Well-drilling supervision services76431500-8Rig-positioning services
Well-drilling rig monitor services76431600-9Rig-positioning services
Well-logging services76440000-9Rig-positioning services
Cased hole logging services76441000-6Rig-positioning services
Open hole logging services76442000-3Rig-positioning services
Other logging services76443000-0Rig-positioning services
Well-management services76450000-2Rig-positioning services
Well-support services76460000-5Rig-positioning services
Well-testing services76470000-8Rig-positioning services
Well fracture testing services76471000-5Rig-positioning services