CN107956419A - A kind of jar - Google Patents
A kind of jar Download PDFInfo
- Publication number
- CN107956419A CN107956419A CN201711321222.3A CN201711321222A CN107956419A CN 107956419 A CN107956419 A CN 107956419A CN 201711321222 A CN201711321222 A CN 201711321222A CN 107956419 A CN107956419 A CN 107956419A
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- impact
- jump bit
- hole
- cavity
- lower contact
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- 238000005553 drilling Methods 0.000 claims abstract description 54
- 239000012530 fluid Substances 0.000 claims description 38
- 230000008859 change Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 239000011435 rock Substances 0.000 description 9
- 230000035939 shock Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 206010008469 Chest discomfort Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 102000016938 Catalase Human genes 0.000 description 1
- 108010053835 Catalase Proteins 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to drilling technology field, discloses a kind of jar.The present invention provides a kind of jar, which includes outer barrel, lower contact and the rotary components and fixation kit that are arranged at outer barrel, fixation kit and is arranged between rotary components and lower contact, and lower contact is connected to outer barrel and rotary components.Rotary components include connector, the jump bit for being connected to the impact cavity of connector, being arranged at impact inside cavity, the switching valve being arranged inside jump bit and the orifice union for being resisted against the inner wall for impacting cavity, and jump bit and switching valve are arranged between connector and orifice union.Connector, impact cavity, jump bit, switching valve and throttle nozzle are hollow structure, and are interconnected.Lower contact is connected to impact cavity, jump bit and switching valve can circumferentially reciprocating rotary, and impact cavity can be spacing to jump bit, jump bit can be spacing to switching valve, ensures the constant torque that PDC drill bit is subject to.
Description
Technical field
The present invention relates to drilling tool speed-raising technical field, more particularly to a kind of jar.
Background technology
Drilling speed is the eternal theme for drilling industry.As current international oil price constantly rises, drilling speed into
One of main means of cost efficiency are carried out during exploration and development for each elephant.
In terms of rate of penetration is improved, with deepening continuously for research, domestic and international research worker gradually has found, from basic
The upper speed-increasing effect for improving PDC drill bit, the stability of palpus collateral security PDC drill bit are started with, that is, ensure that PDC drill bit was crept into broken rock
Constant torque is kept in journey.Since PDC drill bit is in rock break-off process is cut, it may appear that cutting tooth fails catalase instantaneously,
At this time due to ground turntable rotation will so that rotation torque energy accumulating on whole drill string, when energy accumulating to a certain extent
Afterwards, rock is crushed by moment, and the energy abrupt release on drill string, this process is referred to as the stick-slip effect of PDC drill bit.Stick-slip is imitated
It should be exactly the non-constant performance of PDC drill bit moment of torsion.Early period carry out PDC drill bit speed-raising research process, people pay attention into
Row Axial Shock Load is in PDC drill bit.It is impermanent there are PDC drill bit moment of torsion using Axial Shock Load by the way of PDC drill bit
It is fixed, and then cause PDC drill bit speed-increasing effect general.
The content of the invention
It is an object of the invention to provide a kind of jar, solve in the prior art that PDC drill bit moment of torsion is non-constant, and then
Cause the general technical problem of PDC drill bit speed-increasing effect.
For this purpose, the present invention uses following technical scheme：
A kind of jar, including outer barrel, lower contact and the rotary components and fixation kit that are arranged at the outer barrel, institute
State fixation kit to be arranged between the rotary components and the lower contact, the lower contact is connected to the outer barrel and institute
State rotary components；The rotary components include connector, are connected to the impact cavity of the connector, are arranged at the impact chamber
The jump bit in internal portion, the switching valve being arranged inside the jump bit and the throttling group for being resisted against the inner wall for impacting cavity
Part, the jump bit and the switching valve are arranged between the connector and the orifice union, and the throttle nozzle is used for
Spray cleaner for high-pressure drilling fluid；The connector, the impact cavity, the jump bit, the switching valve and the throttle nozzle are equal
For hollow structure and it is interconnected；The lower contact is connected to the impact cavity, the jump bit and the equal energy of the switching valve
Enough circumferentially reciprocating rotaries, and the impact cavity can be spacing to the jump bit, the jump bit can be to the conversion
Valve is spacing.
