| 一种新型动电测井探测器研究与实验测试（英文） |
| |
| 引用本文： | 李丰波,鞠晓东,乔文孝,卢俊强,门百永.一种新型动电测井探测器研究与实验测试（英文）[J].应用地球物理,2014(4):364-373. |
| |
| 作者姓名： | 李丰波 鞠晓东 乔文孝 卢俊强 门百永 |
| |
| 作者单位： | 中国石油大学油气资源与探测国家重点实验室;北京市地球探测与信息技术重点实验室; |
| |
| 基金项目： | supported by the National Science Foundation of China(No.61102102,11134011,11204380 and 11374371);Major National Science and Technology Projects(No.2011ZX05020-009);Science and Technology Project of CNPC(No.2014A-3912 and 2011B-4001);Petro China Innovation Foundation(No.2014D-5006-0307) |
| |
| 摘 要： | 目前对动电测井的研究主要集中于数值模拟和岩石物理实验。为研发出能下井测量的动电测井仪器,进行了一系列实验研究工作。文中介绍了一种融合了不同结构和材料要求的新型声电复合式动电测井探测器的结构及原理,对声、电信号接收器在仪器机械设计上无法布置在同一位置的难题也提出了解决方法。在水池中对其辐射声场特性进行了测试,计算了辐射声场声压及发射电压响应,分析了基于相控线阵的阵列式声波发射探头的指向性及实际应用效果。研究表明,在源距1500 mm处产生的声压可达47.2 kPa,且会随着激励声源主频增大而减小。随着相邻声波发射子阵激励信号延迟时间的增加,辐射声束主瓣会发生明显偏转,主瓣方向的能量也逐渐增强,可有效增强声电转换效率。本文为探测器研制及开展井下动电测井研究奠定了重要基础。
|
| 关 键 词： | 动电测井 震电测井 动电效应 震电效应 声电效应 声场 |
Research and experimental testing of a new kind electrokinetic logging tool |
| |
| Institution: | Li Feng-Bo, Ju Xiao-Dong, Qiao Wen-Xiao, Lu Jun-Qiang, and Men Bai-Rong |
| |
| Abstract: | We designed a new downhole electrokinetic logging tool based on numericalsimulations and petrophysical experiments. Acoustic and electric receivers cannot be arrangedat the same depth, and the proposed composite electrokinetic logging tool offers a solutionto this problem. The sound field characteristics of the detectors were tested in a water tank inthe laboratory. Then, we calculated the sound pressure of the radiated acoustic field and thetransmitting voltage response of the transmitting transducers; in addition, we analyzed thedirectivity and application of the acoustic transmitting probe based on linear phased array.The results suggest that the sound pressure generated at 1500 mm spacing reaches up to 47.2k Pa and decreases with increasing acoustic source frequency. When the excitation signalsdelay time of adjacent acoustic transmitting subarrays increases, the radiation beam of themain lobe is deflected and its energy gradually increases, which presumably enhances theacoustoelectric conversion efficiency. |
| |
| Keywords: | electrokinetic logging seismoelectric well logging seismoelectric effect electrokinetic effect acoustoelectric effect sound field |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
