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1. 发明授权

US5062048A Stretch corrected wireline depth measuring error and log quality indicator method and apparatus 失效
标题翻译：拉伸校正电缆深度测量误差和测井质量指标的方法和装置
公开(公告)号：US5062048A
公开(公告)日：1991-10-29
申请号：US387746
申请日：1989-08-01
申请人： Kenneth T. Coulter , Kenneth R. Goodman
发明人： Kenneth T. Coulter , Kenneth R. Goodman
IPC分类号： E21B47/04 , G01B7/02 , G01B7/04 , G01B7/26
CPC分类号： G01B7/26 , E21B47/04 , G01B7/026 , G01B7/046
摘要： A stretch corrected wireline depth measuring system is set forth including method and apparatus. It forms a log quality indication which indicates those occasions where the tool velocity is outside acceptable limits. The apparatus utilizes calibrated encoder wheels, preferably a redundant and duplicate pair, to form pulse trains indicative of surface wireline velocity. Additional measurements are made of wireline tension, and magnetic marks on the wireline are observed. All of this data is input to a CPU which determines the raw depth, and adjusts this value with depth corrections. The device calculates wireline stretch as a function of tension and total wireline in the borehole. This enables formation of output data as a function of depth including cable tension, tool speed, depth correction and log quality in the event that tool velocity is outside an acceptable range.
摘要翻译：提出了一种拉伸校正电缆深度测量系统，包括方法和装置。它形成对数质量指示，表明刀具速度在可接受极限之外的那些场合。该装置使用校准的编码器轮，优选地是冗余和重复对，以形成指示表面线速度的脉冲序列。额外的测量是电缆张力，并且观察到电缆上的磁痕。所有这些数据都输入到确定原始深度的CPU，并通过深度校正来调整该值。该装置根据钻孔中的拉力和总线计算有线拉伸。这使得能够在刀具速度超出可接受范围的情况下形成输出数据作为深度的函数，包括电缆张力，刀具速度，深度校正和对数质量。

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