The Paleogene Qianjiang and Xinggouzui Formations with abundant hydrochemical data are main objective intervals targets for hydrocarbon exploration in Jianghan Basin.
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2. 第二含油层系潜江组的原油，一是来自本组未成熟烃源岩，二是来自下伏新沟嘴组下段烃源岩。
Oil in Qianjiang Formation in the second oil bearing series comes both from an immature source rock in this Formation and from the Lower Xingouzui Formation source.
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3. 第二含油层系潜江组的原油，一是来自本组未成熟烃源岩，二是来自下伏新沟嘴组下段烃源岩。
Oil in Qianjiang Formation in the second oil bearing series comes both from an immature source rock in this Formation and from the Lower Xingouzui Formation source.
