Enrichment Law Of Tight Gas Reservoir In The Second Member Of Yingcheng Formation Of Yingtai Gas Field

Tight gas reservoirs are the main types of gas reservoir on China’s natural gas production to increase reserves in recent years, its complex lithology, reservoir tight gas reservoirs in the longitudinal and lateral change quickly, though with a greater potential for development, but difficult to study gradually improved, especially to study the gas reservoir enrichment patterns are dense areas of focus in recent years, research of volcanic gas reservoirs.The second member of Yingcheng Formation of Yingtai gasfield is nearly two years to discover Jilin Oilfield gas main area of capacity building, reservoir rocks are volcanic rocks main properties of dense, typical dense volcanic gas reservoir rocks. By analyzing the camp Sec tight gas reservoir characteristics, research from the source rocks, micro-structural and sedimentary characteristics, by source rock analysis, implement Sec camp north, central and southern zones of the three source rock favorable; based fine structural interpretation and comparative analysis and gas production, the site is easy to believe that the north-south structural high hydrocarbon migration and accumulation, while the central faults, the source rock and reservoir effective communication, micro-fractures and fracture reservoir nearby, easy quality reservoir formation, the same gas reservoir enriched favorable area; characterized by deposition of understanding in this area, although the camp Sec lithology from the volcanic eruption, but for hydrodynamic transport deposition by the hydrodynamic characteristics of the reservoir sedimentary characteristics influenced by lithology and other sedimentary structures constructed signs analysis, this area is near the source fan depositional environment, the development of four main fan body development zone, where the leading edge of the fan in and fan it easier to form a high-quality reservoir is gas reservoir The main area enriched with by hydrocarbon detection verification, Sec camp in the work area of the southern, central and northern formed by the source rocks, structure, three main factors-rich region under the control of the deposition triple.