"National Oilwell Varco (NYSE: NOV), a buy in our 'Wildcatters portfolio,' will see an outsized benefit from improving conditions in the global oil market," says Elliott Gue in The Energy Strategist.

"Rig technology is the crown jewel of National Oilwell's business; the unit builds key equipment used on land and offshore drilling rigs.

"The unit is currently benefiting from the boom in deepwater drilling activity -- one of the only drilling markets that continue to see growth.

"Equipment used on deepwater drilling rigs is far more complex and expensive than that used on land or shallow-water rigs. As a result, selling equipment into the deepwater market carries far higher profit margins for National.

"Over the next five years the energy patch should offer some of the best investments around, and one standout is Schlumberger (NYSE: SLB)," says Stephen Leeb in The Complete Investor.

"Schlumberger, by a wide margin, is the best and most dominant. Its services range from well testing to pressure pumping to seismic testing, and it's No. 1 in virtually every area it occupies.

"Some of its operations, especially those that maintain the health of existing wells, are highly recession-resistant.

"What's going on with Transocean (NYSE RIG), the owner of the world's biggest fleet of offshore drilling rigs?" asks Richard Moroney, a specialist in blue chip stocks.

In his Dow Theory Forecasts, he explains, "The shares plunged 67% - nearly $100 a share - in 2008, and we can't blame the usual suspects." Here, he explains why he continues to rate thes stock a "Focus List Buy" in his blue chip-focused advisory service.

"Poor operating performance? Wall Street expects 2008 per-share profits of $14.34, up 68%. Shaky future? Transocean is expected to grow per-share earnings 4% in 2009 and 10% annually over the next five years.

"Fundamentals eroding? Not at all. The balance sheet is sturdy and the backlog stout at $41 billion, or three times expected 2009 revenue. Rather, we see two chief contributors to Transocean's steep slide, and neither should jeopardize long-term prospects.

"When it comes to oil services, the world's most dominant company by far is Schlumberger (NYSE: SLB)," says Stephen Leeb, editor of The Complete Investor. Here, he looks at this "extraordinary" company.

"The question isn't whether inflation will worsen-it's how to protect yourself. Major and obvious lifelines we've stressed include precious metal and commodity companies, especially ones able to boost production.

"For additional inflation insurance, look to what Warren Buffett likes to call 'great companies.' These have two crucial characteristics that allow them to take inflation in stride.

"First, a great company is so dominant in its market that it can pass rising costs along to its customers. And second, it's in a market growing faster than the world's economy.

"First recommended in September 2004, Helix Energy Solutions (NYSE: HLX) is the oldest holding on our Buy List - and the biggest winner, gaining 133%," notes Richard Moroney.

Here, the editor of Upside explain, "Considering its bright profit-growth prospects, reasonable valuation, and impressive Quadrix scores, Helix remains among our very best ideas and a top pick in the oil patch."

"Helix serves energy producers worldwide, providing such contract services (36% of total revenue for the nine months ended September) as deepwater pipe-laying, well operations, robotics, and reservoir services.

"The shelf-contracting business (34%) consists of 59%-owned Cal Dive International (NYSE: DVR), a provider of dive-related and shallow-water construction services.

"The fast-growing oil and natural gas production business (30%) focuses on marginal, mature, and smaller fields - properties no longer significant or viable for large energy companies. Fueled partly by high energy prices, petroleum companies are increasingly targeting mature and small reservoirs.

Technician Michael Ashbaugh expects a "cooling off period" before stocks again test their all-time highs. Yet, he remains bullish, with a particular focus on the oil services sector. In his MarketWatch Technical Indicator he explains, "The Dow was recently trading 206 points from all-time highs while the S&P 500 was 26 points from all-time highs."

He suggests, "Looking ahead, that's where the tension rests. The U.S. markets are facing significant resistance at record highs, and are extended near-term after a massive two-day spike. That means a cooling off period is likely due before they make a legitimate run at record territory."

Regardless of any short-term pullback, he adds, "The market's recent decisive break atop the 50-day moving average is distinctly bullish. The U.S. markets also confirmed their uptrend with a 24-to-1 positive volume session last Tuesday, meaning the longer-term path of least resistance is higher."

Meanwhile, one of his favored sectors, based on their technical positions, is the oil services stocks. He explains, "The Oil Services Index remains among the strongest sectors. We have selected several names to highlight as they are well positioned technically. And, their relative strength makes them better bets longer-term."

The advisor points to Weatherford International (NYSE: WFT); Cameron International (NYSE: CAM); Schlumberger (NYSE: SLB); National Oilwell Varco (NYSE: NOV); and FMC Technologies (NYSE: FTI).

Each day, Steven Halpern's TheStockAdvisors.com features the latest stock picks and investment ideas from the nation's leading financial newsletter advisors.

"The global supply picture is extremely bullish for crude oil," says energy expert Elliott Gue, who is playing this trend through oil services, equipment, and exploration firms including Schlumberger (NYSE: SLB), which he calls the "world's premier oil services play."

The editor of The Energy Strategist explains, "OPEC's current oil output isn't high enough to allow global oil importers to build their crude stocks ahead of the summer driving season. The fundamentals of strong growth in demand, coupled with static to falling supplies, are supporting higher global oil prices."

Further, he notes that unrest and weak output from Nigeria, terrorist attacks in Algeria and tension in the Middle East, and there are additional of reasons to be concerned that supplies could be cut even further from "current anemic levels."

All told, he sees, this as "a recipe for a significant rally in crude." In addition, he notes that global activity remains brisk, He notes, "We've seen no letup in the red-hot pace of international drilling and exploration activity; I expect no such slowdown to develop. In fact, if anything, the current environment should accelerate global oilfield activity."

Oil services -- he explains -- is a "catch-all term" used to describe a wide variety of oil production and exploration-related functions. He notes, "Suffice it to say that producers -- firms such as ExxonMobil (NYSE: XOM) and Chevron (NYSE: CVX) -- need oil and gas services firms to find and produce hydrocarbons.