Analysis On Reservoir Forming Conditions In Deep Layers Of Longshen 1 Well Field In Yingtai Fault

The essay based on the test data, cores, flakes, logging and seismic data ,analyse the reservoir forming conditions and the factors controlling accumulation in deep layers of Longshen 1 well field in Yingtai fault. Hope the research can offer the theory supports for the further exploration and development of Yingtai Fault.The results show that: the abundance of organic matter in this area reached a good - high quality source rocks. The type of organic matter is good. Organic matter reached the evolution of the maturity -high maturity. The total of gas generating amount is about 187.7×1011m3. The resource extent is between 938 ~ 3758×108m3.The favorable lithology in the study area are the rhyolite and sedimentary tuff, corresponding to the advantages sub-phase : the upper part of the overflow sub-phase and volcanic sedimentary rocks containing clastic; finally, the volcanic lithology, volcanic sub-facies, diagenism and tectonic effects impact porosity and permeability of the volcanic reservoir.There are three types oil and gas transporting systems in this area: fault transportation system, unconformity transportation system and reservoir transportation system; during hydrocarbon expulsion period, fault activity is an important channel of oil and gas vertical migration; unconformity transportation system and reservoir transportation systems is the transporting layer of the oil and gas secondary lateral migration. Thickness of regional seal and on the cover layer is large. Local seal is thickness, Directly seal closed well is dense. The area of the broken nose trap that formed earlier than a large number of hydrocarbon expulsion period is 106km2. The amplitude of the trap is 1300m. The preservation conditions are good. The traps can be used as a favorable trap for oil and gas.Longshen 1 Well Field is a structure conglomerate gas reservoir.Its main controlling factors are: high-quality gas source rocks matching with favorable reservoirs, rupture and its evolution, strength of tectonic movement, effectiveness of cap rock, developmental level of carrier bed, inheritance of uplift.