CN101203656A - Dth-hammer drilling device and overburden drilling method - Google Patents
Dth-hammer drilling device and overburden drilling method Download PDFInfo
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- CN101203656A CN101203656A CNA2006800204977A CN200680020497A CN101203656A CN 101203656 A CN101203656 A CN 101203656A CN A2006800204977 A CNA2006800204977 A CN A2006800204977A CN 200680020497 A CN200680020497 A CN 200680020497A CN 101203656 A CN101203656 A CN 101203656A
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- 238000005553 drilling Methods 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000005520 cutting process Methods 0.000 claims abstract description 38
- 239000002699 waste material Substances 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000009527 percussion Methods 0.000 claims abstract description 6
- 238000009991 scouring Methods 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 13
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 10
- 229920002554 vinyl polymer Polymers 0.000 claims description 10
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 abstract 3
- 239000003570 air Substances 0.000 description 16
- 239000011435 rock Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical group [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Classifications
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
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- 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
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a DTH-hammer drilling device, comprising a down-the-hole- (DTH-) hammer (6) with a percussion drill bit (9), a drill pipe (2) with a waste conduit for the cuttings and at least one supply conduit for the flushing medium and a flushing medium supply device, wherein a seal (18) for sealing the borehole against the borehole opening is provided in a fixed distance from the drilling head (6), or wherein a casing tube (12) is connected to the drill bit (9). The invention further relates to an overburden drilling method, comprising rotating a drill bit (9), supplying an energy transfer medium through a drill pipe (2) to the rotating drill bit (9) for transmitting a percussive action thereonto, dragging a casing tube (12) along with the drill bit (9) and flushing away cuttings through the drill pipe (2).
Description
Technical field
The present invention relates to a kind of drilling equipment, particularly utilize the drilling equipment of down-the-hole hammer, and relate to a kind of drilling method, the drilling method that creeps into especially for covering layer (overburden).
Background technology
The drilling equipment that is called " down-the-hole hammer (down-the-hole hammer) " has the rotary impact that drops in the boring and creeps into head.Be used to represent that other term of drilling equipment has " hammer (Inhole-hammer) in the hole " and " DTH hammer ", will use these terms hereinafter.
Under the application's situation, covering layer creeps into and is used for representing wherein to pull the drilling method that the pipe of sleeve pipe is provided for boring in the foot of hole zone at least.
In German patent application DE 43 10 726 A1 that announce, a kind of rig of the DTH of having hammer has been described, wherein, utilize distributor to be fed to drill bit central authorities from the peripheral conduits of rig, and promote drilling cuttings by the pipeline that is arranged in rig central authorities as the compressed air of scouring media.
This known equipment also has the skirt section of the lower ending opening in the zone that is arranged in hammer, and the compressed air that is rich in drilling cuttings is supplied to distributor by this skirt section.
In U.S. Patent application US 2005/0103527 A1, a kind of double-walled drilling pipe has been described, its inner part forms the flexible pipe of upwards carrying drilling cuttings by it, is pushed down by the space between the interior outer flexible tube and bore slurry.
In International Application No. WO 02/081856 A1, a kind of head that creeps into has been described, wherein scouring media outwards is fed to the edge of drill bit, and drilling cuttings is transported to the periphery that creeps into head from the middle body of drill bit.
Have been found that known drilling equipment needs high scouring media flow velocity on the one hand, on the other hand in some applications, bore dark deficiency, drilling speed is unsatisfactory to a certain extent, and perhaps the bore diameter of Xing Chenging is less.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of drilling equipment and method that overcomes the defective of prior art; For example, by having the effect of increase, promptly provide bigger brill deeply or bigger bore diameter quickly or by littler scouring media flow velocity.
According to first aspect, drilling equipment according to the present invention has: the DTH hammer that has drill hammer; Drilling pipe, it has the waste pipe that is used for drilling cuttings and is used for the supply line of scouring media with at least one; And the overburden tube that is connected to described drill bit.
According to an embodiment of the present invention, ring is installed above distributor, this ring preferably can be furnished with at least one around described drilling pipe rotation on this ring, and preferred two to five dishes are as seal.Specifically, adopt the rubber disc of being separated by the vinyl disc than minor diameter, wherein the external diameter of rubber disc is corresponding to the internal diameter of (promptly approximate greatly or be slightly larger than) described overburden tube.The shop of described rubber disc and vinyl disc is put preferably and is kept together by two less steel disks (they are screwed around together) of diameter.In the axial direction, described dish and to support the black box of ring of described dish preferably fixing by flange etc.
