波阻抗反演在东胜煤田勘探中的应用
|
摘要
东胜煤田为陆相沉积煤田,具有含煤层数多、厚度不均、层间距不稳定等特点,勘探区内地震反射波追踪对比存在多解性,严重影响了煤层的追踪对比。为破解该难题,对东胜煤田地震勘探资料进行了以模型为基础的多井约束岩性宽带反演,即:利用该勘探区的地震数据资料、对煤层反射波解释层位、断层数据,结合测井数据、岩性柱状数据及其它地质资料,进行多井约束下的二维叠后反演,对所得到的反演数据体再依据反演原理,结合已知测井数据进行地震属性反演,最终得到能够反映岩性变化的波阻抗数据。对波阻抗反演数据进行煤层追踪对比解释,准确圈定出区内煤层的赋存范围,并合理解释了煤层分叉、合并、尖灭及厚度变化等地质现象,取得了较为可靠的地质成果。
The Dongsheng coalfield is a limnic coalfield with characteristics of multiple coal seams,uneven coal thickness,and uncertain coal seam intervals.Seismic reflection wave tracing and correlation in the prospecting area existed interpretation ambiguity,and seriously impacted coal seams tracing and correlation.To decipher this difficult problem,seismic data multihole constrained lithologic wideband inversion based on models were carried out,i.e.: by the use of seismic data,coal seam reflection interpreted horizon,fault data,logging data,lithologic column data,combined with geological data carry out multihole constrained 2D poststack inversion,to use the inversed data volume combined with known logging data carry out seismic attribute inversion based on inversion principle,finally gained elastic impedance data can reflect lithologic changes.To use elastic impedance inversion data carry out coal seams tracing and correlation interpretation,correctly circled out coal seams hosting extent in the area,and reasonably interpreted geologic phenomena of coal seam splitting,merging,pinch-out and thickness changing,and gained rather reliable geological results.
The Dongsheng coalfield is a limnic coalfield with characteristics of multiple coal seams,uneven coal thickness,and uncertain coal seam intervals.Seismic reflection wave tracing and correlation in the prospecting area existed interpretation ambiguity,and seriously impacted coal seams tracing and correlation.To decipher this difficult problem,seismic data multihole constrained lithologic wideband inversion based on models were carried out,i.e.: by the use of seismic data,coal seam reflection interpreted horizon,fault data,logging data,lithologic column data,combined with geological data carry out multihole constrained 2D poststack inversion,to use the inversed data volume combined with known logging data carry out seismic attribute inversion based on inversion principle,finally gained elastic impedance data can reflect lithologic changes.To use elastic impedance inversion data carry out coal seams tracing and correlation interpretation,correctly circled out coal seams hosting extent in the area,and reasonably interpreted geologic phenomena of coal seam splitting,merging,pinch-out and thickness changing,and gained rather reliable geological results.
引文
[1]张永华,步清华,杨春峰,等.测井宽带约束反演技术在油藏描述中的应用[J].河南石油,1999,13(3):1～4.
[2]杨晓春,李小凡,张美根,等.地震波反演方法研究的某些进展及其数学基础[J].地球物理学进展,2001,16(4):96～109.
[3]杨文采.地球物理反演的理论与方法[M].北京:地质出版社,1997.
[4]曹柏如,张霖斌,等.波阻抗反演中的不确定性分析[J].地球物理学进展,2000,15(4):62～67.
[5]刘伊克,常旭,等.地震层析成像反演中解的定量评价及其应用[J].地球物理学报,2000,43(2):251～256.
[6]吴胜和,马晓芬,陈崇河,等.测井约束反演在高分辨率层序地层学中的应用[J].地层学杂志,2001,25(2):140～143,536地球物理学进展19卷.
[7]马劲风,王学军,钟俊,等.测井资料约束的波阻抗反演中的多解性问题[J].石油与天然气地质,1999,20(1):7～10.
[8]范祯祥,郑仙种,范书蕊,等.利用地震、测井资料联合反演储层物性参数[J].石油地球物理勘探,1998,33(1):38～53.
[9]李庆忠.论地震约束反演的策略[J].石油地球物理勘探,1998,33(4):423-438.
[10]马国东.波阻抗处理技术研究及应用[J].中国煤田地质,2001,13(2).
[11]林建东,霍全明,吴奕峰.多井约束三维地震反演技术在煤厚预测中的应用[J].中国煤田地质,2003,15(3).
[12]许崇宝,刘东源.小波边缘分析建模波阻抗反演方法在煤层解释中的应用[J].中国煤炭地质,2008,20(2).
[13]刘伍,崔若飞.波阻抗反演技术在煤层地震勘探中的应用[J].中国煤炭地质,2008,20(6).
[14]孟宪民,蒋维平.波阻抗反演技术及其应用效果[J].中国煤炭地质,2007,19(01).
[2]杨晓春,李小凡,张美根,等.地震波反演方法研究的某些进展及其数学基础[J].地球物理学进展,2001,16(4):96～109.
[3]杨文采.地球物理反演的理论与方法[M].北京:地质出版社,1997.
[4]曹柏如,张霖斌,等.波阻抗反演中的不确定性分析[J].地球物理学进展,2000,15(4):62～67.
[5]刘伊克,常旭,等.地震层析成像反演中解的定量评价及其应用[J].地球物理学报,2000,43(2):251～256.
[6]吴胜和,马晓芬,陈崇河,等.测井约束反演在高分辨率层序地层学中的应用[J].地层学杂志,2001,25(2):140～143,536地球物理学进展19卷.
[7]马劲风,王学军,钟俊,等.测井资料约束的波阻抗反演中的多解性问题[J].石油与天然气地质,1999,20(1):7～10.
[8]范祯祥,郑仙种,范书蕊,等.利用地震、测井资料联合反演储层物性参数[J].石油地球物理勘探,1998,33(1):38～53.
[9]李庆忠.论地震约束反演的策略[J].石油地球物理勘探,1998,33(4):423-438.
[10]马国东.波阻抗处理技术研究及应用[J].中国煤田地质,2001,13(2).
[11]林建东,霍全明,吴奕峰.多井约束三维地震反演技术在煤厚预测中的应用[J].中国煤田地质,2003,15(3).
[12]许崇宝,刘东源.小波边缘分析建模波阻抗反演方法在煤层解释中的应用[J].中国煤炭地质,2008,20(2).
[13]刘伍,崔若飞.波阻抗反演技术在煤层地震勘探中的应用[J].中国煤炭地质,2008,20(6).
[14]孟宪民,蒋维平.波阻抗反演技术及其应用效果[J].中国煤炭地质,2007,19(01).
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心