不同胶结情况下套管井中声场激发谱的研究

不同胶结情况下套管井中声场激发谱的研究

杨大军^1,2,王祝文¹

1.吉林大学地球探测科学与技术学院，长春 130026;2.大庆石油管理局测井公司，黑龙江大庆 163412

收稿日期:2005-03-19 修回日期:1900-01-01 出版日期:2006-01-26 发布日期:2006-01-26
通讯作者: 杨大军

Study of the Excited Acoustic Spectroscopy in Cased Hole under Different Bonded Conditions

YANG Da-jun^1，2, WANG Zhu-wen¹

1.College of GeoExploration Science & Technology, Jilin University, Changchun 130026,China;2.Welllogging Company, Daqing Petroleum Administration, Daqing，Heilongjiang 163412,China

Received:2005-03-19 Revised:1900-01-01 Online:2006-01-26 Published:2006-01-26
Contact: YANG Da-jun

摘要/Abstract

摘要： 采用实轴积分法计算套管刻度井中的声场激发谱，分析了第一、第二界面的胶结情况以及模拟地层的厚度等对井内声场的影响。数值结果显示：在套管刻度井中，模拟地层厚度的增大或第一、第二界面的胶结状况变差，该地层的外边界对井中激发谱的影响变小，在低频（小于3 kHz）情况下，当外边界半径大于0.2 m时，不管第一、第二界面胶结状况如何，该边界面对井中激发谱的影响基本可以忽略；在设计套管刻度井时，为减小模拟地层的外边界对井内声场的影响，既要考虑不同胶结情况下模拟地层的厚度问题，还应考虑声源测量频率的影响问题。

关键词: 胶结, 套管井, 激发谱

Abstract: The excited acoustic spectroscopy (EAS) in cased calibration hole is calculated with the realaxis integral method. The effect on acoustic field in the hole from varied bondedconditions at the first and second interface and the thickness of the modeling formation is analyzed. The numerical results show that the effect of the outmost boundary of the formation on the EAS in the hole decreases with the increase of the formation thickness or with the deterioration of the two bonded interfaces. At low frequencies(less than 3 kHz), the outmost formationboundary have little effect on the EAS, when the radius of this boundary is great than 0.2 m, while effect from the two bonded interfaces can be ignored. In order to decrease the effect on the acoustic field from the artificial formation boundary in the calibration hole, not only the thickness of the modeling formation under different bonded conditions but also the measuring frequency of the source should be considered carefully when the authors design a cased calibration hole.

Key words: cementation, cased calibration hole, excited acoustic spectroscopy

中图分类号:

P631.814

杨大军,王祝文. 不同胶结情况下套管井中声场激发谱的研究[J]. J4, 2006, 36(01): 132-0136.

YANG Da-jun, WANG Zhu-wen. Study of the Excited Acoustic Spectroscopy in Cased Hole under Different Bonded Conditions[J]. J4, 2006, 36(01): 132-0136.

参考文献

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