大民屯凹陷西陡坡古近系岩性地层油气藏勘探
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摘要
大民屯凹陷西陡坡在古近纪早期由边界断层控制形成,发育凸起—陡坡边缘、陡坡—洼陷边缘两个断裂坡折带。西陡坡的物源供给是形成岩性地层油气藏的重要条件。应用层序地层学原理,大民屯凹陷古近系可划分为1个二级层序、3个三级层序。三级层序可进一步划分为深断陷和浅断陷两种类型,深断陷型层序油气成藏条件好。断裂坡折带控制形成的低位域砂砾岩体及湖侵域的砂体是岩性地层油气藏勘探的重点目标。运用地震储集层预测技术预测的砂砾岩体的空间分布经钻探证实。图6参17
The margin fault controlled the formation of the western steep slope in the Damintun Sag during the early Paleogene,and two fracture slope break zones including salient-steep slope margin and steep slope-subsag margin were developed.The source supply of western steep slope was the important condition for forming the lithostratigraphic reservoir.In terms of sequence stratigraphical principles,the Paleogene can be divided into one 2-order sequence and 3-order sequences.The 3-order sequence can be further divided into deep-faulted sequence and shallow-faulted sequence,with the former one having excellent reservoir conditions.The sandstone body of low-stand system and the sandbody of lake transgression under the control of the fracture slope break zones are important targets for the lithostratigraphic reservoir exploration.Drilling proves the predicted spacial distribution characteristics of sandstone body.
The margin fault controlled the formation of the western steep slope in the Damintun Sag during the early Paleogene,and two fracture slope break zones including salient-steep slope margin and steep slope-subsag margin were developed.The source supply of western steep slope was the important condition for forming the lithostratigraphic reservoir.In terms of sequence stratigraphical principles,the Paleogene can be divided into one 2-order sequence and 3-order sequences.The 3-order sequence can be further divided into deep-faulted sequence and shallow-faulted sequence,with the former one having excellent reservoir conditions.The sandstone body of low-stand system and the sandbody of lake transgression under the control of the fracture slope break zones are important targets for the lithostratigraphic reservoir exploration.Drilling proves the predicted spacial distribution characteristics of sandstone body.
引文
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[15]谢文彦,姜建群,张占文,等.大民屯凹陷油气系统研究[J].石油勘探与开发,2004,31(2):38-42.(XIE Wen-yan,JIANG Jian-qun,ZHANG Zhan-wen,et al.The petroleum system in theDamingtun Sag,Liaohe Oilfield[J].Petroleum Exploration andDevelopment,2004,31(2):38-42.)
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[2]冯有良,邱以刚.高精度层序地层学在济阳坳陷下第三系岩性地层油气藏勘探中的应用[J].石油学报,2003,24(1):49-52.(FENG You-liang,QIU Yi-gang.Application of high-resolutionsequence stratigraphy to exploration of Lower Tertiary subtlereservoirs in Jiyang Subbasin[J].Acta Petrolei Sinica,2003,24(1):49-52.)
[3]李丕龙,庞雄奇.陆相断陷盆地岩性地层油气藏形成—以济阳坳陷为例[M].北京:石油工业出版社,2004.(LI Pi-long,PANGXiong-qi.The formation of subtle oil and gas reservoir in thecontinental rift basin—the example of Jiyang Depression[M].Beijing:Petroleum Industry Press,2004.)
[4]陆建林.南阳凹陷北部坡折带隐蔽油气藏勘探[J].石油勘探与开发,2004,31(3):38-40,48.(LU Jian-lin.Subtle reservoirexploration in the slope-break belt of the north NanyangDepression[J].Petroleum Exploration and Development,2004,31(3):38-40,48.)
[5]张善文,王英民,李群.应用坡折带理论寻找岩性地层油气藏[J].石油勘探与开发,2003,30(3):5-7.(ZHANG Shan-wen,WANGYing-min,LI Qun.Searching subtle traps using the theory ofslope break[J].Petroleum Exploration and Development,2003,30(3):5-7.)
[6]赵忠新,王华,陆永潮.断坡带对沉积体系的控制作用———以琼东南盆地为例[J].石油勘探与开发,2003,30(1):25-27.(ZHAOZhong-xin,WANG Hua,LU Yong-chao.Controlling role offault break zones on sedimentary system—Taking Qiongdongnanbasin as an example[J].Petroleum Exploration andDevelopment,2003,30(1):25-27.)
[7]鹿洪友,操应长,姜在兴.断陷湖盆沉积作用的基本方程及其应用[J].石油勘探与开发,2003,30(3):19-22.(LU Hong-you,CAOYing-chang,JIANG Zai-xing.The basic equation ofsedimentation and its application in rift lake basin[J].PetroleumExploration and Development,2003,30(3):19-22.)
[8]贾承造,赵文智,邹才能,等.岩性地层油气藏勘探研究的两项核心技术[J].石油勘探与开发,2004,31(3):3-9.(JIA Cheng-zao,ZHAO Wen-zhi,ZOU Cai-neng,et al.Two key technologiesabout exploration of stratigraphic/lithological reservoirs[J].Petroleum Exploration and Development,2004,31(3):3-9.)
[9]王英民,金武弟,刘书会.断陷湖盆多级坡折带的成因类型、展布及其勘探意义[J].石油与天然气地质,2003,24(30):199-203.(WANG Ying-min,JIN Wu-di,LIU Shu-hui.Genetic types,distribution and exploration significance of multistage slope breaksin rift lacustrine basin[J].Oil&Gas Geology,2003,24(30):199-203.)
[10]隋风贵,郭玉新,王宝言,等.东营凹陷深陷期构造坡折带与低位扇序列[J].石油勘探与开发,2005,32(2):63-67.(SUI Feng-gui,GUO Yu-xin,WANG Bao-yan,et al.Fault break-slope and low-stand fan sequence in Dongying Sag[J].Petroleum Explorationand Development,2005,32(2):63-67.)
[11]邬金华,张哲,王柏轩.内陆凹陷层序地层的关键界面及其有关问题[J].地层学杂志,2000,24(1):78-83.(WU Jin-hua,ZHANGZhe,WANG Bai-xuan.Sequence stratigraphy key interface andcorrelative question in inland sag[J].Stratigraphy Journal,2000,24(1):78-83.)
[12]廖兴明,姚继峰,于天欣,等.辽河盆地构造演化与油气[M].北京:石油工业出版社,1995.(LIAO Xing-ming,YAO Ji-feng,YUTian-xin,et al.The structure evolution and hydrocarbon inLiaohe basin[M].Beijing:Petroleum Industry Press,1995.)
[13]潘元林,宗国洪,郭玉新,等.济阳断陷湖盆层序地层学及砂砾岩油气藏群[J].石油学报,2003,24(3):16-23.(PAN Yuan-lin,ZONG Guo-hong,GUO Yu-xin,et al.Terrestrial sequencestratigraphy and lithological deposit group of sandstone in Jiyang faultedlacustrine basin[J].Acta Petrolei Sinica,2003,24(3):16-23.)
[14]刘立,王东坡.湖相油页岩的沉积环境及其层序地层学意义[J].石油实验地质,1996,18(3):311-316.(LIU Li,WANG Dong-po.Depositional environments of lacustrine oil shales and itssequence stratigraphy significance[J].Petroleum Geology&Experiment,1996,18(3):311-316.)
[15]谢文彦,姜建群,张占文,等.大民屯凹陷油气系统研究[J].石油勘探与开发,2004,31(2):38-42.(XIE Wen-yan,JIANG Jian-qun,ZHANG Zhan-wen,et al.The petroleum system in theDamingtun Sag,Liaohe Oilfield[J].Petroleum Exploration andDevelopment,2004,31(2):38-42.)
[16]叶加仁,郝芳,陈建渝.辽河盆地大民屯凹陷流体动力场特征[J].石油与天然气地质,2001,22(2):128-132.(YE Jia-ren,HAOFang,CHEN Jian-yu.Characteristics of fluid dynamical field inDamintun depression,Liaohe basin[J].Oil&Gas Geology,2001,22(2):128-132.)
[17]慕德梁,李成,柳锦云.辽河坳陷牛心坨地区中生界火山岩预测技术与勘探效果[J].石油勘探与开发,2005,32(3):67-69.(MUDe-liang,LI Cheng,LIU Jin-yun.Mesozoic igneous reservoirforecast and exploration achievements in Niuxintuo Area,LiaoheDepression[J].Petroleum Exploration and Development,2005,32(3):67-69.)
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