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As of January 16, the first prototype of 150 degrees Celsius electric pump downhole sensors in the country has been applied on-site for more than two months at the 3-D 4-P38 well in North Daqiu Oil Field, with good results. This is the first domestic independent research and development products to fill the temperature level of 150 degrees Celsius underground sensor technology gap, the cost of imported products lower than half.
Technical personnel after a month of monitoring that this product can accurately measure the submersible pump inlet pressure, outlet pressure, well fluid temperature, motor temperature, vibration and other seven parameters. "With these parameters, we can know the parameters of oil well production in time, analyze the status of oil well production, help users to optimize the ESP program and improve the oil recovery efficiency." Han Ji-qiang, Deputy Director of Electrical Design, Liqin Pump R & D Center, Daqing Oilfield .
Han Jijiang introduction, began to develop this product in 2014, when the domestic electric pump downhole sensors are mostly resistant to 125 degrees Celsius, and breakthrough "125 degrees Celsius" is particularly difficult, but also particularly critical. Technical staff through in-depth power system, data acquisition and signal conditioning unit, timing control and data transmission mechanism in-depth study, the formation of 150 degrees Celsius temperature multi-channel time-sharing transmission technology, with self-stability underground power supply technology instrument two key technology. In November last year, the research team broke through the technical bottleneck of the domestic sensor with the maximum temperature of 125 degrees Celsius, solving the technical problems of the traditional design scheme of timing control circuit being expensive, the high static power consumption of the underground power supply, and the export restriction of the related high and small devices abroad.
Daqing Oilfield 150 degrees Celsius pump downhole sensor mainly for overseas markets. In recent 4 years, Daqing Oilfield Lisen Pump overseas market an average of 160 sets of this product every year, a set of equipment than the use of foreign products to save 50,000 yuan, a year to save 8 million yuan. Next, Daqing Oilfield will carry out scale promotion of downhole sensors at 150 degrees Celsius, gradually replacing the original foreign products.
In recent years, Daqing Lizhen pump industry to develop electric pump downhole sensor technology and products, has now achieved serialization, categories were two parameters, four parameters, seven parameters, the temperature level is divided into two levels of 125 degrees Celsius and 150 degrees Celsius, pressure Levels are divided into 25 MPa and 40 MPa two levels.
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