CN106761423A - A kind of multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit - Google Patents
A kind of multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit Download PDFInfo
- Publication number
- CN106761423A CN106761423A CN201611202980.9A CN201611202980A CN106761423A CN 106761423 A CN106761423 A CN 106761423A CN 201611202980 A CN201611202980 A CN 201611202980A CN 106761423 A CN106761423 A CN 106761423A
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- China
- Prior art keywords
- clamper
- mounting groove
- cutting tooth
- drill bit
- drill body
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
Abstract
The invention provides a kind of multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit, including drill body and clamper, several clamper mounting grooves are provided with the drill body upper surface, clamper is separately installed with each clamper mounting groove, cutting tooth detachably is installed on clamper, the relative angle and position of clamper and mounting groove are adjustable.The present invention can study the broken rock behavior of drill bit and efficiency under indivedual teeth and different cloth tooth mode, increased the service efficiency of drill bit, reduce experimental cost.Because nozzle is detachable, can as needed decide whether that jet nozzle is installed, the jet runner of different angles is machined with inside different spray nozzles, to study efficiency during relative to gear piece different jet angle impacts rock, cutting carring.Due to being machined with jet runner respectively in gear piece both sides on drill body, therefore, can nozzle be installed in gear piece different relative position to study influence of the PDC teeth with water jet relative position matching relationship for broken rock.
Description
Technical field
The present invention relates to drilling experiment apparatus field, particularly a kind of multifunctional high pressure water jet-PDC teeth joint is broken
Rock tests drill bit.
Background technology
Drill bit as in drilling well industry commonly use rock crushing tool, its performance quality and whether matched with drilling parameter,
Directly affect drilling cost and drilling quality.(Polycrystalline Diamond Compact Bit gather PDC drill bit
Diamond compact bit) it is the class New well drilling instrument got up with the development of PDC composites.PDC is bored
Head is to use artificial composite polycrystal-diamond as cutting element with cutting way fractured rock, is drag bit senior
Reproduction under the conditions of technical matters.PDC drill bit has self-sharpening, and average rate of penetration is often 2 times~3 times of rock bit；
Due to no movable part, the danger of lost cone is eliminated, made a trip effectively reducing to be decreased while down-hole accident occurs
Number of times；Required the pressure of the drill slow-speed of revolution is high during drilling, in easy deviation strata, can anti-oblique well straightening well；Can be with mud motor, whirlpool
Wheel drilling tool uses cooperatively to bore directional well；Deep-well (high temperature well) can be bored, can be worked under less than 500 DEG C of environment.The present whole world
The consumption of PDC drill bit and proportion rises year by year in drilling well total footage, at present, the drill footage of PDC drill bit is alreadyd exceed
The 60% of total drill footage.
PDC drill bit coordinates to reach more preferable rock breaking efficiency with high-pressure water jet, and the research of decades has been carried out.
Related theory and experiment proves that mechanical tooth has huge development potentiality with jet combined broken rock mode.High-pressure water jet broken rock
It is, come impact rock, crackle to be formed in rock interior using the concentration energy of jet, utilizes " water wedge " effect fractured rock, is boring
Can direct fractured rock when meeting soft rock strata.Jet impulse rock forms crackle and removes landwaste, is received drill bit is effectively reduced
While power so that drill bit more easily wedging rock, so as to improve broken rock drilling efficiency, shorten drilling period, reduce life
Produce cost.Water jet can also cool down drill bit, and this causes that drill bit works at a lower temperature, reduce bit grinding loss rate, extension
Service life.So as to mechanical tooth and water jet influence each other and mutually promote during oil/gas drilling catalase.
All the time, the parameter optimization of PDC drill bit efficiency of breaking rock, the parameter optimization of hydraulic combined-breaking rock are that PDC is bored
The focus and difficult point of head correlative study, its research method is based on Software Numerical Simulation and physical simulation experiment.At present, physics reality
Testing the conventional method of simulation has：1. PDC monodentate cutting experiments are carried out on the shaping machine of repacking or in the equipment of designed, designed；
2. laboratory test is carried out using small-sized PDC drill bit.But both approaches are respectively present the limitation of itself with deficiency：
1st, the shaping machine of repacking can provide stabilization, uniform feeding force, and three-dimensional dynamometry is disposed on the knife rest of planer
After (axial force, tangential force, side force) sensor, can be with the stressing conditions of real-time monitoring monodentate broken rock；Meanwhile, by changing
PDC teeth, change related experiment parameter, the efficiency of breaking rock that can be tested under different condition all allow shaping machine to become research PDC
A kind of important means of monodentate broken rock stressing conditions.But, it is limited in that：A, shaping machine are by underground PDC teeth with brill
The actual high-speed screw feed conversion of motion of head rotation is that speed straight line is fed motion, and thus cutting tooth, radially part becomes
The ablation volume of change ablation volume equal under assuming the every part of cutting tooth at the same speed, while have ignored cutting speed for PDC
The stressing influence of tooth；Another part experiment is that after tool arm is fixed on into certain altitude, rock sample clamping device drives rock sample to rotate, and goes
Axial feed motion is fallen, i.e. only rotary motion, the influence this, simplifies axial force to tangential force；B, PDC drill bit are cut
It is a statically indeterminate problem to cut tooth stress, only analyzes force on PDC cutter from monodentate, without considering shadow of the adjacent tooth to analyzed tooth
Ring, this results in crushed zone size, the shape that cutting tooth cut and all therefore changes, and the research generation for cutting force is larger
Error.
