CN104763342B - A kind of reaming assembly of pulling back for non-excavation laying pipeline - Google Patents
A kind of reaming assembly of pulling back for non-excavation laying pipeline Download PDFInfo
- Publication number
- CN104763342B CN104763342B CN201510097925.7A CN201510097925A CN104763342B CN 104763342 B CN104763342 B CN 104763342B CN 201510097925 A CN201510097925 A CN 201510097925A CN 104763342 B CN104763342 B CN 104763342B
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- CN
- China
- Prior art keywords
- cutting
- reaming
- drill body
- bionical
- pulling back
- 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.)
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Classifications
-
- 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Abstract
The present invention relates to a kind of reaming assembly of pulling back for non-excavation laying pipeline, it includes the drill body of through, and the middle part of drill body is provided with multiple step ring, and the cutting diameter of multiple step ring successively decreases along the direction of reaming；Every grade of cutting ring, which is provided between multiple cutting units being evenly distributed on the outside of drill body, the adjacent cutting unit in same one-level cutting ring, is provided with through hole, has bionical nozzle in the port of export build-in of some through holes；Also include impactor, sealing liquid joint；Connected between one end of drill body and impactor by thread seal, the other end is connected with sealing liquid joint by thread seal.Implement the pipeline installation under the conditions of no-dig technique using the present invention to pull back ream operation, the Alternative reaming drilling that a variety of detritus methods are coupled can be realized simultaneously, operating efficiency when pulling back reaming drilling not only can be effectively lifted, the power consumption of rig can also be reduced to a certain extent.
Description
Technical field
Pulled back the present invention relates to pipeline installation in non-excavating construction reaming when equipment, more particularly to a kind of be used for no-dig technique
The reaming assembly of pulling back of pipeline installation.
Background technology
" grooving pipe laying method " calls " open intestines and break tripe ", " road drawing for fun as traditional underground pipeline construction method by people
Chain " etc., such construction method can make originally that just very crowded urban transportation becomes " making the matter worse ", over the ground upper traffic and ring
Greatly, the work and life given people is brought in place of inconvenience, under the conditions of some rivers and lakes etc. more for the influence in border
Being can not be using the pipe laying mode excavated.
No-excavation construction method (Trenchless Technology or No-Dig) refers under conditions of not excavating earth surface
The technology of various underground utilities is detected, checked, laid, repair and changed, highway crossing, railway, building, river is can be widely used for
The paving of the pipelines such as pipeline, cable, the communication line of oil/gas/water supply is carried out under the conditions of river lake, paleovolcanic structure area etc.
If, repair and update, with do not influence traffic, free from environmental pollution, construction safety reliable and the cycle is short, integrated construction cost is low,
Social benefit significantly etc. series of advantages.
Under normal circumstances, when implementing non-excavation laying pipeline, a pilot hole is drilled to using Technology of Directional Drilling first, with
Afterwards drill string rear end changing-over major diameter reamer and diameter be less than the pipeline to be laid of reamer, pulled back reaming in drilling tool
Pipeline is together pulled in the drilling being drilled to simultaneously, complete the pipelaying work under the conditions of no-dig technique.For entering in Rock And Soil
Under the conditions of row no-dig technique pipe installation pull back reaming when, reamer (or being reaming bit) conventional at present includes wing reaming
Drill bit, helical counterbore drill bit, groove-like reaming bit, cutter reaming bit, shaft-like reaming bit, two-way spindle reaming
Drill bit, particle size drilling tool shape reaming bit, cutting ring shape reamer are first-class, and they are mainly the cutting using hard alloy as drill bit
Tool；The reaming drilling method used at present, the mode for mainly driving drilling tool revolution by rig carries out reaming drilling operation,
The reaming drilling efficiency and the Cutting Rock ability of existing reamer that this method is obtained are limited.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of reaming assembly of pulling back for non-excavation laying pipeline, solution
Certainly the deficiencies in the prior art.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of reaming of pulling back for non-excavation laying pipeline
Assembly, it includes the drill body of through, and the middle part of the drill body is provided with multistage cutting ring, the multistage cutting
The cutting diameter of ring successively decreases along the direction of reaming；Every grade of cutting ring is circumferentially uniformly provided with multiple cutting units, every grade of institute
Multiple cutting units in cutting ring are stated circumferentially to be evenly distributed on the outside of the drill body, and every grade of cutting
Multiple cutting units in ring are around the drill body one annulus of formation；It is adjacent described in every grade of cutting ring
Being provided between cutting unit is used for having what mud jacking liquid was discharged inside the drill body with what direct circulation mode was constantly circulated
Skewed through hole；The port of export build-in of at least one through hole has bionical nozzle；Also include impactor, sealing liquid to connect
Head；Connected between one end of the drill body and the impactor by thread seal, the other end of the drill body with
The sealing liquid joint is connected by thread seal；The middle part of the sealing liquid joint inner chamber is provided with to be had mud jacking liquid and makes it for closure
Can drill body central passage inner product accumulation of energy amount and the middle part liquid islocation plate accumulated upwards, wherein, there is mud jacking liquid to adopt
With low solid phase or unfixed phase slurry.
