DE1223779B - Conical roller chisels, especially for horizontal bores - Google Patents

Conical roller chisels, especially for horizontal bores

Info

Publication number
DE1223779B
DE1223779B DES101887A DES0101887A DE1223779B DE 1223779 B DE1223779 B DE 1223779B DE S101887 A DES101887 A DE S101887A DE S0101887 A DES0101887 A DE S0101887A DE 1223779 B DE1223779 B DE 1223779B
Authority
DE
Germany
Prior art keywords
conical roller
cutting rollers
horizontal bores
chisel
chisels
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.)
Pending
Application number
DES101887A
Other languages
German (de)
Inventor
Herbert Kroll
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.)
Soeding & Halbach J C
Original Assignee
Soeding & Halbach J C
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 Soeding & Halbach J C filed Critical Soeding & Halbach J C
Priority to DES101887A priority Critical patent/DE1223779B/en
Publication of DE1223779B publication Critical patent/DE1223779B/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/14—Roller bits combined with non-rolling cutters other than of leading-portion type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

Description

Konusrollenmeißel, insbesondere für Horizontalbohrungen Die Erfindung bezieht sich auf einen Konusroffenmeißel zum Vortreiben von Bohrungen, insbesondere von horizontalen Pilotbohrlöchern.Conical roller bits, especially for horizontal bores The invention relates to a conical open chisel for driving bores, in particular of horizontal pilot wells.

Es sind Konusrollenmeißel mit drei unter 1201 zueinander angeordneten Schneidrollen und solche mit zwei unter 1801 zueinander stehenden Schneidrollen bekannt. Die Zahnreihen der Schneidrollen rollen unter Andruck an der Ortsbrust ab und lösen dort Gesteinspartikel ab. Dieses Bohrklein wird im allgemeinen, insbesondere jedoch dann, wenn ein Spül- mittel wie Wasser oder Luft nicht verwendet werden darf oder kann, durch Schnecken, die um das Antriebsgestänge angeordnet sind, aus dem Bohrloch heraustransportiert.There are conical roller bits with three cutting rollers arranged at 1201 to one another and those with two cutting rollers at 1801 to one another. The rows of teeth on the cutting rollers roll off the face under pressure and loosen rock particles there. This cuttings is generally, but especially when a flushing agent such as water or air must not or cannot be used, transported out of the borehole by screws which are arranged around the drive rod.

Dieses Verfahren hat einen wesentlichen Nachteil insofern, als die Bohrgutaufnahme im Bereich des Meißels bei Verwendung üblicher Konusrollenmeißel ungenügend ist. Aus konstruktiven Gründen kann die Transportschnecke bei den bisherigen Meißeln nicht bis in die Nähe der Ortsbrust vorgezogen werden, wodurch sich das Bohrklein im Bereich der Konusschneidrollen staut. Das Bohrgut dringt in die Lagerung der Schneidrollen ein, was erhöhten Verschleiß mit sich bringt und zum Abwürgen des Bohrgestänges führen kann.This method has a significant disadvantage in that the Drill cuttings in the area of the chisel when using conventional conical roller chisels is insufficient. For structural reasons, the screw conveyor can be used with the previous Chisels should not be pulled into the vicinity of the working face, which means that Cuttings accumulate in the area of the conical cutting rollers. The cuttings penetrate the storage the cutting rollers, which leads to increased wear and tear and stalling of the drill pipe.

Der erfindungsgemäße Konusrollenmeißel beseitigt diesen Nachteil dadurch, daß zwei Schneidrollen, deren Zahnreihen die gesamte Ortsbrust bearbeiten, unsymmetrisch, vorzugsweise unter 120' zueinander angeordnet sind und im verbleibenden größeren Winkelbereich eine flachgängige, sich von der Ebene der Ortsbrust nach hinten erstreckende Schnecke vorgesehen ist.The conical roller bit according to the invention eliminates this disadvantage in that that two cutters, the rows of teeth of which work the entire face, are asymmetrical, are preferably arranged at 120 'to each other and in the remaining larger Angular range is a flat, extending rearward from the plane of the working face Snail is provided.

In der nachfolgenden Beschreibung wird die Ausführungsform des erfindungsgemäßen Meißels an Hand der Zeichnungen beschrieben. Es zeigt F i g. 1 eine perspektivische Darstellung des Meißels, F i g. 2 eine Draufsicht auf den Meißel.In the following description, the embodiment of the chisel according to the invention is described with reference to the drawings. It shows F i g. 1 is a perspective view of the chisel, FIG . Figure 2 is a plan view of the chisel.

An dem Grundkörper 1 des Konusrollenmeißels sind auf 2 unter 120' zueinander angeordneten in Bohrlochrichtung geneigten Achsen 2 die Schneidrollen 3 drehbar gelagert. In dem verbleibenden, größeren Winkelbereich ist eine flachgängige, sich von der Ebene der Ortsbrust 4 nach hinten erstreckende Schnecke 5 angebracht.On the base body 1 of the conical roller bit, the cutting rollers 3 are rotatably mounted on 2 axes 2 arranged at 120 'to one another and inclined in the direction of the borehole. In the remaining, larger angular range, a flat-running screw 5 extending backwards from the plane of the face 4 is attached.

Die Schnecke liegt dabei an der Bohrlochwandung 6 an und ermöglicht dadurch einen einwandfreien Abtransport des Bohrgutes wie auch eine genaue Zentrierung des Konusrollenmeißels.The worm rests against the borehole wall 6 and thereby enables the drilling material to be transported away properly as well as precise centering of the conical roller bit.

Selbstverständlich ist die Verwendungsmöglichkeit des erfindungsgemäßen Meißels nicht nur auf Horizontalbohrungen beschränkt. Auch bei Vertikalbohrungen, vornehmlich bei geringer Spülungsmenge, ist die die Bohrgutabführung begünstigende Ausführung des Erfindungsgegenstandes sinnvoll einzusetzen.The possibility of using the invention is of course Chisel is not just limited to horizontal drilling. Even with vertical bores, primarily with a small amount of mud, it is beneficial for the removal of the cuttings Implementation of the subject matter of the invention sensibly.

Claims (1)

Patentanspruch: Konusrollentneißel mit zwei auf in Bohrlochrichtung angewinkelten Achsen rotierenden Schneidrollen, dadurch gekennzeichnet, daß die Schneidrollen unsymmetrisch, vorzugsweise unter 120' zueinander angeordnet sind und im verbleibenden größeren Winkelbereich eine flachgängige Schnecke vorgesehen ist.Claim: cone roller chisel with two on in the direction of the borehole angled axes rotating cutting rollers, characterized in that the Cutting rollers are arranged asymmetrically, preferably at 120 'to each other and a shallow screw is provided in the remaining larger angular range is.
DES101887A 1966-02-08 1966-02-08 Conical roller chisels, especially for horizontal bores Pending DE1223779B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES101887A DE1223779B (en) 1966-02-08 1966-02-08 Conical roller chisels, especially for horizontal bores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES101887A DE1223779B (en) 1966-02-08 1966-02-08 Conical roller chisels, especially for horizontal bores

Publications (1)

Publication Number Publication Date
DE1223779B true DE1223779B (en) 1966-09-01

Family

ID=7524065

Family Applications (1)

Application Number Title Priority Date Filing Date
DES101887A Pending DE1223779B (en) 1966-02-08 1966-02-08 Conical roller chisels, especially for horizontal bores

Country Status (1)

Country Link
DE (1) DE1223779B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706765A (en) * 1986-08-11 1987-11-17 Four E Inc. Drill bit assembly
US4953641A (en) * 1989-04-27 1990-09-04 Hughes Tool Company Two cone bit with non-opposite cones
US5695018A (en) * 1995-09-13 1997-12-09 Baker Hughes Incorporated Earth-boring bit with negative offset and inverted gage cutting elements
US7316281B2 (en) 2004-09-10 2008-01-08 Smith International, Inc. Two-cone drill bit with enhanced stability

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706765A (en) * 1986-08-11 1987-11-17 Four E Inc. Drill bit assembly
US4953641A (en) * 1989-04-27 1990-09-04 Hughes Tool Company Two cone bit with non-opposite cones
EP0395572A1 (en) * 1989-04-27 1990-10-31 Baker Hughes Incorporated Two-cone bit with non-opposite cones
USRE34526E (en) * 1989-04-27 1994-02-01 Baker Hughes Incorporated Two cone bit with non-opposite cones
US5695018A (en) * 1995-09-13 1997-12-09 Baker Hughes Incorporated Earth-boring bit with negative offset and inverted gage cutting elements
US7316281B2 (en) 2004-09-10 2008-01-08 Smith International, Inc. Two-cone drill bit with enhanced stability

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