南皮凹陷孔二段物源体系综合分析
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摘要
本文利用南皮凹陷三维地震资料,结合重矿物数据、单井砂岩含量、地震属性解释、地震相解释确定物源方向、古流向及砂岩含量等值线,分析沉积体在南皮凹陷内部的展布特征。结果表明:在孔二段沉积时期,南皮凹陷存在徐黑凸起、东光凸起、沧县隆起3个物源区,根据单井及连井地震相解释中的叠瓦状或S型前积反射结构,确定了携带沉积物的古水流前进方向,并根据被解释为滨浅湖相的高振幅、高频、高连续平行地震反射结构圈定砂体的沉积边界,认为乌7井、乌12井、乌深1井附近存在双向的古水流,而叶21井、叶22井的古水流直接指向湖泊之中。综合上述分析,结合砂岩含量等值线图可知,部分徐黑凸起物源与东光凸起物源在南皮凹陷形成双物源混和沉积,而沧县隆起物源直接沉积于南皮凹陷滨浅湖中。
An analysis of provenance,paleocurrent,sandstone content isogram and distribution characteristics of sand bodies at Ek2 in Nanpi Sag has been conducted mainly based on 3D seismic data,combined with heavy minerals,sandstone content of single wells,seismic attributes and seismic facies interpretation.The results demonstrate that there are three main material source areas at Ek2 in Nanpi Sag: Xuhei salient,Dongguang salient,and Cangxian uplift.Then paleocurrent has been determined by the imbricate or S-type progradational reflection configuration of delta facies from seismic facies interpretation of single well and crosswell seismic profiles.And sand body boundaries have been determined by high amplitude,high frequency,high continuous parallel seismic reflection configuration from the seismic facies interpretation of lacustrine facies.The sandstone content isograms are obtained.The two-direction paleocurrents with a portion of sediment from Xuhei salient and Dongguang salient had come together near well Wu 7,Wu 12 and Wushen 1,producing mix-deposition material source with the relatively high sandstone content.Nevertheless the sediment from Cangxian uplift definitely deposited in coastal shallow lake following the paleocurrent passed by well Ye 21 and Ye 22 in Nanpi sag.
An analysis of provenance,paleocurrent,sandstone content isogram and distribution characteristics of sand bodies at Ek2 in Nanpi Sag has been conducted mainly based on 3D seismic data,combined with heavy minerals,sandstone content of single wells,seismic attributes and seismic facies interpretation.The results demonstrate that there are three main material source areas at Ek2 in Nanpi Sag: Xuhei salient,Dongguang salient,and Cangxian uplift.Then paleocurrent has been determined by the imbricate or S-type progradational reflection configuration of delta facies from seismic facies interpretation of single well and crosswell seismic profiles.And sand body boundaries have been determined by high amplitude,high frequency,high continuous parallel seismic reflection configuration from the seismic facies interpretation of lacustrine facies.The sandstone content isograms are obtained.The two-direction paleocurrents with a portion of sediment from Xuhei salient and Dongguang salient had come together near well Wu 7,Wu 12 and Wushen 1,producing mix-deposition material source with the relatively high sandstone content.Nevertheless the sediment from Cangxian uplift definitely deposited in coastal shallow lake following the paleocurrent passed by well Ye 21 and Ye 22 in Nanpi sag.
