摘要
Fula坳陷位于苏丹Muglad盆地东北部,面积约5000km2,已发现有较大规模的油气储量。FN油田是到目前为止该坳陷发现的最大油田,储量近亿吨,主要储层是上白垩统Aradeiba组和下白垩统Bentiu组。油田地质地球化学研究表明,水洗和生物降解作用是稠油形成的主要原因。该油田普遍发育有沥青垫,开发难度较大。对该油田两口井原油和油砂详细的地球化学分析以及对沥青垫成因的探讨,为进一步的油气勘探开发提供了决策依据。
Fula depression, with an area of 5 000 km2 where a large scale of petroleum reserves has been discovered, is located in northeast Muglad Basin. Up to now, FN oilfield is the biggest one discovered in this depression, its OOIP is 100 million tons and its main pay zones are Aradeiba Formation and Bentiu Formation of Cretaceous. Synthetic geological and geochemical analyses indicate that the main geneses of heavy oil are water washing and biodegradation. FN oilfield developed some tar mats which make the oilfield difficult to be developed. By detailed geochemical analyses of oil and oil sand samples from two wells in this oilfield, the genesis of tar mats is discussed in order to provide the basis of policy making for exploration and development of this oilfield.
出处
《地球化学》
CAS
CSCD
北大核心
2004年第3期309-316,共8页
Geochimica
基金
中国石油天然气集团公司科技攻关项目(03B60201)
