CN206071461U - A kind of drill bit with open water hole - Google Patents

A kind of drill bit with open water hole Download PDF

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Publication number
CN206071461U
CN206071461U CN201621092980.3U CN201621092980U CN206071461U CN 206071461 U CN206071461 U CN 206071461U CN 201621092980 U CN201621092980 U CN 201621092980U CN 206071461 U CN206071461 U CN 206071461U
Authority
CN
China
Prior art keywords
water hole
cutting
drill bit
drill
open
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.)
Withdrawn - After Issue
Application number
CN201621092980.3U
Other languages
Chinese (zh)
Inventor
况雨春
王芳
尹永清
王勤
秦超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aoruituo Energy Polytron Technologies Inc
Southwest Petroleum University
Original Assignee
Aoruituo Energy Polytron Technologies Inc
Southwest Petroleum University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aoruituo Energy Polytron Technologies Inc, Southwest Petroleum University filed Critical Aoruituo Energy Polytron Technologies Inc
Priority to CN201621092980.3U priority Critical patent/CN206071461U/en
Application granted granted Critical
Publication of CN206071461U publication Critical patent/CN206071461U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of drill bit with open water hole, belong to drilling technology field, including drill body, cutting structure, cutting tooth, chip area, inner flow passage and water hole, cutting structure is arranged on drill body, cutting tooth is arranged on cutting structure, inner flow passage is arranged in drill body, chip area is arranged between cutting structure, water hole is arranged between inner flow passage and chip area and connects inner flow passage and chip area, only one, water hole, overall is in the little shape in the big bottom of mouth, and water hole bottom opening directly with inner flow passage open top insertion, water hole bottom opening area is consistent with inner flow passage open top area or size is substantially suitable.This utility model reduces drilling life of bit and drilling performance because of bit hydraulic unreasonable structure to solve the problems, such as drill bit during rapid drilling and high-temperature drilling, special to provide a kind of drill bit with open water hole.

