The System Decomposition Research And Application Of The Skin Factor

The skin factor in formation testing is the total skin factor which includes many kinds of skin factors produced, cannot evaluate the real pollution degree. Only the real skin factor can be changed through the increase production measure. Decomposing the skin factor effectively, getting reservoir real skin factor is the urgent need of increase production measure. This thesis concerned the algorithm foundation from the skin factor decomposition principle to obtain, had analyzed the relations between the well completion parameter and the skin factor, had determined the gain method of the essential parameter in the skin factor decomposed, then decomposed the skin factor, got the reservoir real skin factor and the pollution radius, the judgment reservoir pollution degree. Has carried on the forecast in this foundation after the measure output and increase production rate, provides the reliable basis for the measure implementation. Using the skin factor system decomposition method, may determine the main reason of the skin effect in the entire process from the well drilling to produce, provide the basis for chose the most effective measure method. Good effect has obtained in carrying on the decomposition 37 skin factors in oil field, and in the forecast to the measure effect, which has further confirmed the skin factor system decomposition method reliability.