Preferably, the connector includes cylinder and is arranged at the cone of the cylindrical member at one end, the cylinder
Multiple straight slots are provided with body, are respectively arranged with the cone circumferentially distributed and axially through multiple the first of setting
Open slot and multiple first through hole；First open slot is used for the circulation of drilling fluid；The impact cavity passes through described first
Through hole is connected to the cone, and the jump bit and the switching valve are connected to the end face of the cone.
Preferably, one end of the impact cavity is correspondingly arranged on circumferentially distributed multiple threaded holes, the impact
The other end of cavity is threadedly connected to the lower contact, between the cone and the impact cavity by bolt described in
First through hole is connected with the threaded hole；The both sides of the outer wall of the impact cavity are respectively arranged with multiple and the described first opening
Corresponding second open slot of groove, is both provided with long through-hole on second open slot；The setting of the inner wall of the impact cavity
There are two the first fan grooves and two half slots, the half slot is arranged between two fan grooves.
Preferably, the both sides of the jump bit are respectively arranged with impact boss, the both sides of the impact boss are set respectively
It is equipped with the second through hole, is symmetrically arranged with four third through-holes between two impact boss, second through hole and described the
Three through holes are circumferentially uniformly distributed and axially disposed along the impact boss, and second through hole and the third through-hole are equal
Circulation for drilling fluid；The impact boss can rotate in first fan groove, the both sides of first fan groove
Can be spacing to the impact boss；The both sides of the inner wall of the jump bit are respectively arranged with convex block, and the convex block is arranged at institute
State the inside of switching valve.
Preferably, the both sides of the switching valve are respectively arranged with the second fan groove, between two second fan grooves
Four fourth holes are symmetrically arranged with, second fan groove and the fourth hole are uniformly distributed circumferentially and set vertically
Put, and the fourth hole is used for the circulation of drilling fluid；The switching valve can be rotated in the inner cavity of the jump bit, described convex
Block is arranged in second fan groove, and the both sides of second fan groove can be spacing to the convex block.
Preferably, the threaded one end of the outer barrel is connected with drill collar, the other end of the outer barrel be provided with it is multiple uniformly
The groove of distribution, the lower contact are connected in the groove.
Preferably, the lower contact is correspondingly arranged on multiple boss being adapted with the groove, the boss clamping
In the groove；
It is provided with multiple ring-shaped grooves in the lower contact, it is close that the inner wall of the ring-shaped groove and the outer barrel forms labyrinth
Envelope；
The threaded one end of the lower contact is connected to the impact cavity, and the other end is threaded with PDC drill bit.
Preferably, being provided with circulation part between the outer barrel and the cylinder, the circulation part is connected in described outer
The inner wall of cylinder, the circulation part are threadedly connected to the inner wall of the cylinder.
Preferably, the orifice union further includes supporting item, the supporting item is arranged at the impact cavity and described
Between throttle nozzle, the supporting item bears against the end face in the end face of the jump bit and the switching valve, the support
Part is connected in the inner wall of the impact cavity, and the throttle nozzle is threadedly connected to the supporting item.
Preferably, between the throttle nozzle and the supporting item between the lower contact and the impact cavity
It is provided with O-ring seal.
Beneficial effects of the present invention：
By setting drilling fluid to circulate between impact cavity, jump bit, switching valve and throttle nozzle, due to throttle nozzle
Bore is small, and there is throttling action to produce pressure differential.Under the action of the pressure differential, jump bit circumferentially reciprocating rotary can be driven
Turn and give impact one reciprocal impact force of cavity.Simultaneously as impact cavity is connected with lower contact, by the impact masterpiece of high frequency
For lower contact, and PDC drill bit directly links together with lower contact, then impact force of the jump bit to impact cavity, phase
When in directly acting on PDC drill bit.Using impact cavity, lower contact and PDC drill bit successively by impact force transmission by the way of, protect
It is steady state value to have demonstrate,proved the moment of torsion that PDC drill bit is subject in drilling process, and can accelerate to drive PDC drill bit broken rock, and then is improved
The efficiency of breaking rock and rate of penetration of PDC drill bit.At this time, there are two active forces to act on and stratum is cut on PDC drill bit, an effect
Power is the torsion that ground turntable provides, the other is impact forces provided by the invention.Since jump bit is circumferentially reciprocal
Rotate and give impact cavity reciprocal impact force, and impact cavity, lower contact and PDC drill bit and be sequentially connected, and then the impact force
Finally it is applied on PDC drill bit, drilling rod is had no effect, do not change the load of whole impact energy, and then ensures to bore
The moment of torsion that bar is passed on can be entirely used for cutting stratum, without being wasted.
