CN203603766U - Mud drum resistant PDC drill bit with pit runner surface - Google Patents
Mud drum resistant PDC drill bit with pit runner surface Download PDFInfo
- Publication number
- CN203603766U CN203603766U CN201320738497.8U CN201320738497U CN203603766U CN 203603766 U CN203603766 U CN 203603766U CN 201320738497 U CN201320738497 U CN 201320738497U CN 203603766 U CN203603766 U CN 203603766U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- pit
- flow path
- mud drum
- path groove
- 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.)
- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 claims abstract description 30
- 210000002445 nipple Anatomy 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000011435 rock Substances 0.000 abstract description 6
- 239000012634 fragment Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 8
- 241001465754 Metazoa Species 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 241000254173 Coleoptera Species 0.000 description 1
- 241000241125 Gryllotalpa gryllotalpa Species 0.000 description 1
- 241000283966 Pholidota <mammal> Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a mud drum resistant PDC drill bit with the pit runner surface. The drill bit comprises a drill bit body, a screwed nipple connected with a drill rod is arranged on the lower portion of the drill bit body, a plurality of knife wings are arranged on the upper portion of the drill bit body, runner grooves of the drill bit are formed through troughs between the knife wings, all surfaces or a part of surfaces of the runner grooves are provided with pits. Compared with a conventional PDC drill bit, the mud drum resistant PDC drill bit with the pit runner surface has the advantages that adhesion of rock fragments to the runner grooves can be obviously reduced, blockage of runners is prevented, mud drum resistance is achieved, drilling efficiency of the drill bit is improved, and well drilling cost is lowered.
Description
Technical field
The utility model belongs to the drilling equipment technical fields such as petroleum gas, mine engineering, building foundation engineering construction, geology, the hydrology, particularly relates to a kind of anti-mud drum PDC drill bit with pit water passage surface.
Background technology
PDC drill bit is that to utilize composite polycrystal-diamond (be PDC tooth to one, also be called for short tooth) scraping of rock cut or the drill bit of the broken rock of shear action, be one of main rock crushing tool using in drilling engineering now, particularly make with the most use at the middle PDC drill bit of creeping into of middle soft formation.For the cutting structure and the hydraulic structure that make drill bit reach better working effect, in the time of design, manufacture drill bit, conventionally according to certain rule, PDC tooth is divided into some groups, PDC tooth is on the same group cemented on same toothholder, each toothholder and the PDC tooth distributing thereon form a cutting structure unit, are called wing (toothholder is wing body).Groove between wing has just formed the flow path groove of drill bit.Flow path groove is to be mainly convenient to drilling fluid cutting carring discharge from shaft bottom.
PDC drill bit is comparatively fast creeping into or when fast drilling, and particularly, in the time running into the staggered stratum of the stratum of soft mudstone stratum, easily imbibition or soft or hard, landwaste amount is larger, and landwaste easily adheres to and be flocked on gradually the water passage surface of drill bit, blocks runner, forms mud drum.Bit balling can make the brill rock ability of drill bit significantly decline, and makes cutting teeth be difficult to effective cooling, and the rate of wear aggravation of tooth, causes drilling speed to reduce, and drilling life of bit shortens.When mud drum is serious, drill bit, substantially without drilling ability, cannot form obvious drilling depth, the more bit change that now needs to make a trip, and this will obviously reduce drilling efficiency, increase drilling cost.
Therefore, solve the mud drum problem of PDC drill bit, improve drilling efficiency, having become drill bit researchers needs one of major issue solving.
Utility model content
The purpose of this utility model overcomes above-mentioned the deficiencies in the prior art part exactly, and a kind of anti-mud drum PDC drill bit with pit water passage surface is provided, and has solved the anti-mud drum problem of PDC drill bit, thereby improves drilling efficiency, reduces drilling cost.
The purpose of this utility model realizes by following technical proposals:
A kind of anti-mud drum PDC drill bit with pit water passage surface, comprise drill body, this drill body bottom is provided with the nipple that connects drilling rod, and top is provided with some wings, groove between wing forms the flow path groove of drill bit, and all or part of surface of flow path groove is provided with pit.
As preferably, the flow path groove surface of wing leading flank is provided with pit.
As preferably, the bottom surface of flow path groove is provided with pit.
As preferably, the flow path groove surface of wing trailing flank is provided with pit.
As preferably, described pit is circular pit.
