开发地震在T2×1区块储层横向预测中的应用
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摘要
充分结合已有的钴井、测井等信息，合理应用开发地震，查清T2×1区块的构造细节、储集体几何形态、油气分布规律是在该区滚动开发中急需解决的问题。本文首先从建立三维空变速度场、进行测井曲线与合成记录和地震道对比、测并约束反演入手，利用由不同处理方法获得的高、低频偏移成果数据体，进行精细构造解释，采用变速时深转换成图法，得到高精度的构造图；然后利用对油气反映敏感的8种地震特征参数进行油气检测。最后综合考虑构造、储层、油气检测等方面的因素，部署开发并。经三口井证实，最大误差为11m，最小误差为3m。
To ascertain the structural details, reservoir geometry, regular hydrocarbon distribution in T2×1 region by not only using the drilling and log data but also doing reasonable development seismic exploration is an important matter which we must achieve in rolling exploration in the region. Horizontal reservoir prediction in this region has been finished in following steps. Preliminary work was conducted, which included the construction of 3-D velocity field, the comparison between log curve and synthetic seismogram (or seismic traces ), and log-restricted inversion. The migrated data volumes of high and low frequency seismic data were produced by taking different processing methods, and they were used in detailed structure interpretation. Accurate structural map was drawn after time-depth conversion using varying velocity.Hydrocarbon prediction was done by introducing 8 kinds of seismic characteristic parameters which are sensitive to hydrocarbon existence.Development boreholes were designed by overall considerations of some factors in structure, reservoir, hydrocarbon prediction and so on.Prediction result was checked by three boreholes, which found maximum error of 11m and minimum error of 3m.
To ascertain the structural details, reservoir geometry, regular hydrocarbon distribution in T2×1 region by not only using the drilling and log data but also doing reasonable development seismic exploration is an important matter which we must achieve in rolling exploration in the region. Horizontal reservoir prediction in this region has been finished in following steps. Preliminary work was conducted, which included the construction of 3-D velocity field, the comparison between log curve and synthetic seismogram (or seismic traces ), and log-restricted inversion. The migrated data volumes of high and low frequency seismic data were produced by taking different processing methods, and they were used in detailed structure interpretation. Accurate structural map was drawn after time-depth conversion using varying velocity.Hydrocarbon prediction was done by introducing 8 kinds of seismic characteristic parameters which are sensitive to hydrocarbon existence.Development boreholes were designed by overall considerations of some factors in structure, reservoir, hydrocarbon prediction and so on.Prediction result was checked by three boreholes, which found maximum error of 11m and minimum error of 3m.
引文
1姚逢昌等.横向预测技术在储层研究中的应用.石油地球物理勘探,1991,26(1):24～35
2刘企英等.利用地震信息进行油气检测,石油工业出版社,1994
3田玉清.柏各庄潜山村造带后2×1区块储层预测,勘探开发研究,1994
4赵宝银.柏各庄地区三维地震资料解释成果报告,1997
5 Sheriff R E.Reservoir Geophysics.Investigation in Geophysics,SEG,1993,No.7
2刘企英等.利用地震信息进行油气检测,石油工业出版社,1994
3田玉清.柏各庄潜山村造带后2×1区块储层预测,勘探开发研究,1994
4赵宝银.柏各庄地区三维地震资料解释成果报告,1997
5 Sheriff R E.Reservoir Geophysics.Investigation in Geophysics,SEG,1993,No.7
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