CN204024481U - Pointed tooth PDC drill bit - Google Patents
Pointed tooth PDC drill bit Download PDFInfo
- Publication number
- CN204024481U CN204024481U CN201420483322.1U CN201420483322U CN204024481U CN 204024481 U CN204024481 U CN 204024481U CN 201420483322 U CN201420483322 U CN 201420483322U CN 204024481 U CN204024481 U CN 204024481U
- Authority
- CN
- China
- Prior art keywords
- tooth
- cutting
- wing
- main cutting
- drill bit
- 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
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 241000256259 Noctuidae Species 0.000 claims abstract description 3
- 230000036346 tooth eruption Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 13
- 238000005553 drilling Methods 0.000 abstract description 8
- 239000003921 oil Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
A kind of pointed tooth PDC drill bit, comprise the main cutting tooth of bit matrix and upper installation thereof, protection tooth, gauge teeth, described bit matrix is steel body structure, and nominal diameter is 127-431.8mm, and bizet has 2-8 to cut wing.Be provided with 4-18 hydrophthalmias on the side of cutting wing, hydrophthalmia communicates with intrinsic silicon cavity.Described main cutting tooth is pointed tooth structure, is installed on and cuts the top of wing, and protection tooth is installed on each cutting wing bottom after a main cutting tooth, and gauge teeth is installed on bite underwing, is semi-cylindrical or semicircular planform structure.The utility model adopts pointed tooth cutting way to break rock stratum, be specially adapted to the oil development on super crisp hard wear-resisting stratum, the area of cut is little, cutting pressure is large, feeding is fast, the high-speed cutting on superhard wear stratum can be realized, the features such as drilling life of bit is long, saving drilling cost, extensively apply in drilling engineering.
Description
Technical field
The utility model relates to petroleum drilling engineering PDC drill bit, particularly a kind of pointed tooth PDC drill bit.
Background technology
The PDC drill bit of traditional oil drilling, its structure is generally cylinder contrate and cylinder founds tooth, and its cutting way is respectively cut-in type and ploughs into formula.The PDC oil bit of this structure is that oil exploitation drilling engineering contributes, but it also exists following shortcoming or deficiency simultaneously: 1. cylinder contrate adopts cut-in manner rock cutting, the contact area of cylinder contrate and rock is larger, cutting resistance is large, not easily cut stratum, therefore easily collapse broken composite sheet.2. quick abrasion, stock-removing efficiency is low, along with the wearing and tearing of composite sheet, cutting face becomes the straight angle gradually by three-dimensional fillet rapidly, and the area of bit cutting increases gradually, cuts pressure and reduces, the amount of feeding is constantly reduced, and drill bit arc top diminishes gradually, makes drill bit lose cutting power very soon.3. to found the diamond layer thickness of tooth on the low side for cylinder, and application life is shorter, and cutting effect is poor.
Summary of the invention
The purpose of this utility model is to provide a kind of pointed tooth PDC drill bit, adopt bit matrix to cut on wing and the sharp-tooth shaped main cutting tooth of arrangement and the combining structure of semi-cylindrical or semicircular planform gauge teeth are installed, make drilling well cut-in type and plough to become circular cone into formula formation cut mode and split rock formula cutting way, its area contacted with rock stratum is very little, cut pressure very large, be easy to penetrate rock stratum and split in rock stratum, speed is fast, efficiency is high, effectively overcomes or avoids the shortcoming that exists in above-mentioned prior art or deficiency.
Pointed tooth PDC drill bit described in the utility model, comprise the main cutting tooth of bit matrix and upper installation thereof, protection tooth, gauge teeth, described bit matrix is steel body structure, and nominal diameter is 127-431.8mm, and bizet has 2-8 to cut wing.Be provided with 4-18 hydrophthalmias on the side of cutting wing, hydrophthalmia communicates in intrinsic silicon cavity.Described main cutting tooth is pointed tooth structure, is installed on and cuts the top of wing, and protection tooth is installed on each cutting wing bottom after a main cutting tooth, and gauge teeth is installed on bite underwing, is semi-cylindrical or semicircular planform structure.
Wherein, described main cutting tooth adopts pointed tooth, and its cutting way is that the mode that pointed tooth splits rock is cut.The cutting wing of described matrix crown is arc shaped, and its camber line angle α 1 is 0 °-45 °, and fillet R is 0-90mm.Described cutting wing is at least provided with three main cutting teeth, the stepped diameters φ 2 of main cutting tooth is 10-25mm, and height overall h2 is 5-20mm, shoulder height h1 is 3-18mm.Described main cutting tooth is to lean forward or the mode of hypsokinesis is installed on and cuts on wing, and its top rake α 2 is 0 °-20 °, and back rake angle α 3 is 0-20 °.Be provided with 0-1 protection tooth after bottom main cutting tooth of described each cutting wing, its structure is cylinder contrate.
The utility model compared with prior art tool has the following advantages:
1, the cutting way of pointed tooth penetrates formula, and because pointed tooth is very sharp-pointed, the area contacted with rock stratum is very little, and it is very large that it cuts pressure, is easy to just penetrate rock stratum and split rock stratum.
2, main cutting tooth is that the cutting way that pointed tooth splits rock cuts, and cutting speed is fast, efficiency is high, is generally more than 2 times of contrate cutting speed.
3, the volume on pointed tooth top is little, and it cuts pushing the speed of significant surface and obviously reduces, and drilling efficiency is high, and cost is low.
