Research On Micro-pore Structure And Inflatrating Mechanism Of He-8and Shan-1Reservoir In South Of Sulige Gas Field

South of Sulige gas field begin to evaluate the building well area in2010. Currently in Upper he8, shan1, shan2segments, lower Paleozoic ma54, ma55found that several sets of gas-bearing system. Among them, the upper Paleozoic Permian Shihezi and Shanxi section8paragraph1lithologic traps large river delta sandstone gas reservoirs focused exploration target horizons.But the capacity building of the Upper Paleozoic Sulige areas mainly in the north and northeast Sulige gas field, the low level of exploration Suri Glam district, a short pre-evaluation cycle, the scale of development is still a lot of problems:in particular, the reservoir seepage study is the first research and influencing factors of gaps.In this paper, the pore structure characteristics and petrological characteristics of a section8segment Mountain sandstone, sandstone structural heterogeneity, reservoir space types, such as pore throat combinations vertical and horizontal distribution and characteristics of fine studies to determine the most important and most Best holes+gap type, throat and pore throat portfolio distribution; using a variety of analytical test methods and experimental techniques, a section of the flow characteristics of mountain reservoirs with box8and its influencing factors in-depth study.According sandstone rock characteristics, physical characteristics, a combination of the type of pore space, pore structure characteristics, the key parameters that affect the pore structure of sandstone reservoir quality (throat size, the number of effective porosity and throat, throat effective pore volume and pore coordination number throat sorting, pore throat ratio, pore and throat), the study area and the mountains a reservoir box8divided into four categories. Among them, the class I low porosity, good reservoir under hypotonic conditions; II class reservoir is better under low porosity reservoirs, especially hypotonic conditions; III class for medium reservoir; IV class most reservoirs non-effective reservoir, if fractured, can also form an effective reservoir. And found that the development of micro-cracks in the study area, the reservoir fluid saturation movable great impact on the improvement of reservoir connectivity plays an important role.