CN107558930A - A kind of PDC impact head drill bits with pre-impact effect - Google Patents
A kind of PDC impact head drill bits with pre-impact effect Download PDFInfo
- Publication number
- CN107558930A CN107558930A CN201710976786.4A CN201710976786A CN107558930A CN 107558930 A CN107558930 A CN 107558930A CN 201710976786 A CN201710976786 A CN 201710976786A CN 107558930 A CN107558930 A CN 107558930A
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- Prior art keywords
- pdc
- impact head
- impact
- drill bit
- telescoping mechanism
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- Pending
Links
- 230000000694 effects Effects 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000005553 drilling Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 210000000515 tooth Anatomy 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 30
- 238000007790 scraping Methods 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 6
- 230000035515 penetration Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of PDC impact head drill bits with pre-impact effect, it is made up of preposition new impact head, impact head telescoping mechanism and conventional PDC drill bit.Preposition new impact head is connected with telescoping mechanism inner core, impact teeth is installed on impact head, and chip area and water jet are provided with the outside of impact head；Telescoping mechanism is made up of inner core and overcoat, is combined be connected using slideway between the two, and respectively devise limited block in both combine connection；There is external screw thread telescoping mechanism overcoat lower end, for being connected with PDC drill bit；PDC teeth are in the EDS maps of diagonal three on PDC wings；Chip area is all designed between per adjacent two PDC wings, hole for water spraying has all been uniformly arranged on chip area.The present invention first carries out pre- destruction to rock to reduce the intensity of rock, recycles PDC drill bit to carry out secondary scraping destruction, greatly reduces the stick slip vibration of cross force suffered by PDC drill bit and drill string, and extend the service life of PDC drill bit and drilling tool.
Description
Technical field
The present invention relates to a kind of PDC- impact head drill bits with pre-impact effect, belong to the power auger that petroleum resources is exploited
Has device field.
Background technology
With the increase to Oil And Gas Exploration And Development dynamics both at home and abroad so that petroleum resources exploits work gradually to depth
Well, ultradeep well and the development of complicated bad ground.Drill bit is the instrument that rock is directly acted in oil/gas drilling exploitation, but traditional
Rock bit and PDC drill bit in drilling process, efficiency of breaking rock is low, and rotating speed is slow and short life, can not meet to raise speed instantly
The drilling technology requirement of synergy, the then adaptability of the length of bit life, drill bit and rock, to improving rate of penetration and drop
Low drilling cost plays an important role.
Most commonly used in current oil drilling well is rock bit and PDC drill bit.Conventional PDC drill bit is soft in big section of homogeneous
When being crept into stratum, have that rate of penetration is fast, long lifespan, the advantages that drilling depth is more, but to the adaptability of deep and bad ground compared with
Difference, though rate of penetration is high unstable so that and impact failure and high temperature wear phenomenon easily occur for PDC teeth, cause the drill bit longevity
Life greatly shortens；And rock bit mainly by impact, crushing, small-sized scraping mode fractured rock, efficiency of breaking rock is extremely low, and
Its bearing life is very short.In the case where soft or hard staggeredly stratum etc. complicated difficult bores formation condition, easily there is mud drum in alone rock bit, alone
PDC drill bit tooth damage is serious, causes rotating speed slow, the problems such as frequent trips.
Combined drill drilling well is the new technology quickly grown in recent years, is typically crushed using pre-impact or when boring
The mode of expansion, reach the principle of a graded crushing rock.PDC- impact heads drill bit with pre-impact effect can be to rock
Pre-impact effect is carried out, graded crushing rock, preposition impact head quick washing rock, greatly reduces the intensity of rock, then
PDC drill bit carries out secondary scraping and crushed.The cross force of PDC drill bit and the stick slip vibration of drilling rod are largely improved, from
And the stability of drilling well, rate of penetration are improved, extend the service life of drill bit and drilling tool, realize the spudder of speed-raising synergy
Skill growth requirement.
The content of the invention
The invention aims to improve the deficiency of existing drill bit breaking technique for rock, there is provided a kind of PDC- of pre-impact effect
Impact head drill bit, realize speed-raising synergy drilling technology demand so that solve instantly single oil-gas mining drill bit for deep
The inadaptability of complicated bad ground drilling, the problem of rate of penetration is slow and bit life is low.
