CN206000470U - A kind of antiimpact PDC drill bit - Google Patents
A kind of antiimpact PDC drill bit Download PDFInfo
- Publication number
- CN206000470U CN206000470U CN201620987859.0U CN201620987859U CN206000470U CN 206000470 U CN206000470 U CN 206000470U CN 201620987859 U CN201620987859 U CN 201620987859U CN 206000470 U CN206000470 U CN 206000470U
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- drill bit
- main cutting
- hard
- tooth
- wing
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Abstract
The utility model is related to a kind of antiimpact PDC drill bit, include bit body, circumferentially spaced on bit body it is provided with wing, main cutting tooth is installed on along inner cone, nose and shoulder before wing, it is characterized in that hard-metal insert is laid in the part in described main cutting tooth, diamond compact is laid in part.The abrasive resistance of the employing main cutting tooth of the present utility model impact resistance of hard-metal insert that has been the structure assembly of hard-metal insert and diamond compact interspersion and diamond compact, drill bit is made to have preferable shock resistance and anti-wear performance concurrently, drill bit is enable to possess stronger aggressiveness, strong but variation of lithological is not used than more frequently stratum to be suitable to abrasiveness, can improve PDC drill bit rate of penetration while having longer service life concurrently；Due to the low manufacture cost of hard-metal insert, PDC drill bit cost of manufacture therefore can be reduced.
Description
Technical field
The utility model is related to a kind of antiimpact PDC drill bit, belongs to oil and geological drilling drilling tool technical field.
Background technology
PDC drill bit is the widely used drill bit of present oil and geological drilling, with composite sheet material progress and cutting knot
The progress of structure, its scope of application are more and more wider, drilling drilling depth ratio more and more higher.
PDC drill bit typically using cut mode come fractured rock, so as to reach the purpose of rapid drilling.When PDC drill bit work
When making, composite sheet overcomes reservoir stress incision stratum forward slip in the presence of the pressure of the drill and moment of torsion, and rock is in cutting tooth
Effect its shear direction of lower edge crushes and produces Plastic Flow, and the landwaste produced by cutting is in bulk sheet.
As the progress of material technology, the stratum that current PDC drill bit adapts to are more and more, require in same time drilling process
The stratum that passes through is also more and more, and user expects also to can guarantee that while different stratum all can guarantee that rate of penetration faster
Life-span.During actual well drilled, in some cases, stratum abrasiveness is not strong, but variation of lithological is more frequent, diamond compact
Impact failure is commonly encountered, and due to material behavior, diamond compact determines that its impact resistance is limited, cause PDC drill bit easy
Collapse tooth destruction.
Content of the invention
Technical problem to be solved in the utility model is a kind of simultaneous for the not enough offer of above-mentioned prior art presence
Tool impact resistance and the antiimpact PDC drill bit of anti-wear performance.
The utility model by solving the problems, such as the technical scheme for adopting set forth above is：Include bit body, bit body
Upper circumferentially spaced be provided with wing, be installed on main cutting tooth along inner cone, nose and shoulder before wing, it is characterised in that institute
Hard-metal insert is laid in part in the main cutting tooth that states, and diamond compact is laid in part.
By technique scheme, all hard-metal inserts of the main cutting tooth at inner cone position before described wing, remaining
The main cutting tooth at position is diamond compact.
By technique scheme, before described wing, the main cutting tooth at inner cone position is that hard-metal insert is multiple with diamond
Piece interspersion is closed, the main cutting tooth at remaining position is diamond compact.
By technique scheme, the main cutting tooth of inner cone, nose and shoulder before described wing is hard alloy
Tooth and diamond compact interspersion.
By technique scheme, described main cutting tooth is that hard-metal insert is spaced with the wing of diamond compact interspersion
It is laid staggeredly on bit body, the main cutting tooth of remaining wing is diamond compact.
By technique scheme, described hard-metal insert profile of tooth is cylinder, elliptical cylinder-shape, the one kind or several in taper
Kind, with shearing or plow function.
By technique scheme, before described wing, in main cutting tooth, hard-metal insert is thrown with diamond compact cutting
Shadow is on same envelope.
By technique scheme, main cutting tooth projection before described wing has two envelopes, first envelope
By hard-metal insert arrangement form, by diamond compact arrangement form, the first envelope is higher than the second bag for Article 2 envelope
Winding thread.
The beneficial effects of the utility model are：1st, it is hard-metal insert and diamond compact interspersion to adopt main cutting tooth
The structure assembly impact resistance of hard-metal insert and the abrasive resistance of diamond compact, have concurrently drill bit preferably anti-
Impact property and anti-wear performance, enable drill bit to possess stronger aggressiveness, are suitable to that abrasiveness is strong but variation of lithological is more frequent
Stratum use, PDC drill bit rate of penetration can be improved while having longer service life concurrently；2nd, due to the making of hard-metal insert
Low cost, therefore can reduce PDC drill bit cost of manufacture.
Description of the drawings
Fig. 1 is the three-dimensional structure diagram of the utility model one embodiment.
Fig. 2 is the schematic diagram of main cutting tooth envelope in wing part in the utility model one embodiment.
Fig. 3 is the three-dimensional structure diagram of another embodiment of the utility model.
Fig. 4 is the three-dimensional structure diagram of the 3rd embodiment of the utility model.
Fig. 5 is the schematic diagram of main cutting tooth envelope in wing part in Fig. 4.
Specific embodiment
The utility model is described further below in conjunction with accompanying drawing.
