新疆石油地质

›› 2014, Vol. 35 ›› Issue (5): 1-1.

• 论文 •    

致密砂岩脆性指数测井评价方法 ——以鄂尔多斯盆地陇东地区长7段致密砂岩储集层为例

李华阳1，周灿灿1，李长喜1，李潮流1，石玉江2，王长胜2   

  1. (1.中国石油 勘探开发研究院,北京 100083;2. 中国石油 长庆油田分公司 勘探开发研究院,西安 710065)
  • 出版日期:2019-01-01 发布日期:1905-07-14

Logging Evaluation and Application of Brittleness Index in Tight Sandstone Reservoir A case study of Chang7 tight sandstone reservoir in Longdong area of Ordos basin

LI Huayang1, ZHOU Cancan1, LI Changxi1, LI Chaoliu1, SHI Yujiang2, WANG Changsheng2   

  1. (1.Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China; 2.Research Institute of Exploration & Development, Changqing Oilfield Company, PetroChina, Xian, Shaanxi 710065, China)
  • Online:2019-01-01 Published:1905-07-14

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摘要： 岩石的脆性指数是致密砂岩油气体积压裂设计中应考虑的重要因素之一。通过对岩石弹性参数法和矿物成分法两种脆性指数测井评价方法的分析，并应用岩石力学实验和全岩X衍射分析实验标定，建立了应用常规测井的多矿物模型确定致密砂岩脆性指数的方法。对鄂尔多斯盆地陇东地区长7段致密砂岩储集层实际资料处理结果表明，应用常规测井资料对岩石脆性指数进行评价，可以弥补由于阵列声波（或声波扫描）测井采集井数较少难以开展岩石脆性指数平面分布研究的不足，为致密砂岩油气“甜点”优选提供技术支持。

Abstract: Brittleness index of rock is an important factor for volume fracturing design of tight sandstone reservoir. This paper presents two logging evaluation methods for brittleness index—the rock elastic parameter method and the mineral composition method, and by means of rock mechanics experiment and whole?core X?ray diffraction analysis calibration, develops conventional logging?based multi?mineral model to get the brittleness index of tight sandstone reservoir. The processing result of data from Chang?7 tight sandstone reservoir in Longdong area of Ordos basin shows that using conventional logging data to evaluate the brittleness index of rock could provide technical support for optimizing selection of“dessert”of the tight sandstone reservoir by making up the shortages in difficult study of plane distribution of rock brittleness index due to fewer wells collecting array acoustic or acoustic scanning logging data

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