CREATE TABLE table_13150274_1 (years_of_operation VARCHAR2, area_of_operation VARCHAR2)

When was the operation in Field 103 executed?
SELECT years_of_operation FROM table_13150274_1 WHERE area_of_operation = "Field 103"
SELECT "years_of_operation" FROM "table_13150274_1" WHERE "Field 103" = "area_of_operation"