Description

A kind of drill bit with open water hole
Technical field
This utility model belongs to drilling technology field.
Background technology
Drill bit is the main tool for forming well in drilling engineering for fractured rock, and the hydraulic structure of drill bit is to determine to bore Enter the key factor of performance.When drill bit broken rock is crept into, drilling fluid is ejected into shaft bottom by drill bit water hole from the inner flow passage of drill bit, rises To bottom-hole cleaning, carry and landwaste that drill bit fractured rock of migrating is formed, cool down and clean cutting tooth and auxiliary rock Effect.In modern high-speed drilling technology, drill bit will not only have excellent broken rock structure, will also have good waterpower Energy.Water hole used in conventional bit is mostly little circular port, and multiple settings, the drilling well ejected using round nozzle The cross flow formed by liquid takes rock and cutting tooth cooling work completing shaft bottom.As the hydraulic energy of cross flow is far smaller than directly to spray The hydraulic energy of jet body, the drilling fluid that round nozzle is ejected are weaker to the cleaning of drill bit and cooling capacity.Additionally, conventional bore The multiple jetses that the multiple nozzles of head are produced can be interfered, and the liquid stream to shaft bottom spurt is again mutually dry with the liquid stream that returns on shaft bottom Disturb, cause bottom-hole flow field disorderly, easily formed and be vortexed, cause the aggregation and accumulation of landwaste, landwaste to be difficult to return on smoothly, be unfavorable for The cleaning and cooling of bit body and cutting tooth, even occurs the phenomenons such as bit balling, the burning of bits when serious, brings to drilling well huge Big harm.
In recent years, geothermal drilling quickly grows, and in many geothermal wells, formation temperature has reached 150 DEG C or higher, brill Even up to more than 200 DEG C of the operating temperature of head.The drill bit in the circular water hole of conventional multiple settings, its outlet hole structure can not be expired The needs of drill bit and cutting tooth Rapid Cleaning and cooling in sufficient high-temperature drilling, once the temperature of drill bit and cutting tooth is too high will show Writing reduces the service life and drilling performance of drill bit.
Utility model content
The purpose of this utility model is:In order to solve drill bit during rapid drilling and high-temperature drilling because of bit hydraulic Unreasonable structure and reduce the problem of drilling life of bit and drilling performance, it is special that a kind of drill bit with open water hole is provided.
This utility model purpose is realized by following technical proposals:
A kind of drill bit with open water hole, including drill body, cutting structure, cutting tooth, chip area, inner flow passage and Water hole, cutting structure are arranged on drill body, and cutting tooth is arranged on cutting structure, and inner flow passage is arranged in drill body, Chip area is arranged between cutting structure, and water hole is arranged between inner flow passage and chip area and connects inner flow passage and chip area, water Only one, hole, overall is in the little shape in the big bottom of mouth, and water hole bottom opening directly with inner flow passage open top insertion, water hole bottom Aperture area is consistent with inner flow passage open top area or size is substantially suitable.In this utility model, will be of the present utility model Water hole is referred to as " open water hole ".Preferably, water hole and inner flow passage coaxial communication.
" size is substantially suitable " described in the utility model does universal general understanding, is in order to avoid to aforementioned " one Cause " supplementary notes that absolute equivalent numerically understands and carries out are done, without the need for especially arranging, it is however generally that, need water hole bottom Aperture area for inner flow passage open top area more than 90%.
Alternatively, cutting structure is stationary cutting structure.Alternatively, stationary cutting structure is outstanding at drill body center Empty Cheng Liang, water hole is arranged at below hanging beam.
Alternatively, water hole is the little cylinder in the big bottom of mouth, its cross-sectional outling in star (star have centre bore and Support arm, each support arm is with centre bore centrosymmetry or asymmetric).In the program, water hole have class fan-shaped cylinder (or cry send out Bulk cylinder) cavity shape, and the outlet flume in open water hole (for star structure, its support arm forms out saliva Groove) structure can make full use of the hydraulic energy of drilling fluid jet, and be avoided that drilling fluid to cutting structure and cutting tooth Erosion.The open water hole of starriness outlet, its outlet area of passage are bigger than conventional circular water hole, can directly using the water of jet Power energy flushing manhole bottom.
Alternatively, the outlet flume number in water hole is identical with cutting structure number.In the program, each cutting structure The outlet flume in one open water hole of correspondence, is more beneficial for the cleaning and cooling of cutting tooth on each cutting structure.
Alternatively, cutting structure is stationary cutting structure, and the outlet flume in water hole extends along chip area, and bearing of trend It is consistent with the trend of the cutting tooth arragement direction on stationary cutting structure.In the program, the outlet flume in the open water hole Cutting tooth arragement direction of the bearing of trend on bit cutting structure, it is possible to increase drill bit Cutting movement efficiency and self-cleaning energy Hydraulic energy is directly used in cleaning, cooling and the Cutting movement of cutting tooth by power.
Alternatively, cutting structure is stationary cutting structure, the outlet flume median plane in water hole and corresponding fixed cutting The distance of the structure cloth flank of tooth is correspond to chip area in the distance on gauge circumference less than 0.5 times.In the program, according to adjacent solid Determine the distance between cutting structure, it is solid with corresponding to adjust the outlet flume median plane in open water hole in the range of certain proportion Determine the distance of the cutting structure cloth flank of tooth, the position of outlet flume more reasonably can be set, rationally using the space of chip area, have Beneficial to the cooling and cleaning of cutting tooth and stationary cutting structure, and cutting tooth is avoided to cause erosion because flow velocity is excessive.
Alternatively, the outlet flume width in water hole is correspond to chip area in the distance on gauge circumference less than 0.4 times. In this programme, it is the adjustment to exporting area of passage to the regulation of the outlet flume width in open water hole, it is however generally that, mistake Flow area is less, liquid flow through flow velocity is higher, but for the outlet flume width in open water hole, outlet flume width Spend the big or too small cooling for being all unfavorable for cutting tooth and cleaning performance.
