摘要
油气钻探中常采用地球物理测井、地质录井和地层重复测试（ＲＦＴ）资料确定储集层流体类型，从而选择试油气层位。在测井曲线质量差且ＲＦＴ测试受到井眼环境和昂贵的花费限制时，可利用储集层岩石中残余烃类的指纹特征有效地检测流体类型。油层岩石抽提物具有原油的典型色谱指纹特征；气层抽提物中轻组分增加，高分子量烃类分布遵循反凝析规律；水层抽提物中饱和烃分布范围通常更窄，与区域上原油的典型色谱指纹特征存在明显差异。利用储集层抽提物含量及其族组成可评价油层的商业价值，并可随钻进行原油密度预测。在辽河坳陷滩海地区海南８井的实际应用表明，这一方法具有经济、快速、精度高的特点。图３参７（梁大新摘）
Petroleum explorers usually assess the type of reservoir fluid (oil/gas/water) and the oil and gas test intervals by a combination of wirelog, geological log and repeat formation tester (RFT). However, it is more difficult to be accomplished when formation intervals exhibit a poor log response and RFT testing has been largely eliminated because of poor hole conditions or expensive cost. Fingerprints of residual hydrocarbons from core or cutting extracts can provide an independent means of identifying reservoir fluid type. Fingerprints of oil saturated intervals are typical of topped (C 15+ ) whole oils, whereas fingerprints of hydrocarbons extracts from the gas dominated rock materials show an abbreviated hydrocarbon distribution and the amounts of higher carbon number hydrocarbons follow the oil and gas retrograde condensate rule. Fingerprints of extracts from water productive intervals usually show a further abbreviated signature, although sometimes exist higher molecular weight hydrocarbons whose distribution is different from that of whole oils. It can also be accomplished to assess reservoir commercial value and to predict the oil density in the drilling process by the amounts and composition of core or cutting extracts. This technique has been applied to Hainan Well 8 and shows a better application effect. Its additional application includes the reevaluation of older wells that lack modern wirelog measurements, but have core or cutting material available.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1998年第5期38-40,共3页
Petroleum Exploration and Development
关键词
储集层
地球化学
油性预测
油气藏
Reservoir, Saturated hydrocarbon, Geochemistry, Detection, Prediction, Oil density, Liaohe depression , Hainan Well 8
