Blog · Data quality and reconciliation · Oil and gas services
Why an oilfield services company's coverage numbers depend on a mapping table from every operator name in every source to one identifier: subsidiaries, joint ventures and abbreviations, the unmapped-rig count that says how complete the table is, and how to maintain it as operators merge and rename.
Every oilfield services coverage report rests on one join: your tickets say you worked for "Pioneer Natural Resources", the rig file says the rig belongs to "PIONEER NAT RES USA INC", and nothing matches. Until a mapping table says the two are one operator, the basin coverage figure is wrong by every rig that failed to join. This guide sets out the table and the discipline around it.
| In your tickets | In the rig file | Same operator? |
|---|---|---|
| Pioneer Natural Resources | PIONEER NAT RES USA INC | Yes |
| Diamondback | Diamondback Energy Inc | Yes |
| Endeavor | Diamondback Energy Inc | Yes, after the 2024 acquisition |
| XYZ JV | XYZ Operating LLC | Yes, the operating partner |
| Continental | Continental Resources | Yes |
| Continental | Continental Intermodal | No, a different company |
Names abbreviate, entities merge, joint ventures operate under a partner's name, and two unrelated companies share a word. No string match survives this. A maintained table does.
| Source | Name as it appears | Operator ID | Effective from | Note |
|---|---|---|---|---|
| Tickets | Pioneer Natural Resources | OP-0117 | ||
| Rig file | PIONEER NAT RES USA INC | OP-0117 | ||
| Tickets | Endeavor | OP-0042 | 2024-09-01 | Acquired by Diamondback |
| Rig file | XYZ Operating LLC | OP-0210 | JV, operating partner |
One row per name per source, mapped to one identifier, dated where the mapping changed.
Every month, the coverage report shows, per basin:
Unmapped rigs = active rigs whose operator name has no row in the table
Those rigs are active and invisible. When the count is high, the coverage figure is understated by an unknown amount. When it is low, the coverage figure can be trusted. The count is also the maintenance queue: each unmapped name is a row to add.
billed revenue = mapped tickets + unmapped tickets
Unmapped ticket revenue is usually tiny and unmapped rigs are usually not, because the rig file has more operators than you have customers. That asymmetry is the point: the rigs you cannot map are the operators you have never worked for.
Permian, this month.
| Rigs | Operators | |
|---|---|---|
| Active in the rig file | 312 | 68 |
| Mapped | 289 | 51 |
| Unmapped | 23 | 17 |
| Served by you | 118 | 22 |
Coverage on the mapped set: 118 of 289 rigs, 41 percent. The 23 unmapped rigs across 17 operators are the maintenance queue, and several of the 17 are operators you have never quoted, which is a sales list as well as a data task.
String matching in place of a table. Works for a quarter, then a merger. The table is the method.
Changes without dates. Endeavor's tickets from before the acquisition should map to Endeavor for historical coverage and to Diamondback after. The date makes both right.
Unmapped rigs dropped. Coverage looks better and the report is wrong by exactly the dropped rigs. Show the count.
Joint ventures split. A JV mapped to every partner appears under several operators and inflates operator coverage. Map to the operating partner.
With the table versioned and the unmapped count on the report, maintenance is the new names each month, and the basin coverage figure is one the regional director can quote. Covirage keeps the mapping and reports the unmapped rigs on every file, inside the company's tenant on an enterprise deployment. The oil and gas services page describes the setup, and the basin coverage guide covers the measures the mapping makes possible.
To the operating partner, the one that awards the work. The non-operating partners are recorded as attributes so the relationship is visible, but the rig and the revenue sit under one operator in the roll-up.
Complete enough that unmapped rigs are a small share of active rigs in every basin you care about. The unmapped count on the report is the measure; below five percent of active rigs is usually enough to trust the coverage figure.
Sales operations, with the mapping table as a versioned file. Every rename, merger and new subsidiary is a dated row. The report flags new unmapped names each month so the maintenance is a fifteen-minute task rather than a quarterly project.