Abstract: Aiming at the problems of large amount of oilfield waterflooding technology, long measuring and adjusting period, low precision of measuring and measuring, and severe influence of well inclination, the mechanical stratified water injection technology is studied. The technology for the first time adopts hydraulic machinery style control, and integrates intelligent downhole monitoring, automatic tool control and other characteristics, to achieve a real⁃time monitoring, on⁃line measurement functions. The successful application of this technology in Well X6, an oil field in Bohai sea in June 2017 shows that the stratified water injection tool has reliable performance, on⁃line real⁃time measurement and adjustment, and improves the measuring and adjusting efficiency. It can be applied to acidizing operations, interwell tracer and other operations, and provides a new technical idea for stratified water injection development technology in Bohai oilfield.

Key words: Mechanical, Intelligence, Layered water injection, Hydraulic, multi?stage flow control device

摘要： 　针对目前海上油田注水技术存在调配工作量大，测调周期长，测调精度低，受井斜影响严重等问题，开展了机械式分层注水工艺技术研究。该工艺技术首次采用液压机械式控制方式，并集成了智能化井下监测、自动化工具调控等特点，实现了实时监测、在线测调的功能。此项工艺技术2017年6月在渤海某油田X井的成功应用，表明分层注水工具性能可靠，在线实时测调，提高了测调效率，可适用酸化、井间示踪剂等作业，为渤海油田分层注水开发技术提供了新的思路。

关键词: 机械式, 智能, 分层注水, 液压, 多级流量控制装置