CN203756048U - Mixed assembly petroleum drilling polycrystalline diamond compact (PDC) drill bit - Google Patents

Mixed assembly petroleum drilling polycrystalline diamond compact (PDC) drill bit Download PDF

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Publication number
CN203756048U
CN203756048U CN201420157158.5U CN201420157158U CN203756048U CN 203756048 U CN203756048 U CN 203756048U CN 201420157158 U CN201420157158 U CN 201420157158U CN 203756048 U CN203756048 U CN 203756048U
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China
Prior art keywords
cutting
cutting teeth
drill bit
drill
teeth
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Active
Application number
CN201420157158.5U
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Chinese (zh)
Inventor
杭庆东
李建德
王强
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Shengli Oil Field Is Contained Pyroxene Oil Tech Development Co Ltd
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Shengli Oil Field Is Contained Pyroxene Oil Tech Development Co Ltd
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Priority to CN201420157158.5U priority Critical patent/CN203756048U/en
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Abstract

The utility model relates to a mixed assembly petroleum drilling polycrystalline diamond compact (PDC) drill bit. According to the technical scheme, a connecting male head is arranged at the bottom of a drill bit body, multiple groups of cutting blades are disposed at the top of the drill bit body, multiple groups of round cutting teeth and triangle cutting teeth are arranged on surfaces of the cutting blades, the triangle cutting teeth are installed at the top of the cutting blades and form cutting teeth together with the round cutting teeth, a water orifice is disposed at the root of each group of cutting blades, and multiple groups of high-pressure air nozzles are mounted at positions between the cutting blades and outer walls of the drill bit body. The mixed assembly PDC drill bit has the advantages that the multiple groups of round cutting teeth and triangle cutting teeth which are arranged in an intersecting mode are disposed on surfaces of the cutting blades so that the well drilling effect is good, the well drilling efficiency is increased, the damage rate of the drill bit is reduced, moreover, the multiple groups of high-pressure air nozzles are mounted at positions between the cutting blades and the outer walls of the drill bit body so that balling can be effectively avoided during well drilling, and the well drilling efficiency is increased.

Description

A kind of PDC drilling bit for petroleum well drilling of mixed packing
Technical field
The utility model relates to the drill bit that a kind of oil drilling is used, particularly a kind of PDC drilling bit for petroleum well drilling of mixed packing.
Background technology
Requisite fractured rock instrument when drill bit is drilling well, mainly contain rock bit, diamond bit and drag bit three classes, wherein, 1. rock bit, formed by bit body, tooth pawl, gear wheel, bearing, hydrophthalmia etc., divide two kinds, mill teeth type and inserted type by cone structure, divide two kinds, sealing (or blow-by) rolling bearing and sealing (or blow-by) sliding bearing by bearing arrangement, rock bit is applicable to bore various stratum, at present most widely used general.2. diamond bit, only limits the use of at first in hard formation, the positive expanding day of its kind and the scope of application, though the price of drill bit is high, and long working life, as select rationally, can obtain good economic effect; 3. drag bit, simple in structure, easily manufactured, bore soft formation speed, but moment of torsion is larger while creeping into, fragile drilling tool and equipment.
Chinese patent literature number is 201193483, patent name is " PDC drill with double-row cutting tooth ", mainly formed by bit matrix, wing, front-seat PDC cutting teeth, rear row PDC cutting teeth, nozzle and main chip area, on wing, between front-seat PDC cutting teeth and rear row PDC cutting teeth, be provided with chip removal runner and auxiliary chip area.The landwaste that after in drilling process, row PDC cutting teeth machines away can be discharged in hole annulus by chip removal runner and auxiliary chip area by the drilling fluid going out from nozzle ejection in time, thereby can extend drilling life of bit, increases footage per bit.But do not adopt intersection cutting teeth to complete drilling well.
Chinese patent literature number is 2623865, patent name is " a kind of steel-tooth composite teeth rock bit ", on gear wheel, interval arranges steel tooth and the steel-tooth composite teeth rock bit of the tooth be made up of high-abrasive material, the steel tooth cutting structure that has changed rock bit is all steel tooth, or the method for welding hard alloy blocks on steel tooth, the utility model is owing to being that high-abrasive material tooth is arranged on the teeth groove of the cone body that milling is good and is shaped, difficult drop-off, be arranged in cone body with steel space of teeth simultaneously, make steel-tooth bit in high-revolving, abrasion resistance and the cutting ability of drill bit are strengthened, improve drilling life of bit.Do not adopt difform intersection cutting teeth to complete drilling well yet.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of PDC drilling bit for petroleum well drilling of mixed packing is provided, and by regular installation triangle cutting teeth and circular cutting teeth on cutting wing, improves the efficiency of drilling well.
Its technical scheme is: comprise and connect male, groove, drill body, cutting wing, circular cutting teeth, triangle cutting teeth, water jet, anti-mud drum groove, the bottom of described drill body is provided with connection male, the middle part of drill body is provided with the groove for rotary drill bit body, the top of drill body is provided with many group cutting wings, the surface of described cutting wing is laid with the circular cutting teeth of many groups and triangle cutting teeth, described triangle cutting teeth is arranged on the top of cutting wing, with circular cutting teeth composition cutting teeth; Root position at every group of cutting wing is provided with water jet, and the position between described cutting wing and the outer wall of drill body is provided with many group high pressure spray valves, and high pressure spray valve is connected to the high-pressure jet device on well head by the inner chamber of drill body.
The bottom of above-mentioned triangle cutting teeth is arcuate structure, and top is triangular structure, forms overall structure.
The beneficial effects of the utility model are: by being laid with the circular cutting teeth of many groups and triangle cutting teeth on the surface of cutting wing, the two intersects installation, triangle cutting teeth is arranged on the top of cutting wing, with circular cutting teeth composition cutting teeth, can make the better effects if of drilling well, improve the efficiency of drilling well, reduced drill bit spoilage; In addition, position between cutting wing and the outer wall of drill body is provided with many group high pressure spray valves, by the ejection of gases at high pressure, the mud drum that sometimes may occur is sprayed timely, can more effectively avoid drilling process to rush the appearance of mud drum, improve drilling efficiency.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is structure charts of triangle cutting teeth of the present utility model;
In upper figure: connect male 1, groove 2, drill body 3, cutting wing 4, circular cutting teeth 5, triangle cutting teeth 6, water jet 7, anti-mud drum groove 8, high pressure spray valve 9; Triangular structure 6.1, arcuate structure 6.2.
Detailed description of the invention
1-2 by reference to the accompanying drawings, the utility model will be further described:
The utility model comprises connection male 1, groove 2, drill body 3, cutting wing 4, circular cutting teeth 5, triangle cutting teeth 6, water jet 7, anti-mud drum groove 8, the bottom of described drill body 3 is provided with and connects male 1, the middle part of drill body 3 is provided with the groove 2 for rotary drill bit body, the top of drill body 3 is provided with many group cutting wings 4, the surface of described cutting wing 4 is laid with the circular cutting teeth 5 of many groups and triangle cutting teeth 6, described triangle cutting teeth 6 is arranged on the top of cutting wing 4, form cutting teeth with circular cutting teeth 5, the side of cutting wing 4 is provided with multiple circular cutting teeths 5, root position at every group of cutting wing 4 is provided with water jet 7, and the position between described cutting wing 4 and the outer wall of drill body 3 is provided with many group high pressure spray valves 9, and high pressure spray valve 9 is connected to the high-pressure jet device on well head by the inner chamber of drill body 3.
Wherein, the bottom of triangle cutting teeth 6 is arcuate structure 6.2, and top is triangular structure 6.1, forms overall structure, fixes by arcuate structure and the groove fit on cutting wing of bottom.
By being laid with the circular cutting teeth 5 of many groups and triangle cutting teeth 6 on the surface of cutting wing, the two intersects installation, triangle cutting teeth 6 is arranged on the top of cutting wing 4, form cutting teeth with circular cutting teeth 5, can make the better effects if of drilling well, improve the efficiency of drilling well, reduced drill bit spoilage.
In addition, the position between cutting wing 4 and the outer wall of drill body 3 is provided with many group high pressure spray valves, by the ejection of gases at high pressure, the mud drum that sometimes may occur is sprayed timely, can more effectively avoid drilling process to rush the appearance of mud drum, improve drilling efficiency, it is simple in structure, remarkably productive, compared with documents, reduce the improving cost of drill bit, the effect of its anti-mud drum can reach equally, and increased after anti-mud water spout, effect is better.

