CN205445474U - PDC drill bit - Google Patents
PDC drill bit Download PDFInfo
- Publication number
- CN205445474U CN205445474U CN201521106891.5U CN201521106891U CN205445474U CN 205445474 U CN205445474 U CN 205445474U CN 201521106891 U CN201521106891 U CN 201521106891U CN 205445474 U CN205445474 U CN 205445474U
- Authority
- CN
- China
- Prior art keywords
- driver element
- cutting
- cutting unit
- drill bit
- pdc drill
- 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
- 238000005520 cutting process Methods 0.000 claims abstract description 135
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 9
- 238000009987 spinning Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 4
- 230000036346 tooth eruption Effects 0.000 abstract 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a PDC drill bit, include: a connecting shaft having an axis; a plurality of blades arranged on the connecting shaft; cutting teeth arranged on the blades; the driving unit is arranged on the cutting teeth and can rotate relative to the cutting teeth; the cutting unit is connected with the driving unit in a matching way; at least one part of the end surface of the cutting unit exceeds the end surface of the cutting tooth, and the driving unit can change the stress surface of the cutting unit during cutting by rotating the cutting unit. The cutting unit and the driving unit connected with the cutting unit are arranged in the cutting teeth, the driving unit can change the stress surface of the cutting unit during cutting by rotating the cutting unit, the uniform stress of each surface of the cutting teeth is realized in the drilling process of the PDC drill bit, and the influence on the service life of the drill bit due to the damage of the cutting teeth caused by the unilateral stress is avoided.
Description
Technical field
This utility model relates to oil-drilling field, particularly relates to a kind of PDC drill bit.
Background technology
PDC (Polycrystallinediamondcompact) is a kind of cutting element man-made polycrystalline diamond and tungsten carbide pedestal being passed through and welding together under High Temperature High Pressure.PDC drill bit is to be provided with PDC on the cutting tooth of normal drill bit.Since PDC drill bit the eighties in last century is come out, because having the features such as average rate of penetration height, many, the life-span length of drilling depth, it is increasingly becoming a kind of efficient rock-breaking instrument of oil, gas industry wide popularization and application.Along with PDC drill bit understanding is deepened continuously by people, its production technology improves constantly, and usage amount increases the most year by year.
PDC drill bit is in drilling process, and its main drilling well function is to attack stratum with cutting tooth, it is achieved the effective destruction to stratum.The life-span length of cutting tooth will directly influence the life-span of drill bit.In drilling process, cut tooth cut stratum in shaft bottom with relatively-stationary stress surface；The extent of damage appearing in cutting certain position of tooth in drilling process is higher than the situation of other relative position, therefore has influence on the life-span of PDC drill bit.
Chinese patent ZL201310573289.1 discloses a kind of rotary teeth drill bit, at least provided with a rotary teeth on the knife face of each wing of drill bit.Drill bit is when cutting stratum, and the whole part of the cutting end face of drill bit all can participate in the cutting to stratum, thus improves the utilization rate of its cutting end face, and the service life of drill bit is greatly improved.But this drill bit uses gear-driven mode, and structure is relative complex；And this drill bit can cause the rotary speed of cutting tooth uneven because of inhomogeneous formation.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of PDC drill bit, by being configured the structure of cutting tooth, improves the life-span of PDC drill bit.
To achieve these goals, this utility model provides a kind of PDC drill bit, including:
There is the connecting shaft of axis；
The multiple wings being arranged in described connecting shaft；
The cutting tooth being arranged on wing；
Being arranged on the driver element on described cutting tooth, described driver element can rotate relative to cutting tooth；
Cutting unit, described cutting unit is connected with described driver element；The end face of described cutting unit is at least partially beyond the end face of described cutting tooth, and described driver element can change the stress surface during cutting of described cutting unit by rotating described cutting unit.
Preferably, the upper surface of described cutting tooth offers the cavity of one end open, and described driver element is arranged in described cavity.
