CN201292770Y - High strength eccentric reaming tool - Google Patents
High strength eccentric reaming tool Download PDFInfo
- Publication number
- CN201292770Y CN201292770Y CN 200820218608 CN200820218608U CN201292770Y CN 201292770 Y CN201292770 Y CN 201292770Y CN 200820218608 CN200820218608 CN 200820218608 CN 200820218608 U CN200820218608 U CN 200820218608U CN 201292770 Y CN201292770 Y CN 201292770Y
- Authority
- CN
- China
- Prior art keywords
- cutting teeth
- tool
- well
- eccentric
- eccentric block
- 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 - Fee Related
Links
- 230000036346 tooth eruption Effects 0.000 claims abstract description 24
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 9
- 239000010432 diamond Substances 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 238000005498 polishing Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Abstract
The utility model relates to a high-intensity eccentric-type hole expanding tool which comprises an upper joint, a tool body, a knife wing, a lower joint, cutting teeth and an eccentric block. Because the upper part of the tool body is provided with the upper joint, the lower part is provided with the lower joint, the middle part is provided with the knife wing and the cutting teeth, the tool is integrally processed by high strength steel, the body is not provided with movable subassemblies to avoid the danger that the hole expanding knife wing falls into the well, the occurrence of complicated conditions underground can be prevented, and the passing degree of a well completion pipe post in a bent well section with high build angle rate is increased. The eccentric-type hole expanding tool adopts hard alloy as the eccentric block to increase wearing resistance, diamond composite pieces as the cutting teeth to delay the break and the wear time of the cutting teeth, and the cutting teeth are distributed on the whole outline of the knife tool so that load are evenly distributed. The utility model can well enlarge a well diameter and is suitable for popularization and application on site.
Description
Technical field:
The utility model relates to employed reaming tool in the sidetrack horizontal well operation of a kind of oil field, particularly high strength eccentric type reaming tool.
Background technology:
At present the oil field sidetrack horizontal well has sidetracked hole, the total advantage of horizontal well concurrently, is to reduce cost of winning, improve recovery ratio, employ one of the most effective means of original oil zone reserves.But the short serious hindrance that becomes this technical development of restriction of its life-span.The sidetrack horizontal well annular clearance is little, completion tubular column the degree of passing through of high build angle rate curved portion problem such as low and cementing section difference be badly in need of solving.
Summary of the invention:
The purpose of this utility model is to provide high strength eccentric type reaming tool.This utility model solution sidetrack horizontal well well cementation section annular clearance is little, completion tubular column hangs down problem the degree of passing through of high build angle rate curved portion, increases the hole diameter of oil layer section simultaneously, to increase drainage area, the raising oil well output.
The purpose of this utility model is achieved in that by top connection, tool body, wing, lower contact, cutting teeth and eccentric block to be formed, and tool body top is top connection, lower contact is arranged at the bottom, there are wing, cutting teeth in the centre, and there is eccentric block the outside, and eccentric block is a carbide alloy; Cutting teeth is a diamond compact, the apparent height polishing.
Operating principle: during work, top connects drilling tool, and the bottom connects drill bit, owing to be subjected to the support of eccentric block, produce eccentric force during the instrument rotation, make not diamond cutting tooth in same axle center, reach the maximum outside diameter 180mm of cutting chi when rotated, thereby reach the purpose that enlarges hole diameter.Elder generation's float amount turn on pump, starting rotating disk instrument is fixed on the operation of setting point reaming hole, treat that tool operation steadily after, progressively strengthen discharge capacity to normal.Can pressurize this moment, and the broken rock under the effect of eccentricity of the cutting edge on the blade carries out the reaming hole construction.
