Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Sep. 30, 2020
Nov. 10, 2020
Cover [Abstract]    
Entity Registrant Name Black Ridge Oil & Gas, Inc.  
Entity Central Index Key 0001490161  
Document Type 10-Q  
Document Period End Date Sep. 30, 2020  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity's Reporting Status Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business true  
Entity Shell Company false  
Entity File Number 000-53952  
Entity Interactive Data Current Yes  
Entity Incorporation, State or Country Code NV  
Entity Common Stock, Shares Outstanding   2,743,759
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2020