The beneficial effects of the invention are as follows：
1st, the one-level cutting ring of the front end path reamer that can take the lead in passes in and out the relatively small drilling of a diameter, the Kong Keqi
To the effect of pilot hole, while also having the effect of correcting drilling tool.
2nd, because reaming drilling will finally be drilled to the drilling of a certain major diameter, using the multistage reaming designed by the present invention
When device carries out reaming drilling, it will be appreciated that the drilling for reaming to be crept into the final major diameter to be reached is decomposed into (expands several times
The number of times that hole drill enters is identical with the series of multistage reamer) it is integrated when individually carrying out reaming drilling, this method can effectively drop
The energy consumption of drilling equipment during low reaming drilling, operating efficiency during lifting reaming drilling.
3rd, using the reamer of multilevel hierarchy, it can be effectively increased broken to Rock And Soil arround hole wall during reamer reaming drilling
The scope of freedom so that the reaming drilling efficiency of reamer is significantly improved；
4th, during the reaming drilling that can be pulled back when implementing non-excavation laying pipeline, multistage reamer is made to be carried by rig
For power drive a whole set of drilling tool turn round and apply appropriate the pressure of the drill pull back reaming drilling when, torsion impact device joint can be realized simultaneously
The efficient revolution Cutting Rock formula reaming drilling of the reamer of multilevel hierarchy, or hydraulic impacter combine the reamer of multilevel hierarchy
The reaming of impact rotating detritus formula drilling, not only can effectively strengthen the revolution Cutting Rock ability of multistage reamer, in certain journey
The power consumption of rig can also be reduced on degree.
Further：The middle part of the bionical nozzle is provided with inner chamber, and the internal face of the inner chamber is provided with several bionical rings
Groove；One end of the bionical nozzle is provided with the bionical nozzle entrance with the intracavity inter-connection, the other end of the bionical nozzle
Diameter provided with the bionical jet expansion with the intracavity inter-connection, and the bionical nozzle entrance goes out more than the bionical nozzle
The diameter of mouth.
Further：The bionical nozzle is integrally formed with the through hole, or the bionical nozzle by screw thread, welding or
The fixed form build-in of interference fit is at the port of export of the through hole.
Further：Angle between the axis of the axis of the through hole and the drill body is 30 ° to 60 °.
Further：The cutting unit includes cutting element, steel body and impregnated diamond strips；The steel body is fixed on the brill
On the periphery of head outer body；The cutting element build-in is in the steel body；The impregnated diamond strips are arranged on the steel
The outside of body.
Further：The cutting element is made of PDC, CBN, Si Lawujiqi, TSP, PCD material.
Further：The impactor is torsion impact device or hydraulic impacter.
Further：The described one end of sealing liquid joint away from the drill body be provided be used for transfer gear, drill string or into
The screw thread of QC road connection.
