Efficiency is the goal of most companies. So why would energy companies be any different? For the last couple of years, the industry has been worried about a falling rig count. Lately, however, the rig count hasn't seemed to matter. In nearly every basin in the U.S., oil and natural gas fields have been seeing increasing rates of production per rig.

Halliburton (NYSE:HAL) and Schlumberger (NYSE:SLB) are just two companies have been leading the charge. While they have been helping achieve this increased efficiency, it's the producers like EOG Resources (NYSE:EOG) and Pioneer Natural Resources (NYSE:PXD) that will be the true beneficiaries. These two companies are leading producers in two of the most productive fields in the country. For more, tune in to the short clip below.

It's not too late to invest in the biggest development in the U.S. of the past decade

This segment is from Thursday's edition of "Digging for Value," in which sector analysts Joel South and Taylor Muckerman discuss energy and materials news with host Alison Southwick. The twice-weekly show can be viewed on Tuesdays and Thursdays. It can also be found on Twitter, along with our extended coverage of the energy & materials sectors @TMFEnergy.

Joel South owns shares of Schlumberger. Taylor Muckerman owns shares of Halliburton. The Motley Fool recommends Halliburton. The Motley Fool owns shares of EOG Resources. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.