How does an oil well packer work?

Answer 1

An oil well packer is a device used to create a seal between the wellbore and the production tubing, isolating sections of the well to prevent fluid movement. It typically consists of a rubber or elastomeric element that expands when hydraulic pressure is applied, pressing against the well casing. This sealing action helps to control fluid flow, protect the well from contamination, and enable efficient production. Pack-offs can be set at various depths to manage different zones of the reservoir.