谱分解技术在营尔凹陷长沙岭地区薄储层预测中的应用
|
摘要
谱分解技术就是通过对地震道进行特定的数学变换,形成相应的地震数据体(调谐体和共频体),通过调谐体和共频体的处理解释实现对特定地质目标的地质解释。本文针对营尔凹陷长沙岭构造带下沟组上段砂岩储层特点,采用谱分解薄层识别技术进行储层预测。实际应用时,利用沿层调谐体,确定了薄砂层调谐频率范围;利用共频体对薄层进行检测,预测了砂泥岩互层发育的三角洲、扇三角洲前缘砂体分布范围,预测结果与实际钻探情况较为吻合。
Spectral decomposition provides a novel means of utilizing seismic data and discrete Fourier transform(DFT) for imaging and mapping temporal bed thickness and geological discontinuities over large 3D seismic surveys.By transforming seismic data into frequency domain,processing and interpreting the tuning cube indicate lateral geologic discontinuities.This paper introduces reservoir prediction on upper Xiagou in Changshaling belt,Yinger depression with spectral decomposition.The frequency tuning range of thin sand is confirmed by tuning cube along the horizons.Delta sand body distribution and fan delta front sand body distribution are predicted to identify thin beds in practice and the predicted results coincide with the actual drilling data.Practical application results show spectral decomposition techniques are more accurate for thin sand bodies than the traditional full-band reservoir prediction.
Spectral decomposition provides a novel means of utilizing seismic data and discrete Fourier transform(DFT) for imaging and mapping temporal bed thickness and geological discontinuities over large 3D seismic surveys.By transforming seismic data into frequency domain,processing and interpreting the tuning cube indicate lateral geologic discontinuities.This paper introduces reservoir prediction on upper Xiagou in Changshaling belt,Yinger depression with spectral decomposition.The frequency tuning range of thin sand is confirmed by tuning cube along the horizons.Delta sand body distribution and fan delta front sand body distribution are predicted to identify thin beds in practice and the predicted results coincide with the actual drilling data.Practical application results show spectral decomposition techniques are more accurate for thin sand bodies than the traditional full-band reservoir prediction.
引文
[1]袁志云,孔令洪,王成林.频谱分解技术在储层预测中的应用.石油地球物理勘探,2006,41(增1):11～15Yuan Zhi-yun,Kong Ling-hong and Wang Cheng-lin.图5长2和长3区块下沟组上段高位域30Hz调谐振幅平面分布图Application of spectrum decomposition in reservoir pre-diction.OGP,2006,41(Sup 1):11～15
[2]张延庆,魏小东,王亚楠等.谱分解技术在QL油田小断层识别与解释中的应用.石油地球物理勘探,2006,41(5):584～586Zhang Yan-qing,Wei Xiao-dong,Wang Ya-nan et al.Application of spectral factorization in recognition andinterpretation of minor faults in QL oilfield.OGP,2006,41(5):584～586
[3]苏盛甫.薄储集层的反射特征和定量解释方法.石油地球物理勘探,1988,23(4):387～402Su Sheng-fu.Thin-reservoir reflection and the quanti-tative interpretation method.OGP,1988,23(4):387～402
[4]魏志平.谱分解调谐体技术在薄储层定量预测中的应用.石油地球物理勘探,2009,44(3):337～340Wei Zhi-ping.Application of spectrum-decompositiontuning body technique to quantitatively predict thinreservoir.OGP,2009,44(3):337～340
[5]王焕弟,牛滨华,任敦占等.隐蔽油气藏勘探现状与对策分析.石油地球物理勘探,2004,39(6):739～744Wang Huan-di,Niu Bin-hua,Ren Dun-zhan et al.Pres-ent conditions of subtle traps exploration and analysesof adapted measures.OGP,2004,39(6):739～744
[6]徐丽英,徐鸣洁,陈振岩.利用谱分解技术进行薄储层预测.石油地球物理勘探,2006,41(3):299～302Xu Li-ying,Xu Ming-jie,Chen Zhen-yan.Using spec-trum decomposition technique for prediction of thinreservoir.OGP,2006,41(3):299～302
[2]张延庆,魏小东,王亚楠等.谱分解技术在QL油田小断层识别与解释中的应用.石油地球物理勘探,2006,41(5):584～586Zhang Yan-qing,Wei Xiao-dong,Wang Ya-nan et al.Application of spectral factorization in recognition andinterpretation of minor faults in QL oilfield.OGP,2006,41(5):584～586
[3]苏盛甫.薄储集层的反射特征和定量解释方法.石油地球物理勘探,1988,23(4):387～402Su Sheng-fu.Thin-reservoir reflection and the quanti-tative interpretation method.OGP,1988,23(4):387～402
[4]魏志平.谱分解调谐体技术在薄储层定量预测中的应用.石油地球物理勘探,2009,44(3):337～340Wei Zhi-ping.Application of spectrum-decompositiontuning body technique to quantitatively predict thinreservoir.OGP,2009,44(3):337～340
[5]王焕弟,牛滨华,任敦占等.隐蔽油气藏勘探现状与对策分析.石油地球物理勘探,2004,39(6):739～744Wang Huan-di,Niu Bin-hua,Ren Dun-zhan et al.Pres-ent conditions of subtle traps exploration and analysesof adapted measures.OGP,2004,39(6):739～744
[6]徐丽英,徐鸣洁,陈振岩.利用谱分解技术进行薄储层预测.石油地球物理勘探,2006,41(3):299～302Xu Li-ying,Xu Ming-jie,Chen Zhen-yan.Using spec-trum decomposition technique for prediction of thinreservoir.OGP,2006,41(3):299～302
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