岩性油气藏 ›› 2015, Vol. 27 ›› Issue (6): 55–63.doi: 10.3969/j.issn.1673-8926.2015.06.008

• 油气地质 • 上一篇    下一篇

基于沉积过程的三角洲前缘河口坝储层构型精细分析——以老君庙油田 L 1 1 小层为例

秦国省1,2,吴胜和 2,郑联勇3,喻 宸1,3   

  1.  1. 中国石油大学(北京) 地球科学学院,北京 102249 ; 2. 中国石油勘探开发研究院,北京 100083 ;3. 中国石油玉门油田分公司 勘探开发研究院,甘肃 酒泉 735200
  • 出版日期:2015-12-20 发布日期:2015-12-20
  • 第一作者:秦国省( 1988- ),男,中国石油大学(北京)在读硕士研究生,研究方向为精细油藏描述及开发地质。 地址:( 102249 )北京市昌平区府学路 18 号中国石油大学(北京)地球科学学院。 电话:( 010 ) 89733465 。 E-mail : qin8002008@163.com 。
  • 基金资助:

    国家重大科技专项“复杂油气田地质与提高采收率技术”(编号: 2011ZX05009-003 )和中国石油天然气集团公司重大科技专项“玉门油田重上百万吨勘探开发关键技术研究”(编号: 2013E-3305 )联合资助

Detailed architecture analysis of mouth bar in delta front based on sedimentary process: A case study of L11 layer in Laojunmiao Oilfield

Qin Guosheng 1,2,Wu Shenghe 2,Zheng Lianyong 3,Yu Chen 1,3   

  1.  1. PetroChina Research Institute of Petroleum Exploration & Development , Beijing 100083 , China ; 2. College of Geosciences ,China University of Petroleum , Beijing 102249 , China ; 3. Research Institute of Exploration and Development ,PetroChina Yumen Oilfield Company , Jiuquan 735200 , Gansu , China
  • Online:2015-12-20 Published:2015-12-20
  • Supported by:

    秦国省( 1988- ),男,中国石油大学(北京)在读硕士研究生,研究方向为精细油藏描述及开发地质。 地址:( 102249 )北京市昌平区府学路 18 号中国石油大学(北京)地球科学学院。 电话:( 010 ) 89733465 。 E-mail : qin8002008@163.com 。

摘要:

应用老君庙油田较丰富的钻井资料和多年积累的地质研究成果,从沉积过程角度出发,对其河口坝较发育的 L11 小层进行了储层构型研究,并对基于沉积过程的河口坝储层构型分级系统进行了探讨。该系统以末端水下分流河道控制形成的单一成因河口坝为三级构型单元(同时也是基本的研究单元),以主干水下分流河道控制形成的单一成因河口坝复合体为四级构型单元,以多个主干水下分流河道控制形成的河口坝复合体为五级构型单元。确定了单一成因河口坝的识别标志,在研究区共识别出 14 个单一成因河口坝。 在此基础上,通过横切物源剖面及顺物源剖面确定各单一成因河口坝沉积的先后顺序,结合三维综合分析,最终阐明了各单一成因河口坝的时间演化序列。在沉积学原理的指导下,恢复了研究区复合河口坝的形成过程,明确了河口坝的规模及河口坝间的叠置样式与其形成过程间的耦合关系。

关键词: 复杂砂砾岩体, 岩性定量识别, 阵列感应, 波阻抗

Abstract:

Based on abundant well drilling data and geological research results in Laojunmiao Oilfield, detailed architecture analysis was carried out in the L11 layer where mouth bars are well developed. In the view of sedimentary process, the hierarchical system of mouth bar was discussed, taking the single mouth bar controlled by terminal underwater distributary channel as the third order architecture unit, the complex single mouth bar controlled by trunk underwater distributary channels as the fourth order architecture unit, and the multiple mouth bar controlled by several trunk underwater distributary channels as the fifth order architecture unit. The signs of single mouth bar were clarified, and 14 single bars were identified in the study area. According to the principle of sedimentation that bar formed in different time has different bar bottom elevation, sedimentary sequence can be constructed in the transverse section, meanwhile, the time sequence can be constructed in the longitudinal section. Integrated with 3D comprehensive analysis, the evolution time of different bars was determined. Under the guidance of the principles of sedimentology, the sedimentary process in the delta front bar was constructed. The size of single bar and the connect relationship between different bars were well coupled with the sedimentary process.

Key words:  complex sand-conglomerate bodies , quantitative lithology identification , array induction , wave impedance

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