chk-20160331.xmlEX-101.INS - XBRL INSTANCE DOCUMENT
chk-20160331.xsdEX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
chk-20160331_cal.xmlEX-101.CAL - XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
chk-20160331_def.xmlEX-101.DEF - XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
chk-20160331_lab.xmlEX-101.LAB - XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
chk-20160331_pre.xmlEX-101.PRE - XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT