井下无线智能调产技术研究及应用  

Study and Application of Downhole Wireless Intelligent Production Adjustment Technology

作　　者：林丽君 何明格[3] 王清远 马梓瀚[3] Lin Lijun;He Mingge;Wang Qingyuan;Ma Zihan(School of Mechanical Engineering,Chengdu University;College of Architecture&Environment,Sichuan University;PetroChina Southwest Oil and Gas Field Company)

机构地区：[1]成都大学机械工程学院 [2]四川大学建筑与环境学院 [3]中国石油西南油气田公司

出　　处：《石油机械》2021年第8期75-81,共7页China Petroleum Machinery

基　　金：国家科技重大专项“四川盆地大型碳酸盐岩气田开发示范工程”(2016ZX05052)。

摘　　要：针对传统井下节流调产方式(绳索作业更换井下节流嘴)作业周期长、成本较高和风险较大等不足,综合应用机械工程、微计算机、自动化控制和无线通信等技术手段,以实现远程无线控制井下调产的智能化天然气生产控制技术为目的,攻关基于CAD/CAE的无线控制井下节流器机械系统结构设计、基于气体压力波编解码方法和井口压力波编码工艺设计以及无线控制井下节流器控制算法设计等关键技术。以远程无线控制井下智能节流方法及控制原理为基础,配套研制了无线控制井下节流器,并开展了现场应用。应用结果表明,无线控制井下节流器整体性能稳定,气压波无线控制技术可靠,具有操作简便、成本和风险低的特点。该工艺技术可为实现智慧油气田井筒自动化控制提供新的解决方案,提出的方法和思路对其他井下智能工具的研发亦具有一定的参考意义。In view of the shortcomings of traditional downhole throttling production adjustment mode(replacing downhole flow nipple by wireline operation)such as long operation cycle,high cost and high risk,with the realization of intelligent natural gas production control by remote wireless control downhole production adjustment as the objective,the mechanical engineering,microcomputer,automatic control and wireless communication technologies were comprehensively applied to study the key technologies such as the design of mechanical system structure of CAD/CAE based wireless control downhole choke,the design of gas pressure wave based coding and decoding method and wellhead pressure wave based coding technology,and the design of control algorithm of wireless control downhole choke.In addition,based on the remote wireless control downhole intelligent throttling method and the control principle,a wireless control downhole choke was developed and applied in the field.The application results show that the overall performance of the wireless control downhole choke is stable,and the pressure wave wireless control technology is reliable.It has been successfully applied in the downhole wireless intelligent production adjustment in gas wells,and has the characteristics of simple operation,low cost and low risk.This technology provides a new solution for the automatic control of wellbore in smart oil and gas fields,and the proposed methods and ideas also have certain reference significance for the development of other downhole intelligent tools.

关 键 词：井下无线控制 气压波通信 无线控制井下节流器 井下智能调产 智慧油气田 

分 类 号：TE938[石油与天然气工程—石油机械设备]