CN213980646U - PDC compound drill - Google Patents
PDC compound drill Download PDFInfo
- Publication number
- CN213980646U CN213980646U CN202021931874.6U CN202021931874U CN213980646U CN 213980646 U CN213980646 U CN 213980646U CN 202021931874 U CN202021931874 U CN 202021931874U CN 213980646 U CN213980646 U CN 213980646U
- Authority
- CN
- China
- Prior art keywords
- section
- conical
- tooth
- drill bit
- cone
- 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.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
本实用新型涉及钻头技术领域，是一种PDC复合式钻头，包括钻头本体、主刀翼和牙轮分装件，钻头本体上端沿圆周间隔均布有至少两个主刀翼，主刀翼沿冠部轮廓由内向外依次划分为内锥段、鼻部、肩部、外锥段和保径部，每个主刀翼上均沿内锥段、鼻部、肩部和外锥段依次分布有切削齿。本实用新型结构合理，其通过设置牙轮和圆锥尖顶齿能使其在钻进时对地层进行预破碎，释放地层应力，由此可提高切削齿的破岩效率，并对切削齿形成保护，减少磨损，在钻进过程中，牙轮和圆锥尖顶齿还能分担部分冲击载荷，减轻地层对切削齿的冲击载荷，能够使本实用新型在定向段保持高效稳定，井眼质量好且不易卡钻。
The utility model relates to the technical field of drill bits, which is a PDC composite drill bit, which comprises a drill bit body, a main blade and a cone subassembly. The upper end of the bit body is evenly spaced with at least two main blades along the circumference, and the main blades are along the contour of the crown. It is divided into inner cone section, nose section, shoulder section, outer cone section and gauge section in turn from inside to outside. Cutting teeth are distributed along the inner cone section, nose, shoulder and outer cone section on each main blade. The utility model has a reasonable structure, and can pre-break the stratum during drilling by arranging cones and conical apex teeth, so as to release the stratum stress, thereby improving the rock-breaking efficiency of the cutting teeth and forming protection for the cutting teeth. Reduce wear, in the drilling process, the cone and the conical tip teeth can also share part of the impact load, reduce the impact load of the formation on the cutting teeth, can keep the utility model efficient and stable in the directional section, the wellbore quality is good and not easy to jam drill.
Description
Technical Field
The utility model relates to a drill bit technical field is a PDC combined type drill bit.
Background
In a large-inclination directional well, sliding drilling is needed for controlling a well track, but due to the fact that friction resistance torque of a large-inclination directional well section is large, when a conventional PDC drill bit is adopted for sliding drilling, the problems that pressure release is serious, drilling pressure transmission is not stable, a tool face is difficult to control and the like exist, if a roller bit is adopted for drilling, due to the fact that the drilling rotating speed is high when a screw rod and a rotary table are used for drilling, a well implementing section is short, roller accidents are prone to occurring, and the drilling speed of the large-inclination directional well is limited; the above problems can be solved by using rotary steerable drilling techniques, but at high cost. The speed of the drilling speed has great influence on the quality improvement and efficiency enhancement of oil fields and high-efficiency exploration and development, the drilling speed is improved, the requirement of continuous increase of petroleum yield is met by improving the production efficiency, and the requirement is not only the requirement of improving the benefit of each oil field company, so that the research and the application of the PDC roller cone composite drill bit have urgent necessity, but also the requirement of continuous development of the petroleum exploration and development.
Disclosure of Invention
The utility model provides a PDC combined type drill bit has overcome above-mentioned prior art not enough, and it can effectively solve current PDC drill bit problem of inefficiency when directional well section of big inclination is bored.
