When it comes to investing in the oil and gas industry, there are few things that will give you a better picture of what's going on in the sector than listening to the conference calls of the oil-services giants. Halliburton's (HAL 0.03%) most recent conference call certainly lived up to that reputation as CEO Dave Lesar handed out a few nuggets of information that every oil and gas investor should consider before making any investment decisions for the future. Here are the four most important things that Lesar said on the call that you should know.

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Today's modest gains aren't the recovery we're looking for

One of the things that many investors in the oil and gas industry have noticed as of late has been the uptick in rig counts across the United States. This gradual uptick over the past four or five months has really encouraged investors and industry people to expect to see some gains. However, CEO Dave Lesar was quick to point out that the kind of rigs being hired and the wells being drilled aren't necessarily the kind of activity that's going to improve the income statements of service companies.

The average U.S. rig count increased 14% over the quarter, driven primarily by rig additions to smaller operators where we saw a trend of less service-intensive wells, which is not activity typically worth chasing at today's pricing. 

Lesar isn't alone in saying this. Helmerich & Payne (HP -4.76%) CEO John Lindsay has been saying for a couple of quarters that many of the rigs being added to the active count have been older-specification rigs rented out by private-equity companies trying to drill the cheapest wells possible, and eke out a quick return. These are the kinds of opportunities that both Halliburton and Helmerich & Payne aren't interested in pursuing because they're extremely low margin and aren't worth deploying assets.

Recovery coming in some places, not so much in others

Even though Lesar said that the activity that has returned to North America is pretty low-hanging fruit, he also mentioned how the international recovery will take place a little later, with other places lagging well behind.

We expect to see a bottoming of the international rig count in the first half of 2017. Land-based mature field activity should lead the international recovery, while we expect the Deepwater complex to remain severely challenged for the foreseeable future.

Since Halliburton's business is much more tied to North American activity than most of its peers, don't be surprised if the company is the first of the major oil-services companies to see an earnest uptick in income. 

The dynamics of the oil market have changed

Something that investors need to consider is that shale drilling has created a profound impact on how the oil market works. It's not just the distribution of the top-producing countries, but something even deeper than that, Lesar explains:

Unconventionals, particularly those in North America, are leading the recovery in activity, providing the optimal combination of short-cycle returns and fastest incremental barrel to market. Mature fields continue to be resilient, given their relatively low lifting costs. And finally, deepwater remains structurally challenged with higher costs and long-duration project characteristics. While each faces a different set of circumstances today, you can be sure we are looking at our business closely to ensure that we accelerate our growth in each sector as the industry begins to heal. As we have said for some time, North America has assumed the role of swing producer in global oil production. Because of the shift away from production discipline, which was historically created by OPEC, our industry will likely experience shorter commodity price cycles going forward. So we see the future market as a combination of shorter cycles and range-bound commodity prices. In that environment, it is imperative that returns-focused companies like Halliburton be more asset-light. Having an organization structured in a way that is flexible, nimble and efficient, and that can adapt to these new quick-moving cycles will be critical to drive the returns results our shareholders have come to expect.

This isn't a market of long periods of feast and famine as it used to be. Companies in this industry are going to have to be much more prudent about managing inventories, fleets of equipment, and balance sheets. Chances are that the swings in oil prices will be more frequent, but the range of prices will be much tighter than what we have seen over the past few decades.

The timing of it all

For many investors, it all comes down to timing -- guessing when the market will finally turn for the better. Here's when Lesar thinks we should finally start to see sustained upticks:

As we predicted, the North America unconventional market has responded the quickest, demonstrated by the increase in recent rig count activity. However, we continue to believe meaningful activity increases from our customers will not start until we see sustainable commodity prices above $50 per barrel. And while the international markets will take a little more time to rebound, we are maintaining our integrated global services footprint, managing costs, and continuing to fight for market share. We expect to see the bottom for activity in this market to occur in the first half of 2017. 

That does sound promising, but if this most recent downturn has taught us anything, it's that these predicitons may not necessarily come true. After all, these same people were saying that the recovery would start to take root in the middle of 2015. 

What a Fool Believes

From an investor's standpoint, there was a lot to chew on in Halliburton's most recent conference call. While many people will get caught up looking at the minutiae -- such as when the market will turn, and why the recent uptick isn't necessarily benefiting oil services -- don't overlook the fact that one of the largest oil-services companies in the world is talking about sweeping changes to the dynamics of the oil market taking place. This shift to shorter industry cycles and shale's role as a swing producer is going to have a profound impact on how investors should approach this market in the future.