Brief description of the drawings
The total integral threedimensional model of reaming of pulling back when Fig. 1-1 is connection torsion impact device for non-excavation laying pipeline
Schematic diagram；
The total integral threedimensional model of reaming of pulling back when Fig. 1-2 is connection hydraulic impacter for non-excavation laying pipeline
Schematic diagram；
Each isolation of components of reaming assembly of pulling back when Fig. 2-1 is connection torsion impact device for non-excavation laying pipeline comes
Threedimensional model schematic diagram；
Each isolation of components of reaming assembly of pulling back when Fig. 2-2 is connection hydraulic impacter for non-excavation laying pipeline comes
Threedimensional model schematic diagram；
Fig. 3-1 is the threedimensional model axonometric schematic diagram of multistage reamer body part；
Fig. 3-2 is the threedimensional model front view of multistage reamer body part；
Fig. 3-3 is the threedimensional model sectional view of multistage reamer body part；
Fig. 3-4 is the threedimensional model sectional view of reamer body part in second embodiment；
Fig. 4-1 is the threedimensional model axonometric schematic diagram of bionical nozzle；
Fig. 4-2 is the threedimensional model sectional view of bionical nozzle；
Fig. 5-1 is to constitute the threedimensional model axonometric schematic diagram of complete multistage reamer after the bionical nozzle of build-in；
Fig. 5-2 is to constitute the threedimensional model sectional view of complete multistage reamer after the bionical nozzle of build-in；
Fig. 6-1 is the threedimensional model axonometric schematic diagram of sealing liquid joint；
Fig. 6-2 is the threedimensional model sectional view of sealing liquid joint；
Fig. 7 is the threedimensional model sectional view after multistage reamer is connected with sealing liquid joint.
In accompanying drawing, the part representated by each label is as follows：
1st, torsion impact device；2nd, hydraulic impacter；3rd, one-level cutting ring；31st, upper end connection screw thread；32nd, one-level cutting is single
Member；321st, one-level cutting element；322nd, one-level steel body；323rd, the impregnated diamond strips of one-level；33rd, one-level through hole；4th, two grades of cuttings
Ring；42nd, two grades of cutting units；421st, two grades of cutting elements；422nd, two grades of steel bodies；423rd, two grades of impregnated diamond strips；43rd, two grades pass through
Through hole；44th, lower end connection screw thread；45th, bottom liquid islocation plate；5th, sealing liquid joint；51st, upper screw thread；52nd, middle part liquid islocation plate；53rd, lower spiral shell
Line；6th, bionical nozzle；61st, bionical nozzle entrance；62nd, bionical jet expansion；63rd, bionical annular groove.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
First embodiment：
The structure of the reamer of the present invention is multi-stag, it is illustrated that in only drawn the structure of two-stage (two layers), can also be designed as
Structure more than two-stage.Multistage reamer, it includes the drill body of through, and the middle part of the drill body is circumferentially set
There is the cutting ring of multistage, the cutting diameter of the multistage cutting ring successively decreases along the direction of reaming；Every grade of cutting ring is provided with more
Multiple cutting units in individual cutting unit, every grade of cutting ring are uniformly distributed circumferentially outside the drill body
Multiple cutting units in side, and every grade of cutting ring are around the drill body one annulus of formation.
Illustrate that using multilevel hierarchy following mesh can be realized by taking the reamer with two-layer configuration that the present invention is designed as an example
's：
1st, the one-level cutting ring of the front end path reamer that can take the lead in passes in and out the relatively small drilling of a diameter, and the hole is not only
Pilot hole can be played a part of, while also having the effect of correcting drilling tool.
2nd, because reaming drilling will finally be drilled to the drilling of a certain major diameter, using the multistage reaming designed by the present invention
When device carries out reaming drilling, it will be appreciated that the drilling for reaming to be crept into the final major diameter to be reached is decomposed into (expands several times
The number of times that hole drill enters is identical with the series of multistage reamer) it is integrated when individually carrying out reaming drilling, this method can effectively drop
The energy consumption of the drilling equipment such as rig during low reaming drilling, operating efficiency during lifting reaming drilling.
3rd, using the reamer of multilevel hierarchy, it can be effectively increased broken to Rock And Soil arround hole wall during reamer reaming drilling
The scope of freedom so that the reaming drilling efficiency of reamer is significantly improved.
