In a deal that made few ripples outside the energy industry, two very large but relatively obscure companies, Rockwell Automation and Schlumberger Limited, announced a joint venture called Sensia. The new company will “sell equipment and services to advance digital technology and automation in the oilfield,” according to the Houston Chronicle. Yet the partnership has ramifications far beyond Houston’s energy corridor: It’s part of a growing trend that sees major tech companies teaming with oil giants to use automation, AI, and big data services to enhance oil exploration, extraction, and production.