By this measure, can realize reducing the pressure loss of scouring media by the rock intermediate gap.Avoided owing to borehole volume in the drilling process increases the additonal pressure loss that causes.As a result, the amount that drives the necessary energy transmission medium of described hammer is enough to be used as scouring media after leaving described hammer, and characteristic of rock (gap, water) is irrelevant basically with on every side for this.
And, the invention provides the method that the covering layer that utilizes air-lift unit creeps into.According to this aspect, the method according to this invention comprises at least boring on the dark major part supplies scouring media, specifically at periphery supply scouring media transporting drilling cuttings, and pull along near the overburden tube the rock on every side.Here, preferably, described overburden tube is not rotated, perhaps must be slowly than the drilling pipe rotation that is arranged in central authorities with respect to rock on every side many, with the supply scouring media with transport scouring media.
In a preferred embodiment, the method according to this invention also comprises with respect to boring opening sealing foot of hole, specifically is to pull along sealing mat.Described pad with respect to rock on every side at the most with the speed rotation of described drilling pipe, and at least with the speed rotation of described overburden tube.
According on the other hand, provide a kind of rotary impact to creep into method, this method is included in when described hammer is rotated by the hammer supplying energy of energy transmission medium in being arranged in boring.
According to another aspect, drilling equipment according to the present invention has the free cross section that reduces (free cross-section) around described hammer, and this free cross section is at most ten times big of free cross section in the waste pipe.
Other favourable embodiment and details are disclosed in dependent claims, following description and accompanying drawing.Claim is intended to for briefly limiting non-limiting way of the present invention.
Description of drawings
Fig. 1 is the longitudinal sectional view according to drilling equipment of the present invention;
Fig. 2 is the cross-sectional view according to drilling equipment of the present invention;
Fig. 3 is the cross-sectional view of the connector (plug) that uses with the present invention;
Fig. 4 is the skeleton diagram according to drilling equipment of the present invention;
Fig. 5 is the local longitudinal sectional view according to another drilling equipment of the present invention.
The specific embodiment
In the embodiment according to Fig. 1 and Fig. 2, rig 1 comprises drilling pipe 2, and this drilling pipe has central waste pipe 3 and is arranged in the air supply line 4 of periphery.Connector 5 is soldered to the lower end of drilling pipe 2, DTH creeps into 6 and twists by its central connector 7 and to be connected in the connector 5, this central connector 7 comprises compressed air supply opening 8, creeps into the compressed air that 6 supply is used to drive its drill hammer 9 by this compressed air supply opening 8 to DTH.The diameter of drill bit 9 is greater than the diameter of drilling pipe 2, and greater than the diameter of the drive part of DTH drill bit 6.In connector 5, supply line portion 10 is from the waste pipe that the is arranged in central authorities 3 oblique inlet openings 11 that lead to lateral arrangement down of drilling pipe 2.The middle section of the connector 7 that creeps into head is led in air duct portion 13 via connecting endless belt 111 from the ambient air pipeline 4 of drilling pipe 2.
In the embodiment according to Fig. 1, drill bit 9 also comprises the discharge tube 46 that is used for from the compressed air 47 of hammering the 6 supply line portions 41 that flow to the compressed air 42 of drill bit 9, supply line 43, waste pipe 44, bypass (chokes branch road) 45 into shape and being used for flowing back to the surface.In the surface of drill bit 9, be furnished with the brill element 50a and the 50b of starter and reaming bit respectively.Reaming bit 9b is connected to starter 9a on the one hand releasedly again by retaining element 51,52,53, be rotationally attached to casing shoe 15 on the other hand, thereby reaming bit 9b can pull along casing shoe 15 and the overburden tube 12 that is welded on the casing shoe 15.Thereby overburden tube 12 is not rotated, or must be slowly with respect to rock on every side than drill bit 9 rotations many, this depends on friction that drill hole wall provides and the torque that applies by drill bit 9.
