EP0851091A2 - Marteau dans le trou - Google Patents

Marteau dans le trou Download PDF

Info

Publication number
EP0851091A2
EP0851091A2 EP97119555A EP97119555A EP0851091A2 EP 0851091 A2 EP0851091 A2 EP 0851091A2 EP 97119555 A EP97119555 A EP 97119555A EP 97119555 A EP97119555 A EP 97119555A EP 0851091 A2 EP0851091 A2 EP 0851091A2
Authority
EP
European Patent Office
Prior art keywords
housing
downhole hammer
hammer according
percussion piston
piston
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.)
Withdrawn
Application number
EP97119555A
Other languages
German (de)
English (en)
Other versions
EP0851091A3 (fr
Inventor
Dietmar Dipl.-Wi.-Ing. Jenne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terra AG fuer Tiefbautechnik
Original Assignee
Terra AG fuer Tiefbautechnik
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Terra AG fuer Tiefbautechnik filed Critical Terra AG fuer Tiefbautechnik
Publication of EP0851091A2 publication Critical patent/EP0851091A2/fr
Publication of EP0851091A3 publication Critical patent/EP0851091A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers

Definitions

  • the invention relates to a downhole hammer, comprising an im essentially cylindrical housing, one in a piston chamber the housing axially reciprocating pressure fluid operated Percussion piston, an interchangeably arranged working head, to which the impact energy of the percussion piston can be transferred is, and a connecting piece rotatably connected to the housing for the non-rotatable connection of the down hole hammer with a drill pipe and for connecting a pressure medium line.
  • Hole hammers are generally used to drill holes in gravelly and stony soils, but especially in rock perform.
  • the downhole hammer is placed over the drill pipe kept under tension from behind and continuous turned.
  • the pressure medium generally compressed air, penetrates from behind into the downhole hammer and moves the percussion piston inside.
  • the percussion piston hits the working head, for example a drill bit that is not rigidly connected to the case but with a longitudinal toothing Shaft non-rotatably but longitudinally displaceable in the housing is led.
  • This longitudinal toothing must be relatively long, so the high torques with dynamic at the same time Impact can be transmitted permanently.
  • conventional ones Downhole hammers are relatively long because of their longitudinal flexibility between the housing and the drill bit got to.
  • the drill bit itself is relative because of its length heavy and expensive. Because the drill bit is a wearing part and must be replaced frequently, this leads to relatively high running costs for the operation of the Imloch hammer.
  • the invention has for its object a relatively short specify compact downhole hammer, where the cost of the working head can be lowered.
  • the solution according to the invention enables the working head short and relatively easy to train. Because the previously required Shank on the drill bit is omitted, the drill bit not only cheaper, but it also shortens the whole Length of the downhole hammer by at least a part of the Length of the shaft previously required because of the percussion piston now not on the rear end of the shaft but on the front wall the piston chamber strikes.
  • a short downhole hammer is This is particularly advantageous if there are cramped press pits or even from existing sewer pipes, which are usually have a diameter of 1200 to 1600 mm should be, for example, across the sewer pipe to lay a house connection.
  • this is preferably screwed onto a threaded extension of the housing.
  • this screw connection which is combined by the Impact rotation during the operation of the downhole hammer is extremely tight, also loosen again to be able to, it is useful to be between the working head and to arrange a separating ring for the housing. This is at Loosening the screw connection destroyed by grinding, see above that then the working head of the thread extension again can be unscrewed.
  • the outlet opening can at least a drain channel on the in the feed direction of the downhole hammer facing front of the working head be.
  • at least an end channel has its outlet opening on a side or rear surface of the working head.
  • the working head can either, as mentioned above, a drill bit provided with hard metal elements or a Be a ramming head, which is used to ram pipes and one conical surface for coupling with a pipe or with Rammringen has, which can be used in larger diameter pipes are.
  • the drill bit is usually with a Axis normal face on which the Tungsten carbide elements are arranged.
  • the drill head with a control surface be provided, which is the substantially axially normal end face cuts at an angle other than 90 ° and as well as the end face with hard metal elements is.
  • the hammer mechanism of the downhole hammer is preferably designed that the percussion piston is a backward open first Has a hole in which a first head tube engages is rigidly connected to the housing, coaxial to this inside the piston chamber with a radial distance from its inner wall is arranged and in turn an axial pressure medium inflow channel has that the percussion piston further one after has a second bore open at the front, into which a second head tube engages, which is rigidly connected to the housing, coaxially to this within the piston chamber with a radial distance is arranged from the inner wall and an axial Has pressure medium drainage channel, and that in the respective the first or the wall section surrounding the second percussion piston bore at least one control opening is formed, which in cooperation with the free end of the respective head tube the pressure medium inflow to the pressure medium outflow from the space between the front end of the percussion piston and controls the impact surface.
  • a closed gas-filled annular space is provided, in which the percussion piston with its surrounding the first head tube Wall section is guided. That contained in the annulus Gas, usually air, is released when the percussion piston returns compresses and dampens the backward movement of the percussion piston.
  • the annulus serves as a pressure accumulator, by doing this by reversing the percussion piston compressed gas the subsequent forward movement of the Percussion piston supported. This leads to a significant increase the impact energy and to a richer impact of the Percussion piston on the front impact surface.
  • the impact energy in the downhole hammer according to the invention would be transferred to the entire hammer housing, it would at a rigid connection of the housing to the drill pipe also transferred to the linkage. This would create the risk that the linkage breaks.
