Heat-resistant gas injection multi-parameter logger

Abstract

The invention relates to a heat-resistant gas injection multi-parameter logger, comprising a logging framework, a flow measurement short section, a temperature measurement short section and a pressure measurement short section, wherein the flow measurement short section, the temperature measurement short section and the pressure measurement short section are arranged on the logging framework from top to bottom. The heat-resistant gas injection multi-parameter logger further comprises a thermal-insulating cylinder body arranged outside the logging framework; and the pressure measurement short section is arranged inside the thermal-insulating cylinder body. The invention provides the heat-resistant gas injection multi-parameter logger, which has heat resistance and can obtain a plurality of groups of logging parameters.

Description

technical field [0001] The invention belongs to the field of petroleum production logging, and relates to a high-temperature-resistant steam injection multi-parameter well logging instrument, in particular to a multi-parameter combined well logging instrument mainly used in steam injection wells in high-temperature environments within 350°C. Background technique [0002] For the exploitation of heavy oil, it is necessary to adopt the method of high-temperature steam flooding, that is, the method of injecting high-temperature and high-pressure steam into the formation and then boring the well, and then proceeding to production. When performing multiparameter logging on such steam injection wells, they face much higher temperatures than conventional injection wells. Conventional multi-parameter logging tools do not use insulation cylinders for insulation, and electronic components, wires, and sensors cannot work in the high-temperature environment of steam injection wells. Mo...

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Problems solved by technology

Conventional multi-parameter logging tools do not use insulation cylinders for insulation, and electronic components, wires, and sensors cannot work in the high-temperature environment of steam injection wells

Moreover, the structure of the instrument is also difficult to meet the needs of high-temperature measurement, and its maximum operating temperature is generally lower than 175°C, which is difficult to meet the needs and complete the test task

The TPS-9000 high-temperature logging system is mostly used in China to measure steam injection wells, which can measure three parameters of temperature, pressure and flow at the same time. The downhole cable uses high-temperature-resistant steel pipe cables instead of conventional cables. The downhole instrument does not contain circuits, and the original measurement signal is transmitted. To the ground for processing, the measurement deviation is large and the cost is high

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