Has 30m
3/ min～80m
3/ min, preferred 50m
3/ min～70m
3Compressor 60 usefulness of the combinations produce ability of/min act on 18, and " DTH hammer and outer tube diameter are that 200mm, diameter of inner pipe are the compressed air source of the drilling pipe of 125mm.Along with the increase of drilling depth and drilling cuttings particle size, correspondingly use bigger air delivery rate.And delivery rate and bore dia are proportional.
Boring is at least bottom the hole and above lining cap rock pipe 12 coatings in the zone of hammer 6.Above connector 5, connector 18 (Fig. 3) be set to closely to be assemblied in overburden tube 12 between drilling pipe 2 sealing mat and in drilling process, transported downwards with drilling pipe 2.In illustrated embodiment, connector 18 comprises three resilient discs 22 that supported in isolated mode by two less rigid disks 22 of diameter.Two to four or five rubber disc are preferred, and they are spaced apart by a plurality of vinyl discs of few one of quantity.Piling up by identical steel disk 24 of diameter and vinyl disc 22 and six bolts 28 and the nut that pass hole 26 in the dish of rubber disc and vinyl disc is maintained at both sides.Pan Dui is arranged on the erection loop 30, and by can be fastening by the approaching bolt 32 of flange hole 31, thereby erection loop 30 is rotatably installed on the drilling pipe 12, and fixing in the axial direction by being soldered to retainer ring 34 on the drilling pipe 22.Arrange that by this when the inwall of rubber disc 20 contact overburden tube 12, erection loop 30 does not rotate with drilling pipe 12, or may rotate lentamente.The seal disc of connector 18 with the speed that is at least overburden tube and less than the speed of drilling pipe 2 with respect to rock rotation on every side.In optional embodiment (not shown), arrange that on erection loop 30 expandable tubular ring (" packer ") replaces dish to pile up.In another unshowned modified example, overburden tube is not set, thereby rubber disc seals against drill hole wall correspondingly.
Use for example is of a size of 711, and (pipe of 28 ") X8mm is as overburden tube 18, and the rubber disc 20 of connector is assembled to it in the internal diameter of 695mm.The thickness of the rubber disc of connector 18, steel disk and vinyl disc all is 15mm.These dishes are installed on as shown in Figure 3 the bronze ring 30, this bronze ring 30 again rotatably slidable fit (sled) be on the drilling pipe 2 of 200mm at external diameter, and by retainer ring 34 axial restraints.
Above connector 5, be furnished with drill collar 36 (referring to Fig. 4), be used to cushion upwards hammer action and guiding hammer action downwards thus.For example, drill collar 36 forms the part of drilling pipe 2, has to be filled with plumbous outer sleeve.Connector 18 is arranged in drill collar 36 tops, and perhaps preferred arrangements is below drill collar 36.
In the above-described embodiments, overburden tube is continuous pipeline, and this pipeline adds (appended) constantly and can stay in the boring after creeping in drilling process.In optional drilling equipment, overburden tube is not added above connector, but passes through for example cover piece sealing of frusto-conical in the top.In this case, optionally, this cover piece forms sealing mat, thereby can save (dispensible) described connector.Here, cover piece rotatably seals against drilling pipe.
In another embodiment (referring to Fig. 5), be arranged in side entrance opening 41 belows around hammer 6 telescopic pipe 14, wherein telescopic pipe is below inlet opening 41, preferably in its lower end sealing, and double-walled preferably.In this embodiment, telescopic pipe 14 extends upward and surpasses inlet opening 41 slightly, promptly extends up to the top edge of connector 5, and wherein pipeline 115 is formed in the telescopic pipe 14 to be used for side entrance opening 11.Thereby scouring media is forced to flow through the narrow annular space (outer shaded area among Fig. 2) between telescopic pipe 14 and the overburden tube 12.Because narrow free cross section, the flow velocity at the height place of hammer 6 increases, thereby guarantees blowing out of drilling cuttings.
In the method according to the invention, rotary drilling-head 9 is fed to hammer 6 by drilling pipe 2 with energy transmission medium (for example a part of scouring media), simultaneously so that percussion action is sent on the drill bit 9 of rotation.Pull sealing mat 18 between overburden tube 12 and overburden tube 12 and the drilling pipe 2 with drill bit 9, thereby drilling cuttings is washed away by drilling pipe 2.Can replenish overburden tube continuously at the overburden tube upper end at the boring opening part, perhaps can be after seal be installed at the top seal of overburden tube.Under former instance, overburden tube can be stayed after creeping into end in the boring, perhaps takes out from the hole.Under latter instance, the advantage that is had is, along overburden tube pull and the frictional resistance that produces remain and bore dark irrelevant, therefore not to boring the real restriction of dark setting.
