Method for real-time monitoring of formation pressure by means of remote mud logging information

Abstract

The invention discloses a method for real-time monitoring of formation pressure by means of remote mud logging information. The method comprises the steps of selecting an adjoining well and acquiring comprehensive mud logging data, calculating the mud logging dc index of the adjoining well according to the comprehensive mud logging data, determining a normal trend line according to the mud logging dc index of the adjoining well, acquiring real-time information of a mud logging remote transmission system, calculating the value of the mud logging dc index according to the real-time information in real time, conducting real-time shaft pressure state analysis according to the well drilling state, drawing a mud logging remote information real-time monitoring result curve by means of the value of the mud logging dc index calculated in real time and a result of shaft pressure state analysis, and judging abnormal change of the formation pressure by means of the normal trend line of the adjoining well. According to the method, monitoring of the formation pressure by means of the remote mud logging information is achieved, the shaft pressure state can be analyzed during drilling, an anomaly alarm can be given, the occurrence of downhole accidents is reduced, and safe well drilling is achieved.

Description

technical field [0001] The present invention relates to a method of real-time monitoring formation pressure for oil drilling exploration and development, especially the formation pressure monitoring of remote transmission information at the well site, which can synchronize the real-time remote transmission of mud logging information at the well site and analyze formation pressure information and synchronous alerts. Background technique [0002] Petroleum operation sites are distributed in the wild, with many points and wide areas. It is a complex production process, often accompanied by a series of geological engineering anomalies, such as well leakage, abnormal gas detection, gas invasion, oil immersion, water immersion, overflow, well Swelling, blowout, etc. These abnormalities often lead to accidents in drilling engineering and cause huge economic losses. The process of remote transmission information logging and well control analysis at the well site is: the key paramet...

AI Technical Summary

Problems solved by technology

[0005] However, although the current mud logging remote transmission system can solve the storage of real-time data and basic data, it cannot perform wellbore parameter prediction and formation pressure analysis on the stored data. Connecting devices and preliminary data statistics, lack of technologies and methods for applying remote mud logging information to monitor formation pressure

Therefore, the current mud logging remote transmission system cannot fully meet the requirements of real-time monitoring of formation pressure and prediction of wellbore related parameters.

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