CN204024480U - Be applicable to the plough cut type PDC drill bit of hard formation - Google Patents
Be applicable to the plough cut type PDC drill bit of hard formation Download PDFInfo
- Publication number
- CN204024480U CN204024480U CN201420360060.XU CN201420360060U CN204024480U CN 204024480 U CN204024480 U CN 204024480U CN 201420360060 U CN201420360060 U CN 201420360060U CN 204024480 U CN204024480 U CN 204024480U
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- Prior art keywords
- diamond
- tooth
- composite polycrystal
- pdc
- drill bit
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- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 54
- 239000010432 diamond Substances 0.000 claims abstract description 52
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 51
- 230000036346 tooth eruption Effects 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims description 16
- 239000011435 rock Substances 0.000 abstract description 30
- 238000005553 drilling Methods 0.000 abstract description 28
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model provides a kind of plough cut type PDC drill bit being applicable to hard formation, comprise bit matrix, wing, cutting teeth, described bit matrix is arranged at least two wings, chip area is provided with between adjacent blades, described wing arranges cutting teeth, and described cutting teeth comprises taper PDC tooth and composite polycrystal-diamond that each wing is all arranged.Composite polycrystal-diamond harrows angle rock cutting later, and taper PDC tooth is then with positive rake angle plow rock.Taper PDC tooth crest is sharp-pointed, easy wedging rock, and forms " ditch dug with a plow " in shaft bottom, and release bottom rock internal stress, reduces rock strength; Composite polycrystal-diamond work plane is comparatively large, can rock cutting in large area.The combination of two kinds of different structure PDC teeth, can improve the efficiency of breaking rock of drill bit greatly, effectively solves the problems such as hard formation bit speed is slow, bit life is low, reaches the object improving drilling efficiency, shorten drilling period, reduce drilling cost.
Description
Technical field
The utility model relates to oil and gas well drilling drill bit, specifically a kind of plough cut type PDC drill bit being applicable to hard formation.
Background technology
PDC drill bit, as a kind of efficient rock-breaking instrument, obtains and applies more and more widely in oil/gas drilling, and it is in soft-medium hard formation, and drilling speed is fast, and drilling depth is high.But in the oil gas drilling work under deep-well and complex geological condition, often bore bad grounds such as meeting carbonate rock, igneous rock and metamorphic rock, its intensity is high, and hardness is large, and drillability is poor, and abrasiveness is strong.Adopt conventional PDC drill bit to creep into above-mentioned stratum, PDC cutter-wear rate is very fast, and cause rate of penetration slow, footage per bit is low, the life-span is short, and drilling period is long, cost is high.Therefore, be necessary to design a kind of PDC drill bit being specifically designed to hard formation drilling well.
Summary of the invention
The purpose of this utility model is to provide a kind of plough cut type PDC drill bit being applicable to hard formation, effectively can solve the problems such as the bit life occurred in drilling process under deep-well and complex geological condition is short, drilling efficiency is low, reach the object improving drilling efficiency, shorten drilling period, reduce drilling cost.
The purpose of this utility model realizes by following technical measures:
This plough cut type PDC drill bit being applicable to hard formation comprises bit matrix, wing, cutting teeth, described bit matrix is arranged at least two wings, chip area is provided with between adjacent blades, described wing arranges cutting teeth, and described cutting teeth comprises taper PDC tooth and composite polycrystal-diamond that each wing is all arranged.
The purpose of this utility model also realizes by following technical measures:
Described composite polycrystal-diamond is arranged on wing as main cutting tooth in hypsokinesis mode, back rake angle scope 7 degree to 13 degree; Taper PDC tooth is arranged on wing as rear toothrow in the mode of leaning forward, top rake scope 13 degree to 18 degree.
Described composite polycrystal-diamond is as main cutting tooth, and by waiting wearing and tearing principle along shaft bottom outline line cloth tooth, described taper PDC tooth, as rear toothrow, adopts with composite polycrystal-diamond with rail or staggered cloth tooth mode.
Described taper PDC tooth and composite polycrystal-diamond interlock cloth tooth time, the shaft bottom Cutting trajectory of taper PDC tooth is on the outline line of shaft bottom between adjacent two composite polycrystal-diamond shaft bottom Cutting trajectories.
