CN201241620Y - Rotary type fin guide head - Google Patents
Rotary type fin guide head Download PDFInfo
- Publication number
- CN201241620Y CN201241620Y CNU2008201095719U CN200820109571U CN201241620Y CN 201241620 Y CN201241620 Y CN 201241620Y CN U2008201095719 U CNU2008201095719 U CN U2008201095719U CN 200820109571 U CN200820109571 U CN 200820109571U CN 201241620 Y CN201241620 Y CN 201241620Y
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- guide
- rotary
- head
- fin
- guide head
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Abstract
Disclosed is a rotary vane guide head, which aims to overcome the defect that the existing guide heads of strings of well completion down-hole tools in horizontal wells can not rotate, the strings are difficult to enter the barefoot interval of the horizontal wells when being blocked. A cylinder of the rotary guide head (1) is equipped with spiral vanes (8), the front end of a guide shaft (2) is disposed in an inner hole of the rotary guide head (1), the rear end of the guide shaft (2) is equipped with connecting threads, the outer circle of the guide shaft (2) is in clearance fit with the inner hole of the rotary guide head (1), the surface of the outer circle of the guide shaft (2) is equipped with a ring-shaped groove (9), a steel ball (6) disposed in the ring-shaped groove (9) is mounted on the rotary guide head (1) corresponding to the ring-shaped groove on the guide shaft (2), and a gland (4) is in axially and radially clearance fit with the rotary guide head (1) and is fixedly connected with the guide shaft (2). The rotary vane guide head has the advantages that when the string is blocked during descending, the guide head rotates to reduce the descent resistance of the tube column, thereby increasing success rate of running string in one step.
Description
Affiliated technical field
The utility model relates to directional well in a kind of petroleum exploration and development, sidetracked hole down-hole construction operation guide head, particularly relates to a kind of rotary fin guide head.
Background technology
Along with the continuous development of drilling technology, directed drilling, sidetracked hole technology are used widely.When the horizontal well completion operation, the downhole tool tubing string is except passing through the flex socket of angle buildup interval, when entering horizontal bare hole well Duan Shihui, instrument runs into very big frictional resistance, having accumulated in reservoir sand in the well and rock fragment will make tubing string be lowered to resistance further to increase, when resistance is excessive, tubing string is lowered to operation and will be forced to stop, usually tubing string need be risen out and carry out the drifting operation, perhaps shorten completion length, finish construction operation in advance, bring unnecessary loss for the horizontal well oil and gas development.
Fashionable under the downhole tool tubing string, the tubing string front end is equipped with guide head.Usually guide head is cone or cylinder, and front top is the hemisphere rounding off, and is non-rotatable, if therefore fashionablely under the tubing string be hampered, only depend on the thrust on top be difficult to by, finish tubing string and be lowered to production plan and need increase operations such as drifting, cost of production is increased.
The utility model content
For the guide head that overcomes tool tubular column under the existing level well completion interval of well does not rotate, tubing string is lowered to the deficiency that is difficult to enter the horizontal well barefoot interval when being hampered, and the utility model provides a kind of rotary fin guide head.
The technical scheme that its technical problem that solves the utility model adopts is: the front end of rotary steering head is that hemisphere, rear end are cylinder, on the cylinder of rotary steering head spiral fin is arranged; Axis of guide front end is arranged in rotary steering head endoporus, and axis of guide rearward end is a connecting thread; Axis of guide cylindrical and rotary steering head endoporus are matched in clearance; Axis of guide outer round surface has cannelure; With on the rotary steering head of cannelure correspondence position on the axis of guide steel ball is installed and is positioned at cannelure; The position, rear end of rotary steering head is pre-large post-small cascaded surface, and gland has and the corresponding ladder endoporus of the rearward end of rotary steering head, and gland and rotary steering head axially, radially are matched in clearance, and gland is fixedlyed connected with the axis of guide; Steel ball is installed in the radial direction through hole on the rotary steering head, and the outer end of radial direction through hole is installed with the top bolt.
