The paper presents two technical advances applied to downhole DST equipment:

  • Surface Read Out (SRO) with Wireless Transmited Data (WTD) where pressure/temperature measurements are received in real-time, using electro-magnetic transmission through the formation.

  • High temperature DST string and memory gauges.

A test program was carried out with WTD in the Middle-East, where it was important to get pressure data in real-time during the test. Due to the presence of an ESP to flow the well, the selected solution was a real-time pressure/temperature electro-magnetic transmission tool which gave very positive results for:

  1. monitoring the complete operation.

  2. obtaining accurate data in real-time.

  3. optimizing the test program and the duration of the test.

The second part of the paper describes technical advances applied to components of the DST string and to the memory gauges.

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