CN103015899A - Mixed drilling bit with enhanced core part cutting function - Google Patents
Mixed drilling bit with enhanced core part cutting function Download PDFInfo
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- CN103015899A CN103015899A CN2012105525562A CN201210552556A CN103015899A CN 103015899 A CN103015899 A CN 103015899A CN 2012105525562 A CN2012105525562 A CN 2012105525562A CN 201210552556 A CN201210552556 A CN 201210552556A CN 103015899 A CN103015899 A CN 103015899A
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Abstract
The invention relates to a mixed drilling bit with an enhanced core part cutting function used for petroleum, natural gas and geology drilling. The mixed drilling bit comprises a drilling bit body, wherein cutter wings and a spray nozzle are arranged on the drilling bit body, the outline of the cutter wings is divided into a core part, an inner cone, a nose part, a shoulder part and a diameter maintaining part from inside to outside, fixed cutting teeth are arranged at the inner cone, the nose part, the shoulder part and the diameter maintaining part of the outline of the cutter wings on the cutter wings, a tooth palm is arranged between the cutter wings, the upper end of the tooth palm is connected into a whole with the drill bit body, the lower end of the tooth palm is provided with a tooth wheel, and tooth wheel cutting teeth are arranged on the tooth wheel. The mixed drilling bit is characterized in that the core part of the lower end of the drilling bit body is provided with the movable cutting teeth. The mixed drilling bit has strong integral performance, and shaft bottom rock can be effectively subjected to pre-crushing, so the fixed cutting teeth of the drilling bit can effectively enter the rock, in addition, the impact on the fixed cutting teeth can be reduced, the cutting efficiency and the mechanical drilling speed of the core part of the drilling bit can be respectively improved and accelerated, and the integral cutting efficiency and the mechanical drilling speed can be respectively improved and accelerated.
Description
Technical field
The present invention relates to a kind of Mixed drilling bit of the reinforcement heart section cutting function of using for oil, natural gas and geological drilling, this drill bit is applicable to the drilling well on hard formation and interlayer stratum.
Background technology
In the prior art, when drilling well runs into hard formation, PDC diamond bit commonly used mainly is to realize that by the scraping motion mode down-hole creeps into, fixedly cutting teeth main on the nose of diamond bit and the shoulder is difficult to effective wedging bottom rock, and it is very slow that the rate of penetration of diamond bit will become; And rock bit easily makes rock produce darker crushing teeth hole to impact crushing mode fractured rock, but because the stratum is hard, can not make rock produce volumetric fracture, therefore the stock-removing efficiency of rock bit cutting teeth is also very low.In addition on the one hand, when drill bit runs into the more stratum of some soft or hard interlayers, the fixedly cutting teeth of PDC diamond bit very easily is subject to impacting damaged, in order to tackle this situation, Chinese patent literature CN200880016630.0 discloses the Mixed drilling bit that is combined by rock bit and PDC diamond bit, though this Mixed drilling bit has stronger combination property, but there is following deficiency: because the rock breaking mechanism of the peculiar impact crushing of tricone bit, the shock loading that the gear wheel rotation produces easily causes the fixedly cutting teeth composite sheet of drill bit broken, thereby cause the reduction of drill bit rate of penetration, and the most close drill bit axial centre is fixing cutting teeth on this drill bit, because fixedly cutting teeth is too near to the drill bit axial centre, the radius of gyration is little, and cutting speed is low, thereby stock-removing efficiency is low; And should be fixedly cutting teeth speed cut separately shaft bottom axial centre rock, the load of bearing is larger, is prone to the composite bed fragmentation or comes off.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that exists for above-mentioned prior art and a kind of Mixed drilling bit of strengthening heart section cutting function is provided, not only combination property is strong for it, can carry out effectively precracking to bottom rock, so that the effective wedging rock of the fixedly cutting teeth of drill bit, and can reduce the fixedly impact of cutting teeth, strengthen stock-removing efficiency and the rate of penetration of drill bit heart section, thereby improve stock-removing efficiency and the rate of penetration of drill bit.
The present invention is that the technical scheme that the problem of the above-mentioned proposition of solution adopts is: include bit body, wing and nozzle are set on the bit body, the wing profile is divided into heart section, inner cone, nose, shoulder and gauge section from the inside to the outside; Inner cone, nose, shoulder and gauge section at wing upper slitter wing contour are installed on fixedly cutting teeth, bit leg is arranged between the wing, described bit leg upper end is connected into one with bit body, gear wheel is installed in the lower end of bit leg, be installed on the gear wheel cutting teeth on the gear wheel, its difference is to be provided with movable cutting teeth in described bit body lower end heart section.
