CN2386181Y - Nozzle for oil drilling bit - Google Patents
Nozzle for oil drilling bit Download PDFInfo
- Publication number
- CN2386181Y CN2386181Y CN 99237183 CN99237183U CN2386181Y CN 2386181 Y CN2386181 Y CN 2386181Y CN 99237183 CN99237183 CN 99237183 CN 99237183 U CN99237183 U CN 99237183U CN 2386181 Y CN2386181 Y CN 2386181Y
- Authority
- CN
- China
- Prior art keywords
- nozzle
- section
- outlet section
- interlude
- nozzle according
- 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
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Abstract
The utility model provides a nozzle for drilling, particularly for oil drilling wells. The inner hole part of the nozzle comprises a streamline inlet section (1), a middle section (2) and an outlet section (3), wherein, the middle section (2) is intersected with a shaft line of the outlet section (3) to form an outlet offset angle (4), and the upper part (5) of the outer surface of the nozzle is in parallel or superposed with a central line of the lower part (6) of the outer surface of the nozzle. The nozzle can improve the cleaning capability and the auxiliary rock breaking capability of the jet flow to the well bottom, can improve the mechanical drilling speed, can reduce the well drilling cost, and can avoid accidents such as tooth break, tooth loss, etc., which occur because an oblique nozzle is stressed and steered in the underground to result in the erosion of a cone casing from occurring.
Description
The utility model relates to the nozzle that uses in a kind of the probing usefulness, particularly oil drilling.
Nozzle in the drilling well is to be used for improving cleansing power and the auxiliary drill bit fractured rock of jet to the shaft bottom landwaste.At present, the nozzle that oil drilling uses mainly is a plain nozzle, in, extended jet nozzle and oblique nozzle, outlet is circular cross-section.Except that oblique nozzle, its jet all vertically acts on the shaft bottom, rock there is certain percussion, also the shaft bottom landwaste is produced chip hold down simultaneously, the jet action of coming out from nozzle circular section outlet is little in the area in shaft bottom in addition, and abundant bottom-hole cleaning is caused the shaft bottom landwaste to return on can not be in time and is detained the shaft bottom, drill bit repeats fractured rock, thereby has reduced bit speed.This situation is very general in big hole diameter drilling well.In order to address the above problem, way is to improve bit speed, but drilling cost is improved greatly by increase mud pump delivery, pump pressure usually.Adopt oblique nozzle can reduce the chip hold down that jet produces the shaft bottom landwaste, but since tiltedly nozzle outer surface between two parts an inclination angle is arranged up and down, make that oblique nozzle is stressed in the down-hole easily to turn to and the erosion gear wheel.
The purpose of this utility model is at the problems referred to above, provides a kind of and do not turn under stress, can avoid the nozzle that is used for oil bit of cone shell erosion.
The utility model is achieved by following technical proposals: a kind of nozzle that is used for oil bit, bore portion comprises streamlined entrance [1], interlude [2] in the nozzle, outlet section [3], the axes intersect of interlude [2] and outlet section [3], form exit bias [4], the external surface of nozzle is made up of nozzle outer surface top [5] and nozzle outer surface bottom [6], and the center line of nozzle outer surface top [5] and nozzle outer surface bottom [6] parallels or overlaps.The utility model can also be achieved by following technical proposals: the interlude of nozzle [2] can be conical section, cylindrical section, streamlined section, exit bias [4] is 0 °～25 °, nozzle adopts compacting and vacuum-sintering to form, the cross sectional shape of outlet section [3] can be the shapes such as trapezoidal, oval, segmentation circular arc of rectangle, the transition of band arc chord angle of circular, band arc chord angle transition, nozzle outer surface bottom [6] is a straight cylindrical surfaces, and the entrance of outlet section [3] has rounding off to be connected with interlude [2] exit.
Compared with prior art, the utlity model has following beneficial effect: because the area of the jet action of coming out in the shaft bottom increases from nozzle, the rock shear action is strengthened, the landwaste lateral thrust is improved, can improve jet to shaft bottom cleansing power and auxiliary rock ability, avoid bit balling or repeat broken landwaste, improve bit speed, reduce drilling cost.Stressed turning to causes the cone shell erosion and broken teeth occurs, fall the tooth accident in the down-hole also can to avoid oblique nozzle.In addition, because the utility model does not need existing drill bit is changed, implement simple and convenient, cost is low, can play a multiplier effect.
Be further described below in conjunction with accompanying drawing and embodiment.
