春风油田石炭系火山岩油气层综合判识研究

Study on Hydrocarbon Reservoir Synthesize Distinguish of Carboniferous Volcanic rock from Chunfeng Oil Field

火山岩油气藏是一种特殊类型油气藏,受岩性、岩相、储集空间类型等因素影响较大。常规测井仅能对储层进行评价,录井仅能对岩性及油气显示进行评价。利用测录井资料无法快速判识油气层现状,制约了现场完井方式及试油方案的及时决策,并影响钻井周期、成本及对区块的潜力评价。通过岩心描述、镜下薄片储集空间及含油性观察,结合测井解释和试油结果,总结了春风油田石炭系火山岩油藏岩石类型及含油性特征;火山岩储集空间类型、影响因素、识别方法及物性有效性;孔隙、裂缝等储集空间有效性电性识别方法;建立了春风油田石炭系油气层综合判识准则。本次研究可快速对该区石炭系完钻探井进行油气层综合判识,指导现场完井方式决策,提高勘探效益。

Volcanic reservoir is a kind of special type petroleum reservoir,which is influenced by lithology,petrofacies and reservoir space type.Conventional logging only evaluate the reservoir,logging just evaluate the lithology and shows, so it hardly distinguishes the hydrocarbon reservoir status rapidly, restricts the decision of spot completion method and formation testing progect,and influences drilling period,cost and potential evaluation to the block.Based on the core description, the observe of microscopically slice’s reservoir space and oiliness,combined with well logging interpretation and formation testing result,summarize the rock type and oiliness of Carboniferous Volcanic rock reservoir in Chunfeng oil field,establish the synthesize distinguish criterion of Carboniferous hydrocarbon reservoir.This research can distinguish the reservoir rapidly,direct the spot completion method decision,improve the exploration benefit.