Research On The Volcanic Rock Reservoir Characteristics Of The Huoshiling Group In Dehui Fault Depression

In this article, through core observation, thin section identification, logging and3dseismic and reservoir physical property data, comprehensive analysis of the application ofDeHui fault depression Huoshiling group of volcanic rock reservoir characteristics has carriedon the detailed study, and the reservoir comprehensive evaluation and favorable reservoirprediction.DeHui fault depression Huoshiling group development of volcanic rocks, volcanic lavavolcanic clastic lava，sedimentary pyroclastic rocks, and volcanic clastic rocks on a total offour class ten, the volcanic lithology and facies, channel facies, volcano eruption facies, fourtypes of facies volcanic sedimentary facies, a total of10kinds of subfacies, DeHui faultdepression fire stone mountain group volcanic rocks in the divided into four cycle. To identifythe volcanic mechanism of acidic volcanic mechanism, neutral alkaline volcanic mechanism,neutral volcanic mechanism, basic volcanic mechanism four types of volcanoes. Developmentof primary pore and secondary pore reservoir space.Through the DeHui fault depression Huoshiling group volcanic rocks in the study ofvolcanic rock reservoir is mainly affected by lithology, lithofacies, cycle, the common controlof volcanic mechanism type conditions. DeHui fault depression rhyolitic tuff and sedimentarypyroclastic rocks become good reservoir has the highest efficiency. The upper subfaciesbecome good reservoir has the highest efficiency, followed by hot pyroclastic flow subfacies.DeHui fault depression Huoshiling group the second cycle and the fourth cycle reservoirproperty is good. Reservoir space in dissolution pore, intergranular pores and secondary poreis given priority to DeHui fault depression rhyolitic volcano clastic rock quality organizationbest reservoir.