Downhole data monitoring system and method
A technology for downhole data and monitoring systems, applied in transmission systems, signal transmission systems, radio transmission systems, etc., can solve the problems of low possibility of long-distance transmission, fast attenuation of sound waves, and large environmental interference, and achieve easy analysis and processing. Save manpower and material resources and improve the effect of transmission depth
Pending Publication Date: 2021-06-04
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
The mud pulse transmission method is widely used in the drilling process due to the use of drilling fluid transmission; sound waves have not been applied to production practice due to fast attenuation, large environmental interference, and difficulty in receiving; electromagnetic waves have fast transmission speed, high safety and low cost. The other two wireless transmissions have incomparable advantages, but due to the signal attenuation caused by the conductivity of the formation, the possibility of long-distance transmission is low. At present, the transmission depth of electromagnetic signals is a key factor restricting the development and application of electromagnetic transmission technology
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0037] In the existing technology, the conventional downhole data monitoring instrument system is prone to failure in the harsh environment of high temperature and high pressure downhole, which increases the number of repeated measurements; downhole testing instruments and cables destroy the pressure field and temperature field near the fluid during repeated downhole , reducing the measurement accuracy, and the cost is higher.
[0038] figure 1 A structural block diagram of a downhole data monitoring system according to an embodiment of the present invention is shown. Such as figure 1 As shown, the monitoring system 100 includes a signal transmitting module 101 , a relay transmission module 102 and a ground monitoring module 103 .
[0039] Wh...
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The invention provides an underground data monitoring system, which comprises a signal transmitting module used for transmitting an acquired underground measurement signal through a first electromagnetic signal after the underground measurement signal is subjected to modulation and power amplification processing; a relay transmission module, used for receiving the first electromagnetic signal transmitted by the signal transmitting module, demodulating the first electromagnetic signal into a second electromagnetic signal and transmitting the second electromagnetic signal, and the second electromagnetic signal and the first electromagnetic signal being different in frequency and intensity; and a ground monitoring module, used for receiving the second electromagnetic signal transmitted by the relay transmission module, processing and analyzing the second electromagnetic signal and then displaying an underground parameter curve and a numerical value so as to reflect the change of the underground parameter in real time. According to the invention, the transmission depth of electromagnetic signals can be effectively improved, so that the transmission depth is not limited by the stratum conductivity; underground data can be obtained through the ground monitoring module, the collected data can be displayed in a real-time curve and numerical form, and analysis and processing by workers are facilitated.
Description
technical field [0001] The invention relates to the technical field of oilfield development, in particular to a downhole data monitoring system and method. Background technique [0002] With the rapid development of society and economy, the human demand for oil and gas resources is increasing day by day, the scope of oil and gas exploration and development continues to expand, there are more and more special oil and gas reservoirs, and the underground oil and gas storage environment is becoming more and more complex. How to realize refined exploitation, control and realize the modernization and intelligentization of oilfield production management in the process of oil and gas exploitation has become an urgent problem to be solved in the current oil and gas production. Real-time and accurate acquisition of temperature and pressure information of downhole oil layers in oil production is not only of great significance for understanding the characteristics of oil reservoirs, ana...
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IPC IPC(8): G08C17/02H04B7/155H02J7/14
CPCG08C17/02H04B7/15528H02J7/14
Inventor 付道明马文云刘欢乐方舒吴俊霞
Owner CHINA PETROLEUM & CHEM CORP