Brief description of the drawings
Fig. 1 is the structure diagram of the front view of jar of the present invention；
Fig. 2 is jar of the present invention cross-sectional view at A-A in Fig. 1；
Fig. 3 is jar of the present invention cross-sectional view at B-B in Fig. 1；
Fig. 4 is the structure diagram of connector in jar of the present invention；
Fig. 5 is the structure diagram of the right view of connector in jar of the present invention；
Fig. 6 is the structure diagram that cavity is impacted in jar of the present invention；
Fig. 7 is the structure diagram of jump bit in jar of the present invention；
Fig. 8 is the structure diagram of the left view of jump bit in jar of the present invention；
Fig. 9 is the structure diagram of switching valve in jar of the present invention；
Figure 10 is switching valve cross-sectional view at C-C in fig.9 in jar of the present invention；
Figure 11 is the structure diagram of outer barrel in jar of the present invention；
Figure 12 is the structure diagram of lower contact in jar of the present invention；
Figure 13 is the structure diagram of the front view of lower contact in jar of the present invention；
Figure 14 is structure diagram of the jar of the present invention in original state；
Figure 15 is that jar of the present invention is forming the structure diagram of first time impact force state；
Figure 16 is that jar of the present invention is forming the structure diagram of spacing state for the first time；
Figure 17 is that jar of the present invention is forming the structure diagram of second of impact force state；
Figure 18 is that jar of the present invention is forming the structure diagram of second of spacing state.
In figure：
1st, outer barrel；2nd, lower contact；3rd, rotary components；4th, fixation kit；5th, circulate part 6, O-ring seal；
11st, groove；
21st, boss；22nd, ring-shaped groove；
31st, connector；32nd, cavity is impacted；33rd, jump bit；34th, switching valve；35th, orifice union；
311st, cylinder；312nd, cone；313rd, straight slot；314th, the first open slot；315th, first through hole；
321st, threaded hole；322nd, bolt；323rd, the second open slot；324th, long through-hole；325th, the first fan groove；326th, semicircle
Groove；
331st, boss is impacted；332nd, the second through hole；333rd, third through-hole；334th, convex block；
341st, the second fan groove；342nd, fourth hole；
351st, throttle nozzle；352nd, supporting item.
Embodiment
Further illustrate technical scheme below with reference to the accompanying drawings and specific embodiments.
A kind of jar is present embodiments provided, as shown in Figs. 1-3, which includes outer barrel 1, lower contact 2 and set
Rotary components 3 and fixation kit 4 inside outer barrel 1, fixation kit 4 are arranged between rotary components 3 and lower contact 2, under connect
First 2 are connected to outer barrel 1 and rotary components 3.Wherein, rotary components 3 include connector 31, are connected to the impact of connector 31
Cavity 32, be arranged at the jump bit 33 impacted inside cavity 32, the switching valve 34 being arranged inside jump bit 33 and be resisted against punching
The orifice union 35 of the inner wall of cavity 32 is hit, jump bit 33 and switching valve 34 are arranged between connector 31 and orifice union 35,
Orifice union 35 includes throttle nozzle 351, and throttle nozzle 351 is used to form cleaner for high-pressure drilling fluid.Meanwhile connector 31, impact chamber
Body 32, jump bit 33, switching valve 34 and throttle nozzle 351 are hollow structure, and are interconnected.In addition, lower contact 2 is connected to
Cavity 32 is impacted, jump bit 33 and switching valve 34 being capable of circumferentially reciprocating rotaries, and impact cavity 32 can be to jump bit 33
Spacing, jump bit 33 can be spacing to switching valve 34.
By setting drilling fluid circulation impact cavity 32, jump bit 33, switching valve 34 and throttle nozzle 351, due to throttling
It is small to spray 351 mouthpiece footpaths, there is throttling action so that the drilling fluid inside switching valve 34 and jump bit 33 forms cleaner for high-pressure drilling fluid,
Produce pressure differential.Under the action of the pressure differential, can drive jump bit 33 circumferentially reciprocating rotary and to impact cavity 32
One reciprocal impact force.Simultaneously as impact cavity 32 is connected with lower contact 2, by the impact force action of high frequency in lower contact 2
On, and PDC drill bit directly links together with lower contact 2, then and jump bit 33 is to the impact force for impacting cavity 32, equivalent to straight
Connect and act on PDC drill bit.Using impact cavity 32, lower contact 2 and PDC drill bit successively by impact force transmission by the way of, ensure
The moment of torsion that PDC drill bit is subject in drilling process is steady state value, and can accelerate to drive PDC drill bit broken rock, and then improves PDC
The efficiency of breaking rock and rate of penetration of drill bit.
