CN203640634U - Flow drainage rotating guiding shoe - Google Patents
Flow drainage rotating guiding shoe Download PDFInfo
- Publication number
- CN203640634U CN203640634U CN201320720874.5U CN201320720874U CN203640634U CN 203640634 U CN203640634 U CN 203640634U CN 201320720874 U CN201320720874 U CN 201320720874U CN 203640634 U CN203640634 U CN 203640634U
- Authority
- CN
- China
- Prior art keywords
- rotating seat
- ball grooves
- ball groove
- leading end
- rotating
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of cementing tools for oil development, and particularly provides a flow drainage rotating guiding shoe. The rotating guiding shoe comprises a rotating seat and a guide end which is arranged at the lower end of the rotating seat, wherein the guide end adopts a hollow structure; a plurality of blades which are inclined from the upper part to the lower part are arranged on the outer surface of the guide end; a flow drainage hole leading to the interior of the guide end is formed between each two adjacent blades; a first ball groove is formed in the inner side wall of the lower end of the rotating seat; a second ball groove matched with the first ball groove is formed in the outer side wall of the upper end of the guide end; a mounting hole leading to the first ball groove and the second ball groove and used for mounting balls is formed in the surface of the rotating seat; a plurality of balls are contained in the first ball groove and the second ball groove; an end cap is mounted in the mounting hole; a sealing ring is also arranged between the rotating seat and the guide end; the sealing ring is positioned below the first ball groove and the second ball groove. The rotating guiding shoe has rotating, guiding and flow drainage functions, and is applicable to special wells with long horizontal sections, formation collapse and severe hole shrinkage.
Description
Technical field
The utility model belongs to oil development cementing tool technical field, is specifically related to a kind of earial drainage rotation guide shoe.
Background technology
Prior art does not have rotary structure for the casing string front end of well cementing operation, and the external diameter of casing string is the same with the external diameter of sleeve pipe, its shortcoming is can not reduce in sleeve pipe decentralization process to produce resistance with the borehole wall, circulating fluid can not play the effect of washing away the borehole wall, and then affect the lowering velocity of sleeve pipe, affect cementing quality.
Utility model content
The purpose of this utility model is to overcome prior art deficiency, unloads discharge orifice by increasing rotational structure and tube wall, makes this guide shoe have rotation, guiding function, is applicable to that horizontal segment is long, formation collapse and the more serious exceptional well use of undergauge.
For this reason, the utility model provides a kind of earial drainage rotation guide shoe, comprises rotating seat and the leading end that is arranged on rotating seat lower end, and described leading end is hollow structure, its external surface is provided with multiple blades of the trend that from up to down tilts, and is provided with the discharge orifice that unloads towards leading end inside between adjacent blade; The inside wall of described rotating seat lower end is provided with the first ball grooves, the lateral wall of leading end upper end is provided with the second ball grooves matching with the first ball grooves, rotating seat surface has leads to the pilot hole that the assembling ball of the first ball grooves and the second ball grooves is used, the first ball grooves and the second ball grooves contain multiple balls, and plug is installed on pilot hole; Between rotating seat and leading end, be also provided with sealing ring, sealing ring is positioned at the lower position of the first ball grooves and the second ball grooves.
The beneficial effects of the utility model: this rotation guide shoe that the utility model provides, comprise rotating seat and the leading end that is arranged on rotating seat lower end, described leading end is hollow structure, its external surface is provided with multiple blades of the trend that from up to down tilts, and is provided with the discharge orifice that unloads towards leading end inside between adjacent blade; The inside wall of described rotating seat lower end is provided with the first ball grooves, the lateral wall of leading end upper end is provided with the second ball grooves matching with the first ball grooves, rotating seat surface has leads to the pilot hole that the assembling ball of the first ball grooves and the second ball grooves is used, the first ball grooves and the second ball grooves contain multiple balls, and plug is installed on pilot hole; Between rotating seat and leading end, be also provided with sealing ring, sealing ring is positioned at the lower position of the first ball grooves and the second ball grooves.The utility model, by increasing rotational structure to traditional guide shoe and tube wall unloads discharge orifice, makes this guide shoe have rotation, guiding function, is applicable to that horizontal segment is long, formation collapse and the more serious exceptional well use of undergauge.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further details:
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is leading end schematic diagram;
Fig. 3 is leading end top view;
Fig. 4 is leading end sectional drawing;
Fig. 5 is rotating seat schematic diagram.
