Sigmacubed: During oil cutbacks, energy tech companies see chance to grow

Oil prices are down more than 50 percent since the summer and many energy companies are slashing jobs and their budgets. But some energy technology services companies are eyeing the industry's woes as a way to grow. They contend their services and products can help exploration and production companies save money in the oil patch through greater efficiencies. One of those companies is Houston-based Sigma Cubed Inc. - or SIGMA3 - which was founded four years ago and has quickly grown to nearly…