模型正演技术在阿姆河右岸综合解释中的应用
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摘要
针对阿姆河右岸目的层地层标定追踪困难、石膏受挤压严重变形影响目的层成像和储层地震响应特征认识不清等现状,为减少解释的多解性,文章以沉积、构造和储层等地质理论知识为指导,重点分析了阿姆河右岸地区目的层地层与上覆地层接触和组合关系。设计了研究区A区与B区坡折带相变区,B区中石膏受挤压变形和储层发育在碳酸盐岩垂向上不同部位3类地质模型。并应用波动方程进行了正演模拟,总结了各类模型的地震响应特征,为坡折带相变区的层位标定追踪提供了依据,指出了盐下部分断裂假象可能是中石膏变形引起,阐述了储层发育在碳酸盐岩垂向上不同地震响应特征。对该地区勘探生产具有一定的指导作用。
Based on the current problems of difficult stratum calibration and difficult target tracking,target bed imaging seriously affected by the extrusion-deformed gypsum rocks,and no sufficient understanding of the seismic response features,at the right bank of Armu Darya,in order to reduce the multiple-solution interpretation,this paper takes geologic theories of sedimentation,structures and reservoirs as the guideline to analyze the contact and conformity between the target bed and the overlying strata.3 geological models are set up for slope break transformation areas at area A and B,the extrusion-deformed gypsum at area B,and the reservoirs developed at different vertical parts of carbonate rocks.And wave equation is used to do forward modeling,with seismic response features of each model summarized.It will be the basis for stratum calibration and tracking at slope break transformation area.And it is pointed out herein that the pseudomorphous subsalt fracture is probably caused by the deformation the gypsum and the seismic response features vary along the vertical direction of the reservoir-developed carbonate rocks.This study will be significant for the exploration and development in this area.
Based on the current problems of difficult stratum calibration and difficult target tracking,target bed imaging seriously affected by the extrusion-deformed gypsum rocks,and no sufficient understanding of the seismic response features,at the right bank of Armu Darya,in order to reduce the multiple-solution interpretation,this paper takes geologic theories of sedimentation,structures and reservoirs as the guideline to analyze the contact and conformity between the target bed and the overlying strata.3 geological models are set up for slope break transformation areas at area A and B,the extrusion-deformed gypsum at area B,and the reservoirs developed at different vertical parts of carbonate rocks.And wave equation is used to do forward modeling,with seismic response features of each model summarized.It will be the basis for stratum calibration and tracking at slope break transformation area.And it is pointed out herein that the pseudomorphous subsalt fracture is probably caused by the deformation the gypsum and the seismic response features vary along the vertical direction of the reservoir-developed carbonate rocks.This study will be significant for the exploration and development in this area.
引文
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[2]王志美,畅永刚,等,射线追踪与波动方程正演模拟方法对比研究[J].工业技术,2007,(04):47-48.
[3]杜正聪,贺振华,黄德济,等.缝洞模型波动方程正演与偏移[J].成都理工大学学报(自然科学版),2003,30(4):386-478.
[4]张春雷,王新民,等.鄂尔多斯盆地姬塬地区延长组地质模型地震正演研究[J].石油天然气学报(江汉石油学院学报),2008,30(6):258-260.
[5]季玉新,韩文功,沈财余,等.胜利油田典型地质模型的地震正演[J].石油地球物理勘探,2006,41(5):561-572.
[6]宋建国,刘励云,周廷全.陡坡带复杂地质模型的建立[J].石油地球物理勘探,2008,43(4):473-478.
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