CN105649549B - Drilling tool centering short segment - Google Patents
Drilling tool centering short segment Download PDFInfo
- Publication number
- CN105649549B CN105649549B CN201610143505.2A CN201610143505A CN105649549B CN 105649549 B CN105649549 B CN 105649549B CN 201610143505 A CN201610143505 A CN 201610143505A CN 105649549 B CN105649549 B CN 105649549B
- Authority
- CN
- China
- Prior art keywords
- valve
- runner
- drilling tool
- valve body
- short segment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 126
- 210000002445 nipple Anatomy 0.000 claims abstract description 51
- 239000012530 fluid Substances 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 208000034423 Delivery Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000004233 talus Anatomy 0.000 description 1
- 230000007704 transition 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
-
- 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
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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)
- Check Valves (AREA)
- Earth Drilling (AREA)
Abstract
The present invention is a kind of drilling tool centering short segment, including a nipple body, the inside of nipple body is provided with the drilling fluid runner of up/down perforation, multiple permission drilling fluids are circumferentially fixedly uniformly arranged with the side wall of nipple body and flow to check valve outside nipple body from drilling fluid runner, the radial outside end of check valve can along check valve central shaft telescopic moving.The drilling tool centering short segment can be reduced using drilling fluid and contacted with the direct-type of the borehole wall, can effectively be dropped and be worn away torsion, improve the performance of deviation control with drilling straight well.
Description
Technical field
The present invention relates to down-hole equipment technical field, more particularly to a kind of the drilling tool centering short segment for wearing away torsion can drop.
Background technology
In petroleum drilling operation, especially in inclined shaft, horizontal well and extended reach well, because drill bit and ground interlayer are mutual
The effect of the complexity power such as active force, the drill string of drilling tool is also easy to produce deflection, influences drilling quality.Simultaneously because drill string deflection, it will
Rest on the lower borehole wall, frictional resistance between drill string and the borehole wall and circumferential moment of torsion will increased dramatically, the pressure of the drill that ground installation applies without
Method is effectively transferred at drill bit, and drilling tool extension can be automatically stopped, and this not only lowers drilling efficiency, and added and crept into
This.Therefore, it is drillng operation key issue urgently to be resolved hurrily that drop, which wears away torsion and deviation control with drilling straight well,.
It is existing to be used for dropping the drilling tool centralizing tool for wearing away torsion, righting is carried out by the direct contact with the borehole wall, supported simultaneously
Frictional resistance and moment of torsion that the borehole wall that disappears applies, although play a part of dropping to a certain extent rubbing to subtract and turn round and righting, but can not
Avoid contacting with the direct-type of the borehole wall, drilling tool centralizing tool needs to bear frictional resistance and moment of torsion from the borehole wall.In High angle
In well section or abrasive layer, frictional resistance and moment of torsion increased dramatically, and easily exceed the performance range of drilling tool centralizing tool or make
Into the damage of drilling tool centralizing tool, drilling tool centralizing tool can not be played a part of effective drop and wear away torsion and righting.
Thus, the present inventor relies on experience and the practice for being engaged in relevant industries for many years, proposes a kind of drilling tool centering short segment, with
Overcome the defect of prior art.
The content of the invention
It is an object of the invention to provide a kind of drilling tool centering short segment, the drilling tool centering short segment can be reduced using drilling fluid
Contacted with the direct-type of the borehole wall, can effectively drop and wear away torsion, improve the performance of deviation control with drilling straight well.
The object of the present invention is achieved like this, a kind of drilling tool centering short segment, including a nipple body, the nipple body
Inside be provided with the drilling fluid runner of up/down perforation, be circumferentially fixedly uniformly arranged with multiple permissions on the side wall of the nipple body
Drilling fluid flows to the check valve outside the nipple body, the radial outside end energy of the check valve from the drilling fluid runner
Along the central shaft telescopic moving of the check valve.
In the better embodiment of the present invention, the check valve includes valve body, one end of the valve body be provided with
The entrance of the drilling fluid flow passage, the inside of the valve body, the position seals close to the entrance are arranged with and can axially moved
Dynamic and can seal the poppet valve core of the entrance, the poppet valve core is internally provided with poppet valve core runner, the poppet valve core runner
One end connected with the inside of the valve body, the inside of the valve body, away from the entrance position seals be arranged with can axially
Mobile pilot valve, one end of the pilot valve is set on the poppet valve core, the other end sealing of the pilot valve
Turn into the radial outside end of the check valve by the other end of the valve body, the pilot valve is internally provided with guide
Valve element runner, the poppet valve core runner is mutually communicated with the pilot valve runner, is set on the side wall of the other end of the valve body
Be equipped with can be with the pilot valve flow passage outlet.