Press such scheme, the outermost profile of described gear wheel cutting teeth covers line and covers outside the line at the outermost profile of described fixedly cutting teeth, the outermost profile of described gear wheel cutting teeth cover line and fixedly the distance that covers between the line of the outermost profile of cutting teeth be 0.3 ~ 5 millimeter.
Press such scheme, described wing is 2 ~ 4; Described gear wheel is 2 ~ 4.
Press such scheme, described movable cutting teeth comprises axial blind hole and the movable cutting teeth of installing in axial blind hole, and the axis of movable cutting teeth departs from mutually with the bit body axis, and departing from distance is 0.5 ~ 40 millimeter.
Press such scheme, described movable cutting teeth is the circular shaft shape, leading section is provided with petal cutting teeth, axial region is stairstepping, anterior diameter is less, the stairstepping axial blind hole phase configuration that movable cutting teeth and drill bit body-centered section arrange is installed on axial baffle ring in the axial blind hole, baffle ring connects firmly mutually with bit body.
Press such scheme, described movable cutting teeth diameter is 5 ~ 40 millimeters, and the petal cutting teeth of described leading section is along circumferentially being provided with 2 ~ 5 cutting edges.
Press such scheme, described gear wheel is insert cone, and described movable cutting teeth is made by carbide alloy or polycrystalline diamond, or is composited by carbide alloy and polycrystalline diamond.
Press such scheme, described fixedly cutting teeth is diamond compact.
Press such scheme, the rotation of described gear wheel becomes 30 ° ~ 70 ° angle with the rotation of bit body.
Beneficial effect of the present invention is: 1, the impact of rock bit is pressed into the scraping campaign of diamond bit and organically combines mutually, realize the shaft bottom precracking, guarantee the fixedly effective wedging rock of cutting teeth, eliminate drill bit at some special formation generation stick-slip phenomenons, reduce the fixedly shock loading of cutting teeth, reduce the fixedly damaged probability of cutting teeth impact, improve bit cutting efficient and rate of penetration; 2, the movable cutting teeth installed of drill bit body-centered section, because with respect to the bit body axis bias, thereby the movement velocity of the relative bottom rock of movable cutting teeth is larger, the cutting speed that is movable cutting teeth is larger, and the multi-tool edge of movable cutting teeth cuts simultaneously, has strengthened stock-removing efficiency and the rate of penetration of drill bit heart section; 3, since the outermost profile of gear wheel cutting teeth cover line and cover outside the line at the outermost profile of described fixedly cutting teeth, the shock loading that drill bit produces is in the course of the work mainly born by the gear wheel cutting teeth, further reduced the shock loading of PDC composite sheet, reduce the PDC composite sheet and impacted damaged probability, thereby improved whole stock-removing efficiency and the rate of penetration of drill bit.
Description of drawings
Stereogram when Fig. 1 is one embodiment of the invention handstand.
Top view when Fig. 2 is one embodiment of the invention handstand.
Fig. 3 be gear wheel cutting teeth of the present invention and fixedly the outermost profile of cutting teeth cover the perspective view of line.
Fig. 4 is the A-A sectional view of Fig. 2.
Fig. 5 is the partial enlarged drawing of the movable cutting teeth region among Fig. 4.
Fig. 6 is the stereogram of movable cutting teeth.
Fig. 7 is the stereogram of baffle ring.
Fig. 8 has the cutting speed distribution map of the fixedly cutting teeth of Mixed drilling bit or PDC drill bit heart section now for when bit.
Fig. 9 is the cutting speed distribution map of movable cutting teeth time rotational.
Figure 10 is the cutting speed distribution map after the speed among Fig. 8 and Fig. 9 is synthesized.
The specific embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing.
