A seismic facies driven high-precision sedimentary microfacies recovery method for deep carbonate rocks

By employing a seismic-driven sedimentary microfacies reconstruction method, combined with 3D seismic and drilling logging data, the problem of insufficient accuracy in sedimentary facies reconstruction during deep carbonate rock exploration has been solved, enabling the creation of high-precision sedimentary microfacies maps.

CN119199996BActive Publication Date: 2026-03-31SOUTHWEST PETROLEUM UNIV
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Patent Information

Application Number
CN202411319782.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-09-23
Publication Date
2026-03-31
Estimated Expiration
2044-09-23

AI Technical Summary

Technical Problem

Traditional sedimentary facies reconstruction methods suffer from insufficient accuracy, high subjectivity, and difficulty in accurately depicting sedimentary facies evolution in deep carbonate rock exploration, especially in areas with low drilling density.

Method used

A high-precision sedimentary microfacies reconstruction method driven by seismic facies was adopted. By combining three-dimensional seismic data, drilling and logging data and outcrop data, an isochronous sequence stratigraphic framework was established. High-precision isochronous sedimentary microfacies maps were drawn by utilizing seismic attribute optimization and sedimentary facies transformation relationships.

Benefits of technology

It enables accurate prediction of sedimentary facies zone boundaries even with limited drilling and outcrops, improving the accuracy of sedimentary feature reflection and increasing the agreement rate with actual drilling.

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Abstract

The application discloses a kind of seismic facies drive deep carbonate high-precision sedimentary microfacies recovery methods, comprising: basic data collection;Well-seismic calibration;Establish regional isochronous sequence stratigraphic framework;Logging interpretation;Sequence framework within sedimentary facies division: seismic facies division;Establish seismic facies-sedimentary facies conversion relationship;Isochronous sequence stratigraphic framework within division strata slice;Optimization seismic attribute;Establish single factor sedimentary index-seismic attribute relationship;Attribute volume isochronous strata slice;Seismic facies-sedimentary facies under the constraint of high-precision isochronous sedimentary microfacies drawing.The application can accurately predict sequence within sedimentary facies belt boundary by establishing sedimentation-seismic correlation under the condition of less drilling, outcrop;Further optimization can reflect the seismic attribute of sedimentary characteristics, calculate isochronous strata slice;Isochronous sedimentary facies map is obtained by attribute-sedimentary correlation conversion.In practical application, good effect is obtained, and the coincidence rate with actual drilling is high.
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