CN212867420U - Ridge tooth back reaming anti-sticking drill bit - Google Patents
Ridge tooth back reaming anti-sticking drill bit Download PDFInfo
- Publication number
- CN212867420U CN212867420U CN202021901684.XU CN202021901684U CN212867420U CN 212867420 U CN212867420 U CN 212867420U CN 202021901684 U CN202021901684 U CN 202021901684U CN 212867420 U CN212867420 U CN 212867420U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- tooth
- back reaming
- section
- teeth
- 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
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a roof ridge tooth back reaming anti-sticking drill bit, including the drill bit body, the anterior segment of drill bit body is equipped with along a plurality of guarantor footpath sections that circumference distributes, and the front end of guarantor footpath section is equipped with the wing, and the back end of guarantor footpath section reduces gradually by preceding to the back for back reaming section and its external diameter, is equipped with the back reaming tooth on the back reaming section, and the back reaming tooth includes the roof ridge tooth, and the surface of back reaming section is evagination circular arc surface. The utility model discloses a regard roof ridge tooth as whole or some of back reaming tooth, the crest of roof ridge tooth is broken rock in advance, with the extrusion, the broken rock mode of shearing is more laborsaving, the ability of the broken detritus of tangential is stronger, the broken ability of falling the piece has been improved, the surface design with the back reaming section is evagination circular arc shaped surface, the frictional resistance of piece and drill bit is fallen at the play drilling in-process to the drill bit has been reduced, the speed of getting up of drill bit when playing the brill has been improved on the whole, the anti-sticking brill ability of drill bit has effectively been improved, can also effectively restore the wall of a well at the play drilling in-process, the smoothness of getting up the brill has been improved.
Description
Technical Field
The utility model relates to a drill bit for oil and gas drilling especially relates to a roof ridge tooth anti-sticking drill bit of reaming that falls.
Background
The drilling engineering is an important link in the process of oil and gas exploitation, and because the whole drilling engineering is carried out below the ground, constructors cannot directly observe the underground real drilling condition, need to judge according to various drilling parameter changes and by combining the working experience of the constructors, and have certain subjectivity, the incidence rate of various underground accidents in the drilling process is increased. The drilling sticking accident is one of the most common engineering accidents in the petroleum drilling process, the occurrence rate is high, the post-treatment process is slow and complex, the normal operation of the drilling engineering is greatly influenced, the construction period and the cost are increased, and the drilling construction speed is influenced.
At present PDC drill bit commonly used, the undercut tooth on the undercut section at its gage section rear portion all compares singlely, and the overwhelming majority all adopts single plane tooth as the undercut tooth, and the surface shape of undercut section all adopts single inclined plane and connects the cylinder section to pass through, lacks necessary anti-sticking and bores the design element, and this kind of design can make and lack sufficient cutting force when the tripping operation and restore anomalous wall of a well, lacks anti-sticking and bores the ability, causes the sticking accident easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a roof ridge tooth hole of drawing of falling anti-sticking drill bit that can effectively improve anti-sticking ability just for solving above-mentioned problem.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the utility model provides a roof ridge tooth undercut anti-sticking drill bit, includes the drill bit body, the anterior segment of drill bit body is equipped with a plurality of guarantor footpath sections that distribute along circumference, and is a plurality of the circumference diameter that guarantor footpath section encloses is greater than the back end diameter of drill bit body, the front end of guarantor footpath section is equipped with the wing, the rear end of drill bit body is equipped with the joint, the back end of guarantor footpath section reduces by preceding to back gradually for undercut section and its external diameter, be equipped with the undercut tooth on the undercut section, the undercut tooth includes the roof ridge tooth, the surface of undercut section is evagination circular arc surface. The ridge tooth refers to a cutting tooth with a ridge-like shape formed in the middle part of the cutting end surface higher than the two sides.
Preferably, in order to improve the anti-jamming capability, the back-reaming teeth on each back-reaming section are two rows, the rotation direction of the drill bit is set to rotate from the tail to the head, the back-reaming teeth on the head row are roof ridge teeth, and the back-reaming teeth on the tail row are plane teeth or conical sharp teeth. The plane tooth refers to a cutting tooth with a plane cutting end surface; the conical tip is a cutting tooth with the middle part of the cutting end surface higher than the periphery to form a shape similar to a conical tip.
Specifically, each row of the ridge teeth is 2-4.
Specifically, the cutting section of the roof ridge tooth is a PDC, a pregnant insert, a palas or a natural diamond.
Specifically, the ridge tooth undercut anti-sticking drill bit is a full-scale drilling PDC matrix drill bit, a full-scale drilling PDC steel body drill bit or a full-scale drilling impregnated drill bit, and the maximum diameter of the ridge tooth undercut anti-sticking drill bit is 4 '-26'.
