October 26, 2026 · 6 min read
How Long Should It Take to Invoice Oilfield Work?
A service company running on paper tickets typically invoices 15 to 45 days after the job. Companies invoicing from signed digital tickets run 1 to 3 days. The difference is not effort; it is whether the ticket the hand filled out is already the invoice line, or has to be found, read and re-typed by someone in the office. On a company doing 60 tickets a month at $1,800 each, a 21-day lag means about $75,600 of earned money is sitting unbilled at any moment.
The benchmarks
These are the ranges we see across Permian service companies, from the ticket date to the date the invoice is sent.
- Paper tickets, re-typed into accounting software: 15 to 45 days. The long tail is tickets that sat in a truck.
- Paper tickets, photographed and emailed to the office: 7 to 20 days.
- Digital tickets without a link to invoicing: 5 to 10 days.
- Digital tickets signed on site that become the invoice: 1 to 3 days. Daily invoicing is normal.
What the lag costs
The math is simple. Unbilled float equals tickets a month × average ticket value × (days to invoice ÷ 30). That is the cash you have earned that is not in your account, and it is a permanent balance, not a one-time delay: as long as the lag stays at 21 days, that money stays out.
Cutting the lag from 21 days to 3 on the example above frees about $64,800 once, for good. For most companies that is the difference between running a line of credit and not.
There is a second cost. Operators' AP departments pay on terms from the invoice date, not the job date. Every day of lag on your side adds a day to theirs.
Why the office cannot fix it with effort
Owners usually try to close the gap by pushing the office harder: invoice Fridays, ticket deadlines, a bonus for clean weeks. It helps for a month. The structural problem is that the office is re-creating information that already exists on the ticket, and a ticket that is unreadable, missing a signature, or still in a truck cannot be invoiced no matter how fast the office works.
The free Paperwork Cost Audit on this site puts a number on the re-typing time alone; ten office hours a week at $24 is about $12,500 a year before the float.
How companies get to three days
The companies that get there make three changes, in this order.
- The ticket is filled on the phone at the job, from the customer's price book, so the line items and rates are already right.
- The company man signs on the phone. The signature is the approval the operator's AP will ask for, and it is on the ticket the moment the job ends.
- Approved tickets become invoices with the signed ticket as backup, go out with a pay link, and post to QuickBooks Online. Nobody re-types.
What to measure
Track two numbers weekly: median days from ticket date to invoice date, and the count of tickets older than seven days that are not yet invoiced. The second one is where the money hides, and it is the first number worth putting in front of the office every Monday.
Questions
Common questions
Is same-day invoicing realistic for a small company?
Yes, and small companies usually get there fastest because there are fewer approval steps. The requirement is a signed ticket that is already the invoice line.
Will operators accept invoices faster?
Operators pay on their terms from the invoice date. Sending sooner starts their clock sooner; it does not shorten their terms.
What about invoices that need a PO or AFE number?
Capture it on the ticket. A ticket with the AFE, lease and PO already on it is why the invoice goes out the same day instead of waiting on a phone call.