  • it has Connector in the solution according to the invention with a Drill pipe and the pressure medium inflow line connectable Coupling section and a guide section with which the Connector in the housing between two end positions is guided axially displaceably, with a in the housing Guide section surrounding part of its length Annular space is formed, which in the axial direction by a with the housing firmly connected sealing ring on the one hand and by a sealing ring which is firmly connected to the guide section on the other hand is complete and the radial Bore in the guide section with a connector penetrating pressure medium channel is connected.
  • the downhole hammer shown in Figures 1 and 2 includes a cylindrical tubular housing 10 which at its in Figures 1 and 2 left front end except for an axial Bore 12 is closed and in one with an external thread 14 provided approach 16 expires. At its in FIGS and 2 right rear end is the tubular housing 10 closed by a bottom part 18, which with a threaded approach 20 in the internally threaded rear End of the housing 10 is screwed.
  • the housing 10 surrounds a piston chamber 22 in which a general with 24 designated percussion piston axially displaceable is.
  • the percussion piston 24 has a first bore which is open to the rear 26, in the one with the bottom part 18 integral head tube 28 engages that coaxially to the housing 10 in the Piston chamber 22 and with a radial distance from the housing inner wall 30 extends. Bottom part and head tube can can of course also be produced as separate parts.
  • the percussion piston also has one at its front end axially open second bore 32 into which a front Control tube 34 engages that in the bore 12 of the housing 10 is used and with a radial distance from the Inner wall 30 of the housing 10 coaxial with this in the piston chamber 22 extends into it.
  • control openings 40 and 42 are formed, which the respective Bore interior with the space outside the percussion piston 24, i.e. connect the piston chamber 22.
  • connection of the downhole hammer described so far with A drill pipe, not shown, is made via a general with 54 designated connector.
  • This consists of a coupling section 56 and a guide section 58, which is inserted coaxially to the housing 10 in the bottom part 18 is.
  • a cylindrical end portion 60 of the guide portion 58 engages in the inner bore of the head tube 28.
  • On this end section 60 closes to form the coupling section 56 a hexagon on its outside Section 62, which in one in the approach 20 of the bottom part 18 designed complementary recess 64 with hexagonal Cross section is used so that the connector 54 is rotatably with the bottom part 18 and thus also the housing 10.
  • a guide section 58 of the connecting piece 54 surrounding annular chamber 66 In the end section adjoining approach 20 on the right of the bottom part 18 is a guide section 58 of the connecting piece 54 surrounding annular chamber 66, the outside of one rigidly connected to the bottom part 18 Sealing ring 68 is completed on a cylindrical Ring surface 70 of the connector 54 slide can. On one of the hex section 62 of the guide section 58 adjoining annular surface 72 of the connector 54 sits another sealing ring 74, which is tight is connected to the connector 54 and on the inside 76 of the section of the base part delimiting the annular space 66 18 can slide.
  • the annular space 66 is above one in the Bottom part 18 formed radial bore 78 with the ambient air and via one in the guide section 58 of the connector 54 formed radial bore 80 with a Channel 82 in connection, which the entire connector 54th interspersed in the axial direction.
  • the part of the channel running in the coupling section 56 82 has a polygonal cross section and is used for recording a complementary pin on the drill pipe around the down hole hammer non-rotatably connected to the drill pipe.
  • a Ramp surface 84 at the insertion end of the coupling section 56 serves a spring pin on the coupling pin push the drill pipe radially inwards until the coupling pin inserted so far into the coupling section 56 is that this bolt in a radial bore 86 in the Coupling section 56 can engage, so that the coupling pin no longer automatically from the receptacle of the coupling section 56 can slide out.
  • This movement of the percussion piston to the left is controlled by the Air pressure supported in the hermetically sealed Annulus 52 is located and by the movement of the Percussion piston 24 was compressed to the right.
  • the air filling in the annular space 52 thus acts as an elastic one Air cushion that the backward movement of the percussion piston 24th dampens to the right and at the same time acts as a pressure accumulator, which drives the percussion piston 24 to the left again.
  • Figures 3 and 4 show a first embodiment of a Drill head or a drill bit 88 on the thread extension 16 is screwed on. As can be seen in Figure 3, becomes a separating ring 90 between the drill bit when screwing on 88 and the housing 10 clamped. When operating the downhole hammer the screw connection between the drill bit 88 and the housing 10 so tight that the could not detach the drill bit from the housing 10. Before the Unscrewing the drill bit, the separating ring 90 is destroyed, for example, ground, then the drill bit 88 without Effort can be unscrewed from the threaded extension 16.
  • the drill bit an axially normal end face 92 and one intersecting it Control surface 94, both surfaces with hard metal elements 96 are busy.
  • the control surface 94 does not affect the drilling direction.
  • FIG. 7 shows an in-hole hammer with a drill bit 102 which in contrast to the embodiment shown in Figures 3 and 5 only an axially normal face and no control surface Has.
  • the hammer itself is in the center tube 106 generally used with 104 designated screw conveyor and coupled to a drill pipe 108, which in turn is also surrounded by a spiral and together with this forms a screw conveyor 110 which, like the screw conveyor 104 abuts the inner wall of a tube 112, which lines the created hole.
  • the screw conveyors 104 and 110 are used to reverse the cuttings to promote.
  • FIG. 8 finally shows an in-hole hammer according to the invention, as it was described with reference to Figures 1 and 2, the not with a drill bit, but with a ram head 114 is.
  • This has a conical surface 116 with which into the end of a pipe to be driven in or into ramming rings can be inserted, which in turn is suitable in pipes Diameter are introduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP97119555A 1996-12-17 1997-11-07 Marteau dans le trou Withdrawn EP0851091A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19652530A DE19652530C2 (de) 1996-12-17 1996-12-17 Imlochhammer
DE19652530 1996-12-17

