新型低频电磁波井下数据无线传输技术  

New low frequency electromagnetic wave wireless transmission technology for downhole data

作　　者：姜楠 JIANG Nan(Testing Branch,PetroChina Daqing Oilfield Co.,Ltd.,Daqing,Heilongjiang 163412,China)

机构地区：[1]中国石油大庆油田有限责任公司试油试采分公司,黑龙江大庆163412

出　　处：《油气井测试》2022年第6期54-58,共5页Well Testing

基　　金：中油股份公司科技重大专项“海拉尔-依舒等外围盆地勘探技术完善与效益增储”子课题“凝析油气藏试油压裂方法及配套工艺技术研究”(QR/A0/7-12-01)。

摘　　要：井下无线传输技术受信号传输强度低、干扰大等限制难以获得及时、准确的压力、温度数据。新型低频电磁波井下数据无线传输技术将温度压力信号负载到井下闭合震荡电路中,通过采用超低频电磁波为传输载体及特殊通信机制,有效提高了井下数据无线传输性能。同时,配套的中继器可满足更大深度井的中级传输要求。大庆地区GL(274-245)井现场试验结果表明,井下存储压力计数据与无线传输数据对比吻合,信号清晰准确,取得预期的良好效果。该技术数据传输稳定可靠,能够满足水平井、大斜度井及3000 m以内井深的复杂井试采实时监控井下数据的需求,为试油气井求产优化提供了技术支持。Underground wireless transmission technology is limited by low signal transmission strength and large interference,so it is difficult to obtain timely and accurate pressure and temperature data.The new low frequency electromagnetic wave underground data wireless transmission technology loads the temperature and pressure signal into the underground closed oscillation circuit.By using ultra-low frequency electromagnetic wave as the transmission carrier and special communication mechanism,the underground data wireless transmission performance is effectively improved.At the same time,the matching repeater can meet the intermediate transmission requirements of deeper wells.The field test results of Well GL(274-245)in Daqing area show that the data of downhole stored pressure gauge is consistent with the data of wireless transmission,the signal is clear and accurate,and the expected good effect is achieved.The data transmission of this technology is stable and reliable,which can meet the demand of real-time monitoring downhole data for production test of horizontal wells,highly deviated wells and complex wells with depth less than 3000 m and provides technical support for production optimization of oil and gas testing wells.

关 键 词：井下压力计 无线传输 中继器 试油 低频电磁波 实时监控 

分 类 号：TE353[石油与天然气工程—油气田开发工程]