In September 2025, following one year of continuous research and development, ArenaPetro, Ltd. further upgraded the performance specifications of the MCM300 single-conductor telemetry system.
This upgrade improved the downlink transmission scheme by replacing the traditional baseband scheme with a modulation scheme, significantly enhancing the stability and reliability of control command transmission in strong interference environments. The upgrade also further optimized the downhole circuit dimensions, reducing the circuit width to 24 mm to suit instruments with a 38 mm diameter. At present, the product has been applied by customers in multiple specifications including 38, 43, 54, 60, 73 and 90 mm. Among these, MCM300 logging tools with outer diameters of 38–60 mm share the 24 mm circuit board version, while those of 73–90 mm uses the 47 mm version, reducing both maintenance and production costs.
Typical Technical Specifications of the MCM300
l Full-duplex data transmission with an uplink rate of 300 kbps and a downlink rate of 10 kbps over a 7,000‑meter single-conductor cable
l Bit error rate (BER) not exceeding 3.0×10⁻⁸ under the above test conditions
l Fully automatic cable adaptation function, automatically matching single-conductor logging cables of different lengths and specifications
l Downhole tool bus supporting multiple rate options including CAN/CAN-FD, RS485 or Ethernet
l Integrated measurement of various auxiliary parameters such as tool temperature, cable head voltage and CCL signals
l Maximum operating temperature of 175 °C; the modem section can reach 230 °C with a thermal flask, while the power section can directly withstand 230 °C high temperature and operate stably long-term
As a preferred telemetry system for cased-hole combination logging and imaging logging, the MCM300 series features a high performance-cost ratio, comprehensive functions, reliable transmission, strong compatibility and high adaptability. It can be matched with various downhole tools and surface systems, and customized according to customer requirements, offering broad application prospects.
ArenaPetro officially began batch delivery of this product to a customer in the fourth quarter of 2025.
