中文
In petroleum engineering, high water cut late phase stratified oil recovery technology is an important technical means, which improves the recovery rate and economic benefits of oil fields through refined management and control.
Single-tube layered oil recovery technology
Single-tube stratified oil recovery technology mainly divides the oil well into different production sections by using packers and production devices in the oil well. Each section produces independently without interfering with each other. This technology is suitable for oil wells with high water content. It can effectively isolate oil and water in different layers, reduce inter-layer interference and improve oil recovery efficiency.
Advantages
● The structure is relatively simple, relatively convenient for maintenance and management.
● It can effectively reduce the mutual influence between oil layers and improve the efficiency of oil utilization.
● Through the regulators and packers, the interference factors generated during the dispersion process can be reduced from the source.
Application
It is suitable for oil fields with complex reservoir structures that require careful management.
For high water-cut oil and gas wells, single-tube stratification technology can more effectively perform oil layer stratification.
Multi-tube layered oil recovery technology
Multi-tube layered oil recovery technology uses multiple oil pipes in the oil well, each oil pipe corresponds to a production layer, thereby achieving simultaneous production of multiple layers. This technology is suitable for oil wells with many oil layers and large differences between layers, and can improve the overall recovery rate of the oil wells.
Advantages
● The impact between oil layers is relatively reduced, and the utilization rate is higher than that of single-pipe technology.
● Through the layered synchronous oil absorption and production process, the pressure between oil layers is reduced and the production of bottom oil and gas fields is optimized.
● Reduce product development time and cost, and reduce the construction difficulty of oil development.
Application
It is suitable for oil fields with large oil field area and large wellbore.
For oil fields that need to exploit multiple oil layers at the same time, multi-tube technology can more effectively carry out layered exploitation.
In practical applications, single-pipe stratified oil recovery technology and multi-tube stratified oil recovery technology can be flexibly selected and used in combination according to the specific conditions of the oil well. For example, for oil wells with a high water content, single-tube layered oil recovery technology can be given priority, which can reduce inter-layer interference and improve oil production efficiency by isolating different layers. For oil wells with many oil layers and large differences between layers, multi-tube layered oil recovery technology can be used to simultaneously exploit multiple layers through multiple oil pipes to improve the overall recovery rate of the oil well.
Date: 16 Oct 2024