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板桥凹陷断控重力流沉积特征及沉积模式 总被引:1,自引:0,他引:1
综合利用岩心、测井及地震等资料,对板桥凹陷A井区沙一段下亚段进行了深入研究。A井区沙一段下亚段砂岩段为湖底扇的重力流沉积,断裂对重力流的发育起到了主控作用。断裂不仅为重力流提供了沉积空间,更重要的是当沉积空间不足以容纳重力流沉积时,它对重力流起到了阻挡乍用,使重力流砂体展布方向由北北东向转为北东东向。建立了发育于斜坡且由主控断层控制的重力流沉积模式,该模式将为板桥凹陷隐蔽圈闭油气藏的寻找和评价提供依据。 相似文献
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廖远涛 《新疆石油学院学报》2002,14(2):32-35
渤海海盆地新港探区位于黄骅坳陷北部,占据北塘凹陷主体,在区域构造上位于新港构造带,为坡口,北塘有南堡三大凹陷所环抱,成油条件优越,是大港探区十分重要的找油区域。本文利用Fillippone经验公式法结合地震速度资料,对该区西部的地层压力和流体势进行了预测。预测结果表明:(1)探区西部的压力分布模式不同于Hunt(1990)的标准压力仓模式;(2)探区西部Es3及Es2-d在全区超压峰值最同且分布稳定,可能为该区主要的油源层段;(3)探区西部海河断层上升盘的异常压力在Es3层段具有极高值,说明该构造具有良好的油气聚集条件。 相似文献
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伸展构造体系中传递带的控砂作用——储层预测的新思路 总被引:7,自引:1,他引:7
断陷盆地中常见横向凸起、走向斜坡两种典型传递带类型,与之对应的断层下降盘普遍发育大型扇三角洲或浊积扇砂体,其控砂作用的机制在于同沉积断裂活动导致的古地貌差异,尤其是传递带断层下盘的古地貌低地对物源供给水系起着汇聚和引导作用.此外,在盆地中央的大型纵向隆起带上发育的反向平行型传递带,其形成的断沟、断槽常常成为沉积物轴向输送的通道. 相似文献
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The purpose of this study is to forecast the profitable oil and gas reservoir,which is the key of finding hydrocarbon,based on the conception of special geologic bodies.With the guiding methodology of the research thinking of integration of point-line-surface by using the methods and techniques of logging,seismic,seismic attribute,and logging constrained inversion in 3D data volume,the special geologic bodies of Member 3 of Dongying Formation in Littoral Slope Zone of Qikou Sag,which has important hydrocarb... 相似文献
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Recognition and depiction of special geologic bodies of Member 3 of Dongying Formation in Littoral Slope Zone, Qikou Sag 总被引:1,自引:0,他引:1
The purpose of this study is to forecast the profitable oil and gas reservoir, which is the key of finding hydrocarbon, based
on the conception of special geologic bodies. With the guiding methodology of the research thinking of integration of point-line-surface
by using the methods and techniques of logging, seismic, seismic attribute, and logging constrained inversion in 3D data volume,
the special geologic bodies of Member 3 of Dongying Formation in Littoral Slope Zone of Qikou Sag, which has important hydrocarbon
exploration potential, are recognized and described under the constraint of sequence stratigraphic framework. As a result,
the developed scale, geometric shape and space distribution feature of the special geologic bodies are forecasted; the inner
structure and sequence structure patterns of the geologic bodies are also ascertained. From the lowstand system tract (LST)
and lacustrine expanding system tract (EST) to the highstand system tract (HST), the geologic bodies have evolved from relative
centralization of lake basin reducing period to three relative dispersive isolated parts of broad lake basin period. According
to the relevance and regularity of the development of geologic bodies, the conclusions can be obtained that three types of
potential profitable reservoir traps, including the lithologic lens traps, lithologic updip pinchout traps and structural-lithologic
composite traps, are forecasted. In addition, scientific basis for further hydrocarbon exploration in new area (few-well area
and no-well area) is offered in the guidance of sequence stratigraphic model. 相似文献
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局部的勘探实践表明北塘凹陷沙河街组是重要的油气勘探层系。但大面积地区,尤其是深凹区钻井很少,故开展地震相分析十分必要。依据北塘凹陷沙河街组可信度较高的地震内部反射结构和外部形态,结合振幅、连续性、频率等地震反射参数,对凹陷内地震相进行了分析,共识别出6种地震相,即:席状地震相、丘形地震相、下切充填地震相、透镜状地震相、楔形地震相和前积地震相。结合钻井资料和区域构造背景,分析了地震相的平面展布特征,并把地震相转化为沉积相,结果表明发育的沉积相类型有扇三角洲相、湖泊相和浊积扇相,为该区的砂体展布及其预测提供了重要的依据。 相似文献