Multi-parameter monitoring device of oil well and working method thereof

Abstract

The invention discloses a multi-parameter monitoring device of an oil well and a working method thereof, and the device comprises a supporting cylinder arranged in a sleeve, a supporting cylinder coupling, an oil pump, a cable protector and an oil pipe, wherein the supporting cylinder is connected below the oil pump through the supporting cylinder coupling, and a multi-parameter testing instrument of the oil well, which is used for testing the temperature, pressure, water content and working fluid level of the oil well, is suspended and fixed on the supporting cylinder; the oil pump is arranged at the lower end of the oil pipe; the cable protector is connected to the oil pipe, and a channel for crossunder and binding of a single-core logging cable is arranged on the cable protector; a ground sleeve manifold and an oil pipe manifold form a wellhead device; one end of the single-core logging cable is connected with the multi-parameter testing instrument of the oil well, and the other end of the single-core logging cable is connected to a ground data collection device through the sleeve manifold; a wellhead cable sealing device and a sleeve pressure testing sensor are arranged on thesleeve manifold, and the sleeve pressure testing sensor is connected to the data collection device through a sleeve pressure signal wire; and the data collection device is connected with a wireless transmitting device. By adopting the device, the real-time and online monitoring of parameters, such as the underground temperature, the pressure, the water content and the working fluid level can be realized.

Description

technical field [0001] The invention relates to the technical field of oil well logging, in particular to an oil well multi-parameter monitoring device and a working method thereof. Background technique [0002] In the process of oilfield development and production, parameters such as temperature, pressure, water content and dynamic liquid level of oil wells are important production management data. Timely and accurate downhole monitoring data provide an important basis for formulating oil recovery production plans and predicting the development life of oil wells. [0003] At present, the water content of oil wells is mainly tested by manual sampling and testing. The test results cannot reflect the water content changes in the entire production process of oil wells in a timely and continuous manner, and at the same time increase the labor intensity of workers. In addition, when the echo method is used to test the dynamic liquid level of the oil well, due to the influence of ...

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Problems solved by technology

[0003] At present, the water content test of oil wells mainly adopts the method of manual sampling and testing. The test results cannot timely and continuously reflect the water content changes in the entire production process of oil wells, and at the same time increase the labor intensity of workers.

In addition, when the echo method is used to test the dynamic liquid level of the oil well, due to the influence of factors such as the "foam section" in the annular space and the wax deposition on the well wall, the test error is relatively large (ranging from tens of meters to hundreds of meters), which affects the accuracy of the oil field. Timely and correct evaluation of production wells

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