When described taper PDC tooth and composite polycrystal-diamond are arranged with rail, the shaft bottom Cutting trajectory of taper PDC tooth is identical with one of them composite polycrystal-diamond shaft bottom Cutting trajectory on the outline line of shaft bottom.
When described taper PDC tooth and composite polycrystal-diamond adopt interlaced arrangement, both height of protrusion on wing are identical.
When described taper PDC tooth and composite polycrystal-diamond adopt and arrange with rail, the height of protrusion of taper PDC tooth is lower than below composite polycrystal-diamond 2mm.
Be provided with nozzle in described chip area, nozzle insert is on bit matrix.
Plough cut type PDC drill bit of the present utility model is in drilling process, and taper PDC tooth is with top rake plow rock, and because conical tooth top is sharp-pointed, easy wedging rock, forms " ditch dug with a plow " in shaft bottom, can effectively destroy rock internal stress, reduces rock strength; Then, composite polycrystal-diamond with back rake angle rock cutting, because self work plane is comparatively large, can efficiency crushing rock, realize fast drilling.
Wherein when taper PDC tooth and composite polycrystal-diamond interlaced arrangement, first taper PDC cutting teeth goes out groove in rock surface plow, due to taper PDC tooth, to break rock work plane less, two taper PDC between cog adjacent on the outline line of shaft bottom are formed and do not destroy phacolith, cut broken subsequently by the composite polycrystal-diamond between above-mentioned two taper PDC tooth traces, the comprehensive detritus at the bottom of completed well.
When wherein taper PDC tooth and composite polycrystal-diamond are arranged with rail, first taper PDC cutting teeth forms groove at rock surface, continues along ditch groove cutting subsequently, original groove is widened, the comprehensive detritus at the bottom of completed well with its composite polycrystal-diamond with rail.
This type PDC drill bit has good hard formation rock breaking capacity and higher rate of penetration, effectively can solve the problems such as the bit life occurred in drilling process under deep-well and complex geological condition is short, drilling efficiency is low, reach the object improving drilling efficiency, shorten drilling period, reduce drilling cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that taper PDC tooth and composite polycrystal-diamond interlock cloth tooth schematic diagram;
Fig. 3 is that taper PDC tooth and composite polycrystal-diamond are with rail cloth tooth schematic diagram;
Fig. 4 is that taper PDC tooth and the composite polycrystal-diamond cloth tooth that interlocks breaks rock schematic diagram;
Fig. 5 is that taper PDC tooth and composite polycrystal-diamond break rock schematic diagram with rail cloth tooth.
In figure: 1-bit matrix; 2-wing; 3-composite polycrystal-diamond; 4-taper PDC cutting teeth; 5-nozzle; 6-chip area.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the utility model.
As shown in Figure 1, plough cut type PDC drill bit, comprise: the parts such as bit matrix 1, wing 2, composite polycrystal-diamond 3, taper PDC tooth 4, nozzle 5 and chip area 6, wing 2 is positioned on bit body 1, chip area 6 is provided with between adjacent blades 2, be provided with nozzle 5 in chip area 6, nozzle 5 insert is on bit body 1.Wing 2 is furnished with some composite polycrystal-diamonds 3 and taper PDC tooth 4, composite polycrystal-diamond 3 is as main cutting tooth, by waiting wearing and tearing principle along shaft bottom outline line cloth tooth, taper PDC tooth 4, as rear toothrow, adopts with composite polycrystal-diamond 3 with rail or staggered cloth tooth mode.
Embodiment 1
When taper PDC tooth 4 and composite polycrystal-diamond 3 interlaced arrangement, as shown in Figure 2, the shaft bottom Cutting trajectory of taper PDC tooth 4 is on the outline line of shaft bottom between the Cutting trajectory of adjacent composite polycrystal-diamond 3 shaft bottom.Described composite polycrystal-diamond, as the main cutting tooth of wing, is arranged on wing in hypsokinesis mode, the back rake angle scope of composite sheet 7 degree to 13 degree.Described taper PDC tooth, as the rear toothrow of wing, is arranged on wing in the mode of leaning forward, the top rake scope of conical tooth 13 degree to 18 degree.When described taper PDC tooth and composite polycrystal-diamond adopt and interlock cloth tooth, both height of protrusion are identical.