Preferably, described cutting unit is arranged in described cavity, and described cutting unit is connected with the one end fits of described driver element, and the other end of described cutting unit is suitable with the opening of described cavity.
Preferably, being provided with baffle ring between described cutting unit and described driver element, described driver element is fixedly installed in described cavity by described baffle ring.
Preferably, described drill body being provided with wing, described cutting tooth is arranged on described wing.
Preferably, described driver element is the spinning device of charged pool.
Preferably, the rotary speed of described driver element is adjustable.
Preferably, described cutting unit is PDC cutting unit.
Preferably, described cutting unit includes that pedestal and composite sheet, described composite sheet are arranged on pedestal, and described pedestal is connected with described driver element.
By installing cutting unit and coupled driver element in cutting tooth, described driver element can change the stress surface during cutting of described cutting unit by rotating described cutting unit；Cutting tooth each face uniform stressed is realized, it is to avoid cause the infringement of cutting tooth to affect bit life because of one-sided stress in PDC drill bit drilling process.
Accompanying drawing explanation
Fig. 1 is overall schematic of the present utility model.
Fig. 2 is the structural representation cutting tooth in embodiment of the present utility model.
Fig. 3 a is the structural representation cutting unit in embodiment of the present utility model.
Fig. 3 b is the structural representation of driver element in embodiment of the present utility model.
Fig. 3 c is the structural representation of baffle ring in embodiment of the present utility model.
The figures above illustrates: 1, connecting shaft；11, interface；2, drill body；21, cutting tooth；3, driver element；4, cutting unit；41, pedestal；42, composite sheet；5, cavity；6, wing.
Detailed description of the invention
It should be understood that above description is to illustrate rather than to limit.By reading foregoing description, the many embodiments outside the example provided and many application the most all will be apparent from.Therefore, the scope of this teaching should not determine with reference to foregoing description, but should determine with reference to the four corner of the equivalent that claims and these claim are had.Include that the disclosure of patent application and bulletin is all passed through with reference to being incorporated herein for comprehensive purpose, all articles and reference.Any aspect omitting theme disclosed herein in aforementioned claim is not intended to abandon this body matter, also should not be considered as utility model people and this theme is not thought of as a part for disclosed utility model theme.
As it is shown in figure 1, a kind of PDC drill bit, including: there is the connecting shaft 1 of axis；The multiple wings 6 being arranged in connecting shaft；The cutting tooth 21 being arranged on wing 6.Driver element 3, driver element 3 is arranged on cutting tooth 21, and driver element 3 can uniform rotation.Cutting unit 4, cutting unit 4 is connected with driver element 3；The end face of cutting unit 4 is at least partially beyond the end face of cutting tooth 21；Driver element 3 can change stress surface when cutting unit 4 cuts by rotating cutting unit 4.
It is also preferred that the left connecting shaft 1 can be a cylindrical structure.Can be provided with the interface 11 of jointed rod on the lower surface of connecting shaft 1, the specification of interface 11 selects according to actually used requirement.Connecting shaft 1 also includes drill body 2, and drill body 2 can be cylindrical structure, it is also possible to select according to actually used needs.Drill body 2 can be arranged in connecting shaft 1 by the way of welding, drill body 2 can also be connected by pin, threaded or other connected mode is fixed in connecting shaft 1, the mode that drill body 2 is not arranged in connecting shaft 1 by the present embodiment limits, as long as meeting can install easily and use during actual production and use, be all to meet requirement of the present utility model.