Thinking of the present invention derives from the body surface that falls impedance adhesion of living in soil or inhabiting the animal in hole in the ground.In order to reduce the adhesion of earth, the body surface of some animal presents the surface characteristics of geometric non-smooth from macroscopic view, as the non-smooth surface of the animals such as dung beetle, mole cricket, pangolin.These animals have and fall the body surface that impedance adheres in glutinous wet soil earth, and its body surface presents typical non-smooth features, these animal body surfaces to fall impedance adhesiving effect very obvious.
When drill bit creeps into, drilling fluid fluid cutting carring is from the migration of flow path groove surface, landwaste and flow path groove Surface Contact.If flow path groove surface is smooth surface, when landwaste amount is larger, migration task amount is large, and landwaste is easy to stick to flow path groove surface, forms landwaste group, makes runner not smooth, and landwaste migration difficulty, even stops up runner, forms mud drum.And all or part of surface on the utility model flow path groove surface is provided with pit.First, because flow path groove surface is provided with pit, reduce the contact area of landwaste and flow path groove, thereby reduced the adhesion of landwaste on flow path groove surface.Secondly, pit can store lubricating fluid (drilling fluid), and it can be to the landwaste lubricate flowing through from flow path groove surface, and adhesion and the frictional force on landwaste and flow path groove surface are declined greatly.Further, the existence of pit makes flow path groove surface depression uneven, and the landwaste (group) to the pit of flowing through has chip breaking, chip effect, makes landwaste group be difficult to moulding.
Compared with prior art, the beneficial effects of the utility model are: this anti-mud drum PDC drill bit with pit water passage surface is than conventional PDC drill bit, can obviously reduce the adhesion of landwaste at flow path groove, prevent that runner from stopping up, reach the object of anti-mud drum, thereby improve drill bit drilling efficiency, reduce drilling cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is top view of the present utility model;
Fig. 3 is the cross-sectional view of pit;
Fig. 4 is schematic diagram when landwaste is through pit in drill bit drilling process;
Fig. 5 is the schematic diagram that is only provided with pit on the flow path groove surface of wing leading flank;
Fig. 6 is that only the bottom surface at flow path groove is provided with the schematic diagram of pit;
Fig. 7 is the schematic diagram that is only provided with pit on the flow path groove surface of wing trailing flank.
The specific embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
Referring to Fig. 1 to Fig. 3, a kind of anti-mud drum PDC drill bit with pit water passage surface, comprise drill body 1, this drill body 1 bottom is provided with the nipple 2 that connects drilling rod, top is provided with some wings 3, groove between wing 3 forms the flow path groove 4 of drill bit, and all surfaces of flow path groove 4 is provided with pit 5.
Referring to Fig. 5 to Fig. 7, this PDC drill bit also can only be provided with pit 5 at flow path groove 4 part surfaces, is only provided with pit 5 on flow path groove 4 surfaces of wing leading flank or is only provided with pit 5 in the bottom surface of flow path groove 4 or is only provided with pit 5 on flow path groove 4 surfaces of wing trailing flank.
The pit 5 of the present embodiment adopts circular pit, and drill bit processing is more convenient, and anti-mud drum effect is better, also can adopt according to actual conditions the pit of other shapes.
Referring to Fig. 4, PDC drill bit combines together under lower going-into-well with other drilling tools in drilling process, then turn on pump circulating fluid the rotary drilling of pressurizeing.In drilling process, PDC tooth is scraped the landwaste producing while cutting brokenly rock and is moved and return along flow path groove 4, when drill bit is during at or fast drilling very fast compared with soft formation, the landwaste amount producing is larger, landwaste easily adheres to and is flocked on gradually the flow path groove surface of drill bit, blocks runner, forms mud drum.Due to PDC drill bit of the present utility model, on all or part of surface of flow path groove 4, pit 5 is set and forms pit type non-smooth surface.Drill bit is in the time creeping into compared with soft formation, and because flow path groove 4 is pit type non-smooth surface, pit 5 can reduce the contact area of landwaste and flow path groove, reduces the adhesion of landwaste on flow path groove surface; Pit 5 is interior can store lubricating fluid 6(drilling fluid), play lubrication, adhesion and the frictional force on landwaste and flow path groove surface are declined greatly; The existence of pit 5 makes flow path groove surface depression uneven, and the landwaste (group) to the pit of flowing through has chip breaking, chip effect, makes landwaste group be difficult to moulding.Pit type non-smooth surface can obviously play the effect of reducing adhesion resistance, thereby prevents the generation of mud drum, reaches the object that improves drilling efficiency.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. one kind has the anti-mud drum PDC drill bit of pit water passage surface, comprise drill body, this drill body bottom is provided with the nipple that connects drilling rod, top is provided with some wings, groove between wing forms the flow path groove of drill bit, it is characterized in that: all or part of surface of flow path groove is provided with pit.