In the better embodiment of the present invention, one end of the poppet valve core is provided with diameter to the Way in gradually
The first step portion of diameter increase is provided with the first cone section contract and that the entrance can be sealed, the side wall of the poppet valve core,
Position on the side wall of the poppet valve core between the described first cone section and the first step portion, which is provided with, connects the cone
First intercommunicating pore of valve element runner, the poppet valve core is located at side wall and the institute of the side of the first step portion away from the entrance
State the inner wall sealing connection of valve body；The connection pilot valve runner and the outlet are provided with the side wall of the pilot valve
The second intercommunicating pore.
In the better embodiment of the present invention, the inside of the valve body, one end away from the entrance are provided with directly
The second step portion that footpath reduces, the outlet is arranged at the side wall between the other end of the valve body and the second step portion
On, the valve inner, which is located between the other end of the valve body and the second step portion, is provided with pilot valve via,
The other end sealing of the pilot valve by the pilot valve via, be provided with the side wall of the pilot valve with it is described
Second step portion against the 3rd stage portion.
In the better embodiment of the present invention, the center of the poppet valve core is provided with central tube, the central tube
Inside sets the poppet valve core runner, and one end sealing shroud of the central tube away from the first step portion is located at the pilot valve
In core runner, the outside of the central tube is provided with annular pockets of the opening towards the pilot valve, the poppet valve core with
Spring is arranged between the pilot valve, one end of the spring is resisted against the bottom land of the annular pockets, the bullet
The other end of spring is resisted against in the 3rd stage portion on a side end face of the poppet valve core.
In the better embodiment of the present invention, the valve body includes the first valve body close to the drilling fluid runner,
The other end of first valve body is sealedly connected with the second valve body, and one end of first valve body sets the entrance, and described the
The outlet is set on the side wall of two valve bodies.
In the better embodiment of the present invention, the other end of the valve body is provided with adpting flange portion, the connection
The attachment screw that the fixed valve body is equipped with connection screw thread hole, the connection screw thread hole is provided with flange portion.
In the better embodiment of the present invention, the other end of the pilot valve is hemispherical configuration.
In the better embodiment of the present invention, same axial positions are provided with two on the side wall of the nipple body
The check valve of individual radial symmetric, multiple check valves that axially different position is set are along the nipple body in circumferential equal
Even arrangement.
In the better embodiment of the present invention, the interior of the nipple body is provided with pipe nipple runner, described
Pipe nipple runner includes multiple shaft orientation flowing channels, and each shaft orientation flowing channel is connected with check valve described in one, each shaft orientation flowing channel
Multiple connection shaft orientation flowing channels and the radial communication hole of the outside of the nipple body are evenly arranged with the wall of side；Each axle
To the outer wall insertion of the lower end of runner and the nipple body.
From the above mentioned, the drilling tool centering short segment that the present invention is provided, its internal drilling fluid is by being arranged on the unidirectional of side wall
Valve and pipe nipple runner flow to its outside annular space, are effectively isolated drilling tool centering short segment and the borehole wall, reduce drilling tool centering short segment
Contacted with the direct-type of the borehole wall, so that effectively drop wears away torsion, improve the performance of deviation control with drilling straight well；The drilling tool centering short segment can make
The pressure of the drill normal delivery that ground installation applies is to drill bit so that drilling tool can efficiently be crept into, while lock of tool drilling is reduced, drilling tool
Extended distance increase, drilling cost is reduced while improving drilling efficiency.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1：For the structural representation of the drilling tool centering short segment 100 of the present invention.
Fig. 2：For A-A sectional views in Fig. 1.
Fig. 3：For B-B sectional views in Fig. 1.
Fig. 4：For the structural representation of the check valve 2 of the drilling tool centering short segment 100 of the present invention.
Fig. 5 a：For the contact borehole wall schematic diagram of check valve 2 during the use of drilling tool centering short segment 100 of the present invention.
