东营凹陷南坡东段潜山地层划分与残留地层展布
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摘要
东营凹陷南坡东段的潜山勘探程度很低,复杂的残留地层结构及其发育模式认识不清严重制约着潜山的精细勘探。综合应用野外标准岩石地层对比、古生物群落时代划分及不整合测井综合分层等技术,重新厘定研究区的深部层系地层归属与划分方案。在此基础上,应用构造演化恢复技术搞清多期构造运动对地层剥蚀、残留的控制作用,最终明确残留地层平面的展布特征。研究表明,研究区中生界残留地层仅分布在王古2井区以北地区,南部草桥-王家岗南部广大地区则为上古生界地层;由于研究区遭受印支运动挤压成山、燕山运动拉张裂陷等多幕构造运动影响,残留地层表现为近北西向"跷跷板"状的地层产状模式。该成果可为东营凹陷的复杂潜山油气藏勘探提供理论指导。
The degree of buried-hill exploration is low in the eastern section of the Dongying depression southern slope,as impacted by the complex structure of residual sedimentary sequences and development model. The stratigraphic division of deep sedimentary formations in the study area have been reviewed by means of field lithostratigraphic correlation,paleontological division and unconformity logging integrated stratigraphic division.Based on that,tectonic reconstruction has been applied to evaluate the control of the multiphase structural activities on the erosion of the sedimentary sequences. Distribution characteristics of residual sequences are clarified.The results show that Mesozoic residual sequences in the study area are only distributed in the area north of Wanggu Well 2,whereas the southern Caoqiao-Wangjiagang contains mainly Upper Paleozoic sequences. The compressional Indosinian tectonics and the extensional Yanshanian rifting may have created the NW-trending seesaw-type pattern for the buried-hill residual sequences. Our results offer a theoretical guidance on the complex buried-hill exploration in the Dongying depression.
The degree of buried-hill exploration is low in the eastern section of the Dongying depression southern slope,as impacted by the complex structure of residual sedimentary sequences and development model. The stratigraphic division of deep sedimentary formations in the study area have been reviewed by means of field lithostratigraphic correlation,paleontological division and unconformity logging integrated stratigraphic division.Based on that,tectonic reconstruction has been applied to evaluate the control of the multiphase structural activities on the erosion of the sedimentary sequences. Distribution characteristics of residual sequences are clarified.The results show that Mesozoic residual sequences in the study area are only distributed in the area north of Wanggu Well 2,whereas the southern Caoqiao-Wangjiagang contains mainly Upper Paleozoic sequences. The compressional Indosinian tectonics and the extensional Yanshanian rifting may have created the NW-trending seesaw-type pattern for the buried-hill residual sequences. Our results offer a theoretical guidance on the complex buried-hill exploration in the Dongying depression.
引文
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[2]张鹏飞,刘惠民,曹忠祥,等.太古宇潜山风化壳储层发育主控因素分析:以鲁西济阳地区为例[J].吉林大学学报(地球科学版),2015,45(5):1289-1298.
[3]李丕龙,张善文,王永诗,等.断陷盆地多样性潜山成因及成藏研究[J].石油学报,2004,25(3):28-31.
[4]朱炎铭,宋志敏,秦勇,等.渤海湾盆地深层古生界油气勘探前景[J].中国矿业大学学报,2002,31(4):344-348.
[5]李宝利,贺振健,陈长贞.济阳坳陷中生界滤波分割综合地层划分方法[J].油气地质与采收率,2004,11(5):7-9.
[6]宋来明,彭仕宓,李国蓉,等.山东胜利油田车镇地区下古生界碳酸盐岩潜山储集层特征[J].现代地质,2004,18(2):263-268.
[7]李明娟,张洪年,胡宗全,等.济阳坳陷古生界层序地层研究[J].石油与天然气地质,2004,25(1):106-110.
[8]吕大炜,李增学,李文涛,等.车镇凹陷上古生界高分辨率层序地层研究[J].地层学杂志,2008,32(2):182-187.
[9]刘华.济阳坳陷桩海地区中生界同位素年代地层学研究[J].中国煤炭地质,2014,26(11):12-16.
[10]陈钢花,孙志勇,耿生臣,等.测井曲线在济阳坳陷中生界地层划分中的应用[J].测井技术,2005,29(1):40-42.
[11]张振飞,谢忠怀,李宝利,等.多参数测井地层划分的遗传最优分割法及其在济阳坳陷中生界中的应用[J].地球科学——中国地质大学学报,2009,34(4):682-690.
[12]山东省地质矿产局.山东省区域地质志[M].北京:地质出版社,1991:38-62.
[13]姜慧超,张勇,任凤楼,等.济阳、临清坳陷及鲁西地区中新生代构造演化对比分析[J].中国地质,2008,35(5):963-974.
[14]张忠民,龙胜祥,许化政.中国石化东部探区古生界原生油气藏勘探前景[J].石油勘探与开发,2006,33(4):420-425.
[15]孙耀庭,李辉,孙超,等.济阳坳陷桩西地区中生界火成岩岩相序列[J].矿物岩石地球化学通报,2015,34(1):120-127.
[16]梁钊,周瑶琪,刘晨光,等.富林洼陷中生界火山岩岩性岩相及不整合特征[J].大庆石油地质与开发,2016,35(6):6-13.
[17]陈钢花,张蕾,宋国奇,等.测井资料在确定不整合面深度中的应用[J].测井技术,2008,31(3):311-314.
[18]陈钢花,尚翠红,刘书会,等.超剥带残留地层测井划分方法研究[J].测井技术,2015,39(3):368-372.
[19]侯方辉,李三忠,王金铎,等.东营凹陷王家岗地区王古1潜山构造特征及油气成藏条件[J].中国海洋大学学报,2007,37(2):341-344.