Shell,one the other companies mentioned took a 2 billion write down on it's US shale properties and BP has been selling off assets not buying them. That leaves Anadarko, Conoco and Chevron in the US and Total and the Chinese. I would put my money on the Chinese or a stock/cash deal from Anadarko. Carl I. wants to take his profit and move on to somewhere else.
The following is public information on the website of the Ohio Dept. of Natural Resources
927 issued horizontal permits so far, 577 horizontal wells drilled, 164 horizontal wells producing and 30 horizontal rigs currently working