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《World Well Logging Technology》 2018-03
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Dense sandstone reservoir classification and productivity prediction of Fuyu oil layer in Longxi area

The Fuyu oil layer in Longxi area belongs to low porosity and ultra-low permeability dense sandstone reservoirs. In order to predict the productivity of dense sandstone reservoirs, this paper analyzes various data such as cores, mercury intrusion, and test oils to optimize parameters such as physical properties, pore radius, and brittleness index, which affect the productivity of dense sandstone reservoirs. Second-order clustering is applied analytical methods classify reservoirs. On this basis, in order to be able to rapidly guide the selection of fracturing horizons and production capacity of the test wells in production, Select well logging parameters such as natural gamma, lithologic density and deep laterality, which are sensitive to reservoir lithology and oil content. The reservoir rock skeleton evaluation index and oiliness evaluation index were constructed, and reservoir classification standards were established. Using this criterion, reservoirs were classified in the fracturing test wells of the Fuyu oil layer in the Longxi area. Based on the correlation analysis results of different types of reservoirs and oil production strengths, a productivity prediction model for ordinary fracturing and seam fracturing of straight wells was established. The production forecast of dense sandstone reservoirs provides new ideas.
【Fund】: 国家科技重大专项大型油气田及煤层气开发 课题六低渗、特低渗复杂油藏规模有效动用关键技术项目(2017ZX05013-006)
【CateGory Index】: TE328;P618.13
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