The beneficial effects of the utility model are, rational in infrastructure, processing and manufacturing is simple, is convenient to assembling, good sealing effect, steel ball is not easy to damage, and the tubing string that rotary fin guide head is installed is gone into the well when being hampered, and is lowered at tubing string under the effect of pressure, guide head can rotate, can effectively remove the foreign material in the pit shaft, reduce tubing string and be lowered to resistance, improve one time the running string success rate.
Description of drawings
Fig. 1 is the rotary fin guide head of a utility model structural representation.
Fig. 2 is the C-C sectional drawing of Fig. 1.
Fig. 3 is the D-D sectional drawing of Fig. 1.
Among the figure: 1. rotary steering head, the 2. axis of guide, 3. jackscrew, 4. gland, 5. top bolt, 6. steel ball, 7. sealing ring, 8. spiral fin, 9. cannelure.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing 1～accompanying drawing 3 and embodiment.
The rotary fin guide head of the utility model mainly comprises rotary steering head 1, the axis of guide 2, gland 4, and rotary steering head 1 front end is a hemisphere, and rearward end is a cylinder.Spiral fin 8 is arranged, the spiral fin 8 similar down-holes helical wing plate of centralizer on the cylinder of rotary steering head 1; The axis of guide 2 front ends are arranged in rotary steering head 1 endoporus, and the axis of guide 2 rearward end are connecting thread, are used for being connected with the top tubing string; The axis of guide 2 cylindricals and rotary steering head 1 endoporus are matched in clearance.The axis of guide 2 outer round surface have cannelure 9, and cannelure 9 bottoms can be circular arc; The quantity of cannelure 9 is at least 2.With on the rotary steering head 1 of cannelure 9 correspondence positions on the axis of guide 2 steel ball 6 is installed and is positioned at cannelure 9.Steel ball 6 is installed in the radial direction through hole on the rotary steering head 1, and the outer end of radial direction through hole is installed with top bolt 5 (see figure 3)s; Steel ball 6 can also be installed in the radial direction through hole of spiral fin 8 on the rotary steering head 1, and the outer end of radial direction through hole is installed with top bolt 5 (see figure 2)s on the spiral fin 8.For the ease of adjusting the radial position of steel ball 6 in through hole, top bolt 5 can be threaded with radial direction through hole and adjust, when suitable size is adjusted in the gap, can adopt welding procedure that top bolt 5 is fixed on the rotary steering head 1, avoid the position of steel ball 6 in the rotary fin guide head lower going-into-well to change.
The rearward end of rotary steering head 1 is pre-large post-small cascaded surface, and gland 4 has and the corresponding ladder endoporus of the rearward end of rotary steering head 1, and gland 4 axially, radially all has slight clearance with rotary steering head 1, is matched in clearance, and gland 4 is fixedlyed connected with the axis of guide 2.Usually gland 4 adopts with the axis of guide 2 and is threaded, and is convenient to the adjustment of end play between gland 4 and the rotary steering head 1, and is after the gap adjustment is suitable, by the radial direction top thread 3 on the gland 4 that gland 4 is fixing with the axis of guide 2 again.
In the tubing string lower going-into-well, the spiral fin 8 on the rotary steering head 1 is pre-small post-large taper axially.The quantity of spiral fin 8 is more than 2 or 2, and the quantity of spiral fin 8 is 3～5 the bests, and along rotary steering head 1 circumference uniform distribution.
The axis of guide 2 and the rotary steering head 1 of the rotary fin guide head of the utility model radially are equipped with sealing ring 7, can prevent effectively that down-hole liquid and foreign matter from entering in the gap between the axis of guide 2 and the rotary steering head 1, the phenomenon of avoiding damages such as steel ball 6 and cannelure 9 to cause that rotary steering head 1 can not rotate occurs.
The rotary fin guide head of the utility model is rational in infrastructure, processing and manufacturing is simple, is convenient to assembling, good sealing effect, steel ball is not easy to damage, except that function, increased the rotation that is hampered and dialled the thing function, in the construction of horizontal well sieve tube completion with common guide head, when being lowered to tubing string and being hampered, the rotary steering head can rotate, and rock chip and loose material that the helical form fin in the rotation will hinder in the tubing string lower going-into-well are pushed aside, improves tubing string and is lowered to ability.