Cutting tooth 21 can be arranged directly on drill body 2, and cutting tooth 21 is arranged on the upper surface of drill body 2, it is also possible to be arranged on the sidewall of drill body 2.The structure of cutting tooth 21 can be the column structure that top is identical with base diameter, it is also possible to be more than the column structure of bottom for top end diameter.The top of cutting tooth 21 can be chondritic or ellipsoidal structure.Cutting the tooth 21 arrangement mode on drill body 2 can be rule can also be irregular, can according to reality service condition select.Cutting tooth 21 can arrange in the arrangement mode of external diffusion.Driver element 3 is arranged on the upper surface of cutting tooth 21, and the end face of one end of driver element 3 and cutting tooth 21 is connected；Being provided with cutting unit 4 on the other end of cutting tooth 21, the matching form of the upper surface of the end surface shape of cutting unit 4 and cutting tooth 21 closes；Cutting unit 4 can be PDC.Cutting unit 4 is connected with driver element 3, driver element 3 changes cutting unit 4 and extraneous contact position by driving cutting unit 4 to carry out rotating, and then makes driver element 3 can change stress surface when cutting unit 4 cuts by rotating cutting unit 4.
In another specific embodiment, driver element 3 can be the spinning device with battery, and battery is arranged on the bottom of driver element.The rated voltage of driver element 3 can be 0.5V, and the working life of each battery can reach more than 300 hours.The speed of driver element 3 is adjustable, and can be with 13-15 degree/hour carry out at the uniform velocity rotation.Driver element 3 is by rotation at the uniform velocity, and then makes driver element 3 can change the stress surface when cutting unit 4 being arranged on driver element 3 cuts.Thus reach to extend the purpose of the working life of cutting tooth 21.
Driver element 3 can also be the device using other power source as its rotary power, can change stress surface when cutting unit 4 cuts and all meet requirement of the present utility model by rotating cutting unit 4 as long as meeting driver element 3.
By installing cutting unit and coupled driver element in cutting tooth, driver element can change stress surface during cutting unit cutting by rotating cutting unit；Cutting tooth each face uniform stressed is realized, it is to avoid cause the infringement of cutting tooth to affect bit life because of one-sided stress in PDC drill bit drilling process.
In a preferred embodiment, as in figure 2 it is shown, in order to prevent the driver element 3 being arranged on cutting tooth 21 end face from suffering damage in actual work process, the cavity 5 of one end open can be offered in cutting tooth 21.The upper surface 211 of cutting tooth 21 can offer the cavity 5 of one end open, and driver element 3 is arranged in cavity 5, so can play the protective effect to driver element 3.The size of cavity 5 can select according to the size of driver element 3.The lower surface of driver element 3 coordinates conflict, the upper surface of driver element 3 to be connected with cutting unit 4 with the diapire of cavity.
It is also preferred that the left the cutting unit 4 being arranged on driver element 3 can also be arranged in cavity 5, cutting unit 4 is connected with the one end fits of driver element 3, and the other end of cutting unit 4 is suitable with the opening of cavity 5.As in figure 2 it is shown, between the vertical direction of the upper surface 211 of the vertical direction of the upper surface of cutting unit 4 and cutting tooth 21 at an angle.So purpose of design makes cutting tooth 21 when rock cutting, and cutting unit 4 can be at an angle with cutting face, and then rock can more effectively be cut by cutting unit 4.
Preferably, cutting tooth 21 is arranged on wing 6.Cutting tooth 21 can be arranged on wing 6 by the way of welding, cutting tooth 21 can also be connected by pin, threaded mode is fixed on wing 6, the mode that cutting tooth 21 is not arranged on wing 6 by the present embodiment limits, as long as meeting can install easily and use during actual production and use, be all to meet requirement of the present utility model.
In a specific embodiment, being provided with baffle ring 31 (as shown in Figure 3 c) between cutting unit 4 and driver element 3, driver element 3 is fixed by baffle ring 31.In order to prevent driver element 3 from departing from from cavity 5 during work, driver element 3 and cutting unit 4 junction being provided with baffle ring 31, baffle ring 31 can be fixed on by interference fit in cavity 5.The device of fixed drive unit 3 is limited by the present embodiment, ensureing that driver element 4 will not depart from from cavity 5 as long as meeting, all meeting requirement of the present utility model in actual work process.
