Formation center tester (FCT) is made up of hydraulic power joint, double PACKER joint, opposing infuse joint, numeric pump exhausting joint, sensor joint and sampling tube joint.
The error introduced by the sampling process caused by making measurements on only a limited portion of a formation.
由于只对地层的有限部分进行测量所导致的采样过程中引入的误差。
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At first, hardware circuit of the system has been designed, including minimum system of DSP, sampling pretreatment, dead zone formation, constant amplitude control and display circuit.