Sensitivity Analysis of Offshore Sandstone Reservoir—A Case Study of an Oilfield in the Western Bohai Sea

X oilfield is located in the Western Bohai Sea. During water injection development process, oil well productivity continued to decline. The effect of and increase poor. This time, by analyzing sensitivity reservoir, damage mode reservoir analyzed, reasons for poor are obtained, because strong sensitivity, medium stress corresponding measures suggestions put forward, such as greater than 4500 mg/l salinity injected water, timely supplement formation energy. Provide basis similar fields.