CN106917588A - Split type backward jet polycrystalline diamond compact bit - Google Patents
Split type backward jet polycrystalline diamond compact bit Download PDFInfo
- Publication number
- CN106917588A CN106917588A CN201510981508.9A CN201510981508A CN106917588A CN 106917588 A CN106917588 A CN 106917588A CN 201510981508 A CN201510981508 A CN 201510981508A CN 106917588 A CN106917588 A CN 106917588A
- Authority
- CN
- China
- Prior art keywords
- channel
- chip removal
- nozzle
- junction portion
- polycrystalline diamond
- 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.)
- Granted
Links
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 9
- 239000010432 diamond Substances 0.000 title claims abstract description 9
- 238000005553 drilling Methods 0.000 claims abstract description 31
- 238000005476 soldering Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 230000035515 penetration Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 210000004233 talus Anatomy 0.000 description 3
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010114 lost-foam casting Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to drilling equipment field, more particularly to a kind of split type backward jet polycrystalline diamond compact bit, including drill body, drill body includes junction portion and drilling part, the two be connected through a screw thread after in outer side seams soldering, junction portion is provided centrally with reservoir channel, channel of chip removal epimere is provided with around reservoir channel, that creeps into part is provided centrally with nozzle passage, the end of nozzle passage is provided with the removable nozzle of threaded connection, channel of chip removal hypomere is provided with around nozzle passage, the annular groove that cross section is circular arc is provided with the inner side end for creeping into part.The present invention uses split-type design, it is ensured that while the use function of drill bit, effectively reduce processing cost；Present invention alleviates the load of pump, pump efficiency is improve, reduce bottom hole pressure difference, improve chip removal effect, and then further increase rate of penetration.
Description
Technical field
The invention belongs to drilling equipment technical field, more particularly to a kind of split type backward jet polycrystalline diamond compact bit.
Background technology
In drillng operation, large rock-carrying ability is an important indicator for weighing drill bit using effect, if landwaste carries effect and does not reach requirement,
Problems can be caused to occur, such as frictional resistance high and high torque, sand setting bit freezing, setting of casing are difficult with well cementation, drill tool wear is serious, logging instrument
Enter operation difficulty etc. under device, in some instances it may even be possible to cause drillng operation to be forced to stop.In recent years, occur in that some have backward jet pumping function
Drill bit, part drilling fluid is directed directly to channel of chip removal epimere by this drill bit in drill bit internal, by this up generation of part drilling fluid
Swabbing action promotes chip removal, and this structure can not only reduce bottom hole pressure difference, improve rate of penetration, moreover it is possible to be inherently eliminated horizontal well
In cutting bed.But as a result of integral structure, the manufacture difficulty of this drill bit is larger, and manufacturing cost is higher.In addition, this
During drilling fluid is diverted in channel of chip removal epimere, the kinetic energy rejection of drilling fluid is big, virtually increased the load of pump, drops for drill bit
Low pump efficiency.
The content of the invention
The present invention provides a kind of split type backward jet polycrystalline diamond compact bit, with the existing such drill bit for solving to be proposed in above-mentioned background technology
It is more expensive to manufacture and reduces the problem of pump efficiency.
Technical problem solved by the invention is realized using following technical scheme：The present invention provides a kind of split type backward jet glomerocryst Buddha's warrior attendant
Aiguille, including drill body, drill body include junction portion and drilling part, and the two is welded after being connected through a screw thread in outer side seams
Close, the one end on junction portion away from drilling part is provided with screw thread for jointed rod, junction portion is provided centrally with reservoir channel,
Channel of chip removal epimere is provided with around reservoir channel, channel of chip removal epimere is provided with horn mouth, described brill near one end of drilling part
Enter the outside of part for gauge, wing is provided with the end face outside for creeping into part, that creeps into part is provided centrally with nozzle passage, nozzle
The end of passage is provided with the removable nozzle of threaded connection, and channel of chip removal hypomere is provided with around nozzle passage, drilling part
The annular groove that cross section is circular arc is provided with inner side end, the diameter at larger-size edge is less than above-mentioned flared rim on groove
On point and drill axis ultimate range, diameter of the diameter at the less edge of size less than reservoir channel on groove.
Described channel of chip removal epimere and channel of chip removal hypomere at least three.
At least three groups of described nozzle passage, the liquid feeding end of all nozzle passages is compiled at one.
The distance between the point nearest apart from junction portion and junction portion are 5mm to 10mm on described groove.
Compared with prior art, the present invention has following good result：
1st, the present invention uses split-type design, it is ensured that while the use function of drill bit, effectively reduce processing cost；
2nd, as a result of split-type design so that processing cross section is able to reality for the annular groove for playing guide functions of circular arc in technique
Existing, during drilling fluid is diverted in channel of chip removal epimere, the kinetic energy rejection of drilling fluid greatly reduces, and under identical operating mode, alleviates
The load of pump, improves pump efficiency, reduces bottom hole pressure difference, improves chip removal effect, and then further increase rate of penetration.