The utility model is top connection owing to having adopted tool body top, lower contact is arranged at the bottom, there is wing the centre, and there is eccentric block the outside, and lower contact is connected to cutting teeth, adopt the whole processing of high strength steel, because be whole processing, itself does not have movable part, avoided the fall danger of well of reaming wing, can prevent the generation of down hole problem, improve the degree of passing through of completion tubular column at high build angle rate curved portion.Because taked the design with the pilot bit partial installation, so without limits to employed neck eye drilling assembly and bite type.This eccentric type reaming tool adopts carbide alloy as eccentric block, increases abrasion resistance; Diamond compact is as cutting teeth, and carried out rational layout aspect geometry, to strengthen the cutting power of diamond cutting tooth, delays the time that cutting teeth breaks and weares and teares.In addition, the polishing of cutting teeth apparent height to reduce shear stress, improves the chip removal ability.And this eccentric type reaming tool adopts the wing of differing heights, and working angles is easy to from neck eye diameter transition to the reaming hole diameter.Cutting teeth is distributed on the whole profile of cutter, so that load distribution is even.To reach the purpose that high-quality enlarges hole diameter.Be well suited for field popularization application.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a left view of the present utility model.
The specific embodiment:
Below in conjunction with Fig. 1, Fig. 2 the utility model is described further.
By Fig. 1,2 as can be seen, the utility model is made up of top connection 1, tool body 2, wing 3, lower contact 4, cutting teeth 5 and eccentric block 6, and tool body 2 tops are top connections 1, lower contact 4 is arranged at the bottom, there are wing 3, cutting teeth 5 in the centre, and there is eccentric block 6 outside, and eccentric block 6 is a carbide alloy; Cutting teeth 5 is a diamond compact, the apparent height polishing, and cutting teeth is distributed on the whole profile of cutter.This instrument is to adopt the whole processing of high strength steel, owing to be whole processing, itself does not have movable part, has avoided the fall danger of well of reaming wing, can prevent the generation of down hole problem, has improved the degree of passing through of completion tubular column at high build angle rate curved portion.Because taked the design with the pilot bit partial installation, so without limits to employed neck eye drilling assembly and bite type.This eccentric type reaming tool adopts carbide alloy as eccentric block, increases abrasion resistance; Diamond compact is as cutting teeth, and carried out rational layout aspect geometry, to strengthen the cutting power of diamond cutting tooth, delays the time that cutting teeth breaks and weares and teares.In addition, the polishing of cutting teeth apparent height to reduce shear stress, improves the chip removal ability.And this eccentric type reaming tool adopts the wing of differing heights, and working angles is easy to from neck eye diameter transition to the reaming hole diameter.Cutting teeth is distributed on the whole profile of cutter, so that load distribution is even, to reach the purpose that high-quality enlarges hole diameter.
Claims (2)
1, high strength eccentric type reaming tool, form by top connection (1), tool body (2), wing (3), lower contact (4), cutting teeth (5) and eccentric block (6), it is characterized in that: tool body (2) top is top connection (1), lower contact (4) is arranged at the bottom, there are wing (3), cutting teeth (5) in the centre, and there is eccentric block (6) outside.
2, high strength eccentric type reaming tool according to claim 1 is characterized in that: eccentric block (6) is a carbide alloy; Cutting teeth (5) is a diamond compact, and the apparent height polishing is distributed on the whole profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820218608 CN201292770Y (en) | 2008-10-22 | 2008-10-22 | High strength eccentric reaming tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820218608 CN201292770Y (en) | 2008-10-22 | 2008-10-22 | High strength eccentric reaming tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201292770Y true CN201292770Y (en) | 2009-08-19 |
Family
ID=41006245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820218608 Expired - Fee Related CN201292770Y (en) | 2008-10-22 | 2008-10-22 | High strength eccentric reaming tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201292770Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894730A (en) * | 2018-07-24 | 2018-11-27 | 徐芝香 | There is the static pushing type rotary steerable tool of packet |
-
2008
- 2008-10-22 CN CN 200820218608 patent/CN201292770Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894730A (en) * | 2018-07-24 | 2018-11-27 | 徐芝香 | There is the static pushing type rotary steerable tool of packet |
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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: 20090819 Termination date: 20111022 |