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    • 5. 发明授权
    • System and methods for detecting casing collars
    • 套管检测系统及方法
    • US06896056B2
    • 2005-05-24
    • US10156399
    • 2002-05-28
    • Luis MendezDarrin WillauerJames R. Bridges
    • Luis MendezDarrin WillauerJames R. Bridges
    • E21B47/09E21B47/14E21B47/00
    • E21B47/14E21B47/0905
    • A tubing conveyed casing collar locator system that detects the casing collars in a wellbore and acoustically transmits the information through the tubing to the surface where it is detected and processed in a surface processor. The system comprises a downhole tool which comprises downhole sensors, a signal processor with memory, a drive circuit, a battery pack, and a signal generator. The surface system comprises a surface processor, depth system, and acoustic signal transmitter/receiver. The downhole tool detects casing collars as the tool is moved through the collar and acoustically transmits the data or stores the data in downhole memory according to programmed instructions. In one embodiment, the tool compares sensor signals from production elements, such as valves, to stored sensor signatures to uniquely identify the downhole element. In one embodiment, the downhole tool changes operating modes in response to surface command.
    • 管道输送套管定位器系统,其检测井眼中的套管套环,并将信息通过管道传播到在表面处理器中被检测和处理的表面。 该系统包括井下工具,其包括井下传感器,具有存储器的信号处理器,驱动电路,电池组和信号发生器。 表面系统包括表面处理器,深度系统和声学信号发射器/接收器。 井下工具在工具移动穿过套环并声学传输数据或根据程序指令将数据存储在井下存储器中时,检测套管套环。 在一个实施例中,该工具将来自生产元件(例如阀)的传感器信号与存储的传感器特征进行比较,以唯一地识别井下元件。 在一个实施例中,井下工具响应于表面命令改变操作模式。
    • 9. 发明授权
    • Bidirectional temperature and pressure effect compensator for inflatable elements
    • 用于充气元件的双向温度和压力效应补偿器
    • US06289994B1
    • 2001-09-18
    • US09290652
    • 1999-04-12
    • Darrin Willauer
    • Darrin Willauer
    • E21B33128
    • E21B33/127
    • A compensating system for an inflatable element is disclosed which can be responsive to a temperature increase or decrease and still regulate the inflate pressure of the inflatable element, despite fluctuations in pressures above or below the element. A compensating piston with an atmospheric chamber is used. The compensating piston is coupled to a balancing piston. The balancing piston is ported to receive pressure from above the element on one side, and below the element on the other side. When the apparatus is run in the hole, wellbore pressure causes the compensating piston to be in the collapsed position. Upon inflation, the compensating piston strokes. A positioning mechanism positions the compensating piston in the center to allow it to handle both temperature increases and decreases. Upon complete inflation of the element, the positioning mechanism releases the balancing piston to let it float and porting is opened from above and below the inflated element to the balancing piston. The balancing piston applies an opposite load on the compensating piston to counteract either a change in inject pressure from above or formation pressure from below.
    • 公开了一种用于可膨胀元件的补偿系统,其可以响应温度升高或降低,并且仍然调节可膨胀元件的膨胀压力,尽管压力高于或低于元件的压力。 使用具有大气室的补偿活塞。 补偿活塞联接到平衡活塞。 平衡活塞被移动以在一侧上方的元件上方并且在另一侧的元件下面接收压力。 当设备在孔中运行时,井眼压力导致补偿活塞处于折叠位置。 在膨胀时,补偿活塞行程。 定位机构将补偿活塞定位在中心,以允许其处理温度升高和降低。 当元件完全膨胀时,定位机构释放平衡活塞以使其浮起并且从膨胀元件的上方和下方开口到平衡活塞。 平衡活塞在补偿活塞上施加相反的载荷,以抵消来自上述的喷射压力的变化或来自下方的地层压力。