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.
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。
The continental oil and gas shales are featured by new age, great burial depth, low thermal maturity, and low contents of brittle minerals.
陆相页岩具有“一新一深二低”的特点，时代新，埋藏深、成熟低、脆性矿物含量低等，油气兼产。
The continental oil and gas shales are featured by new age, great burial depth, low thermal maturity, and low contents of brittle minerals.
陆相页岩具有“一新一深二低”的特点，时代新，埋藏深、成熟低、脆性矿物含量低等，油气兼产。
应用推荐