cross bedcross bit star bitcross fault oblique faultcross flowcross roller bitcross sectioncrossover flangecrowncrown blockcrown block bumpercrown block heave compensator heavecrown drill crowncrown pulley crown shcrown safetycrude crude oil crude petroleumcrude oil analysiscrude oil emulsioncrude oil pipelincrude oil separationcrude oil storage tankcrude oil trapcrude oil treatmentcrumbly claycrumbly soilcrushed zone crushing zonecryogenicsculminationcumulation production cumulative productioncup cup packing packingcurvature of the hole crookedness of the holecurved faultcurvometercutcut oil emulsified oil wet oilcuttercutting air cuttingcutting catchercutting toolcuttings dithch cuttings drillcuttingscuttings logging sieve residue loggingcyclic hydrocarboncycloalkanescyclohwxanescyclonecycloparaffinscyclopentanescyclopropanescylindrical sonde
