Acta Petrolei Sinica ›› 2015, Vol. 36 ›› Issue (10): 1248-1259.DOI: 10.7623/syxb201510007

• Petroleum Exploration • Previous Articles     Next Articles

Anisotropic seismic rock physics model of tight oil sandstone based on double-porosity theory

Huang Xinrui, Huang Jianping, Li Zhenchun   

  1. School of Geosciences and Technology, China University of Petroleum, Shandong Qingdao 266580, China
  • Received:2015-04-30 Revised:2015-08-30 Online:2015-10-25 Published:2015-11-09

基于双重孔隙理论的各向异性致密油砂岩地震岩石物理模型

黄欣芮, 黄建平, 李振春   

  1. 中国石油大学地球科学与技术学院 山东青岛 266580
  • 通讯作者: 黄建平,男,1982年11月生,2003年获中国科学技术大学地球物理专业学士学位,2008年获中国科学技术大学地球物理专业博士学位,现为中国石油大学(华东)副教授、博士生导师,主要从事岩石物理建模、地震正演模拟及偏移成像研究。Email:jphuangchina@gmail.com
  • 作者简介:黄欣芮,男,1990年6月生,2013年获桂林理工大学地球物理学专业学士学位,现为中国石油大学(华东)地球科学与技术学院硕士研究生,主要从事致密油地震预测评价技术及岩石物理研究工作。Email:xrhuang_school@163.com
  • 基金资助:

    国家重点基础研究发展计划(973)项目(2014CB239006,2011CB202402)、国家自然科学基金项目(No.41104069,No.41274124)、中国石油化工股份有限公司项目(KJWX-2014-05)和中央高校科研业务费专项基金项目(R1401005A)资助。

Abstract:

Tight oil sandstone reservoirs are characterized by low porosity, low permeability, diversified mineral components and complex pore structures, leading to a great challenge for rock physics modeling. Based on the specialty of tight oil sandstone, seismic rock physics model of tight oil sandstone was improved from two aspects, i.e., solid components and pore structures of the rocks, so as to achieve the rock physics modeling for anisotropic tight oil sandstone based on double-porosity theory. Moreover, the influences of four factors, i.e., clay content and type, pore connectivity and type, on rock physics modeling were studied systematically using the new theoretical model. The results show that the clay, pore connectivity and pore type will have great impacts on tight oil sandstone, proving the rationality of rock physics modeling.

Key words: tight oil sandstone, seismic rock physics model, double-porosity model, pore connectivity, anisotropy

摘要:

致密油砂岩储层低孔低渗、矿物组分多样以及孔隙结构复杂,为岩石物理建模带来了较大挑战。基于致密油砂岩的特殊性,从岩石固体组分和孔隙结构2个方面对致密油砂岩地震岩石物理模型做了改进,实现了基于双重孔隙理论的各向异性致密砂岩油储层的岩石物理建模方法,并系统研究了新理论模型下泥质含量和泥质类型、孔隙连通性以及孔隙类型4种因素对岩石物理建模的影响。研究结果表明,泥质、孔隙连通性和孔隙类型对致密油砂岩均会产生较大的影响,证实了所提出的岩石物理建模方法的合理性。

关键词: 致密油砂岩, 地震岩石物理模型, 双重孔隙模型, 孔隙连通性, 各向异性

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