The technical scheme of the utility model is realized through following measure: a PDC composite drill bit comprises a drill bit body, main blades and a cone sub-assembly piece, wherein at least two main blades are uniformly distributed at the upper end of the drill bit body at intervals along the circumference, the main blades are sequentially divided into an inner cone section, a nose section, a shoulder section, an outer cone section and a gauge protection section from inside to outside along the outline of a crown portion, cutting teeth are sequentially distributed on each main blade along the inner cone section, the nose section, the shoulder section and the outer cone section, inverted-cut teeth are arranged at the bottom of the gauge protection section of each main blade, gauge protection teeth are arranged on the gauge protection section of each main blade corresponding to the position above the inverted-cut teeth, tooth tops of the cutting teeth, the inverted-cut teeth and the gauge protection teeth are all positioned on the cutting side edge of each main blade, a plurality of conical pointed top teeth are uniformly distributed on the outer side surface of the nose section of each main blade, the cone sub-assembly piece is arranged on the drill bit body corresponding to the position between every two adjacent main blades, and comprises a cone palm and a cone, the lower end of the bit leg is fixedly connected with the bit body or integrally formed, the cone is rotatably installed on the outer side of the shaft neck at the upper end of the bit leg, the tooth crest on the cone is higher than the tooth crest of the conical tip top tooth, and the tooth crest of the conical tip top tooth is higher than the tooth crest of the cutting tooth.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the drill bit body can be provided with three main blades at intervals along the circumference, directional nozzles are uniformly distributed on the drill bit body corresponding to the position between every two main blades, vertical jet nozzles are uniformly distributed on the drill bit body corresponding to the position between the inner conical sections of every two main blades, and the jet flow area of each vertical jet nozzle can cover all cutting teeth arranged at the inner conical sections of the main blades.
The above-mentioned bit body that corresponds position between two main wing internal cone sections all can distribute the perpendicular jet nozzle hole of inside and outside intercommunication, and the sealed spiro union in perpendicular jet nozzle hole in perpendicular jet nozzle lower part outside, the upper end of perpendicular jet nozzle is higher than bit body top and difference in height between 1mm to 10mm, and perpendicular jet nozzle central authorities have big-end-up's toper passageway, and the diameter of passageway upper end is between 8mm to 11 mm.
The cutting tooth can comprise a first cylindrical section and a tooth edge section, one end of the first cylindrical section forms a spherical crown-shaped bulge, the other end of the first cylindrical section is fixedly connected with the tooth edge section in a cutter edge shape, the connection part of the first cylindrical section and the tooth edge section in the cutter edge shape is in a smooth transition shape, the cutter point of each tooth edge section is perpendicular to the tangent line of the profile of the crown part of the main cutter wing at the corresponding position, and the gauge protection tooth is in a semi-cylindrical shape.
The conical pointed top teeth can comprise a second cylindrical section and a conical column section, the bottom end of the conical column section is connected with the top end of the second cylindrical section, the joint of the bottom end of the conical column section and the top end of the second cylindrical section is in a smooth transition shape, the conical column section is an arc-shaped conical revolving body for a bus, and a composite layer is arranged on the outer side of the pointed portion of the conical column section.
The distance between the top of the conical tip tooth cone section and the top of the cutting tooth blade section can be between 0.3mm and 2 mm.
A plurality of side teeth can be distributed on one side of the bit leg, which is far away from the bit body, in a vertically staggered manner, the tooth tops of all the side teeth are lower than the circumferential surface of the main blade, and the height difference is between 0.8mm and 1.2 mm.
The utility model discloses rational in infrastructure, it enables it and carries out the breakage in advance to the stratum when creeping into through setting up gear wheel and conical point apical tooth, releases stratum stress, can improve the broken rock efficiency of cutting tooth from this to form the protection to the cutting tooth, reducing wear creeps into the in-process, and gear wheel and conical point apical tooth can also share part impact load, alleviates the stratum and to the impact load of cutting tooth, can make the utility model discloses keep high-efficient stable at directional section, well is of high quality and difficult sticking to bore.
Drawings
Fig. 1 is a schematic perspective view of a preferred embodiment of the present invention.
Fig. 2 is a schematic top view of the preferred embodiment of the present invention.
Fig. 3 is a schematic view of the main blade profile of fig. 1 along the crown profile.
Fig. 4 is a front sectional enlarged structural schematic view of the conical pointed tip tooth of fig. 1.
FIG. 5 is an enlarged top view of the cutting tooth of FIG. 1.
Fig. 6 is a front sectional enlarged structural view of the vertical flow nozzle of fig. 1.
