砂砾岩扇三角洲水下前积体测井-地震层序解释新方法
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  • 英文篇名:A New Method for Logging-Seismic Sequence Interpretation of Underwater Progradation Complex in Sandy Conglomerate Fan Deltas
  • 作者:王建 ; 曲永强 ; 潘建国 ; 尹路 ; 许多年 ; 滕团余
  • 英文作者:WANG Jian;QU Yongqiang;PAN Jianguo;YIN Lu;XU Duonian;TENG Tuanyu;Xinjiang Oilfield Company,PetroChina;Northwest Branch, Research Institute of Petroleum Exploration and Development,PetroChina;
  • 关键词:准噶尔盆地 ; 玛湖凹陷 ; 百口泉组 ; 前积体 ; 地层对比 ; 扇三角洲 ; 测井-地震层序
  • 英文关键词:Junggar basin;;Mahu sag;;Baikouquan formation;;progradation complex;;stratigraphic correlation;;fan delta;;logging-seismic sequence
  • 中文刊名:XJSD
  • 英文刊名:Xinjiang Petroleum Geology
  • 机构:中国石油新疆油田分公司;中国石油勘探开发研究院西北分院;
  • 出版日期:2018-10-01
  • 出版单位:新疆石油地质
  • 年:2018
  • 期:v.39;No.194
  • 基金:国家自然科学基金(41872116)
  • 语种:中文;
  • 页:XJSD201805016
  • 页数:6
  • CN:05
  • ISSN:65-1107/TE
  • 分类号:101-106
摘要
为精细描述扇三角洲储集层,提高油气勘探成功率,以准噶尔盆地玛湖凹陷西斜坡三叠系百口泉组一段和二段为例,提出测井-地震层序解释新方法,旨在寻找扇三角洲前缘水下有利储集体。基于沉积期古坡度的古地貌恢复新方法,精细刻画百口泉组一段和二段古沟槽的展布;充分挖掘测井资料信息,应用地层倾角测井判别古水流,精细刻画古水流方向;利用全新地震层位解释模式,井震结合,在古沟槽内顺古水流方向寻找前积地震反射体,同时应用湖岸线确定方法,识别研究区扇三角洲水下有利储集体。研究表明,扇三角洲前缘在斜坡带前积现象普遍,古沟槽内尤其发育。结合地震反演、岩心实测、测井解释、核磁数据、试油成果以及钻后评价等分析,证实了研究区前积体模式的合理性。
        In order to detailedly characterize the reservoirs in fan deltas and improve the success rate of hydrocarbon exploration, and tak-ing the first and the second members of the Triassic Baikouquan formation on the western slope of the Mahu sag, Junggar basin as exam-ples, the paper proposes a new method for logging-seismic sequence interpretation aiming at discovering the favorable underwater reser-voirs in delta fan front. The fine description of the distribution of ancient grooves is carried out for the first and the second members of theBaikouquan formation by using a new method of ancient landform restoration. The logging data and stratigraphic dip are used to judge andcharacterize the paleocurrent directions. A totally new seismic interpretation model combined with logging-seismic combination technologyis applied to find progradation complexes along river flowing directions in ancient grooves. Meanwhile, the favorable underwater reservoirsin the study area are identified by using lake shoreline determination method. The study shows that the fan-delta-front progradation on theslope belt is commonly found, especially in the ancient grooves. Based on the data analysis of seismic inversion, actual core measurement,logging interpretation, NMR, production test and post-drilling evaluation, it has been proved that the new model of progradation complex isreasonable.
引文
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