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1. 发明授权

US5368109A Apparatus for arcuate drilling 失效
标题翻译：弧形钻孔设备
公开(公告)号：US5368109A
公开(公告)日：1994-11-29
申请号：US145579
申请日：1993-11-04
申请人： Frederick J. Pittard, Jr. , Albert E. Roos, Jr. , Roger C. Leaf , Steven W. Drews
发明人： Frederick J. Pittard, Jr. , Albert E. Roos, Jr. , Roger C. Leaf , Steven W. Drews
IPC分类号： E21B4/02 , E21B7/06 , E21B7/08 , E21B17/16 , E21B17/20
CPC分类号： E21B7/068 , E21B17/16 , E21B17/20 , E21B4/02
摘要： A system of apparatus for arcuate drilling into the earth is disclosed which comprises a drill string extending into a well bore in the earth and a fluid operated drill motor and drill bit operated thereby secured on the bottom end of the drill string. The drill motor is connected at its upper end to the drill string and at its lower end to the drill bit for rotating the drill bit independently of rotation of the drill string. The drill motor has a tubular drive section housing constructed of non-magnetic material, preferably a Beta-C titanium alloy containing titanium, aluminum, vanadium, chromium, zirconium and molybdenum in the proportions Ti-3Al-8V-6Cr-4Zr-4Mo. The longitudinal axis of the drill motor housing has its upper and lower ends angularly displaced from the longitudinal axis of its central portion end for directing the axis of rotation of the drill bit such that it is angularly displaced from the axis of the drill string for effecting a curved path for the wellbore. An orienting/circulating/float sub constructed of non-magnetic material, preferably Beta-C titanium alloy, connected above the drill motor. A drill collar constructed of non-magnetic material, preferably Beta-C titanium alloy, is connected to the upper end of the orienting/circulating/float sub. The drill collar may be of a one-piece Beta-C titanium alloy with integral threaded ends or may have separate threaded end pieces of steel or Beta-C titanium alloy welded thereon. A survey tool is positioned in and surrounded by the orienting/circulating/float sub. A drilling rig, instruments and controls positioned on the earth surface and connected by wire lines and a wet connect to the survey tool. The structure and configuration of the respective components cooperate to facilitate bending through a radius of curvature as short as 20 feet.
摘要翻译：公开了一种用于弓形钻入地球的装置系统，其包括延伸到地球中的井眼中的钻柱，以及由此固定在钻柱的底端上的流体操作的钻机马达和钻头。钻头电机的上端连接到钻柱，并在其下端连接到钻头，用于独立于钻柱的旋转而旋转钻头。钻机电动机具有由非磁性材料构成的管状驱动部分壳体，优选地包含比例为Ti-3Al-8V-6Cr-4Zr-4Mo的钛，铝，钒，铬，锆和钼的β-C钛合金。钻机马达壳体的纵向轴线的上端和下端部与其中心部分端部的纵向轴线成角度地移位，用于引导钻头的旋转轴线，使其与钻柱的轴线成角度地移位，以实现井眼弯曲的路径。由钻头电机上方连接的非磁性材料（优选β-C钛合金）构成的定向/循环/浮子。由非磁性材料（优选β-C钛合金）构成的钻铤连接到定向/循环/浮子子的上端。钻铤可以是具有整体螺纹端的一体式的β-C钛合金，或者可以在其上焊接单独的钢或β-C钛合金的螺纹端部件。调查工具位于定向/循环/浮子附近并被其包围。位于地面上的钻机，仪器和控制装置，通过线路连接并与测量工具进行湿连接。相应部件的结构和结构协调起来，以便弯曲通过短达20英尺的曲率半径。

2. 发明授权

US5320179A Steering sub for flexible drilling 失效
标题翻译：转向子用于灵活钻孔
公开(公告)号：US5320179A
公开(公告)日：1994-06-14
申请号：US925100
申请日：1992-08-06
申请人： Albert E. Roos, Jr. , Roger C. Leaf , Frederick J. Pittard, Jr.
发明人： Albert E. Roos, Jr. , Roger C. Leaf , Frederick J. Pittard, Jr.
IPC分类号： E21B7/06 , E21B47/01 , E21B47/022
CPC分类号： E21B47/011 , E21B7/068
摘要： A flexible steering sub is disclosed for flexible drilling of horizontal wells, geothermal drilling for electric power generation; earth sciences study of and monitoring of earth movement with respect to fault movement; environmental science cleaning up of inaccessible polluted areas; coring to test rock strength prior to large scale constructions such as dams; introduction of chemicals for solution mining, and the like. The flexible sub comprises an elongated housing having a plurality of housing sections connectable at one end to an orientation sub for a PDM drill and connectable at the other end to a wire line connector. An electronics assembly including guidance directional sensors and probe is positioned in a plurality of the housing sections, interconnected electrically, and connected at one end to the wire line connector. Selected housing sections spaced along the length of the housing have portions intermediate their respective ends of sufficiently reduced outside diameter to bend in preference to bending of the housing sections containing the electronics assembly. The steering sub is operable during drilling to bend along its length at the reduced outside diameter housing sections on a short radius without bending the electronics assembly.
摘要翻译：公开了用于水平井的灵活钻井，用于发电的地热钻井的柔性转向子; 地球科学研究和监测地球运动相对于故障运动; 环境科学清理无法获取的污染地区; 在大型建筑物如大坝之前测试岩石强度; 引入用于溶液开采的化学品等。柔性子部件包括细长壳体，其具有多个壳体部分，其一端可连接到用于PDM钻头的定向子部分，并且在另一端可连接到线缆连接器。包括引导方向传感器和探针的电子组件定位在多个壳体部分中，电连接并且一端连接到线路连接器。沿着壳体的长度间隔开的所选择的壳体部分具有在其相应的端部之间的中间部分，其具有足够减小的外径，以优于包含电子组件的壳体部分的弯曲而弯曲。转向副在钻孔期间可操作以在短的半径处在减小的外径外壳部分沿其长度弯曲而不弯曲电子组件。

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