About 30
Here are some links:
http://www.mees.com/Energy_Tables/crude-oil.htm
http://tonto.eia.doe.gov/dnav/pet/pet_crd_crpdn_adc_mbblpd_m.htm
===================================== http://www.qatarliving.com/node/58409
About 30
Here are some links:
http://www.mees.com/Energy_Tables/crude-oil.htm
http://tonto.eia.doe.gov/dnav/pet/pet_crd_crpdn_adc_mbblpd_m.htm
===================================== http://www.qatarliving.com/node/58409