It is provided with that be used for will be inside the drill body constantly in every grade of cutting ring between the adjacent cutting unit
The skewed through hole for having mud jacking liquid to discharge circulated, one end of the through hole connects the inside of the drill body,
The other end of the through hole connects the outside of the drill body；The port of export build-in of at least one through hole has imitative
Raw nozzle, the number of preferably every grade of bionical nozzle is identical with the number of the cutting unit of this grade.It is continuous in direct circulation mode
The flushing liquor circulated (is more than 40m/s) at a high speed from bionical jet expansion under certain pump pressure (being more than 10MPa) effect and sprayed
The high-pressure jet of energy Relatively centralized can be formed afterwards, can reach and advanced (pre-) erosion of Rock And Soil progress for being intended to reaming drilling is broken
Broken effect, so that effectively auxiliary multi-stage reamer realizes that the reaming to Rock And Soil is crept into.
Further, since using the material of other suitable broken Rock And Soils of cutting such as PDC or CBN, Si Lawujiqi, TSP, PCD
Expect to carry out reaming drilling to the Rock And Soil arround hole wall as cutting element, generally using high-revolving technological parameter, by many
The front end of level reamer can continue to provide and drilling tool gyratory directions by being threadedly coupled a torsion impact device, the torsion impact device
Consistent impact torsion effect, can effectively strengthen reaming drilling efficiency of the multistage reamer in Rock And Soil, while certain
The energy consumption of the drilling equipments such as rig can also be reduced in degree；If in the front end of multistage reamer by being threadedly coupled a hydraulical impact
Device, then can make reaming creep into mode and be changed into rotary-percussive drilling, can effectively lift reaming of the multistage reamer to rock and creep into effect
Rate, while may also function as the effect of drill pipe release to a certain extent.It is pointed out that the torsion impact device or liquid that are connected
Dynamic impactor is the suitable any type of specification.
In summary, implement the pipe installation under the conditions of no-dig technique in Rock And Soil using the present invention to pull back reaming drilling
When, the reaming under the efficient revolution Cutting Rock mode of reamer of the torsion impact device joint with multilevel hierarchy can be realized simultaneously
Reaming drilling under drilling, or the impact rotating detritus mode of reamer of the hydraulic impacter joint with multilevel hierarchy, simultaneously
The Alternative reaming drilling method being coupled with the high-pressure jet auxiliary detritus from the high speed ejection of bionical jet expansion, can effectively be carried
Rise in Rock And Soil implement no-dig technique under the conditions of pipe installation pull back reaming drilling when operating efficiency.
The present invention will be described below in conjunction with the accompanying drawings.
As shown in Fig. 3-1, Fig. 3-2, Fig. 3-3, a kind of multistage reamer for non-excavation laying pipeline, it includes center
The drill body of insertion, the middle part of the drill body is circumferentially arranged with the cutting ring of two-stage, one-level cutting ring 3, two grades of cuttings
Ring 4.The cutting diameter of cutting ring described in two-stage successively decreases along the direction that reaming is crept into；Every grade of cutting ring is single provided with multiple cuttings
Multiple cutting units in first (one-level cutting unit 32, two grades of cutting units 42), every grade of cutting ring are circumferentially equal
It is even to be distributed on the outside of the drill body, and multiple cutting units in every grade of cutting ring surround the drill body
Form an annulus.The top of the drill body is provided with upper end connection screw thread 31, and bottom is provided with lower end connection screw thread 44.
It should be noted that：One-level cutting ring 3 and two grades of cutting rings 4 in multistage reamer involved in the present invention both may be used
Processing is in same drill body structure simultaneously, after can also processing respectively on two single drill bodies, then incite somebody to action the two
By screw thread or be otherwise attached to together composition one entirety.It is separated by between one-level cutting ring 3 and two grades of cutting rings 4 certain
Distance, it is contemplated that be set to 20 to 70cm.Processed simultaneously in same drill body with one-level cutting ring 3 and two grades of cutting rings 4
The present invention is illustrated exemplified by upper.