2nd, it is the special experiment drill bit of development and design to carry out laboratory test using small-sized PDC drill bit, is passed through in laboratory
Drill bit drive system and high-pressure pump realize that the PDC drill bit at scene coordinates the simulation of broken rock with high-pressure water jet.Laboratory can be with
By adjust drill bit drive system change drill bit the pressure of the drill, rotating speed, feed rate, adjusting high-pressure pump system fading margin jet pressure,
So as to study influence of these parameters for combined-breaking rock efficiency.But, because the small-sized PDC drill bit of design can not integrally be reequiped
Dismounting, causes it to be limited in that：Geometric parameter (tooth cutting angle, cloth tooth mode, flow angle, tooth and the jet phase of A, drill bit
To position relationship etc.) cannot flexible modulation, often change a test parameters, the new experiment drill bit of processing need to be redesigned, waste
While manpower and materials, the drill bit that redesign is processed cannot ensure in addition to the parameter to be changed, with before plus
The drill bit of work is completely the same, so as to introduce experimental error；B, in rock break-off process, on the premise of drill bit is changed without, due to
All PDC teeth influence each other on drill bit, and drill bit is that global facility is non-dismountable, and cloth tooth scheme cannot change, therefore can only grind
Study carefully the overall behavior and effect in broken rock of drill bit under single cloth tooth mode, and cannot accurately study indivedual minority PDC teeth broken
Effect during rock, which results in the macroscopic appearance that can only obtain drill bit broken rock, it is impossible to careful analysis experimental phenomena, can only
Macroscopical conclusion is obtained with understanding.
In general, existing published experimental technique and device cannot simultaneously meet following conditions：1. reality is met
Engineering specifications, simulates operating mode；2. each part is detachable, can respectively study effect and influence of the PDC teeth for broken rock.
The content of the invention
In order to the cutting tooth for solving the problems, such as existing drill bit is non-dismountable and can not adjust, the invention provides a kind of many work(
Can high-pressure water jet-PDC teeth combined-breaking rock experiment drill bit, the multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit
Cutting tooth not only can be with dismounting and change, and its position and angle can be adjusted, and be suitable for studying indivedual teeth and difference
The broken rock behavior of drill bit and efficiency under cloth tooth mode, increased the service efficiency of drill bit, reduce experimental cost.
The technical solution adopted for the present invention to solve the technical problems is：A kind of multifunctional high pressure water jet-PDC teeth connection
Broken rock experiment drill bit, including drill body and the clamper for installing fixed cutting tooth are closed, clamper is arranged at drill body
Working end, clamper is detachably connected with drill body, and clamper can be rotated, the multifunctional high pressure water jet-PDC teeth
Combined-breaking rock experiment drill bit also includes the angle adjusting mechanism for adjusting clamper rotational angle.
Clamper contains clamp body and compresses piece, and clamp body is in the form of a column, and clamp body and compression piece pass through
After mode connects for screw cutting tooth can be fixed on clamper, the working end of drill body is provided with the clamping for installing holder
Device mounting groove, position of the clamper on drill body can be adjusted.
The edge of clamp body is provided with breach, and the breach contains cutting tooth mounting surface and compresses piece mounting surface, the cutting
Tooth mounting surface and compression piece mounting surface are provided with for accommodating installation each parallel to the axis of clamp body in cutting tooth mounting surface
The cutting tooth mounting groove of cutting tooth, is compressed piece and is fixedly connected with piece mounting surface is compressed by the screw, a part for cutting tooth
In cutting tooth mounting groove, the one end for compressing piece abuts with cutting tooth.
More than 90 ° and less than 180 °, cutting tooth is disc-shaped to angle between cutting tooth mounting surface and compression piece mounting surface,
Cutting tooth compresses described one end of piece parallel to cutting tooth mounting surface, the depth of the thickness more than cutting tooth mounting groove of cutting tooth
It is inclined-plane, the inclined-plane is parallel with cutting tooth mounting surface, along the radial direction of clamp body, one end of cutting tooth is installed positioned at cutting tooth
Outside groove, the part that cutting tooth is located in cutting tooth mounting groove matches with the shape of cutting tooth mounting groove.