Alternatively, the scallop in the vertical section of the outlet flume bearing of trend in water hole and drill axis angle be 20 °~ Between 80 °.
Alternatively, the sector formed with drill axis by the scallop in the vertical section of the outlet flume bearing of trend in water hole Angle overlay area reaches more than the 60% of correspondence cutting structure radial direction cloth tooth overlay area.
In such scheme, when jet cleaning and cooling are carried out to the drill bit with open water hole, due to drill bit sheet Body dimensional space is limited, and drilling fluid must carry out injection at an angle and just can guarantee that clean range and imitate cleaning with direction Fruit and cooling effect reach most preferably.And make spray angle control just meet the various spray angles of drill bit between 20 °~80 ° With the requirement of jeting area scope.The scallop in the vertical section of the outlet flume bearing of trend in open water hole and drill axis institute The segment angle overlay area of formation reaches more than the 60% of correspondence cutting structure radial direction cloth tooth overlay area, and can carry out directly Injection, meets the range of needs of drill bit cleaning and cooling.
Aforementioned this utility model main formula case and its each further selection scheme can be with independent assortments to form multiple schemes, Can adopt for this utility model and claimed scheme;And this utility model, (each non conflicting selection) select between and and Other can also independent assortment between selecting.Those skilled in the art after this utility model scheme is understood according to prior art and Common knowledge can understand there is multiple combination, be the claimed technical scheme of this utility model, and here does not do exhaustion.
The beneficial effects of the utility model:The stream range that open water hole is directly sprayed can reach well bottom zone More than 60%, jet directly cleans drill bit and carries shaft bottom landwaste, reduces loss and jet disturbance and the well of hydraulic energy The region of bottom cross flow, to form the harm for being vortexed and producing because being vortexed so as to be reduced or avoided, while the waterpower of drill bit can also be improved Utilization rate, enhances the heat transfer effect of drill bit and cutting tooth and drilling fluid, improves the cleaning of drill bit, takes rock and cooling capacity, subtracts The little abrasion of drill bit, improves the drilling performance and service life of drill bit.
The limitation in little water hole has been broken in open water hole of the present utility model, increased drill bit water hole and hydraulic structure design Motility, simplify drill bit water hole design it is loaded down with trivial details, improve the design efficiency of drill bit.
This utility model can complete bit hydraulic structure according to drill bit structure, for Different Strata, different drilling conditions Personalized designs, meet flow, the flow velocity distribution of drill bit, improve the waterpower matching on drill bit and stratum.Open water hole institute The Zone Full of covering directly can be sprayed, while widening the direct jet cleaning in water hole and cooling range, can be by changing Become the outlet flume shape in open water hole, in the big area of the high region of drill bit wing nose portion, cutter set density, broken rock workload Domain etc. needs the more tetanic region for connecing injection to carry out reinforcement injection, realizes cleaning, takes the optimization of rock and cooling.
Description of the drawings
Structural representations of the Fig. 1 for the drill bit with open water hole of this utility model embodiment;
Top views of the Fig. 2 for Fig. 1 drill bits;
Open water hole outlet schematic diagrams of the Fig. 3 for this utility model embodiment;
Open water hole radial direction overlay area schematic diagrams of the Fig. 4 for this utility model embodiment;
Open water hole and inner flow passage schematic diagram of the Fig. 5 for this utility model embodiment;
Upward views of the Fig. 6 for Fig. 1 sections A-A drill bits;
The corresponding parts title of labelling in accompanying drawing:1- drill bodies, 2- cutting structures, 3- chip areas, 4- cutting tooths, 5- water Hole, the outlet flume median plane in 9- water holes, the 10- cutting structure cloth flank of tooth, 11- inner flow passages, 12- chip areas are on gauge circumference Distance, the outlet flume in 15- water holes.
Specific embodiment
Following non-limiting examples are used to illustrate this utility model.
Referring to figs. 1 to shown in 6, a kind of drill bit with open water hole, including drill body 1, cutting structure 2, cutting Tooth 4, chip area 3, inner flow passage 11 and water hole 5, cutting structure 2 are arranged on drill body 1, and cutting tooth 4 is arranged on cutting structure 2 On, inner flow passage 11 is arranged in drill body 1, and chip area 3 is arranged between cutting structure 2, water hole 5 be arranged on inner flow passage 11 with It is, only one, water hole 5 that overall is in mouth between chip area 3 and the characteristics of connecting inner flow passage 11 and chip area 4, this utility model The big little shape in bottom (from the point of view of Fig. 4,5 facade/three-dimensional view, be exactly up big and down small), and 5 bottom opening of water hole directly with interior stream 11 open top insertion of road, 5 bottom opening area of water hole is consistent with 11 open top area of inner flow passage or size is substantially suitable.Make To select, as shown in this embodiment, cutting structure 2 is stationary cutting structure (such as the wing of PDC drill bit), and cutting structure 2 is in brill The hanging Cheng Liang in 1 center of head body, water hole 5 is arranged at below hanging beam, as shown in Fig. 1,2,4,6.It is preferred that water hole 5 is the big bottom of mouth Little cylinder, in star (or crying radial), the Arm portion of star forms outlet flume 15, water hole 5 to its cross-sectional outling 15 number of outlet flume it is identical with 2 number of cutting structure, as shown in this embodiment, outlet flume has 6, as shown in Fig. 3,5. The outlet flume 15 in water hole 5 extends along chip area 3, and the trend of bearing of trend and 4 arragement direction of cutting tooth on cutting structure 2 Unanimously.Further preferably, as shown in Figure 2,3,15 median plane 9 of outlet flume and the 2 cloth tooth of corresponding cutting structure in water hole 5 Face apart from b be correspondence chip area 3 at less than 0.5 times of the distance 12 on gauge circumference.The 15 width a of outlet flume in water hole 5 It is correspond to chip area 3 in the distance 12 on gauge circumference less than 0.4 times.As shown in figure 4, the outlet flume 15 in water hole 5 extends The scallop and drill axis angle α 1 in the vertical section in direction is that, between 20 °~80 °, in figure, angle α is ultimate value.Water hole 5 The scallop in the vertical section of 15 bearing of trend of outlet flume reaches corresponding with the segment angle overlay area d1 formed by drill axis More than the 60% of 2 radial direction cloth tooth overlay area d of cutting structure, i.e. d1/d >=60%.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all at this Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in this utility model Protection domain within.

