CN203035143U - Tie-back tube mill shoe with good guidance quality - Google Patents
Tie-back tube mill shoe with good guidance quality Download PDFInfo
- Publication number
- CN203035143U CN203035143U CN 201320056908 CN201320056908U CN203035143U CN 203035143 U CN203035143 U CN 203035143U CN 201320056908 CN201320056908 CN 201320056908 CN 201320056908 U CN201320056908 U CN 201320056908U CN 203035143 U CN203035143 U CN 203035143U
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- cavity
- milling
- guidance quality
- milling cutter
- good
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Abstract
The utility model discloses a tie-back tube mill shoe with good guidance quality. The tie-back tube mill shoe with the good guidance quality comprises a body (8). A milling cutter head portion (9) is arranged at the lower end of the body (8). The lower end face of the milling cutter head portion (9) forms a cone-shaped transition cutter head (10). A plurality of milling cutters (6) which are placed vertically are arranged on the circular surface of the milling cutter head portion (9). A cavity is formed in the inner portion of the body (8). A locating ring (4) is arranged in the cavity. The cavity is divided into a guide cavity (2) and a water injection cavity (5) through the locating ring (4), wherein the guide cavity (2) is in the upper portion of the cavity and the water injection cavity (5) is in the lower portion of the cavity. The guide cavity (2) and the water injection cavity (5) are mutually communicated. A water outlet (7) is formed in the side wall of the water injection cavity (5). A guide groove (3) is formed in the side wall of the guide cavity (2). Taper threads (1) are arranged at the uppermost end of the guide cavity (2). The tie-back tube mill shoe with the good guidance quality is not only good in guidance quality, stable in structure, but also long in service life.
Description
Technical field
The utility model relates to a kind of oil drilling machine accessory, specifically is the good tieback tube milling shoe of a kind of guidance quality, belongs to the petroleum machinery field.
Background technology
The tieback tube is the special cementing tool that is connected on the tail pipe top, and the tieback tube is exactly can be with tie back liner to well head.Such as the drilling liner cementing failure, the stratum has gone out salt solution, new sleeve pipe can be inserted the tieback tube so, realizes tieback.The tieback tube is because it needs good sealing, so the tieback tube inwall after using need guarantee good fineness, to guarantee tieback tube sealing, so, tieback tube after the use all can clean again by milling shoe, milling shoe is used for the cement impurity on the cleaning tieback tube inwall, so that the tieback plug inserts smoothly, and forms effectively sealing.Present milling shoe can make the guidance quality variation of milling shoe and driving member because of connecting portion after use for a long time, thereby make milling shoe when cleaning tieback tube inwall, accident occur, not only can destroy planeness and fineness that milling shoe also can destroy tieback tube inwall, cause waste, cost increases.
The utility model content
Problem to be solved in the utility model provides the good tieback tube milling shoe of a kind of guidance quality, has solved poor, the flimsy problem of milling shoe guidance quality in the past.
The technical scheme that the utility model provides is: the tieback tube milling shoe that guidance quality is good, comprise body, the body lower end is the milling cutter head, milling head subordinate end face forms the transition milling head of taper, described milling cutter head periphery is provided with several milling cutters of vertically placing, described body interior is provided with cavity, be provided with locating ring in the cavity, described cavity is divided into the directed cavity on top and the water-injecting cavity of bottom by locating ring, directed cavity and water-injecting cavity communicate with each other, described water-injecting cavity sidewall is provided with weep hole, and described directed cavity sidewall is provided with gathering sill, and described directed cavity also is provided with taper thread topmost.Milling shoe can connect guide peg when connecting, and guide peg inserts in the directed cavity, and the guide peg front end is provided with the convex feather key with the gathering sill coupling, has not only played guide effect, has also strengthened the bonding strength of total; Weep hole inside links to each other with water-injecting cavity, and the water in the water-injecting cavity flows into tieback tube inwall by weep hole, and it is wet that the cement of tieback tube inwall and other impurity are oozed, and reduces impurity intensity, makes things convenient for milling cutter to clean, thereby protected cutter when raising the efficiency.
Described gathering sill is provided with four altogether, evenly distributes along periphery each other.The even distribution of gathering sill arranges four and not only can strengthen guide effect, and the feather key stress equalization, reduces the pressure that each several part feather key and gathering sill are subjected to, and has also protected structure when improving guidance quality.
Described milling cutter is provided with eight altogether.Eight milling cutters are set under the situation of using minimum milling cutter, realize the highest operating efficiency, not only saved material, also can guarantee work quality simultaneously.
The described gathering sill degree of depth is not less than 5 centimetres.Gathering sill is the guide effect that reaches best, and its degree of depth is too small then can not to reach comparatively ideal guide effect, so the gathering sill degree of depth should be not less than 5 centimetres, strengthens guide effect.
Described weep hole is tilted to down setting, and its outlet port is positioned at transition milling head surface.The downward-sloping water of being convenient to of weep hole can flow downward along tieback tube inwall, when milling cutter when washing impurity, the impurity of milling cutter lower end is drenched by water, milling cutter can be worked continuously, improved efficient, thereby avoided the impurity such as cement in the tieback tube to enter the obstruction that water-injecting cavity causes by weep hole simultaneously, influence is used, and the water in the water-injecting cavity can also reduce the heat of milling cutter, guarantees the milling cutter low temp operation.