As shown in Fig. 5-1, Fig. 5-2, one-level cutting ring 3 and two grades of cutting rings 4 are all the main knots for cutting broken Rock And Soil
Structure, their center is the structure of insertion shape.Wherein, one-level cutting ring 3 includes multiple one-level cutting units 32, multiple one-levels
Through hole 33 and the bionical nozzle 6 of multiple one-levels；Multiple one-level through holes 33 are respectively arranged at two adjacent one-level cutting units
Between 32；The equal build-in of the port of export of each one-level through hole 33 has the bionical nozzle 6 of an one-level.Two grades of cutting rings 4 include
Multiple two grades of cutting units 42, multiple two grades of through holes 43 and multiple two grades of bionical nozzles 6.It should be noted that：Build-in is in one
The structural shape of two grades of bionical nozzles 6 in two grades of through holes 43 of the bionical nozzle 6 of one-level and build-in in level through hole 33 is
Consistent, but its size should be mutually suitable with the aperture of corresponding through hole；In addition, for the bionical nozzle 6 mentioned in the present invention,
It is not limited to the structure of bionical nozzle, it is possible to use other can produce the nozzle arrangements and pattern of high-pressure jet.
As shown in Fig. 4-1, Fig. 4-2, the middle part of the bionical nozzle (one-level, two grades of bionical nozzles 6) is provided with inner chamber, described
The internal face of inner chamber is provided with several bionical annular grooves 63, preferably：It is uniform according to certain spacing on the internal face of the inner chamber
Provided with several bionical annular grooves 63；One end of the bionical nozzle is provided with the bionical nozzle entrance 61 with the intracavity inter-connection,
The other end of the bionical nozzle is provided with the bionical jet expansion 62 with the intracavity inter-connection, and the bionical nozzle entrance 61
Diameter be more than the bionical jet expansion 62 diameter.
As shown in Fig. 5-1, Fig. 5-2, the top of one-level cutting ring 3 by upper end connection screw thread 31 and torsion impact device 1 or
Hydraulic impacter 2 is connected；Middle part is the reamer body part of ring-type, is mainly passed through by several one-level cutting units 32 and one-level
Through hole 33 is evenly distributed composition, and one-level cutting unit 32 therein is the primary structure of Rock And Soil arround the broken hole wall of cutting,
It is made up of one-level cutting element 321, one-level steel body 322 and the impregnated diamond strips 323 of one-level, and the build-in of one-level cutting element 321 is in one
The main body of one-level cutting unit 32 is constituted in level steel body 322, the arrangement mode for the one-level cutting element 321 that the present invention is used is depended on
The direction that front (cutting face) direction of the direction of drilling tool revolution, i.e. one-level cutting element 321 should be turned round with drilling tool when reaming is crept into
Unanimously.The outside that the impregnated diamond strips 323 of one-level are mounted in one-level steel body 322 is used for the gauge drilled.One-level through hole 33 is equal
It is laid in evenly between two adjacent one-level cutting units 32, in 30 ° to 60 ° of insertion shape inclined hole, one-level through hole 33
Number is consistent with the number of one-level cutting unit 32.The fixed form that the bionical nozzle 6 of one-level passes through screw thread, welding or interference fit
Build-in is at the port of export of one-level through hole 33, and the number of the bionical nozzle 6 of one-level is consistent with the number of one-level through hole 33.Can
Consider that one-level cutting element 321 is made of PDC materials, but be not limited to this, can also use CBN, Si Lawujiqi, TSP, PCD
Material etc. other suitable broken Rock And Soils of cutting is made.
The upper surface of two grades of cutting rings 4 is apart from the lower surface 20 of one-level cutting ring 3 to 70cm, and the main part in the middle part of it is
The structure of ring-type, its diameter is more than one-level cutting ring 3, and the two specific difference in diameter needs the drilling crept into according to desire reaming
Depending on diameter, it is contemplated that be set to the diameter (external diameter) of two grades of cutting rings 4 twice of the diameter (external diameter) of one-level cutting ring 3.