Clamper is located fully or partially in clamper mounting groove, and the diameter parallel of clamp body is installed in clamper
Groove opens up direction, and clamper mounting groove is prevented from clamper and departs from drill body along the centerline direction of drill body, bore
Upward, the position of cutting tooth is corresponding with the upper end of clamper mounting groove for the working end of head body.
Clamper mounting groove is opened up along the radial direction of drill body, and clamp body is in oblate column, and clamper can be with folder
The axis of holder body is rotated for axle, and the section configuration of clamper mounting groove is arc, and the radius of the arc is equal to clamper sheet
The radius of body, clamp body can in clamper mounting groove radially sliding along drill body
The angle adjusting mechanism includes cutting angle adjusting key, an internal keyway and a plurality of outside keyway, an internal keyway edge
The inner surface for being radially disposed at clamper mounting groove of drill body, a plurality of outside keyway being axially set in along clamp body
The distance between the outer surface of clamp body, two adjacent outside keyways are equal, and the cutting angle adjusting key is located at outside one
Between keyway and an internal keyway.
Drill body is cylindrical in shape structure, and clamper mounting groove runs through the interior appearance of drill body along the radial direction of drill body
Face, drill body contains a plurality of clamper mounting groove, and a plurality of clamper mounting groove is circumferentially uniform in the working end of drill body
What is matched in distribution, clamper mounting groove is provided with least one clamper, and the arc institute between two adjacent outside keyways is right
The central angle answered is 5 °~15 °.
Drill body is cylindrical in shape structure, and the sprue of insertion vertically is contained at the middle part in drill body, in drill body
Also contain some cross connection runners and some vertical communication runners, cross connection runner sets along the radial direction of drill body
Put, along the axially arranged of drill body, one section of sprue is the piston mounting holes for installing piston to vertical communication runner, it is living
Piston is provided with plug mounting hole, the position of piston is corresponding with the working end of drill body, and piston is tightly connected with drill body,
Piston is contained within inner flow passage, and sprue can pass sequentially through the inner flow passage, cross connection runner and vertical communication runner and drill bit
Connected outside the working end of body.
Piston is cylindrical, and the inner flow passage includes blind hole and pod apertures, and blind hole is located at one end of piston, and blind hole is towards drill bit
The connection end of body, pod apertures are opened up along the radial direction of piston, and blind hole is connected with the outside of piston by pod apertures, the appearance of piston
Circumferentially arranged with stream ring is stored, it is annular groove to store stream ring, stores and annular channel is formed between stream ring and piston mounting holes, stores stream ring in face
Position it is corresponding with the position of pod apertures, the position of cross connection runner is corresponding with the position of the annular channel, laterally connects
Passage flow duct is tangent with the annular channel, and the working end of drill body is provided with the clamper mounting groove for installing holder, clamping
Device mounting groove is opened up along the radial direction of drill body, and a transverse direction is respectively provided with along the both sides of the circumferential clamper mounting groove of drill body
Connection runner, every cross connection runner is respectively connected with the work of a plurality of vertical communication runner, vertical communication runner and drill body
Make the corresponding jet in end and be removably provided with nozzle or plug.
What is matched between piston mounting holes and piston is arranged with locating dowel, and locating dowel is located at the working end of drill body, fixed
Position post is regular prism shape structure, and side and the clamper mounting groove of locating dowel connect one to one, and bolt passes through clamper
Clamp body in mounting groove is connected with locating dowel, and upward, the upper end of piston is provided with positioning for the working end of drill body
Ring, is provided with the positioning step matched with the locating ring in the upper end of locating dowel, be provided with for screwing piston in the upper end of piston
Location hole.
The beneficial effects of the invention are as follows：It is removable in clamper mounting groove because the present invention includes drill body and clamper
Unload and clamper is installed, detachable on clamper to be provided with cutting tooth, the relative position of clamper and mounting groove is adjustable, therefore can
Change relative position of flow angle, the cutting angle of cutting tooth, jet and cutting tooth etc. by changing different clampers, from
And change the quantity of cutting tooth and cloth tooth mode, the broken rock behavior of drill bit and effect under indivedual teeth and different cloth tooth modes can be studied
Rate；And in testing, if occurring in that the situation that cutting tooth crumbles or damages, when fritter is damaged, cutting tooth need to only be rotated
180 degree, a section for damaging is in close contact with piece is compressed, and be fixed and clamped piece；When bulk is damaged, then cutting tooth is changed, saved
About experiment consumptive material, increased the service efficiency of drill bit.
In addition, drill bit is made up of drill body, connection piston, locating dowel, and it is not a global facility, therefore each
Part is detachable, reduces difficulty of processing, processing is more accurately facilitated, and may be sealed containing impurity in drilling fluid when testing
Stifled runner, dismountable part makes it possible dredging runner, reduces the maintenance difficulties of drill bit, improves its service life.