In a specific embodiment, as it is shown in figure 1, can be provided with wing 6 on drill body 2, wing 6 can be the strip projected parts of upper surface and the side being arranged on drill body 2, wing 6 can regularly arranged can also irregular alignment.Wing 6 can be petal, and several wings 6 scatter to surrounding from the center of the upper surface of drill body 2.Wing 6 can be arranged on drill body 2 by the way of welding, wing 6 can also be connected by pin, threaded mode is fixed on drill body 2, the mode that wing 6 is not arranged on drill body 2 by the present embodiment limits, as long as meeting can install easily and use during actual production and use, be all to meet requirement of the present utility model.
Cutting tooth 21 is arranged on wing 6.Cutting tooth 21 can be arranged on wing 6 by the way of welding, cutting tooth 21 can also be connected by pin, threaded mode is fixed on wing 6, the mode that cutting tooth 21 is not arranged on wing 6 by the present embodiment limits, as long as meeting can install easily and use during actual production and use, be all to meet requirement of the present utility model.
Cutting unit 4 can be PDC (Polycrystallinediamondcompact).As shown in Figure 3 a, cutting unit 4 includes pedestal 41 and composite sheet 42, and composite sheet 42 is arranged on pedestal 41 and composite sheet 43 is fixing with pedestal 41 is connected.Composite sheet 42 can be man-made polycrystalline diamond, and pedestal 41 can be tungsten carbide-base seat.Pedestal 41 and driver element 3 (as shown in Figure 3 b) are connected so that driver element 3 can band moving base 41 common rotation.Driver element 3 is by rotation at the uniform velocity, and then makes driver element 3 can change the stress surface when PDC being arranged on driver element 3 cuts uniformly by rotating.Thus reach to extend the purpose of cutting tooth 21 working life.
When this PDC drill bit is applied in stratum deep for certain oil field 3000m, owing to this formation rock hardness is high, conventional PDC drill bit cutting odontotripsis is serious and scraps, and single footage per bit only has about 200m.After using this PDC drill bit, it is achieved that boring the uniform stressed in PDC head all directions, single footage per bit has reached 287m, and it is not optimized contrast, improves 43%.
It should be understood that above description is to illustrate rather than to limit.By reading foregoing description, the many embodiments outside the example provided and many application the most all will be apparent from.Therefore, the scope of this teaching should not determine with reference to foregoing description, but should determine with reference to the four corner of the equivalent that claims and these claim are had.Include that the disclosure of patent application and bulletin is all passed through with reference to being incorporated herein for comprehensive purpose, all articles and reference.Any aspect omitting theme disclosed herein in aforementioned claim is not intended to abandon this body matter, also should not be considered as utility model people and this theme is not thought of as a part for disclosed utility model theme.
Claims (9)
1. a PDC drill bit, it is characterised in that including:
There is the connecting shaft of axis；
The multiple wings being arranged in described connecting shaft；
The cutting tooth being arranged on wing；
Being arranged on the driver element on described cutting tooth, described driver element can rotate relative to cutting tooth；
Cutting unit, described cutting unit is connected with described driver element；The end face of described cutting unit is at least partially beyond the end face of described cutting tooth, and described driver element can change the stress surface during cutting of described cutting unit by rotating described cutting unit.
PDC drill bit the most according to claim 1, it is characterised in that the upper surface of described cutting tooth offers the cavity of one end open, and described driver element is arranged in described cavity.
PDC drill bit the most according to claim 2, it is characterised in that described cutting unit is arranged in described cavity, and described cutting unit is connected with the one end fits of described driver element, the other end of described cutting unit is suitable with the opening of described cavity.
PDC drill bit the most according to claim 3, it is characterised in that be provided with baffle ring between described cutting unit and described driver element, described driver element can be fixedly installed in described cavity by described baffle ring.
PDC drill bit the most according to claim 1, it is characterised in that described driver element is the spinning device of charged pool.
