Ultra-Low Permeability Reservoirs Ways of Well Pattern Optimization Research
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In order to further improve the development effect of H block purpose layer, this paper utilized reservoir numerical simulation technology, using the orthogonal design method to form of well pattern, well pattern parameters, the azimuth and length of horizontal well. Optimization results show that the recovery degree as index, select the following ways as the best reservoir development effect: the five point well pattern forms; horizontal well length of 900-1000 m, well spacing of 200-350m, well array distance of 300-350m; horizontal section perpendicular to the fracture; horizontal section length of horizontal injection wells of 500m. The research results can guide the economic and efficient development blocks in ultra-low permeability reservoirs.
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