Further, because drill body is provided with sprue and drilling fluid runner, connection sprue is provided with connection piston
With the interface channel of drilling fluid runner, therefore drill bit can coordinate high-pressure water jet, realize that axial rotary is sent into and adjusts each waterpower
Parameter, fully simulates different underground workings.Each vertical communication flow field end is machined with connection screw thread hole, can be different according to demand
The nozzle of runner of the connection with different angles, so as to study the influence by jet auxiliary rock.Choose cloth tooth scheme,
After completing cloth tooth, because nozzle is detachable, according to whether influence of the jet for PDC cutter breaking rocks is further studied,
Decide whether that jet nozzle is installed.The jet runner of different angles is machined with inside different spray nozzles, to study relative to cutting tooth
Efficiency when different jet angle impacts rock, cutting carring.The flow angle according to needed for experiment needs selection, then installs spray
Mouth, when installation nozzle threads need to be completely screwed into, it is ensured that when the identical flow angle of research is tested, jet impulse cutting tooth it is relative
Position, angle are certain.Due to being machined with jet runner respectively in cutting tooth both sides on drill body, therefore, can be in cutting tooth not
Same relative position installs nozzle to study influence of the PDC teeth with water jet relative position matching relationship for broken rock.Completion is penetrated
After the assembling of flow nozzle, will be not required to that plug of being screwed at the position of nozzle is installed, block fluidic channel；Then by drill body end
Drilling rod is screwed in, the assembling of experiment drill bit is completed and is connected.Make drill bit rotary drilling under power-equipment driving, while realizing cutting
The spiral and axial feeding of tooth.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, of the invention to show
Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.
Fig. 1 is the surface structure after multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit assembling in the present invention
Schematic diagram.
Fig. 2 is the assembling main sectional view of multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention.
Fig. 3 is the assembling plan view of multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention.
Fig. 4 is cutd open for the master of drill body in multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention
View.
Fig. 5 is the vertical view of drill body in multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention
Figure.
Fig. 6 is the profile in Fig. 4 along A-A directions.
Fig. 7 is cutd open to connect the master of piston in multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention
View.
Fig. 8 is the master of clamp body in multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention
View.
Fig. 9 in multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention clamp body bow
View.
Figure 10 is cutd open to position the master of six sides in multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention
View.
Figure 11 is the vertical view of locating dowel in multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention
Figure.
Figure 12 is a kind of section of nozzle in multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention
Figure.
Figure 13 in multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit in the present invention another nozzle cut open
Face figure.
11st, drill body；12nd, piston；13rd, locating dowel；14th, clamper；
111st, sprue；112nd, piston mounting holes；113rd, it is expanding；114th, clamper mounting groove；115th, cutting angle adjusting key；
121st, blind hole；122nd, sealing ring；123rd, stream ring is stored；124th, pod apertures；125th, locating ring；126th, location hole；
131st, positioning step；
141st, clamp body；142nd, cutting tooth；143rd, piece is compressed；144th, outside keyway；145th, fixing hole；146th, cutting tooth
Mounting surface；147th, piece mounting surface is compressed；
21st, cross connection runner；22nd, vertical communication runner；23rd, jet；24th, plug；25th, nozzle.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit, including drill body 11 and for installing
The clamper 14 of fixed cutting tooth 142, clamper 14 is arranged at the working end of drill body 11, clamper 14 and drill body 11
It is detachably connected, clamper 14 can be rotated, the multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit also includes using
In adjustment the rotational angle of clamper 14 angle adjusting mechanism, as shown in Figure 1.
Multifunctional high pressure water jet of the present invention-PDC teeth combined-breaking rock tests the main region of drill bit and existing drill bit
It is not that cutting tooth 142 can be dismantled and changed, position and angle of the cutting tooth 142 on drill body 11 can be adjusted, its
The change of middle position includes the change of the position brought by Angulation changes.Any of setting can realize cutting on drill body 11
Cut that tooth 142 can be dismantled and the structure of position and angle adjustable can realize function of the invention, it is any to realize cutting
Cutting tooth 142 can dismantle while the drill bit of position and angle adjustable is protection scope of the present invention.
In the present embodiment, as shown in Figure 1, Figure 2, Figure 3 shows, the multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment
Drill bit includes drill body 11 and clamper 14, and as shown in Figure 4 and Figure 5, drill body 11 contains working end and connection end, drill bit
Down, the lower end of drill body 11 is provided with the external screw thread for jointed rod, drill bit for connection end upward for the working end of body 11
It is provided with the upper surface of body 11 in six clamper mounting grooves 114, each clamper mounting groove 114 and is separately installed with clamper
14.Clamper 14 includes clamp body 141, cutting tooth 142 and compresses piece 143, as shown in Figure 8, Figure 9, clamp body 141
It is an oblate column body, containing jagged, the breach contains on cutting tooth mounting surface 146 and compresses for the edge of clamp body 141
Piece mounting surface 147.Cutting tooth mounting groove 140 is provided with 146 on cutting tooth mounting surface, cutting tooth 142 is located at cutting tooth mounting groove
In 140, compress piece 143 and be pressed in cutting tooth 142, and compress between piece 143 and clamp body 141 by compressing piece screw
Connection, makes cutting tooth 142 detachable.