Publications (2)

Publication Number Publication Date
EP0851091A2 true EP0851091A2 (fr) 1998-07-01
EP0851091A3 EP0851091A3 (fr) 1999-05-06

Family

ID=7815038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119555A Withdrawn EP0851091A3 (fr) 1996-12-17 1997-11-07 Marteau dans le trou

Country Status (3)

Country Link
US (1) US6050347A (fr)
EP (1) EP0851091A3 (fr)
DE (1) DE19652530C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1138870A1 (fr) * 2000-03-27 2001-10-04 Bernard Lionel Gien Ensemble de marteaux de forage
DE102020103596A1 (de) 2020-02-12 2021-08-12 TERRA AG für Tiefbautechnik Vorrichtung zum Erzeugen einer Erdbohrung

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19804919C2 (de) * 1998-02-07 2002-08-29 Tracto Technik Rammbohrgerät
US6675909B1 (en) 2002-12-26 2004-01-13 Jack A. Milam Hydraulic jar
CA2506840A1 (fr) * 2004-05-17 2005-11-17 Bernard Lionel Gien Marteau pneumatique
WO2006062309A1 (fr) * 2004-12-07 2006-06-15 Byung-Duk Lim Marteau perforateur et procede d'entrainement associe
JP4721923B2 (ja) * 2005-07-13 2011-07-13 日東工器株式会社 空気圧式駆動工具
US8230912B1 (en) 2009-11-13 2012-07-31 Thru Tubing Solutions, Inc. Hydraulic bidirectional jar
US8550155B2 (en) 2011-03-10 2013-10-08 Thru Tubing Solutions, Inc. Jarring method and apparatus using fluid pressure to reset jar
US8657007B1 (en) 2012-08-14 2014-02-25 Thru Tubing Solutions, Inc. Hydraulic jar with low reset force
DE102015008339A1 (de) * 2015-07-01 2017-01-05 Tracto-Technik Gmbh & Co. Kg "Rammbohrvorrichtung und Verfahren zum Umsteuern einer Rammbohrvorrichtung"
DE102017005767B4 (de) * 2017-06-20 2019-04-25 Tracto-Technik Gmbh & Co. Kg Erdbohrvorrichtung, Verfahren zu dessen Herstellung und Verwenden eines Fügeprozesses

