Evaluation Of Reservoir Damage In Chaoyang Valley Oilfield

With the extension of water injection development time and oil layer pollution in chaoyang valley oilfield,the decrease of core permeability also affects the production capacity of the well.This paper based on the different level of core permeability damage evaluation experiment and rock sad defuse plugging effect evaluation experiment,a certain index curve of water injection and damage and indoor experiment data and field injection water absorption ability of the curve.By collecting general data of chaoyang valley oilfield or other oilfield,the paper analyzes the changes of water absorption capacity of water injection Wells.Finally,after fulfilling the different level of permeability of core damage experiments and the experimental data of clear and reduce reservoir damage of plugging agent,the best solution and to determine certain index curve of water injection and damage,eventually come to chaoyang ditch of the main causes of oil field injection water absorption capacity changes.