Include bit body 1, along circumferentially 3 wings 2 and nozzle 7 being set, the profile 17 of wing is divided into heart section 21, inner cone 22, nose 23, shoulder 24 and gauge section 25 from the inside to the outside on the bit body; The inner cone 22 of profile, nose 23, shoulder 24 and gauge section 25 are installed on respectively fixedly cutting teeth 3 on the wing, and fixedly cutting teeth 3 is diamond compact; Be provided with bit leg 4 on the bit body between each wing, described bit leg upper end is integrally welded with bit body 1, the lower end of bit leg arranges axle journal, and gear wheel 5 is sleeved on the axle journal and by steel ball and axially locks, the angle α of rotation 8 at 45 ° ~ 60 of the rotation of gear wheel 9 and bit body °.Be installed on gear wheel cutting teeth 6 on the gear wheel, the gear wheel cutting teeth on the described gear wheel is positioned at 24 of the nose 23 of wing profile and shoulders.Heart section 21 at the wing profile, that is the lower end heart section of bit body is provided with an axial blind hole, be installed on a movable cutting teeth 10 in the axial blind hole and by axial baffle ring 13 axial location, axial blind hole axis that is movable cutting teeth axis 11 depart from respect to bit body axis 8, and departing from distance is 5 ~ 25 millimeters; Described movable cutting teeth is the circular shaft shape, diameter is 10 ~ 30 millimeters, leading section is provided with petal cutting teeth, cutting teeth is along circumferentially being provided with 3 cutting edges 12, and axial region is stairstepping, and anterior diameter is less, movable cutting teeth and stairstepping axial blind hole phase configuration, be installed on axial baffle ring in the axial blind hole, baffle ring connects firmly mutually with bit body, and described movable cutting teeth is composited by carbide alloy and polycrystalline diamond.Described axial blind hole is shoulder hole, and axially baffle ring 13 is installed in the shoulder hole of lower end, and movable cutting teeth 10 can rotate in axial blind hole.The outermost profile of described gear wheel cutting teeth covers line 19 and covers outside the line 18 at the outermost profile of described fixedly cutting teeth, the outermost profile of gear wheel cutting teeth cover line and fixedly the distance C that covers between the line of the outermost profile of cutting teeth be 0.5 ~ 1 millimeter.
When bit body during around 8 rotation of self axis, the cutting speed distribution map of the fixedly cutting teeth of existing Mixed drilling bit or PDC drill bit heart section as shown in Figure 8, this moment Mixed drilling bit or PDC drill bit heart section fixedly cutting teeth on part cutting speed near bit body axis 8 very low; Movable cutting teeth is around self axis 11 time rotational, and the cutting speed distribution map of movable cutting teeth as shown in Figure 9; When movable cutting teeth both with drill bit revolution, again around self axis 11 time rotational, synthetic cutting speed distribution map as shown in figure 10, the part cutting speed near bit body axis 8 on this moment movable cutting teeth has a more substantial increase.
When the present invention works, the scraping campaign that the impact of rock bit is pressed into diamond bit combines, the gear wheel cutting teeth is realized the shaft bottom precracking, guarantee the fixedly effective wedging rock of cutting teeth, eliminate drill bit at some special formation generation stick-slip phenomenons, reduce the fixedly shock loading of cutting teeth, reduce the fixedly damaged probability of cutting teeth impact, improve bit cutting efficient and rate of penetration; The movable cutting teeth 10 that install in the centre of bit body, because with respect to the bit body axis bias, thereby the movement velocity of the relative bottom rock of movable cutting teeth is larger, be that movable cutting teeth cutting speed is larger, and the multi-tool edge of movable cutting teeth cuts simultaneously, further improves stock-removing efficiency and the rate of penetration of drill bit heart section.
Claims (9)
1. a Mixed drilling bit of strengthening heart section cutting function includes bit body, and wing and nozzle are set on the bit body, and the wing profile is divided into heart section, inner cone, nose, shoulder and gauge section from the inside to the outside; Inner cone, nose, shoulder and gauge section at wing upper slitter wing contour are installed on fixedly cutting teeth, bit leg is arranged between the wing, described bit leg upper end is connected into one with bit body, gear wheel is installed in the lower end of bit leg, be installed on the gear wheel cutting teeth on the gear wheel, it is characterized in that being provided with movable cutting teeth in described bit body lower end heart section.
2. by the Mixed drilling bit of the reinforcement heart claimed in claim 1 section cutting function, the outermost profile that it is characterized in that described gear wheel cutting teeth covers line and covers outside the line at the outermost profile of described fixedly cutting teeth, the outermost profile of described gear wheel cutting teeth cover line and fixedly the distance that covers between the line of the outermost profile of cutting teeth be 0.3 ~ 5 millimeter.
3. by the Mixed drilling bit of claim 1 or 2 described reinforcement heart section cutting functions, it is characterized in that described wing is 2 ~ 4.
4. by the Mixed drilling bit of the reinforcement heart claimed in claim 3 section cutting function, it is characterized in that described gear wheel is 2 ~ 4.