Meanwhile by by the energy of cleaner for high-pressure drilling fluid be converted into circumferentially, high frequency and uniform and stable mechanical shock, and
And the active force of mechanical shock is directly passed to PDC drill bit so that PDC drill bit and shaft bottom remain continuity, and then PDC is bored
Head withouts waiting for putting aside enough energy carries out cutting stratum again, avoids the stick-slip effect of PDC drill bit.At this time, there are two
Active force acts on and stratum is cut on PDC drill bit, and an active force is the torsion that ground turntable provides, the other is the present invention carries
The impact forces of confession.Due to jump bit 33 circumferentially reciprocating rotary and the impact force reciprocal to impact cavity 32, and impact
Cavity 32, lower contact 2 and PDC drill bit are sequentially connected, and then the impact force is finally applied on PDC drill bit, and drilling rod is not produced
Any effect, does not change the load of whole impact energy, and then the moment of torsion for causing drilling rod to be passed on can be entirely used for cutting stratum,
Without being wasted.
As shown in Figure 1, above-mentioned fixation kit 4 includes two stationary halfs (not marked in figure), 1 inner wall of outer barrel is correspondingly arranged
There is the card slot (not marked in figure) for connecting and fixing semi-ring, and stationary half is arranged between impact cavity 32 and lower contact 2, and then
Achieve the purpose that to carry out axial limiting fixation.
As shown in Figure 1, above-mentioned orifice union 35 further includes supporting item 352, supporting item 352 is arranged at impact cavity 32 and section
Between flow nozzle 351, and supporting item 352 bears against the end face in the end face of jump bit 33 and switching valve 34.In addition, supporting item
352 are connected in the inner wall of impact cavity 32, and throttle nozzle 351 is threadedly connected to supporting item 352, while throttle nozzle 351 and branch
Realized and sealed by O-ring seal 6 between support member 352.By setting supporting item 352, beneficial to the fixation of throttle nozzle 351.
As illustrated in figures 4-5, above-mentioned connector 31 includes cylinder 311 and the cone for being arranged at 311 one end of cylinder
312, two straight slots 313 are provided with cylinder 311, are respectively arranged with and are uniformly distributed circumferentially and vertically on cone 312
Through four the first open slots 314 of setting and four first through hole 315.Specifically, the first open slot 314 is arranged on cone
In 312 peripheral outer wall, first through hole 315 is opened in the cone of cone 312.Wherein, 313 and first open slot of straight slot
314 are used for the circulation of drilling fluid, and first through hole 315 is stepped hole.Meanwhile impact cavity 32 and be connected to by first through hole 315
Cone 312, and jump bit 33 and switching valve 34 are connected to the end face of cone 312.
It should be strongly noted that the present embodiment is using 313 quantity of straight slot as two, the first open slot 314 and first through hole
315 quantity is exemplified by four.The present embodiment to the quantity of straight slot 313, the first open slot 314 and first through hole 315 not
It is construed as limiting, can be adjusted according to needs of production.
It should be strongly noted that circulation part 5 is additionally provided between outer barrel 1 and cylinder 311, one end card for the part 5 that circulates
The inner wall of outer barrel 1 is connected to, the other end is threadedly connected to the inner wall of cylinder 311.By setting the part 5 that circulates, easy to drilling well liquid energy
Enough enter the inside of connector 31.
As shown in fig. 6, one end of above-mentioned impact cavity 32 is correspondingly arranged on four threaded holes being uniformly distributed circumferentially
321, the other end of impact cavity 32 is threadedly connected to lower contact 2, leads between the cone 312 and impact cavity 32 of connector 31
Bolt 322 is crossed to be fixedly connected with threaded hole 321 through first through hole 315.Meanwhile the both sides for impacting the outer wall of cavity 32 are set respectively
Four and 314 corresponding second open slot 323 of the first open slot are equipped with, long through-hole is both provided with the second open slot 323
324, the second open slot 323 and long through-hole 324 are used to the circulation of drilling fluid.Due to the second open slot 323 and the first open slot
314 corresponding settings, drilling fluid flows through the first open slot 314 and enters the second open slot 323, and drilling fluid can pass through length
Through hole 324 enters the inside of impact cavity 32.In addition, it is provided with two 325 Hes of the first fan groove on the inner wall of impact cavity 32
Two half slots 326, half slot 326 are arranged between two the first fan grooves 325.
