actually to burst the bubble oil production does not work like that. Its as simple as we produce this much and we sell that much. You need to have a constant supply of crude oil which Pakistan does not have in sufficient quantity or has not been extracted yet. Secondly there are many international regulations on the amount of production you can export. If Pakistan starts selling oil like that international prices will take a beating. Another point is that these plant almost never run at full capacity and im not even sure the number you have given are right. The look a big over inflated. One more thing is the willingness of countries to take oil from Pakistan, there are many security and long term stability issues.
Pakistan Oil - production - Economy
Are you sure these figures are not per year rather than per day. In 2010 till date the whole of Pakistan only produces around 60000 barrels per day. So its much more that you think when its comes to oil production. Achieving the numbers you have given will take a lot of work and luck. With such numbers Pakistan will almost produce more than half of India's production which is highly unlikely but again is possible.
Please always use the "National Figures" as provided by the Government of the Country.
Here are some National figures :
Source : Pakistan Economic Survey 2009-2010 - Annual Figures for 2008-2009
Crude Oil : Imported 62,115,000 Barrels, Internal Production : 24,033,000.
So total Crude Refined in Pakistan : 86,148,000 Barrels
Byco Refinery Production : 100,000 Barrels per day i.e. 36,500,000 Annually = about 5 Million Tons
Refined Products : Imported 9,974,000 Tons, Internal Production 9,828,000 Tonnes
As such Byco is a good sized Refinery to meet Pakistan’s Internal Requirement.
There are no International Regulations for the Refining the
AMOUNT of Petroleum Refining by any nation. IOW if a specific Refinery can refine Crude at a cheaper rate then so be it. The rest of the World will only be too happy to get cheaper products. The Regulations are for Technical Purposes i.e. Sulphur, antimony etc. content.
You must be aware that the Reliance Refinery Complex processes about 1,200,000 Barrels a day. The next door Essar Refinery processes about 300,000 Barrels a day and it is being expanded to process possibly 400,000 to 600,000 Barrels a day.
As such all three Refineries in Pakistan can go Full Throttle without the need of any International Approval. They can conume whatever quantity the want to in Pakistan and Export the Rest.
Where or Whether or whatever Pakistan's Refineries procure the Crude Oil is for them to decide and neither you nor I have any locus standi to question it!