5. by the Mixed drilling bit of claim 1 or 2 described reinforcement heart section cutting functions, it is characterized in that described movable cutting teeth comprises axial blind hole and the movable cutting teeth of installing in axial blind hole, the axis of movable cutting teeth departs from mutually with the bit body axis, and departing from distance is 0.5 ~ 40 millimeter.
6. by the Mixed drilling bit of the reinforcement heart claimed in claim 5 section cutting function, it is characterized in that described movable cutting teeth is the circular shaft shape, leading section is provided with petal cutting teeth, axial region is stairstepping, anterior diameter is less, the stairstepping axial blind hole phase configuration that movable cutting teeth and drill bit body-centered section arrange is installed on axial baffle ring in the axial blind hole, baffle ring connects firmly mutually with bit body.
7. by the Mixed drilling bit of the reinforcement heart claimed in claim 6 section cutting function, it is characterized in that described movable cutting teeth diameter is 5 ~ 40 millimeters, the petal cutting teeth of described leading section is along circumferentially being provided with 2 ~ 5 cutting edges.
8. by the Mixed drilling bit of claim 6 or 7 described reinforcement heart section cutting functions, it is characterized in that described gear wheel is insert cone, described movable cutting teeth is made by carbide alloy or polycrystalline diamond, or is composited by carbide alloy and polycrystalline diamond.
9. by the Mixed drilling bit of claim 1 or 2 described reinforcement heart section cutting functions, it is characterized in that the rotation of described gear wheel becomes 30 ° ~ 70 ° angles with the rotation of bit body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552556.2A CN103015899B (en) | 2012-12-19 | 2012-12-19 | A kind of Mixed drilling bit strengthening heart portion cutting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552556.2A CN103015899B (en) | 2012-12-19 | 2012-12-19 | A kind of Mixed drilling bit strengthening heart portion cutting function |
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| Publication Number | Publication Date |
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| CN103015899A true CN103015899A (en) | 2013-04-03 |
| CN103015899B CN103015899B (en) | 2015-07-29 |
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| CN201210552556.2A Active CN103015899B (en) | 2012-12-19 | 2012-12-19 | A kind of Mixed drilling bit strengthening heart portion cutting function |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113995A (en) * | 2015-08-10 | 2015-12-02 | 宝鸡石油机械有限责任公司 | Composite drill bit with core rock breaking capability improved |
| CN106014266A (en) * | 2016-08-02 | 2016-10-12 | 西南石油大学 | Disc cutter type multiple drill bit suitable for hard-to-drill stratum |
| CN106285490A (en) * | 2016-08-30 | 2017-01-04 | 宝鸡石油机械有限责任公司 | A kind of gear wheel is arranged in the composite drill bit on wing |
| CN106968595A (en) * | 2017-04-27 | 2017-07-21 | 刘哲岳 | Impact type continuously engages the multi-faceted efficient Mixed drilling bit of cutting |
| CN107747473A (en) * | 2017-11-16 | 2018-03-02 | 中石化江钻石油机械有限公司 | A kind of insert cone Mixed 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 |
| CN107975341A (en) * | 2017-10-25 | 2018-05-01 | 中国石油天然气股份有限公司 | The installation method of drill hammer tooth, drill hammer and drill hammer tooth |
| CN108500001A (en) * | 2018-03-19 | 2018-09-07 | 福建工程学院 | A kind of cement bunker library clearing machine spiral cutter head |
| CN109667545A (en) * | 2019-03-03 | 2019-04-23 | 兰州城市学院 | A kind of gear wheel PDC two-stage cutting composite drill bit |
| CN109898998A (en) * | 2019-03-03 | 2019-06-18 | 兰州城市学院 | A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row |
| CN110792397A (en) * | 2019-12-11 | 2020-02-14 | 西南石油大学 | Composite drill bit |
| CN113167103A (en) * | 2017-11-09 | 2021-07-23 | 通用电气(Ge)贝克休斯有限责任公司 | Earth-boring tools with fixed blades and variable-size rotatable cutting structures and related methods |
| US11255128B2 (en) | 2020-01-23 | 2022-02-22 | Saudi Arabian Oil Company | Drilling boreholes with a hybrid bit |