Specifically, the diameter of the back reaming tooth is 8mm-19mm, and the length of the back reaming tooth is 8mm-16 mm.
Specifically, the convex arc-shaped surface is one section or is formed by connecting multiple sections.
The beneficial effects of the utility model reside in that:
the utility model discloses a regard roof ridge tooth as whole or some of back reaming tooth, the crest of roof ridge tooth is broken rock in advance, with the extrusion, the broken rock mode of shearing is more laborsaving, the ability of the broken detritus of tangential is stronger, the broken ability of falling the piece has been improved, the surface design of the section of back reaming is the convex surface of evagination, effectively increased and fallen the piece and pass through the ability, the frictional resistance that the piece and the drill bit were fallen to the drill bit at the in-process that plays the brill has been reduced, the speed of playing the brill when playing the brill has been improved on the whole, the anti-sticking brill ability of drill bit has effectively been improved, can also effectively restore the wall of a well at the in-process that plays the brill, can effectively carry out broken cutting to the piece etc. that drops that play the in-process produced.
Drawings
FIG. 1 is a front view of the ridge tooth back reaming anti-seize drill of the present invention;
fig. 2 is a partial enlarged view of the back reaming section of the back reaming anti-sticking drill bit of the roof ridge teeth.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2, the ridge tooth undercut anti-sticking drill bit of the present invention includes a drill bit body 4, a plurality of gauge sections 5 distributed along the circumferential direction are provided on the front section (upper section in the drawing) of the drill bit body 4, the circumferential diameter enclosed by the gauge sections 5 is larger than the diameter of the rear section (lower section in the drawing) of the drill bit body 4, the front end of the gauge section 5 is provided with a blade 1, the blade 1 is provided with a cutting tooth 2, the rear end of the drill bit body 4 is provided with a joint 10, the rear section of the gauge section 5 is an undercut section 7, the outer diameter of the undercut section 7 is gradually reduced from front to back (from top to bottom in the drawing), the undercut section 7 is provided with undercut teeth, the undercut teeth include ridge teeth 8, and the outer surface of the undercut section 7 is an outer convex arc surface; preferably, the back reaming teeth on each back reaming section 7 are two rows, the rotation direction of the drill bit is set to rotate from the tail to the head, the back reaming teeth on the head row are roof ridge teeth 8, and the back reaming teeth on the tail row are plane teeth 6 (the plane teeth 6 can also be cone sharp teeth); each row of roof ridge teeth 8 is 2-4; the cutting section of the ridge tooth 8 is PDC, pregnant insert, palas or natural diamond; the ridge tooth undercut anti-sticking drill bit is a full-scale drilling PDC matrix drill bit, a full-scale drilling PDC steel body drill bit or a full-scale drilling impregnated drill bit, and the maximum diameter of the ridge tooth undercut anti-sticking drill bit is 4-26'; the diameter of the back reaming teeth is 8mm-19mm, and the length of the back reaming teeth is 8mm-16 mm; the convex arc surface is one section or is formed by connecting a plurality of sections. Also shown in fig. 1 are the port 3 in the bit body 4 and the shackle groove 9 in the rear section of the bit body 4, which are of conventional construction.
As shown in figure 1, when the joint 10 of the drill bit is used, the joint is connected with a drill rod, when the well drilling and the drilling are completed, ridge teeth 8 of the inverted reaming section 7 firstly crush crushed rocks in a rock crushing mode of extrusion and shearing and enable the crushed rocks to fall, the outward convex arc-shaped surface of the inverted reaming section 7 effectively increases the capacity of passing the fallen rocks, and the frictional resistance between the fallen rocks and the drill bit in the drilling and the drilling process is reduced, so that the drilling and the anti-jamming capacity are improved, the well wall can be effectively repaired in the drilling and the drilling smoothness is improved.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.
Claims (7)
1. The utility model provides a roof ridge tooth undercut anti-sticking drill bit, includes the drill bit body, the anterior segment of drill bit body is equipped with a plurality of guarantor footprints sections that distribute along circumference, and is a plurality of the circumference diameter that the guarantor footprints section encloses is greater than the back end diameter of drill bit body, the front end of guarantor footprints section is equipped with the wing of a knife, the rear end of drill bit body is equipped with the joint, the back end of guarantor footprints section reduces by preceding to back gradually for undercut section and its external diameter, be equipped with undercut tooth on the undercut section, its characterized in that: the undercut teeth comprise ridge teeth, and the outer surface of the undercut segment is a convex arc surface.
