深层缝洞型碳酸盐岩储层岩石物理力学特性试验研究
DOI:
CSTR:
作者:
作者单位:

1.中国石油天然气股份有限公司塔里木油田公司;2.中国石油大学华东深层油气全国重点实验室

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学(42472195);中国石油塔里木油田分公司揭榜挂帅项目(671023060003)


Experimental study on rock physical and mechanical properties of deep fractured-vuggy carbonate reservoirs
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    深层缝洞型碳酸盐岩油藏资源量丰富,勘探开发潜力巨大,岩石物理力学特性是储层精确评价的基础。为此,以塔里木盆地富满地区满深A井区一间房组储层为研究对象,通过扫描电镜、铸体薄片实验、物性测试和三轴压缩实验等开展储层岩石物理力学特性研究,研究结果表明,研究区储层整体发育生屑、砂屑滩相等灰岩类有利储集相带,储集性好;储集空间主要以孔洞和裂缝为主,溶蚀孔洞,粒间溶孔、微孔、微裂缝较发育,且孔喉相对比较粗大,连通性较好;储层有效孔隙度为1.8%~5.2%,渗透率为0.1×10-3~1×10-3μm2,中高渗储层占比约65.7%,整体连通性好,非均质性极强;岩石弹性模量为38.98~61.29 GPa,泊松比为0.213~0.353,随着围压的增大,岩样峰值强度增大,但增幅逐渐减小,弹性模量则呈现先增大后减小的趋势。研究成果可为深层碳酸盐岩油气高效勘探开发提供岩石物理力学数据基础。

    Abstract:

    Deep fractured-vuggy carbonate reservoirs are rich in resources and have great potential for exploration and development. Rock physical and mechanical properties are the basis for accurate reservoir evaluation. Therefore, the reservoir of Yijianfang Formation in Manshen A well area of Fuman area in Tarim Basin was taken as the research object, and the physical and mechanical properties of reservoir rock were studied through scanning electron microscopy, casting thin section experiments, rock physical property analysis and triaxial compression experiments. The results show that the reservoir in the study area develops bioclastic, sandy beach and other limestone types, which are favorable reservoir facies belt and good reservoir. The reservoir space is mainly composed of pores and cracks, with well-developed dissolution pores, intergranular dissolution pores, micropores and microcracks, and relatively large pore throats and good connectivity. The effective porosity and permeability of the reservoir are in the range of 1.8 % ~ 5.2 % and 0.1 × 10-3 ~ 1 × 10-3μm2, respectively. The proportion of medium and high permeability reservoirs is about 65.7 %, with good overall connectivity and strong heterogeneity. The elastic modulus of rock is 38.98~61.29 GPa, and the Poisson 's ratio is 0.213-0.353. With the increase of confining pressure, the peak strength increases, but the increase gradually decreases, and the elastic modulus increases first and then decreases. The research results can provide rock physics and mechanics data basis for efficient exploration and development of deep carbonate oil and gas.

    参考文献
    相似文献
    引证文献
引用本文
分享
相关视频

文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2025-01-20
  • 最后修改日期:2025-03-13
  • 录用日期:2025-06-19
  • 在线发布日期:
  • 出版日期:
文章二维码