surface of the lower cone body and the central axis.
Wherein, the radial dimension of inferior centrum reduces along with first direction gradually, and first direction is the direction of top connection to lower clutch.
Compared with the common milling cone, the bidirectional milling cone has the advantages that the conicity of the cone bodies at the two ends of the bidirectional milling cone body is more gradual, the milling efficiency can be improved in the milling process, and the up-down double milling is realized.
In this embodiment, the outer surface of the milling cone body may be provided with a hard alloy, and the hard alloy may be disposed on the outer surface of the milling cone body in a build-up welding manner.
In other words, the outer surfaces of the superior vertebral body 22, the cylindrical body 23, and the inferior vertebral body 24 are provided with cemented carbide as shown in FIG. 1.
In this embodiment, the outer diameter of the body of the milling cone is larger than the outer diameters of the upper joint and the lower joint, so that the casing can be effectively protected and a new borehole can be prevented from being scribed.
In the present embodiment, as shown in fig. 1, 3 to 8 water tanks 25, for example, 4, 5, 6, and 7, are uniformly distributed on the surface of the milling cone body 2.
Further, a plurality of water channels may be uniformly distributed on the outer surface of the milling cone body, for example, 4 water channels are uniformly distributed, and two water channels are spaced by 90 degrees. And each of the troughs may run in the same direction as the first direction described above.
In this embodiment, the lower adapter may have a tapered section, such as the right end of the lower adapter 3 shown in FIG. 1, which is tapered to facilitate entry of the pilot cone during the down-milling process.
In this embodiment, the lower joint may be connected to a drilling tool, and the well may be a drill collar. The connection between the lower structure and the well may comprise a threaded connection, a snap connection, welding, etc. Preferably, a threaded connection may be used between the two, such as a lower connection to add connecting threads for connecting a drilling tool.
The drill stem type bidirectional milling cone has the following characteristics:
(1) the grinding and milling modes are different: the common milling cone can only mill downwards, and the work is in a passive state when the drill is stopped. The drill post type bidirectional milling cone can mill downwards and upwards, and the problem of complex processing of blocking during the drilling process of the milling cone is effectively solved.
(2) The connection modes are different: the lower end of a common milling cone has no tool, and in the milling process, as the bit pressure is applied during milling, the milling cone is shifted transversely, and a casing is easy to be milled or a new well hole is easy to be milled. The lower end of the drill column type bidirectional milling cone can be connected with drilling tools such as drill collars and the like, the weight of the drilling tools can ensure that the milling cone is relatively centered in a casing, and the casing is effectively prevented from being damaged due to the fact that the milling cone is not centered in grinding and milling.
The present exemplary embodiment 2 provides a drill string type bidirectional milling cone combination drill.
The drill string type bidirectional milling-cone combined drilling tool can comprise the drill string type bidirectional milling cone in the exemplary embodiment 1 and a drill collar. Wherein, one end of the drill collar is connected with the lower joint of the drill column type bidirectional milling cone. The drill collar is connected to the lower end of the drill column type bidirectional milling cone, the weight of the drill collar can ensure that the milling cone is relatively centered on the casing, and the accident that the casing is damaged in milling due to the fact that the milling cone is not centered is effectively prevented.
In this embodiment, the other end of the drill collar may be connected to a milled tooth joint.
Exemplary embodiment 3
The present exemplary embodiment 3 provides a drill string type bidirectional milling cone combination drill.
On the basis of the example embodiment 2, the drill string type bidirectional milling cone combination drilling tool of the example embodiment further comprises another drill collar, and the drill collar can be connected with an upper joint of the drill string type bidirectional milling cone.
In this embodiment, the combined drilling tool may further include a drill rod, and the drill rod is connected to the other drill collar, that is, the drill rod, the other drill collar, and the upper joint are sequentially connected.
The drill column type bidirectional milling cone combined drilling tool can increase the rigidity of the drilling tool, and can ensure that the milling cone is tightly attached to the broken or deformed part of the casing pipe at the place with large dog legs, thereby effectively improving the milling efficiency and obtaining good effect on the aspect of casing pipe trimming. In the reaming process, because the lower part of the milling cone is connected with the drill collar and the gear milling joint (the outer diameter is smaller than that of the milling cone, and the part below the lower joint is always positioned on the central line of the well hole), a new well hole can be prevented from being reamed in the downward milling process; if when meeting hindering in carrying, by the cone has the back stroke function on the milling cone, can repair the wall of a well better, avoid ordinary drill bit back stroke hole risk of being blocked, improve back stroke hole efficiency simultaneously.
