CN203756049U - Petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blade - Google Patents

Petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blade Download PDF

Info

Publication number
CN203756049U
CN203756049U CN201420157268.1U CN201420157268U CN203756049U CN 203756049 U CN203756049 U CN 203756049U CN 201420157268 U CN201420157268 U CN 201420157268U CN 203756049 U CN203756049 U CN 203756049U
Authority
CN
China
Prior art keywords
bit
cutting teeth
movable auxiliary
row
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
Application number
CN201420157268.1U
Other languages
Chinese (zh)
Inventor
杭庆东
李建德
王强
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.)
Shengli Oil Field Is Contained Pyroxene Oil Tech Development Co Ltd
Original Assignee
Shengli Oil Field Is Contained Pyroxene Oil Tech Development Co Ltd
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 Shengli Oil Field Is Contained Pyroxene Oil Tech Development Co Ltd filed Critical Shengli Oil Field Is Contained Pyroxene Oil Tech Development Co Ltd
Priority to CN201420157268.1U priority Critical patent/CN203756049U/en
Application granted granted Critical
Publication of CN203756049U publication Critical patent/CN203756049U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blades. According to the technical scheme, a high-pressure water flow channel and a high-pressure air flow channel are arranged in an inner cavity of a bit body and communicated with a high-pressure water spray nozzle and a high-pressure air spray nozzle at the end of the bit body respectively, a plurality groups of fixation main blades are arranged at the end of the bit body, one row of arc cutting teeth and the other row of triangular cutting teeth are arranged on the fixation main blades, a plurality of groups of chutes are arranged at the outer edge of the end of the bit body, and the chutes are in matching connection with the movable auxiliary blades. The petroleum drilling PDC bit has the advantages that sediment can be timely cleaned by the high-pressure air spray nozzle spraying a high-pressure gas into drilling holes, so that the movable auxiliary blades can descend to solve the problem of clamping the bit; besides, the row of arc cutting teeth and the other row of triangular cutting teeth are arranged on the fixation main blades, so that abrasion of the cutting teeth can be greatly reduced, and well drilling efficiency is also improved; the bit is reasonable in structure and low in manufacture costs.

