Rapid acquisition system and processing method of mud logging engineering parameter data

Abstract

The invention relates to a fast logging engineering parameter data collecting system and a processing method thereof. The fast logging engineering parameter data collecting system collects hook loads, vertical pressure, torque and rotary table rotating speeds at a high speed, stores data in real time and analyzes time domain and frequency domain in real time, the logging data precision is improved, and a basis is laid for achieving the purposes that early warning is accurately given for well drilling abnormity and faults in time and drilling is carried out safely and effectively. A logging instrument collects current signals of the hook loads, the vertical pressure and the torque and voltage pulse signals of the rotary table rotating speeds, the three paths of 4-20 mA current signals are sent to a signal distributor, and the voltage pulse signals are sent to a photoelectric coupler. The three paths of the 4-20 mA current signals are sent to a signal distributor, the voltage pulse signals are respectively sent to a data collecting module, and the data collecting module samples the three paths of signals according to the highest 200 kHz and samples the voltage pulse signals according to the highest 10 kHz. The data collecting module carries out A / D conversion on the three paths of collected signals, and the converted signals and collected voltage pulse signals are sent to an upper computer. The upper computer processes the data. The signal distributor and the photoelectric coupler are connected with a direct-current power source at the same time.

Description

technical field [0001] The invention relates to a rapid acquisition system and processing method of mud logging engineering parameter data. Background technique [0002] Data acquisition is an important subject area involved and applied in mud logging work. Through high-speed acquisition of mud logging engineering parameters, the analysis of drilling engineering frequency domain and time domain information carried by the data can achieve the purpose of preventing drilling abnormalities. [0003] At present, the development of domestic engineering mud logging has received insufficient attention, the technology is single, the frequency of data collection is low, there is no complete time domain and frequency domain analysis and processing technology, and the comprehensiveness of mud logging parameters is poor. The engineering mud logging service judgment model included in the comprehensive mud logging instrument independently developed in China is mostly based on the judgment ...

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Problems solved by technology

[0003] At present, the development of domestic engineering mud logging has received insufficient attention, the technology is single, the frequency of data collection is low, there is no complete analysis and processing technology in the time domain and frequency domain, and the comprehensiveness of mud logging parameters is poor.

The engineering mud logging service judgment model included in the comprehensive mud logging instrument independently developed in China is mostly based on the judgment model of the French TDC mud logging instrument in the 1980s, and the data acquisition rate is still maintained at about 1Hz, resulting in a large amount of high-frequency information Lost, and the data is only recorded in the time domain, lacking evidence in the frequency domain, insufficient comprehensive analysis capabilities, and insufficient capture of abnormal information

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