The technical solution adopted in the present invention is：A kind of PDC- impact head drill bits of pre-impact effect of the present invention, by preposition
New impact head, impact head telescoping mechanism and conventional PDC drill bit composition, preposition new impact head and impact head telescoping mechanism inner core
It is connected, impact head telescoping mechanism and conventional PDC drill bit are connected through a screw thread；Impact teeth is installed on impact head, and in impact head
Outside is provided with chip area and water jet；Described impact head telescoping mechanism is made up of inner core and overcoat, is utilized between the two
Inner core telescopic chute is connected with the combination of overcoat telescopic chute, and overcoat limited block and inner core limit are each devised in both connect
Position block, both limit relative positions of limitation；PDC teeth are in the EDS maps of diagonal three on PDC drill bit wing, to meet PDC drill bit
Secondary scraping fractured rock；Chip area is all designed between per adjacent two PDC wings, water spray has all been uniformly arranged on chip area
Hole, conventional PDC drill bit body lower section are connected by screw thread with drilling rod.
Impact teeth on preposition new impact head can adjust the position of tooth, quantity and tooth according to different drilling conditions
Type；And the impact head of different sizes can be selected according to different drilling well demands.
The impact distance of the stretching of impact head can be adjusted, and change the position of the limited block put outside telescoping mechanism by designing
Put, the operating distance of impact head can be adjusted, to meet different types of broken rock stratum condition.
Compared with the prior art, the present invention has advantages below：1st, impact precrushing is carried out to rock, substantially reduces rock
Intensity, discharge the stress of surrounding rock；2nd, the size of impact head and the impact distance of impact head are can adjust, realizes different rush
The effect of precrushing is hit, improve the adaptability that drill bit crushes to deep bad ground needs to reach the drilling technology of speed-raising synergy
Ask；3rd, because rock stress discharges so that the stick slip vibration of suffered cross force and drilling rod is big in the secondary drilling process of PDC drill bit
It is big to reduce, the service life of drill bit and drilling tool is greatly enhanced, reduces trip time and cost.
Brief description of the drawings
Fig. 1 is to invent a kind of overall structure diagram of the PDC- impact head drill bits of pre-impact effect.
Fig. 2 is to invent a kind of centrosymmetric structure sectional view of the PDC- impact head drill bits of pre-impact effect.
Fig. 3 is the structure chart of invention impact head telescoping mechanism inner core.
Fig. 4 is the centrosymmetric structure sectional view of invention impact head telescoping mechanism overcoat.
In figure：1. preposition new impact head, 2. impact head telescoping mechanisms, 3.PDC drill bodies, 4.PDC drill bits hole for water spraying,
5. chip area, 6. preposition new impact head hole for water sprayings, 7. connection screw threads, 8. telescoping mechanism overcoat limited blocks, 9.PDC teeth, 10. punchings
Tap the head tooth, 11. inner core telescopic chutes, 12. telescoping mechanism inner core limited blocks, 13. bottoms be hit post block, in 14. telescoping mechanisms
Core, 15. telescoping mechanism overcoats, 16. overcoat telescopic chutes.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of PDC- impact head drill bits of pre-impact effect of the present invention, by preposition new impact
First 1, impact head telescoping mechanism 2 and conventional PDC drill bit composition 3, preposition new impact head 1 and impact head telescoping mechanism inner core 14 phase
Connection, impact head telescoping mechanism 2 and conventional PDC drill bit 3 are connected through a screw thread；It is furnished with this example on preposition new impact head 1
More impact teeths 10 and multiple hole for water sprayings 6；Hole for water spraying 6 on impact head is each connected with drill bit internal runner；Described
Impact head telescoping mechanism 2 is combined by inner core 14 and overcoat 15, is stretched between the two using inner core telescopic chute 11 and overcoat
Contracting slideway 16 combines so that the overall bottom of inner core-impact head be hit post block 13 can under jump bit effect forward along
Slideway combination, which is slided, stretches out, and each devises overcoat limited block 8 and inner core limited block 12, limitation two in both combine connection
Person's limit relative position；PDC teeth 9 are in the EDS maps of diagonal three on PDC wings, to meet that the secondary scraping of PDC drill bit crushes
Rock；Chip area 5 is all designed between per adjacent two PDC wings, hole for water spraying 4, PDC drill bit have all been uniformly arranged on chip area 5
The lower section of body 3 is connected by screw thread 7 with drilling rod.The impact distance of the stretching of impact head 1 can be adjusted, and be stretched by using different
The position of limited block 8 on contracting mechanism overcoat 15, the operating distance of impact head 1 can be adjusted, to meet different types of drilling well
Broken rock situation.
Operation principle：
During actual well drilled, it can be improved by using various sizes of impact head and the impact distance of regulation impact head
Drill bit realizes the drilling technology demand of speed-raising synergy to the adaptability of deep layer bad ground broken rock.The present invention passes through following approach
Realize its function：When deep layer complexity bad ground is crept into, the preposition impact head of the drill bit carries out impacting pre- break first to rock
It is broken, the stress in country rock is discharged, and then PDC drill bit crushes to the secondary scraping of precrushing rock surrounding progress, reaches to rock
Carry out the effect of quick crashing.
