【作者】 黄向东； 戴红； 周奇勋；

【Author】 Huang Xiangdong, Dai Hong, Zhou Qixun(School of Electric and Control, Xi’an University of Science & Technology, Xi’an 710054, China)

【机构】 西安科技大学电气与控制工程学院；

【摘要】 针对油井下的特殊环境和测试资料准确度越来越高的要求,设计了由数据采集系统芯片ADuC834构成的高精度、低功耗、小直径存储式电子压力计。通过USB串行通讯接口将压力计在井下所采集的数据上传至PC机中,采用最小二乘法和二元分段线性插值法分别实现了压力数据的非线性补偿和温度补偿。该压力计性能良好,已成功应用于油井开发中。更多还原

【Abstract】 In consideration of the special environment in oil wells and the requirements for higher accuracy of well-testing data, a novel memory downhole pressure gauge was designed. It was characterized with its high precision, low power dissipation and small size. The gauge was connected with PC by using USB interface and the sampled data uploading was performed. The measurement error was compensated by least squares method and dual linear interpolated arithmetic. The gauge was successfully applied to industrial wells.更多还原