Well drilling comprehensive speed accelerating optimization expert system

Abstract

The invention provides a well drilling comprehensive speed accelerating optimization expert system. The expert system comprises an adjacent well data acquisition unit, a drilling following data acquisition unit, a geological property analysis module, a drill bit efficient rock breaking datum line generation unit, a drilling efficiency evaluation module and a well drilling real-time optimization module, wherein the adjacent well data acquisition unit is used for acquiring adjacent well finishing drilling data and adjacent well geological data; the drilling following data acquisition unit is used for acquiring current well drilling following real time data association; the geological property analysis module is connected with the adjacent well data acquisition unit and the drilling following data acquisition unit, and is used for confirming a rock compression strength section and a rock property section of the current drilling well; the drill bit efficient rock breaking datum line generation unit is connected with the geological property analysis module, and is used for obtaining an efficient rock breaking datum line; the drilling efficiency evaluation module is connected with the drilling following data acquisition unit, and is used for calculating rock breaking efficiency evaluation indexes; the well drilling real-time optimization module is connected with the drilling following data acquisition unit, the drilling efficiency evaluation module and the drill bit efficient rock breaking datum line generation unit, and is used for optimizing drilling efficiency. The expert system can break through the limitation that penetration rate is taken as performance evaluation, realizes quantifying evaluation of rock breaking efficiency, and achieves the goal of improving drilling speed.

Description

technical field [0001] The invention relates to the field of drilling optimization, in particular to an expert system for comprehensive drilling speed-up optimization. Background technique [0002] Drilling engineering is an in-ground project in the petroleum industry that opens up a channel from the surface to the underground target layer and collects information on the downhole working conditions of the drilled formations in order to increase reserves and production. The uncertainty of the formation and the concealment of the downhole working conditions make it a A high-risk, high-investment multidisciplinary system engineering. As the saying goes, "Know yourself and know the enemy, and you can fight a hundred battles without imperil." "Self" refers to one's own technical and equipment capabilities, while "the other" refers to the formation characteristics and downhole working conditions. To achieve "knowledge", it is necessary to continuously improve equipment and techni...

AI Technical Summary

Problems solved by technology

[0003] The traditional drilling efficiency evaluation method is to analyze the difference between the actual drilling data and the completion data of adjacent wells, but this method can only reflect the relative efficiency evaluation between wells, and it is difficult to provide guidance for optimizing drilling efficiency Sexual measures, with geographical restrictions, not real-time

Another way is to test the drilling test, which is to use the maximum ROP achieved under the given formation, drill bit, downhole drilling tool assembly and hydraulic conditions to determine the corresponding optimal parameter combination, but it takes a lot of time and analysis during the drilling process process

The above efficiency evaluation methods all use the ROP as a comparable index to evaluate the rock breaking efficiency, which has great limitations

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