西南石油大学学报(自然科学版)

• 地质勘探 • 上一篇    下一篇

腰英台油田青山口组储层裂缝特征研究

王时林1,秦章晋2   

  1. 1. 中石油西南油气田分公司勘探事业部,四川成都610041
    2. 中石油冀东油田分公司勘探开发研究院,河北唐山063004
  • 出版日期:2015-02-01 发布日期:2015-02-01
  • 通讯作者: 秦章晋,E-mail:qinzhangjin@sina.com

Research on Fracture Characteristic in Reservoir of Qingshangkou
Formation,Yaoyingtai Oilfield

Wang Shilin1, Qin Zhangjin2   

  1. 1. Exploration Division,Southwest Oil and Gas Field Company,CNPC,Chengdu,Sichuan 610041,China
    2. Exploration & Development Institute,Jidong Oilfield Company,CNPC,Tangshan,Hebei 063004,China
  • Online:2015-02-01 Published:2015-02-01

摘要:

腰英台油田位于松辽盆地南部中央拗陷区,其中的1 号区块∼301 号区块的上白垩统青山口组砂岩为裂缝性
低渗储集层,裂缝较为发育。通过对岩芯的系统观测、薄片裂缝观察、测井资料解释、碳氧同位素测试等手段对裂缝进
行了系统研究,结果表明:腰英台油田青山口组裂缝发育,其中发育程度最高的为青山口组一段II 砂组;裂缝长度的
主要分布在5∼15 cm,宽度主要分布在0.1∼1.0 mm,密度平均0.41 条/米,大部分裂缝都被全充填,充填物以方解石为
主,裂缝倾角主要分布于75? ∼90? ,裂缝方位主要共有4 组,分别是NWW(280?)向、NNW(345 ?)向、NNE(18?)向
和NEE(76?)向;微裂缝以宽度小于0.5 mm 为主,被方解石或者有机质充填或者半充填,裂缝性质以剪切缝为主,部
分发育张性缝;裂缝发育期次主要分为两期,分别为嫩江末期和明水末期。

关键词: 腰英台油田, 青山口组, 裂缝特征, 储集层, 测井

Abstract:

Abstract:Yaoyingtai Oilfield is located in the central depression of Shongliao Basin,and the reservoir of Upper Cretaceous
in Qingshankou Formation in the 1∼301 blocks of Yaoyingtai Oilfield is fractured low-permeability reservoir and develop
fracture quite. This paper carries out systematical research about fractures through core observation,slices analysis,the imaging
logging data and carbon and oxygen isotope analysis. The study shows that the fracture developed in Qingshankou Formation
of Yaoyingtai Oilfield,and the highest degree of development in Qingshankou Formation is II sand set in No.1 section of
Qingshankou Formation. Other findings include that the length of fracture distributes between 5∼15 cm and the width distributes
between 0.1 1mm and the average density is 0.41 strips per meter. Most of fractures are full filled and the majority of fillings
is calcite with fracture dip between 75? ∼90? ,the orientation of fracture has mainly 4 groups which includes NWW(280?),
NNW(345?),NNE(18?),NEE(76?). While the width of micro-fracture rests under 0.5 mm and filled or half-filled by
calcite and organics. The main fracture properties is shear fractures and other part of fracture properties is tension fracture. The
fractures has two develop stages,one is formed in the late tectonic movement of the nenjiang formation,and another is formed
in the late tectonic movement of MingShui formation.

Key words: Yaoyingtai Oilfield, Qingshankou Formation, fracture characteristics, reservoir, logging