The codes in the figures are respectively: the drill bit comprises a drill bit body 1, a main blade 2, a bit leg 3, a cone 4, a first cylindrical section 5, a tooth edge section 6, a vertical jet nozzle 7, an inverted-reaming tooth 8, a directional nozzle 9, a second cylindrical section 10, a conical cylindrical section 11, a composite layer 12, a gauge tooth 13, a side tooth 14 and a flow channel 15.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the direction a in the attached drawing 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in the attached figures 1, 2, 3, 4 and 5, the PDC composite drill bit comprises a drill bit body 1, main blades 2 and a cone sub-assembly, wherein at least two main blades 2 are uniformly distributed at intervals along the circumference at the upper end of the drill bit body 1, the main blades 2 are sequentially divided into an inner cone section, a nose section, a shoulder section, an outer cone section and a gauge section from inside to outside along the profile of a crown portion, cutting teeth are sequentially distributed on each main blade 2 along the inner cone section, the nose section, the shoulder section and the outer cone section, an inverted-cut eye tooth 8 is arranged at the bottom of the gauge section of each main blade 2, gauge teeth 13 are arranged on the gauge section of each main blade 2 corresponding to the position above the inverted-cut eye teeth 8, the tooth crests of the inverted-cut eye teeth 8 and the gauge teeth 13 are all positioned on the cutting side edges of each main blade 2, a plurality of cone tip top teeth are uniformly distributed on the outer side surface of the nose section of each main blade 2, the cone sub-assembly is arranged on the drill bit body 1 corresponding to the position between every two adjacent main blades 2, the cone sub-assembly comprises a cone leg 3 and a cone 4, the lower end of the cone leg 3 is fixedly connected with the bit body 1 or integrally formed, the cone 4 is rotatably installed on the outer side of a shaft neck at the upper end of the cone leg 3, the tooth crest on the cone 4 is higher than the tooth crest of the conical tip top tooth, and the tooth crest of the conical tip top tooth is higher than the tooth crest of the cutting tooth.
The gauge teeth 13 may be reinforced teeth (lengthened and encrypted) as required. In the use, because the addendum on gear wheel 4 is higher than the addendum of circular cone point apical tooth, consequently at the drilling operation in-process, gear wheel 4 preferentially eats the stratum, carry out the breakage in advance to the bottom, release stratum stress, improve the broken rock efficiency of three wing, the wing can be stabilized and the shock attenuation to circular cone point apical tooth, the stability of drill bit in the shaft bottom has been improved, greatly reduced the drill bit decompression is serious, the uneven factor of weight-on-bit transmission, because the addendum of circular cone point apical tooth is higher than the addendum of cutting tooth, therefore, circular cone point apical tooth will preferentially eat the stratum, carry out the breakage to the stratum, form the protection to the cutting tooth, reduce the wearing and tearing in the drilling operation in-process, improve the utility model discloses a life and cutting efficiency. The utility model discloses rational in infrastructure, it enables it and carries out the breakage in advance to the stratum when creeping into through setting up gear wheel 4 and circular cone sharp apical tooth, releases stratum stress, can improve the broken rock efficiency of cutting tooth from this to forming the protection to the cutting tooth, reducing wear creeps into the in-process, and gear wheel 4 and circular cone sharp apical tooth can also share partial impact load, alleviate the impact load of stratum to the cutting tooth, can make the utility model discloses keep high-efficient stable at directional section, well is of high quality and difficult sticking to bore.
The PDC composite drill bit can be further optimized or/and improved according to actual needs:
as shown in fig. 1, 2, 3, 4, 5 and 6, three main blades 2 are circumferentially distributed on the drill body 1 at intervals, directional nozzles 9 are uniformly distributed on the drill body 1 corresponding to the position between every two main blades 2, vertical jet nozzles 7 are uniformly distributed on the drill body 1 corresponding to the position between the inner cone sections of every two main blades 2, and the jet flow area of the vertical jet nozzles 7 can cover all the cutting teeth arranged at the inner cone sections of the main blades 2.
In the use, because the utility model discloses can accelerate under high rotational speed state during the operation the utility model discloses creep into the heat that the in-process produced, can play good cooling effect to the cutting tooth of the interior cone section department of all main wing of a knife 2 and the interior cone section of main wing of a knife 2 through setting up perpendicular jet nozzle 7, further reduce its wearing and tearing in the course of the work, prolong its life, directional nozzle 9 and perpendicular jet nozzle 7's combination setting can greatly reduced drill bit mud bag risk, make the detritus can not pile up in drill bit main wing of a knife 2, can make the utility model discloses keep high-efficient stable at directional section, well is of high quality and be difficult for sticking to bore and mud bag.