As shown in Figure 3, adopt in the plough cut type drill bit drilling process of above-mentioned cloth tooth mode, taper PDC tooth 4 is with positive rake angle plow rock, groove is formed at rock surface, formed between two taper PDC teeth 4 adjacent on the outline line of shaft bottom and do not destroy phacolith, fragmentation is cut, the comprehensive detritus at the bottom of completed well by the composite polycrystal-diamond 3 between above-mentioned two taper PDC tooth 4 tracks.
Embodiment 2
When taper PDC tooth 4 is arranged with rail with composite polycrystal-diamond 3, as shown in Figure 4, the shaft bottom Cutting trajectory of taper PDC cutting teeth 4 is identical with one of them composite polycrystal-diamond 3 shaft bottom Cutting trajectory on the outline line of shaft bottom.Described composite polycrystal-diamond, as the main cutting tooth of wing, is arranged on wing in hypsokinesis mode, the back rake angle scope of composite sheet 7 degree to 13 degree.Described taper PDC tooth, as the rear toothrow of wing, is arranged on wing in the mode of leaning forward, the top rake scope of conical tooth 13 degree to 18 degree.When described taper PDC tooth and composite polycrystal-diamond adopt with rail cloth tooth, the height of protrusion of taper PDC tooth is lower than below composite polycrystal-diamond 2mm.
As shown in Figure 5, adopt in the plough cut type drill bit drilling process of above-mentioned cloth tooth mode, taper PDC tooth 4 is with positive rake angle plow rock, groove is formed at rock surface, it is broken that composite polycrystal-diamond 3 will remain Rock Cutting with back rake angle, original groove is made to widen and be connected, the comprehensive detritus at the bottom of completed well.
Plough cut type PDC drill bit have employed the mix design of composite polycrystal-diamond and taper PDC tooth, utilize the feature of taper PDC tooth and little, the easy wedging rock of rock contact area, leading fractured rock, thus change shaft bottom geostatic stress condition, the feature that the recycling composite polycrystal-diamond area of cut is large, detritus efficiency is high, completes follow-up broken rock.Plough cut type PDC drill bit can effectively solve in hard drilling process, and the problems such as bit speed is slow, bit wear is fast, the life-span is low arrive the object improving drilling efficiency, shorten drilling period, reduce drilling cost.
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (8)
1. be applicable to the plough cut type PDC drill bit of hard formation, comprise bit matrix, wing, cutting teeth, described bit matrix is arranged at least two wings, chip area is provided with between adjacent blades, described wing arranges cutting teeth, it is characterized in that, described cutting teeth comprises taper PDC tooth and composite polycrystal-diamond that each wing is all arranged.
2. the plough cut type PDC drill bit being applicable to hard formation according to claim 1, it is characterized in that, described composite polycrystal-diamond is arranged on wing as main cutting tooth in hypsokinesis mode, back rake angle scope 7 degree to 13 degree; Taper PDC tooth is arranged on wing as rear toothrow in the mode of leaning forward, top rake scope 13 degree to 18 degree.
3. the plough cut type PDC drill bit being applicable to hard formation according to claim 1, it is characterized in that, described composite polycrystal-diamond is as main cutting tooth, by waiting wearing and tearing principle along shaft bottom outline line cloth tooth, described taper PDC tooth, as rear toothrow, adopts with composite polycrystal-diamond with rail or staggered cloth tooth mode.
4. the plough cut type PDC drill bit being applicable to hard formation according to claim 3, it is characterized in that, described taper PDC tooth and composite polycrystal-diamond interlock cloth tooth time, the shaft bottom Cutting trajectory of taper PDC tooth is on the outline line of shaft bottom between adjacent two composite polycrystal-diamond shaft bottom Cutting trajectories.
5. the plough cut type PDC drill bit being applicable to hard formation according to claim 3, it is characterized in that, when described taper PDC tooth and composite polycrystal-diamond are arranged with rail, the shaft bottom Cutting trajectory of taper PDC tooth is identical with one of them composite polycrystal-diamond shaft bottom Cutting trajectory on the outline line of shaft bottom.
