| The paper studies the situation that the water production rate has been in a high stage in Wenmi oilfield. Due to the strong heterogeneity of stratum.confusion water injection,and ruleless well location arrangement, the conventional resistivity logging method response is not clear, and there" re a lot of mistakes in the explanation conclusion. After long-term washing,the main producing reservoir of the oil-filed has undergone many changes in the physical properties, reservoir parameters and logging data. The demands of logging interpretation and water-flood level dividing. Combine with the testing data, the paper make use of the MIT array induction logging to accurately identify the water-flood level of the adjust well, and correctly evaluate the water-flood station.The paper carried out a detailed description of the structure and signal flow of the MIT array induction logging, especially the weak signal detection and signal transmission system of the instrument, studying the resolution and probing depth of the instrument based on the conventional induction logging and Geometric factor, the paper studied the instrument data processing, including date format conversion, borehole correction and resolution focusing and matching, and the achievement of them. Finally the paper studied the use of array induction logging in water-flood layer of Wenmi oilfield, start from the mud invasion characteristics, the paper studied the response of array induction logging in reservoir.water level and water flood level in deferent station, solved the problem like double track, low resistance and thin-layer and so on, and carried out the water-flood level quantitative interpretation based on the receptivity water-flooding experiment. Preparation software to interpretation with the correct rate of89%. Through the above research.the paper solved the key and difficult point of water-flood layer interpretation in Wenmi oilfield, and it has a certain practical value. |
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