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403739A (en) * 1966-11-01 1968-10-01 Bowen Tools Inc Fluid-actuated impact tool
US4079793A (en) * 1976-10-05 1978-03-21 Reed Tool Co. Exhaust means for percussion tools
DE2655541A1 (de) * 1976-12-08 1978-06-22 Trader Strahm Ag Verfahren und anordnung fuer das vertikale einrammen von rohren
US5322134A (en) * 1990-05-25 1994-06-21 Ksk Guided Microtunneling Technologies Gmbh Spezialtiefbaugerate Drill head

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810549A (en) * 1953-01-16 1957-10-22 Ingersoll Rand Co Fluid actuated percussive tool
US3998280A (en) * 1973-09-04 1976-12-21 Schlumberger Technology Corporation Wave motion compensating and drill string drive apparatus
AU608441B2 (en) * 1988-06-15 1991-03-28 Abraham Gien Down the hole hammer equipment
WO1990003488A1 (fr) * 1988-09-22 1990-04-05 William Lister Ameliorations apportees a des marteaux a percussion pneumatiques
DE3909567A1 (de) * 1989-03-23 1990-09-27 Schmidt Paul Rammbohrgeraet
US5226487A (en) * 1990-02-07 1993-07-13 Mbs Advanced Engineering Systems Pneumopercussive machine
US5117922A (en) * 1990-06-20 1992-06-02 Allied Steel & Tractor Products, Inc. Isolator assembly for a pneumatic underground piercing tool
DE4143418C2 (de) * 1991-10-23 1995-03-16 Klemm Bohrtech Drucklufthammer mit veränderbarer Rückhublänge des Arbeitskolbens
US5325926A (en) * 1993-02-05 1994-07-05 Ingersoll-Rand Company Reversible casing for a down-the-hole percussive apparatus
NO301727B1 (no) * 1993-02-10 1997-12-01 Gefro Oilfield Services As Dobbeltvirkende hydraulisk slagverktöy
US5337837A (en) * 1993-06-17 1994-08-16 Earth Tool Corporation Dual-diameter pneumatic ground piercing tool
US5494116A (en) * 1994-02-04 1996-02-27 Earth Tool Corporation Pneumatic impact tool for pipe insertion
DE4433533C1 (de) * 1994-09-20 1995-11-23 Terra Ag Tiefbautechnik Rammbohrvorrichtung
US5505270A (en) * 1994-10-19 1996-04-09 Earth Tool L.L.C. Reversible pneumatic ground piercing tool
US5662180A (en) * 1995-10-17 1997-09-02 Dresser-Rand Company Percussion drill assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403739A (en) * 1966-11-01 1968-10-01 Bowen Tools Inc Fluid-actuated impact tool
US4079793A (en) * 1976-10-05 1978-03-21 Reed Tool Co. Exhaust means for percussion tools
DE2655541A1 (de) * 1976-12-08 1978-06-22 Trader Strahm Ag Verfahren und anordnung fuer das vertikale einrammen von rohren
US5322134A (en) * 1990-05-25 1994-06-21 Ksk Guided Microtunneling Technologies Gmbh Spezialtiefbaugerate Drill head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1138870A1 (fr) * 2000-03-27 2001-10-04 Bernard Lionel Gien Ensemble de marteaux de forage
DE102020103596A1 (de) 2020-02-12 2021-08-12 TERRA AG für Tiefbautechnik Vorrichtung zum Erzeugen einer Erdbohrung
EP3865655A1 (fr) 2020-02-12 2021-08-18 TERRA AG fuer Tiefbautechnik Dispositif de production d'un trou de forage

Also Published As

Publication number Publication date
DE19652530C2 (de) 1998-12-03
US6050347A (en) 2000-04-18
EP0851091A3 (fr) 1999-05-06
DE19652530A1 (de) 1998-06-18

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