Adaptability Study on Dividing Approach of Accurate Water Injection in Well Block D

Abstract

How to determine the water injection rate of separate layers rationally and effectively is a key part of water injection adjustment. The quality of dividing will directly have an impact on the development effect, especially for multi-layer sandstone reservoirs with severe interlayer heterogeneity. On one hand, the well determined rational water injection rate for a single layer and well can effectively control the rise of water and ease the tension of interlayer contradiction; on the other hand, it can also reduce inefficient water injection and lessen the burden of oil production and surface gathering. Commonly, the effective thickness approach, formation coefficient approach, filtrational resistance coefficient approach and dividing coefficient approach are used to determine the water injection rate of separate layers. The approaches mentioned above are all used to determine the water injection rate of separate layers in Well Block D. By comparing the results and injection profile, the rational dividing approach can be determined.