EVALUATION TECHNOLOGY OF FORMATION DAMAGE CAUSED BY THE QUALITY OF FLOODING WATER

The evaluation technology of formation damage causing by the quality of flooding water was studied, and the main mechanism of the causing in the process of water injection was analyzed. The calculating method of skin factor, brought by each damage factor, was put forward. Take Lijin Oilfield as an example, the situation about formation damage was analyzed. It shows that the formation damage caused by water flooding in Lijin Oilfield is very severity, which damage mechanism is mainly brought by solid phase. The effect of latency mechanism in Lijin Oilfield is smaller.