EP0088705A1 - Im Bohrloch angeordneter pneumatischer Schlagantrieb - Google Patents
Im Bohrloch angeordneter pneumatischer Schlagantrieb Download PDFInfo
- Publication number
- EP0088705A1 EP0088705A1 EP83400495A EP83400495A EP0088705A1 EP 0088705 A1 EP0088705 A1 EP 0088705A1 EP 83400495 A EP83400495 A EP 83400495A EP 83400495 A EP83400495 A EP 83400495A EP 0088705 A1 EP0088705 A1 EP 0088705A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- air
- hammer
- piston
- supply
- 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.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012073 inactive phase Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- 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
-
- 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
- E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
-
- 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 present invention relates to a pneumatic drilling hammer, and more particularly a hammer of the "down-the-hole” type, that is to say intended to work at the very bottom of the hole that is being drilled.
- Such devices are therefore placed at the end of a set of tubes which serve to transmit the compressed operating air to it as well as the thrust and the general rotational movement to regularize the action of the perforating cutter.
- Such pneumatic hammers intended to work at the bottom of the hole generally comprise a tubular body supplied with compressed air, a distribution mechanism, a striking piston, and a cutting edge receiving the impacts of the striking piston to transmit them to the rock.
- the striking piston is movable in a cylinder formed by an inner jacket, and between the jacket and the inner wall of the hammer body are provided longitudinal passages serving to bring the compressed air acting on the piston, other passages serving the exhaust of air after its action on either side of the striking piston.
- Such hammers When such hammers are provided for an independent supply of a cuttings flushing fluid, they comprise an axial connection piece to the piping for supplying the fluid through the drilling tubes, and an axial tube passing right through the whole assembly of the hammer, that is to say in particular the striking piston, to come out in an axial bore formed in the cutter.
- a pneumatic hammer has been described for example in the French patent published under number 2,044,939.
- the present invention allows a significant reduction in these costs, and in particular, with the same drilling efficiency, a significant reduction in energy consumption.
- the invention therefore relates to a pneumatic drilling hammer of the type "downhole", comprising a tubular body supplied with compressed air carrying a perforating cutter, and in which a striking piston is set in reciprocating motion in an inner sleeve forming a sheath by a mechanism for distributing compressed air alternately to - above and below the striking piston so that it cyclically strikes the cutting edge and goes up.
- the hammer comprises two separate supplies of compressed air, respectively at high and low pressure, the distribution mechanism alternately ensuring the supply of high pressure air to the upper chamber above the striking piston to project it towards the cutting with exhaust from the lower chamber, then the low-pressure air supply from the lower chamber to raise the piston with exhaust from the upper chamber.
- the supply of low pressure air to the lower chamber is provided by an internal axial chamber of the striking piston, while the supply of high pressure air to the upper chamber is provided by lights. crossing the sheath and longitudinal grooves formed externally in the thickness of the sheath.,
- Figure 1 is a general view in longitudinal section, in two parts, of a pneumatic hammer produced according to the invention.
- Figures 2 to 5 are partial views which show the successive positions of the striking piston during an operating cycle.
- the main body 1 of the hammer is screwed at its lower part onto a nozzle 2 in which slides the grooved tail of the perforating cutter 3.
- the tail of the cutter is stopped in rotation relative to the body, and limited in axial displacement by a tangential key 4 which bears on a clearance 5 of the tail.
- a cylindrical sheath 3 internally doubles the body 1 over almost its entire length.
- the sleeve 7 is supported on a spacer ring 8 of generally conical shape, pierced with radial orifices 9, and which itself is supported on the end piece 2.
- the other end of the sleeve 7 is in abutment on a ring 10 provided with radial conduits 11.
- the ring 10 is held by the end of the rac end cord 13 screwed onto the body 1.
- the end piece 13 receives the usual pieces of connection with the tubes and rods for supplying and operating the hammer.
- the part 15 which transmits the thrust on the hammer forms a first annular conduit 16 around a tube 17; a second annular conduit 18 is formed between the internal face of the tube 17 and a central tube 19.
- the sleeve 7 serves as a guide for the sliding striker piston 21 which can move freely between a low position as shown in Figure 1 where it is in contact with the end of the tail of the cutter, and a high position as will be seen later in the description of the operation of the device.
- the upper part of the striker 21 permanently encloses the lower part of the tube 17, the solid lower end 23 of which has channels 24 which make the annular duct 18 communicate with a central chamber 25 inside the striker 21.
- the chamber 25 is extended by two axial conduits 26 and 27, the latter opening at the bottom of the batter. Externally the striker 21 has a circular groove 28.
- the outer surface of the sleeve 7 has three series of longitudinal grooves; to simplify the drawing, only one groove of each type has been shown here.
- a first series of upper grooves 30 communicates the annular chamber 31 which surrounds the ring 10 with as many orifices 32 which open out inside the sheath.
- a second series of lower grooves 34 lead to the annular chamber 35 surrounding the lower ring 8; the orifices 36 and 37 pass through the wall of the sheath 7 and open into these grooves 34.
- a third series of grooves 39 connects the orifices 40 and 41 which also pass through the wall of the sheath 7.
- the chamber 35 communicates with the outside of the hammer by the conduits 9, by the games between the grooves of the cutting edge and the conjugate grooves of the end piece 2, and by the chamber 47 which communicates to the outside via the exhaust pipes 48.
- the central tube 19 is used for the supply of water used to drive the cuttings down the hole.
- the tube 19 is extended at the bottom until it enters the tail of the cutter which has a conjugate central channel 43.
- the penetration of the tube into the tail of the cutter is determined so that the tube remains engaged whatever the position. of the cutting edge in its axial displacement.
- the central channel 43 is extended by a channel 44 which opens out through orifices 45 at the periphery of the cutting edge to chase the spoils.
- the outer annular duct 16 is supplied with compressed air at high pressure, for example under 20 to 25 bars.
- the inner annular duct 18 is supplied with compressed air at low pressure, for example at 6 bars.
- FIG. 2 the striking piston 21 is shown in the low position, just after its impact on the tail of the cutter.
- the high pressure air fills the conduit 16, the intermediate chamber 49, the conduits 11, the annular chamber 31, the grooves 30 and the orifices 32; but these, inside the sheath, are closed by the striker 21 and the high pressure air remains trapped in the grooves 30.
- the low pressure air which arrives via the conduit 18 passes through the conduits 24 in the chamber 25, and from there via the conduits 26 and 27 fills the lower chamber 50 under the striker 21.
- the pressure in the lower chamber 50 causes the striker 21 to rise without any reaction other than its own weight because the upper chamber 51 then communicates freely with the exhaust outside the hammer through the orifices 36, the grooves 34 and the chamber 35.
- the striker 21 first closes the high pressure supply to the chamber 51, then puts the latter in the exhaust by uncovering the orifices 36. A little before the impact on the end of the tail of the cutting edge the exhaust of the chamber 50 is closed by closing the orifices 37, then the low pressure air is again brought into the chamber 50 by opening the orifices 24 on the chamber 25, and the cycle can start again.
- both the high pressure air after action in the upper chamber 51 and the low pressure air after working in the lower chamber 50 are found mixed in the chamber 35, then at the outlet of the hammer in conduits 48.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Jib Cranes (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83400495T ATE16954T1 (de) | 1982-03-11 | 1983-03-11 | Im bohrloch angeordneter pneumatischer schlagantrieb. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8204077 | 1982-03-11 | ||
FR8204077A FR2523202A1 (fr) | 1982-03-11 | 1982-03-11 | Marteau a entrainement pneumatique du type " fond-de-trou " |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0088705A1 true EP0088705A1 (de) | 1983-09-14 |
EP0088705B1 EP0088705B1 (de) | 1985-12-11 |
Family
ID=9271855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83400495A Expired EP0088705B1 (de) | 1982-03-11 | 1983-03-11 | Im Bohrloch angeordneter pneumatischer Schlagantrieb |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0088705B1 (de) |
AT (1) | ATE16954T1 (de) |
DE (1) | DE3361460D1 (de) |
FR (1) | FR2523202A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5662180A (en) * | 1995-10-17 | 1997-09-02 | Dresser-Rand Company | Percussion drill assembly |
US5957220A (en) * | 1995-10-17 | 1999-09-28 | Dresser-Rand Company | Percussion drill assembly |
US7040417B2 (en) | 2003-12-11 | 2006-05-09 | Cct Technologies, L.L.C. | Drilling systems |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106320983B (zh) * | 2016-11-08 | 2018-12-18 | 贵州高峰石油机械股份有限公司 | 一种超深水随钻下套管的方法及装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2044939A5 (de) * | 1969-05-23 | 1971-02-26 | Stenuick Freres | |
FR2340444A1 (fr) * | 1976-02-09 | 1977-09-02 | Reed Tool Co | Outil de forage par percussion muni d'une soupape a clapet |
FR2371573A1 (fr) * | 1976-11-20 | 1978-06-16 | Miralles Valle Charles | Marteau piqueur |
FR2375434A1 (fr) * | 1976-07-01 | 1978-07-21 | Lister William | Marteau pneumatique a percussion pour le forage des roches |
FR2424408A1 (fr) * | 1978-04-24 | 1979-11-23 | Stenuick Freres | Taillant de perforation pour marteau pneumatique fond-de-trou |
EP0022865A1 (de) * | 1978-12-15 | 1981-01-28 | Furukawakogyo Co.Ltd | Hydraulisch angetriebene bohrvorrichtung im bohrloch |
-
1982
- 1982-03-11 FR FR8204077A patent/FR2523202A1/fr active Granted
-
1983
- 1983-03-11 DE DE8383400495T patent/DE3361460D1/de not_active Expired
- 1983-03-11 EP EP83400495A patent/EP0088705B1/de not_active Expired
- 1983-03-11 AT AT83400495T patent/ATE16954T1/de not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2044939A5 (de) * | 1969-05-23 | 1971-02-26 | Stenuick Freres | |
FR2340444A1 (fr) * | 1976-02-09 | 1977-09-02 | Reed Tool Co | Outil de forage par percussion muni d'une soupape a clapet |
FR2375434A1 (fr) * | 1976-07-01 | 1978-07-21 | Lister William | Marteau pneumatique a percussion pour le forage des roches |
FR2371573A1 (fr) * | 1976-11-20 | 1978-06-16 | Miralles Valle Charles | Marteau piqueur |
FR2424408A1 (fr) * | 1978-04-24 | 1979-11-23 | Stenuick Freres | Taillant de perforation pour marteau pneumatique fond-de-trou |
EP0022865A1 (de) * | 1978-12-15 | 1981-01-28 | Furukawakogyo Co.Ltd | Hydraulisch angetriebene bohrvorrichtung im bohrloch |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5662180A (en) * | 1995-10-17 | 1997-09-02 | Dresser-Rand Company | Percussion drill assembly |
US5957220A (en) * | 1995-10-17 | 1999-09-28 | Dresser-Rand Company | Percussion drill assembly |
US7040417B2 (en) | 2003-12-11 | 2006-05-09 | Cct Technologies, L.L.C. | Drilling systems |
Also Published As
Publication number | Publication date |
---|---|
EP0088705B1 (de) | 1985-12-11 |
ATE16954T1 (de) | 1985-12-15 |
FR2523202A1 (fr) | 1983-09-16 |
FR2523202B1 (de) | 1984-04-13 |
DE3361460D1 (en) | 1986-01-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0096639B1 (de) | Schlaghammer | |
FR2461804A1 (fr) | Outil de forage pour appareil a percussion | |
CA1061679A (fr) | Appareil a percussions hydraulique | |
FR2647870A1 (fr) | Appareil de percussion hydraulique avec dispositif d'amortissement des ondes de choc en retour | |
FR2463255A1 (fr) | Perforatrice de roche a percussion actionnee par fluide | |
FR2458668A1 (fr) | Marteau perforateur de rocher a commande fluidique | |
EP0883731B1 (de) | Kernbohrwerkzeug | |
CH617117A5 (de) | ||
EP0088705B1 (de) | Im Bohrloch angeordneter pneumatischer Schlagantrieb | |
EP0005384B1 (de) | Tiefloch-Pressluftbohrhammer mit Bohrmeissel | |
EP1492648B2 (de) | Hydraulischer drehender schlagbohrhammer | |
FR2472660A1 (fr) | Perforatrice de rocher a percussion et a liquide sous pression combinee | |
FR2477960A1 (fr) | Mecanisme de presse hydraulique a course rapide puis lente | |
CA1205353A (fr) | Appareil a percussion mu par un fluide sous pression | |
CA1120028A (fr) | Dispositif inverseur du sens de circulation d'un fluide au niveau d'un outil de forage | |
CA2808992C (fr) | Appareil rotopercutant hydraulique destine a la perforation de trous de mine | |
FR2855542A1 (fr) | Procede de surblocage d'au moins un toron dans un bloc d'ancrage et systeme de surblocage d'au moins un toron dans un bloc d'ancrage | |
EP1299213B1 (de) | Hydraulisches schlaggerät | |
FR2596681A1 (fr) | Appareil de percussion hydraulique avec dispositif d'amortissement des ondes de choc en retour | |
FR2459356A1 (fr) | Dispositif de forage pour un forage etage | |
FR2523203A1 (fr) | Dispositif pneumatique a action percussive impulsionnelle | |
FR2656044A1 (fr) | Appareil de percussion hydraulique. | |
FR2526078A1 (fr) | Dispositif de forage rotatif a percussion | |
BE559431A (de) | ||
WO2007147979A1 (fr) | Appareil rotopercutant hydraulique du type perforatrice |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19830602 |
|
18D | Application deemed to be withdrawn |
Effective date: 19840613 |
|
D18D | Application deemed to be withdrawn (deleted) | ||
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
REF | Corresponds to: |
Ref document number: 16954 Country of ref document: AT Date of ref document: 19851215 Kind code of ref document: T |
|
ITF | It: translation for a ep patent filed |
Owner name: JACOBACCI & PERANI S.P.A. |
|
REF | Corresponds to: |
Ref document number: 3361460 Country of ref document: DE Date of ref document: 19860123 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19860331 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 19860404 Year of fee payment: 4 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19870226 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19870331 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19880311 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19880312 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19880331 Ref country code: CH Effective date: 19880331 |
|
BERE | Be: lapsed |
Owner name: STENUICK FRERES S.A. Effective date: 19880331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19881001 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19881122 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19881130 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19881201 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19890331 |
|
EUG | Se: european patent has lapsed |
Ref document number: 83400495.4 Effective date: 19881206 |