The advantage that drilling method of the present invention has is, transport so that scouring media is redirected by connector 18 along air dispensing connector 5 tops, and, kept the barometric gradient that is enough to blow out drilling cuttings between foot of hole and the boring opening by pulling along overburden tube 12.On the one hand, scouring media can not escape in the gap in the rock on every side, and on the other hand, it is constant that the volume that pressure acted on keeps in drilling process, thereby less relatively.
In another preferred embodiment, if necessary, then will be used for flowing through in the zone that cross section is limited in hammer of drilling cuttings in the following manner by telescopic pipe around hammer, promptly, making this cross section be at most 10 times of interior cross section (the interior hatched area among Fig. 2) of the waste pipe of drilling pipe, preferably be not less than cross section in this on the other hand, specifically is at least four times big, and be preferably especially six big to octuple, thereby even thick drilling cuttings also can pass through.Also can realize necessary restriction by oversize hammer, this hammer preferably is being lower than under its nominal operating pressure (for example, less than 6.9 crust) by chokes, thereby nominally can not export and damage drill bit owing to its excessive energy.And the shape of cross section of limiting device can for example, can have undulating circumferential for being different from columnar shape, thereby a plurality of more and restricted parts still less that replace are provided respectively.
Preferably with the waste pipe of overburden tube, drilling pipe and optionally telescopic pipe form columnarly, specifically be concentric.In this case, three length (referring to Fig. 2):
A=hammers or centers on the external diameter of the telescopic pipe (if any) of hammer layout into shape;
NB=is positioned at 1.5 to 4 times of internal diameter B of the waste pipe that is used for scouring media of distributor top, is preferably 2.5 to 3 times;
The internal diameter of C=overburden tube does not perhaps have the internal diameter of holing under the situation of overburden tube at bottom place, hole,
When being arranged to geometry, the formation length of side is the acute triangle of A, nB and C, or preferred right-angled triangle.And, C＞5.5B for example, preferred C＞nB.
By these measures, guarantee that drilling cuttings is blown in the drilling pipe through hammer in the periphery, and can not be accumulated in the boring.
Optional preferably single wall or double-walled of telescopic pipe, and can comprise pipeline or the otch that the inlet opening that makes distributor links to each other with annular space around telescopic pipe.And telescopic pipe can extend to drilling pipe or distributor in the top, and extends to the lower end of hammer in its lower ends downward.Preferably, the lower end closed of described equipment or pipe, but the below is just enough as long as sealing place is positioned at the distributor inlet.
Thereby, can make the drilling cuttings that is entrained in the scouring media flow to the inlet opening of distributor around telescopic pipe, thereby make drilling cuttings accelerate to its hoisting velocity with sufficiently high speed.
In a preferred embodiment, in first section, utilize this telescopic pipe to carry out described drilling method with relatively large aperture; After boring reaches certain depth, there be not telescopic pipe or having under the situation than the telescopic pipe of minor diameter to creep into second section with less aperture.In upper wider bore section, for example cutting ferrule (detention casing) can be installed.In this case, can pass through essentially identical parts, and the mode that requires corresponding minimizing of space, time and cost aspect is finished whole drilling operation.
Claims (according to the modification of the 19th of treaty)
1. a DTH hammer drill advances equipment, and this DTH hammer drill advances equipment and comprises:
Down-the-hole (DTH) with drill hammer creeps into head; And
Drilling pipe, this drilling pipe have the waste pipe that is used for drilling cuttings and are used for the supply line of scouring media with at least one,
Wherein be provided with seal, be used for respect to boring opening sealing boring with a described fixed distance place of creeping into.
2. DTH hammer drill according to claim 1 advances equipment, and this equipment also comprises the sleeve pipe that is rotationally attached to described drill hammer.
3. a DTH hammer drill advances equipment, and this DTH hammer drill advances equipment and comprises:
Down-the-hole (DTH) with drill hammer creeps into head; And
Drilling pipe, this drilling pipe have the waste pipe that is used for drilling cuttings and are used for the supply line of scouring media with at least one,
This equipment also comprises the sleeve pipe that is rotationally attached to described drill hammer.
