Field Operations

From Field Ticket to Invoice: The Workflow That Gets Oilfield Service Paid Faster

Every dollar an oilfield service company earns starts as a field ticket written at the wellsite. The companies that bill in days, not weeks, run a tight workflow: complete tickets captured the same day, approved by the right people, and invoiced while the job is still fresh. This guide covers the workflow and the rules that back it up.

What a complete ticket carries

A complete field ticket is a billing and legal document in one. It carries the date, the lease and well identifier, and the location. It describes the work performed, the equipment used with hours or meter readings, and the materials and fluids consumed. It lists crew names and hours, and the rates, or the reference to the agreed rate schedule. And it carries the customer representative's signature, plus proof of delivery for hauled materials.

Each field is a hook for a dispute. No well number, no hours, no signature. The ticket that lacks one of them is the ticket that comes back from the customer's office with questions. The workover planning guide covers how the ticket is built from the job notes taken in the field, and the same discipline applies to every service line.

The rule is simple: if it is not on the ticket, it did not happen. Hours not written are hours not billed. Materials not listed are materials not paid for. The field ticket is written at the wellsite for a reason. That is when the facts are fresh and the customer's representative is standing there to confirm them.

The approval chain

The ticket does not become an invoice on its own. It moves through an approval chain. The operator's field rep approves the work. The service company's office validates rates and totals. Only then does the invoice go out.

The chain only works if it is defined before the job. Who approves extras? Who checks hours against the schedule? Who catches a rate that does not match the contract? Define those roles, and route the ticket the same day it is written. A ticket that sits in a truck for a week is a ticket that gets paid a month later.

Two approvals matter most. The customer's rep confirms the work was done, on location, while the equipment is still rigged. The office confirms the numbers add up, against the contract, before the invoice leaves. Both approvals feed the same file, and the file is the answer to every question that comes later.

Signatures that hold up

The old excuse for paper tickets was the signature. The federal E-SIGN Act, 15 U.S.C. 7001, gives electronic signatures and records the same legal effect as paper. A signature captured on a tablet at the wellsite counts. It is not a lesser form. It is the same legal act, recorded electronically.

That matters for the workflow. The crew can capture the customer's approval on the spot, and the ticket is complete before the truck leaves the location. No photo of a paper ticket, no chasing a signature from the office. The electronic record is the record, and it is the one the invoice cites.

The signature only holds up if the record behind it is sound. The signer's identity, the timestamp, the ticket the signer saw. Those details live in the system of record, and they are what make the signature verifiable months later.

Records that survive an audit

An invoice is only as good as the records behind it. The IRS requires keeping records as long as they may be needed to document income and deductions. The IRS recordkeeping guidance lays out the general rule, and retention periods for tax records are set there and in related guidance. The practical answer: keep the tickets, the invoices, and the proof of delivery longer than you think you need to.

Trucking companies have a second set of records. Drivers and vehicles fall under 49 CFR Part 390, and those records must be kept and available for inspection. The same discipline that keeps tickets in order keeps the DOT file in order: one place, one standard, everything labeled.

An audit asks one question: can you show the work, the approval, and the payment for this invoice? The company that can point to the ticket, the signature, and the record retention schedule answers it in minutes. The company that cannot answers it in weeks, with discounts.

Compressing the cycle

The workflow is short: capture at the wellsite, validate in the office, approve, invoice, collect. Most companies do not lose money because the job was bad. They lose time because the cycle is slow. Standard ticket fields, same-day submission, and a short approval path compress the cycle more than any single fix. The field side of the process, from tickets to customer sign-off, is covered in the tools reference on this site.

That is exactly the flow OpsFlo is built around: tickets, dispatch, and approvals become one billing flow, and the OpsFlo pages on this site walk through how the pieces connect. When the ticket is complete at the wellsite and approved the same day, the invoice goes out while the job is still fresh. Cash follows the work instead of chasing it.

Sources and further reading

• E-SIGN Act: 15 U.S.C. 7001 (electronic signatures)
• IRS: Recordkeeping guidance
• eCFR 49 CFR Part 390: Driver and carrier records