Volcanite lithology log identification method and the control of volcanite to reservoir property

Igneous lithology is the base of dividing lithofacies and studying on accumulation space types and growth history.At present,petrophysical property and FMI are two aspects which have been researched incompletely for the identification methods of vulcanite lithology.Based on the research on rock composition and petrophysical property,herein this article,suggestions are given,taking Xushen gas field in Daqing as an example,to use conventional logging and FMI to discriminate the lithology.According to the relative research and genetic relationship between different lithology association and facies,the igneous lithofacies of single well is defined and the control action of different subfacies' parts to physical property is also researched.The field practice demonstrates that the application result of this method is very good in the research of igneous reservoir in Daqing,and this method can be taken as references for the research on reservoirs of similar type.