CCSK技术在生产测井系统中的应用  

Application of CCSK Technology in Production Logging System

作　　者：黄松涛 王德平[2] 耿春娜 张会珍[3] HUANG Songtao;WANG Deping;GENG Chunna;ZHANG Huizhen(The 22nd Research Institute of China Electronic Technology Group Corporation,Xinxiang,Henan 453000,China;Daqing Logging and Testing Services Company,Daqing,Heilongjiang 163412,China;School of Electrical Engineering&Information,Northeast Petroleum University,Daqing,Heilongjiang 163318,China)

机构地区：[1]中国电子科技集团公司第二十二研究所,河南新乡453000 [2]大庆油田有限责任公司测试技术服务分公司,黑龙江大庆163412 [3]东北石油大学电气信息工程学院,黑龙江大庆163318

出　　处：《测井技术》2020年第1期16-20,共5页Well Logging Technology

摘　　要：目前,中国主流的生产测井系统多为WTC系列、3508系列或者Sondex系列,采用曼彻斯特码或AMI码等基带编码方式进行数据传输。由于受到仪器外径及长度限制,使目前广泛应用于裸眼井测井的OFDM传输技术受限。为此,通过引入CCSK(循环移位编码)技术,并根据电缆特性自动调整井下仪器的编码方式,解决基带编码传输系统传输速率低、系统误码率高以及现场配接困难等技术问题,从而达到自适应配接的目的。CCSK技术编码简单、井下复杂度低、易于高温小型化实现,适用于高温(175℃)、高压(100 MPa)、小直径(Φ38 mm以下)生产测井传输系统。Most popular production logging systems in China are WTC,3508 or Sondex series,and they use baseband coding such as Manchester or AMI to transmit data.Limited by tool diameter and length,the OFDM transmission technology widely used in open hole logging is influenced.However,by introducing the CCSK(cyclic shift coding)technology and automatically adjusting the coding mode of downhole tools according to the characteristics of cable,some technical problems such as low transmission rate,high bit error rate and difficulty in field connection of the baseband coding transmission system can be solved,and the purpose of adaptive connection can be achieved.CCSK has the advantages of simple coding,low downhole complexity and miniaturization at high temperature.It is suitable for the production logging transmission system required for high temperature(175℃),high pressure(100 MPa)and small diameter(less than 38 mm).

关 键 词：生产测井 CCSK 自适应配接 高温高压 小直径 

分 类 号：P631.83[天文地球—地质矿产勘探]