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    • 33. 发明授权
    • CONTROL DEVICE FOR DRILLING A BORE HOLE
    • 控制装置中钻孔
    • EP0737268B1
    • 1999-04-07
    • EP95905256.4
    • 1994-11-22
    • Liw, Lars
    • Liw, Lars
    • E21B17/10
    • E21B17/1014E21B4/18E21B7/062
    • The invention relates to a rock drill guide tool. A sleeve arrangement (8) is placed around a tubular drill tube (9) which rotates during a drilling operation and through which drilling liquid is supplied under pressure during drilling intervals. The sleeve arrangement includes a plurality of support units (15, 16) which can be projected out into contact with the wall of a drill hole and which are placed circularly in the sleeve arrangement. The support units are intended to be moved out into engagement with the wall of a drill hole during drilling intervals, so as to prevent the sleeve arrangement from rotating during a drilling operation. The support units (15, 16) are adapted to be held against the drill hole with a frictional force which is sufficiently low to enable it to become overcome in an axial direction by downward pressure of the drill tube during a drilling operation, and sufficiently high to latch the sleeve against rotation by the drill tube as the drill tube rotates. The support units (15, 16) are placed in at least two ring sections of the sleeve arrangement and are provided with elements (19; 20) which project out against the wall of a drill hole. These elements engage the rock so as to cut grooves into the wall of a drill hole as the drill is moved down during a drilling operation. The outwardly projecting elements of all shoulder ring sections are placed mutually sequentially in an axial direction along straight lines, so that the outwardly projecting elements that are located behind the foremost elements in each line of elements as seen in the drilling direction will move in grooves cut in the rock by the foremost elements as the drill moves downwards.
    • 34. 发明公开
    • Method and apparatus for conveying a logging tool through an earth formation
    • 用于将测井工具输送通过地层的方法和设备
    • EP0900914A2
    • 1999-03-10
    • EP98202742.7
    • 1998-08-17
    • Schlumberger Limited (a Netherland Antilles corp.)SCHLUMBERGER TECHNOLOGY B.V.
    • Sallwasser, Alan
    • E21B23/14E21B4/18
    • E21B4/18E21B23/14E21B2023/008
    • A conveyance apparatus for conveying at least one logging tool through an earth formation traversed by a horizontal or highly deviated borehole is disclosed. The conveyance apparatus comprises a pair of arcuate-shaped cams pivotally mounted to a support member, means for biasing the arcuate surface of each cam into contact with the borehole wall, and actuators operatively connected to each cam. A logging tool is attached to the conveyance apparatus. When either actuator is activated in a first direction, the cam connected to the activated actuator is linearly displaced forward and the arcuate surface of the cam slides along the borehole wall. When either actuator is activated in a second direction, the activated actuator pulls the connected cam backwards and the biasing means thereby urges the arcuate surface of the cam to lock against the borehole wall. Once the cam is locked, further movement of the actuator propels both the conveyance apparatus and the logging tool forward along the highly deviated or horizontal borehole.
    • 公开了一种输送设备,用于输送至少一个测井工具通过由水平或高度偏离的钻孔横穿的地层。 输送设备包括一对可枢转地安装到支撑构件上的弧形凸轮,用于将每个凸轮的弧形表面偏置成与钻孔壁接触的装置,以及可操作地连接到每个凸轮的致动器。 测井工具附着在运送装置上。 当任何一个致动器在第一方向上被激活时,连接到激活的致动器的凸轮向前线性移动,凸轮的弧形表面沿着钻孔壁滑动。 当任一致动器沿第二方向启动时,致动的致动器向后拉动连接的凸轮,并且偏置装置由此推动凸轮的弧形表面锁定在钻孔壁上。 一旦凸轮被锁定,致动器的进一步移动将沿着高度偏离的或水平的钻孔向前推进输送装置和测井工具。