4. DTH hammer drill according to claim 3 advances equipment, and this equipment also comprises the seal that is used for respect to boring opening sealing boring.
5. advance equipment according to each described DTH hammer drill in the claim 2 to 4, this equipment also comprises the telescopic pipe that is arranged between described hammer and the described sleeve pipe.
6. DTH hammer drill according to claim 5 advances equipment, and wherein said telescopic pipe is below the inlet of described waste pipe, preferably in its place, bottom sealing.
7. a DTH hammer drill advances equipment, and this DTH hammer drill advances equipment and comprises:
Down-the-hole (DTH) with drill hammer creeps into head;
Drilling pipe, this drilling pipe have the waste pipe that is used for drilling cuttings and are used for the supply line of scouring media with at least one; And
Telescopic pipe, this telescopic pipe center on described hammer to be arranged, and below the inlet of described waste pipe, preferably in its place, bottom sealing.
8. DTH hammer drill according to claim 7 advances equipment, and this equipment also comprises the sleeve pipe that is connected to described drill bit.
9. advance equipment according to claim 5 or 8 described DTH hammer drills, wherein said sleeve pipe and described telescopic pipe have cylindrical shape.
10. DTH hammer drill according to claim 9 advances equipment, and wherein said sleeve pipe and described telescopic pipe are arranged with one heart.
11. DTH hammer drill according to claim 10 advances equipment, the internal diameter of the n of the internal diameter of the outer diameter A of wherein said telescopic pipe, described cylindrical shape waste pipe times nB and described sleeve pipe satisfies such condition, the length of side is that the triangle of A, nB and C is right-angled triangle or acute triangle, wherein 1.5＜n＜4, preferably 2.5＜n＜3.
12. advance equipment according to each described DTH hammer drill in the claim 1 to 11, this equipment also comprises the scouring media supply equipment.
13. advance equipment according to each described DTH hammer drill in the claim 1 to 12, wherein in the zone of described hammer, be at most ten times big of free cross sectional area of described waste pipe around the free cross sectional area of described hammer, and the free cross sectional area with described waste pipe is the same big at least.
14. DTH hammer drill according to claim 13 advances equipment, is at least four times big of free cross sectional area of described waste pipe around the free cross sectional area of described hammer wherein, is preferably six big to octuple.
15. advance equipment according to each described DTH hammer drill in the aforementioned claim, wherein said waste pipe is centered on by described at least one supply line.
16. advance equipment according to each described DTH hammer drill in the aforementioned claim, wherein said seal comprises two to five, specifically is three isolated resilient discs.
17. DTH hammer drill according to claim 16 advances equipment, wherein two to five, specifically be three rubber disc by less flexible dish or/and vinyl disc separately.
18. DTH hammer drill according to claim 17 advances equipment, the diameter of wherein said vinyl disc is less than the diameter of described rubber disc.
19. advance equipment according to each described DTH hammer drill in the claim 16 to 18, wherein said dish is arranged on the erection loop of rotatably arranging around described drilling pipe.
20. a covering layer drilling method, this method comprises:
Make the drill bit rotation;
By drilling pipe energy transmission medium is fed to the described drill bit of rotation, percussion action is sent to described drill bit;
Pull sleeve pipe with described drill bit; And
Waste pipe by described drilling pipe washes away drilling cuttings.
21. drilling method according to claim 20, this method also comprise air is compressed so that described energy transmission medium to be provided.
22., wherein after described energy transmission medium acts on the described drill bit, wash away drilling cuttings by this energy transmission medium to small part according to claim 20 or 21 described drilling methods.
23. according to each described drilling method in the claim 20 to 22, wherein with 50m/s at least, the speed that is preferably greater than 60m/s promotes described drilling cuttings by described drilling pipe.
24. according to each described drilling method in the claim 20 to 23, this method also comprises around described hammer arranges telescopic pipe, and washes away drilling cuttings around described telescopic pipe, then drilling cuttings is flushed in the described waste pipe.
25. drilling method according to claim 24, wherein undertaken first and creep into section getting out the larger-diameter first boring section, and creep into section to get out the second boring section not having to carry out second under the situation of telescopic pipe than minor diameter by being arranged in telescopic pipe between described hammer and the described sleeve pipe.
