基于双向可控供电的随钻环空压力测量系统  

Development of Pressure Measurement-while-drilling System Based on Bidirectional Controllable Power Supply

作　　者：吕海川 艾维平 盛利民 邓乐 

机构地区：[1]中国石油集团钻井工程技术研究院

出　　处：《石油机械》2018年第1期7-10,共4页China Petroleum Machinery

基　　金：国家科技重大专项之子课题"窄密度窗口安全钻完井技术及装备"(2011ZX05021-003)

摘　　要：随钻环空压力测量系统能够提供实时的井底压力数据,提高井底压力控制精度,防止井下复杂情况的发生,提高钻井时效。鉴于此,介绍了随钻环空压力测量系统的基本原理、系统硬件组成、压力传感器选型及标定结果,阐述了采用双向可控供电方式的信号测量与数据采集电路。现场试验情况表明:随钻环空压力测量系统的测量精度较高,钻进过程中测量数据实时传输可靠稳定。该系统可为控压钻井、欠平衡井、高温高压井和大位移井等钻井作业提供技术支持。The PWD （ pressure measurement- while- drilling） system can provide real-time bottom hole pres-sure data, improve the accuracy of bottom hole pressure control, prevent the occurrence of downhole complex con-ditions and improve the drilling time- effectiveness. The basic principle, system hardware components, pressure sensor selection and calibration results of the PWD system are introduced. The signal measurement and data acqui-sition circuit with bi-directional controllable power supply is described. The field test results show that the measure-ment accuracy of PWD system is high. The real-time transmission of measured data during drilling is reliable and stable. The developed PWD system can provided strong technical support for drilling operations such as MPD, un-derbalanced drilling, high temperature high pressure well drilling and extended reach well drilling.

关 键 词：环空压力 随钻测量 双向可控 供电 欠平衡钻丼 

分 类 号：TE927[石油与天然气工程—石油机械设备]