Claims (2)

1. the PDC drilling bit for petroleum well drilling of a mixed packing, it is characterized in that: comprise and connect male (1), groove (2), drill body (3), cutting wing (4), circular cutting teeth (5), triangle cutting teeth (6), water jet (7), anti-mud drum groove (8), the bottom of described drill body (3) is provided with and connects male (1), the middle part of drill body (3) is provided with the groove (2) for rotary drill bit body, the top of drill body (3) is provided with many group cutting wings (4), the surface of described cutting wing (4) is laid with the circular cutting teeth of many groups (5) and triangle cutting teeth (6), described triangle cutting teeth (6) is arranged on the top of cutting wing (4), with circular cutting teeth (5) composition cutting teeth, root position at every group of cutting wing (4) is provided with water jet (7), position between described cutting wing (4) and the outer wall of drill body (3) is provided with many group high pressure spray valves (9), and high pressure spray valve (9) is connected to the high-pressure jet device on well head by the inner chamber of drill body (3).
2. the PDC drilling bit for petroleum well drilling of a kind of mixed packing according to claim 1, is characterized in that: the bottom of described triangle cutting teeth (6) is arcuate structure (6.2), and top is triangular structure (6.1), forms overall structure.
CN201420157158.5U 2014-04-02 2014-04-02 Mixed assembly petroleum drilling polycrystalline diamond compact (PDC) drill bit Active CN203756048U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420157158.5U CN203756048U (en) 2014-04-02 2014-04-02 Mixed assembly petroleum drilling polycrystalline diamond compact (PDC) drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420157158.5U CN203756048U (en) 2014-04-02 2014-04-02 Mixed assembly petroleum drilling polycrystalline diamond compact (PDC) drill bit

Publications (1)

Publication Number Publication Date
CN203756048U true CN203756048U (en) 2014-08-06

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CN201420157158.5U Active CN203756048U (en) 2014-04-02 2014-04-02 Mixed assembly petroleum drilling polycrystalline diamond compact (PDC) drill bit

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CN (1) CN203756048U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105041222A (en) * 2015-07-13 2015-11-11 中国石油天然气集团公司 Inner-chip removal polycrystalline diamond compact (PDC) bit
CN105971519A (en) * 2016-06-29 2016-09-28 四川川庆石油钻采科技有限公司 Ridge-type impregnated diamond bit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105041222A (en) * 2015-07-13 2015-11-11 中国石油天然气集团公司 Inner-chip removal polycrystalline diamond compact (PDC) bit
CN105971519A (en) * 2016-06-29 2016-09-28 四川川庆石油钻采科技有限公司 Ridge-type impregnated diamond bit

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