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胜利油田盐家地区井间地震资料应用研究
石油物探
2005年 44卷 第No. 4期
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Title
Application of seismic crosswell data in Yanjia area
单位
1. 中国石化胜利油田有限公司物探研究院,山东东营 257022;2. 石油大学(华东),山东东营 257062
Organization
Geophysical Research Institute. SINOPEC Shengli Oilfield Company Limited, Dongying 257022,China
摘要
胜利油田有丰富的井间地震资料,但在地震勘探开发中如何很好地利用这些资料,有效地指导生产实践, 对资料可靠性和精确度的评价分析非常重要。为此,在胜利油田盐家地区开展了井间地震资料分析及解释方法研究。首先利用井点平均速度分析、井点层速度分析以及层析速度剖面形态分析等手段对井间层析速度的品质进行了讨论,认为层析速度不能很好地反映地层的岩性;然后利用频谱分析和反射特征分析等手段,对井间地震资料进行了评价,认为井间地震资料品质较高,但在能量和频率均衡等方面还存在一些问题;探讨了井间地震资料的深时转换问题,并利用测井约束反演获得了品质较高的波阻抗剖面;最后利用井间地震资料的解释结果并结合三维地震资料对盐家地区开发调整方案中的井位设计提出了建议。
Abstract
Seismic crosswell survey was developed in several areas of Shengli Oilfield. Comparing the well log velocity with tomographic velocity, analyzing the character of reflection wave, and contrast conventional 3-D seismic data to seismic crosswell data in Yanjia area. Then with estimated cross-well seismic data by frequency spectrum and reflection feature analysis. Through the corsswell seismic data have high quality, but still be a few problem on the energy and frequency balance. Research to time-depth conversion and well log constrained inversion, gained the wave impedance section for high quality. Analysis and interpretation results as well as crosswell seismic data provide the proposition with location design in Yanjia area.
关键词：
井间地震;
层析速度;
层速度;
平均速度;
深时转换;
频谱分析;
反射特征分析;
测井约束反演;
波阻抗剖面;
Keywords:
crosswell seismic;
tomographic velocity;
interval velocity;
average velocity;
time-depth conversion;
spectrum analysis;
reflectance signature analysis;
well log constrained inversion;
wave impedance section;
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