泌阳凹陷毕店地区核三段湖底扇与重力流沉积
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摘要
毕店地区处于泌阳凹陷中部,属于深水沉积区,含砂率多数在20%。该区核桃园组三段Ⅲ~Ⅵ砂组可识别出湖泊相和湖底扇相,具有较为典型的重力流沉积特征。在取心井段中可寻找到液化流、滑塌、拉裂与掉落岩块的滑动证据;此外,发育砂纹层理、泄水沟构造及渫状构造,后二者见于鲍玛序列C段,它们和砂纹层理伴生,这些岩块的上下层均为鲍玛BE段组合的浊积岩所构成的平整岩层。层拉平的地震剖面也表明核三段Ⅳ砂组中的平行、亚平行地震相之间夹有透镜状或波状、眼球状反射结构,平行、亚平行反射解释为深水背景泥沉积,而波状与眼球状反射为典型的湖底扇。
Located in middle Biyang sag, the Bidian area is a deep-water deposition area with sand-bearing ratios being mostly 20%. There exist typical sedimentary gravity flows in the Bidian area, and two kinds of facies, i.e., lacustrine facies and sublacustrine fan facies, were identified in Ⅲ～Ⅳ sand-bed sets of 3rd Member of Hetaoyuan Formation. Sliding evidence of fluidized flows, slips, pull-apart and drop-down rock masses could be found from well cores. In addition, ripple cross laminations, water-escaping structure and dish-shaped structure also grew, with the last two phenomena developed in the Bouma sequence of C segment, in association with the ripple cross laminations. Flat and conformable beds formed by turbidites of Bouma BE segments are seen above and below the rock masses. The layer-flattening seismic profiles also show that, before the deposition of the second sand-bed set of 3rd Member of Hetaoyuan Formation, there existed parallel and sub-parallel seismic reflections interbedded with lentoid or wavy, eyeball-shaped textures. It is held that the parallel and sub-parallel textures probably represent background sediments of deep-water mudstones, whereas the wavy and eyeball-shaped textures represent typical sublacustrine fans.
Located in middle Biyang sag, the Bidian area is a deep-water deposition area with sand-bearing ratios being mostly 20%. There exist typical sedimentary gravity flows in the Bidian area, and two kinds of facies, i.e., lacustrine facies and sublacustrine fan facies, were identified in Ⅲ～Ⅳ sand-bed sets of 3rd Member of Hetaoyuan Formation. Sliding evidence of fluidized flows, slips, pull-apart and drop-down rock masses could be found from well cores. In addition, ripple cross laminations, water-escaping structure and dish-shaped structure also grew, with the last two phenomena developed in the Bouma sequence of C segment, in association with the ripple cross laminations. Flat and conformable beds formed by turbidites of Bouma BE segments are seen above and below the rock masses. The layer-flattening seismic profiles also show that, before the deposition of the second sand-bed set of 3rd Member of Hetaoyuan Formation, there existed parallel and sub-parallel seismic reflections interbedded with lentoid or wavy, eyeball-shaped textures. It is held that the parallel and sub-parallel textures probably represent background sediments of deep-water mudstones, whereas the wavy and eyeball-shaped textures represent typical sublacustrine fans.
引文
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胡受权,郭文平.2002.南襄盆地泌阳断陷高分辨率层序地层研究[J].新疆石油地质,23(3):201~204.
蒋恕,王华.2005.小型断陷湖盆特殊地质体地理物理特征研究——以泌阳凹陷为例[J].石油地理物理勘探,40(5):565~568.
李斌,孟自芳,李相博,等.2005.泌阳凹陷下第三系构造特征与沉积体系[J].吉林大学学报(地球科学版),35(3):332~339.
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明海会,金振奎,李清作,等.2005.泌阳凹陷安棚油田深层系沉积相及对油气分布的控制作用[J].地球科学与环境学报,27(2):48~51.
孙尚如.2004.泌阳凹陷湖相白云岩层序地层学分析[J].西北地质,37(1):302~307.
温志新,王红漫,陈春强,等.2006.南襄盆地泌阳凹陷南部陡坡带隐蔽油气藏形成与分布[J].石油实验地质,28(2):117~121.
鲜本忠,姜在兴,操应长,等.2001.泌阳凹陷东南部下切谷的发现及其意义[J].石油与天然气地质,22(4):304~308.
杨道庆,陆建林.2005.泌阳凹陷新生代构造演化及其形成机制[J].石油天然气学报(江汉石油学院学报),27(4):416~419.
钟俊义,郑浚茂,王振付,等.2006.泌阳凹陷北部斜坡带三角洲沉积特征与油气成藏研究[J].特种油气藏,13(1):26~29.
Chen Liang,Wang Hua,Han Jinyang,et al.2006.Sequence stratigra-phy and stratumlithologytrap prediction of the Eh3upper memberof Hetaoyuan Formation in south Xia’ermen Oilfield,Biyang Sag[J].Petroleum Exploration and Development,33(1):262~267(in Chinese).
Chen Ping.2006.Sand reservoir prediction of steepslope zonein BiyangSag[J].Petroleum Exploration and Development,33(2):198~200(in Chinese).
Fan Zhonghai,Yang Zhenfeng,Zhang Cheng,et al.2005.Applicationof high-resolution sequence stratigraphic frameworkto detailed cor-relation of fan-delta sandstone reservoirs:a case studyfromZhaowaOilfield of Biyang depression[J].Geological Science and Technolo-gy Information,24(2):33~38(in Chinese).
Hu Shouquan and Guo Wenping.2002.Application of high-resolutionsequence stratigraphyin Biyang fault depression of Nanxiang basin[J].Xinjiang Petroleum Geology,23(3):201~204(in Chinese).
Jiang Shu and Wang Hua.2005.Geophysical feature of special low-posi-tional geologic bodiesin minor fault lake basin:a case of Biyang sag[J].Oil Geophysics Prospect,40(5):565~568(in Chinese).
Li Bin,Meng Zifang,Li Xiangbo,et al.2005.The structural featuresand depositional systems of the Early Tertiaryinthe Biyang depres-sion[J].Journal of Jilin University(Earth Science Edition),35(3):332~339(in Chinese).
Lin Sheqing,Li Liansheng,Bai Zhenrui,et al.2002.Features of thecomplex fault block reservoirs in Biyang depression and explorationtechniques[J].Henan Petroleum,16(3):12~14(in Chinese).
Ming Haihui,Jin Zhenkui,Li Qingzuo,et al.2005.Sedi mentaryfaciesof deep sequences of Anpeng Oilfield in Biyang Depression and itscontrol over oil-gas distribution[J].Journal of Earth Sciences andEnvironment,27(2):48~51(in Chinese).
Payton C E.1977.Seismic stratigraphy:Applications to hydrocarbonExploration[J].AAPG Special,1~467.
Sun Shangru.2004.Analysis of high-resolution sequence stratigraphy oflake-dolomite formation in Biyang depression[J].NorthwesternGeology,37(1):302~307(in Chinese).
Walker R G.1978.Deep-water sandstone facies and ancient submarinefanfor model for explorationfor stratigraphic traps[J].AAPGBul-letin,62:932~996.
Wen Zhixin,Wang Hongman,Chen Chunqiang,et al.2006.Formationand distribution of subtle reservoirsinthe southern steepslope zonein the Biyang sag of the Nanxiang basin[J].Petroleum Geology&Experi ment,28(2):117~121(in Chinese).
Xian Benzhong,Jiang ZaiXing,Cao Yingchang,et al.2001.Discoveryof incised valley in southeast of Biyang depression and its signifi-cance[J].Oil&Gas Geology,22(4):304~308(in Chinese).
Yang Daoqing and Lu Jianlin.2005.Forming mechanismand structuralevolution of Cenoxoic in Biyang sag[J].Journal of Oil and GasTechnology(JJPI),27(14):416~419(in Chinese).
Zhong Junyi,Zheng Junmao,Wang Zhenfu,et al.2006.Study ondelta systemandreservoir-formingcharacteristics onthe northslopeof Biyang depression[J].Special Oil and Gas Reservoirs,13(1):26~29(in Chinese).
陈春强,张亚中,吴丽艳,等.2005.安棚油田扇三角洲沉积微相特征与油气分布[J].新疆石油地质,26(5):529~532.
陈亮,王华,韩晋阳,等.2006.泌阳凹陷下二门地区南部核三上亚段层序地层特征及地层-岩性圈闭预测[J].石油勘探与开发,33(1):262~267.
陈萍.2006.泌阳凹陷陡坡带砂砾岩体预测[J].石油勘探与开发,33(2):198~200.
樊中海,杨振峰,张成,等.2005.高精度层序地层格架在扇三角洲体系储层精细对比中的应用——以泌阳凹陷赵凹油田为例[J].地质科技情报,24(2):33~38.
胡受权,郭文平.2002.南襄盆地泌阳断陷高分辨率层序地层研究[J].新疆石油地质,23(3):201~204.
蒋恕,王华.2005.小型断陷湖盆特殊地质体地理物理特征研究——以泌阳凹陷为例[J].石油地理物理勘探,40(5):565~568.
李斌,孟自芳,李相博,等.2005.泌阳凹陷下第三系构造特征与沉积体系[J].吉林大学学报(地球科学版),35(3):332~339.
林社卿,李连生,白振瑞,等.2002.泌阳凹陷复杂断块群油藏特征及勘探技术[J].河南石油,16(3):12~14.
明海会,金振奎,李清作,等.2005.泌阳凹陷安棚油田深层系沉积相及对油气分布的控制作用[J].地球科学与环境学报,27(2):48~51.
孙尚如.2004.泌阳凹陷湖相白云岩层序地层学分析[J].西北地质,37(1):302~307.
温志新,王红漫,陈春强,等.2006.南襄盆地泌阳凹陷南部陡坡带隐蔽油气藏形成与分布[J].石油实验地质,28(2):117~121.
鲜本忠,姜在兴,操应长,等.2001.泌阳凹陷东南部下切谷的发现及其意义[J].石油与天然气地质,22(4):304~308.
杨道庆,陆建林.2005.泌阳凹陷新生代构造演化及其形成机制[J].石油天然气学报(江汉石油学院学报),27(4):416~419.
钟俊义,郑浚茂,王振付,等.2006.泌阳凹陷北部斜坡带三角洲沉积特征与油气成藏研究[J].特种油气藏,13(1):26~29.
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