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NET-ORIENTED DIGITALIZED FOUR ARM INDEPENDENT CALIPER, NDFC

It uses a hydraulic activated device to close and open the caliper arm. The 4 orthogonal independent borehole radii can be measured. After digitalization, the signals communicate with telemetry / GR tool by Ethernet through 10M communication interface board. There are 15 through wires, and 31-pin connectors at up and down heads as per 580 standards
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NET-ORIENTED TOOL FOR TEMPERATURE TENSION MUD RESISTIVITY, NTTR-IC

The sonde is composed of the tension sensor, temperature sensor and resistivity sensor, which can measure the toolstring tension/compression, drilling fluid temperature and resistivity respectively It communicates with telemetry/GR tools by Ethernet, which can receive the command and send digitalized signal to telemetry/GR tool.
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NET-ORIENTED DUAL LATEROLOG TOOL, NDLT

It has independent IP address; the data can be exchanged with NTGR by means of Ethernet. It provides both deep and shallow laterolog resistivity measurements. It is used to measure the resistivity of flushed zone and original formation to study the resistivity variation of formation.
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NET-ORIENTED DIGITALIZED SONIC TOOL, NDST

Its circuits communicate with telemetry/GR tool by Ethernet, receive the command from NTGR tool, digitalize the received waves, and up transmit them to the NTGR tool. Sonic array adopts one transmitter and five receivers.
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