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The end of easy oil is a secular trend that will provide a long-term tailwind for the services industry. However, investors also need to be attuned to short-term downdrafts and updrafts in this cyclical industry as a means of identifying which names are best-positioned to thrive in the current environment.

Frenzied drilling in shale oil and gas fields has driven the North American market in recent years. Investors can gauge overall drilling activity by monitoring the horizontal rig count, an index that tracks the number of directional rigs actively drilling for oil and gas in the U.S. Operators in shale fields favor horizontal wells, which expose more of the productive layer, so this rig count serves as a decent proxy for activity in the shale.


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Source: Bloomberg

As recently as 2004, units capable of drilling horizontal wells accounted for less than 10 percent of the total U.S. rig count. Today, horizontal rigs account for almost two-thirds of a U.S. rig count that has surged to 1,850 units from about 1,200 units at the end of 2004.

At first blush, the dramatic increase in the horizontal rig count would appear to be a positive for the oil-field services industry. Indeed, operators with outsized exposure to the North American market thrived from 2009 to mid-2011, fueled by robust drilling activity in the shale plays and capacity shortages. The inflection point came in late 2011 and early 2012, when depressed natural gas prices prompted producers to scale back development in gas-focused plays and overzealous capacity additions swung the market into an oversupply.


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Source: Bloomberg

Although the North American rig count has pulled back slightly from its recent high, the gas-directed rig count has plummeted and the oil-directed rig count has surged to new highs.

Crude oil and liquids-rich gas deposits usually occur at shallower depths and lower geologic pressures than in gas-focused basins; significantly more horsepower is required to overcome the natural field pressure in the deep-lying, gassy plays. Check out this data from Canyon Services (OTC:CYSVF), a Canada-based provider of hydraulic fracturing.


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Source: Bloomberg, Canyon Services

Although the majority of the unconventional fields referenced in this table are located in Canada, the same geological principles and methodological developments adhere north of the border.

In both the U.S. and Canada, hydraulic fracturing usually occurs in multiple stages along the horizontal well. Producers have tended to increase the number of fracturing sites in recent years, a practice that leads to superior production rates. Canyon Services has found that horizontal oil wells oftentimes involve more fracturing stages than horizontal gas wells.

Another commonality: Oil-producing shale fields require less horsepower for hydraulic fracturing than their gassy counterparts. For example, horizontal wells in the oil-bearing Bakken Shale require between 2,000 and 4,000 in horsepower for hydraulic fracturing, compared to between 40,000 and 50,000 in horsepower for a well in British Columbia's gas-rich Horn River Basin. The volume of fracturing fluid pumped into each fracturing stage is also much higher in fields that primarily produce natural gas.

When drilling activity in shale oil and gas plays accelerated in 2009-11, capacity shortages enabled services firms to push through significant price increases. But the great migration from gassy fields to oil-laden plays has transformed this virtuous cycle into a vicious one; industry estimates that the pressure-pumping market faces a supply overhang of as much as 20 percent.

Prevailing prices for hydraulic fracturing in gas-focused basins have tumbled by one-third or more from their peak. Meanwhile, the influx of pressure-pumping horsepower to liquids-rich plays has also weighed on pricing in these regions. Profit margins on pressure-pumping continue to fall and have reduced the profitability of services outfits' North American operating segments.

Names with significant exposure to North America and deteriorating pressure-pumping margins include Halliburton (HAL) and Baker Hughes (BHI), as well as purer plays on this space such as Canyon Resources, CalFrac Well Services (OTCPK:CFWFF), C&J Energy Services (CJES) and Trican Well Service (OTCPK:TOLWF).

These stocks have pulled back considerably this year, prompting some investors to regard the group as a value play. Don't fall into this trap. In conference calls to discuss second-quarter results, the management teams at most services outfits indicated that the pricing outlook for pressure-pumping would continue to deteriorate. We will monitor these firms' third-quarter earnings for signs that profit margins are at least stabilizing.

Avoid North America-focused services names that have outsized exposure to pressure-pumping. A buying opportunity will emerge eventually, but valuations and industry fundamentals have yet to reach that point.

Source: Under Pressure: Profit Margins On North American Hydraulic Fracturing