6. the plough cut type PDC drill bit being applicable to hard formation according to claim 3, is characterized in that, when described taper PDC tooth and composite polycrystal-diamond adopt interlaced arrangement, both height of protrusion on wing are identical.
7. the plough cut type PDC drill bit being applicable to hard formation according to claim 3, is characterized in that, when described taper PDC tooth and composite polycrystal-diamond adopt and arrange with rail, the height of protrusion of taper PDC tooth is lower than below composite polycrystal-diamond 2mm.
8. the plough cut type PDC drill bit being applicable to hard formation according to claim 3, it is characterized in that, be provided with nozzle in described chip area, nozzle insert is on bit matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360060.XU CN204024480U (en) | 2014-07-01 | 2014-07-01 | Be applicable to the plough cut type PDC drill bit of hard formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360060.XU CN204024480U (en) | 2014-07-01 | 2014-07-01 | Be applicable to the plough cut type PDC drill bit of hard formation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024480U true CN204024480U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420360060.XU Expired - Lifetime CN204024480U (en) | 2014-07-01 | 2014-07-01 | Be applicable to the plough cut type PDC drill bit of hard formation |
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| CN (1) | CN204024480U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275403A (en) * | 2014-07-01 | 2016-01-27 | 中国石油化工集团公司 | A plowing type PDC drill bit suitable for hard formations |
| CN105780783A (en) * | 2016-04-28 | 2016-07-20 | 中国水电基础局有限公司 | Trenching construction method of large-inclination angle steep rock |
| CN105804057A (en) * | 2016-04-28 | 2016-07-27 | 中国水电基础局有限公司 | Construction method for concrete diaphragm wall of deep bedrock |
| CN105971502A (en) * | 2016-04-28 | 2016-09-28 | 中国水电基础局有限公司 | Deep and thick bed rock composite grooving method |
| CN112324344A (en) * | 2020-12-04 | 2021-02-05 | 中国石油天然气集团有限公司 | Hybrid drill bit for plowing, cutting and grinding composite rock breaking |
| RU221827U1 (en) * | 2023-09-15 | 2023-11-24 | Общество с ограниченной ответственностью "Научно-производственная фирма Завод "Измерон" | DOWNHOLE MILLING MILLER |
| CN117188979A (en) * | 2023-11-07 | 2023-12-08 | 吉林大学 | Drilling tooth with primary and secondary tooth structure, manufacturing method and drill bit |
-
2014
- 2014-07-01 CN CN201420360060.XU patent/CN204024480U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275403A (en) * | 2014-07-01 | 2016-01-27 | 中国石油化工集团公司 | A plowing type PDC drill bit suitable for hard formations |
| CN105780783A (en) * | 2016-04-28 | 2016-07-20 | 中国水电基础局有限公司 | Trenching construction method of large-inclination angle steep rock |
| CN105804057A (en) * | 2016-04-28 | 2016-07-27 | 中国水电基础局有限公司 | Construction method for concrete diaphragm wall of deep bedrock |
| CN105971502A (en) * | 2016-04-28 | 2016-09-28 | 中国水电基础局有限公司 | Deep and thick bed rock composite grooving method |
| CN105780783B (en) * | 2016-04-28 | 2018-03-27 | 中国水电基础局有限公司 | High inclination-angle abrupt slope rock forming construction method thereof |
| CN105804057B (en) * | 2016-04-28 | 2019-06-25 | 中国水电基础局有限公司 | Deep basement rock construction method for diaphragm walls |
| CN112324344A (en) * | 2020-12-04 | 2021-02-05 | 中国石油天然气集团有限公司 | Hybrid drill bit for plowing, cutting and grinding composite rock breaking |
| RU221827U1 (en) * | 2023-09-15 | 2023-11-24 | Общество с ограниченной ответственностью "Научно-производственная фирма Завод "Измерон" | DOWNHOLE MILLING MILLER |
| CN117188979A (en) * | 2023-11-07 | 2023-12-08 | 吉林大学 | Drilling tooth with primary and secondary tooth structure, manufacturing method and drill bit |
| CN117188979B (en) * | 2023-11-07 | 2024-01-23 | 吉林大学 | Drilling tooth with primary and secondary tooth structure, manufacturing method and drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141217 |