引文
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[15]Gregor P Eberli,Jose Luis Masaferro et al.Seismicimaging of carbonate reservior and systerms.AAPGMemoir 81,2004
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[17]胡宗全,朱筱敏,彭勇民.准噶尔盆地西北缘车排子地区侏罗系物源及古水流分析.古地理学报,2001,3(3):49～54Hu Zongquan,Zhu Xiaomin,Peng Yongnin.Analysisof provence and palaeocurrent direction of Jurassic atChepaizi region in Northwest edge of Jungger basin.Journal of Palaeogeography,2001,3(3):49～54
[18]蒲仁海,杜金虎,崔永谦.湖相退积反射的几个例子.石油地球物理勘探,2003,38(1):67～71Pu Renhai,Du Jinhu,Cui Yongqian.A few examplesof lacustrine retrogradation reflection.OGP,2003,38(1):67～71
[19]张万选,张厚福,曾洪流等.陆相地震地层学.山东东营:石油大学出版社,1993
[2]姜在兴.沉积学.北京:石油工业出版社,2003
[3]Octavian Catuneanu.Principles of Sequence Stratig-raphy.ELSEVIER,2006
[4]Paul Weimer,Henry W Posamentier.Siliciclastic se-quence stratigraphy:Recent developments and appli-cations.AAPG Memoir 57,1993
[5]Vail P R,Andernard F,Bowman S A,Eisner P N andPerez C C.The Stratigraphic Signatures of Tecton-ics Eustasy and Sedirnenlology:Cycles and Eventsin Stratigraphic Berlin.Springer-Verlog,1991:617～659
[6]周力宏,李勇,王振生,肖敦清等.陆相断陷盆地缓坡带沉积体系与成藏动力学——以黄骅拗陷为例.北京:科学出版社,2009,107
[7]大港油田石油地质志编辑委员会.中国石油地质志(卷四).大港油田.北京:石油工业出版社,1991,102～103
[8]刘子藏,周育文,肖玉永等.沧东—南皮凹陷地层沉积研究新认识.新疆地质,2009,27(4):387～389Liu Zicang,Zhou Yuwen,Xiao Yuyong et al.Newknows about stratum deposition research in Cang-dong-Nanpi sag.Xinjiang Geology,2009,27(4):387～389
[9]吴小羊,刘天佑,尹正武等.大巴山及其前缘区重磁场特征与地质构造分析.石油地球物理勘探,2008,43(3):350～354Wu Xiaoyang,Liu Tianyou,Yi Zhengwu et al.Anal-ysis on feature of gravity and magnetic field and geo-logical structure in frontal area of Dabashan Moun-tain.OGP,2008,43(3):350～354
[10]杨辉,程军,王宜昌.重新认识东营凹陷的深层构造.石油地球物理勘探,2005,40(3):360～365Yang Hui,Cheng Jun,Wang Yichang.Renewingknowledge of deep structures of Dongying depres-sion.OGP,2005,40(3):360～365
[11]徐田武,宋海强,况昊.物源分析方法的综合运用——以苏北盆地高邮凹陷泰一段地层为例.地球学报,2009,30(1):111～117Xu Tianwu,Song Haiqiang,Kuang Hao.Syntheticapplication of the provenance analysis technique:acase study of Member 1of Taizhou Formation inGaoyou Sag,Subei Basin.Acta Geoscientica Sinica,2009,30(1):111～117
[12]赵红格,刘池洋.物源分析方法及研究进展.沉积学报,2003,21(3):409～413Zhou Hongge,Liu Chiyang.Approaches and pros-pects of provenance analysis.Acta SedimentologicaSinica,2003,21(3):409～413
[13]王玉学,丛玉梅,黄见等.地震波形分类技术在河道预测中的应用.资源与产业,2006,8(2):71～74Wang Yuxue,Cong Yumei,Huang Jian et al.Appli-cation of seismic waveform classification technique inthe prediction of channel.Resource﹠Industries,2006,8(2):71～74
[14]孙家振,李兰斌.地震地质综合解释教程.湖北武汉:中国地质大学出版社,2002
[15]Gregor P Eberli,Jose Luis Masaferro et al.Seismicimaging of carbonate reservior and systerms.AAPGMemoir 81,2004
[16]韩冰.黄骅坳陷孔南地区孔二段沉积体系研究[博士学位论文].四川成都:成都理工大学,2009
[17]胡宗全,朱筱敏,彭勇民.准噶尔盆地西北缘车排子地区侏罗系物源及古水流分析.古地理学报,2001,3(3):49～54Hu Zongquan,Zhu Xiaomin,Peng Yongnin.Analysisof provence and palaeocurrent direction of Jurassic atChepaizi region in Northwest edge of Jungger basin.Journal of Palaeogeography,2001,3(3):49～54
[18]蒲仁海,杜金虎,崔永谦.湖相退积反射的几个例子.石油地球物理勘探,2003,38(1):67～71Pu Renhai,Du Jinhu,Cui Yongqian.A few examplesof lacustrine retrogradation reflection.OGP,2003,38(1):67～71
[19]张万选,张厚福,曾洪流等.陆相地震地层学.山东东营:石油大学出版社,1993
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