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| 珠江口盆地白云凹陷珠江组、珠海组烃源岩倾油倾气性判识 | |
| 引用本文： | 赵红静,张敏,张春明,何敏,朱俊章.珠江口盆地白云凹陷珠江组、珠海组烃源岩倾油倾气性判识[J].地质科技情报,2010,29(2). |
| 作者姓名： | 赵红静 张敏 张春明 何敏 朱俊章 |
| 作者单位： | 1. 中国地质大学研究生院,武汉,430074;长江大学,地球化学系,湖北,荆州,434023;长江大学,油气资源与勘探技术教育部重点实验室,湖北,荆州,434023 2. 长江大学,地球化学系,湖北,荆州,434023;长江大学,油气资源与勘探技术教育部重点实验室,湖北,荆州,434023 3. 中海石油有限公司深圳分公司技术部,广州,510240 |
| 基金项目： | 国家自然科学基金项目 |
| 摘 要： | LW3-1-1井是珠江口盆地白云凹陷白云深水区钻探的一口深水井,在4个目的层钻遇工业气流。该井在中新统珠江组和渐新统珠海组钻遇大套泥岩。烃源岩地球化学分析表明中新统珠江组有机质丰度低,有机质类型为Ⅲ型,Ro0.5%,IH200mg/g,氯仿沥青"A"GC-MS分析结果在TIC上显示的几乎全是芳烃系列化合物,正构烷烃不可见,表征中新统珠江组烃源岩倾气。渐新统珠海组有机质丰度中等,有机质类型为Ⅲ—ⅡB型,Ro介于0.44%～0.54%间,IH主要为200～300mg/g,氯仿沥青"A"GC-MS分析结果在TIC上芳烃化合物和正构烷烃并存,表征珠海组是以倾气为主,但也有部分层段是倾油气的。珠海组在分子组成上较珠江组明显富含正构烷烃,表明珠海组的倾油气性比珠江组强。 |
| 关 键 词： | 倾油倾气性 珠江组 珠海组 烃源岩 白云凹陷 |
Oil/gas Potential Identification for Zhujiang and Zhuhai Formations in Baiyun Depression, Pearl River Mouth Basin |
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| ZHAO Hong-jing,ZHANG Min,ZHANG Chun-ming,HE Min,ZHU Jun-zhang.Oil/gas Potential Identification for Zhujiang and Zhuhai Formations in Baiyun Depression, Pearl River Mouth Basin[J].Geological Science and Technology Information,2010,29(2). | |
| Authors: | ZHAO Hong-jing ZHANG Min ZHANG Chun-ming HE Min ZHU Jun-zhang |
| Abstract: | Economic gas flows are found in 4 goal layers in well LW3-1-1, drilled in Baiyun deep water area, Baiyun Depression, Pearl River Mouth Basin. Thick mudstones are found in Miocene Zhujiang Formation (ZJ) and Oligocene Zhuhai Formation (ZH). The geochemical screening and GC/MS of bitumen analysis reveal that is poor the generative potention and its kerogen type is Ⅲ for the organic matter with R_o<0.5%, and I_H<200 mg/g in ZJ Formation. Moreover, aromatic hydrocarbons are severely dominant in total ion chromatographys (TICs) of GC/MS for bitumen samples extracted from ZJ Formation, indicating its gas prone property. Whereas it involves a good quantity of organic matter and the quality is Ⅱ/Ⅲ kerogen, with R_o as 0.44%～0.54% and IH almost as 200～300 mg/g in ZH Formation. Also there are obvious aromatic and saturate hydrocarbons in TICs in ZH Formation, indicating its gas-prone property and oil/gas property for some layers. According to the molecular composition, the higher ratios of ΣnC/Σ(aro), nC_(12)/Na, nC_(14)/BI, nC_(18)/P, and nC_(25)/CH in ZH Formation than those in ZJ Formation confirm that the former is more oil-prone than the latter. |
| Keywords: | oil/gas potential Zhujiang Formation Zhuhai Formation hydrocarbon source rock Baiyun Depression |
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