Improved recovery method for burial history

A restoration method and burial history technology, applied in the field of improved burial history restoration, can solve problems such as inaccuracy and lack of consideration of iso-depth processing conditions, and achieve the effects of clear logic, high reliability and good precision

Active Publication Date: 2017-09-22
XI'AN PETROLEUM UNIVERSITY
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Problems solved by technology

[0004] The above researches all use the principle that the skeleton thickness does not change during the backstripping process of each stratum, but the calculation of the skeleton thickness uses the depth of the top and bottom boundaries of the strata at the present time, but this is no

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[0035] In order to make the above-mentioned steps, features and advantages of the present invention more obvious and easy to understand, the present invention enumerates the following steps to describe the specific implementation method in detail, and cooperates with the accompanying drawings to illustrate in detail, and finally provides three groups of geological complexity increasing sequentially The formation column data and the computer automatic backstripping results of the present invention are used as sample references.

[0036] Introduction to Burial History Restoration: figure 1 The middle black is discounted as the buried depth curve of the bottom boundary of a certain formation. During the deposition process, the overlying layer gradually thickened, and the stratum was gradually compacted. At t 2 Denudation begins to occur at time, t 1 time denudation ends, the formation is lifted due to denudation, and then gradually compacted to the critical time point t 0 time...

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Abstract

The invention discloses an improved recovery method for burial history. The method comprises the following steps that (1), all stratum parameters in current stratigraphic columns are measured through experiments; (2), the largest burial depth of all stratums of the current stratigraphic columns is found, and the framework thickness is calculated through the largest burial depth; and (3), stratigraphic column recovering is conducted and comprises two parts of top layer compaction removal treatment and underlayer correcting. According to the improved recovery method for the burial history, the framework thickness calculation method based on the largest burial depth and equivalent depth point treatment in the back-strip process is comprehensively considered, and the improved recovery method for the burial history is designed. Finally, through the object facing method, computer modeling is conducted on the burial history recovery method, stratigraphic column recovery algorithm is achieved, experimental analysis is conducted, and the experiments show that a burial history curve graph can be more clearly and accurately displayed, and the complex conditions such as stratum denudation and lifting can be well treated, so that the rationality and effectiveness of the improved recovery method for the burial history are certified.

Description

technical field [0001] The invention relates to the research fields of geological structure development, basin evolution and basin formation mechanism, and in particular relates to an improved method for restoring burial history. Background technique [0002] The stripping inversion technique is the most accurate and widely used technique in burial history restoration, and thus has attracted the attention of many researchers. Backstripping and inversion technology is based on the principle of sedimentary compaction, starting from the known present stratum column, denuding the top stratum layer by layer, so that the underlying strata can be lifted to the surface. During the recovery process, sedimentary compaction, single layer denudation and , multi-layer continuous denudation and other geological events until the denudation of all strata is completed. The end result is a stratigraphic column that corresponds to the age. [0003] At present, in the field of burial history ...

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Application Information

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IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 朱养鹏李鹏
Owner XI'AN PETROLEUM UNIVERSITY
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