26. a drilling method, this method comprises:
Make the drill bit rotation;
By drilling pipe energy transmission medium is fed to the described drill bit of rotation, percussion action is sent to described drill bit; And
Waste pipe by described drilling pipe washes away drilling cuttings, wherein undertaken first and creep into section to get out the larger-diameter first boring section by being arranged in telescopic pipe around the described hammer, and creep into section to get out the second boring section not having to carry out under the situation of telescopic pipe second than minor diameter, wherein in the first boring section, wash away drilling cuttings around described telescopic pipe.
27. also comprising with described drill bit, drilling method according to claim 26, this method pull along sleeve pipe.
28. according to each described drilling method in the claim 20 to 27, this method also comprise along between described sleeve pipe and the described drilling pipe or the pad between drill hole wall and the described drilling pipe pull.
Claims (28)
1. a DTH hammer drill advances equipment, and this DTH hammer drill advances equipment and comprises:
Down-the-hole (DTH) with drill hammer creeps into head; And
Drilling pipe, this drilling pipe have the waste pipe that is used for drilling cuttings and are used for the supply line of scouring media with at least one,
Wherein be provided with seal, be used for respect to boring opening sealing boring with a described fixed distance place of creeping into.
2. DTH hammer drill according to claim 1 advances equipment, and this equipment also comprises the sleeve pipe that is connected to described drill bit.
3. a DTH hammer drill advances equipment, and this DTH hammer drill advances equipment and comprises:
Down-the-hole (DTH) with drill hammer creeps into head; And
Drilling pipe, this drilling pipe have the waste pipe that is used for drilling cuttings and are used for the supply line of scouring media with at least one,
This equipment also comprises the sleeve pipe that is connected to described drill bit.
4. DTH hammer drill according to claim 3 advances equipment, and this equipment also comprises the seal that is used for respect to boring opening sealing boring.
5. advance equipment according to each described DTH hammer drill in the claim 2 to 4, this equipment also comprises the telescopic pipe that is arranged between described hammer and the described sleeve pipe.
6. DTH hammer drill according to claim 5 advances equipment, and wherein said telescopic pipe is below the inlet of described waste pipe, preferably in its place, bottom sealing.
7. a DTH hammer drill advances equipment, and this DTH hammer drill advances equipment and comprises:
Down-the-hole (DTH) with drill hammer creeps into head;
Drilling pipe, this drilling pipe have the waste pipe that is used for drilling cuttings and are used for the supply line of scouring media with at least one; And
Telescopic pipe, this telescopic pipe center on described hammer to be arranged, and below the inlet of described waste pipe, preferably in its place, bottom sealing.
8. DTH hammer drill according to claim 7 advances equipment, and this equipment also comprises the sleeve pipe that is connected to described drill bit.
9. advance equipment according to claim 5 or 8 described DTH hammer drills, wherein said sleeve pipe and described telescopic pipe have cylindrical shape.
10. DTH hammer drill according to claim 9 advances equipment, and wherein said sleeve pipe and described telescopic pipe are arranged with one heart.
11. DTH hammer drill according to claim 10 advances equipment, the internal diameter of the n of the internal diameter of the outer diameter A of wherein said telescopic pipe, described cylindrical shape waste pipe times nB and described sleeve pipe satisfies such condition, promptly, the length of side is that the triangle of A, nB and C is right-angled triangle or acute triangle, wherein 1.5＜n＜4, preferably 2.5＜n＜3.
12. advance equipment according to each described DTH hammer drill in the claim 1 to 11, this equipment also comprises the scouring media supply equipment.
13. advance equipment according to each described DTH hammer drill in the claim 1 to 12, wherein in the zone of described hammer, be at most ten times big of free cross sectional area of described waste pipe around the free cross sectional area of described hammer, and the free cross sectional area with described waste pipe is the same big at least.
14. DTH hammer drill according to claim 13 advances equipment, is at least four times big of free cross sectional area of described waste pipe around the free cross sectional area of described hammer wherein, is preferably six big to octuple.
15. advance equipment according to each described DTH hammer drill in the aforementioned claim, wherein said waste pipe is centered on by described at least one supply line.
16. advance equipment according to each described DTH hammer drill in the aforementioned claim, wherein said seal comprises two to five, specifically is three isolated resilient discs.
