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    • 25. 发明授权
    • Morphable bit
    • 变态的位
    • US07836975B2
    • 2010-11-23
    • US11923160
    • 2007-10-24
    • Kuo-Chiang ChenGeoff Downton
    • Kuo-Chiang ChenGeoff Downton
    • E21B10/38
    • E21B10/633E21B7/064
    • A bottom hole assembly for drilling a cavity including a chassis configured to rotate is provided. The chassis may include a conduit, a circuit, a pressure transfer device, a plurality of pistons, a plurality of valves, and a plurality of cutters. The conduit may accept a first flow of a primary fluid. The circuit may have a second flow of a secondary fluid. The pressure transfer device may be configured to transfer pressure between the flows. The pistons may be operably coupled with the circuit, and each piston may be configured to move based at least in part on a pressure of the circuit at that piston, with the valves possibly configured to control a pressure of the circuit at each piston. Each cutter may be coupled with one of the pistons.
    • 提供一种用于钻孔的底孔组件,其包括被配置为旋转的底盘。 底盘可以包括导管,电路,压力传递装置,多个活塞,多个阀和多个切割器。 导管可接受初级流体的第一流。 电路可以具有第二流体的第二流。 压力传递装置可以构造成在流动之间传递压力。 活塞可以与电路可操作地联接,并且每个活塞可以构造成至少部分地基于该活塞处的电路的压力移动,其中阀可以被配置为控制每个活塞处的电路的压力。 每个切割器可以与其中一个活塞结合。
    • 30. 发明申请
    • [APPARATUS AND METHODS FOR PRESSURE COMPENSATED CONTACT WITH THE BOREHOLE WALL]
    • [井壁压力接触装置及其方法]
    • US20050056421A1
    • 2005-03-17
    • US10605200
    • 2003-09-15
    • Dean HomanKuo-Chiang Chen
    • Dean HomanKuo-Chiang Chen
    • G01V11/00E21B47/00
    • G01V11/005
    • A well logging tool includes a housing; at least one piston moveably disposed on the housing; at least one sensor disposed on the at least one piston; a pressure compensation system coupled to the at least one piston such that a pressure at a back side of the at least one piston is substantially identical to a pressure outside the well logging tool; and a piston deployment mechanism for deploying the at least one piston. A method for well logging using a logging tool having at least one piston and a pressure compensating system, wherein the at least one piston includes at least one sensor, the method includes disposing the well logging tool in a borehole; deploying the at least one piston to establish a contact between the at least one piston and a wall of the borehole; and measuring a formation property using the at least one sensor.
    • 测井工具包括一个壳体; 可移动地设置在所述壳体上的至少一个活塞; 设置在所述至少一个活塞上的至少一个传感器; 压力补偿系统,其耦合到所述至少一个活塞,使得所述至少一个活塞的后侧处的压力基本上与所述测井工具外部的压力相同; 以及用于展开所述至少一个活塞的活塞展开机构。 一种使用具有至少一个活塞和压力补偿系统的测井工具进行测井的方法,其中所述至少一个活塞包括至少一个传感器,所述方法包括将测井仪器设置在钻孔中; 展开所述至少一个活塞以在所述至少一个活塞和所述钻孔的壁之间建立接触; 以及使用所述至少一个传感器测量形成特性。