As Figure 7-8, the both sides of jump bit 33 are respectively arranged with impact boss 331, the both sides difference of impact boss 331
The second through hole 332 is provided with, four third through-holes 333,332 He of the second through hole are symmetrically arranged between two impact boss 331
Third through-hole 333 is uniformly distributed and axially disposed along impact boss 331 is circumferential, and the second through hole 332 and third through-hole 333
It is used to the circulation of drilling fluid.Since jump bit 33 is arranged at the inside of impact cavity 32, the brill inside impact cavity 32 is flowed into
Well liquid can enter the inside of jump bit 33 by the second through hole 332 and third through-hole 333.Meanwhile impact boss 331 and be arranged at
Impact in the first fan groove 325 of cavity 32, and impact boss 331 to rotate in the first fan groove 325, the first fan groove
325 both sides can be spacing to impact boss 331.In addition, the both sides of the inner wall of jump bit 33 are respectively arranged with convex block 334, it is convex
Block 334 is arranged at the inside of switching valve 34, and convex block 334 is used for the spacing of switching valve 34.
It should be strongly noted that the present embodiment is four with the quantity of the second through hole 332 and third through-hole 333 is
Example.The present embodiment is to the quantity of the second through hole 332 and third through-hole 333 and is not construed as limiting, can according to needs of production into
Row adjustment.
As shown in figs. 9-10, the both sides of above-mentioned switching valve 34 are respectively arranged with the second fan groove 341, two the second fan grooves
Be symmetrically arranged with four fourth holes 342 between 341, the second fan groove 341 and fourth hole 342 be uniformly distributed circumferentially and
It is axially disposed, and fourth hole 342 is used for the circulation of drilling fluid.In addition, switching valve 34 can be in the jump bit 33
Chamber rotates, and convex block 334 is arranged in the second fan groove 341, and the both sides of the second fan groove 341 can be spacing to convex block 334.Due to
Switching valve 34 is arranged at the inside of jump bit 33, and the drilling fluid flowed into inside jump bit 33 can be entered by fourth hole 342
The inside of switching valve 34.Simultaneously as orifice union 35 is connected to the one end of jump bit 33 and switching valve 34 away from connector 31,
And the throttle nozzle 351 in orifice union 35 can form cleaner for high-pressure drilling fluid, the cleaner for high-pressure drilling fluid inside switching valve 34 can be with
Second through hole 332 of jump bit 33 is flowed into by the fourth hole 342 of switching valve 34；Simultaneously as the impact of jump bit 33 is convex
Platform 331 is arranged in the first fan groove 325 so that cleaner for high-pressure drilling fluid can be flowed into from the second through hole 332 of jump bit 33 to be impacted
In first fan groove 325 of cavity 32, and then cause to impact the rotation in the first fan groove 325 of boss 331.
As figs 11-13, the threaded one end of above-mentioned outer barrel 1 is connected with drill collar, the other end of outer barrel 1 be provided with it is multiple
The groove 11 of even distribution.Meanwhile lower contact 2 is correspondingly arranged on multiple boss 21 being adapted with groove 11, boss 21 is connected in
Groove 11, the mode of groove 11 is connected in by using boss 21 so that lower contact 2 is connected to outer barrel 1.In addition, such as Figure 12-13
Shown, the threaded one end of lower contact 2 is connected to impact cavity 32, and the other end is threaded with PDC drill bit, and impacts cavity 32
Realized and sealed by O-ring seal 6 with lower contact 2.Pass through the transmission of lower contact 2 so that pass through moment of torsion in drilling process
Outer barrel 1 passes to lower contact 2, then delivers torque to PDC drill bit by lower contact 2, and then ensure that and act on PDC drill bit
Moment of torsion is steady state value.In addition, in order to ensure to be formed effectively sealing in drilling process, multiple rings are provided with lower contact 2
Shape groove 22, ring-shaped groove 22 and the inner wall of outer barrel 1 form labyrinth seal, improve the sealing between lower contact 2 and outer barrel 1
Property, avoid outer barrel 1 and lower contact 2 in drilling process by drilling fluid erosion.