Fig. 5 b：The schematic diagram flowed for drilling fluid during the use of drilling tool centering short segment 100 of the present invention.
Fig. 5 c：For the schematic diagram of the righting drilling rod of drilling tool centering short segment 100 of the present invention.
Fig. 5 d：The first preceding stressing conditions schematic diagram is resetted for the drilling tool centering short segment 100 of the present invention.
Fig. 5 e：Drilling tool centering short segment 100 for the present invention resets preceding second of stressing conditions schematic diagram.
Fig. 5 f：Schematic diagram is resetted for the drilling tool centering short segment 100 of the present invention.
In figure：100th, drilling tool centering short segment；1st, nipple body；10th, jointing；11st, drilling fluid runner；12nd, pipe nipple stream
Road；121st, shaft orientation flowing channel；122nd, radial communication hole；2nd, check valve；21st, valve body；211st, entrance；212nd, export；213rd, second
Rank portion；214th, pilot valve via；215th, the first valve body；216th, the second valve body；217th, adpting flange portion；2171st, connection screw thread
Hole；2172nd, attachment screw；218th, the second sealing ring；219th, the first sealing ring；22nd, poppet valve core；221st, poppet valve core runner；222、
First cone section；223rd, first step portion；224th, the first intercommunicating pore；225th, annular pockets；23rd, pilot valve；231st, guide
Valve element runner；232nd, the second intercommunicating pore；233rd, the 3rd stage portion；3rd, spring.
Embodiment
In order to which technical characteristic, purpose and effect to the present invention are more clearly understood from, now control illustrates this hair
Bright embodiment.
As shown in Figure 1, Figure 2, Figure 3 shows, the drilling tool centering short segment 100 that the present invention is provided, including a nipple body 1, pipe nipple sheet
The inside of body 1 is provided with the drilling fluid runner 11 of up/down perforation, short for the ease of jointed rod (prior art, figure not shown in)
The inside top of abridged edition body 1 is connected with a jointing 10, in use, and nipple body 1 is connected by jointing 10
Drilling rod (prior art, figure not shown in), interior bottom portion threaded connection drill stem hypomere or drill bit (the existing skill of nipple body 1
Art, not shown in figure)；Multiple permission drilling fluids are circumferentially fixedly uniformly arranged with the side wall of nipple body 1 from drilling fluid runner
11 flow to the check valve 2 outside nipple body 1, what multiple check valves 2 can be uniformly arranged by multigroup radially symmetrical or circumference
Check valve 2 is constituted, in the present embodiment, and the quantity of check valve 2 is 4 groups, every group 2, altogether 8；The footpath of check valve 2 is outside
Side end can along check valve 2 central shaft telescopic moving.In the present embodiment, same axial position on the side wall of nipple body 1
Put place and one group of check valve 2 is set, every group includes the check valve 2 of two radial symmetrics, and it is multigroup that axially different position is set
The check valve 2 is in be arranged circumferentially along nipple body 1, the work of the drilling fluid suffered by the radial outside end of check valve 2
It is firmly uniform.
During using the aided drilling of drilling tool centering short segment 100, drilling fluid can be by drilling fluid runner 11, through unidirectional
Valve 2 flows to the annular space between drilling tool centering short segment 100 and the borehole wall, once the radial outside end of check valve 2 has with the borehole wall
Contact, in the presence of annular space drilling fluid, the radial outside end of check valve 2 is moved inward along central shaft, and drive drilling rod with
The borehole wall is separated, and realizes that the function of wearing away and turn round with deviation control with drilling straight well drops in drilling tool centering short segment 100.
