【摘要】 介绍了油井井下温度、压力、深度测量仪表的工作原理及基本结构,阐述了检测与传输方式的特点、提高测量精度和传输的可靠性,测量精度与测量时间成正比、远距离传输电缆的分布参数影响等问题.更多还原

【Abstract】 The operational principle and basic structure of the instruments for temperature, pressure and depth measurements under wells are introduced. The features of the detection and transmission are expounded . The paper states that the instruments enhance the measuring accuracy and the transmission reliability and the measuring accuracy is proportional to the measuring time. The effects of the distributed parameters of the long distance transmission cable are discussed.更多还原