| US11268325B2 (en) | 2020-03-31 | 2022-03-08 | Saudi Arabian Oil Company | Directional drilling |
| US11473813B2 (en) | 2020-05-13 | 2022-10-18 | Saudi Arabian Oil Company | Well completion converting a hydrocarbon production well into a geothermal well |
| US11599955B2 (en) | 2021-01-04 | 2023-03-07 | Saudi Arabian Oil Company | Systems and methods for evaluating and selecting completion equipment using a neural network |
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Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105113995A (en) * | 2015-08-10 | 2015-12-02 | 宝鸡石油机械有限责任公司 | Composite drill bit with core rock breaking capability improved |
| CN106014266A (en) * | 2016-08-02 | 2016-10-12 | 西南石油大学 | Disc cutter type multiple drill bit suitable for hard-to-drill stratum |
| CN106014266B (en) * | 2016-08-02 | 2019-05-10 | 西南石油大学 | A kind of dise knife formula composite drill bit suitable for bad ground |
| CN106285490A (en) * | 2016-08-30 | 2017-01-04 | 宝鸡石油机械有限责任公司 | A kind of gear wheel is arranged in the composite drill bit on wing |
| CN106968595B (en) * | 2017-04-27 | 2019-04-26 | 刘哲岳 | Impact type continuously engages the multi-faceted efficient Mixed drilling bit of cutting |
| CN106968595A (en) * | 2017-04-27 | 2017-07-21 | 刘哲岳 | Impact type continuously engages the multi-faceted efficient Mixed drilling bit of cutting |
| CN107975341A (en) * | 2017-10-25 | 2018-05-01 | 中国石油天然气股份有限公司 | The installation method of drill hammer tooth, drill hammer and drill hammer tooth |
| CN107975341B (en) * | 2017-10-25 | 2019-07-09 | 中国石油天然气股份有限公司 | The installation method of drill hammer tooth, drill hammer and drill hammer tooth |
| CN113167103B (en) * | 2017-11-09 | 2024-01-19 | 通用电气(Ge)贝克休斯有限责任公司 | Earth-boring tools having fixed blades and variable-size rotatable cutting structures and related methods |
| CN113167103A (en) * | 2017-11-09 | 2021-07-23 | 通用电气(Ge)贝克休斯有限责任公司 | Earth-boring tools with fixed blades and variable-size rotatable cutting structures and related methods |
| CN107747473B (en) * | 2017-11-16 | 2024-04-16 | 中石化江钻石油机械有限公司 | Insert cone hybrid bit |
| CN107747473A (en) * | 2017-11-16 | 2018-03-02 | 中石化江钻石油机械有限公司 | A kind of insert cone Mixed drilling bit |
| WO2019095992A1 (en) * | 2017-11-16 | 2019-05-23 | 中石化江钻石油机械有限公司 | Hybrid drill bit provided with inserted-tooth cones |
| CN107905737B (en) * | 2017-12-21 | 2021-07-27 | 中石化江钻石油机械有限公司 | Three-stage cutting insert cone hybrid bit |
| WO2019119987A1 (en) * | 2017-12-21 | 2019-06-27 | 中石化江钻石油机械有限公司 | Insert cone hybrid bit |
| US11326402B2 (en) | 2017-12-21 | 2022-05-10 | Kingdream Public Limited Company | Hybrid bit with roller cones having inserts |
| 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 |
| CN108500001A (en) * | 2018-03-19 | 2018-09-07 | 福建工程学院 | A kind of cement bunker library clearing machine spiral cutter head |
| CN108500001B (en) * | 2018-03-19 | 2020-12-01 | 福建工程学院 | Spiral tool bit of cement silo cleaning machine |
| CN109898998A (en) * | 2019-03-03 | 2019-06-18 | 兰州城市学院 | A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row |
| CN109667545A (en) * | 2019-03-03 | 2019-04-23 | 兰州城市学院 | A kind of gear wheel PDC two-stage cutting composite drill bit |
| CN110792397A (en) * | 2019-12-11 | 2020-02-14 | 西南石油大学 | Composite drill bit |
| US11255128B2 (en) | 2020-01-23 | 2022-02-22 | Saudi Arabian Oil Company | Drilling boreholes with a hybrid bit |
| US11268325B2 (en) | 2020-03-31 | 2022-03-08 | Saudi Arabian Oil Company | Directional drilling |
| US11674718B2 (en) | 2020-05-13 | 2023-06-13 | Saudi Arabian Oil Company | Well completion converting a hydrocarbon production well into a geothermal well |
| US11473813B2 (en) | 2020-05-13 | 2022-10-18 | Saudi Arabian Oil Company | Well completion converting a hydrocarbon production well into a geothermal well |
| US11599955B2 (en) | 2021-01-04 | 2023-03-07 | Saudi Arabian Oil Company | Systems and methods for evaluating and selecting completion equipment using a neural network |
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Address after: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: Jianghan Petroleum Drilling Bit Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180223 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 OILFIELD EQUIPMENT CORPORATION |