Prediction method, device and equipment for overflow layer in gypsum salt rock

Abstract

The invention provides a prediction method, device and equipment for an overflow layer in gypsum salt rock, and the method comprises the steps: recognizing the overflow layer of a to-be-developed gypsum salt rock region according to the logging information and / or logging curve of at least one drilling well, and obtaining a recognition result of the at least one drilling well, wherein the recognition result is used for representing whether an overflow layer exists in a detection area of each drilling well or not, forming a grading recognition plate of the overflow layer according to the recognition result, a logging curve and engineering complexity, and obtaining a seismic wavelet, a logging curve and a grading identification plate according to the identification result, the seismic wavelet, the logging curve and the grading identification plate which are obtained in advance;according to the method, the overflow layer prediction result of the to-be-developed gypsum salt rock area is obtained, accurate prediction of the overflow layer is achieved, safe drilling of the re-gypsum rock stratum is guaranteed, and engineering risks are avoided.

Description

Technical field [0001] Embodiments of the present invention relate to the field of oil and gas exploration and development, and more particularly to predictive methods, apparatus, and equipment of overflow layer in cream saline rock. Background technique [0002] During the drilling of the cream salt rock formation, the floral formation of a thin-shaped mudstone formation or a thin layer is often occurred, and overflows, which leads to different degrees of engineering complex. [0003] The overflow layer is typically a local low-speed enclosure, and its scale is presence, and there is a certain impact on the implementation of the speed field and the circle. At present, the identification method of the high pressure overflow layer in the oint salt rock formation is mainly based on the data acquired during the drilling process, and the area of ​​the unfine cannot be identified, resulting in the process of identifying Loating or overflow, unable to control engineering complex. Inve...

AI Technical Summary

Problems solved by technology

At present, the identification method for the high-pressure overflow layer in the gypsum-salt rock formation is mainly to identify the data obtained during the drilling process of the well logging, but it is impossible to identify the undrilled area, resulting in the identification process. In case of leakage or overflow, the engineering complexity cannot be effectively controlled

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