地震反射层夹角外推法定量确定地层超覆线位置——以陈家庄凸起东段北部缓坡带馆下段为例
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摘要
陈家庄凸起东段北部缓坡带主要发育了馆下段地层超覆油气藏,因此准确确定地层超覆线位置对于指导油气勘探具有重要意义。基于前人研究成果,本文依据地层超覆线正演模拟结果的分析认为,地层超覆线附近的地震反射同相轴尖灭点位置受不整合面倾角、地层倾角等因素的控制,沿着地震反射同相轴的变化趋势外推可定量确定地层超覆点的位置。该方法用于陈家庄凸起东段北部缓坡带馆下段超覆油气藏勘探,取得了满意效果。
Low Eg stratigraphic overlap reservoir is developed in northern gentle slope zone of east part of Chenjiazhuang salient, therefore, accurately determining the position of stratigraphic overlap line has important meaning to guide petroleum prospecting. Based on the studied results of predecessors and analyzing the results of forward simulation of stratigraphic overlap line, the paper considered that the factors such as angle of unconformity and stratigraphic angle control the position of pinchout point of seismic reflection events near the stratigraphic overlap line. Extrapolating the changing trends of seismic reflection events can quantitatively determine the position of stratigraphic overlap line. The method was used for the low Eg overlap reservoir exploration in northern gentle slope zone of eastern part of Chenjiazhuang salient.
Low Eg stratigraphic overlap reservoir is developed in northern gentle slope zone of east part of Chenjiazhuang salient, therefore, accurately determining the position of stratigraphic overlap line has important meaning to guide petroleum prospecting. Based on the studied results of predecessors and analyzing the results of forward simulation of stratigraphic overlap line, the paper considered that the factors such as angle of unconformity and stratigraphic angle control the position of pinchout point of seismic reflection events near the stratigraphic overlap line. Extrapolating the changing trends of seismic reflection events can quantitatively determine the position of stratigraphic overlap line. The method was used for the low Eg overlap reservoir exploration in northern gentle slope zone of eastern part of Chenjiazhuang salient.
引文
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[2]江涛,苗洪波,王芳等.松辽盆地西部盆缘带地层超覆油藏形成条件.大庆石油地质与开发,2005,25(4):24~26
[3]张营革,田建华.沾车地区馆陶组地层超覆油藏地震描述技术应用及效果分析.石油物探,2003,42(3):322~327
[4]钟广法,周祖翼,耿建华.有效厚度拟合定量恢复原始地层超覆点位置.沉积学报,1991,21(4):614~618
[5]周卫红,谢风猛,刘健.东营凹陷西北部地层超覆油藏勘探技术研究.承德石油高等专科学校学报,2005,7(3):23~26
[6]王章青,杨立战,林胜春.地震综合解释技术在地层超覆圈闭研究中的应用.江汉石油学院学报,2003,25(2):60~61
[7]谢风猛,李彦强.滨南油区地层超覆油藏的勘探.油气地质与采收率,2004,11(6):27~28
[8]胡玉双,李黎明.层序地层学在松辽东部断陷有利勘探区带预测中的应用.大庆石油地质与开发,1999,18(2):10~12
[9]王卫红,姜在兴,操应长.测井曲线在识别陈家庄凸起北部缓坡带层序边界中的应用.江汉石油学院学报,2003,25(1):63~64
[10]姜岩,李文艳,叶萍.基于正演模拟的地震反射特征主要影响因素分析.大庆石油地质与开发,2006,25(5):10~102
[11]马中高,管路平,贺振华等.利用模型正演优选地震属性进行储层预测.石油学报,2006,24(6):35~39
[12]董守华,马彦良,周明.煤层厚度与振幅、频率地震属性的正演模拟.中国矿业大学学报,2004,33(1):29~32
[13]杨占龙,陈启林,郭精义等.模型正演与地震资料品质分析——以吐哈盆地葡北地区为例.天然气地球科学,16(5):641~672
[14]卫延召,冯江,宋海明等.陕甘宁盆地鄂拖克旗地区奥陶系风化壳的地震正演模拟.沉积学报,1999,17(增刊):734~741
[15]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.石油地球物理勘探,2006,41(5):561~572
[16]王德志,贾烈明,刘学伟等.正演模拟技术在沁阳凹陷南部陡坡带三维地震采集中的应用.河南石油,2003,17(5):18~20
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