It should be strongly noted that the threaded one end of the outer barrel 1 of the present embodiment is threadedly connected to PDC in drill collar, the other end
Drill bit.In the present embodiment carries out circulation of drilling fluid or drilling process, drilling fluid will be divided into three parts：Part I, drilling fluid
PDC drill bit directly will be directly entered by throttle nozzle 351；Part II, drilling fluid pass through the straight slot 313 of connector 31 and
One open slot 314, enters the inside of above-mentioned jar through impacting on cavity 32 the second open slot 323 designed and long through-hole 324；
Part III drilling fluid will enter the inside of jar by fourth hole 342 on switching valve 34.All of above drilling fluid enters
Behind jar inside, all by eventually through the hydrophthalmia access wall bottom of PDC drill bit, ground is returned to through the annular space of drilling tool and the borehole wall.
The operation principle of the present invention：
When jar is in position as shown in figure 14, since orifice union 35 is connected to jump bit 33 and switching valve 34
One end away from connector 31, and the throttle nozzle 351 of orifice union 35 can produce chock pressure difference, in the work of the chock pressure difference
Under so that the cleaner for high-pressure drilling fluid of the inside of switching valve 34 can flow into jump bit 33 by the fourth hole 342 of switching valve 34
The second through hole 332；Simultaneously as the impact boss 331 of jump bit 33 is arranged in the first fan groove 325 so that high pressure is bored
Well liquid can be flowed into the first fan groove 325 of impact cavity 32 from the second through hole 332 of jump bit 33, form high-pressure chamber,
Jump bit 33 is driven under the action of High Pressure Difference along rotating clockwise.Since the boss 21 of jump bit 33 is arranged at switching valve 34
In second fan groove 341, then edge rotates clockwise the drive of jump bit 33 switching valve 34 together.When the impact boss of jump bit 33
When the side of the first fan groove 325 of cavity 32 is extremely impacted in 331 rotations, spacing, i.e., as shown in figure 15 position is formed, forms one
Secondary Shocks power.
When jar is in position as shown in figure 15, drilling fluid is open designed by impacting on cavity 32 second
Groove 323 and long through-hole 324, and entered by the third through-hole 333 on jump bit 33 between jump bit 33 and switching valve 34, formed
High pressure chest, switching valve 34 is along rotating clockwise under the action of cleaner for high-pressure drilling fluid.Turn since the convex block 334 of jump bit 33 is arranged at
Change in the second fan groove 341 of valve 34, when the second fan groove 341 of switching valve 34 is rotated to the convex block 334 on jump bit 33
During side, spacing, i.e., as shown in figure 16 position is formed.
When jar is in position as shown in figure 16, drilling fluid will pass through the fourth hole 342 of switching valve 34 and punching
Second through hole 332 of hammer 33 enters the space between impact cavity 32 and jump bit 33, forms high pressure chest.In cleaner for high-pressure drilling fluid
Under the action of, jump bit 33 drives switching valve 34 together along rotating counterclockwise.When the impact boss 331 on jump bit 33 rotates
To impact cavity 32 the first fan groove 325 side when, formed spacing, i.e., position shown in Figure 17.At this time, jump bit 33 liquidates
Hit cavity 32 and complete the second Secondary Shocks.
When jar is in position as shown in figure 17, drilling fluid is by the second open slot 323 by impacting cavity 32
And long through-hole 324 enters the third through-hole 333 on jump bit 33 and enters the space between jump bit 33 and switching valve 34, is formed high
Press chamber.Under the action of cleaner for high-pressure drilling fluid, switching valve 34 will be along walking around, when the second fan groove 341 of switching valve 34 revolves counterclockwise
Go to the side of the convex block 334 of jump bit 33, formed it is spacing, in position as shown in figure 18, that is, initial position, and such as
Position is identical shown in Figure 14.At this time, the percussion of a cycle is completed.
By constantly periodically being impacted, impact force can be produced, and is directly acted on impact cavity 32, together
When, due to impact cavity 32 be connected with lower contact 2, lower contact 2 is connected directly with PDC drill bit, so percussion equivalent to
Directly act on PDC drill bit, the i.e. impact force to one continuous high frequency of PDC drill bit so that PDC drill bit in rock break-off process not
Energy accumulation is needed to achieve that rock breaking efficiency so that the work of PDC drill bit is more steady, and moment of torsion is more constant, and then eliminates
The stick-slip effect of PDC drill bit, greatly improves rate of penetration.
