With crude oil prices nose diving in recent months, unsettling fears of idled rigs and plummeting profits have begun creeping through companies and countries whose livelihoods are tied to oil production.

But officials in some of Texas' booming towns aren't breaking a sweat just yet.

“The smart guys will figure that out," jokes Don Tymrak, city manager in Karnes City, from his office in the heart of South Texas’ booming Eagle Ford Shale. “There’s no alarm or red flag going up at the moment. We’re pretty much staying the course.” 

In West Texas’ Permian Basin, Midland officials echo that notion. “For us as a city, it’s not any cause that’s telling us to slow down on our planning,” said Sara Bustilloz, a city spokeswoman.

The Texas Tribune thanks its sponsors. Become one.

Busts famously follow booms, but economists and industry experts say towns atop Texas’ biggest drilling zones probably aren't looking at the beginning of a bust – at least not yet. In the Permian Basin and Eagle Ford, operators have poured billions of dollars into pipelines and other infrastructure, so they're not likely to walk away unless things get much worse. 

“I don’t think those communities – with what we’ve seen thus far – are going to see many impacts,” said Bill Kroger, co-chairman of energy litigation at the Baker Botts law firm in Houston. “They have quite an investment in there, and they’re not going to change that because the price is not the same today as yesterday.”

Spurred by technological advances like hydraulic fracturing, Texas is producing more oil than it has in 30 years, and pumping twice as much as it did just three years ago. It now accounts for more than one-third of all U.S. production, and the Eagle Ford and Permian have driven much of that growth.

The surge, however, comes as international economies have stalled, and demand for oil is dropping. Meanwhile, OPEC – the Organization of the Petroleum Exporting Countries­ – has not cut production, feeding an oil glut that is driving down prices.

West Texas Intermediate oil, the U.S. benchmark, has traded recently in the low-$80-per-barrel range, the lowest price since 2012 and a more than 20 percent drop since last June.

“We’re going to see production come down, and we’re going to see rigs lay down, if we see prices below $80,” said Chris Faulkner, the chief executive of Breitling Energy in Dallas. “That’s a problem. That’s going to be a challenge.”

The Texas Tribune thanks its sponsors. Become one.

Estimating break-even points on a given oilfield – or a section of one – requires its own equation, but several experts said Texas’ biggest fields should stay profitable if prices don't fall much further.

Even at $75 a barrel, most operators might keep their wells pumping, Faulkner said. And $50 or $60 is profitable in parts of the Permian Basin where operators drill vertical wells, which are cheaper than the horizontal wells that have driven much of the Texas boom.

A continued slide may temper the boom and slow exploration in emerging shale fields. But the state should fare better than others, experts say, because major companies in recent years have poured millions of dollars into pipelines, office buildings, housing and other infrastructure – investments they will not likely soon abandon.

“Texas has been shielded so much, because of the Eagle Ford, because of the Permian,” Faulkner said.

In Karnes County, for instance, Polk Operating, based in Bowie, opened a 200-acre oilfield recycling plant. And Dallas-based Southcross Energy Partners spent $7 million to extend a pipeline, according a report by the University of Texas at San Antonio.

The pipelines make moving oil cheaper, giving Texas operators an edge over parts of North Dakota’s Bakken Shale and other fields that need trucks or trains to get their oil out. 

If the market’s volatility does temporarily dampen growth, officials in Karnes City and Midland – both grappling with the boom’s demands on housing, roads and other infrastructure – say they wouldn’t mind some time to reset.

“It gives us the chance to reassess some things instead of just having to react on the spot," said Tymrak, whose town has used its new oil money conservatively. "Because when this thing is going like a charging bull, you’ve got to get out of the way or get run over.” 

The Texas Tribune thanks its sponsors. Become one.

Disclosure: The University of Texas at San Antonio is a corporate sponsor of The Texas Tribune. A complete list of Tribune donors and sponsors can be viewed here.