PDC drill bit the most according to claim 5, it is characterised in that described driver element energy uniform rotation, and the rotary speed of described driver element is adjustable.
PDC drill bit the most according to claim 6, it is characterised in that described driver element can be with 13-15 degree/hour rotate.
PDC drill bit the most according to claim 1, it is characterised in that described cutting unit is PDC cutting unit.
PDC drill bit the most according to claim 8, it is characterised in that described cutting unit includes that pedestal and composite sheet, described composite sheet are arranged on described pedestal, and described pedestal is connected with described driver element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521106891.5U CN205445474U (en) | 2015-12-28 | 2015-12-28 | PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521106891.5U CN205445474U (en) | 2015-12-28 | 2015-12-28 | PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205445474U true CN205445474U (en) | 2016-08-10 |
Family
ID=56579260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521106891.5U Active CN205445474U (en) | 2015-12-28 | 2015-12-28 | PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205445474U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382098A (en) * | 2016-11-25 | 2017-02-08 | 西南石油大学 | Rotary tooth |
| WO2018095441A1 (en) * | 2016-11-25 | 2018-05-31 | 西南石油大学 | Single cone bit having rotating tooth |
| CN108331532A (en) * | 2017-12-27 | 2018-07-27 | 中国石油集团长城钻探工程有限公司 | A kind of rotary steering drilling tool and well system |
-
2015
- 2015-12-28 CN CN201521106891.5U patent/CN205445474U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382098A (en) * | 2016-11-25 | 2017-02-08 | 西南石油大学 | Rotary tooth |
| CN106382098B (en) * | 2016-11-25 | 2018-05-15 | 西南石油大学 | A kind of rotary teeth |
| WO2018095441A1 (en) * | 2016-11-25 | 2018-05-31 | 西南石油大学 | Single cone bit having rotating tooth |
| US10961784B2 (en) | 2016-11-25 | 2021-03-30 | Southwest Petroleum University | Rotating cutter single cone bit |
| CN108331532A (en) * | 2017-12-27 | 2018-07-27 | 中国石油集团长城钻探工程有限公司 | A kind of rotary steering drilling tool and well system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203499568U (en) | Split PDC (polycrystalline diamond compact) guide chambering drilling bit | |
| CN205445474U (en) | PDC drill bit | |
| US1812475A (en) | Drilling device | |
| CN105649540B (en) | Drilling tool | |
| CN102022084B (en) | Compound single cone bit | |
| CN105178868A (en) | Design method and device of PDC drill bit and PDC drill bit | |
| CN203097722U (en) | Tapered gauge PDC drill bit | |
| CN203499567U (en) | Self-breaking type micro coring drill bit | |
| CN208330192U (en) | A kind of hard alloy mine bore tooth | |
| CN211851674U (en) | Novel cone-PDC composite drill bit | |
| CN201292773Y (en) | PDC drill for drilling flexible and hard interactive strata | |
| CN203452652U (en) | PDC (polycrystalline diamond compact) drilling bit | |
| CN111088949A (en) | Novel cone-PDC composite drill bit | |
| CN201908576U (en) | Gauge protection joint for oil field well drilling | |
| EP2863004A1 (en) | Roller cutter drill bit with mixed bearing types | |
| CN204877274U (en) | Multistage cutting drill bit | |
| CN104481413B (en) | A kind of revolving cutting bit of rig | |
| CN204476280U (en) | A kind of Double Circular Bit | |
| CN205840785U (en) | One opens rock drill bit | |
| CN203783466U (en) | Multi-cone drill bit | |
| CN104499947B (en) | Gravel-resistant drill | |
| CN213175514U (en) | High-strength composite drill bit | |
| CN204386485U (en) | The revolving cutting bit of a kind of rig | |
| CN219081498U (en) | Three-blade PDC drill bit with special-shaped teeth for small well holes | |
| CN210217635U (en) | Drill stand and combined drill body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |