EP2165039A1 - A device for drilling in earth-layers and rock - Google Patents

A device for drilling in earth-layers and rock

Info

Publication number
EP2165039A1
EP2165039A1 EP08767039A EP08767039A EP2165039A1 EP 2165039 A1 EP2165039 A1 EP 2165039A1 EP 08767039 A EP08767039 A EP 08767039A EP 08767039 A EP08767039 A EP 08767039A EP 2165039 A1 EP2165039 A1 EP 2165039A1
Authority
EP
European Patent Office
Prior art keywords
casing pipe
bore
guide
shoulder
crown
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
Application number
EP08767039A
Other languages
German (de)
French (fr)
Other versions
EP2165039B1 (en
EP2165039A4 (en
EP2165039B8 (en
Inventor
Östen EDMAN
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.)
Epiroc Drilling Tools AB
Original Assignee
Atlas Copco Secoroc AB
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 Atlas Copco Secoroc AB filed Critical Atlas Copco Secoroc AB
Publication of EP2165039A1 publication Critical patent/EP2165039A1/en
Publication of EP2165039A4 publication Critical patent/EP2165039A4/en
Publication of EP2165039B1 publication Critical patent/EP2165039B1/en
Application granted granted Critical
Publication of EP2165039B8 publication Critical patent/EP2165039B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives
    • 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
    • E21B10/40—Percussion drill bits with leading portion
    • 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
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/14—Casing shoes for the protection of the bottom of the casing

Definitions

  • the present invention refers to a device for performing of a drilling in earth-layers and rocks at the same time as a casing pipe is forced downwards into the ground, so that strokes from a countersink hammer via a bore crown or a guide belonging to a bore crown is acting against a shoulder situated at the lower most portion of the casing pipe in driving downwards of the casing pipe into the bore hole made together with the bore crown used.
  • Bore devices of today are usually built up around a countersink hammer and is used for instance for drilling of a well, said drilling tool comprising a pilot crown having a reamer bit provided, so that it can be throw outwards eccentrically in relation to the pilot crown and make the bore being drilled larger.
  • the bore hole made can get the dimension enough in order to besides the bore crown in a swung in position has place for a casing pipe, which has been moved downwards into the bore hole at the same time as the hole is being made.
  • the casing pipe is driven downwards into the hole together with the bore crown by that the strokes of a counter sink hammer via the bore crown or a guide is acting against a shoulder situated at the lower most portion of the casing pipe.
  • the casing pipes usually consist of three meter's lengths of steel or plastic which are welded or screwed together as the casing pips are driven downwards into the bore hole.
  • One drawback using this technique is that during the end of the drilling and the removing of the bore head out from the bore hole, valuable material must be left in the hole, which is anchored in different ways at the end portion of the casing pipe and which is necessary for carrying out the drilling and the driving downwards of the casing pipe into the bore hole.
  • One object of the present invention is to eliminate those drawbacks present of known bore devices of the type mentioned above by providing a new type of device for drilling in earth-layers and rocks.
  • the characterizing features of the present invention are set forth in the claims enclosed.