Further, as shown in figure 4, check valve 2 includes valve body 21, one end of valve body 21 is provided with to be connected with drilling fluid runner 11
Logical entrance 211, the inside of valve body 21, the position seals close to entrance 211, which are arranged with, can move axially and energy sealed entry
211 poppet valve core 22, in the present embodiment, is provided with for sealed between the inwall of the outer wall of poppet valve core 22 and valve body 21
First sealing ring 219；Poppet valve core 22 is internally provided with poppet valve core runner 221, one end and the valve body 21 of poppet valve core runner 221
Inside connection, the inside of valve body 21, the position seals away from entrance 211 are arranged with the pilot valve 23 that can be moved axially, at this
In embodiment, it is provided between the inwall of the outer wall of pilot valve 23 and valve body 21 for sealed second sealing ring 218；Guide
One end of valve element 23 is set on poppet valve core 22, and the other end sealing of pilot valve 23 turns into unidirectional by the other end of valve body 21
The radial outside end of valve 2, pilot valve 23 is internally provided with pilot valve runner 231, poppet valve core runner 221 and pilot valve
Core runner 231 is mutually communicated, and the outlet that can be connected with pilot valve runner 231 is provided with the side wall of the other end of valve body 21
212。
Further, as shown in figure 4, to be provided with diameter tapered and can seal to the direction of entrance 211 for one end of poppet valve core 22
The first step portion 223 of diameter increase is provided with first cone section 222 of entrance 211, the side wall of poppet valve core 22, poppet valve core 22
It is located at the position between the first cone section 222 and first step portion 223 on the wall of side and is provided with the first company for connecting poppet valve core runner 221
Through hole 224, the inner wall sealing of side wall and valve body 21 that poppet valve core 22 is located at side of the first step portion 223 away from entrance 211 connects
Connect；Connection pilot valve runner 231 and the second intercommunicating pore 232 of outlet 212 are provided with the side wall of pilot valve 23.
Further, as shown in figure 4, the inside of valve body 21, one end away from entrance 211 are provided with second of diameter reduction
Rank portion 213, outlet 212 is arranged on the side wall between the other end of valve body 21 and second step portion 213, and valve body 21 is internally located at
Pilot valve via 214 is provided between the other end and second step portion 213 of valve body 21, the other end of pilot valve 23 is close
Envelope by pilot valve via 214, be provided with the side wall of pilot valve 23 with second step portion 213 against the 3rd stage portion
233.When pilot valve 23 is moved axially outward, when the 3rd stage portion 233 leans with second step portion 213, pilot valve
23 stop axial movement.
Further, as shown in figure 4, the center of poppet valve core 22 is provided with central tube 220, the inside of central tube 220 sets institute
The poppet valve core runner 221 stated, one end sealing shroud in the remote first step portion 223 of central tube 220 is located at pilot valve runner 231
In, the outside of central tube 220 is provided with annular pockets 225 of the opening towards pilot valve 23, poppet valve core 22 and pilot valve
Spring 3 is arranged between 23, one end of spring 3 is resisted against the bottom land of annular pockets 225, and the other end of spring 3 is resisted against
In 3rd stage portion 233 on a side end face of poppet valve core 22.
Further, as shown in figure 4, valve body 21 includes the first valve body 215 close to drilling fluid runner 11, the first valve body 215
The other end be sealedly connected with the second valve body 216, one end inlet porting 211 of the first valve body 215, the side wall of the second valve body 216
It is upper that outlet 212 is set.First valve body 215 and the second valve body 216 are connected by thread seal.
Further, as shown in Fig. 1, Fig. 3, Fig. 4, the other end of valve body 21 is provided with adpting flange portion 217, adpting flange portion
The attachment screw 2172 that fixed valve body 21 is equipped with connection screw thread hole 2171, connection screw thread hole 2171 is provided with 217.Unidirectionally
Valve 2 is fixed on the side wall of nipple body 1 by attachment screw 2172.
Further, as shown in Figure 3, Figure 4, the other end of pilot valve 23 is hemispherical configuration.Hemispherical configuration profile is justified
It is sliding, be conducive to improving the uniform force of end, and the possibility of the end wear borehole wall is reduced, worn away so as to improve drop
The performance of torsion.
Further, as shown in Figure 1 and Figure 2, the interior of nipple body 1 is provided with pipe nipple runner 12, and pipe nipple runner 12 is wrapped
Including multiple shaft orientation flowing channels 121, (for ease of processing, shaft orientation flowing channel 121 sets, typically adopted downwards from the top end of nipple body 1
Processed with drilling), each shaft orientation flowing channel 121 is connected with a check valve 2, in the present embodiment, each shaft orientation flowing channel 121 respectively with
Outlet 212 on valve body 21 is connected；Be evenly arranged with the side wall of each shaft orientation flowing channel 121 it is multiple connection shaft orientation flowing channels 121 with it is short
The radial communication hole 122 of the outside of abridged edition body 1；The lower end of shaft orientation flowing channel 121 and the outer wall insertion (arc transition of nipple body 1
Connection), talus deposit in anti-no-go nipple runner 12.Drilling fluid in drilling fluid runner 11 can pass through check valve 2, pipe nipple runner
12 flow to the annular space between drilling tool centering short segment 100 and the borehole wall.
