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Well logging during drilling data real-time processing method

A technology for real-time data processing and logging while drilling, which is applied in electrical digital data processing, special data processing applications, instruments, etc. Swing etc.

Active Publication Date: 2015-08-26
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology

These methods are less satisfactory for LWD data resampling applications because they are prone to morphological swings or are computationally expensive
In addition, methods such as kriging and fractal can also be used for LWD data interpolation, but they are not easy to be popularized due to their low degree of automation or cumbersome steps

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  • Well logging during drilling data real-time processing method
  • Well logging during drilling data real-time processing method
  • Well logging during drilling data real-time processing method

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Embodiment Construction

[0056] The method for real-time processing of logging-while-drilling data will be described in detail below in conjunction with the accompanying drawings.

[0057] The overall scheme of a real-time processing method of logging-while-drilling data of the present invention is that firstly, the thin-layer threshold method combined with the peak-to-valley ratio method is used to detect and eliminate real-time data singularities, so as to eliminate the high-frequency oscillation interference of logging-while-drilling The "burr" phenomenon caused by the real-time logging while drilling can improve the signal-to-noise ratio of the real-time logging while drilling; then the gridded analysis of the real-time logging while drilling data is carried out, and the logging while drilling real-time data resampling model is established to realize the logging while drilling Well real-time data gridding and sampling interval equidistant processing to meet the needs of different LWD curves, betwee...

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Abstract

The invention discloses a well logging during drilling data real-time processing method. According to the method, real-time data singular point detection and elimination are performed through combination of a thin layer threshold value method and a peak peak / valley valley ratio method, thereby eliminating 'burr' phenomenon caused by high frequency oscillatory interference of well logging during drilling, and improving signal to noise ratio of a real-time well logging during drilling curve; and meshing analysis is performed on well logging during drilling data acquired in real time, meshing of the well logging during drilling real-time data and equal interval processing of sampling intervals are realized through establishment of a well logging during drilling real-time data resampling model, and related comparison demands of different well logging during drilling curves, the well logging during drilling curve and a well logging during drilling curve of internal storage, a real-time well logging during drilling curve and a cable well logging during drilling curve are met.

Description

technical field [0001] The invention relates to a real-time processing method of logging-while-drilling data in the technical fields of petroleum drilling and logging-while-drilling. Background technique [0002] In geosteering drilling and logging while drilling in the petroleum industry, fast logging while drilling interpretations such as sand and mudstone section division and qualitative analysis of oil and water layers are usually performed through real-time logging while drilling curves. Since the LWD data is uploaded to the ground through the downhole mud pulse signal, the signal is often subject to some interference in the transmission channel, which causes the real-time LWD data received on the ground to oscillate, resulting in "glitch" phenomenon. In addition, because the geological structure and the degree of softness and hardness of the formation directly affect the drilling speed, and the different drilling speed will affect the sampling density of the real-time ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 杨锦舟马海张海花张智勇杨全进唐海全丁景丽施斌全林楠陈沛沛李运升
Owner CHINA PETROCHEMICAL CORP
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