Description

A kind of PDC drill bit of the oil drilling with movable auxiliary wing
Technical field
The utility model relates to a kind of PDC drill bit, particularly a kind of PDC drill bit of the oil drilling with movable auxiliary wing.
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 201460741U, patent name is " a kind of variable PDC drill bit ", comprise top connection, lower contact, movable blades, fixed blade and tool rest, top connection is connected with lower contact, in the cavity between lower contact and outer tube, spring is housed, and outer tube is connected with tool rest, fixed blade is housed on tool rest, movable blades is contained on the trace pin being connected with tool rest, matches with fixed blade, and the movement locus of trace pin control movable blades.Can effectively reduce drilling cost, shorten well construction period, reduce the generation of slim-hole down-hole accident.But the problem of its existence is: complex structure, manufacture craft difficulty is large, and the application life of drill bit is shorter.
Chinese patent literature number is 103244056A, patent name is " a kind of variable PDC drill bit ", on the fixing wing of PDC drill bit, slidably inclined-plane wing is installed, in the time creeping into pressurization, sliding bevel wing up slides, it is maximum that bit diameter reaches, when trip-out, sliding bevel wing glides, and reaches bit diameter minimum, realizes the object of reducing.But the problem of its existence is: owing to not adopting power set, realize retraction by self gravitation, this easily causes the situation of bit freezing due to the reason of mud sandstone in down-hole, and then cause the accident, and it still needs to improve; In addition, the arrangement architecture of the wing of its drill bit is also unreasonable, and its drilling well effect is bad.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, a kind of PDC drill bit of the oil drilling with movable auxiliary wing is provided, by increasing gases at high pressure as retraction power set, solve the problem of drill bit bit freezing, and drill bit is rational in infrastructure, cost of manufacture is low, easily obtains large-scale promotion and uses.
Its technical scheme is: comprise drill body, high pressure spray water nozzle, movable auxiliary wing, skewed slot, high pressure spray valve, the fixing operator wing, arc milling tooth, triangle cutting teeth, the inner chamber of described drill body is provided with water under high pressure runner and high pressure gas runner, is communicated with respectively with high pressure spray water nozzle and the high pressure spray valve of drill body end; The end of described drill body is provided with the fixing operator of the many groups wing, and the fixing operator wing is provided with two row's cutting teeths, and a row is arc milling tooth, and another row is triangle cutting teeth; The end outer edge of described drill body is provided with many group skewed slots, and the described skewed slot auxiliary wing of activity that is connected is provided with the first cutting teeth and the second cutting teeth on the auxiliary wing of activity.
Above-mentioned triangle cutting teeth forms one by triangular structure, semicircular structure, and top is triangular structure, and bottom is semicircular structure.
Above-mentioned high pressure spray water nozzle is provided with many groups, and described high pressure spray valve is set to one group.
One side of the above-mentioned auxiliary wing of activity is ramp structure, is connected with the skewed slot of the end of drill body.
The beneficial effects of the utility model are: to drilling hole, spraying gases at high pressure, silt is cleaned out in time by high pressure spray valve, like this, movable auxiliary wing can land, thereby remove bit freezing problem; In addition, by a row is set for arc milling tooth on the fixing operator wing, another row, for triangle cutting teeth, can reduce the wearing and tearing of cutting teeth greatly, has also improved the efficiency of drilling well; Drill bit structure of the present utility model is reasonable, and cost of manufacture is low, easily obtains large-scale promotion and uses.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is side schematic views of the present utility model;
Accompanying drawing 3 is structure charts of triangle cutting teeth of the present utility model;
In upper figure: drill body 1, high pressure spray water nozzle 2, movable auxiliary wing 3, skewed slot 4, high pressure spray valve 5, the fixing operator wing 6, arc milling tooth 7, triangle cutting teeth 8, high pressure gas runner 9, water under high pressure runner 10, the first cutting teeth 3.1, the second cutting teeth 3.2, triangular structure 7.1, semicircular structure 7.2.
Detailed description of the invention
1-3 by reference to the accompanying drawings, the utility model will be further described:
The utility model comprises drill body 1, high pressure spray water nozzle 2, movable auxiliary wing 3, skewed slot 4, high pressure spray valve 5, the fixing operator wing 6, arc milling tooth 7, triangle cutting teeth 8, the inner chamber of described drill body 1 is provided with water under high pressure runner 10 and high pressure gas runner 9, is communicated with respectively with high pressure spray water nozzle 2 and the high pressure spray valve 5 of drill body end; The end of described drill body 1 is provided with the fixing operator of the many groups wing 6, and the fixing operator wing 6 is provided with two row's cutting teeths, and a row is arc milling tooth 7, and another row is triangle cutting teeth 8; The end outer edge of described drill body 1 is provided with many group skewed slots 4, and the described skewed slot 4 auxiliary wing 3 of activity that is connected is provided with the first cutting teeth 3.1 and the second cutting teeth 3.2 on the auxiliary wing 3 of activity.
Wherein, triangle cutting teeth 8 forms one by triangular structure 7.1, semicircular structure 7.2, and top is triangular structure 7.1, and bottom is semicircular structure 7.2.In addition, high pressure spray water nozzle 2 is provided with many groups, and described high pressure spray valve 5 is set to one group; One side of the auxiliary wing 3 of above-mentioned activity is ramp structure, is connected with the skewed slot 4 of the end of drill body 1.
When use, when normal lower boring, due to gravity reason, movable auxiliary wing moves to down, in the time of drilling well, and the rotation of the fixing operator wing, drive triangle cutting teeth 8 in front rotation, arc milling tooth 7 is below further rotated, meanwhile, and due to the squeezing action on stratum, movable auxiliary wing is moved on skewed slot, like this, the diameter of drill bit is expanded, form expansion bit; And carry drill bit on drilling well completes time, likely occur that silt blocks the whereabouts of movable auxiliary wing, cause bit freezing, at this time, to drilling hole, spraying gases at high pressure, silt is cleaned out in time by high pressure spray valve, like this, movable auxiliary wing can land, thereby removes bit freezing problem.
In addition, by a row is set for arc milling tooth 7 on the fixing operator wing, another row, for triangle cutting teeth 8, can reduce the wearing and tearing of cutting teeth greatly, has also improved the efficiency of drilling well.Certainly, together with arc milling tooth 7 can load in mixture with triangle cutting teeth 8, also can improve drilling efficiency, of the present utility model rational in infrastructure, cost of manufacture is low, easily obtains large-scale promotion and uses.

