针对VSP资料层位标定过程中存在的多解性和局限性的问题,提出基于VSP资料的地震层位综合标定方法,具体思路为:1采集VSP资料,包括VSP同步伽马测井资料;2VSP资料处理和质控,确保深度域的VSP走廊叠加剖面与合成记录波组一致;3利用VSP时深关系校正声波时深关系得到更加准确可靠的声波合成记录;4极性确定,绝对振幅显示标定和求取互相关系数,确定标定位置和极性;5VSP走廊叠加和校正后合成记录同时镶嵌于过井地震剖面完成层位标定。该方法用于苏里格南气田,取得了较好的地质效果。
Abstract
In this paper,we analyze problems in conventional VSP calibration,and propose a new seismic calibration based on VSP data. The steps are as follows:①VSP and synchronous gamma-ray logging data acquisition; ②VSP data processing and quality control to insure the consistence between VSP corridor stack section and synthetic seismogram in the depth domain; ③Using VSP time-depth relationship corrects acoustic curves and improves synthetic seismogram; ④Absolute amplitude display calibration and cross-correlation parameter calculation to determine the calibration position and polarity; ⑤VSP corridor stack and corrected seismogram embedded at well locations in seismic sections. This approach is used in the exploration and development of South Sulige gas fields,and achieved satisfactory results.
关键词
层位标定 /
伽马 /
VSP /
合成记录
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Key words
VSP /
synthetic seismogram /
horizon calibration /
gamma-ray logging
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中图分类号:
P631
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参考文献
[1] 王轶. 地震层位标定方法综述及应用. 重庆科技学院学报(自然科学版),2011,13(1):40-42.
Wang Yi. Summarize and practice of seismic horizon calibration method. Journal of Chongqing University of Science and Technology (Nature Sciences Edition), 2011, 13(1):40-42.
[2] 张永华,陈萍,赵雨晴等. 基于合成记录的综合层位标定技术. 石油地球物理勘探,2004,39(1):92-96.
Zhang Yonghua, Chen Ping, Zhao Yuqing et al.Integrative layer-labeling technique based on synthetic seismogram.OGP, 2004,39(1):92-96.
[3] 陆基孟. 地震勘探原理. 北京:石油工业出版社,1982.
[4] 朱光明.垂直地震剖面法.北京:石油工业出版社,1988.
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脚注
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