| Oil recovery method | Characteristics |
| Water injection | Low cost, mature technology, wide application. |
| Gas injection | Compared with water injection, high inspiratory index, reduced starting pressure, high injection capacity, easy gas flow, and key gas source. |
| Microbial drive | The investment cost is low, the energy consumption is less, oil recovery mechanism is complex, difficult to control, the effective bacteria reproduction will block the formation, produce H2S and other harmful gases. |
| Chemical drive | The cost is relatively high, the polymer viscosity is high in the low permeability reservoir and injection ability is poor, and the application of the surfactant agent and its compound system has a large space for development. |
| Explosion in the layer | The hydraulic fracturing technology is used to press the deflagration drug into the oil layer crack, which produces a large number of cracks around the main joint after the deflagration. |
| Shock wave method | The vibration force is introduced into the stratum to reduce the capillary force, reduce the fluid adhesion of the rock, and merge the oil droplets. |
| Electrodynamic method | Using the DC electric field to the oil layer electric drive, electrochemistry and electric heating, improve the seepage characteristics and fluid flow characteristics of the oil layer, less investment, simple equipment, convenient construction, no pollution. |