Description of reference numerals: 1, rotating seat; 2, leading end; 3, ball; 4, sealing ring; 5, pilot hole; 6, plug; 7, the first ball grooves; 8, the second ball grooves; 9, blade; 10, unload discharge orifice.
The specific embodiment
Embodiment 1:
A kind of earial drainage rotation guide shoe shown in Fig. 3, Fig. 4 and Fig. 5 as shown in Figure 1, Figure 2,, comprise rotating seat 1 and the leading end 2 that is arranged on rotating seat 1 lower end, described leading end 2 is hollow structure, its external surface is provided with from up to down multiple blades 9 of trend, is provided with to unload discharge orifice 10 towards leading end 2 inside between adjacent blade 9; The inside wall of described rotating seat 1 lower end is provided with the first ball grooves 7, the lateral wall of leading end 2 upper ends is provided with the second ball grooves 8 matching with the first ball grooves 7, rotating seat 1 surface has leads to the pilot hole 5 that the assembling ball of the first ball grooves 7 and the second ball grooves 8 is used, the first ball grooves 7 and the second ball grooves 8 contain multiple balls 3, and plug 6 is installed on pilot hole; Between rotating seat 1 and leading end 2, be also provided with sealing ring 4, sealing ring 4 is positioned at the lower position of the first ball grooves 4 and the second ball grooves 8.Operating principle of the present utility model is: in the decentralization process of sleeve pipe, rotation guide shoe itself has spinfunction, and passive rotation is hampered in the time not having drilling fluid to enter; In the time running into larger resistance, by turn on pump pressurized circulation, drilling fluid flows into rotation guide shoe inside by rotating seat endoporus, and liquid flows out at a high speed by the discharge orifice that unloads of rotary sleeve guide shoe head end, has the borehole wall of flushing function, effectively improves cementing quality.Therefore, the utility model, by increasing rotational structure to traditional guide shoe and tube wall unloads discharge orifice, makes this guide shoe have rotation, guiding function, is applicable to that horizontal segment is long, formation collapse and the more serious exceptional well use of undergauge.
More than exemplifying is only to illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, within the every and same or analogous design of the utility model all belongs to protection scope of the present invention.
Claims (1)
1. an earial drainage rotation guide shoe, comprise rotating seat (1) and be arranged on the leading end (2) of rotating seat (1) lower end, it is characterized in that: described leading end (2) is hollow structure, its external surface is provided with from up to down multiple blades (9) of trend, between adjacent blade (9), be provided with towards leading end (2) inner unload discharge orifice (10); The inside wall of described rotating seat (1) lower end is provided with the first ball grooves (7), the lateral wall of leading end (2) upper end is provided with the second ball grooves (8) matching with the first ball grooves (7), rotating seat (1) surface has leads to the pilot hole (5) that the assembling ball of the first ball grooves (7) and the second ball grooves (8) is used, the first ball grooves (7) and the second ball grooves (8) contain multiple balls (3), and plug (6) is installed on pilot hole; Between rotating seat (1) and leading end (2), be also provided with sealing ring (4), sealing ring (4) is positioned at the lower position of the first ball grooves (7) and the second ball grooves (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720874.5U CN203640634U (en) | 2013-11-15 | 2013-11-15 | Flow drainage rotating guiding shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720874.5U CN203640634U (en) | 2013-11-15 | 2013-11-15 | Flow drainage rotating guiding shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203640634U true CN203640634U (en) | 2014-06-11 |
Family
ID=50871889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320720874.5U Expired - Lifetime CN203640634U (en) | 2013-11-15 | 2013-11-15 | Flow drainage rotating guiding shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203640634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590757A (en) * | 2013-11-15 | 2014-02-19 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Drainage rotary guide shoe |
-
2013
- 2013-11-15 CN CN201320720874.5U patent/CN203640634U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590757A (en) * | 2013-11-15 | 2014-02-19 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Drainage rotary guide shoe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |