Water recycling method for oilfield produced water

The invention belongs to the technical field of oilfield produced water, and particularly provides an oilfield produced water resource utilization method, which comprises the following steps: carrying out gel breaking treatment on oilfield produced water and primary removal of oil and suspended matters, and buffering and storing the treated water in a buffer storage device I; the effluent of the buffer storage device I is subjected to secondary removal of oil and suspended matters through a reinforced oil removal device; the effluent subjected to secondary removal enters a buffer storage device II to be buffered and stored; the effluent of the buffer storage device II is subjected to tertiary removal of oil and suspended matters through a fine filtering device; the effluent subjected to three times of removal is subjected to scaling ion removal through the descaling device, the effluent subjected to scaling ion removal enters the purification and storage device to be buffered and stored, and the effluent of t