When carrying out drillng operation using the drilling tool centering short segment 100 of the present invention, drilling tool centering short segment 100 is arranged on first
In the middle and lower part of drilling rod, lower going-into-well, start drillng operation.As shown in Figure 5 a, drilling fluid is injected in drilling fluid runner 11, works as guide
When valve element 23 contacts the borehole wall, the compression spring 3 of pilot valve 23 simultaneously moves inward, and pilot valve runner 231 passes through the second connection
Outlet 212, pipe nipple runner 12 on hole 232, valve body 21 are connected with the annular space of drilling tool centering short segment 100.Meanwhile, such as scheme
Shown in 5b, in drilling fluid runner 11 in the presence of drilling fluid, the compression spring 3 of poppet valve core 22 is simultaneously moved laterally, poppet valve core stream
Road 221 is connected by the first intercommunicating pore 224, the inner chamber of valve body 21 with the entrance 211 on valve body 21.Now, as shown in Figure 5 c, bore
Well liquid enters drilling tool righting by entrance 211, poppet valve core runner 221, pilot valve runner 231, outlet 212, pipe nipple runner 12
Annular space between pipe nipple 100 and the borehole wall, drilling fluid is acted on the borehole wall, under fluid power effect, the band of drilling tool centering short segment 100
Dynamic drill string, drill bit are separated with the borehole wall, are played a part of drop and are worn away torsion and righting.
The reset of drilling tool centering short segment 100 has two kinds of situations, the first situation as fig 5d, to flow through pilot valve stream
The active force that the drilling fluid in road 231 acts on the tip inside of pilot valve 23 is F1, empty with the outer annular of drilling tool centering short segment 100
Between in active force of the liquid effects on the outside of the end of pilot valve 23 be F2, when F1 is more than F2, in pilot valve runner 231
Under the collective effect of interior drilling fluid and spring 3, circumferentially outer move resets pilot valve 23, pilot valve runner 231 and pipe nipple stream
Road 12 is disconnected, now, the liquid effects dynamic balance suffered by the both sides of the medial end of poppet valve core 22, in annular pockets
In the presence of 225 inner springs 3, poppet valve core 22 moves inward reset, as shown in figure 5f, the first cone sealed entry 211 of section 222,
The inside of valve body 21 is disconnected with drilling fluid runner 11.
Drilling tool centering short segment 100 reset second of situation as depicted in fig. 5e, when drilling fluid pressure be less than drilling tool righting
During liquid pressure in the annular space of pipe nipple 100, the liquid in annular space enters in poppet valve core runner 221, with drilling well
Drilling fluid in liquid runner 11 acts on the directed force F 3 of the end of poppet valve core 22, short with the drilling tool righting in poppet valve core runner 221
Directed force F 4 of the liquid effects in 100 annular spaces in the end of poppet valve core 22 is saved, when F3 is less than F4, drilling tool righting is short
Save the liquid in 100 annular spaces to flow into pilot valve runner 231, poppet valve core runner 221, in drilling tool centering short segment
Liquid in 100 annular spaces and under the collective effect of spring 3, poppet valve core 22 moves inward reset, the first cone section 222
Sealed entry 211, the inside of valve body 21 is disconnected with drilling fluid runner 11, and drilling fluid is not entered back into valve body 21；Now, guide
Liquid effects dynamic balance suffered by the both sides of the outer end of valve element 23, in the presence of spring 3, pilot valve 23 is circumferentially outer to move multiple
Position, pilot valve runner 231 is disconnected with pipe nipple runner 12.
From the above mentioned, the drilling tool centering short segment that the present invention is provided, its internal drilling fluid is by being arranged on the unidirectional of side wall
Valve and pipe nipple runner flow to its outside annular space, are effectively isolated drilling tool centering short segment and the borehole wall, it is to avoid drilling tool centering short segment
Contacted with the direct-type of the borehole wall, so that effectively drop wears away torsion, improve the performance of deviation control with drilling straight well；The drilling tool centering short segment can make
The pressure of the drill normal delivery that ground installation applies is to drill bit so that drilling tool can efficiently be crept into, while lock of tool drilling is reduced, drilling tool
Extended distance increase, drilling cost is reduced while improving drilling efficiency.
