Development control factors and digging technology countermeasures of fractured buried-hill reservoirs in Hailar basin

The buried-hill reservoirs in the Hailar Basin mainly develop two types of reservoirs: bottom water massive reservoir and irregular network buried-hills reservoir, and comprehensive treatment technology research has not been carried out since they were put into production and development. Affected by the bottom water coning and fracture development degree, the oil recovery rate of the buried-hill reservoirs is low and the production well opening rate is low. In order to improve the development effect of the oil fields, carry out well-seismic combination fracture description technology research, deepen the understanding of the effective reservoir fractures distribution law, evaluate the development effects of different types of the buried-hill reservoirs, reveal the percolation mechanism and main controlling factors of development, and clarify the direction and potential of comprehensive management. Develop a three-dimensional potential tapping technology strategy centered on the combination of old-well sidetracking and supplementary drilling to achieve high point tapping, water plugging and cyclic production to control water coning, oil well transfer injection and large-scale fracturing to achieve low inefficiency well treatment, forming a comprehensive treatment technology suitable for fractured buried-hill oil reservoirs in the Hailar Basin.