When cutting tooth 142 is installed, the positive and negative of cutting tooth 142 is noted, alloy face should be close to cutting tooth mounting groove 140, cut
Cut the flank of tooth and be close to compression piece 143, so that in bit, resistance during rock cutting, clamper are integrally born by clamper
Overall structure keeps stabilization, and resistance during rock cutting will be otherwise born by compression piece, in long period of experiments or bears larger
During resistance, cause to compress the deformation of piece screw, compress piece and loosen, it is impossible to fixed cutting tooth.It is respectively provided with each clamper mounting groove 114
There is internal keyway 115, be provided with several outside keyways 144 on the outer circumference surface of clamp body 141 successively vertically, it is two neighboring outer
Differential seat angle is 10 ° between keyway 144, and the cutting angle adjusting key is inserted between an internal keyway 115 and an outside keyway 144,
The cutting angle adjusting key is thin cylindric, the through hole phase that the cutting angle adjusting key is formed with internal keyway 115 and outside keyway 144
Match somebody with somebody, by make cutting angle adjusting key insert internal keyway 115 mutually fixed with different outside keyways 144 realize clamper 14 relative to
The rotation of mounting groove 114, so as to obtain 4 tooth cutting angles for differing 10 ° successively.In processing, by changing clamp body
The angle of the first outside keyway of bottom 144, you can obtain and 4 different before cutting angles of needs.Experimental needs,
The angle of different the first outside keyways on design processing clamp body, and clamp body quantity, achievable cutting tooth cuts
Top rake on a large scale, the change of small step-length.
In the present embodiment, as shown in Figure 4, Figure 5, the axial centre of drill body 11 is provided with sprue 111, sprue
111 tops are connection piston mounting holes 112, and connection piston 12 is provided with connection piston mounting holes 112, are set on drill body 11
Drilling fluid runner is equipped with, drilling fluid runner includes interconnected some cross connection runners 21 and some vertical communication streams
Road 22, each endcapped of cross connection runner 21, as shown in fig. 7, being provided with connection sprue 111 and drilling well in connection piston 12
The interface channel of liquid runner, above-mentioned interface channel includes blind hole 121, stream ring 123 and several pod apertures 124 is stored, in blind hole 121
End seal is closed, lower end connects with sprue 111, and blind hole 121 the diameter with diameter greater than sprue 111, store stream ring 123 be edge
The excircle circumferentially extending groove of piston 12 is connected, pod apertures 124 are arranged between blind hole 121 and storage stream ring 123, store stream ring
123 are connected with each cross connection runner 21, and connect on piston 12, and sealing ring 122 is set the top of stream ring 123 is stored.Drilling well
After liquid pump goes out, drill body is entered by sprue 111, it is blind into the blind hole 121 of connection piston after a bit of expanding 113
The end of hole 121 limits the axial direction flowing of drilling fluid, radially flows into orthogonal pod apertures 124, is flowed into through pod apertures 124
Stream ring 123 is stored, the short time stores to be full of after flowing and stores stream ring 123, then flows ring 123 into cross connection runner 21, vertical communication through storing
Runner 22, sprays by nozzle 25.
As shown in Fig. 2 being left between the connection upper end of piston 12 and drill body 11, locating dowel 13 is set in spacing, spacing,
Locating dowel 13 is polygon prism, and each clamper mounting groove 114 is in the circular array put centered on connecting the center of piston mounting holes 112
Row, lateral surface and the clamper mounting groove 114 of locating dowel 13 are corresponded.
In the present embodiment, the outside of locating dowel 13 is positive six prismsby shape, as shown in Figure 10, Figure 11, is set in locating dowel 13
Horizontal screw hole is put, as shown in figure 5, clamper mounting groove 114 sets six, each outer face of locating dowel 13 is respectively with one
Individual clamper mounting groove 114 is corresponding, and three clampers 14 are set in each clamper mounting groove 114, clamp body 141
Fixing hole 145 is provided with axle center, Positioning screw is connected to the side of locating dowel 13 through the fixing hole 145 of each clamp body 141
Screw hole in.What can be matched in clamper mounting groove 114 is provided with one to three clamper 14, clamper mounting groove 114
It is interior can not also installing holder 14.During installation, clamper after internal keyway slips into clamper mounting groove, respectively against positioning
Six side sides, no longer slide；As shown in Fig. 7, Figure 10, Figure 11, connection piston 12 top exterior walls set radially projecting locating ring
125, the inwall of locating dowel 13 sets the positioning step 131 for protruding radially inwardly, and locating ring 125 is stuck on positioning step 131, prevents
Connection piston slides axially, and is allowed to position.During assembling, locating dowel 13 directly snaps in solid in the positioning hexagonal hole of drill body upper end
It is fixed.
