Schlumberger Summer Internship 2018 Taught Me a Cost Controller's Checklist for Deadline-Driven Oilfield Contracts

When This Checklist Helps

If you're choosing between oilfield service quotes and the drilling schedule is already locked, this checklist is for you. I'm a procurement manager at a 120-person E&P operator. For the past eight years, I've managed a completion services budget of about $4.5M per year, negotiated with 50+ vendors, and tracked every order in our cost system. My Schlumberger summer internship 2018 taught me most of what I know about pricing discipline.

One of the people in my intern cohort was Luke Schlumberger. No relation to the company—or so he said. Luke had coached junior ski racers before engineering school, and one afternoon Eddie—known as The Eddie, because he was the only Ed on the office floor—asked him a question that sounds simple: "What is ski racing?"

"Two timed runs," Luke said. "Fastest total wins. You can be slow on the first run and still win if you stay in the course. But miss a gate and you're done. That's why coaches train racers to be consistent, not heroic."

That stayed with me. The checklist below is the practical version of that idea.

Step 1: Separate the Date From the Price

Before I compare prices, I compare dates. The first question I ask a vendor is: "If I sign today, what is the earliest date your equipment can be on location?" The answer has to be a date, not a range. "We can probably get there Thursday" is not a date. "We can arrive Thursday at 06:00" is a date.

Why does it matter? Because every day of rig time has a cost. In 2024, when comparing quotes for a coiled tubing unit, the cheaper vendor was two days later. The difference was not just two days—it was the frac spread waiting, the permit window, and a partner who was already losing patience. The extra we paid for the vendor who could make the date was $16,000. The standby we would have paid for two days was $42,000. You do the math.

Step 2: Build a Total Cost Table, Not a Price List

Once I have a date, I build the total cost table. I don't compare the day rate alone. A quote can look lower because it excludes mobilization, the fuel surcharge, the "first day at full rate" clause, or the cost to deliver the data. Hidden costs are not always hidden; they're just not on page one.

• Mobilization / demobilization
• Standby rate and the time it starts
• Re-run or repeat charges
• Data delivery format
• HSE and documentation fees

This is the step people skip because it feels like work. It is work. But it's the work that separates a good contract from an expensive lesson. What I mean is: the number on the left side of the spreadsheet should include your time spent chasing the vendor, the risk of late arrival, and the potential for a re-run. That's the real quote.

Step 3: Ask for the Delivery Record, Not the Brochure

Every vendor can say "on time" in a sales meeting. What I want is the last ten jobs with the same service line and the same district. Ask for the dates they mobilized, the time from callout to on location, and the number of service quality events. Some vendors will share this quickly. Some will hesitate. The ones who hesitate are telling you something.

This is the step most people ignore. They ask for references but not for data. Per FTC guidelines, a claim like "we always make our times" has to be substantiated. You are allowed to ask for the substantiation. If it doesn't arrive in writing, treat the claim as noise.

Step 4: Price the Failure Modes

This is the part that makes people uncomfortable. Estimate the cost of a failure. If the wireline unit doesn't show up on time, what happens? Rig standby, lost productivity, a missed weather window, a partner who questions your planning. Add the probability of that happening, then compare it to the extra cost of a more reliable vendor.

In March 2023, we missed a completion window by eleven days because a vendor redirected a crew to another wellsite first. The "cheap" vendor ended up costing us $140,000 more than the premium vendor would have. I didn't need another lesson like that. That's also where the late penalty comes in. If a vendor says "we'll be there," I ask: what happens if you aren't? If the answer is "we'll make it right," I want that defined in the contract. If they say "we don't do late fees," I consider that a signal.

Step 5: Verify the Crew and the Equipment by Name

Verify names. Not "we will send a crew." Which crew? Which supervisor? Which unit? If the quote says Unit 14 and Supervisor Maria, but the mobilization order says Unit 9 and a relief supervisor, your quote has already changed. I've seen this happen more often than not. The only defense is putting the names and equipment ID numbers in the contract.

Also ask for the maintenance log for the unit. This seems like a small thing, but a unit that has been down for repairs three times in the last month is a risk, no matter what the sales rep says. Note to self: ask for the maintenance log even if the vendor looks bored.

Step 6: Run a 24-Hour Response Test

The last step is the one most people think is a formality: run a 24-hour response test. Send an email on Friday at 5 p.m. with a simple but real question about the HSE plan or the data format. The vendor who answers on Saturday morning is the vendor who will answer when your operations people call at 2 a.m. The vendor who answers Monday afternoon is the vendor who will say "let me check" when the crew is already late.

So glad we did this before signing with a new service provider last year. Almost skipped it because we were short on time. Their response came in 38 hours. We didn't sign. It saved us from a bad marriage.

Common Traps

Finally, a few things to avoid:

• Treating "the" as a small word. In contracts, "the" matters. "The well" is not "a well." "The date" is not "a date." Pay attention to the definite article.
• Assuming a bigger company is automatically safer. Sometimes it is. Not always.
• Letting the deadline rush you into a number. The deadline is a reason to plan, not to panic.

My experience is based on land operations in the Permian and Eagle Ford. If you're working deepwater, international, or arctic, your cost drivers will be different. But the principle remains: in a schedule-driven business, delivery certainty is worth paying for.

Honestly, I'm not sure why some vendors keep their promises and others don't. My best guess is it comes down to buffer. The good ones build buffer into their plan. The bad ones don't know they need buffer.

I still think about Luke Schlumberger and The Eddie. What is ski racing? It's two runs against the clock. You can lose the first run by a lot and still win if you stay in your line. In oilfield services, the first run is the quote. The second run is the actual delivery. Don't pick a vendor who is fast in the first run and misses the gate on the second. Prices in this post are from my own records; actual rates change. Verify current pricing before you write a contract.