论文部分内容阅读
美国Ｓｐｅｒｒｙ -Ｓｕｎ公司研制成一种装在钻头上的伽玛 (ＧＡＢ)随钻测量 (ＭＷＤ)仪 ,简称伽玛仪。这是一种地层评价和深度校正仪器 ,它将一台闪烁检测器与多个锂电池装在 12 1ｍｍ的马达箱内 ,电路板则装在第二组硬合金齿镶体上。板内设有仪表电子装置、动力调节装置和短
The United States Sperry -Sun company developed into a drill mounted on the Gamma (GAB) while drilling measurement (MWD) instrument, referred to as Gamma meter. This is a formation evaluation and depth correction instrument that incorporates a flicker detector and multiple lithium batteries in a 12 1mm motor case mounted on a second set of hard alloy toothing. The board has instrumentation electronics, power conditioning and short