As shown in the attached figures 1, 2, 3, 4, 5 and 6, vertical jet nozzle holes which are communicated with the inside and the outside are uniformly distributed on the drill bit body 1 corresponding to the position between the inner cone sections of the two main blades 2, the outer side of the lower part of the vertical jet nozzle 7 is hermetically screwed in the hole of the vertical jet nozzle 7, the upper end of the vertical jet nozzle 7 is higher than the top of the drill bit body 1, the height difference is between 1mm and 10mm, the center of the vertical jet nozzle 7 is provided with a conical channel which is small at the top and big at the bottom, and the diameter of the upper end of the channel is between 8.
According to the demand, perpendicular jet nozzle 7's upper end is higher than 1 top of drill bit body and the discrepancy in elevation is 10mm, in the use, through such setting, can avoid the detritus to pile up in 1 main wing of a knife 2 of drill bit body, reduces 1 mud bag risk of drill bit body, and the diameter of passageway upper end is between 8mm to 11mm, can make the broken rock of water conservancy and drill bit chip removal effect reach the optimum.
As shown in fig. 1, 2, 3 and 5, the cutting tooth includes a first cylindrical section 5 and a tooth edge section 6, one end of the first cylindrical section 5 forms a convex of a spherical crown shape, the other end of the first cylindrical section 5 is fixedly connected with the tooth edge section 6 of a blade shape, the connection part of the two is in a smooth transition shape, the blade tip of each tooth edge section 6 is perpendicular to the tangent line of the crown profile of the main blade 2 at the corresponding position, and the gauge tooth 13 is in a semi-cylindrical shape.
In the use, the cutting teeth breaks the stratum earlier when participating in the cutting through the tooth sword section 6 of sword form, then is carrying out subsequent cutting, has a breakage in advance to the stratum in other words, can improve the stability of drill bit, reduces vibrations, improves the utility model discloses a cutting efficiency. One end of the first cylindrical section 5 forms a spherical crown-shaped protrusion for being conveniently embedded on the main blade 2.
As shown in fig. 1, 2, 3, and 4, the conical pointed tooth includes a second cylindrical section 10 and a conical column section 11, the bottom end of the conical column section 11 is connected with the top end of the second cylindrical section 10, and the joint between the two is in a smooth transition shape, the conical column section 11 is a conical revolving body with a curved generatrix, and a composite layer 12 is arranged on the outer side of the pointed portion of the conical column section 11.
The composite layer 12 may be a PDC layer, as desired; the outer side of the lower end of the second cylindrical section 10 can be provided with a chamfer so as to be conveniently embedded on the drill bit body 1. In the use, through such setting, can reduce the stress concentration of circular cone apical tooth, prolong its life, the design of composite bed 12 can make it further satisfy the operation demand of creeping into, reduces the wearing and tearing to circular cone apical tooth such as rock, and helps reducing rock and the friction of circular cone apical tooth and lead to the problem of easy wearing and tearing under the high temperature that tooth head, tooth point high temperature caused to can improve the wearability of circular cone apical tooth, further prolong the utility model discloses life.
As shown in fig. 1, 2, 3 and 4, the distance between the top of the conical pointed tooth cone section 11 and the top of the cutting tooth edge section 6 is between 0.3mm and 2 mm.
In the use, through such setting, can satisfy the broken rock degree of depth of circular cone pinnacle tooth, play good guard action to the cutting tooth.
As shown in fig. 1 and 2, a plurality of side teeth 14 are vertically and alternately distributed on one side of the bit leg 3 away from the bit body 1, the tooth tops of the side teeth 14 are lower than the circumferential surface of the main blade 2, and the height difference is between 0.8mm and 1.2 mm.
