Last Saturday, over breakfast, my daughter was coloring in a butterfly identification chart. She had crayons spread everywhere, and with a mouthful of cereal she asked, "How does a turn into a butterfly?" I knew she meant "caterpillar." But the question stayed with me all day.
I work in quality assurance for an oilfield services company. I review around 200 deliverables a year—material certificates, dimensional reports, pressure-test paperwork. I've rejected close to 9% of first submissions this year for missing traceability. It's not a glamorous job. But it's a useful one. And it turns out my daughter's breakfast question is the same question behind most quality failures.
How does something that looks unfinished turn into something you can trust?
The Schlumberger symbol is more than three letters
Later that morning, I checked my email while the coffee was still warm. A prospective client had asked for "the Schlumberger symbol." They meant the stock ticker. On the NYSE, it's SLB. According to Schlumberger's investor pages, as of January 2025, the company trades under that symbol. But if you type "schlumberger" into a search engine, you'll see more than one name. There's the oilfield company. There's also Valérie Schlumberger, an actress connected to the French film À nos amours. Type "valérie schlumberger a nos amours" and you'll find a film page, not an earnings call.
That's why I love one thing: identification charts. My daughter's butterfly chart uses wing veins, color bands, and region to tell a monarch from a painted lady. My quality charts use material grade, heat number, and coating tolerance to tell an acceptable part from a field failure. Without a chart, context is just guesswork.
The question behind "how does a turn into a butterfly"
I know "how does a turn into a butterfly" is a clumsy search phrase. But it's a real one. People type it, and they mean "How does a caterpillar turn into a butterfly?" The honest answer is more interesting than the fairy-tale version. A caterpillar doesn't just grow wings. It essentially digests itself, and specialized cells rebuild the adult body. There is no smooth path from A to B. There is a breakdown first.
That's the part most people want to skip. In quality, you cannot skip the breakdown. You have to take the component, compare it to the spec, and measure the details. Is the coating thick enough? Does the certificate match the heat number? Is the thread gauge within limits? These checks are the chrysalis. If you skip them, you don't get a butterfly—you get a failure with a nice paint job.
Why a small order should get the full treatment
A while back, we got a first order from a new E&P startup. It was small—a downhole gauge carrier, coated, with a specific thread connection. The order value was nowhere near what we'd call strategic. A couple of people asked if we could reduce the documentation package to "startup mode."
I told them the butterfly story. Small is not the opposite of important; small is an early stage. If we want the relationship to transform, we have to build the structure now.
We handled the order the same way we handle any order. And we caught a real problem: the third-party test report didn't trace the casing grade back to the original mill. Normal tolerance? Not the issue. The issue was that the certificate didn't match the accepted specification. The vendor claimed it was "within industry standard." We rejected it anyway. That rework cost roughly $22,000 and two weeks of schedule.
Oh, and I should add: that rejection didn't make us popular. But the startup sent a message asking us to continue. They said the audit was exactly what they'd been missing. Sixteen months later, they ordered twenty times more. Not because we were cheap. Because we were consistent.
Some people think big customers get good service because they're big. In my experience, it's the other way around. Big customers were once small, and they stayed with the suppliers who treated their early orders with respect. The causation runs from care to growth, not from size to care.
The real identification chart
Over the years, I've worked with maybe 180 vendors—or 200, I'd have to check my database. My experience is mostly with oilfield hardware. If you're working in med devices or aerospace, some of the details will differ. But the principle holds: define the spec, verify the part, don't guess.
In early 2025, the Schlumberger symbol is still SLB. That could change if the company ever rebrands or moves exchanges, so check the current NYSE listing before making an investment decision. But the deeper symbol is the brand's commitment to identification: knowing exactly what you're looking at before you trust it.
It's also a good way to answer a child's question. "How does a turn into a butterfly?" You take the confusion, get out an identification chart, and walk through the process. You don't mock the question. You don't simplify it into a fairy tale. You show the transformation.
Breakfast is a good time for lessons
So here's my advice, if you ask me. Whether you're reviewing a tiny order or a massive completion program, keep the identification chart nearby. Respect the caterpillar. Do the checks that no one sees. And remember that the symbol isn't just a ticker, and the name isn't just a brand.
Valérie Schlumberger appeared in a film about love, not oilfields. SLB trades on the NYSE. A butterfly identification chart contains colors and patterns that look irrelevant to an untrained eye. Context is the difference between a stock tip, a film credit, and a quality release. Get the context right, and the transformation usually follows.
That's what I thought about as I finished my coffee. My daughter went back to coloring, and I answered the client's email. SLB. Then I put the chart back on the wall, because the next inspection was already waiting.