西南石油大学学报(自然科学版)

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大牛地气田上古生界低渗储层综合评价

王永建1,王延斌2   

  1. 1. 华北科技学院安全工程学院,河北三河065201
    2.“煤炭资源与安全开采”国家重点实验室· 中国矿业大学(北京),北京海淀100083
  • 出版日期:2013-10-20 发布日期:2013-10-20

Comprehensive Evaluation of Lower Porosity and Permeability Reservoir
in Upper Paleozoic of Daniudi Gas Field

Wang Yongjian1, Wang Yanbin2   

  1. 1. Safety Engineering College North China Institute of Science and Technology,Sanhe,Hebei 065201,China
    2. State Key Laboratory of Coal Resources and Mine Safety,China University of Mining and Technology,Haidian,Beijing 100083,China
  • Online:2013-10-20 Published:2013-10-20

摘要:

大牛地气田上古生界山1 段至盒3 段为典型的低孔低渗储层,但各段的储集性能仍存在一定差别。因此,从
沉积相、岩石学、成岩作用、孔隙度、渗透率等方面对其进行系统分析,表明山1 段至盒3 段沉积体系由三角洲相向河
流相逐渐演变;储层成岩作用较强,尤其压实作用破坏原生孔隙严重,山1 段至盒3 段压实作用及溶蚀作用逐渐减弱;
孔隙度、渗透率较低,但山1 段至盒3 段呈增加趋势。最后,根据沉积相、成岩作用、孔渗特征、孔隙类型等建立适合研
究区的评价标准,并进行综合评价。结果表明,盒3 段、盒2 段储集性能最好,其次是山1 段,而盒1 段、山2 段最差。

关键词: 大牛地气田, 上古生界, 低孔低渗, 成岩作用, 储层评价

Abstract:

The Shan 1–He 3 member of the Upper Paleozoic in Daniudi Gas Field is a typical lower porosity and permeability
reservoir,but the differences of reservoir properties exists in each member. This paper analyzes reservoir of the Upper Paleozoic
from the aspects of sedimentary facies,diagenesis,character of porosity and permeability,pore type and structure etc. The
result shows that the sedimentary system from Shan 1 to He 3 member changes gradually from delta facies to fluvial facies;
reservoir diagenesis is strong and the compaction damages the primary pore seriously. Compaction and dissolution from Shan
1 to He 3 member weakened. Both porosity and permeability are poor,but are increasing from Shan 1–He 3 member. Finally,
the authors set up the evaluation standards based on Sedimentary facies,diagenesis,porosity and permeability characteristics,
pore type,etc. and give out a comprehensive evaluation. The result shows that He 3 and He 2 members are the best of reservoir
performance,followed by Shan 1 member and He 1 and Shan 2 are the worst.

Key words: Daniudi Gas Field, Upper Paleozoic, lower porosity and permeability, diagenesis, reservoir evaluation