徐兴安　张凤辉　杨万有

摘      要： 為提高渤海油田注水增产效率，实现注水井分层注水的精细化管理，针对渤海油田大排量注水的应用需求，设计开发了一种井下分层注水智能配水器及配套地面监控设备。该配水器具有井下数据实时采集、分层注水量自动调控、分层在线验封、注水安全监测等功能，配水器由机械部分和电控电路两部分组成，其中电控电路包括井下电源模块、微控制器模块、数据采集模块、解码电路、发码电路、电机驱动电路。配水器借助钢管电缆与地面监控设备相连，即可在中控远程实现分层注水的在线监测与分层注水量的动态调控，单层配注量最大可达1 000 m³·d^-1，单井测调时间可缩短至几个小时，减少了后期调配作业和修井费用，截至2019年12月现场已成功应用87口井，累计298套，节约测调费用约1 370万元，降本增效显著。

关  键  词：海上油田;注水;智能配水器;测试仪器;分层注水

中图分类号：TE357.8       文献标识码： A       文章编号： 1671-0460（2020）07-1396-04

Research on Intelligent Monitoring and Control

Technology of Water Injection Well in Offshore Oilfields

XU Xing-an， ZHANG Feng-hui， YANG Wan-you

（Energy Technology & Services-oilfield Technology Services Co.， CNOOC， Tianjin 300452， China）

Abstract：  In order to improve the efficiency of water injection in Bohai oilfield and realize the fine management of layered water injection in water injection wells， a kind of underground layered water injection intelligent water distribution device with cable and supporting ground monitoring equipments was designed and developed according to the application demand of large displacement water injection in Bohai oilfield. The water distribution device has the functions of real-time data collection， automatic control of layered water injection， layered online sealing test， water injection safety monitoring， etc. The water distributor is composed of mechanical part and electric control circuit. The electric control circuit includes underground power module， micro controller module， data acquisition module， decoding circuit， code sending circuit and motor driving circuit. The water distributor can be connected to the ground monitoring equipment with the help of steel pipe and cable， which can realize the online monitoring of layered water injection and the dynamic regulation of layered water injection in the central control remotely. The single-layer water injection can be up to 1 000 m3·d-1 at most， and the single well test and adjustment time can be shortened to a few hours， which can reduce the cost of later deployment and workover. As of December 2019， 87 wells have been successfully applied on site， with a total of 298 sets. The saved adjustment cost is about 13.7 million Yuan， cost reduction and efficiency increase are significant.

Key words：  Offshore oil field; water injection; intelligent water distributor; Testing instrument; Layered water injection

渤海油田注水开发占比达78%，现有注水井811口，其中分层注水井742口，分注井占比超过90%。渤海油田常规的分注技术主要有同心分层注水技术、空心集成分层注水技术、边测边调分层注水技术等^[1-7]，分层测调、层间验封均需要借助钢丝或电缆作业配合，受平台作业窗口、井斜、单井测调周期长等多方面因素的影响，普遍存在注水井分层测调不及时、大斜度井无法测调、测调效率低等问题，造成渤海油田注水井三率较低，严重地影响了油田注水开发的效果。……