Schematical embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any
Those skilled in the art, made equivalent variations and modification on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention should be belonged to.
Claims (9)
1. a kind of drilling tool centering short segment, including a nipple body, the inside of the nipple body are provided with the drilling fluid of up/down perforation
Runner, it is characterised in that：Multiple permission drilling fluids are circumferentially fixedly uniformly arranged with the side wall of the nipple body to bore from described
Well liquid runner flows to the check valve outside the nipple body, and the radial outside end of the check valve can be along the check valve
Central shaft telescopic moving；
The check valve includes valve body, and one end of the valve body is provided with the entrance with the drilling fluid flow passage, the valve
The inside of body, the position seals close to the entrance are arranged with and can move axially and can seal the poppet valve core of the entrance, institute
That states poppet valve core is internally provided with poppet valve core runner, and one end of the poppet valve core runner is connected with the inside of the valve body, described
The inside of valve body, the position seals away from the entrance are arranged with the pilot valve that can be moved axially, the one of the pilot valve
End is set on the poppet valve core, and the other end sealing of the pilot valve turns into described unidirectional by the other end of the valve body
The radial outside end of valve, the pilot valve is internally provided with pilot valve runner, the poppet valve core runner and the elder generation
Guide valve core runner is mutually communicated, and being provided with the side wall of the other end of the valve body can go out with the pilot valve flow passage
Mouthful.
2. drilling tool centering short segment as claimed in claim 1, it is characterised in that：One end of the poppet valve core is provided with diameter to institute
State Way in tapered and the first of the entrance the cone section can be sealed, diameter increase is provided with the side wall of the poppet valve core
First step portion, the position being located on the side wall of the poppet valve core between the described first cone section and the first step portion is set
There is the first intercommunicating pore for connecting the poppet valve core runner, the poppet valve core is located at one of the first step portion away from the entrance
The side wall of side is connected with the inner wall sealing of the valve body；The connection pilot valve stream is provided with the side wall of the pilot valve
Road and the second intercommunicating pore of the outlet.
3. drilling tool centering short segment as claimed in claim 2, it is characterised in that：The inside of the valve body, away from the entrance
One end is provided with the second step portion of diameter reduction, and the outlet is arranged at the other end of the valve body and the second step portion
Between side wall on, the valve inner be located at the valve body other end and the second step portion between is provided with guide
Valve element via, the other end sealing of the pilot valve is set on the side wall of the pilot valve by the pilot valve via
Be equipped with the second step portion against the 3rd stage portion.
4. drilling tool centering short segment as claimed in claim 3, it is characterised in that：The center of the poppet valve core is provided with center
The poppet valve core runner, one end sealing shroud of the central tube away from the first step portion are set inside pipe, the central tube
In the pilot valve runner, annular receiving of the outside provided with opening towards the pilot valve of the central tube is recessed
Groove, is arranged with spring between the poppet valve core and the pilot valve, one end of the spring be resisted against the annular accommodate it is recessed
The bottom land of groove, the other end of the spring is resisted against in the 3rd stage portion on a side end face of the poppet valve core.
5. drilling tool centering short segment as claimed in claim 1, it is characterised in that：The valve body is included close to the drilling fluid runner
The first valve body, the other end of first valve body is sealedly connected with the second valve body, and one end of first valve body sets described
The outlet is set on entrance, the side wall of second valve body.
6. drilling tool centering short segment as claimed in claim 1, it is characterised in that：The other end of the valve body is provided with adpting flange
The connection that the fixed valve body is equipped with connection screw thread hole, the connection screw thread hole is provided with portion, the adpting flange portion
Screw.
7. drilling tool centering short segment as claimed in claim 1, it is characterised in that：The other end of the pilot valve is hemispherical knot
Structure.
8. drilling tool centering short segment as claimed in claim 1, it is characterised in that：Same axial position on the side wall of the nipple body
The place of putting is provided with the check valve of two radial symmetrics, and multiple check valves that axially different position is set are along the pipe nipple
Body is in be arranged circumferentially.