Locating dowel 13 is installed after fixing, then connection piston 12 is inserted into connection piston peace in the axially extending bore of located post 13
In dress hole, several location holes 126 for axially extending are provided with the connection top end face of piston 12, outside connection piston 12 bottom
Wall sets external screw thread to be used to connect drill body 11, by being rotated after instrument insertion location hole 126 so that the external screw thread on piston 12
Be engaged with the internal thread on drill body 11, be connected piston while, the clamping locating dowel 13 of piston 12.
In the present embodiment, as shown in Figure 5, Figure 6, store between stream ring 123 and piston mounting holes 112 and form annular channel,
Each cross connection runner 21 is tangent with the annular channel, and each both sides of clamper mounting groove 114 is respectively provided with a transverse direction
Connection runner 21, each cross connection runner 21 connects three vertical communication runners 22 of same row, each vertical communication runner 22
The jet 23 of end be machined with connection screw thread hole for installing nozzle 25 or plug 24.Multi-functional height of the present invention
When pressure water jet-PDC teeth combined-breaking rock experiment drill bit is installed, first cutting tooth 142 is arranged on clamp body, Ran Hougen
According to the cutting tooth angle that experimental program, selection will be tested.In the case where needing to install all cutting tooths, then according to phase
Same method and steps, all clamp bodies are installed.It is not required to that all cutting tooths are installed or carries out specific carries out
During cloth tooth scheme, the housing screw that need to only outward winding on the clamping body device that need not be installed on the position of cutting tooth is opened and compressed
Piece, removes cutting tooth.
After choosing cloth tooth scheme, completing cloth tooth, because nozzle 25 is detachable, according to whether further research is penetrated
The influence for PDC cutter breaking rocks is flowed, decides whether that jet nozzle 25 is installed.Different angles are machined with inside different spray nozzles
Jet runner, to study efficiency during relative to cutting tooth different jet angle impacts rock, cutting carring.According to experiment needs
Flow angle needed for selection, then installs nozzle, and when installation nozzle threads need to be completely screwed into, it is ensured that the identical flow angle of research
During experiment, the relative position of jet impulse cutting tooth, angle are certain.Due to being machined with respectively in cutting tooth both sides on drill body
Jet runner, therefore, nozzle can be installed in cutting tooth different relative position and be coordinated with water jet relative position with studying PDC teeth
Influence of the relation for broken rock.After completing the assembling of jet nozzle, will be not required to that plug of being screwed at the position of nozzle is installed, block and penetrate
Circulation road；Then drill body end is screwed in into drilling rod, completes the assembling of experiment drill bit and be connected.Drill bit is set to be driven in power-equipment
Dynamic lower rotary drilling, while realizing the spiral and axial feeding of cutting tooth.
As shown in Figure 12 and Figure 13, the profile of nozzle 25 is a hex screw, and the cylinder that different angles are machined with inside it is penetrated
Stream runner, when flow angle is 0 °, directly processes a straight cylinder through hole for insertion nozzle；When penetrating for other angles need to be processed
During flow nozzle, need first to process a cylinder blind hole, then the runner from head processing certain angle and blind hole insertion from screw bottom,
The cylindrical hole of bending is formed, the processing of jet nozzle runner is completed.
The above, specific embodiment only of the invention, it is impossible to the scope that its restriction invention is implemented, so it is equivalent
The displacement of component, or the equivalent variations made according to scope of patent protection of the present invention and modification, should all still fall within what this patent was covered
Category.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical scheme, technical scheme with
Can be used with independent assortment between technical scheme.
Claims (10)
1. a kind of multifunctional high pressure water jet-PDC teeth combined-breaking rock tests drill bit, it is characterised in that the multifunctional high pressure water-jet
Stream-PDC teeth combined-breaking rock experiment drill bit includes drill body (11) and the clamper for installing fixed cutting tooth (142)
(14), clamper (14) is arranged at the working end of drill body (11), and clamper (14) is detachably connected with drill body (11),
Clamper (14) can be rotated, and the multifunctional high pressure water jet-PDC teeth combined-breaking rock experiment drill bit is also included for adjusting folder
The angle adjusting mechanism of holder (14) rotational angle.
2. multifunctional high pressure water jet according to claim 1-PDC teeth combined-breaking rock tests drill bit, it is characterised in that
Clamper (14) is containing clamp body (141) and compresses piece (143), and clamp body (141) is in the form of a column, clamp body
(141) and after compression piece (143) is connected by screw cutting tooth (142) can be made to be fixed on clamper (14), drill body
(11) working end is provided with the clamper mounting groove (114) for installing holder (14), and clamper (14) is in drill body
(11) position on can be adjusted.
3. multifunctional high pressure water jet according to claim 2-PDC teeth combined-breaking rock tests drill bit, it is characterised in that
The edge of clamp body (141) is provided with breach, and the breach contains cutting tooth mounting surface (146) and compresses piece mounting surface (147),
The cutting tooth mounting surface (146) and compress piece mounting surface (147) each parallel to clamp body (141) axis, cutting tooth peace
The cutting tooth mounting groove (140) that cutting tooth (142) is installed for accommodating is provided with dress face (146), piece (143) is compressed by described
Screw is fixedly connected with piece mounting surface (147) is compressed, and a part for cutting tooth (142) is located in cutting tooth mounting groove (140), pressure
One end of tight piece (143) abuts with cutting tooth (142).
4. multifunctional high pressure water jet according to claim 3-PDC teeth combined-breaking rock tests drill bit, it is characterised in that
More than 90 ° and less than 180 °, cutting tooth (142) is angle between cutting tooth mounting surface (146) and compression piece mounting surface (147)
Disc-shaped, cutting tooth (142) is more than cutting tooth mounting groove parallel to cutting tooth mounting surface (146), the thickness of cutting tooth (142)
(140) depth, the described one end for compressing piece (143) is inclined-plane, and the inclined-plane is parallel with cutting tooth mounting surface (146), along clamping
The radial direction of device body (141), one end of cutting tooth (142) is located at cutting tooth mounting groove (140) outward, and cutting tooth (142) is positioned at cutting
The part cut in tooth mounting groove (140) matches with the shape of cutting tooth mounting groove (140).
5. multifunctional high pressure water jet according to claim 2-PDC teeth combined-breaking rock tests drill bit, it is characterised in that
Clamper (14) is located fully or partially in clamper mounting groove (114), and the diameter parallel of clamp body (141) is in clamping
Device mounting groove (114) opens up direction, and clamper mounting groove (114) is prevented from clamper (14) along drill body (11)
Heart line direction departs from drill body (11), and upward, position and the clamper of cutting tooth (142) are pacified for the working end of drill body (11)
The upper end of tankage (114) is corresponding.
6. multifunctional high pressure water jet according to claim 5-PDC teeth combined-breaking rock tests drill bit, it is characterised in that
Clamper mounting groove (114) is opened up along the radial direction of drill body (11), and clamp body (141) is in oblate column, clamper
(14) can be rotated by axle of the axis of clamp body (141), the section configuration of clamper mounting groove (114) is arc, should
The radius of arc is equal to the radius of clamp body (141), and clamp body (141) can be in clamper mounting groove (114)
Along radially sliding for drill body (11)；
It is preferred that the angle adjusting mechanism includes cutting angle adjusting key, an internal keyway (115) and a plurality of outside keyway (144), this one
The inner surface for being radially disposed at clamper mounting groove (114), a plurality of outside keyway of bar internal keyway (115) along drill body (11)
(144) along the outer surface for being axially set in clamp body (141) of clamp body (141), two adjacent outside keyways
(144) the distance between equal, the cutting angle adjusting key is located between an outside keyway (144) and an internal keyway (115).
7. multifunctional high pressure water jet according to claim 6-PDC teeth combined-breaking rock tests drill bit, it is characterised in that
Drill body (11) is cylindrical in shape structure, and clamper mounting groove (114) runs through drill body along the radial direction of drill body (11)
(11) surfaces externally and internally, drill body (11) is being bored containing a plurality of holder mounting groove (114), a plurality of clamper mounting groove (114)
The working end of head body (11) is uniformly distributed circumferentially, and matching is provided with least one clamping in clamper mounting groove (114)
Device (14), the central angle corresponding to arc between two adjacent outside keyways (144) is 5 °~15 °.
8. multifunctional high pressure water jet according to claim 1-PDC teeth combined-breaking rock tests drill bit, it is characterised in that
Drill body (11) is cylindrical in shape structure, and the sprue (111) of insertion vertically, drill bit sheet are contained in the middle part in drill body (11)
Also contain some cross connection runners (21) and some vertical communication runners (22), cross connection runner (21) in body (11)
Along being radially arranged for drill body (11), vertical communication runner (22) is axially arranged along drill body (11), sprue (111)
One section be, for installing the piston mounting holes of piston (12) (112), piston (12), piston to be provided with piston mounting holes (112)
(12) position is corresponding with the working end of drill body (11), and piston (12) is tightly connected with drill body (11), piston
(12) inner flow passage is contained within, sprue (111) can pass sequentially through the inner flow passage, cross connection runner (21) and vertical communication stream
Road (22) is connected with outside the working end of drill body (11).