Claims (4)

1. one kind has the oil drilling PDC drill bit of movable auxiliary wing, it is characterized in that: comprise drill body (1), high pressure spray water nozzle (2), movable auxiliary wing (3), skewed slot (4), high pressure spray valve (5), fixing the operator wing (6), arc milling tooth (7), triangle cutting teeth (8), the inner chamber of described drill body (1) is provided with water under high pressure runner (10) and high pressure gas runner (9), is communicated with respectively with high pressure spray water nozzle (2) and the high pressure spray valve (5) of drill body end; The end of described drill body (1) is provided with many group fixing operator wings (6), and the fixing operator wing (6) is provided with two row's cutting teeths, and a row is arc milling tooth (7), and another row is triangle cutting teeth (8); The end outer edge of described drill body (1) is provided with many group skewed slots (4), and described skewed slot (4) the auxiliary wing of activity (3) that is connected is provided with the first cutting teeth (3.1) and the second cutting teeth (3.2) on the auxiliary wing of activity (3).
2. the PDC drill bit of the oil drilling with movable auxiliary wing according to claim 1, it is characterized in that: described triangle cutting teeth (8) forms one by triangular structure (7.1), semicircular structure (7.2), top is triangular structure (7.1), and bottom is semicircular structure (7.2).
3. the PDC drill bit of the oil drilling with movable auxiliary wing according to claim 1, is characterized in that: described high pressure spray water nozzle (2) is provided with many groups, and described high pressure spray valve (5) is set to one group.
4. the PDC drill bit of the oil drilling with movable auxiliary wing according to claim 1, is characterized in that: a side of the auxiliary wing of described activity (3) is ramp structure, is connected with the skewed slot (4) of the end of drill body (1).
CN201420157268.1U 2014-04-02 2014-04-02 Petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blade Active CN203756049U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420157268.1U CN203756049U (en) 2014-04-02 2014-04-02 Petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420157268.1U CN203756049U (en) 2014-04-02 2014-04-02 Petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blade

Publications (1)

Publication Number Publication Date
CN203756049U true CN203756049U (en) 2014-08-06

Family

ID=51251337

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420157268.1U Active CN203756049U (en) 2014-04-02 2014-04-02 Petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blade

Country Status (1)

Country Link
CN (1) CN203756049U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443043A (en) * 2014-09-27 2016-03-30 中国石油化工集团公司 PDC drill bit capable of changing blade number

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443043A (en) * 2014-09-27 2016-03-30 中国石油化工集团公司 PDC drill bit capable of changing blade number

Similar Documents

Publication Publication Date Title
CN202117705U (en) Water cutting device for converting high pressure and low pressure
CN201943585U (en) Sapphire helical composite jet-nozzle jet-cutting deep well drilling bit
CN103775010A (en) Borehole cleaning tool for horizontal-section gas drilling
CN102071876A (en) Multistage reducing combined drilling tool
CN203756049U (en) Petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blade
CN202181847U (en) PDC drilling and expanding double-wing combined drill bit
CN208981966U (en) Twin-stage drill bit
CN202926244U (en) Guide screw drilling tool with rotatable centralizer
CN203559791U (en) Shaft bottom negative-pressure upward-movement nozzle PDC drill
CN203756048U (en) Mixed assembly petroleum drilling polycrystalline diamond compact (PDC) drill bit
CN203035094U (en) Water jet flow kerf induced spraying device in drill hole
CN203669752U (en) Six-blade PDC bit for oil drilling
CN202073499U (en) PDC (polycrystalline diamond compact) drilling and expanding single-wing combined drill bit
CN202338203U (en) Open-hole cave-making tool
CN201292773Y (en) PDC drill for drilling flexible and hard interactive strata
CN203452651U (en) Strong cone PDC (Polycrystalline Diamond Compact) vibration reduction acceleration drill bit
CN103216196A (en) Drilling head capable of drilling into rock used for engineering pile
CN203756047U (en) Petroleum drilling polycrystalline diamond compact (PDC) bit with protection covers
CN202706923U (en) Reinforced polycrystalline diamond compact (PDC) drill
CN203129955U (en) Broaching jumbolter
CN202850871U (en) Double-bit drilling device for deep frozen earth of mine
CN202483456U (en) Novel arc-head petroleum drill bit
CN204476288U (en) A kind of anti-Gravel drill bit
CN202140023U (en) Portable drill bit
CN204492668U (en) A kind of product type circle lip diamond-impregnated bit gets rid of rock device automatically

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model