I selected a few US Oil Stocks and compared insider trading (buy/sell) over last 12mo. Data from here - http://www.nasdaq.com/symbol/cop/insider-trades
COP ranked dead last in the net number of shares bought by "insiders" (directors and officers). They might know something we do not and do not seem to have a lot of confidence in the future of COP.
Company # Shares Sold # Shares Bought Net Bought
COP -403812 0 -403812
CVX -336983 23953 -313030
HES -141195 96036 -45159
APA -113732 112653 -1079
APC -58551 115268 56717
DVN -188549 552708 364159
MRO -25991 603221 577230
XOM -344598 1523140 1178542
CHK -416689 3670597 3253908