Shutterstock Technology more than a decade in the making is putting into play the ultra-high-pressure Lower Tertiary trend in the US Gulf of Mexico, which holds some of the region’s largest undeveloped oil and gas resources.Leading Gulf producers Chevron, BP and Shell are bringing different approaches and levels of experience to the “20k” development challenge, but are all keen to proceed to extend plateau production.Renewed economic viability is even allowing old development plans to get a fresh look as years of limited rank exploration have reduced the pool of significant outstanding development opportunities in the province. Save for later Print Download Share LinkedIn Twitter The Issue