9. multifunctional high pressure water jet according to claim 8-PDC teeth combined-breaking rock tests drill bit, it is characterised in that
Piston (12) is cylindrical, the inner flow passage include blind hole (121) and pod apertures (124), blind hole (121) positioned at piston (12) one
End, towards the connection end of drill body (11), pod apertures (124) open up blind hole (121) along the radial direction of piston (12), blind hole
(121) connected by pod apertures (124) with the outside of piston (12), the outer surface of piston (12) is circumferentially arranged with storage stream ring
(123) it is annular groove, to store stream ring (123), stores and annular channel is formed between stream ring (123) and piston mounting holes (112), stores stream
The position of ring (123) is corresponding with the position of pod apertures (124), the position of cross connection runner (21) and the position of the annular channel
Put corresponding, cross connection runner (21) is tangent with the annular channel, the working end of drill body (11) is provided with for installation folder
The clamper mounting groove (114) of holder (14), clamper mounting groove (114) is opened up along the radial direction of drill body (11), along drill bit
The both sides of the circumferential clamper mounting groove (114) of body (11) are respectively provided with a cross connection runner (21), every cross connection
Runner (21) is respectively connected with a plurality of vertical communication runner (22), the working end phase of vertical communication runner (22) and drill body (11)
Corresponding jet (23) is removably provided with nozzle (25) or plug (24).
10. multifunctional high pressure water jet according to claim 9-PDC teeth combined-breaking rock tests drill bit, it is characterised in that
What is matched between piston mounting holes (112) and piston (12) is arranged with locating dowel (13), and locating dowel (13) is positioned at drill body
(11) working end, locating dowel (13) is regular prism shape structure, and the side of locating dowel (13) is with clamper mounting groove (114) one by one
Correspondence connection, bolt is connected solid with locating dowel (13) through the clamp body (141) in clamper mounting groove (114)
Fixed, upward, the upper end of piston (12) is provided with locating ring (125), in the upper end of locating dowel (13) for the working end of drill body (11)
The positioning step (131) matched with the locating ring (125) is provided with, is provided with the upper end of piston (12) for screwing piston (12)
Location hole (126).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202980.9A CN106761423B (en) | 2016-12-23 | 2016-12-23 | A kind of multifunctional high pressure water jet-PDC tooth combined-breaking rock experiment drill bit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202980.9A CN106761423B (en) | 2016-12-23 | 2016-12-23 | A kind of multifunctional high pressure water jet-PDC tooth combined-breaking rock experiment drill bit |
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| CN106761423A true CN106761423A (en) | 2017-05-31 |
| CN106761423B CN106761423B (en) | 2018-12-25 |
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| CN107288550A (en) * | 2017-08-18 | 2017-10-24 | 陕西隆极机械设备有限公司 | Suitable for the piling pore-forming drill bit of hard rock-soil layer |
| CN107944119A (en) * | 2017-11-18 | 2018-04-20 | 西南石油大学 | A kind of lateral dynamic balance cloth tooth method of PDC drill bit for considering Dynamic wear |
| CN108731935A (en) * | 2018-08-01 | 2018-11-02 | 中国地质大学（北京） | The tool head and laboratory holder of multifunction combined PDC teeth drilling laboratory holder |
| CN109025831A (en) * | 2018-09-11 | 2018-12-18 | 中国石油大学(北京) | Hybrid power PDC drill bit based on fluidics |
| CN109612866A (en) * | 2018-11-28 | 2019-04-12 | 中国石油大学(北京) | The experimental provision and its experimental method of force on PDC cutter measurement |
| CN112177539A (en) * | 2020-09-28 | 2021-01-05 | 沧州格锐特钻头有限公司 | Drill bit with hydraulic fracturing function |
| CN113356876A (en) * | 2021-07-28 | 2021-09-07 | 中国铁建重工集团股份有限公司 | Rock breaking cutter head, tunnel boring machine and using method of tunnel boring machine |
| CN113445923A (en) * | 2021-08-31 | 2021-09-28 | 胜利油田海胜实业有限责任公司 | PDC drill bit with wear-resisting function for well drilling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109025831A (en) * | 2018-09-11 | 2018-12-18 | 中国石油大学(北京) | Hybrid power PDC drill bit based on fluidics |
| CN109025831B (en) * | 2018-09-11 | 2020-03-13 | 中国石油大学(北京) | Hybrid PDC drill bit based on jet technology |
| CN109612866A (en) * | 2018-11-28 | 2019-04-12 | 中国石油大学(北京) | The experimental provision and its experimental method of force on PDC cutter measurement |
| CN112177539A (en) * | 2020-09-28 | 2021-01-05 | 沧州格锐特钻头有限公司 | Drill bit with hydraulic fracturing function |
| CN113356876A (en) * | 2021-07-28 | 2021-09-07 | 中国铁建重工集团股份有限公司 | Rock breaking cutter head, tunnel boring machine and using method of tunnel boring machine |
| CN113445923A (en) * | 2021-08-31 | 2021-09-28 | 胜利油田海胜实业有限责任公司 | PDC drill bit with wear-resisting function for well drilling |
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