The main conclusions are as follows: 1.The sandstones of Yanchang Formation in the south of Ordos basin mainly composed of lithic feldspathic sandstone and feldspathic sandstone.

　
英 美
  • 主要取得以下成果和認識:1.；延長(cháng)組砂巖儲層主要為細粒的巖屑質(zhì)長(cháng)石砂巖和長(cháng)石砂巖；總體上成份成熟度較低、結構成熟度中等。
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