[1]吕秀梅,李瑞丰,冯逾.超声脉冲回波测井信号影响因素数值模拟[J].测井技术,2019,43(03):263-267.[doi:10.16489/j.issn.1004-1338.2019.03.008]
 LYU Xiumei,LI Ruifeng,FENG Yu.Numerical Simulation of Influencing Factors on Ultrasonic Pulsed Echo Logging Signals[J].WELL LOGGING TECHNOLOGY,2019,43(03):263-267.[doi:10.16489/j.issn.1004-1338.2019.03.008]
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超声脉冲回波测井信号影响因素数值模拟()
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《测井技术》[ISSN:1004-1338/CN:61-1223/TE]

卷:
第43卷
期数:
2019年03期
页码:
263-267
栏目:
方法研究
出版日期:
2019-08-30

文章信息/Info

Title:
Numerical Simulation of Influencing Factors on Ultrasonic Pulsed Echo Logging Signals
文章编号:
1004-1338(2019)03-0263-05
作者:
吕秀梅 李瑞丰 冯逾
(大庆油田有限责任公司测试技术服务分公司, 黑龙江 大庆 163153)
Author(s):
LYU Xiumei LI Ruifeng FENG Yu
(Logging & Testing Services Company of Daqing Oilfield CO. LTD., Daqing, Heilongjiang 163453, China)
关键词:
测井解释 超声回波测井 套管水泥界面 水泥地层界面 流体环厚度 回波幅度 声阻抗
Keywords:
log interpretation ultrasonic echo logging casing-cement interface cement-formation interface thickness of fluid ring echo amplitude acoustic impedance
分类号:
P631.84
DOI:
10.16489/j.issn.1004-1338.2019.03.008
文献标志码:
A
摘要:
针对套管井超声脉冲回声测井进行固井质量评价和套管检测问题,建立了6层介质模型进行数值模拟考察并分析了超声脉冲回波测井中的各种影响因素。对完全胶结情况下数值模拟的全波进行套管地层环形空间介质声阻抗和套管壁厚反演,验证了数值模拟方法及反演方法的正确性。在此基础上数值模拟分析了水泥环厚度变化,套管水泥界面(Ⅰ界面)和水泥地层界面(Ⅱ界面)存在流体环等因素对接收回波的影响。数值模拟了完全胶结情况下地层参数变化对超声脉冲回波测井接收信号的影响,接收回波后半段幅度随着地层声速及阻抗的增加而增加。数值模拟分析结果有助于对超声脉冲回波测井资料解释结果进行正确分析。
Abstract:
In order to get more accurate evaluation on cementing quality and casing condition using ultrasonic pulsed echo logging data, a model including 6 layers was established for numerical simulation and analysis of influencing factors on ultrasonic pulsed echo logging data. Inversion to the acoustic impedance of annulus medium and cased formation and the wall thickness of casing was carried out using the full wave data numerically simulated under the condition of full cementation. Then the thickness of cement ring, the fluid rings on casing cement interface(interface I)and formation cement interface(interface II)were numerically simulated to analyze how they influence echoes. In addition, the influences of formation parameters on echoes is simulated numerically. The amplitude of the second half of the received echo increases with the increase of acoustic velocity and impedance. The results of numerical simulation provide useful information to correct analysis of the interpretation results of ultrasonic pulse echo logging data.

参考文献/References:

[1] 刘继生, 谢荣华, 王兴国, 等. 工程测井在套管损坏检查与预防中的应用 [J]. 测井技术, 2002, 26(1): 68-73. [2] 乔文孝, 周家惠, 杜光升. 超声脉冲反射法评价第Ⅱ界面的模拟实验 [J]. 测井技术, 1996, 20(3): 192-196. [3] 丁燕, 乔文孝, 车小花. 固井水泥声阻抗对垂直入射超声脉冲反射波的影响 [J]. 测井技术, 2011, 35(1): 55-57. [4] 车小花, 乔文孝. 用超声脉冲反射谱评价圆管厚度的实验研究 [J]. 声学技术, 2003, 22(1): 14-17. [5] 姚贵锦, 王克协, 伍先运, 等. 超声反射法套管-地层环空间介质波阻抗反演方法与成像实例 [J]. 地球物理学报, 2005, 48(4): 959-968.

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备注/Memo

备注/Memo:
第一作者: 吕秀梅,女,1969年生,硕士,高级工程师,从事固井质量评价及套损检测预测等研究工作。E-mail:dlts_lvxm@petrochina.com.cn
更新日期/Last Update: 2019-08-30