[1]陈雪莲,魏周拓,王延茂.相控线阵声源在裸眼井和套管井外地层中产生的声束对比[J].测井技术,2012,36(04):352-356.
 CHEN Xuelian,WEI Zhoutuo,WANG Yanmao.Contrasting Beam Steering of Broadbandwidth Phasedarray in Formation Between Cased and Open Holes[J].WELL LOGGING TECHNOLOGY,2012,36(04):352-356.
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相控线阵声源在裸眼井和套管井外地层中产生的声束对比()
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《测井技术》[ISSN:1004-1338/CN:61-1223/TE]

卷:
第36卷
期数:
2012年04期
页码:
352-356
栏目:
方法研究
出版日期:
2012-10-30

文章信息/Info

Title:
Contrasting Beam Steering of Broadbandwidth Phasedarray in Formation Between Cased and Open Holes
作者:
陈雪莲12魏周拓12王延茂3
1.中国石油大学地球资源与信息学院, 山东 青岛 266555; 2.中国石油测井重点实验室华东研究室, 山东 青岛 266555; 3.中国石油西部钻探工程有限公司测井公司,  新疆 克拉玛依 834000
Author(s):
CHEN Xuelian12WEI Zhoutuo12WANG Yanmao3
1.College of Georesources and Information, China University of Petroleum, Qingdao, Shandong 266555, China; 2.Well Logging Key Lab of CNPC, China University of Petroleum, Qingdao, Shandong 266555, China; 3.Wireline Logging Company, Xibu Drilling Engineering CO. LTD., CNPC, Karamay, Xinjiang 834000, China
关键词:
声波测井 相控线阵声源 声束 套管井 裸眼井
Keywords:
acoustic logging phasedarray transmitter beam cased well open well
分类号:
P631811
文献标志码:
A
摘要:
套管井中的声传播涉及到波在柱状多层介质中的传播问题。通过数值计算对比了宽频带相控线阵声源在套管井和裸眼井外地层中产生的纵波声场。结果显示声源辐射的声波经过套管、水泥等多层介质后在地层中的声波幅度较裸眼井相比降低了约80 dB,当套管井胶结差时辐射到地层中的能量更低。套管井的胶结状况基本不影响相控线阵声源在地层中辐射主瓣的偏转方向,但会改变主瓣角宽,且在套管井第Ⅰ或第Ⅱ界面胶结差时使旁瓣级增强。
Abstract:
The phased array transmitter is a general tendency in the development of the acoustic logging tool. The application of linear phasedarray transmitter in a cased borehole relates to wave propagation in cylindrical multilayered medium. The compressional wave fields excited by the phasedarray transmitter are calculated both in the open and cased hole, the results of which show that the Pwave amplitude outside the casing decreases approximately 80 dB than that in the open hole. When the cased borehole cement bonding goes poorer and poorer, the radiated energy into the formation becomes lower and lower;The cemented conditions in the cased borehole don’t affect essentially the orientation of the main radiation lobe of the phased array transmitter. The main lobe width of the beam becomes narrower and narrower with the leading frequency higher and higher. The fluid layer in multilayered medium causes the main lobe width more wider.

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备注/Memo

备注/Memo:
收稿日期:20120207
作者简介: 陈雪莲,女,1976年生,博士,从事声波测井方法研究。
更新日期/Last Update: 2012-10-30