中国近海海域主要含油气盆地目前找到的原油，依成熟程度可分为未成熟、低成熟、成熟和高成熟原油四大类。
Crude oils found in the major Chinese offshore petroliferous basins can be classified into four categories based on their maturity, I.
中国近海海域主要含油气盆地目前找到的原油，依成熟程度可分为未成熟、低成熟、成熟和高成熟原油四大类。
Crude oils found in the major Chinese offshore petroliferous basins can be classified into four categories based on their maturity, i. e. immature, low mature, mature and high mature oil.
鉴于未成熟生物气源岩有机质赋存形式的特殊性，提出了柴达木盆地东部第四系生物气源岩的有机质丰度评价标准。
Based on the special existing form of immature source rock of biogenic gas, the assessment system of organic matter abundance for quaternary source rock of biogenic gas in Qaidam basin is suggested.
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