CN209670929U - With brill formula wellbore trimmer - Google Patents
With brill formula wellbore trimmer Download PDFInfo
- Publication number
- CN209670929U CN209670929U CN201920244413.2U CN201920244413U CN209670929U CN 209670929 U CN209670929 U CN 209670929U CN 201920244413 U CN201920244413 U CN 201920244413U CN 209670929 U CN209670929 U CN 209670929U
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- trimmer
- trigone
- wellbore
- helical wing
- wing plate
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Abstract
The utility model belongs to drilling equipment technical field, more particularly to one kind with bore formula wellbore trimmer include fishing neck, trimmer ontology and lower contact, trimmer ontology is equipped with two groups of trigone helical wing plates being axially distributed, the quantity of every group of trigone helical wing plate is three, and three trigone helical wing plate circumference uniform distributions, composite polycrystal-diamond is studded on the cutting edge of trigone helical wing plate, heap is welded with hard alloy wear-resistant material on gage surface；Fishing neck is equipped with internal screw thread button；Lower contact is taper thread.Axial arranging group number and circumferentially distributed quantity of the trimmer by rational design fin, improve the safety with brill, can be effectively prevented from pit shaft build the pressure, the generation of the safety accidents such as bit freezing, logging blocking, cementing quality difference, structure is simple, design rationally, reduces production cost.
Description
Technical field:
The utility model belongs to drilling equipment technical field, and in particular to a kind of with brill formula wellbore trimmer.
Background technique:
It is to be directed in wellbore construction well caused by due to geology, drilling fluid and operation etc. with formula wellbore trimmer is bored
Eye misconduct (spiral rather than cylinder wellbore) and the wellbore dressing tool developed.It can modify wellbore with boring, and remove in time
The wellbore of undergauge, keyway or misconduct, to guarantee wellbore construction safety.But it is existing to be set as with the fin for boring formula wellbore trimmer
Three groups of axial arranging or four groups, every group of fin is that quantity is four, and circumference uniform distribution.This axial and circumferential are more intensively arranged
The plasma discharge in drilling course of the fin of column is obstructed, and plasma discharge is caused to have some setbacks, often will appear pit shaft build the pressure, bit freezing, logging blocking,
The complex situations such as cementing quality difference, there are security risks.If fin is reduced to one group or circumferential quantity is set as 2 wings
Piece, then its intensity is inadequate, also can not work normally.By test of many times and Strength co-mputation, to improve with brill formula wellbore trimmer
Safety, the quantity of group number and all airfoils that reasonable axial fin is arranged on trimmer ontology is particularly important.So
Design a kind of structure it is simple and safe and reliable be very necessary with formula wellbore trimmer is bored.
Utility model content:
It is simple the purpose of the utility model is to provide a kind of structure and safe and reliable with boring formula wellbore trimmer, the finishing
Axial arranging group number and circumferentially distributed quantity of the device by rational design fin, improve the safety with brill, can effectively keep away
Exempt from pit shaft build the pressure, the generation of the safety accidents such as bit freezing, logging blocking, cementing quality difference, structure is simple, and design rationally, reduces
Production cost, it is economic and practical, it is easy to promotion and application on a large scale.
The technical solution adopted in the utility model are as follows: a kind of with brill formula wellbore trimmer, including fishing neck, trimmer ontology
And lower contact, the trimmer ontology are equipped with two groups of trigone helical wing plates being axially distributed, every group of trigone helical wing plate
Quantity be three, and three trigone helical wing plate circumference uniform distributions；Plycrystalline diamond gold is studded on the cutting edge of the trigone helical wing plate
Hard rock composite sheet, heap is welded with hard alloy wear-resistant material on gage surface.
Further, the fishing neck is equipped with internal screw thread button.
Further, the internal screw thread button uses and the consistent 4A10 button-type of drill string button.
Further, the lower contact is taper thread.
Further, the taper thread uses and the consistent 4A11 button-type of drill string button.
The utility model has the beneficial effects that provide a kind of structure it is simple and safe and reliable with boring formula wellbore trimmer,
Axial arranging group number and circumferentially distributed quantity of the trimmer by rational design fin, improve the safety with brill, can have
Effect ground avoids pit shaft from building the pressure, the generation of the safety accidents such as bit freezing, logging blocking, cementing quality difference, easy-to-operate, and structure is simple
Single, design rationally, reduces production cost, economic and practical, is easy to promotion and application on a large scale.It will be with brill formula wellbore trimmer
It is connected on drill string, by drill string rotating, band power driven tools rotate together.Meanwhile under the action of drill string lateral centrifugal force, pass through
The composite polycrystal-diamond being embedded on fin carries out continuous scraping to the borehole wall, reaches the borehole size for expanding shrinkage section,
The round and smooth finishing borehole wall, guarantees wellbore extension cylindrical, prevents the purpose that Spiral borehole is formed in drilling process in time, solution can
The drilling complexity problem that can occur.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of embodiment one；
Fig. 2 is the sectional view of trimmer ontology in embodiment one.
