Considering the status of separate layer water injection in directional well, the injection tools and pipe string are developed and collocated reasonably.
针对定向井分层注水的现状，对定向井分注工具和分注管柱进行了研制和合理配置。
2
It solved the difficult problems of thermal insulation or separate steam injection in general steam injectionwell, separate steam injectionwell, and side track well.