A Quantitative Evaluation Method for Structural Uplift of Sedimentary Basins

Abstract

The invention discloses a quantitative evaluation method for structural uplift of sedimentary basins. Aiming at the difficult quantitative evaluation of structural uplift in sedimentary basins, the present invention uses the seismic stratigraphic interpretation technology based on seismic sections, integrates the principles of structural geology, and uses the thickness change rate of the residual stratum of the uplift and its slope to judge the distribution mode of the thickness change rate. Identify the type, scope, and magnitude of structural uplift, and combine relevant data to obtain parameters such as time and rate of structural uplift, so as to realize quantitative evaluation of structural uplift of sedimentary basins on two-dimensional and three-dimensional scales.

Description

Technical field[0001]The present invention belongs to the evaluation technology of the deposition basin analysis and oil and gas exploration and development. More specifically, it is related to the evaluation method of the construction of the sedimentary basin.Background technique[0002]Sedimentary Basin is a structural unit formed in a certain geological historical stage. It is an advantageous direction of oil gas transportation in the oil gas basin. The construction of ridges of the ridges have important to basin construction and oil and gas geological evaluation. significance. In the deposition basin, the formation and evolution of the analytical ridges are typically analyzed in the deletion of the formation, formation contact relationship, and constructive cross section. In terms of quantitative evaluation, the quantitative evaluation of the quantitative evaluation is mainly utilized, and many geological methods, ancient temperatures, geochemical and geophysical methods are quant...

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Problems solved by technology

Paleostructure restoration can be carried out by layer leveling method, balanced section method, "pagoda map" method, thickness map method, and three-dimensional structure restoration method. It is difficult to quantitatively recover the uplift amount and distribution of

At the same time, it is difficult to quantitatively evaluate the uplift rate of multi-phase active uplifts, as well as the uplift types and rates of different layers and different parts.

The method of calculating the amount of denudation is conducive to quantitatively obtaining the magnitude of uplift and uplift, but limited by the small number of sampling points, geological methods, well logging methods, paleogeothermal and geochemical methods cannot continuously reflect the structural uplift in different parts of the basin at different periods. Lift

Some tests are not only expensive, but also time-consuming, which cannot meet the needs of oil and gas exploration, development and production in time

In addition, different methods and techniques also have large errors and a certain scope of application, which cannot fully meet the quantitative evaluation of structural uplift in the basin.

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