UNSPSC 71121503: Caliper measurement when drilling services

Use of caliper for measuring diameter of wellbore.

UNSPSC 71121503 Caliper measurement when drilling services is a Commodity code that describes downhole surveying and measurement activities performed during well drilling and completion operations. State and local governments procure this service primarily as part of larger well abandonment, remediation, and plugging projects for orphaned oil and gas wells and municipal water infrastructure. The code encompasses measurement of well bore geometry, casing integrity assessment, depth verification, and related data collection that informs drilling decisions and final well disposition.

The recent opportunities block shows no activity directly tagged to UNSPSC 71121503 itself. The source contains multiple well-related solicitations—orphan well plugging from Michigan, water well construction and rehabilitation across Florida, Ohio, Oregon, Georgia, Mississippi, Texas, and California, wastewater pump station services in Florida, and design engineering for water treatment and ASR facilities—but none explicitly cite this Commodity code. The opportunities do reference wireline services, well televising, geophysical logging, and measurement activities as line items within larger scope packages for well abandonment and construction, indicating that caliper and measurement work flows as a component service rather than as a standalone procurement unit at state and local level. The code sees minimal discrete solicitation activity; it appears to remain embedded in broader well drilling and site remediation contracts where measurement is specified but not separately competed.