High Resolution Processing Technology And Thin-poor Water-flooded Layer Interpretation Method Research

After exploiting about 50 years from Daqing oil field, output of mostly thicker layers is 90% water nearly, so thin-poor layer become importantly day after day.Through analysis rock and geology characteristic of thin bad in oil field, working from enhances curve gathering quality obtaining, researches adjacent formation to curve influence, reduces the filter to the zone information loss, research to enhance the curve resolution. After researching water-flooded log response characteristic and electric conduction of different type reservoir, takes the geological condition as the restraint, uses the means of the dynamic electronic resistivity droping, and the model with the state space, qualitatives distinction fluid nature, then uses the double water model, to count water saturation by multiple iterative recursion. This wrap interpretive version, enhances the thin-poor layer explanation coincidence rate effectively, has the broad application prospect in the oil field.Conclusion of investigation: controlling quality of data gathering, revising infection of environment, make signals of beds engance. Length of Fourier transform is connected with curve resolution. Curve resolution is lower, window length of Fourier transform is narrower. The method of high resolution processing technology isn' t affected by type of logging instruments. Judge water-flooded of thin-poor layer by based unit of explanation and the model with the state space to the reservoir. Result of layer interpretation participates in parameter calculating, that reduce parameter calculating error.