3rd, the setting of removable nozzle, adjustment when can be easy to drilling well to reservoir quantity.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the partial enlarged drawing at removable nozzle.
In figure：1- channel of chip removal epimeres, 2- junction portions, 3- horn mouths, 4- grooves, 5- channel of chip removal hypomeres, 6- drillings part, 7-
Wing, 8- nozzles, 9- nozzle passages, 10- reservoir channels.
Specific embodiment
The present invention is described further below in conjunction with accompanying drawing：
The present invention include drill body, drill body include junction portion 2 and drilling part 6, the two be connected through a screw thread after in outer side joint
Soldering at seam, one end on junction portion 2 away from drilling part 6 is provided with the screw thread for jointed rod, and the center of junction portion 2 sets
Reservoir channel 10 is equipped with, channel of chip removal epimere 1 is provided with around reservoir channel 10, channel of chip removal epimere 1 is close to the one of drilling part 6
End is provided with horn mouth 3, and the outside of described drilling part 6 is gauge, and wing 7 is provided with the end face outside for creeping into part 6, is crept into
Part 6 is provided centrally with nozzle passage 9, and the end of nozzle passage 9 is provided with the removable nozzle 8 of threaded connection, nozzle passage
Channel of chip removal hypomere 5 is provided with around 9, the annular groove 4 that cross section is circular arc is provided with the inner side end for creeping into part 6, it is recessed
The diameter at larger-size edge is less than the point and the ultimate range of drill axis on the edge of above-mentioned horn mouth 3, size on groove 4 on groove 4
Diameter of the diameter at less edge less than reservoir channel 10.Described channel of chip removal epimere 1 and channel of chip removal hypomere 5 at least three.
At least three groups of described nozzle passage 9, the liquid feeding end of all nozzle passages 9 is compiled at one.Apart from junction portion on described groove 4
The distance between 2 nearest points and junction portion 2 are 5mm to 10mm.
The course of work of the invention is as follows：
During drillng operation, drilling fluid is injected from reservoir channel 10, and when it enters drill bit, a part of drilling fluid is carried from after the ejection of nozzle 8
Landwaste flows back from channel of chip removal, and another part drilling fluid changes flow direction under the guide effect of groove 4, and injects channel of chip removal epimere 1,
Play swabbing action.
Technical advantage of the invention and technique effect are explained from specific features now：
1st, manufacturing process aspect：
(1) if drill bit uses unitary design, many complicated internal structures can not realize that certain structures are by mechanical processing toolses
Processing is enabled, cannot also be realized by conventional mechanical processing toolses, can only be unconventional using lost foam casting, electrical-chemistry method etc.
Processing technology, difficulty of processing is big, and split-type structural is employed in high processing costs, therefore the present invention, and this design not only causes that processing is horizontal
Section is achieved for the annular groove 4 for playing guide functions of circular arc in technique, also causes that the processing of channel of chip removal is easier, and processes
Cost is also lower；
(2) split-type design so that the mass parameter such as surface roughness and cleanliness of groove 4 is easier to ensure that, makes to fully ensure that
Use effect；
(3) junction portion 2 and drilling part 6 both ensure that the axiality of the two connection using the connected mode of soldering after threaded connection,
In turn ensure that the reliability of connection.
2nd, using effect aspect：
(1) groove 4 that the present invention is set, the drilling fluid of outflow will will can shunt in reservoir channel 10 in channel of chip removal epimere 1,
Drilling fluid injects channel of chip removal epimere 1 after changing flow direction under the guide effect of groove 4, exists into the drilling fluid in channel of chip removal epimere 1
Flow up to form suction effect under pressure effect, so as to promote the flowing of talus glacier, reduce bottom hole pressure difference, improve chip removal efficiency, enter
And improve rate of penetration；
(2) difference of the practical condition such as stratum condition and pump pressure, the demand that liquid measure is crossed to nozzle is different, the setting of removable nozzle 8,
Make the replaceable latus rectum different spray nozzles of operating personnel, to be adjusted to reservoir quantity, to adapt to different operating modes；
(3) at least three groups channel of chip removal and nozzle passage 9 can effectively ensure that reservoir quantity or solid capacity；
(4) " diameter at larger-size edge is less than the ultimate range of the point and drill axis on the edge of above-mentioned horn mouth 3 on groove 4,
Diameter of the diameter at the less edge of size less than reservoir channel 10 on groove 4." as design requirement ensure that groove 4 can be smooth
Shunt and will be during shunting part accurately injects channel of chip removal epimere 1 as far as possible；
(5) " the distance between the point nearest apart from junction portion 2 and junction portion 2 are 5mm to 10mm on groove 4 ", both can guarantee that
Talus glacier circulation is smooth, can guarantee that the drilling fluid flow direction after being shunted through groove 4 is accurate again；
(6) horn mouth 3 further increases the smoothness of talus glacier.
