Petroleum production utilizing a salt cavern

A method for the production of petroleum from a petroleum bearing formation comprising:

• a. drilling a wellbore which connects the surface and a salt bearing formation
• b. leaching salt from said salt bearing formation to form a cavern
• c. extending said wellbore into a petroleum bearing formation and
• d. placing said petroleum bearing formation in condition to produce petroleum;

A system for producing oil from a formation comprising

• a wellbore having an opening extending from the surface and in fluid communication with a cavern and a petroleum bearing formation;
• a passageway connecting said cavern with said petroleum bearing formation;
• a wellhead tree positioned proximate said opening;
• a production conduit extending through said wellhead tree and into wellbore for the removal of oil;
• a displacement conduit extending through said wellhead tree and into said wellbore;

A system for producing oil comprising:

• a wellbore connecting the surface, an oil bearing formation, and a cavern in fluid communication, said wellbore having an opening at the surface;
• a check value within the wellbore between said oil bearing formation and said cavern which prevents flow of oil from said oil bearing formation into said cavern and prevents flow from said cavern to said oil bearing formation;
• a wellhead tree proximate to said opening;
• a displacement conduit extending through said wellhead tree in fluid communication with said wellbore;
• and
• a production conduit extending through said wellhead tree and in fluid communication with said cavern.