ナノ粒子含有薬液の増油効果の検証および米国内の非在来型油田での油生産の向上

抄録

The production of shale oil and gas from unconventional wells are typically declined within a short term. Each operator is trying to maintain production levels or prevent production levels from declining. Recently, applied nanotechnology is focused to increase the productivity of oil and gas and extensive research and development efforts are now common. Formulated fluids（nanoActiv^(r) Hydrocarbon Recovery Technology（HRT）, Nissan Chemical America Corporation, the United States）which are developed based on nanotechnologies are dispersion of unique surface modified nanosilica particles to enhance the stability in harsh reservoir conditions. Formulated fluids with nanoparticles contribute to increase the productivity of oil and gas for a long term due to penetration of highly stabilized nanosilica particles into the natural fractures and in the deep reservoir and peel off the oil droplet from the rock surface mechanically. In addition, Formulated fluids with nanoparticles works to modify wettability and reduce Interfacial Tension（IFT）, allowing more oil and gas to be mobilized in a re-pressurized environment created by using large volumes of injected fluid. Nano-sized particles penetrate further and more thoroughly permeate the natural fracture network than traditional remediation or stimulation technologies and resulting in longer and more complete production efficacy. We have obtained good results in oil and gas productivity from the majority of case studies in Permian basin.