2. The roof tooth back reaming anti-seize drill bit of claim 1, characterized in that: the back reaming teeth on each back reaming section are two rows, the rotation direction of the drill bit is set to rotate from the tail to the head, the back reaming teeth on the head row are roof ridge teeth, and the back reaming teeth on the tail row are plane teeth or conical sharp teeth.
3. The roof tooth back reaming anti-seize drill bit of claim 2, characterized in that: and 2-4 ridge teeth are arranged in each row.
4. The roof ridge tooth back reaming anti-seize drill bit of claim 1, 2 or 3, wherein: the cutting section of the ridge tooth is PDC, pregnant insert, palas or natural diamond.
5. The roof ridge tooth back reaming anti-seize drill bit of claim 1, 2 or 3, wherein: the ridge tooth undercut anti-sticking drill bit is a PDC matrix drill bit which is fully drilled, a PDC steel body drill bit which is fully drilled or an impregnated drill bit which is fully drilled, and the maximum diameter of the ridge tooth undercut anti-sticking drill bit is 4 '-26'.
6. The roof ridge tooth back reaming anti-seize drill bit of claim 1, 2 or 3, wherein: the diameter of the back reaming teeth is 8mm-19mm, and the length of the back reaming teeth is 8mm-16 mm.
7. The roof ridge tooth back reaming anti-seize drill bit of claim 1, 2 or 3, wherein: the convex arc surface is one section or is formed by connecting a plurality of sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021901684.XU CN212867420U (en) | 2020-09-03 | 2020-09-03 | Ridge tooth back reaming anti-sticking drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021901684.XU CN212867420U (en) | 2020-09-03 | 2020-09-03 | Ridge tooth back reaming anti-sticking drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212867420U true CN212867420U (en) | 2021-04-02 |
Family
ID=75193992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021901684.XU Active CN212867420U (en) | 2020-09-03 | 2020-09-03 | Ridge tooth back reaming anti-sticking drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212867420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345115A (en) * | 2023-12-04 | 2024-01-05 | 中国石油大学(华东) | Drill bit with strong track control capability and high drilling efficiency under action of pushing force |
-
2020
- 2020-09-03 CN CN202021901684.XU patent/CN212867420U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345115A (en) * | 2023-12-04 | 2024-01-05 | 中国石油大学(华东) | Drill bit with strong track control capability and high drilling efficiency under action of pushing force |
| CN117345115B (en) * | 2023-12-04 | 2024-03-15 | 中国石油大学(华东) | Drill bit with strong track control capability and high drilling efficiency under action of pushing force |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4251109A (en) | Dust controlling method using a coal cutter bit | |
| CN105672887B (en) | The hybrid bit of old slot structure is followed with anti-drill bit | |
| CN102434105B (en) | Composite bit with rotary cut rock-breaking function | |
| CN205895148U (en) | Roll and protect footpath PDC drill bit | |
| CN212867420U (en) | Ridge tooth back reaming anti-sticking drill bit | |
| CN203145835U (en) | Combined multi-stage mud detritus crushing drill bit | |
| CN211230253U (en) | Anti-balling drill bit with conical teeth | |
| CN213627443U (en) | Polycrystalline diamond compact bit with butterfly-shaped cloth teeth | |
| CN105134084A (en) | PDC drilling bit with mixed pre-crushing tooth arrangement | |
| CN105643281A (en) | Drilling-milling composite-type circumferential nursery garden seedling root cutting tool bit | |
| CN202441259U (en) | Combined drill bit formed by rotary-cutting drill bit and cone drill bit | |
| CN104854299A (en) | Rock bit tip and rock bit | |
| CN212359634U (en) | Drill bit with anti-sticking bores structure | |
| CN214787199U (en) | High-speed rotary mud-removing oil well drill bit | |
| CN210598828U (en) | Novel tricone bit of oil and gas exploration exploitation | |
| CN204511309U (en) | Carbide drill tooth | |
| CN206903662U (en) | One kind is using mixing cloth tooth shield cutter made of big crystal grain hard alloy | |
| CN103046872B (en) | Combined multistage mud crushing drill | |
| CN202673157U (en) | Double-cone deflective wedge tooth | |
| CN2549158Y (en) | Spiral diameter retainng tricone bit | |
| CN212508090U (en) | NBC drill bit | |
| CN211573407U (en) | Roller bit with efficient cutting teeth | |
| CN214836120U (en) | Be used for mine drilling in pit bottom reamer bit that can shock attenuation | |
| CN109538115B (en) | Drilling method of prismatic drilling tool for deep well soft coal rock | |
| CN212508084U (en) | Insert cone and PDC (polycrystalline diamond compact) mixed drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |