Research on sampling strategy of the four-channel downhole test gauge

被引:0
作者
Li, XY [1 ]
Zu, J [1 ]
机构
[1] N Univ China, Key Lab Instrumentat Sci & Dynam Measurement, Minist Educ, Taiyuan 030051, Shanxi, Peoples R China
来源
ISTM/2005: 6th International Symposium on Test and Measurement, Vols 1-9, Conference Proceedings | 2005年
关键词
perforation; downhole pressure measurement; sampling strategy;
D O I
暂无
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The paper introduces a new four-channel downhole test gauge. It can measure and record the variational curve of the pressure, the temperature, the acceleration and the voltage of the battery of the gauge. Combining its operation principle, the paper pays attention to study the sampling strategy of the multi-passage testing system in the special environment. In the course of research, we guaranteed not to change the basic design conception - "three-environment, frequency conversion, and specifications" etc, finally we adopted the programmable-segmentation self-adaptive sampling strategy, which dividing into several even segments. But in the concrete design, especially in electing and cooperating of the analog switch and ADC, we have carried on a lot of emulation work and experimentations. At last, the implementing scheme is confirmed, which can meet the designing requirement greatly.
引用
收藏
页码:617 / 620
页数:4
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