According to the demand, the tooth top of every side tooth 14 all is less than the periphery and the discrepancy in height of main wing 2 and is 1mm, and side tooth 14 can be for strengthening the tooth (extension, encryption), can prevent under high rotational speed and the high drilling speed the utility model discloses a gauge tooth 13 wearing and tearing and cause the well to reduce, stability when still helping the drill bit to bore and keep the well size. In the use, through such setting, can protect bit leg 3 and guarantor's footpath tooth 13, prolong the utility model discloses a life.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (10)
1. A PDC composite drill bit is characterized by comprising a drill bit body, main blades and a cone sub-assembly piece, wherein at least two main blades are uniformly distributed at the upper end of the drill bit body at intervals along the circumference, the main blades are sequentially divided into an inner cone section, a nose section, a shoulder section, an outer cone section and a gauge protection section from inside to outside along the outline of a crown, cutting teeth are sequentially distributed on each main blade along the inner cone section, the nose section, the shoulder section and the outer cone section, inverted-cut teeth are arranged at the bottom of the gauge protection section of each main blade, gauge protection teeth are arranged on the gauge protection section of each main blade corresponding to the position above the inverted-cut teeth, the cutting teeth, the inverted-cut teeth and the gauge protection teeth are all positioned on the cutting side edge of each main blade, a plurality of cone tip top teeth are uniformly distributed on the outer side surface of the nose section of each main blade, the cone sub-cut piece corresponding to the position between every two adjacent main blades is provided with the cone sub-assembly piece, and the cone sub-assembly piece comprises a cone palm and a cone sub-assembly piece, the lower end of the bit leg is fixedly connected with the bit body or integrally formed, the cone is rotatably installed on the outer side of the shaft neck at the upper end of the bit leg, the tooth crest on the cone is higher than the tooth crest of the conical tip top tooth, and the tooth crest of the conical tip top tooth is higher than the tooth crest of the cutting tooth.
2. The PDC composite drill bit of claim 1, wherein the drill bit body is circumferentially and alternately provided with three main blades, the drill bit body corresponding to a position between every two main blades is evenly provided with directional nozzles, the drill bit body corresponding to a position between inner conical sections of every two main blades is evenly provided with vertical jet nozzles, and a jet flow area of the vertical jet nozzles can cover all cutting teeth arranged at the inner conical sections of the main blades.
3. The PDC composite drill bit of claim 2, wherein vertical jet nozzle holes communicated with each other are uniformly distributed on the drill bit body corresponding to a position between the inner conical sections of the two main blades, the outer side of the lower portion of each vertical jet nozzle is hermetically screwed in the corresponding vertical jet nozzle hole, the upper end of each vertical jet nozzle is higher than the top of the drill bit body, the height difference is 1mm to 10mm, a conical channel with a small upper portion and a large lower portion is arranged in the center of each vertical jet nozzle, and the diameter of the upper end of each channel is 8mm to 11 mm.
4. The PDC composite drill bit of claim 1, 2 or 3, wherein the cutting teeth comprise a first cylindrical section and a tooth edge section, one end of the first cylindrical section forms a spherical crown-shaped protrusion, the other end of the first cylindrical section is fixedly connected with the blade-shaped tooth edge section, the connection part of the first cylindrical section and the blade-shaped tooth edge section is in a smooth transition shape, the cutting tip of each tooth edge section is perpendicular to the tangent line of the profile of the crown part of the main blade at the corresponding position, and the gauge teeth are in a semi-cylindrical shape.
5. The PDC composite drill bit of claim 1, 2 or 3, wherein the conical pointed top teeth include a second cylindrical section and a conical cylindrical section, a bottom end of the conical cylindrical section is connected with a top end of the second cylindrical section, a connection portion of the conical cylindrical section and the second cylindrical section is in a smooth transition shape, the conical cylindrical section is a conical revolving body with an arc-shaped generatrix, and a composite layer is arranged on an outer side of a tip portion of the conical cylindrical section.
6. The PDC composite drill bit of claim 4, wherein the conical pointed apical tooth includes a second cylindrical section and a conical cylindrical section, a bottom end of the conical cylindrical section is connected with a top end of the second cylindrical section, a connection portion of the conical cylindrical section and the second cylindrical section is in a smooth transition shape, the conical cylindrical section is a conical revolving body with an arc-shaped generatrix, and a composite layer is arranged outside a tip portion of the conical cylindrical section.
7. The PDC composite drill bit of claim 5 wherein the spacing between the top of the conical pointed cone section and the top of the cutting tooth blade section is between 0.3mm and 2 mm.
8. The PDC composite drill bit of claim 6 wherein the spacing between the top of the conical pointed cone section and the top of the cutting tooth blade section is between 0.3mm and 2 mm.
9. The PDC composite bit according to claim 1 or 2 or 3 or 6 or 7 or 8, wherein a plurality of side teeth are vertically and alternately distributed on one side of the bit leg away from the bit body, the crest of each side tooth is lower than the circumferential surface of the main blade, and the height difference is between 0.8mm and 1.2 mm.