17. DTH hammer drill according to claim 16 advances equipment, wherein two to five, specifically be three rubber disc by less flexible dish or/and vinyl disc separately.
18. DTH hammer drill according to claim 17 advances equipment, the diameter of wherein said vinyl disc is less than the diameter of described rubber disc.
19. advance equipment according to each described DTH hammer drill in the claim 16 to 18, wherein said dish is arranged on the erection loop of rotatably arranging around described drilling pipe.
20. a covering layer drilling method, this method comprises:
Make the drill bit rotation;
By drilling pipe energy transmission medium is fed to the described drill bit of rotation, percussion action is sent to described drill bit;
Pull sleeve pipe with described drill bit; And
Waste pipe by described drilling pipe washes away drilling cuttings.
21. drilling method according to claim 20, this method also comprise air is compressed so that described energy transmission medium to be provided.
22., wherein after described energy transmission medium acts on the described drill bit, wash away drilling cuttings by this energy transmission medium at least in part according to claim 20 or 21 described drilling methods.
23. according to each described drilling method in the claim 20 to 22, wherein with 50m/s at least, the speed that is preferably greater than 60m/s promotes described drilling cuttings by described drilling pipe.
24. according to each described drilling method in the claim 20 to 23, this method also comprises around described hammer arranges telescopic pipe, and washes away drilling cuttings around described telescopic pipe.
25. drilling method according to claim 22, wherein undertaken first and creep into section getting out the larger-diameter first boring section, and creep into section to get out the second boring section not having to carry out second under the situation of telescopic pipe than minor diameter by being arranged in telescopic pipe between described hammer and the described sleeve pipe.
26. a drilling method, this method comprises:
Make the drill bit rotation;
By drilling pipe energy transmission medium is fed to the described drill bit of rotation, percussion action is sent to described drill bit; And
Waste pipe by described drilling pipe washes away drilling cuttings, wherein undertaken first and creep into section to get out the larger-diameter first boring section by being arranged in telescopic pipe around the described hammer, and creep into section to get out the second boring section not having to carry out under the situation of telescopic pipe second than minor diameter, wherein in the first boring section, wash away drilling cuttings around described telescopic pipe.
27. also comprising with described drill bit, drilling method according to claim 26, this method pull along sleeve pipe.
28. according to each described drilling method in the claim 20 to 27, this method also comprise along between described sleeve pipe and the described drilling pipe or the pad between drill hole wall and the described drilling pipe pull.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05012538A EP1731708B1 (en) | 2005-06-10 | 2005-06-10 | Sledgehammer drilling apparatus and method |
| EP05012538.4 | 2005-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101203656A true CN101203656A (en) | 2008-06-18 |
Family
ID=35229884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800204977A Pending CN101203656A (en) | 2005-06-10 | 2006-06-07 | Dth-hammer drilling device and overburden drilling method |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20090101413A1 (en) |
| EP (2) | EP1731708B1 (en) |
| CN (1) | CN101203656A (en) |
| AP (1) | AP2007004293A0 (en) |
| AT (1) | ATE369481T1 (en) |
| AU (1) | AU2006256971A1 (en) |
| CA (1) | CA2654785A1 (en) |
| DE (1) | DE502005001190D1 (en) |
| EA (1) | EA014437B1 (en) |
| WO (1) | WO2006131339A1 (en) |
| ZA (1) | ZA200800106B (en) |
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| CN102990461A (en) * | 2011-09-08 | 2013-03-27 | Tmt-Bbg研究与开发有限公司 | Device for supplying flushing media to a hammer drill |
