Constructed Annular Safety Valve Element Package

A method of providing gas lift in a wellbore comprising:

• producing a gas from a production tubing located in a wellbore;
• injecting a portion of the gas into an annular space between the wellbore and the production tubing;
• and
• flowing the injected gas through an annular safety valve and into the production tubing;
• wherein the annular safety valve comprises a tubular housing and a sealing package comprising a plurality of annular sealing elements disposed about the tubular housing, and wherein the annular safety valve is configured to allow axial flow of a fluid through an annulus in a first configuration and substantially prevent axial flow of the fluid through the annular safety valve in a second configuration;
• wherein at least one of the plurality of sealing elements comprises a first elastomeric material having a first composition and wherein at least one other of the plurality of annular sealing elements comprises a second elastomeric material having a second composition different from the first composition;
• providing chemical resistance via the first elastomeric material to prevent the at least one of the plurality of sealing elements having the first elastomeric material from becoming brittle upon exposure to the produced gas;
• and
• providing mechanical resilience to the sealing package via the at least one other of the plurality of annular sealing elements having the second elastomeric material.