  • the shoulder which is situated at the lower portion of the casing pipe, formed by a wearing ring of steel or plastic resting against an edge portion within the inner mantle surface of the casing pipe, which directly or indirectly cooperates against a shoulder surface facing in a direction to the free end portion of the casing pipe, said shoulder surface is located on the guide belonging to the casing pipe and also a boring string rotary connected to a boring machine.
  • a shoulder provided protecting ring can further be used in the free end portion of the casing pipe in preventing of penetrating of gravel and sand between the bore crown and the casing pipe and the shoulders of which are located on the protecting ring so that the wearing ring indirectly cooperates against the shoulder surface of the bore crown or the guide.
  • Fig. 1 shows a schematic cross section view of a previously known embodiment form of a bore crown with belonging parts in connection with the lowermost free end portion of a casing pipe
  • Fig. 2 shows a schematic cross section view like the one illustrated in Fig. 1 but formed according to the present invention
  • Fig. 3 shows a cross section view of a wearing ring formed according to the present invention
  • Fig. 4 shows a cross section view of a protecting ring which can be used in preventing penetrating of gravel and sand between the bore crown and the casing pipe.
  • the same consists of a device illustrated in Fig. 2 comprising a bore or pilot crown I 9 a reamer crown 2 and a guide 3 of a counter sink hammer not illustrated in the drawing and a portion of a boring string 4.
  • the crowns 1 and 2 and the guide 3 are rotated via the boring string 4 in a way known and are influenced axially by the counter sink hammer.
  • a casing pipe 5 of preferably a plastic material as e.g. PEH-plastic, according to the invention, is provided with a shoulder 6 in its lower most portion 7, which is constituted by a wearing ring 10 of a steel or plastic material, resting against an edge portion 8 within the inner mantle surface 9 of the casing pipe 5.
  • the guide 3 in this embodiment example has a downwardly directed shoulder surface 11 located on a expanded portion 12 and which transfers the strokes of the counter sink hammer against the wearing ring 10 and its shoulder 6 either directly via a protecting ring 13 illustrated in Fig. 2, which prevents penetrating of gravel and sand between the bore crown and casing pipe.
  • the protecting ring 13 also has a first or second shoulder surface 14 and 15 for transferring strokes from the counter sink hammer indirectly against the wearing ring 10 from the shoulder surface 11 of the guide 3.
  • the casing pipe 5 is drawn downwards by the strokes directed against the guide 3 and from this they are directly transferred to the shoulder 6 of the wearing ring 10 or indirect via the shoulder surfaces 14 and 15 of the protecting ring 13.
  • FIG. 1 an embodiment example of a known formation of the parts of a bore crown of an equipment for a simultaneous drilling and lining of a bore hole is illustrated in a cross section view, in said example a casing pipe 5 'of steel is used, which in its lower most free end portion T has a sleeve formation 10' of steel, which is welded to the casing pipe 5' in order to constitute in the same time a shoulder 6' directed upwards for transferring of strokes driven downwards from a counter sink hammer via a shoulder surface 11' on the guide 3'.
  • a cross section view of the wearing ring 10 is illustrated, as it is formed according to the invention and in Fig. 4 a cross section view of the protecting ring 13 is illustrated, as it is formed according to the present invention.

Landscapes

  • 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 refers to a device for carrying out drilling in earth-layers and rocks during a simultaneous forcing downwards of a casing pipe (5) into the ground, whereby strokes from a countersink hammer via a bore crown or a guide (3) belonging to a bore crown (1) is provided to cooperate against a shoulder (6) situated at the lower most portion (7) of the casing pipe (5) in driving downwards of the casing pipe (5) into the bore hole made together with the bore crown (1) used. Said shoulder (6) is formed by a wearing ring (10) placed into position against an edge portion (8) within the inner mantle surface (9) of the casing pipe (5) for a direct or indirect cooperation against a shoulder surface (11) faced in a direction to the free end portion (7) of the casing pipe (5) and which is situated on the bore crown (1) or the guide (3) belonging to the bore crown (1) and also to a boring string (4) rotary connected to a drilling machine.

Description

A device for drilling in earth-layers and rock
The present invention refers to a device for performing of a drilling in earth-layers and rocks at the same time as a casing pipe is forced downwards into the ground, so that strokes from a countersink hammer via a bore crown or a guide belonging to a bore crown is acting against a shoulder situated at the lower most portion of the casing pipe in driving downwards of the casing pipe into the bore hole made together with the bore crown used.
Bore devices of today are usually built up around a countersink hammer and is used for instance for drilling of a well, said drilling tool comprising a pilot crown having a reamer bit provided, so that it can be throw outwards eccentrically in relation to the pilot crown and make the bore being drilled larger. In this case the bore hole made can get the dimension enough in order to besides the bore crown in a swung in position has place for a casing pipe, which has been moved downwards into the bore hole at the same time as the hole is being made. The casing pipe is driven downwards into the hole together with the bore crown by that the strokes of a counter sink hammer via the bore crown or a guide is acting against a shoulder situated at the lower most portion of the casing pipe. The casing pipes usually consist of three meter's lengths of steel or plastic which are welded or screwed together as the casing pips are driven downwards into the bore hole. One drawback using this technique is that during the end of the drilling and the removing of the bore head out from the bore hole, valuable material must be left in the hole, which is anchored in different ways at the end portion of the casing pipe and which is necessary for carrying out the drilling and the driving downwards of the casing pipe into the bore hole.
One object of the present invention is to eliminate those drawbacks present of known bore devices of the type mentioned above by providing a new type of device for drilling in earth-layers and rocks. The characterizing features of the present invention are set forth in the claims enclosed.
Thanks to the invention a device has now been provided, which in an excellent way fulfils its purpose at the same time as it furthermore is both cheap and easy to manufacture. According to the invention the shoulder, which is situated at the lower portion of the casing pipe, formed by a wearing ring of steel or plastic resting against an edge portion within the inner mantle surface of the casing pipe, which directly or indirectly cooperates against a shoulder surface facing in a direction to the free end portion of the casing pipe, said shoulder surface is located on the guide belonging to the casing pipe and also a boring string rotary connected to a boring machine. A shoulder provided protecting ring can further be used in the free end portion of the casing pipe in preventing of penetrating of gravel and sand between the bore crown and the casing pipe and the shoulders of which are located on the protecting ring so that the wearing ring indirectly cooperates against the shoulder surface of the bore crown or the guide.
The invention is described closer below with help of a preferred embodiment example with reference to the accompanying drawings, in which
Fig. 1 shows a schematic cross section view of a previously known embodiment form of a bore crown with belonging parts in connection with the lowermost free end portion of a casing pipe,
Fig. 2 shows a schematic cross section view like the one illustrated in Fig. 1 but formed according to the present invention,
Fig. 3 shows a cross section view of a wearing ring formed according to the present invention, and
Fig. 4 shows a cross section view of a protecting ring which can be used in preventing penetrating of gravel and sand between the bore crown and the casing pipe.
According to a preferred embodiment example of the invention the same consists of a device illustrated in Fig. 2 comprising a bore or pilot crown I9 a reamer crown 2 and a guide 3 of a counter sink hammer not illustrated in the drawing and a portion of a boring string 4. The crowns 1 and 2 and the guide 3 are rotated via the boring string 4 in a way known and are influenced axially by the counter sink hammer. A casing pipe 5 of preferably a plastic material as e.g. PEH-plastic, according to the invention, is provided with a shoulder 6 in its lower most portion 7, which is constituted by a wearing ring 10 of a steel or plastic material, resting against an edge portion 8 within the inner mantle surface 9 of the casing pipe 5. The guide 3 in this embodiment example has a downwardly directed shoulder surface 11 located on a expanded portion 12 and which transfers the strokes of the counter sink hammer against the wearing ring 10 and its shoulder 6 either directly via a protecting ring 13 illustrated in Fig. 2, which prevents penetrating of gravel and sand between the bore crown and casing pipe. The protecting ring 13 also has a first or second shoulder surface 14 and 15 for transferring strokes from the counter sink hammer indirectly against the wearing ring 10 from the shoulder surface 11 of the guide 3. The casing pipe 5 is drawn downwards by the strokes directed against the guide 3 and from this they are directly transferred to the shoulder 6 of the wearing ring 10 or indirect via the shoulder surfaces 14 and 15 of the protecting ring 13.
In Fig. 1 an embodiment example of a known formation of the parts of a bore crown of an equipment for a simultaneous drilling and lining of a bore hole is illustrated in a cross section view, in said example a casing pipe 5 'of steel is used, which in its lower most free end portion T has a sleeve formation 10' of steel, which is welded to the casing pipe 5' in order to constitute in the same time a shoulder 6' directed upwards for transferring of strokes driven downwards from a counter sink hammer via a shoulder surface 11' on the guide 3'.
In Fig. 3 a cross section view of the wearing ring 10 is illustrated, as it is formed according to the invention and in Fig. 4 a cross section view of the protecting ring 13 is illustrated, as it is formed according to the present invention.

Claims

Claims
1. A device for carrying out drilling in earth-layers and rocks during a simultaneous forcing downwards of a casing pipe (5) into the ground, whereby strokes from a countersink hammer via a bore crown or a guide (3) belonging to a bore crown (1) is provided to cooperate against a shoulder (6) situated at the lower most portion (7) of the casing pipe (5) in driving downwards of the casing pipe (5) into the bore hole made together with the bore crown (1) used, characterized in that the shoulder (6) is formed by a wearing ring (10) placed into position against an internally edge portion (8) within the casing pipe (5) for a direct or indirect cooperation against a shoulder surface (11) situated on the bore crown (1) or the guide (3) and which is faced downwards in a direction to the free, lower most portion (7) of the casing pipe (5).
2. A device according to claim 1, characterized in that the wearing ring (10) is intended for an indirect cooperation with said guide (3) via a protecting ring (13) extending between the inner mantle surface (9) of the casing pipe (5) and the guide (3) and between the inner mantle surface (9) of the casing pipe (5) with the adjacent wearing ring (10) and the guide, said protecting ring (13) in turn has a first shoulder surface (14) directed downwards for cooperation against the wearing ring (10) and a second shoulder surface (15) directed upwards for cooperation with the downwardly directed shoulder surface (11), which is provided on the guide (3).
EP08767039.4A 2007-05-21 2008-05-21 A device for drilling in earth-layers and rock Active EP2165039B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0701274A SE530357C2 (en) 2007-05-21 2007-05-21 Device for drilling in soil layers and rock
PCT/SE2008/000345 WO2008143577A1 (en) 2007-05-21 2008-05-21 A device for drilling in earth-layers and rock

Publications (4)

Publication Number Publication Date
EP2165039A1 true EP2165039A1 (en) 2010-03-24
EP2165039A4 EP2165039A4 (en) 2015-12-09
EP2165039B1 EP2165039B1 (en) 2017-12-27
EP2165039B8 EP2165039B8 (en) 2018-02-21

Family

ID=39356797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08767039.4A Active EP2165039B8 (en) 2007-05-21 2008-05-21 A device for drilling in earth-layers and rock

Country Status (3)

Country Link
EP (1) EP2165039B8 (en)
SE (1) SE530357C2 (en)
WO (1) WO2008143577A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20085961A0 (en) * 2008-10-13 2008-10-13 Atlas Copco Rotex Ab Oy Method and drilling device for submersible drilling
WO2015044508A1 (en) * 2013-09-30 2015-04-02 Oy Atlas Copco Rotex Ab Method for putting together of a drilling device and drilling device
FI20165116L (en) * 2016-02-17 2017-08-18 Geonex Oy Drilling device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706764A (en) * 1986-08-01 1987-11-17 Ingersoll-Rand Company Two piece down hole drill chuck
SE503324C2 (en) * 1990-02-19 1996-05-28 Sandvik Ab Drilling tool for lowering drilling, with central pilot crown
US5009271A (en) * 1990-07-16 1991-04-23 Milan Maric Drill assembly
US5803192A (en) * 1996-05-13 1998-09-08 Holte; Ardis L. Drill bit retainer for a down hole hammer assembly
US5647447A (en) * 1996-06-10 1997-07-15 Ingersoll-Rand Company Bit retention device for a bit and chuck assembly of a down-the-hole percussive drill
US6502650B1 (en) * 2000-11-15 2003-01-07 Sandvik Ab Percussive down-the-hole hammer for rock drilling, and a drill bit used therein
SE522135C2 (en) 2001-07-02 2004-01-13 Uno Loef Drilling tools for lowering drilling
SE0400929L (en) * 2004-04-07 2005-09-27 Atlas Copco Rotex Ab Oy Device for lowering drilling tools with pilot drill bit, pusher and guide body
KR100685386B1 (en) * 2004-09-03 2007-02-22 임병덕 A drilling apparatus having in-line extending wings and driving method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008143577A1 *

Also Published As

Publication number Publication date
EP2165039B1 (en) 2017-12-27
SE0701274L (en) 2008-05-13
EP2165039A4 (en) 2015-12-09
WO2008143577A1 (en) 2008-11-27
EP2165039B8 (en) 2018-02-21
SE530357C2 (en) 2008-05-13

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