Claims (10)

1. a kind of drill bit with open water hole, including drill body, cutting structure, cutting tooth, chip area, inner flow passage and water Hole, cutting structure are arranged on drill body, and cutting tooth is arranged on cutting structure, and inner flow passage is arranged in drill body, row Bits groove is arranged between cutting structure, and water hole is arranged between inner flow passage and chip area and connects inner flow passage and chip area, and which is special Levy and be:Only one, water hole, it is overall in the little shape in the big bottom of mouth, and water hole bottom opening is directly passed through with inner flow passage open top Logical, water hole bottom opening area is consistent with inner flow passage open top area or size is substantially suitable.
2. there is the drill bit in open water hole as claimed in claim 1, it is characterised in that:Cutting structure is fixed cutting knot Structure.
3. there is the drill bit in open water hole as claimed in claim 2, it is characterised in that:Stationary cutting structure is in drill body The hanging Cheng Liang in center, water hole is arranged at below hanging beam.
4. there is the drill bit in open water hole as claimed in claim 1, it is characterised in that:Water hole is the little cylinder in the big bottom of mouth, Its cross-sectional outling is in star.
5. there is the drill bit in open water hole as claimed in claim 1, it is characterised in that:The outlet flume number in water hole with cut Cut structure number identical.
6. there is the drill bit in open water hole as claimed in claim 1, it is characterised in that:Cutting structure is fixed cutting knot Structure, the outlet flume in water hole extend along chip area, and cutting tooth arragement direction on bearing of trend and stationary cutting structure is walked To consistent.
7. there is the drill bit in open water hole as claimed in claim 1, it is characterised in that:Cutting structure is fixed cutting knot Structure, the distance of the outlet flume median plane in water hole and the corresponding stationary cutting structure cloth flank of tooth are corresponding chip area in gauge circumference On less than 0.5 times of distance.
8. there is the drill bit in open water hole as claimed in claim 1, it is characterised in that:The outlet flume width in water hole is right Chip area is answered at less than 0.4 times of the distance on gauge circumference.
9. there is the drill bit in open water hole as claimed in claim 1, it is characterised in that:The outlet flume bearing of trend in water hole Vertical section scallop and drill axis angle be between 20 °~80 °.
10. there is the drill bit in open water hole as claimed in claim 1, it is characterised in that:The outlet flume extension side in water hole To the scallop in vertical section reach corresponding cutting structure radial direction cloth tooth with the segment angle overlay area formed by drill axis and cover More than the 60% of cover area.
CN201621092980.3U 2016-09-30 2016-09-30 A kind of drill bit with open water hole Withdrawn - After Issue CN206071461U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621092980.3U CN206071461U (en) 2016-09-30 2016-09-30 A kind of drill bit with open water hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621092980.3U CN206071461U (en) 2016-09-30 2016-09-30 A kind of drill bit with open water hole

Publications (1)

Publication Number Publication Date
CN206071461U true CN206071461U (en) 2017-04-05

Family

ID=58439549

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621092980.3U Withdrawn - After Issue CN206071461U (en) 2016-09-30 2016-09-30 A kind of drill bit with open water hole

Country Status (1)

Country Link
CN (1) CN206071461U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105317422A (en) * 2015-11-18 2016-02-10 中石化石油工程技术服务有限公司 Underground visual probing equipment and method
CN106194037A (en) * 2016-09-30 2016-12-07 西南石油大学 A kind of drill bit with open water hole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105317422A (en) * 2015-11-18 2016-02-10 中石化石油工程技术服务有限公司 Underground visual probing equipment and method
CN106194037A (en) * 2016-09-30 2016-12-07 西南石油大学 A kind of drill bit with open water hole
CN106194037B (en) * 2016-09-30 2019-04-16 成都海锐能源科技有限公司 A kind of drill bit with open water hole

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GR01 Patent grant
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20170405

Effective date of abandoning: 20190416

AV01 Patent right actively abandoned