Simplify the following text for a Grade 6 native English-speaking person.
Original: On August 15 , oil futures rose to $ 74.01 ( USD ) , due to fears of Erin disrupting oil supplies produced on Texan coasts , combined with low oil inventories .
Simplified: On August 15 , oil futures rose to $ 74.01 ( USD ) , because of fears of Erin disturbing oil supplies produced on Texan coasts , combined with low oil supplies .