10. The PDC composite drill bit of claim 5 wherein a plurality of side teeth are staggered from top to bottom on a side of the bit leg away from the bit body, and each of the side teeth has a crest that is lower than a circumferential surface of the main blade and a height difference of 0.8mm to 1.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021931874.6U CN213980646U (en) | 2020-09-07 | 2020-09-07 | PDC compound drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021931874.6U CN213980646U (en) | 2020-09-07 | 2020-09-07 | PDC compound drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213980646U true CN213980646U (en) | 2021-08-17 |
Family
ID=77254421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021931874.6U Active CN213980646U (en) | 2020-09-07 | 2020-09-07 | PDC compound drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213980646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839209A (en) * | 2022-12-06 | 2023-03-24 | 中石化江钻石油机械有限公司 | Multi-directional flow mixing drill bit |
-
2020
- 2020-09-07 CN CN202021931874.6U patent/CN213980646U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839209A (en) * | 2022-12-06 | 2023-03-24 | 中石化江钻石油机械有限公司 | Multi-directional flow mixing drill bit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106437525B (en) | A kind of composite drill bit suitable for bad ground | |
| CN108952582A (en) | PDC drill bit suitable for double pendulum speed-raising drilling tool | |
| CN205532305U (en) | Rotatable PDC drill bit of cutting teeth | |
| CN105507817A (en) | Hybrid drill bit with anti-tracking features | |
| CN206129165U (en) | Diamond drill bit | |
| WO2013029347A1 (en) | Composite bit with rotary cut rock-breaking function | |
| CN108625788A (en) | A kind of novel pdc, gear wheel composite drill bit | |
| CN106089086B (en) | A long-life reaming bit for difficult-to-drill formations | |
| CN115717509A (en) | A PDC drill bit with double-sequence arrangement of large and small teeth | |
| CN106089087A (en) | A kind of die-cut composite drill bit being applicable to bad ground | |
| CN109057715A (en) | A kind of compound PDC speed-raising drill bit cutting hardpan | |
| CN208885190U (en) | A kind of Mixed drilling bit with plow tooth | |
| CN205876191U (en) | Composite drill bit suitable for bad ground | |
| CN116517475B (en) | Novel wear-resistant and anti-collision beak-shaped tooth multi-blade PDC drill bit | |
| CN107905737A (en) | A kind of three-level cuts insert cone Mixed drilling bit | |
| CN206000471U (en) | A kind of preventing sticking PDC drill bit | |
| CN206220857U (en) | A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock | |
| CN208718574U (en) | PDC drill bit suitable for double pendulum speed-raising drilling tool | |
| CN206769814U (en) | A kind of big landwaste, low-power consumption diamond bit | |
| CN203701989U (en) | Spiral cutter blade steel body PDC drill bit | |
| CN119711948B (en) | Impact composite drill bit | |
| CN212508083U (en) | Wear-resisting mixed drill bit that reinforces of gauge diameter | |
| CN112145087B (en) | PDC composite bit of cone | |
| CN113107371A (en) | Self-excitation shaft-impacting and induced unloading coupling rock breaking drill bit and drilling speed increasing method | |
| CN212689927U (en) | Roller cone indentation type single roller cone and PDC composite drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220105 Address after: 834000 No. 2500-1, Ping An Avenue, baijianwei District, Karamay City, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang beiken Chemical Co.,Ltd. Patentee after: Xinjiang Beiken Energy Engineering Stock Co.,Ltd. Address before: 834009 No.91, menmen Road, Baijiantan District, Karamay City, Xinjiang Uygur Autonomous Region Patentee before: Xinjiang Beiken Energy Engineering Stock Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 834000 No. 2500-1, Ping An Avenue, baijianwei District, Karamay City, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang beiken Chemical Co.,Ltd. Country or region after: China Patentee after: Beiken Energy Holdings Group Co.,Ltd. Address before: 834000 No. 2500-1, Ping An Avenue, baijianwei District, Karamay City, Xinjiang Uygur Autonomous Region Patentee before: Xinjiang beiken Chemical Co.,Ltd. Country or region before: China Patentee before: Xinjiang Beiken Energy Engineering Stock Co.,Ltd. |