The mid-section body part of two grades of cutting rings 4 is mainly evenly distributed structure by several two grades of cutting units 42 and two grades of through holes 43
The primary structure of Rock And Soil arround the broken hole wall of cutting into, two grades of cutting units 42 therein, it by two grades of cutting elements 421,
Two grades of steel bodies 422 and two grades of impregnated diamond strips 423 are constituted, and two grades of build-ins of cutting element 421 constitute two grades in two grades of steel bodies 422
The main body of cutting unit 42, the arrangement mode for two grades of cutting elements 421 that the present invention is used depends on drilling tool when reaming is crept into and turned round
Direction, i.e., the fronts (cutting face) of two grades cutting elements 421 is towards should be consistent with the direction that drilling tool is turned round.Two grades of impregnated diamonds
The outside that bar 423 is mounted in two grades of steel bodies 422 is used for the gauge drilled.Two grades of through holes 43 are equably laid in adjacent two
Between two grades of cutting units 42, in 30 ° to 60 ° of insertion shape inclined hole, the number of two grades of through holes 43 and two grades of cutting units 42
Number it is consistent.Two grades of bionical nozzles 6 are by the fixed form build-in of screw thread, welding or interference fit in two grades of through holes 43
In, the number of two grades of bionical nozzles 6 is consistent with the number of two grades of through holes 43.It is contemplated that two grades of cutting elements 421 use PDC materials
Material is made, but is not limited to this, also can be using other suitable broken Rock And Soils of cutting such as CBN, Si Lawujiqi, TSP, PCD
Material is made.
The bottom of two grades of cutting rings 4 is connected by lower end connection screw thread 44 with sealing liquid joint 5.In the brill by being positioned over earth's surface
Machine provides suitable rotary torque for a whole set of present invention and pull back reaming the pressure of the drill when, one-level cutting ring 3 and two grades of cutting rings 4 are in brill
Revolution at a high speed and cut Rock And Soil arround broken hole wall under the drive of roofbolt and realize that reaming is crept into, while continuous in direct circulation mode
What is circulated has mud jacking liquid (preferably with low solid phase or unfixed phase slurry.Wherein, the low solids mud：Refer to clay content (with weight
Gauge) ＜ 10%, or refer to clay content (by volume) ＜ 4% mud；Unfixed phase slurry：Refer to be not added with clay, only by
Organic high molecular polymer and the dispersion of water mixed preparing.) from build-in in one-level cutting ring 3 and two grades of cutting rings 4
On the bionical nozzle entrances 61 of several bionical nozzles 6 flow into its inner chamber, and sprayed at a high speed and formed by bionical jet expansion 62
High-pressure jet, advanced (pre-) erosion can be carried out to Rock And Soil arround the hole wall that will crush and is crushed, to realize that auxiliary one-level is cut
The reaming drilling of ring 3 and two grades of cutting rings 4, can effectively lift operating efficiency when to Rock And Soil pull back reaming drilling.
As shown in Fig. 1-1, Fig. 1-2, Fig. 2-1, Fig. 2-2, Fig. 7, a kind of reaming of pulling back for non-excavation laying pipeline is total
Into it includes impactor, sealing liquid joint 5 and above-mentioned multistage reamer；One end of the multistage reamer and the impact
Connected between device by thread seal, the other end of the multistage reamer is connected with the sealing liquid joint by thread seal.
The endless form of slurries is direct circulation when the reaming of pulling back for implementing non-excavation laying pipeline using the present invention is crept into.
The impactor is torsion impact device 1 or hydraulic impacter 2.If connecting torsion impact device 1 implements non-excavation laying
Reaming drilling of pulling back during pipeline, then torsion impact device 1 can be that a whole set of drilling tool persistently provide consistent with drilling tool gyratory directions
Additional impact twisting force, its upper end is connected by screw thread with drill string, and lower end is connected by screw thread with multistage reamer, thus
During the reaming drilling that can be pulled back in pipeline installation under the conditions of implementing no-dig technique, multistage reamer is set to be provided by rig
When a whole set of drilling tool of power drive is turned round and reaming of pulling back is crept into, it is continuously them and extra additional impact torsion work is provided
With not only can effectively strengthening the revolution Cutting Rock ability of multistage reamer, the power of rig can also be reduced to a certain extent
Consumption.If pull back reaming drilling, hydraulic impacter 2 under the conditions of the connection implementation no-dig technique of hydraulic impacter 2 during pipeline installation
Axial reciprocating impact load can be constantly provided for a whole set of drilling tool, its upper end is connected by screw thread with drill string, and lower end is by spiral shell
Line is connected with multistage reamer, real during the reaming drilling that can so be pulled back when implementing non-excavation laying pipeline
The reaming drilling of existing impact rotating detritus mode, can be such that the reaming drilling efficiency to rock is effectively lifted, while certain
The effect of drill pipe release is may also function as in degree.