9. drilling tool centering short segment as claimed in claim 1, it is characterised in that：The interior of the nipple body is provided with short
Throttled road, and the pipe nipple runner includes multiple shaft orientation flowing channels, and each shaft orientation flowing channel is connected with check valve described in one, each described
Multiple connection shaft orientation flowing channels and the radial communication of the outside of the nipple body are evenly arranged with the side wall of shaft orientation flowing channel
Hole；The lower end of each shaft orientation flowing channel and the outer wall insertion of the nipple body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143505.2A CN105649549B (en) | 2016-03-14 | 2016-03-14 | Drilling tool centering short segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143505.2A CN105649549B (en) | 2016-03-14 | 2016-03-14 | Drilling tool centering short segment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105649549A CN105649549A (en) | 2016-06-08 |
| CN105649549B true CN105649549B (en) | 2017-10-27 |
Family
ID=56493662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610143505.2A Expired - Fee Related CN105649549B (en) | 2016-03-14 | 2016-03-14 | Drilling tool centering short segment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105649549B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590546B (en) * | 2018-07-04 | 2023-05-26 | 中国地质大学（北京） | Power drilling tool experiment righting device |
| CN112922562B (en) * | 2021-03-12 | 2022-11-25 | 河南理工大学 | Multifunctional gas extraction hole sealing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205000909U (en) * | 2015-09-06 | 2016-01-27 | 陕西延长石油(集团)有限责任公司研究院 | Water conservancy is from washing formula centralizer |
| CN205400607U (en) * | 2016-03-14 | 2016-07-27 | 中国石油大学(北京) | Nipple joint is right to drilling tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0207851D0 (en) * | 2002-04-05 | 2002-05-15 | Sps Afos Group Ltd | Stabiliser jetting and circulating tool |
| US7506703B2 (en) * | 2006-01-18 | 2009-03-24 | Smith International, Inc. | Drilling and hole enlargement device |
| US20120325323A1 (en) * | 2011-06-23 | 2012-12-27 | Baker Hughes Incorporated | Production system and method of varying restrictions to flow along the same |
-
2016
- 2016-03-14 CN CN201610143505.2A patent/CN105649549B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205000909U (en) * | 2015-09-06 | 2016-01-27 | 陕西延长石油(集团)有限责任公司研究院 | Water conservancy is from washing formula centralizer |
| CN205400607U (en) * | 2016-03-14 | 2016-07-27 | 中国石油大学(北京) | Nipple joint is right to drilling tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105649549A (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102966327B (en) | expansion pipe | |
| CN107956457B (en) | Oil extraction water control device, directional well oil extraction pipe string for well completion and well completion method thereof | |
| CN204532262U (en) | Downhole multi-stage flow control valve | |
| CN105649549B (en) | Drilling tool centering short segment | |
| CN204040997U (en) | From grouting floating hoop float shoe | |
| CN205858228U (en) | Differential plugging while drilling circulating valve | |
| CN106014288A (en) | Remote-control variable diameter stabilizer for petroleum drilling | |
| CN202381040U (en) | Differential pressure type circulating throttle valve | |
| CN205400607U (en) | Nipple joint is right to drilling tool | |
| CN107605430B (en) | A kind of well cementation anti-return self balancing device | |
| CN108952621B (en) | Intercept pocket type plugging tool | |
| CN206830131U (en) | Sand setting constant pressure check valve for water injection well | |
| CN206845570U (en) | Hard sealing low discharge reversal valve | |
| CN107152258B (en) | A kind of controlling lost circulation valve | |
| CN204877422U (en) | Porous spherically seated sliding sleeve does not have throttle sand jet | |
| CN205663427U (en) | Two -way pressure -bearing blanking plug | |
| RU2379566C1 (en) | Return valve | |
| CN103742095B (en) | A kind of straight barrel type gas well surface line catches ball device | |
| CN104514517A (en) | Isolating valve | |
| CN106468155A (en) | One kind no throttles one way entrapped water valve | |
| CN209483234U (en) | Drill stem wear-resistant drag-reduction joint | |
| CN107420075A (en) | Upper strata low pressure negative pressure divides device for picking | |
| CN113530492B (en) | Differential pressure sliding sleeve | |
| CN203547658U (en) | Isolating valve | |
| CN209083274U (en) | Small-well cracking tubing string |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 Termination date: 20200314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |