Cover
Jan. 14, 2022
Cover [Abstract]  
Entity Registrant Name Blue Dolphin Energy Company
Entity Central Index Key 0000793306
Document Type 8-K
Amendment Flag false
Entity Emerging Growth Company false
Document Period End Date Jan. 14, 2022
Entity Incorporation State Country Code DE
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity File Number 0-15905
Entity Tax Identification Number 73-1268729
Entity Address Address Line 1 801 Travis Street
Entity Address Address Line 2 Suite 2100
Entity Address City Or Town Houston
Entity Address State Or Province TX
Entity Address Postal Zip Code 77002
Local Phone Number 568-4725
City Area Code 713