Drilling downhole anomaly monitoring device

Abstract

The present invention discloses a drilling downhole anomaly monitoring device. The device comprises: a data acquisition module for acquiring pre-drilling data and mid-drilling data of drilling; a pre-drilling anomaly prediction module for analyzing and obtaining potential anomaly distribution well sections and anomaly symptomatic parameters according to the pre-drilling data; and a mid-drilling anomaly monitoring module for monitoring whether the current drilling well section belongs to the potential anomaly distribution well sections or not according to the mid-drilling data, analyzing anomaly symptomatic parameters of the current drilling well section according to the mid-drilling data if the current drilling well section belongs to the potential anomaly distribution well sections, and determining whether the distribution well section is abnormal or not according to analysis results. According to the device, the whole production process of the drilling can be reflected more comprehensively and accurately, more accurate and reliable monitoring results can be obtained, so that alarm or warning can be ensured to give out in an early stage when drilling downhole anomaly generates, losses are maximumly reduced, and the device has an important significance to prevent and control generation of the drilling downhole anomaly.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a downhole anomaly monitoring device for drilling. Background technique [0002] The drilling process has a high degree of complexity, which also leads to the uncertainty of the downhole state. During the drilling construction process, especially in new areas and complex intervals, the possibility of downhole abnormalities always exists at any time. Whether it is possible to give a certain degree of alarm or warning in the early stage of downhole abnormalities in drilling is of great significance for preventing and controlling the development of downhole abnormalities in drilling and minimizing the losses caused by downhole abnormalities. significance. [0003] Existing downhole anomaly monitoring devices focus on the monitoring of drilling anomalies, and the monitoring of downhole anomalies in drilling is not comprehensive enough. Therefore, there is an inaccu...

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Problems solved by technology

[0003] The existing downhole anomaly monitoring devices for drilling are all focused on the monitoring of drilling anomalies, which are not comprehensive enough for the monitoring of downhole anomalies

Therefore, the results obtained by the existing downhole anomaly monitoring device are inaccurate.

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