Fig. 1, Fig. 2 are one embodiment of the present utility model, include bit body 1, and bit body top is drill handle part
5, the circumferentially spaced wing 4 for being provided with bent on bit body, master is installed on along inner cone, nose and shoulder before wing cut
Tooth 3 is cut, the main cutting tooth of inner cone, nose and shoulder before described wing is hard-metal insert and diamond compact is mixed
Cloth, the main cutting tooth projection have two envelopes, respectively the first envelope（In figure solid line）With the second envelope（In figure
Dotted line）, the first envelope L, L=0.5 higher than the second envelope ~ 2mm, arrange by cutting tooth tooth heart radial location order, odd number
Tooth projection is tangent with the first envelope, and the projection of even number tooth is tangent with the second envelope.Odd number tooth is hard-metal insert, even number
Number tooth is diamond compact., by hard-metal insert arrangement form, Article 2 envelope is multiple by diamond for i.e. first envelope
Close piece arrangement form.Additionally, being additionally provided with nozzle 2 on bit body, the side of wing is laid with gauge teeth.Process in drilling
In, the higher hard-metal insert elder generation wedging stratum of enveloping surface is cut, so that reservoir stress is discharged in advance, due to its first wedging stratum,
Impact capacity suffered by which is also larger accordingly, but as hard-metal insert has preferable impact resistance so as to adapt to
This kind of situation.Meanwhile, entering stratum after diamond compact, make impulsive force suffered by diamond compact relatively small, its drill bit is whole
Body is protected.The drill bit is integrated with the impact resistance of hard-metal insert and the abrasive resistance of diamond compact, makes drill bit
With preferable shock resistance and abrasive resistance, enable drill bit to possess stronger aggressiveness, drill bit rate of penetration is improve while simultaneous
The longer service life of tool.
Second embodiment is as shown in figure 3, with the difference of one embodiment, which is that the hard of its odd number is closed
Golden tooth profile of tooth has the hard-metal insert 3a of plow function for crown with convex tough and crown, and the diamond of remaining even number tooth is multiple
Piece 3b is closed for circular profile of tooth.
3rd embodiment as shown in Figure 4,5, is embodiment of the present utility model 3, and which is different from one embodiment
Part is before described wing in main cutting tooth that hard-metal insert is projected in same envelope with diamond compact cutting
On, i.e., the projection of all main cutting teeth is all tangent with an envelope.
Claims (8)
1. a kind of antiimpact PDC drill bit, includes bit body, circumferentially spaced on bit body be provided with wing, before wing
Main cutting tooth is installed on along inner cone, nose and shoulder, it is characterised in that hard alloy is laid in the part in described main cutting tooth
Tooth, part lay diamond compact.
2. the antiimpact PDC drill bit as described in claim 1, it is characterised in that the main cutting at inner cone position before described wing
The all hard-metal inserts of tooth, the main cutting tooth at remaining position is diamond compact.
3. the antiimpact PDC drill bit as described in claim 1, it is characterised in that the main cutting at inner cone position before described wing
Tooth is hard-metal insert and diamond compact interspersion, and the main cutting tooth at remaining position is diamond compact.
4. the antiimpact PDC drill bit as described in claim 1, it is characterised in that inner cone before described wing, nose and shoulder
The main cutting tooth in portion is hard-metal insert and diamond compact interspersion.
5. the antiimpact PDC drill bit as described in Claims 2 or 3 or 4, it is characterised in that described main cutting tooth is hard alloy
Tooth is laid on bit body with the wing interleaved of diamond compact interspersion, and the main cutting tooth of remaining wing is multiple for diamond
Close piece.
6. the antiimpact PDC drill bit as described in Claims 2 or 3 or 4, it is characterised in that described hard-metal insert profile of tooth is circle
Cylindricality, elliptical cylinder-shape, one or more in taper, with shearing or plow function.
7. the antiimpact PDC drill bit as described in Claims 2 or 3 or 4, it is characterised in that before described wing in main cutting tooth
Hard-metal insert is projected on same envelope with diamond compact cutting.
8. the antiimpact PDC drill bit as described in claim 4, it is characterised in that the projection of main cutting tooth is total before described wing
Two envelopes, first envelope arrange shape by hard-metal insert arrangement form, Article 2 envelope by diamond compact
Become, the first envelope is higher than the second envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620987859.0U CN206000470U (en) | 2016-08-31 | 2016-08-31 | A kind of antiimpact PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620987859.0U CN206000470U (en) | 2016-08-31 | 2016-08-31 | A kind of antiimpact PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206000470U true CN206000470U (en) | 2017-03-08 |
Family
ID=58196183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620987859.0U Active CN206000470U (en) | 2016-08-31 | 2016-08-31 | A kind of antiimpact PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206000470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859489A (en) * | 2017-12-13 | 2018-03-30 | 中石化江钻石油机械有限公司 | A kind of two-stage cutting type PDC drilling bit |
| CN107905737A (en) * | 2017-12-21 | 2018-04-13 | 中石化江钻石油机械有限公司 | A kind of three-level cuts insert cone Mixed drilling bit |
-
2016
- 2016-08-31 CN CN201620987859.0U patent/CN206000470U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859489A (en) * | 2017-12-13 | 2018-03-30 | 中石化江钻石油机械有限公司 | A kind of two-stage cutting type PDC drilling bit |
| CN107905737A (en) * | 2017-12-21 | 2018-04-13 | 中石化江钻石油机械有限公司 | A kind of three-level cuts insert cone Mixed drilling bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180327 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Kingdream Sinopec Petroleum Machinery Co. Ltd. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: Sinopec petroleum machinery Limited by Share Ltd Kingdream branch |
|
| TR01 | Transfer of patent right |