Where it all began

摘要

The world of oil and gas was quite a different place a quarter century ago. Production mostly came straight up out of vertical holes. Though the Texans had drilled the first horizontal well in 1929, in Canada horizontal drilling was still mostly an esoteric, unproved and untested technology.In 1987, all that began to change-so much so that, during the last 25 years, it simultaneously emerged as a standard production technique-and revolutionized production. One result is that many petroleum resources have become technology-driven plays. Another is that reserves are way, way up.