Low oil prices and a recent wave of Western airstrikes have sunk ISIS’s oil production by an estimated 63 percent.
Energy Aspects chief oil analyst Amrita Sen told CNBC that ISIS oil production has fallen to about 40,000 barrels per day from a high of 110,000 barrels per day.
“Some of that they probably have to use internally for their own consumption and they’re probably exporting some but again, with oil trading around $40 a barrel, they’re probably not getting as much revenue as they were last summer,” Sen told the network.
French, American and Russian forces have stepped up airstrikes against ISIS after a series of devastating attacks in Paris last week and the downing of a Russian airplane earlier this month.
U.S. forces destroyed over 100 fuel trucks during an airstrike earlier this week, CNBC said.
Russian officials said Wednesday the country’s troops will attack any tanker trucks spotted in ISIS controlled territory in Syria, the AFP reported.
Russian military official Andrei Kartapolov added that Russian forces have destroyed about 500 tanker trucks over the past several days.
Oil production is of the ISIS’s main sources of revenues, with the group currently controlling about 60 percent of Syria’s crude production and 10 percent of Iraq’s crude production.
According to the U.S. Energy Information Administration, Syrian oil production has “essentially ceased” since ISIS began taking over the country’s oilfields in 2014.
Syria has saw its crude production drop to less than 25,000 bpd in May 2015 from a high of 400,000 bpd pumped between 2008 and 2010.
An Islamic State commander who was believed to be behind the slaying of an Apache worker in Egypt last year was reportedly killed last week by Egyptian security forces during an attmpe to arrest him.
Aly Ashraf Hassanein al Gharabli served as the commander for a militant group with links to the Islamic State that claimed responsibility for the 2014 murder murder of William Henderson