dynamic lift vertical lift tool

摘要

Vertical Lifting Tool with Dynamic Sealing Feature The present invention relates to a vertical lifting tool having a hinged seal that can be adjusted against the fish when the fish is engaged by the tool. The seal can be triggered from swelling due to exposure to well fluids or mechanically or hydraulically from the supporting column. The use of external spears or anglers with hinged sealing feature is considered. If a swelling design is used, it can respond to water or hydrocarbons found underground.