As shown in Fig. 6-1, Fig. 6-2, sealing liquid joint 5 is the multistage reamer of connection and transfer gear, drill string (or production tube
Road) part, it is mainly made up of upper screw thread 51, middle part liquid islocation plate 52 and lower screw thread 53.Its top is by upper screw thread 51 with
Connection screw thread 44 is held to be connected；Middle part is middle part liquid islocation plate 52, implements the expansion of pulling back of pipe installation under the conditions of no-dig technique for closure
What is constantly circulated in drilling tool when hole drill enters has mud jacking liquid, so as to there is mud jacking liquid energy enough in the central passage of multistage reamer
Constantly put aside energy and accumulate upwards, so that there is mud jacking liquid energy enough along some one-level through holes 33 and two grades of through holes
43 inflow build-ins form high-pressure jet in respective bionical nozzle 6；Bottom by lower screw thread 53 and transfer gear, drill string (or
Finished product pipeline) etc. be connected, if transfer gear etc. not using threaded connection by the way of, can pass through at lower screw thread 53 connection one
Suitable switch transition joint is used to connect transfer gear etc..
Second embodiment：
As shown in Figure 3-4, it is the multistage reamer structural representation of another non-excavation laying pipeline of the invention, second is real
Apply multistage reamer overall structure in example essentially identical with multistage reamer in first embodiment, difference is, drill bit sheet
Internal portion is provided with the bottom liquid islocation plate 45 for being used for obstructing its central passage at position on the lower side.So in the expansion using the present embodiment
During the device of hole, without external sealing liquid joint 5, transfer gear, drill string (or finished product pipeline) are directly connected by lower end connection screw thread 44
Deng.
According to second embodiment, present invention also offers another reaming assembly of pulling back for non-excavation laying pipeline,
It includes impactor and multistage reamer (using the multistage reamer in second embodiment)；One end of multistage reamer with it is described
Connected between impactor by thread seal, the other end of multistage reamer connects transfer gear by lower end connection screw thread 44, bored
Roofbolt (or finished product pipeline) etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (8)
1. a kind of reaming assembly of pulling back for non-excavation laying pipeline, it is characterised in that：Drill body including through,
Successively decrease provided with multistage cutting ring, the cutting diameter of the multistage cutting ring along the direction of reaming at the middle part of the drill body；
Every grade of cutting ring is circumferentially uniformly provided with multiple cutting unit edges in multiple cutting units, every grade of cutting ring
Circumferentially it is evenly distributed on the outside of the drill body, and multiple cutting units in every grade of cutting ring are around described
Drill body one annulus of formation；
In every grade of cutting ring between the adjacent cutting unit be provided be used for by inside the drill body with direct circulation
What mode was constantly circulated has the skewed through hole that mud jacking liquid is discharged；The port of export build-in of at least one through hole
There is bionical nozzle；Also include impactor, sealing liquid joint；It is close by screw thread between one end of the drill body and the impactor
Envelope connection, the other end of the drill body is connected with the sealing liquid joint by thread seal；The sealing liquid joint inner chamber
Middle part be provided be used for block have mud jacking liquid and can drill body central passage inner product accumulation of energy amount and accumulate upwards
The middle part liquid islocation plate come, wherein, there is mud jacking liquid to use low solid phase or unfixed phase slurry.
2. a kind of reaming assembly of pulling back for non-excavation laying pipeline according to claim 1, it is characterised in that：It is described imitative
The middle part of raw nozzle is provided with inner chamber, and the internal face of the inner chamber is provided with several bionical annular grooves；One end of the bionical nozzle
Provided with the bionical nozzle entrance with the intracavity inter-connection, the other end of the bionical nozzle is provided with and the intracavity inter-connection
Bionical jet expansion, and diameter of the diameter more than the bionical jet expansion of the bionical nozzle entrance.
3. a kind of reaming assembly of pulling back for non-excavation laying pipeline according to claim 1, it is characterised in that：It is described imitative
Raw nozzle is integrally formed with the through hole, or the bionical nozzle is embedding by the fixed form of screw thread, welding or interference fit
At the port of export for being fixed in the through hole.
