By Amanda Leon, founder of OilMoney.io. Houston-raised, came up in the Houston marketing team of Vallourec, and has run Unrth, a brand and growth studio for oil and gas and industrial companies, since 2017, with her boots on client locations in Midland and Odessa. Last reviewed October 20, 2026.
An MSA, or master service agreement, is the standing contract an operator signs with a service company before that company works for it. It sets the terms every later job runs on, including insurance minimums and indemnity, and every purchase order and field ticket after it has to fit inside those terms. A signed MSA makes you eligible for work. It doesn't put your name on anybody's call-out list.
No task is beneath any of us, me included. Years ago I'd promised a client a deadline on a website, and then my developer bailed on me. So I coded the entire site myself, because I'd given my word on that date. An MSA is the paper. It spells out what you're allowed to do for an operator and who pays when something goes wrong. Keeping your word on location, job after job, is what gets you called back.
What a Master Service Agreement Covers
Think of the MSA as the pad you build before the rig moves in. It gets built once, and every job after that sits on top of it. Foley and Lardner laid out what an operator's MSA sets in a May 2026 article with a title worth taping to your dash, "Your MSA Is Not a Formality":
- Insurance minimums. The types of coverage you have to carry and the limits on each.
- Indemnity. Which side pays for what. Foley names knock-for-knock indemnity.
The contract also sets the scope of work, and that scope follows you all the way to the field ticket.
Why Many Operators Won't Negotiate Their MSA
Foley also wrote that operators frequently present their standard MSA as non-negotiable: take it or leave it. When the paper can't change, it's tempting to sign it like a delivery ticket and get back to work.
Don't. You may not be able to change a word, but you can know what you're agreeing to before the first job. That tells you what insurance to carry and what risk sits behind every rate you quote. Now and then, it tells you which customer's paper you'd rather not sign at all.
Indemnity and Insurance: The Parts to Have Reviewed
Indemnity
This is the clause that matters after a bad day on location. Texas adds a layer: Foley describes the Texas anti-indemnity statute as limiting what those indemnities can enforce. How that applies to your contract is a question for a lawyer.
Insurance
The MSA sets the minimum insurance types and limits you have to carry. Line your coverage up with it before the first job, because the same paperwork can get checked again when the operator grades you as a vendor.
An oil and gas attorney, not a salesperson or a marketer, is the right person to review your indemnity and insurance terms before you sign. That rules me out, too. I build names; I don't read contracts for a living. This page is general information, not legal advice.
How the MSA Fits With the Approved Vendor List
The MSA and vendor approval are separate pieces of paper, but they can meet in the same score. Apache's July 2025 supplier rules fold MSA and insurance checks into the ISNetworld grade its on-site contractors have to keep, right alongside their safety record. The other operators' gates are in how to get on an operator's approved vendor list.
At least one supplier puts both jobs in one seat. B-P Supply's September 2026 posting for a business development rep in Monahans asks the hire to lead new customer MSAs and get the company approved as a vendor, and our guide to oil and gas procurement walks through the rest of that posting.
How Field Work Runs Under the MSA: POs, AFEs, and Tickets
Once the MSA is signed and you're approved, the day-to-day runs on purchase orders, the operator's AFE (authorization for expenditure), and your field tickets. The MSA sets the outer fence. The PO and the AFE say what this job is and which budget it bills to. The ticket has to match all three.
Aimsio, which sells field ticketing software, published a list in July 2026 of common reasons operators send tickets back:
- The wrong signer, or an approver without authority at that dollar level
- Work outside the PO or contract scope
- Charges billed to the wrong PO or AFE
It adds that many customers require a second signature above a set threshold. The fix is boring. Before the job starts, confirm the PO number, the AFE, who signs, and the dollar level that needs a second signature, and write it down where your crew can see it.
Why MSAs Are Slow to Win
If MSAs were easy, every shop in the basin would have a drawer full. Drilling Tools International, a publicly listed rental-tool company, reported more than 340 master service agreements in its annual report for fiscal year 2025 and called them hard and slow to obtain. That same report lists a 40-person sales force, split into city-sales and field-sales teams. Once you're in, the relationship can run long: the company describes a first-call supply agreement with one of its largest customers, in place since 2013 and extended through 2026.
Why a Signed MSA Doesn't Mean the Phone Rings
An MSA makes you a company the operator is allowed to call. It doesn't decide who they do call. On the locations we've stood on in Midland and Odessa, the call-out goes to the name somebody remembers when the job comes up, and a contract sitting in a file doesn't help anyone remember you.
Signed paper doesn't stay put, either. Foley and Lardner wrote in July 2026 that after an acquisition, the buyer typically reviews the service agreements it inherits and consolidates, renegotiates, or replaces overlapping vendors, citing ExxonMobil's purchase of Pioneer. What to do when your customer is the one that gets bought is in what happens to your MSA when your customer gets acquired.
The name after the paperwork is the gap we work on. The Warm Walk-In™ keeps an owner's name in front of the people who make the call-out, in posts he approves. More for owners is on our page for oilfield service company owners, and if you're still working out how to sell to oil and gas companies or how to grow a Permian service company without betting on one customer, those pages pick up from here.
Get Your Bison Walk-Around
Once the paper's signed, the name on it still has to be one they remember.
Send us your LinkedIn. We'll send back the Bison Walk-Around: five minutes of plain English on what's costing you callbacks and what we'd build. No call. No invoice. We give first.
Sources and As-Of Dates
- Foley and Lardner, Your MSA Is Not a Formality (Scott D. Ellis), May 5, 2026. Non-negotiable MSAs, insurance minimums, knock-for-knock indemnity, and the Texas anti-indemnity statute.
- Foley and Lardner, Your Customer Just Got Bought. Your Contract Might Not Survive the Deal (Scott D. Ellis), July 22, 2026. Vendor reviews after an acquisition.
- Apache Corporation, ISNetworld Requirements for Onsite Suppliers, July 2025. The ISNetworld grade and its MSA and insurance checks.
- Top 10 Reasons Field Tickets Are Rejected by Customers (Aimsio), July 17, 2026. Why operators reject field tickets.
- Drilling Tools International Corp Form 10-K for fiscal year 2025, fiscal year ended December 31, 2025. MSA count, sales force, and a long-running supply agreement.
- BP Supply Inc, Business Development Representative (job posting), posted September 29, 2026, viewed October 17, 2026. MSAs and vendor setup in one hire's job.
The Warm Walk-In™ is an original method created by Amanda Leon and owned by The Valours Creative Innovation LLC.