Asphaltene stabilization in petroleum feedstocks by blending with biological source oil and/or chemical additive

A petroleum feedstock comprising stabilized asphaltenes comprising:

• a petroleum feedstock containing asphaltenes;
• an effective amount to improve the stability of asphaltenes in the petroleum feedstock of:
• at least one biological source oil that is an algae oil;
• and
• at least one chemical additive to improve the stability of asphaltenes in the petroleum feedstock, where the chemical additive is an alkylphenol-based resins, where the alkyl group is selected from the group consisting of octyl, nonyl, and dodecyl, where an alkylphenol is reacted with an aldehyde in the presence of a sulphonic acid, where the alkyl-phenol based resins are used alone or in conjunction with amines;
• where the asphaltenes are synergistically stabilized in the petroleum feedstock which is defined as to an extent that is greater than the additive of:
• the stabilizing achieved with only the same amount of the biological source oil used separately, added to
• the stabilizing achieved with only the same amount of the chemical additive used separately.

A petroleum feedstock comprising stabilized asphaltenes comprising:

• a petroleum feedstock containing asphaltenes;
• an effective amount to improve the stability of asphaltenes in the petroleum feedstock of:
• at least one biological source oil that is an algae oil;
• and
• at least one chemical additive to improve the stability of asphaltenes in the petroleum feedstock, where the chemical additive is an alkylphenol-based resins, where the alkyl group is selected from the group consisting of octyl, nonyl, and dodecyl, where an alkylphenol is reacted with an aldehyde in the presence of a sulphonic acid, where the alkyl-phenol based resins are used in conjunction with triethylenetetramine (TETA).