定量确定地层超覆线位置的地震反射夹角外推法
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摘要
陈家庄凸起东段北部缓坡带主要发育馆下段地层超覆油气藏,准确确定地层超覆线位置对于指导该区油气勘探具有重要意义。根据研究区勘探现状、地层结构特征及对古地貌的认识对地层超覆油藏进行了正演模拟,结果表明,在地层超覆线附近的地震反射同相轴上,尖灭点位置受不整合面倾角和地层倾角等因素控制,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。将此方法应用于研究区馆下段地层超覆油气藏勘探,得到垦68井-垦69井在馆下段2+3砂组连片含油的结论。
Stratigraphic overlapped reservoirs are well developed in Guantao Formation in northern slope of the Eastern Chenjiazhuang Uplift.The position of overlap line is vital for guidance of exploration for oil and gas in this area.Forward modeling was carried out under the constraint of stratigraphic configuration and palaeogeomorphologic characters.It is showed that near overlapped points,pinchout is mainly controlled by unconformity dip and stratal dip,and the position of overlap line can be determined quantitatively by extrapolating along seismic event.By applying this method to the overlapped reservoirs of Guantao Formation in northern slope of the Eastern Chenjiazhuang Uplift,we concluded that the 2+3 sands in the lower segment of Guantao Formation are connected and oil-bearing between well K68 and K69.
Stratigraphic overlapped reservoirs are well developed in Guantao Formation in northern slope of the Eastern Chenjiazhuang Uplift.The position of overlap line is vital for guidance of exploration for oil and gas in this area.Forward modeling was carried out under the constraint of stratigraphic configuration and palaeogeomorphologic characters.It is showed that near overlapped points,pinchout is mainly controlled by unconformity dip and stratal dip,and the position of overlap line can be determined quantitatively by extrapolating along seismic event.By applying this method to the overlapped reservoirs of Guantao Formation in northern slope of the Eastern Chenjiazhuang Uplift,we concluded that the 2+3 sands in the lower segment of Guantao Formation are connected and oil-bearing between well K68 and K69.
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[J].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[J].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[J].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[J].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[J].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[J].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[J].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[J].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[J].大庆石油地质与开发,2006,25(5):100~102
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[J].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[J].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[J].天然气地球科学,2005,16(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[J].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[J].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[J].河南石油,2003,17(5):18~20
17曹务祥,王彦鹃.利用正演模拟指导速度谱解释[J].勘探地球物理进展,2006,29(6):398~401
18王润秋,张明,费建博,等.精细积分法三维地震波正演模拟[J].勘探地球物理进展,2006,29(6):394~397
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