The rotary fin guide head of the utility model is not only applicable to the horizontal well completion operation, is applicable to that the tubing string of other well type is lowered to operation yet.
Claims (9)
1. rotary fin guide head, cylindrical guide head front end is a hemisphere, it is characterized in that: spiral fin (8) is arranged on the cylinder of rotary steering head (1); The front end of the axis of guide (2) is arranged in rotary steering head (1) endoporus, and the axis of guide (2) rearward end is a connecting thread; The axis of guide (2) cylindrical and rotary steering head (1) endoporus are matched in clearance; The axis of guide (2) outer round surface has cannelure (9); Go up with the axis of guide (2) and on the rotary steering head (1) of cannelure (9) correspondence position steel ball (6) to be installed and to be positioned at cannelure (9); The position, rear end of rotary steering head (1) is pre-large post-small cascaded surface, gland (4) has and the corresponding ladder endoporus of rotary steering head (1) rearward end, gland (4) axially, radially is matched in clearance with rotary steering head (1), and gland (4) is fixedlyed connected with the axis of guide (2).
2. rotary fin guide head according to claim 1 is characterized in that: described steel ball (6) is installed in the radial direction through hole on the rotary steering head (1), and the outer end of radial direction through hole is installed with top bolt (5).
3. rotary fin guide head according to claim 1 is characterized in that: described steel ball (6) is installed in rotary steering head (1) and goes up in the radial direction through hole of spiral fin (8), and the outer end that spiral fin (8) is gone up radial direction through hole is installed with top bolt (5).
4. according to claim 2 or 3 described rotary fin guide heads, it is characterized in that: the bottom of described cannelure (9) is a circular arc, and the quantity of cannelure (9) is at least 2.
5. rotary fin guide head according to claim 4 is characterized in that: described spiral fin (8) axially is pre-small post-large taper.
6. rotary fin guide head according to claim 5 is characterized in that: the described axis of guide (2) radially is equipped with sealing ring (7) with rotary steering head (1).
7. rotary fin guide head according to claim 6 is characterized in that: described gland (4) is threaded with the axis of guide (2), and gland (4) radially is equipped with jackscrew (3).
8, rotary fin guide head according to claim 7, it is characterized in that: the quantity of described spiral fin (8) is more than 2 or 2, and along rotary steering head (1) circumference uniform distribution.
9, rotary fin guide head according to claim 8, it is characterized in that: the quantity of described spiral fin (8) is 3～5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201095719U CN201241620Y (en) | 2008-07-31 | 2008-07-31 | Rotary type fin guide head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201095719U CN201241620Y (en) | 2008-07-31 | 2008-07-31 | Rotary type fin guide head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241620Y true CN201241620Y (en) | 2009-05-20 |
Family
ID=40714916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201095719U Expired - Fee Related CN201241620Y (en) | 2008-07-31 | 2008-07-31 | Rotary type fin guide head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201241620Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454381A (en) * | 2010-10-22 | 2012-05-16 | 中国石油化工股份有限公司 | Oil-gas reservoir barefoot well cementing and completion method and device |
| CN107587850A (en) * | 2017-10-16 | 2018-01-16 | 天津盛鑫华瑞石油技术有限公司 | Completion guide shoe |
-
2008
- 2008-07-31 CN CNU2008201095719U patent/CN201241620Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454381A (en) * | 2010-10-22 | 2012-05-16 | 中国石油化工股份有限公司 | Oil-gas reservoir barefoot well cementing and completion method and device |
| CN102454381B (en) * | 2010-10-22 | 2014-09-17 | 中国石油化工股份有限公司 | Oil-gas reservoir barefoot well cementing and completion method and device |
| CN107587850A (en) * | 2017-10-16 | 2018-01-16 | 天津盛鑫华瑞石油技术有限公司 | Completion guide shoe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |