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    • 51. 发明公开
    • Drilling tool
    • 钻井工具
    • EP0391873A3
    • 1991-04-03
    • EP90850127.3
    • 1990-04-03
    • UNIROC AKTIEBOLAG
    • Löf, Stig Uno
    • E21B7/20
    • E21B10/327E21B7/20E21B10/32E21B10/40E21B10/66
    • A drilling tool is followed by a casing tube (11) down the drilled hole. The mouth of the casing tube (11) centers rotatably a guide member (10) which receives rotation and impact energy via the interior of the casing tube (11). A drill bit (20) consists integrally of an axially protruding pilot portion (23), a sidewise projecting eccentric portion (22) and a rear shaft (21). The shaft (21) extends pivotally and axially movably into an eccentrically disposed bore (24) in the guide member (10). Axially spaced peripheral end grooves (30,32) extend in opposite direction from an axial cam groove (31) on the shaft (21) and are engaged by a follo­wer (28) in the guide member (10) defining positively the axial and angular movability and positions thereof relative to the drill bit (20). In the forward end groove (32) the follower (28) maintains the drill bit (20) axially in dril­ling position adjacent to the guide member (10) with the eccentric portion (22) protruding to drill a hole larger than the casing tube (11). In an intermediate position 90° away from the drilling position, the follower (28) enters the cam groove (31) whereby the guide member (10) becomes axially movable the distance between the end grooves (30,32). In a rear axial position the guide member (10) by a continued 90° turn brings the follower (28) into the rear end groove (30) to axially define the retracted position of the drill bit (20), wherein it can be raised or lowered freely through the casing tube (11).
    • 53. 发明公开
    • Drill tool
    • 钻具
    • EP0402337A2
    • 1990-12-12
    • EP90850220.6
    • 1990-05-31
    • SANDVIK AKTIEBOLAG
    • Jansson, Kjell-OveLundahl, Björn
    • B28D1/14E21B7/20E21B10/00B23B51/00
    • E21B10/327E21B7/20E21B7/208E21B10/38E21B10/40E21B10/66E21B21/12
    • The present invention relates to a drill tool for rotary and/or percussive drilling comprising a drill head (10;10˝) including a pilot means (11;11˝) and a reamer means (12;12˝) located behind the pilot means (11;11˝) seen in the feed direction of the tool, guide means (16;16′;16˝;16‴) to guide said drill tool relative to a casing tube (15;15′) surrounding said guide means (16;16′;16˝;16‴), and cooperating driving means (18,19) on the guide means (16;16′;16˝;16‴) and the casing tube (15;15′), respectively, for downwards axial displacement of the casing tube (15;15′), and means for connecting said drill tool to a hammer drilling equipment. The invention also relates to a casing tube and a guide means per se.
      When drilling through an overburden by a drill tool of the type specified above it quite often happens that the casing tube get stuck by wedge action from loose rock segments or by a sucking action, especially when the overburden consists of clay.
      The present invention is characterized in that the casing tube (15;15′) is rotated by cooperating driving means on the guide means (16;16′;16˝;16‴) and the casing tube (15;15′).
    • 本发明涉及一种用于旋转和/或冲击钻井的钻具,其包括包括导向装置(11; 11“)和位于导向装置(12; 12”)后面的扩眼器装置(12; 12“)的钻头 (16; 16'; 16“; 16”)相对于围绕所述引导装置(15; 15')的套管(15; 15')引导所述钻具的引导装置 (16; 16'; 16“; 16”)和配合驱动装置(18,19)分别在引导装置(16; 16'; 16“; 16”)和套管(15; 15' 用于套管(15; 15')的向下轴向位移,以及用于将所述钻具连接到锤钻设备的装置。 本发明还涉及套管和导向装置本身。 当通过上述类型的钻具钻过覆盖层时,通常会发生套管由于松散的岩石段的楔形作用或通过吸力作用而卡住,特别是当覆盖层由粘土组成时。 本发明的特征在于,套管(15; 15')通过在导向装置(16; 16'; 16“; 16”)和套管(15; 15')上配合驱动装置而转动。
    • 54. 发明公开
    • Flushing means for drilling tools
    • BohrspülungseinrichtungfürBohrwerkzeuge。
    • EP0391874A2
    • 1990-10-10
    • EP90850128.1
    • 1990-04-03
    • UNIROC AKTIEBOLAG
    • Löf, Stig Uno
    • E21B11/02
    • E21B10/327E21B7/20E21B10/38E21B10/66E21B21/10E21B34/12
    • A flushing means for drilling tools comprises a guide member (10) carrying a drill bit (20) and being rotatably centered by the mouth of a casing tube (11) which is adapted to follow the drilling tool downhole during drilling. The drill bit (20) has a bit portion (22) that projects laterally beyond and is spaced axially in front of the casing tube (11) so as to drill a hole larger than the casing tube (11). There are external flushing grooves (70,71) on the guide member (10) adapted to lead the outflow of flushing medium and debris from the hole during drilling into the casing tube (11). At least one of these grooves (70) extends from front to rear of the guide member (10). One or more further grooves (71) are open towards said rear while ending blindly into the peri­phery of the guide member (10) spaced from its front. By re­traction of the guide member (10) its front enters the casing tube (11). That closes the blind grooves (71) and an intensi­fied flushing is thus possible via the remaining open grooves (70) that extends from front to rear of the guide member (10). The cutting front (40) of the bit portion (22) is flushed rotatively in counter flow to the rotational drilling direc­tion (8) towards the full length groove (70).
    • 用于钻具的冲洗装置包括承载钻头(20)的引导构件(10),并且可旋转地以套管(11)的口为中心,该套管适于在钻孔期间沿着井下钻探工具。 所述钻头(20)具有在所述套管(11)之前横向突出并且在所述套管(11)前方轴向间隔开的钻头部分(22),以钻出比所述套管(11)大的孔。 在引导构件(10)上有外部冲洗槽(70,71),其适于在冲洗过程中引导冲洗介质的流出物和来自孔的碎屑进入套管(11)。 这些凹槽(70)中的至少一个从引导构件(10)的前部延伸到后部。 一个或多个另外的凹槽(71)朝着所述后部开口,同时盲目地进入与其前部间隔开的引导构件(10)的周边。 通过引导构件(10)的缩回,其前部进入套管(11)。 闭合盲槽(71)并且通过从引导构件(10)的前后延伸的剩余的开口槽(70)可以进行增强的冲洗。 钻头部分(22)的切割前部(40)以相对于旋转钻孔方向(8)朝向全长凹槽(70)逆向旋转地冲洗。
    • 56. 发明公开
    • Rotary drilling tool with an expansible reamer
    • Drehbohrwerkzeug mit einem ausstellbarenRäumer。
    • EP0263088A2
    • 1988-04-06
    • EP87850287.1
    • 1987-09-23
    • LÖVAB LÖF OCH ÖSTLUND AB
    • Löf, Uno
    • E21B10/32E21B7/20
    • E21B10/327
    • The invention relates to a simplified and reliably functioning drill tool for a sinker drill for drilling in loose earth, such as when rein­forcing the foundations in connection with building. The drill tool according to the present invention is in two parts and consists of an upper cylindrical transition piece (1), its central axis coinciding with the rotary axis of the drill tool, and provided with an eccentric, cylin­drical hole (4), and of a lower reamer piece (2) provided with an up­wardly directed shaft (3) to fit into the hole. In operating position the shaft (3) is fully inserted into the hole (4) and the transition piece (1) and reamer piece (2) cooperate. In extraction position the shaft (3) is partially withdrawn from the hole (4) to permit the drill (1,2) to be drawn up through a casing-tube.
    • 本发明涉及一种用于在松土中钻孔的沉降片钻机的简化且可靠地运行的钻具,例如当加强与建筑相关的基础时。 根据本发明的钻具分为两部分,由上部圆柱形过渡件(1)组成,其中心轴线与钻具的旋转轴线重合,并具有偏心的圆柱形孔(4),以及 具有向上指向的轴(3)以装配到孔中的下铰刀片(2)。 在操作位置,轴(3)完全插入孔(4)中,过渡件(1)和扩孔器(2)配合。 在提取位置,轴(3)从孔(4)部分地撤回,以允许钻(1,2)通过套管被拉出。
    • 57. 发明公开
    • Verfahren und Vorrichtung zum gesteuerten unterirdischen Vortrieb von Rohren im unbegehbaren Durchmesserbereich
    • 在不可逾越直径范围的管道的控制地下预先方法和装置。
    • EP0159573A1
    • 1985-10-30
    • EP85103778.8
    • 1985-03-28
    • Witte Bohrtechnik GmbH
    • Englisch, ReinholdBosse, Carl B.
    • E21B7/20E21B10/32E21B7/04
    • E21B7/20E21B7/046E21B10/327
    • © Bei diesem Verfahren wird zunächst von der Startgrube (1) ein Hüllrohrzug (3,3') vorgetrieben. Das dabei eingesetzte Bohrwerkzeug für die Bodenbearbeitung kann gegebenenfalls zur Startgrube (1) zurückgezogen und zeitweilig durch ein Bohrwerkzeug zum Durchbohren fester Hindernisse ersetzt werden. Letzteres kann auch zum Durchbohren eines Zielobjektes (2) eingesetzt werden. Durch den Hüllrohrzug (3, 3') kann dann ein Produktenrohrzug (4) zum Zielobjekt (2) vorgeschoben werden. Der Hüllrohrzug (3, 3') kann unter Festhaltung des Produktenrohrzuges (4) zur Startgrube (1) zurückgezogen werden.
    • 1.一种用于管道的控制地下提前(4)在非流通直径范围内,其包括向前挤管线(4)中,从起始挖掘(1)开始的过程,膨胀或去除地球用 钻孔工具(15,18),并且可能与去除被输送到起始挖掘(1)地球,其特征在于在没有首先,从起始挖掘(1)开始包围管路包括包住管道(3,3' )做了哪些是内径的比产品管(4)要布置的外径大先进,可能除了与外密封件(5),所述钻孔工具(15),用于镗通过地球 可能通过已经被压向前到其上的包覆管线(3,3“),和一个钻孔工具(18),用于通过固体障碍镗撤回到初始挖掘(1)从起始挖掘(1)通过向前推动 该包覆部管路(3,3“)和所述障碍物感到无聊THROU GH,当目标对象到达(2),如果有必要在该包覆部管路钻具后(3,3“)具有预先拉回,一个钻孔工具通过目标推进从起始挖掘孔 对象(2),所述钻孔工具通过(2),然后一个产品管线(4)从开始挖掘(1)通过包围管向前推所述目标对象镗后再次缩回到起始挖掘(1) “(2),最后是包覆管线(3,3到目标对象)线(3,3)”缩回到起始挖掘(1),与产品管路(4)被固定在适当位置。