In order to better understand the above exemplary embodiments of the present invention, the effects thereof will be further explained with reference to specific examples.
A well is damaged by 177.8mm casing, and the lower 146.0mm female cone does not pass through to the well depth of 3494.59 m. When the D146.0mm drill column type bidirectional milling cone is used until the well depth is 3505.60m, the milling well section is 3495.01-3505.60 m; after the drill is taken out, the lower 146.0mm female cone smoothly passes through the drill, and the expected effect is achieved.
In summary, the advantages proposed by the present invention may include at least one of the following with respect to the prior art:
(1) the utility model can effectively solve the problem that the common milling cone is stuck during the drill-out after the milling cone is milled downwards;
(2) the drill column type bidirectional milling cone can be connected with the drill collar at the lower part in the downward milling process, the weight of the drill collar ensures that the milling cone is relatively centered on a casing, and the possibility of damaging the casing in the milling process due to the fact that a common milling cone is not centered is effectively prevented;
(3) the drill post type bidirectional milling cone is also suitable for an open hole well section, particularly for a reducing well section, and can be used for milling a through hole and preventing a new well hole from being drawn out when a common drill bit is used for enlarging the through hole.
Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (11)
1. A drill post type bidirectional milling cone is characterized in that the bidirectional milling cone comprises an upper joint, a milling cone body and a lower joint which are sequentially connected, wherein,
the upper joint is provided with a first cavity which is axially communicated;
the milling cone body is provided with a second cavity which is axially communicated and comprises an upper cone, a cylinder and a lower cone which are sequentially connected, the upper cone is connected with the upper joint, the radial size of the upper cone is gradually increased along a first direction, the underground size of the lower cone is gradually reduced, and the first direction is the direction from the upper joint to the lower joint;
the lower vertebral body is provided with a third cavity which is axially communicated, and the first cavity, the second cavity and the third cavity are communicated;
the outer surfaces of the upper vertebral body, the column body and the lower vertebral body are all provided with hard alloy.
2. The drill string type bi-directional milling cone according to claim 1, wherein an angle between the conical surface of the upper cone and a central axis thereof is less than 10 degrees.
3. The drill string type bi-directional milling cone according to claim 1, wherein an angle between the conical surface of the lower cone and a central axis thereof is less than 10 degrees.
4. The drill post type bidirectional milling cone as recited in claim 1, wherein a plurality of water channels are formed on the surface of the milling cone body.
5. The drill string bi-directional milling cone of claim 4, wherein the plurality of water channels are evenly distributed on the surface of the milling cone body.
6. The drill post type bidirectional milling cone as claimed in claim 4, wherein the number of the water grooves is 3-8.
7. The drill string bi-directional milling cone of claim 1, wherein the upper sub, milling cone body, and lower sub are concentric.
8. The drill string bi-directional milling cone of claim 1, wherein the radial dimensions of the second and third cavities are the same.
9. A drill string type bidirectional milling cone combination drilling tool, which is characterized by comprising a first drill collar and the drill string type bidirectional milling cone according to any one of claims 1 to 8, wherein one end of the first drill collar is connected with the lower joint.
10. The drill string type bi-directional milling and drilling combined drill tool as recited in claim 9, wherein the other end of the drill collar is connected with a milling tooth joint.
11. The drill string type bi-directional milling cone combined drilling tool as recited in claim 9, further comprising a second drill collar and a drill pipe connected, the second drill collar further connected with the upper joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122371297.0U CN216691024U (en) | 2021-09-28 | 2021-09-28 | Drill-post type bidirectional milling cone and drill-post type bidirectional milling cone combined drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122371297.0U CN216691024U (en) | 2021-09-28 | 2021-09-28 | Drill-post type bidirectional milling cone and drill-post type bidirectional milling cone combined drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216691024U true CN216691024U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122371297.0U Active CN216691024U (en) | 2021-09-28 | 2021-09-28 | Drill-post type bidirectional milling cone and drill-post type bidirectional milling cone combined drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216691024U (en) |
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2021
- 2021-09-28 CN CN202122371297.0U patent/CN216691024U/en active Active
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