4, add the thickness of pointed tooth upper end diamond layer, found the long service life of tooth than cylinder.
Accompanying drawing explanation
Fig. 1 is a kind of example structure schematic diagram of the present invention;
Fig. 2 is for by the plan structure schematic diagram shown in Fig. 1;
Fig. 3 is for by the A-A structural representation shown in Fig. 2;
Fig. 4 is for by the B-B structural representation shown in Fig. 2;
Fig. 5 is for by the B-B structural representation shown in Fig. 2;
Fig. 6 is for by the main cutting toothing schematic diagram shown in Fig. 1.
Detailed description of the invention
Consult Fig. 1-Fig. 6, a kind of pointed tooth PDC drill bit, comprise the main cutting tooth 2 of bit matrix 1 and upper installation thereof, protection tooth 3, gauge teeth 4, bit matrix 1 is steel body structure, and nominal diameter is 5-17 inches, and bizet has 2-8 to cut wing 5.Be provided with 4-18 hydrophthalmias 6 on the side of cutting wing 5, hydrophthalmia communicates with intrinsic silicon cavity.Main cutting tooth 2 is pointed tooth structure, is installed on and cuts the top of wing 5, and protection tooth 3 is installed on each cutting wing bottom after a main cutting tooth 2, and gauge teeth 4 is installed on and cuts wing 5 bottom, is semi-cylindrical or semicircular planform structure.
Main cutting tooth 2 adopts pointed tooth, and its cutting way is that the mode that pointed tooth splits rock is cut, and speed is fast, and efficiency is high.The cutting wing 5 of matrix 1 bizet is arc shaped, and its camber line angle α 1 is 0 °-45 °, is expressed as 30 ° in figure; Fillet R is expressed as 45mm in 0-90mm, figure.Cut on wing 5 and be at least provided with 3 main cutting teeth 2, the stepped diameters φ 2 of main cutting tooth 2 is expressed as 17mm in 10-25mm, figure; Height overall h2 is expressed as 12mm in 5-20mm, figure; Shoulder height h1 is expressed as 11mm in 3-18mm, figure.Main cutting tooth 2 is to lean forward or the mode of hypsokinesis is installed on and cuts on wing 5, and its top rake α 2 is 0 °-20 °, is expressed as 10 ° in figure; Back rake angle α 3 is expressed as 10 ° in 0-20 °, figure.Be provided with 0-1 protection tooth 3 after bottom main cutting tooth 2 of each cutting wing 5, its structure is cylinder contrate.
Claims (5)
1. a pointed tooth PDC drill bit, comprise the main cutting tooth of bit matrix and upper installation thereof, protection tooth, gauge teeth, described bit matrix is steel body structure, nominal diameter is 127-431.8mm, bizet has 2-8 to cut wing, 4-18 hydrophthalmias are provided with on the side of cutting wing, hydrophthalmia communicates with intrinsic silicon cavity, it is characterized in that described main cutting tooth is pointed tooth structure, be installed on the top of cutting wing, protection tooth is installed on each cutting wing bottom after a main cutting tooth, gauge teeth is installed on bite underwing, for semi-cylindrical or semicircular planform structure.
2. pointed tooth PDC drill bit according to claim 1, is characterized in that the cutting wing of described matrix crown is arc shaped, and its camber line angle α 1 is 0 °-45 °, and fillet R is 0-90mm.
3. pointed tooth PDC drill bit according to claim 1, is characterized in that described cutting wing is at least provided with three main cutting teeth, and the height overall h2 of main cutting tooth is 5-20mm, shoulder height h1 be 3-18mm, stepped diameters φ 2 is 10-25mm.
4. pointed tooth PDC drill bit according to claim 1, it is characterized in that described main cutting tooth is to lean forward or the mode of hypsokinesis is installed on and cuts on wing, its top rake α 2 is 0-20 °, and back rake angle α 3 is 0-20 °.
5. pointed tooth PDC drill bit according to claim 1, be provided with 0-1 protection tooth after it is characterized in that bottom main cutting tooth of described each cutting wing, its structure is cylinder contrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483322.1U CN204024481U (en) | 2014-08-26 | 2014-08-26 | Pointed tooth PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483322.1U CN204024481U (en) | 2014-08-26 | 2014-08-26 | Pointed tooth PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024481U true CN204024481U (en) | 2014-12-17 |
Family
ID=52064365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420483322.1U Expired - Lifetime CN204024481U (en) | 2014-08-26 | 2014-08-26 | Pointed tooth PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024481U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196458A (en) * | 2014-08-26 | 2014-12-10 | 莱州市原野科技有限公司 | Sharp-tooth PDC drill bit |
| CN104847273A (en) * | 2015-05-19 | 2015-08-19 | 中国水利水电第十工程局有限公司 | Semi-spherical multi-layer cutting drill and drilling tool with the same |
-
2014
- 2014-08-26 CN CN201420483322.1U patent/CN204024481U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196458A (en) * | 2014-08-26 | 2014-12-10 | 莱州市原野科技有限公司 | Sharp-tooth PDC drill bit |
| CN104847273A (en) * | 2015-05-19 | 2015-08-19 | 中国水利水电第十工程局有限公司 | Semi-spherical multi-layer cutting drill and drilling tool with the same |
| CN104847273B (en) * | 2015-05-19 | 2017-08-29 | 中国水利水电第十工程局有限公司 | The hemispherical drill bit of multilayer cutting and the boring bar tool with the drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |