Brazil’s National Operator, Petrobras has been experimenting with advanced Water-Alternating-Gas injection in a number of offshore plays and recently at the Rio O&G 2014, Petrobras’ Pre-salt manager confirmed that the super-major will be using the technology at most, if not all of its pre-salt plays. The WAG injection process aims to recover more oil from a reservoir and also to recover oil more efficiently. The technology was originally intended to improve sweep efficiency during gas flooding, with intermittent slugs of water and gas designed by and large to follow the same route through the reservoir. Variants include injecting gas as a supplement to water or vice versa, primarily to reach other parts of the reservoir.
MiniROVs – Deep Trekker
As work class ROVs used in the O&G industry and S&R missions reach new peaks in demand, small inspection class ROVs, better known as mini or micro ROVS are also becoming accessible to the general public. These light weight ROVs come in various shapes and sizes, although most models are limited to shallow water depths, there are exceptions and the probability is high that in the near future these MiniROVs will be capable of reaching deeper waters. Based in southern Ontario, Canada, Deep Trekker Inc. is specialized in the design and manufacture affordable subsea exploration tools, targeting the growing world consumer market for U/W exploration tools.