| Based on the current exploitation situation and the problems faced in Chang 6 reservior,it is necessary to analysis development mode, determine layer series of development and research well pattern, pressure system and technical policy for the optimum development plan in Zone JiYuan.Numerical model, using the static and dynamic data, is built to analysis the correlation between fracture direction and injection-production pattern and optimize well pattern.The result of simulation indicates that 0 degree is the best included angle between fracture direction and injection/production well line direction among the degrees of 0, 45 and 90 degree. Numerical simulation and petroleum reservoir engineering method about well pattern demonstrate that diamond nine-spot well pattern is proper in early development stage. Finally,the arrangement is determined that the well line is in the direction of NE 55 degree, well spacing in the injection well line is 240 meters and line spacing is 80 meters. Well deliverability determined by several methods is 0.41 t/d and injection flow rate is 3.1 m3/d. |
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