Relationships between Volcanic Activity and Hydrocarbon Accumulation in Carboniferous Malang Sag of Santanghu Basin

Santanghu Basin has a vast exploration potential of deep volcanic reservoir.Taking two main exploration Malang depression Carboniferous strata group and Haerjiawu,Kalagang group for example,from the lithology,volcanic phase,combining seismic,logging,oil and gas reservoir data analysis and spatial matching between volcanic rocks,volcanic rocks in sedimentary basins of oil and gas accumulation factor are discussed.Impact of volcanic activity in this region a large range,and deep strata are widely distributed,source rocks and volcanic rocks on the distribution of the phase are in good agreement.According to the special nature of volcanic formation,controlling factors of reservoir formation are analyzed.The heterogeneity of rocks,fracture of hydrocarbon migration and accumulation,mainly be distributed tuffaceous shale cap.Particularity of volcanic reservoir in the area shows it has be controlled by source rock reservoir and the main fault.