Abstract
A gas field is a layered carbonate reservoir which mainly developed crack-dissolution hole. The reservoir heterogeneity is poor, and is influenced by the grooves and dense belt. The gas production profile test datum show that there have bigger differences in vertical stratification gas production, and the layered reserves producing degree is not even. So, firstly this paper applied pressure drop method and instability analysis method to calculate the dynamic reserves, and then, mainly use the pressure drop method to verify the reserves. On this basis, this paper evaluate the reserves producing degree from the area and vertical two aspects, and then find out the areas that are not controlled for drilling infill wells. There is an impermeable interlayer between M1 and M2 (M is a layer name), in order to calculate the production for each layer, we build up a model with two layers. So the flowing mechanism in the layered gas reservoirs without crossflow is analyzed and a closed circle boundary mathematical model considering skin effect established for calculate the production contribution of each layer, providing basis for potential tap** measures in this gas field.
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Liu, Q., Zhang, Y., Wang, K., Jiang, W., Wei, L. (2022). The Computational Model of Dynamic Reserves Producing Degree in Paleocrust Gas Field. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2021. IFEDC 2021. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-2149-0_76
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DOI: https://doi.org/10.1007/978-981-19-2149-0_76
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