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夫特砾岩油藏岩石结构、成分成熟度低 ,胶结物以凝灰质为主 ,具复模态结构 ,储层物性主要受裂缝影响。裂缝对孔隙度贡献较小 ,对渗透率贡献较大。裂缝充填差。多与断层平行 ,纵向上主要发育在砾岩段上部 ,平面上受断层影响明显。根据胶结物的类型、含量及裂缝发育程度 ,将储层划分为裂缝型、孔缝型、孔隙 (洞 )型三类 ,认为哈 2 2断块三类储层均较哈 43断块发育。根据此研究 ,在开发中确定了合理的注采比和压力水平 ,调整了注采层系及系统 ,在应用中取得较好的效果。
The rock structure of Fute conglomerate reservoir is characterized by low maturity of composition and mainly tuff, with complex and modal structure. The reservoir physical properties are mainly affected by cracks. Fractures contribute less to porosity and contribute more to permeability. Poor crack filling. Mostly parallel to the fault, mainly in the upper longitudinal conglomerate section, the plane affected by the fault obvious. According to the types and contents of cements and the degree of fracture development, the reservoirs are divided into three types: fractures, pore seams and pores (holes). All three types of reservoirs are considered to be more developed than Ha-43 blocks. According to this research, reasonable injection-production ratio and pressure level were determined during the development, and the injection-production system and system were adjusted, which achieved good results in application.