The article says, clearly, that India is willing to pay $2.7 billion for TEN PERCENT of Tullow's 600M barrel find, valuing it at $27B dollars. That's $45 per barrel. The article further says that that number is likely to change because current appraisal drilling should boost the proven to over 1 billion barrels.
That $2.7B is only going up. the LAPSSET pipeline has turn black gold into tangible, shiny, REAL gold.
That's the Kaabooom, and the math is why management is buying... lots of shares.