Specific embodiment:
Embodiment one
Referring to Figures 1 and 2, a kind of with brill formula wellbore trimmer, including fishing neck 1, trimmer ontology 2 and lower contact 4, institute
It states trimmer ontology 2 and is equipped with two groups of trigone helical wing plates 3 being axially distributed, the quantity of every group of trigone helical wing plate 3 is
Three, and three 3 circumference uniform distributions of trigone helical wing plate；It is multiple that polycrystalline diamond is studded on the cutting edge of the trigone helical wing plate 3
Piece is closed, heap is welded with hard alloy wear-resistant material on gage surface；The fishing neck 1 is equipped with internal screw thread button；The internal screw thread button
Using with the consistent 4A10 button-type of drill string button；The lower contact 4 is taper thread；The taper thread uses consistent with drill string button
4A11 button-type.
With formula wellbore trimmer is bored, it is made of fishing neck, trimmer ontology, lower contact three parts.Pass through salvaging when use
Neck and the screw thread of lower contact are connect with drill string, are rotated together in drilling process with drill string, under the effect of lateral centrifugal force, to the borehole wall
It carries out expanding reaming finishing, eliminates the Spiral borehole generated in drilling.In order to improve the effect of the finishing borehole wall, fin uses trigone spiral shell
Rotating structure studs with composite polycrystal-diamond on the fin of trimmer ontology, and the hardness of composite sheet is high, wearability is good, work
During tool rotation, the continuous scraping borehole wall of composite sheet plays the preferable effect for expanding the reaming finishing borehole wall.For the ease of with
Drill string connection, upper and lower button-type use and the consistent 4A10/4A11 button-type of drill string button-type.By fishing neck, tool body and lower contact
Three parts composition.For convenience of use, for fishing neck using clamping structure is hung, button identical with drill string is can be used in upper and lower ends button-type
Type reduces and uses connector.
Claims (6)
1. a kind of with brill formula wellbore trimmer, including fishing neck (1), trimmer ontology (2) and lower contact (4), it is characterised in that:
The trimmer ontology (2) is equipped with two groups of trigone helical wing plates (3) being axially distributed, every group of trigone helical wing plate (3)
Quantity be three, and three trigone helical wing plate (3) circumference uniform distributions；It is studded on the cutting edge of the trigone helical wing plate (3)
Composite polycrystal-diamond.
2. according to claim 1 a kind of with brill formula wellbore trimmer, it is characterised in that: the fishing neck (1) is equipped with
Internal screw thread button.
3. according to claim 2 a kind of with brill formula wellbore trimmer, it is characterised in that: the internal screw thread button uses and brill
The consistent 4A10 button-type of column button.
4. according to claim 1 a kind of with brill formula wellbore trimmer, it is characterised in that: the lower contact (4) is cone spiral shell
Line.
5. according to claim 4 a kind of with brill formula wellbore trimmer, it is characterised in that: the taper thread uses and drill string
Detain consistent 4A11 button-type.
6. according to claim 2 a kind of with brill formula wellbore trimmer, it is characterised in that: the trigone helical wing plate (3)
Gage surface on heap be welded with hard alloy wear-resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920244413.2U CN209670929U (en) | 2019-02-27 | 2019-02-27 | With brill formula wellbore trimmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920244413.2U CN209670929U (en) | 2019-02-27 | 2019-02-27 | With brill formula wellbore trimmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209670929U true CN209670929U (en) | 2019-11-22 |
Family
ID=68569819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920244413.2U Active CN209670929U (en) | 2019-02-27 | 2019-02-27 | With brill formula wellbore trimmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209670929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113492297A (en) * | 2021-07-01 | 2021-10-12 | 陈元 | Process for machining follow-up rotation cleaning scriber |
-
2019
- 2019-02-27 CN CN201920244413.2U patent/CN209670929U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113492297A (en) * | 2021-07-01 | 2021-10-12 | 陈元 | Process for machining follow-up rotation cleaning scriber |
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