Fig. 1 is middle long structure of nozzle schematic diagram;
Fig. 2 is that the A of middle long nozzle is to view;
Fig. 3 is oblique structure of nozzle schematic diagram;
Fig. 4 is that the B of oblique nozzle is to view;
Fig. 5 is the structural representation of embodiment 1;
Fig. 6 is that the C of embodiment 1 is to view;
Fig. 7 is the structural representation of embodiment 2;
Fig. 8 is that the D of embodiment 2 is to view;
Among the figure: 1, streamlined entrance; 2, interlude; 3, outlet section; 4, exit bias; 5, nozzle outer surface top; 6, nozzle outer surface bottom; 7, nozzle bottom plane; 8, inclined-plane.
Bore portion comprises streamlined entrance [1], interlude [2] in the nozzle, outlet section [3], the axes intersect of interlude [2] and outlet section [3], form exit bias [4], the external surface of nozzle is made up of nozzle outer surface top [5] and nozzle outer surface bottom [6], and the center line of nozzle outer surface top [5] and nozzle outer surface bottom [6] parallels or overlaps.The interlude of nozzle [2] can be conical section, cylindrical section, streamlined section, exit bias [4] is 0 °～25 °, nozzle adopts compacting and vacuum-sintering to form, the cross sectional shape of outlet section [3] can be the shapes such as trapezoidal, oval, segmentation circular arc of rectangle, the transition of band arc chord angle of circular, band arc chord angle transition, and outlet section [3] entrance has rounding off to be connected with interlude [2] exit.Nozzle outer surface bottom [6] is a straight cylindrical surfaces.Jet enters from the streamlined entrance [1] of nozzle, behind interlude [2], deflects at outlet section [3], tooth is fully cleaned before the contact shaft bottom, can overcome plain nozzle, in, the extended jet nozzle jet vertically acts on the shaft bottom, the chip hold down that the shaft bottom landwaste is produced.Since the jet that from outlet section [3], comes out, the area that acts on the shaft bottom greater than the jet that from the outlet nozzle of circular section, comes out, can improve jet to shaft bottom cleansing power and auxiliary rock ability, reduce drilling cost.Because the center line of nozzle outer surface top [5] and nozzle outer surface bottom [6] parallels or overlaps, can overcome that oblique nozzle is stressed in the down-hole easily to be turned to and the shortcoming of erosion gear wheel.
Claims (9)
1, a kind of nozzle that is used for oil bit, bore portion comprises streamlined entrance [1], outlet section [3] in the nozzle, the external surface of nozzle is made up of nozzle outer surface top [5], nozzle outer surface bottom [6], nozzle bottom plane parts such as [7], it is characterized in that being between nozzle flow line style entrance [1] and the outlet section interlude [2], the axes intersect of interlude [2] and outlet section [3], form exit bias [4], the center line of nozzle outer surface top [5] and nozzle outer surface bottom [6] parallels or overlaps.
2, nozzle according to claim 1 is characterized in that interlude [2] can be conical section, cylindrical section, streamlined section.
3, nozzle according to claim 1 is characterized in that exit bias [4] is 0 °～25 °.
4, nozzle according to claim 1 is characterized in that adopting compacting and vacuum-sintering to form.
5, nozzle according to claim 1, the cross sectional shape that it is characterized in that outlet section [3] can be circular, as to be with arc chord angle transition rectangle, trapezoidal, oval, the segmentation circular arc of band arc chord angle transition.
6, nozzle according to claim 1 is characterized in that nozzle outer surface bottom [6] is straight cylindrical surfaces.
7, nozzle according to claim 1 is characterized in that can processing inclined-plane [8] on the nozzle bottom plane [7].
8, nozzle according to claim 7 is characterized in that the inclined-plane [8] and the angle on nozzle bottom plane [7] are 1 °～25 °.
9, nozzle according to claim 1 is characterized in that outlet section [3] entrance has rounding off to be connected with interlude [2] exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99237183 CN2386181Y (en) | 1999-02-09 | 1999-02-09 | Nozzle for oil drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99237183 CN2386181Y (en) | 1999-02-09 | 1999-02-09 | Nozzle for oil drilling bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2386181Y true CN2386181Y (en) | 2000-07-05 |
Family
ID=34024881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99237183 Expired - Lifetime CN2386181Y (en) | 1999-02-09 | 1999-02-09 | Nozzle for oil drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2386181Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114750078A (en) * | 2022-06-13 | 2022-07-15 | 中国航发上海商用航空发动机制造有限责任公司 | Nozzle, spray stop valve and finishing device |
-
1999
- 1999-02-09 CN CN 99237183 patent/CN2386181Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114750078A (en) * | 2022-06-13 | 2022-07-15 | 中国航发上海商用航空发动机制造有限责任公司 | Nozzle, spray stop valve and finishing device |
| CN114750078B (en) * | 2022-06-13 | 2022-10-21 | 中国航发上海商用航空发动机制造有限责任公司 | Nozzle, spray stop valve and finishing device |
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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 | ||
| CX01 | Expiry of patent term |