模型反演方法及其在温西六东块的应用
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摘要
为适应台北凹陷油气勘探地质目标复杂化研究的需求,针对台北凹陷波阻抗难以划分砂泥岩的特点,综合地震、测井、地质等多学科的储层反演方法已突破波阻抗反演思路,实质性地进入阻抗与非阻抗反演并重阶段。模型反演技术首先通过合理的地质模型建立,做主组分分析得到初始权,然后利用模型估算技术修改权系数,最终内插出能反映储层地层特征信息的资料。分析表明,利用该技术能反演自然电位、电阻率等曲线,可以较有效地解决台北凹陷高波阻抗泥岩干扰条件下渗透性砂岩识别的难题。实例应用中,模型反演为温西六东块油藏的勘探开发提供了重要的参考资料,成为吐哈构造—岩性油气藏勘探的成功范例。
To meet the requirement of exploring complex geologic target in Taibei sag, reservoir inverse modeling integrating seismic, logging and geology has broken wave impedance thought, laying equal stress on impedance inversion and non-impedance inversion. To carry out inverse modeling, first a reasonable geologic model is established, and main components are analyzed to obtain initial weight; then model estimation is used to modify weight factor; finally data reflecting reservoir characteristics is interpolated. This technique is fairly effective in recognizing permeable sandstone under disturbance of high wave impedance mudstone in Taibei sag.
To meet the requirement of exploring complex geologic target in Taibei sag, reservoir inverse modeling integrating seismic, logging and geology has broken wave impedance thought, laying equal stress on impedance inversion and non-impedance inversion. To carry out inverse modeling, first a reasonable geologic model is established, and main components are analyzed to obtain initial weight; then model estimation is used to modify weight factor; finally data reflecting reservoir characteristics is interpolated. This technique is fairly effective in recognizing permeable sandstone under disturbance of high wave impedance mudstone in Taibei sag.
引文
[1] Jason软件用户手册.
[2] 刘雯林.油气田开发地震技术[M].北京:石油工业出版社,1996．
[3] 李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1993．
[2] 刘雯林.油气田开发地震技术[M].北京:石油工业出版社,1996．
[3] 李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1993．
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