4. a kind of reaming assembly of pulling back for non-excavation laying pipeline according to claim 1, it is characterised in that：It is described to pass through
Angle between the axis of the axis of through hole and the drill body is 30 ° to 60 °.
5. a kind of reaming assembly of pulling back for non-excavation laying pipeline according to claim 1, it is characterised in that：It is described to cut
Cutting unit includes cutting element, steel body and impregnated diamond strips；The steel body is fixed on the periphery on the outside of the drill body；
The cutting element build-in is in the steel body；The impregnated diamond strips are arranged on the outside of the steel body.
6. a kind of reaming assembly of pulling back for non-excavation laying pipeline according to claim 5, it is characterised in that：It is described to cut
Tool is cut to be made of PDC, CBN, Si Lawujiqi, TSP, PCD material.
7. a kind of reaming assembly of pulling back for non-excavation laying pipeline according to claim 1, it is characterised in that：The punching
Device is hit for torsion impact device or hydraulic impacter.
8. a kind of reaming assembly of pulling back for non-excavation laying pipeline according to claim 1, it is characterised in that：The envelope
The one end of liquid joint away from the drill body is provided with the screw thread for being used for being connected with transfer gear, drill string or finished product pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097925.7A CN104763342B (en) | 2015-03-05 | 2015-03-05 | A kind of reaming assembly of pulling back for non-excavation laying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097925.7A CN104763342B (en) | 2015-03-05 | 2015-03-05 | A kind of reaming assembly of pulling back for non-excavation laying pipeline |
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| Publication Number | Publication Date |
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| CN104763342A CN104763342A (en) | 2015-07-08 |
| CN104763342B true CN104763342B (en) | 2017-10-24 |
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| CN201510097925.7A Expired - Fee Related CN104763342B (en) | 2015-03-05 | 2015-03-05 | A kind of reaming assembly of pulling back for non-excavation laying pipeline |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756561A (en) * | 2016-04-02 | 2016-07-13 | 武汉科技大学 | Hole drilling and expanding integrated device |
| CN106439219B (en) * | 2016-09-30 | 2018-08-17 | 中国一冶集团有限公司 | Reamer separator and its construction method for no-dig technique directional drilling pipeline |
| CN106890828B (en) * | 2017-03-29 | 2023-05-30 | 成都理工大学 | Multifunctional pipe inner wall cleaning device and cleaning method thereof |
| CN108487864B (en) * | 2018-03-19 | 2019-11-05 | 中煤科工集团西安研究院有限公司 | The double dynamical major diameter staged borehole-enlarging drilling tool of underground coal mine rock stratum directional hole and method |
| CN111550189B (en) * | 2020-06-11 | 2022-03-18 | 胜利油田万和石油工程技术有限责任公司 | Drill bit for geological exploration |
| CN113702211B (en) * | 2021-10-27 | 2022-01-04 | 成都理工大学 | Hole wall lateral expansion rotary shearing device for drilling shearing test and testing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204476278U (en) * | 2015-03-05 | 2015-07-15 | 成都理工大学 | A kind of multistage reamer for non-excavation laying pipeline and reaming assembly of pulling back |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2112858C1 (en) * | 1996-11-22 | 1998-06-10 | Ясашин Виталий Анатольевич | Roller reamer |
| CN102199992B (en) * | 2011-05-06 | 2013-05-15 | 东北石油大学 | A spinning-reaming composite drill |
| CN203188914U (en) * | 2013-04-12 | 2013-09-11 | 谢龙水 | Hard rock diamond step-by-step chambering combined drill |
| CN203499568U (en) * | 2013-08-28 | 2014-03-26 | 中国地质科学院勘探技术研究所 | Split PDC (polycrystalline diamond compact) guide chambering drilling bit |
| CN203905815U (en) * | 2014-02-21 | 2014-10-29 | 西南石油大学 | Double-core reaming bit with multiple stages of reaming bodies |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204476278U (en) * | 2015-03-05 | 2015-07-15 | 成都理工大学 | A kind of multistage reamer for non-excavation laying pipeline and reaming assembly of pulling back |
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