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近年来，大庆油田在实施“稳油控水”中取得了巨大成就，在采油工艺方面也取得了一系列突破性进展，通过调研我们发现一种新的、在国外已基本研究成功而在大庆还没有的采油工艺技术──井下流体分离与产出水直接回注技术。这项技术可以使“稳油控水”进一步深化，可以降低油田开采成本，提高采收率，从而提高经济效益。本调研报告主要介绍这项技术的基本原理、作用，发明背景、技术现状以及在大庆开展这项研究的必要性、可能性。
In recent years, Daqing Oilfield has made tremendous achievements in the implementation of “steady oil control and water control” and made a series of breakthroughs in oil recovery technology. Through the investigation and study, we found a new basic research success abroad while in Daqing There is no oil production technology ─ ─ underground fluid separation and direct injection of water back to technology. This technology can make “stable oil control water” further deepen, can reduce oil field mining costs, improve oil recovery, thereby enhancing economic efficiency. This research report mainly introduces the basic principle, function, background, technical status and the necessity and feasibility of this research in Daqing.