Moodys Investors issued a report right at market open after the deal was announced that said that this deal actually increases SD's leverage ratio and Moodys wouldn't budge on the 'B' rating on SD'S debt. I think that's probably why the stock initially got it's ass kicked.
But I think the market in general likes the deal. WTI is back below $93 while SD is back up to around $6. Seems like $6 has kind of set itself up as a resistance point.