| CN104074471A (en) * | 2014-07-16 | 2014-10-01 | 徐州工程学院 | Rotating joint structure of ultra large diameter drilling machine |
| CN104563951A (en) * | 2014-12-25 | 2015-04-29 | 贵州省交通规划勘察设计研究院股份有限公司 | Isolating device for impact holing drilled slurry |
| CN105041246A (en) * | 2015-02-26 | 2015-11-11 | 徐州徐工基础工程机械有限公司 | Direct-reverse circulation DTH hammer transfer structure |
| CN105041220A (en) * | 2015-07-27 | 2015-11-11 | 王乐康 | Impact drill bit of full-hydraulic reverse circulation drilling machine |
| JP2018112032A (en) * | 2017-01-13 | 2018-07-19 | 北海道ガソン株式会社 | Construction method of double pipe type drilling rig and anchor gear |
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| SE531521C2 (en) * | 2007-09-07 | 2009-05-05 | Svenska Maskin Och Tryckluft I | Device for drilling in soil layers and rock |
| FI20086206A0 (en) * | 2008-12-17 | 2008-12-17 | Atlas Copco Rotex Ab Oy | Method and equipment for submersible drilling |
| FI20095046A0 (en) * | 2009-01-21 | 2009-01-21 | Atlas Copco Rotex Ab Oy | Method and device for submersible drilling |
| CN102155159B (en) * | 2010-12-01 | 2014-04-02 | 卢丹 | Hammer rotating mechanism |
| WO2013156667A1 (en) * | 2012-07-12 | 2013-10-24 | Oy Atlas Copco Rotex Ab | Method and apparatus for down-the-hole drilling |
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| MX2019009794A (en) | 2018-08-17 | 2020-02-18 | Ancor Loc Nz Ltd | Well or bore clearing tool. |
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2005
- 2005-06-10 EP EP05012538A patent/EP1731708B1/en active Active
- 2005-06-10 DE DE502005001190T patent/DE502005001190D1/en active Active
- 2005-06-10 AT AT05012538T patent/ATE369481T1/en active
-
2006
- 2006-06-07 EA EA200800001A patent/EA014437B1/en not_active IP Right Cessation
- 2006-06-07 EP EP06743121A patent/EP1907663B1/en active Active
- 2006-06-07 AU AU2006256971A patent/AU2006256971A1/en not_active Abandoned
- 2006-06-07 CN CNA2006800204977A patent/CN101203656A/en active Pending
- 2006-06-07 US US11/921,904 patent/US20090101413A1/en not_active Abandoned
- 2006-06-07 WO PCT/EP2006/005427 patent/WO2006131339A1/en active Application Filing
- 2006-06-07 AP AP2007004293A patent/AP2007004293A0/en unknown
- 2006-06-07 CA CA002654785A patent/CA2654785A1/en not_active Abandoned
- 2006-06-07 ZA ZA200800106A patent/ZA200800106B/en unknown
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| CN102990461A (en) * | 2011-09-08 | 2013-03-27 | Tmt-Bbg研究与开发有限公司 | Device for supplying flushing media to a hammer drill |
| CN102990461B (en) * | 2011-09-08 | 2015-08-05 | Tmt-Bbg研究与开发有限公司 | The device of irrigation is carried in hammer drill |
| CN104074471A (en) * | 2014-07-16 | 2014-10-01 | 徐州工程学院 | Rotating joint structure of ultra large diameter drilling machine |
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| CN104563951A (en) * | 2014-12-25 | 2015-04-29 | 贵州省交通规划勘察设计研究院股份有限公司 | Isolating device for impact holing drilled slurry |
| CN105041246A (en) * | 2015-02-26 | 2015-11-11 | 徐州徐工基础工程机械有限公司 | Direct-reverse circulation DTH hammer transfer structure |
| CN105041246B (en) * | 2015-02-26 | 2018-01-12 | 徐州徐工基础工程机械有限公司 | A kind of reverse circulation down-hole hammer transformational structure |
| CN105041220A (en) * | 2015-07-27 | 2015-11-11 | 王乐康 | Impact drill bit of full-hydraulic reverse circulation drilling machine |
| JP2018112032A (en) * | 2017-01-13 | 2018-07-19 | 北海道ガソン株式会社 | Construction method of double pipe type drilling rig and anchor gear |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090101413A1 (en) | 2009-04-23 |
| ATE369481T1 (en) | 2007-08-15 |
| AP2007004293A0 (en) | 2007-12-31 |
| EP1907663B1 (en) | 2013-02-20 |
| EP1731708B1 (en) | 2007-08-08 |
| EP1731708A1 (en) | 2006-12-13 |
| AU2006256971A1 (en) | 2006-12-14 |
| EA014437B1 (en) | 2010-12-30 |
| EP1907663A1 (en) | 2008-04-09 |
| ZA200800106B (en) | 2009-08-26 |
| DE502005001190D1 (en) | 2007-09-20 |
| WO2006131339A1 (en) | 2006-12-14 |
| CA2654785A1 (en) | 2006-12-14 |
| EA200800001A1 (en) | 2008-06-30 |
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