2. the anti-mud drum PDC drill bit with pit water passage surface according to claim 1, is characterized in that: the flow path groove surface of wing leading flank is provided with pit.
3. the anti-mud drum PDC drill bit with pit water passage surface according to claim 1, is characterized in that: the bottom surface of flow path groove is provided with pit.
4. the anti-mud drum PDC drill bit with pit water passage surface according to claim 1, is characterized in that: the flow path groove surface of wing trailing flank is provided with pit.
5. according to the anti-mud drum PDC drill bit with pit water passage surface described in claim 1 to 4 any one, it is characterized in that: described pit is circular pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738497.8U CN203603766U (en) | 2013-11-21 | 2013-11-21 | Mud drum resistant PDC drill bit with pit runner surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738497.8U CN203603766U (en) | 2013-11-21 | 2013-11-21 | Mud drum resistant PDC drill bit with pit runner surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203603766U true CN203603766U (en) | 2014-05-21 |
Family
ID=50716443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320738497.8U Expired - Fee Related CN203603766U (en) | 2013-11-21 | 2013-11-21 | Mud drum resistant PDC drill bit with pit runner surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203603766U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804659A (en) * | 2016-03-11 | 2016-07-27 | 柳超 | Automatic reinforced drill bit used for drilling deep well |
| CN107558929A (en) * | 2017-10-17 | 2018-01-09 | 沧州格锐特钻头有限公司 | A kind of special type refuses mud drum PDC drill bit |
-
2013
- 2013-11-21 CN CN201320738497.8U patent/CN203603766U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804659A (en) * | 2016-03-11 | 2016-07-27 | 柳超 | Automatic reinforced drill bit used for drilling deep well |
| CN107558929A (en) * | 2017-10-17 | 2018-01-09 | 沧州格锐特钻头有限公司 | A kind of special type refuses mud drum PDC drill bit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108506037A (en) | Coal working face top plate high position directional drilling group's pressure relief gas pumping mining method | |
| CN206280004U (en) | A kind of mixing PDC drill bit with multiple cutting function | |
| CN202338240U (en) | Borehole cleaning tool | |
| CN101387187A (en) | Bionic non-smooth spiral drill | |
| CN105781425A (en) | Drill bit cutting element with continuous sharp cutting edge | |
| CN204024486U (en) | A kind of anti-mud drum PDC drill bit | |
| CN204082017U (en) | The long gauge negative pressure antiimpact PDC drill bit of a kind of ultradeep well | |
| CN206000471U (en) | A kind of preventing sticking PDC drill bit | |
| CN203603766U (en) | Mud drum resistant PDC drill bit with pit runner surface | |
| CN103603604B (en) | A kind of flow path groove surface has the anti-mud drum PDC drill bit of pit | |
| CN203640615U (en) | Balling-resistant PDC drill provided with penetrating pits in flow passage surface | |
| CN208122763U (en) | A kind of diameter changing drilling tool | |
| CN203847004U (en) | PDC drill bit with high drilling rate | |
| CN203403824U (en) | PDC bit | |
| CN204627420U (en) | Gauge PDC drill bit is strengthened for plasticity mud shale three wing | |
| CN203603767U (en) | Balling-up resistant PDC drill with flow surfaces provided with convex bags | |
| CN205206745U (en) | PDC drill bit that can broken wall of a well junk | |
| CN203603768U (en) | Balling-up resistant PDC drill with flow surfaces provided with pits | |
| CN201972606U (en) | Diamond polycrystalline drill bit | |
| CN204920809U (en) | Mud drum drill bit is prevented to little hydrophthalmia | |
| CN204920811U (en) | Mud drum PDC drill bit is prevented to step wing | |
| CN204266929U (en) | A kind of diamond bit with gauge structure | |
| CN204024482U (en) | A kind of combined type PDC drill bit | |
| CN203559791U (en) | Shaft bottom negative-pressure upward-movement nozzle PDC drill | |
| CN103603605B (en) | Water passage surface has the anti-mud drum PDC drill bit of through pit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |