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东营凹陷北带中浅层油气运移通道组合类型及成藏作用
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  • 英文篇名:Combination types and accumulation effect of hydrocarbon migration channels in middle-shallow layers of northern belt in Dongying sag
  • 作者:穆星
  • 英文作者:MU Xing;Exploration & Development Research Institute of Shengli Oilfield Company, SINOPEC;
  • 关键词:东营凹陷北带 ; 中浅层 ; 运移通道 ; 组合类型 ; 成藏作用
  • 英文关键词:northern belt in Dongying sag;;middle-shallow layers;;migration channel;;combination types;;accumulation effect
  • 中文刊名:SYHN
  • 英文刊名:Petroleum Geology and Engineering
  • 机构:中国石化胜利油田分公司勘探开发研究院;
  • 出版日期:2019-05-25
  • 出版单位:石油地质与工程
  • 年:2019
  • 期:v.33
  • 基金:国家油气科技重大专项“渤海湾盆地精细勘探关键技术”项目下属课题三“济阳坳陷油气富集机制与增储领域”(2016ZX05006–003)
  • 语种:中文;
  • 页:SYHN201903009
  • 页数:5
  • CN:03
  • ISSN:41-1388/TE
  • 分类号:37-41
摘要
利用地层压力、流体势,结合原油密度及地层水矿化度的变化规律,确定了东营凹陷北带中浅层油气运移优势方向。中浅层主要发育断层、砂体及不整合3类油气运移通道,形成了砂体–断层–砂体、断层–砂体–不整合、断层–不整合3种组合类型。这些组合类型对研究区油气成藏具有十分重要的作用,控制了油气运移模式,形成了反"Z"字型输导运移模式、阶梯状输导运移模式;其次,控制了油气空间分布特征,断层–砂体–不整合型和断层–不整合型决定郑家–王庄地区油气具有"多层系分布、油气藏类型多样、运移距离远"的特征,单一的砂体–断层–砂体组合类型决定胜坨、单家寺地区油气具有"油气藏类型单一、运移距离近"的特点。
        By using formation pressure and fluid potential, combined with the variation regularity of crude oil density and formation water salinity, the dominant direction of oil and gas migration from Guantao formation to the third member of Shahejie formation in the northern belt of Dongying sag was determined. In the middleshallow layers, there are mainly three kinds of oil and gas migration channels: faults, sand bodies and unconformities, which can form three combination types: sand body-fault-sand body type, fault-sand bodyunconformity type, and fault-unconformity type. These combination types play a very important role in the oil and gas accumulation in the study area. On the one hand, they control the oil and gas migration model and form the anti "Z" front model and stepladder model. On the other hand, they control the spatial distribution characteristics of oil and gas. The fault-sand body-unconformity type and sand body-unconformity type determine that the oil and gas in Zhengjia-Wangzhuang area has the characteristics of "multi-layer system distribution, various types of oil and gas reservoirs, and long migration distance", while the single type of sand body-fault-sand body combination determines that the oil and gas in Shengtuo and Shanjiasi areas has the characteristics of "single type of oil and gas reservoir and short migration distance".
引文
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