be cautious on CDEV might be problems http://ir.cdevinc.com/phoenix.zhtml?c=254391&p=IROL-secToc&TOC=aHR0cDovL2FwaS50ZW5rd2l6YXJkLmNvbS9vdXRsaW5lLnhtbD9yZXBvPXRlbmsmaXBhZ2U9MTE1MzUyNjMmc3Vic2lkPTU3&ListAll=1