[Retracted] Intelligent Oil Production Stratified Water Injection Technology

Table 3

Characteristics and defects of existing water injection process.

The serial number	Process name	Process characteristics	Defects
1	Eccentric integration	No card distance limit	Limited efficiency gains
2	Constant flow water distribution	Effective balance of nozzle pressure	Only suitable for large displacement and low precision water injection
3	Storage stratified water self-regulation	The water quantity is set on the ground and executed by downhole equipment	High construction cost and long recovery cycle
4	Two small one	Effectively shorten the clip distance	Low efficiency
5	Concentric integration	Effective injection allocation of multistage	Easy to affect the plug
6	Bridge eccentric	Record single formation data	Extensive water injection
7	Side of the adjustable linkage	Electric control	High construction cost