Described milling cutter adopts the gas welding of alloy steel milling cutter at milling cutter head periphery.The alloy steel milling cutter has high strength, high tenacity, wear-resisting and corrosion resistant characteristic, can prolong the application life of milling shoe greatly, adopts the gas welding mode to weld simultaneously and makes milling cutter and milling shoe be connected firmly Stability Analysis of Structures.
Advantage of the present utility model is: the good tieback tube milling shoe of this guidance quality of the utility model design, not only guidance quality is good, Stability Analysis of Structures and long service life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Label among the figure is expressed as respectively: 1, taper thread; 2, directed cavity; 3, gathering sill; 4, locating ring; 5, water-injecting cavity; 6, milling cutter; 7, weep hole; 8, body; 9, milling cutter head; 10, transition milling head.
The specific embodiment
Embodiment
Referring to Fig. 1, the tieback tube milling shoe that guidance quality is good, comprise body 8, body 8 lower ends are milling cutter heads 9, milling cutter head 9 lower surfaces form the transition milling head 10 of taper, described milling cutter head 9 peripheries are provided with several milling cutters of vertically placing 6, described body 8 inside are provided with cavity, be provided with locating ring 4 in the cavity, described cavity is divided into the directed cavity 2 on top and the water-injecting cavity 5 of bottom by locating ring 4, and directed cavity 2 and water-injecting cavity 5 communicate with each other, and described water-injecting cavity 5 sidewalls are provided with weep hole 7, described directed cavity 2 sidewalls are provided with gathering sill 3, and described directed cavity 2 also is provided with taper thread 1 topmost.
Described gathering sill 3 is provided with four altogether, evenly distributes along periphery each other.
Described milling cutter 6 is provided with eight altogether.
Described gathering sill 3 degree of depth are not less than 5 centimetres.
Described weep hole 7 is tilted to down setting, and its outlet port is positioned at transition milling head 10 surfaces.
Described milling cutter 6 adopts the gas welding of alloy steel milling cutter at milling cutter head 9 peripheries.
In use; be inserted with guide peg in the directed cavity 2; locating by locating ring 4 bottom of guide peg; the guide peg periphery is provided with the convex key with gathering sill 3 couplings; the guide peg middle part is provided with through hole and goes into water-injecting cavity for water flowing; milling shoe is connected by joint outer part and taper thread 1; guide peg passes joint outer part and fixedlys connected with connector; when milling shoe cleans in rotation; guide peg moves with milling shoe; milling shoe has played good guide effect by the structure of gathering sill 3; and guidance quality can keep lastingly; avoid between milling shoe and the connector occurring tilting and causing milling shoe or tieback tube inwall to destroy, fabulous protection cutter and tieback tube, practicality improves greatly.
Can well realize the utility model as mentioned above.
Claims (6)
1. the tieback tube milling shoe that guidance quality is good, comprise body (8), body (8) lower end is milling cutter head (9), milling cutter head (9) lower surface forms the transition milling head (10) of taper, described milling cutter head (9) periphery is provided with several milling cutters of vertically placing (6), it is characterized in that: described body (8) inside is provided with cavity, be provided with locating ring (4) in the cavity, described cavity is divided into the directed cavity (2) on top and the water-injecting cavity (5) of bottom by locating ring (4), directed cavity (2) and water-injecting cavity (5) communicate with each other, described water-injecting cavity (5) sidewall is provided with weep hole (7), described directed cavity (2) sidewall is provided with gathering sill (3), and described directed cavity (2) also is provided with taper thread (1) topmost.
2. the tieback tube milling shoe that guidance quality according to claim 1 is good is characterized in that: described gathering sill (3) is provided with four altogether, evenly distributes along periphery each other.
3. the tieback tube milling shoe that guidance quality according to claim 1 is good is characterized in that: described milling cutter (6) is provided with eight altogether.
4. the tieback tube milling shoe that guidance quality according to claim 1 is good is characterized in that: described gathering sill (3) degree of depth is not less than 5 centimetres.
5. the tieback tube milling shoe that guidance quality according to claim 1 is good is characterized in that: described weep hole (7) is tilted to down setting, and its outlet port is positioned at transition milling head (10) surface.
6. according to claim 1 or the good tieback tube milling shoe of 3 described guidance quality, it is characterized in that: described milling cutter (6) adopts the gas welding of alloy steel milling cutter at milling cutter head (9) periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320056908 CN203035143U (en) | 2013-02-01 | 2013-02-01 | Tie-back tube mill shoe with good guidance quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320056908 CN203035143U (en) | 2013-02-01 | 2013-02-01 | Tie-back tube mill shoe with good guidance quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035143U true CN203035143U (en) | 2013-07-03 |
Family
ID=48687276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320056908 Expired - Fee Related CN203035143U (en) | 2013-02-01 | 2013-02-01 | Tie-back tube mill shoe with good guidance quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035143U (en) |
-
2013
- 2013-02-01 CN CN 201320056908 patent/CN203035143U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20140201 |