Really that could be the most important question, if Russia or China were to be able to refine the oil that Venezuela has then at least that end of the problem is solved for them.   They just have to handle the production side, I have heard Russian personal will be deployed to Venezuela to ensure production continues and the country can meant its payment obligations
How the worlds largest reserve nation for oil comes to have such a problem when its entirely foreseeable has to be some appalling planning, even excluding every other reason this is enough reason for resignation and would be patriotic imo but these people never go easily or with any larger regard for others sadly

I do know India has developed a large capacity to refine crude oil and I guess they are a potential customer, they have little oil of their own to process.   However they are already a main customer to Iran who are not lacking in capacity so it would come down to competitiveness.   I also believe the world economy is not growing as fast as it could or should be, generally this is bearish for oil pricing but efficiency is always bullish