Obviously, the above embodiment of the present invention is just for the sake of clear explanation example of the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (10)
1. a kind of jar, it is characterised in that including outer barrel (1), lower contact (2) and be arranged at the internal rotation of the outer barrel (1)
Turn component (3) and fixation kit (4), the fixation kit (4) be arranged at the rotary components (3) and the lower contact (2) it
Between, the lower contact (2) is connected to the outer barrel (1) and the rotary components (3)；
The rotary components (3) include connector (31), are connected to the impact cavity (32) of the connector (31), are arranged at institute
The internal jump bit (33) of impact cavity (32) is stated, the internal switching valve (34) of the jump bit (33) is arranged at and is resisted against institute
The orifice union (35) of the inner wall of impact cavity (32) is stated, the jump bit (33) and the switching valve (34) are arranged at the company
Between fitting (31) and the orifice union (35), the orifice union (35) includes throttle nozzle (351), the throttle nozzle
(351) it is used to form cleaner for high-pressure drilling fluid；The connector (31), it is described impact cavity (32), the jump bit (33), described turn
Change valve (34) and the throttle nozzle (351) is hollow structure and is interconnected；
The lower contact (2) is connected to the impact cavity (32), and the jump bit (33) and the switching valve (34) can
Circumferentially reciprocating rotary, and the impact cavity (32) can be spacing to the jump bit (33), the jump bit (33) can
It is spacing to the switching valve (34).
2. jar according to claim 1, it is characterised in that the connector (31) includes cylinder (311) and sets
The cone (312) of the cylinder (311) one end is placed in, multiple straight slots (313), institute are provided with the cylinder (311)
State to be respectively arranged with cone (312) and be uniformly distributed circumferentially and axially through multiple first open slots (314) of setting
With multiple first through hole (315)；The straight slot (313) and first open slot (314) are used to the circulation of drilling fluid；
The impact cavity (32) is connected to the cone (312), and the jump bit by the first through hole (315)
(33) and the switching valve (34) is connected to the end faces of the cone (312).
3. jar according to claim 2, it is characterised in that one end of the impact cavity (32) is correspondingly arranged on edge
Circumferential equally distributed multiple threaded holes (321), the other end of the impact cavity (32) are threadedly connected to the lower contact
(2), between the cone (312) and impact cavity (32) by bolt (322) through the first through hole (315) and
Threaded hole (321) connection；
The both sides of the outer wall of the impact cavity (32) are respectively arranged with multiple corresponding with first open slot (314) the
Two open slots (323), are both provided with long through-hole (324) on second open slot (323)；The inner wall of the impact cavity (32)
Two the first fan grooves (325) and two half slots (326) are provided with, the half slot (326) is arranged at two described first
Between fan groove (325).
4. jar according to claim 3, it is characterised in that the both sides of the jump bit (33) are respectively arranged with impact
Boss (331), the both sides of the impact boss (331) are respectively arranged with the second through hole (332), two impact boss
(331) four third through-holes (333), second through hole (332) and the third through-hole (333) equal edge are symmetrically arranged between
The impact boss (331) is circumferentially distributed and axially disposed, and second through hole (332) and the third through-hole (333)
It is used to the circulation of drilling fluid；
The impact boss (331) can rotate in first fan groove (325), and the two of first fan groove (325)
Side can be spacing to the impact boss (331)；
The both sides of the inner wall of the jump bit (33) are respectively arranged with convex block (334), and the convex block (334) is arranged at the conversion
The inside of valve (34).
5. jar according to claim 4, it is characterised in that the both sides of the switching valve (34) are respectively arranged with second
Fan groove (341), four fourth holes (342), second fan are symmetrically arranged between two second fan grooves (341)
Shape groove (341) and the fourth hole (342) are circumferentially distributed and axially disposed, and the fourth hole (342) is used for
The circulation of drilling fluid；
The switching valve (34) can rotate in the inner cavity of the jump bit (33), and the convex block (334) is arranged at described second
In fan groove (341), the both sides of second fan groove (341) can be spacing to the convex block (334).
6. jar according to claim 1, it is characterised in that the threaded one end of the outer barrel (1) is connected with drill collar, institute
The other end for stating outer barrel (1) is provided with multiple equally distributed grooves (11), and the lower contact (2) is connected in the groove (11)
It is interior.