Claims (2)
- A kind of 1. PDC- impact head drill bits of pre-impact effect of the present invention, by preposition new impact head（1）, impact head telescoping mechanism （2）With conventional PDC drill bit（3）Composition, preposition new impact head（1）With impact head telescoping mechanism inner core（14）It is connected, impacts Head telescoping mechanism（2）With conventional PDC drill bit（3）It is connected through a screw thread；Preposition new impact head（1）On be furnished with more impact teeths （10）And multiple hole for water sprayings（6）；Described impact head telescoping mechanism is by inner core（14）And overcoat（15）Combine, both Between utilize inner core telescopic chute（11）With overcoat telescopic chute（16）Combination, and each devised outside in both combine connection Cover limited block（8）With inner core limited block（12）, both limit relative positions of limitation；PDC teeth（9）It is in pair on PDC drill bit wing The EDS maps of linea angulata three；Chip area is all designed between per adjacent two PDC wings（5）, hole for water spraying has all been uniformly arranged on chip area （4）, conventional PDC drill bit body lower section passes through screw thread（7）It is connected with drilling rod.
- A kind of 2. PDC- impact head drill bits of pre-impact effect according to claims 1, it is characterised in that：It is preposition new Impact head can select different size designs to use；Change the position of the limited block put outside telescoping mechanism by designing, To adjust the operating distance of preposition impact head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976786.4A CN107558930A (en) | 2017-10-19 | 2017-10-19 | A kind of PDC impact head drill bits with pre-impact effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976786.4A CN107558930A (en) | 2017-10-19 | 2017-10-19 | A kind of PDC impact head drill bits with pre-impact effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107558930A true CN107558930A (en) | 2018-01-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710976786.4A Pending CN107558930A (en) | 2017-10-19 | 2017-10-19 | A kind of PDC impact head drill bits with pre-impact effect |
Country Status (1)
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|---|---|
| CN (1) | CN107558930A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179983A (en) * | 2018-02-26 | 2018-06-19 | 西南石油大学 | It is a kind of to rush the efficient rock-breaking combination tool for revolving-scraping and cut staged effect |
| CN108612480A (en) * | 2018-06-29 | 2018-10-02 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of vortex pulse shock drill bit |
| CN109488221A (en) * | 2018-11-26 | 2019-03-19 | 邹城兖矿泰德工贸有限公司 | Drill pipe for hard rocks |
| CN110067516A (en) * | 2019-05-22 | 2019-07-30 | 成都迪普金刚石钻头有限责任公司 | A kind of quick washing-, which is scraped, cuts combined type broken rock PDC drill bit |
| CN110253054A (en) * | 2019-06-28 | 2019-09-20 | 王文昭 | A kind of drill bit |
| CN111411898A (en) * | 2020-05-28 | 2020-07-14 | 西南石油大学 | Composite drill bit |
| CN112177532A (en) * | 2020-09-11 | 2021-01-05 | 祁东县锋速钻探工具有限公司 | High-efficiency geological drill bit capable of expanding stratum application range |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179983A (en) * | 2018-02-26 | 2018-06-19 | 西南石油大学 | It is a kind of to rush the efficient rock-breaking combination tool for revolving-scraping and cut staged effect |
| CN108612480A (en) * | 2018-06-29 | 2018-10-02 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of vortex pulse shock drill bit |
| CN109488221A (en) * | 2018-11-26 | 2019-03-19 | 邹城兖矿泰德工贸有限公司 | Drill pipe for hard rocks |
| CN110067516A (en) * | 2019-05-22 | 2019-07-30 | 成都迪普金刚石钻头有限责任公司 | A kind of quick washing-, which is scraped, cuts combined type broken rock PDC drill bit |
| CN110067516B (en) * | 2019-05-22 | 2024-03-22 | 倪政敏 | Quick impact-scraping and cutting combined rock breaking PDC drill bit |
| CN110253054A (en) * | 2019-06-28 | 2019-09-20 | 王文昭 | A kind of drill bit |
| CN110253054B (en) * | 2019-06-28 | 2020-07-10 | 胜利油田盛辉石油技术开发有限责任公司 | Drill bit |
| CN111411898A (en) * | 2020-05-28 | 2020-07-14 | 西南石油大学 | Composite drill bit |
| CN112177532A (en) * | 2020-09-11 | 2021-01-05 | 祁东县锋速钻探工具有限公司 | High-efficiency geological drill bit capable of expanding stratum application range |
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| PB01 | Publication | ||
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Application publication date: 20180109 |