松辽盆地西斜坡构造运动强度与油气运移
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摘要
在研究构造运动影响油气运移机理的基础上,采用分形理论以及地形斜率变化数值方法,定量分析了松辽盆地西斜坡区主力输导层断裂活动强度以及地层变形程度,找出了构造活动剧烈的地区。在此基础上应用“地震泵”理论,探讨了构造运动强度促进油气运移的部位,并对西斜坡地区的油气分布特征进行了分析。研究结果显示,平面上泰康隆起带上的构造运动相对强变形区控制了西斜坡区油气的分布;纵向上高台子油层比萨尔图油层经历了更为剧烈的构造变动,由此造成大量油气通过纵向穿层运移进入萨尔图油层。
Based on study of the mechanism that tectonic movement influence hydrocarbon migration, the faulting intensity and the deformation of the main carrier beds in the western slope zone in the Songliao basin are quantitatively analyzed by using the fractal theory and the numerical method of topographic gradient variation, and the areas of strong tectonic movement are delineated. The locations where tectonic intensity might have improved hydrocarbon migration are further studied by using the theory of “seismic pumping” and the characteristics of oil/gas distribution in the western slope zone are analyzed. The following understandings are achieved through study. Laterally, the relative strong tectonic deformation areas in Taikang uplift zone would have controlled the oil/gas distribution in the western slope zone; whereas vertically, the Gaotaizi reservoir would have experienced stronger tectonic movements than the Saertu reservoir, as a result, large amount of hydrocarbons would have entered into the Sa'ertu reservoir through vertical transformational migration.
Based on study of the mechanism that tectonic movement influence hydrocarbon migration, the faulting intensity and the deformation of the main carrier beds in the western slope zone in the Songliao basin are quantitatively analyzed by using the fractal theory and the numerical method of topographic gradient variation, and the areas of strong tectonic movement are delineated. The locations where tectonic intensity might have improved hydrocarbon migration are further studied by using the theory of “seismic pumping” and the characteristics of oil/gas distribution in the western slope zone are analyzed. The following understandings are achieved through study. Laterally, the relative strong tectonic deformation areas in Taikang uplift zone would have controlled the oil/gas distribution in the western slope zone; whereas vertically, the Gaotaizi reservoir would have experienced stronger tectonic movements than the Saertu reservoir, as a result, large amount of hydrocarbons would have entered into the Sa'ertu reservoir through vertical transformational migration.
引文
吕延防等,松辽盆地北部西部斜坡区构造特征及勘探目标评价,大庆石油学院,2004。
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[1]中国石油地质志编写组.中国石油地质志(第2卷)[M].北京:石油工业出版社,1987:391400.
[2]科斯特罗夫BЪ.构造地震震源力学[M].北京:地震出版社,1979:2038.
[3]张裕明,吴绪满.根据活断层长度、盆地面积估计最大震级———以华北为例[M]∥国家地震局地质研究所.现代地壳运动研究.北京:地震出版社,1987:103109.
[4]周友华.地震孕育机制与破裂机制的研究[J].地球科学进展,2000:637643.
[5]吴起林,刘安捷.海城、唐山两大地震前后油井生产动态的变化[J].地震学报,1983,5(4):461465.
[6]李富.试论地下流体前兆复杂性及其机制[J].地震研究,2002,25(1):3641.
[7]陆廷清,苏培东,常健民,等.负压空吸作用是油气藏的成藏机制之一[J].石油勘探与开发,2003,30(5):116118.
[8]SIBSONRH,etal.Seismicpumping ahydrothermal fluidtransportmechanism[J].Jour.Geol.Sci,1975,131(6):653660.
[9]HOOPERECD.Fluidmigrationalonggrowthfaultsin compactingSediments[J].Jour.Petrol.Geol,1991,4(2):161180.
[10]华保钦.构造应力场、地震泵和油气运移[J].沉积学报,1995,13(2):7785.
[11]陈运平,席道瑛,樊星.用分形理论研究海南岛的活动断裂[J].地震研究,2002,25(4):351355.
[12]金章东,卢新卫,张传林.江西德兴斑岩铜矿田断裂分形研究[J].地质论评,1998,44(1):5762.
[13]孙凡臣,丁国瑜.线性构造分数维值含义[J].地震,1991(5):3337.
[14]藤田至则,铃木尉元.构造、地震、地壳运动[M].北京:地质出版社,1988:139143.
[15]MITASOVAH,JAROSALAVHOFIERKA.Interpo lationbyregularizedsplinewithtension:Ⅱ.application toterrainmodelingandsurfacegeometryanalysis[J].MathematicalGeology,1993,25(6):657669.
[16]MOOREID,LEWISA,GALLANTJC.Terrain properties:EstimationMethodsandScaleEffects[A].ModelingChangeinEnvironmentalSystems[C].Jake manAJ,etal.JohnWileyandSons,1993,NewYork.
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