7. jar according to claim 6, it is characterised in that the lower contact (2) be correspondingly arranged on it is multiple with it is described
The boss (21) that groove (11) is adapted, the boss (21) are connected in the groove (11)；
Multiple ring-shaped grooves (22), the ring-shaped groove (22) and the inner wall of the outer barrel (1) are provided with the lower contact (2)
Form labyrinth seal；
The threaded one end of the lower contact (2) is connected to the impact cavity (32), and the other end is threaded with PDC drill bit.
8. jar according to claim 2, it is characterised in that set between the outer barrel (1) and the cylinder (311)
Circulation part (5) is equipped with, the circulation part (5) is connected in the inner wall of the outer barrel (1), and the circulation part (5) is threadedly connected to institute
State the inner wall of cylinder (311).
9. jar according to claim 1, it is characterised in that the orifice union (35) further includes supporting item (352),
The supporting item (352) is arranged between the impact cavity (32) and the throttle nozzle (351), the supporting item (352)
The end face in the end face of the jump bit (33) and the switching valve (34) is born against, the supporting item (352) is connected in institute
The inner wall of impact cavity (32) is stated, the throttle nozzle (351) is threadedly connected to the supporting item (352).
10. jar according to claim 9, it is characterised in that the throttle nozzle (351) and the supporting item
(352) between O-ring seal (6) is both provided between the lower contact (2) and the impact cavity (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321222.3A CN107956419A (en) | 2017-12-12 | 2017-12-12 | A kind of jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321222.3A CN107956419A (en) | 2017-12-12 | 2017-12-12 | A kind of jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107956419A true CN107956419A (en) | 2018-04-24 |
Family
ID=61958562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711321222.3A Pending CN107956419A (en) | 2017-12-12 | 2017-12-12 | A kind of jar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107956419A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109025827A (en) * | 2018-09-11 | 2018-12-18 | 中国石油集团长城钻探工程有限公司 | A kind of drilling speed fluid power torsional pulses impactor |
| CN109882105A (en) * | 2019-04-23 | 2019-06-14 | 吉林省丰河水业有限公司 | A kind of intraductal atmospheric pressure opening bit |
| CN110318667A (en) * | 2019-08-07 | 2019-10-11 | 潍坊中远重工科技有限公司 | A kind of efficient anticreep pressure rotary impact helicoid hydraulic motor |
| CN110965953A (en) * | 2019-11-25 | 2020-04-07 | 中国石油大学(华东) | Hydraulic pulse fluctuation generating device and using method |
| CN111021939A (en) * | 2019-12-02 | 2020-04-17 | 中国石油集团西部钻探工程有限公司 | Circumferential impact assembly |
| CN111648723A (en) * | 2020-04-03 | 2020-09-11 | 莱州市原野科技有限公司 | Method and device for impacting motor by liquid power |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109025827A (en) * | 2018-09-11 | 2018-12-18 | 中国石油集团长城钻探工程有限公司 | A kind of drilling speed fluid power torsional pulses impactor |
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| CN109882105A (en) * | 2019-04-23 | 2019-06-14 | 吉林省丰河水业有限公司 | A kind of intraductal atmospheric pressure opening bit |
| CN109882105B (en) * | 2019-04-23 | 2024-04-26 | 吉林省丰河水业有限公司 | Drill bit for drilling holes in pipe by air pressure |
| CN110318667A (en) * | 2019-08-07 | 2019-10-11 | 潍坊中远重工科技有限公司 | A kind of efficient anticreep pressure rotary impact helicoid hydraulic motor |
| CN110965953A (en) * | 2019-11-25 | 2020-04-07 | 中国石油大学(华东) | Hydraulic pulse fluctuation generating device and using method |
| CN110965953B (en) * | 2019-11-25 | 2022-05-17 | 中国石油大学(华东) | Hydraulic pulse fluctuation generating device and using method |
| CN111021939A (en) * | 2019-12-02 | 2020-04-17 | 中国石油集团西部钻探工程有限公司 | Circumferential impact assembly |
| CN111021939B (en) * | 2019-12-02 | 2022-02-08 | 中国石油集团西部钻探工程有限公司 | Circumferential impact assembly |
| CN111648723A (en) * | 2020-04-03 | 2020-09-11 | 莱州市原野科技有限公司 | Method and device for impacting motor by liquid power |
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