摘要
本文介绍了一种简单、经济、可靠的涡轮钻转速随钻测量(MWD)系统,所用井下转速信号信息发生器是涡轮整体的一部分,不需要另加任何井下仪器,转速信号利用泥浆信道传递。本文对三缸泥浆泵工作在泥浆通道中所引起的干扰作了分析,提出了用自适应滤波与谱分析法对地面接受到的信号进行处理的方法,给出了在中原油田实验井1000M井深范围进行试验时实录的三组频谱图。利用本文所述的系统制造一种经济、可靠的涡轮钻转速计用于在地面测量3000m以上井深的涡轮钻转速是完全现实的。
The structure of a simple, economical and reliable MWD system for turbodrill rotating speed is introduced. The downhole rotating speed signal generator is a part of the turbine, no other downhole instrument Is needed, The interference of the hydraulic channel caused by the triplex mud pump is analyzed and a method for processing the signal received on the sur- face with adaptive notch filter and spectrum analysis is suggested. Three spectrum plots obtained from the test at a testing well of l,ooo m in Zhongyuan Oil Field in 1989 are shown. It is feasible to make an economical and reliable MWD turbodrill tachometer to measure the downhole turbodrill rotating speed at a depth of more than 3,000 m.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1992年第1期118-124,共7页
Acta Petrolei Sinica
