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非均质滩相储层地震反射特征及识别
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  • 英文篇名:Characteristics and Identification of Seismic Reflection in Heterogeneous Beach Reservoirs
  • 作者:代瑞雪 ; 冉崎 ; 关旭 ; 梁瀚 ; 赖强
  • 英文作者:DAI Ruixue;RAN Qi;GUAN Xu;LIANG Han;LAI Qiang;Exploration and Development Research Institute,Southwest Oil & Gas Company,PetroChina;
  • 关键词:川中地区 ; 龙王庙组 ; 地震反射模式 ; 正演模拟 ; 地震属性
  • 英文关键词:Middle Sichuan Area;;Longwangmiao Formation;;seismic reflection modes;;forward modeling;;seismic attribute
  • 中文刊名:XNSY
  • 英文刊名:Journal of Southwest Petroleum University(Science & Technology Edition)
  • 机构:中国石油西南油气田公司勘探开发研究院;
  • 出版日期:2018-11-12 13:16
  • 出版单位:西南石油大学学报(自然科学版)
  • 年:2019
  • 期:v.41;No.194
  • 基金:国家科技重大专项(2016ZX05052);; 中国石油天然气股份有限公司重大科技专项(2016E-0604)
  • 语种:中文;
  • 页:XNSY201903006
  • 页数:10
  • CN:03
  • ISSN:51-1718/TE
  • 分类号:64-73
摘要
四川盆地川中地区龙王庙组储层非均质性较强,造成地震反射特征多样化。为此,基于实钻资料的深入分析,结合模型正演总结了川中地区龙王庙组储层地震反射模式,刻画出有利滩相储层的展布。研究结果表明,基于实钻资料厘清了川中地区龙王庙组滩相储层的变化规律,认为磨溪主体储层较发育,外围区储层普遍较薄且非均质性更强;川中龙王庙组储层存在5种地震反射模式,其中,顶界波谷、内部强峰和双峰反射特征为龙王庙组有利地震响应特征;按照"储层底界对应亮点波峰,储层发育程度影响龙王庙组顶界反射"的思路可有效识别龙王庙组滩相储层,其中,磨溪主体为滩体连片发育区,外围区发育北东向条带状展布点滩。
        The Longwangmiao Formation Reservoir in the middle of the Sichuan Basin is highly heterogeneous, leading to diversified seismic reflection characteristics. Hence, based on in-depth analyses of actual drilling data and forward modeling,the seismic reflection modes in the Longwangmiao Formation Reservoir are summarized in order to delineate which distribution favors beach reservoirs. Beach reservoir variations in the Longwangmiao Formation are examined based on actual drilling data. It is believed that the main body of the Moxi Reservoir is more developed, and the reservoir in the peripheral areas is generally thinner with higher heterogeneity. There are five seismic reflection modes in the Longwangmiao Formation in the middle Sichuan area. In particular, reflection characteristics such as troughs at upper boundaries, strong internal peaks,and double peaks are characteristics of favorable seismic responses in the Longwangmiao Formation. A beach reservoir can be effectively identified based on the idea that lower reservoir boundaries correspond to highlight crests and that reservoir development influences reflection from the upper boundaries in the Longwangmiao Formation. In particular, contiguous beach reservoirs develop along the main body of the Moxi Reservoir, while northeast-striking banded point beaches develop in the peripheral areas.
引文
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