Claims (4)
1. a kind of split type backward jet polycrystalline diamond compact bit, including drill body, it is characterised in that：Drill body includes connector portions
Point (2) and drilling partly (6), the two be connected through a screw thread after in outer side seams soldering, junction portion (2) away from brill
The one end for entering part (6) is provided with screw thread for jointed rod, and junction portion (2) are provided centrally with reservoir channel (10),
Channel of chip removal epimere (1) is provided with around reservoir channel (10), channel of chip removal epimere (1) is near drilling part (6)
One end is provided with horn mouth (3), and the outside of described drilling part (6) is gauge, in the end face outside of drilling part (6)
Wing (7) is provided with, that creeps into part (6) is provided centrally with nozzle passage (9), and the end of nozzle passage (9) is provided with
The removable nozzle (8) being connected through a screw thread, is provided with channel of chip removal hypomere (5) around nozzle passage (9), creep into part
(6) annular groove (4) that cross section is circular arc is provided with inner side end, the diameter at larger-size edge is small on groove
In the point on above-mentioned horn mouth (3) edge and the ultimate range of drill axis, the diameter at the less edge of size on groove (4)
Less than the diameter of reservoir channel (10).
2. a kind of split type backward jet polycrystalline diamond compact bit according to claim 1, it is characterised in that：Described chip removal is led to
Road epimere (1) and channel of chip removal hypomere (5) at least three.
3. a kind of split type backward jet polycrystalline diamond compact bit according to claim 1, it is characterised in that：Described nozzle leads to
At least three groups of road (9), the liquid feeding end of all nozzle passages (9) is compiled at one.
4. a kind of split type backward jet polycrystalline diamond compact bit according to claim 1, it is characterised in that：Described groove (4)
On the distance between the point nearest apart from junction portion (2) and junction portion (2) be 5mm to 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981508.9A CN106917588B (en) | 2015-12-24 | 2015-12-24 | Split type reverse jet polycrystalline diamond drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981508.9A CN106917588B (en) | 2015-12-24 | 2015-12-24 | Split type reverse jet polycrystalline diamond drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106917588A true CN106917588A (en) | 2017-07-04 |
| CN106917588B CN106917588B (en) | 2020-02-07 |
Family
ID=59456942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510981508.9A Active CN106917588B (en) | 2015-12-24 | 2015-12-24 | Split type reverse jet polycrystalline diamond drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106917588B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110303012A (en) * | 2019-07-29 | 2019-10-08 | 武汉特瑞升电子科技有限公司 | A kind of pipe dredging device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345445A (en) * | 2011-06-10 | 2012-02-08 | 中国石油大学(华东) | Drill bit for particle impact drilling technology |
| CN103835659A (en) * | 2014-03-18 | 2014-06-04 | 西南石油大学 | Drill capable of improving center scraps removal efficiency |
| CN104329028A (en) * | 2014-11-16 | 2015-02-04 | 吉林大学 | Split type inner jet reverse circulation rotary percussion drill bit |
| CN104806173A (en) * | 2015-05-11 | 2015-07-29 | 中国石油大学(北京) | Oblique-crossing back mixing type jet mill drill bit of horizontal well |
| CN204663403U (en) * | 2015-05-11 | 2015-09-23 | 中国石油大学(北京) | Mixing jet mill drill bit after a kind of horizontal well oblique |
| US20160108680A1 (en) * | 2014-10-20 | 2016-04-21 | Baker Hughes Incorporated | Reverse circulation hybrid bit |
-
2015
- 2015-12-24 CN CN201510981508.9A patent/CN106917588B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345445A (en) * | 2011-06-10 | 2012-02-08 | 中国石油大学(华东) | Drill bit for particle impact drilling technology |
| CN103835659A (en) * | 2014-03-18 | 2014-06-04 | 西南石油大学 | Drill capable of improving center scraps removal efficiency |
| US20160108680A1 (en) * | 2014-10-20 | 2016-04-21 | Baker Hughes Incorporated | Reverse circulation hybrid bit |
| CN104329028A (en) * | 2014-11-16 | 2015-02-04 | 吉林大学 | Split type inner jet reverse circulation rotary percussion drill bit |
| CN104806173A (en) * | 2015-05-11 | 2015-07-29 | 中国石油大学(北京) | Oblique-crossing back mixing type jet mill drill bit of horizontal well |
| CN204663403U (en) * | 2015-05-11 | 2015-09-23 | 中国石油大学(北京) | Mixing jet mill drill bit after a kind of horizontal well oblique |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110303012A (en) * | 2019-07-29 | 2019-10-08 | 武汉特瑞升电子科技有限公司 | A kind of pipe dredging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106917588B (en) | 2020-02-07 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |