Micro-ancient landform restoration method
A technology of paleogeomorphology restoration and paleogeomorphology, applied in the direction of seismic signal processing, etc., can solve problems such as high or low restoration accuracy, inability to conduct quantitative research, and paleogeomorphology restoration stays in the qualitative stage, achieving the effect of improved restoration accuracy and strong applicability
Active Publication Date: 2016-02-17
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology
However, most of the current research on paleogeomorphology restoration is still at the qualitative stage, and quantitative research cannot be carried out. The amount of sedimentary record data determines the level of restoration accuracy.
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[0031] figure 1 It is a flow chart of an embodiment of the micro-paleogeomorphology recovery method according to the present invention, which is used to recover the micro-paleogeomorphology corresponding to the target terrain based on the target terrain. The method may include step S101, measuring the current sediment distribution P on the target terrain C . In step S101, seismic, logging and drilling data can be used to obtain the required current sediment distribution P C , which is well known to those skilled in the art.
[0032] In step S103, one or more known sediment distributions P E (E=1, 2, ..., n, n is a positive integer greater than or equal to 1) and the current sediment distribution P C A similar known sediment distribution is used as a reference sediment distribution P S , where P S for P 1 to P n one of the. Each known sediment distribution P E can correspond to a known paleogeomorphology G E . Correspondingly, the reference sediment distribution P ...
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The invention provides a micro-ancient landform restoration method for restoring a micro-ancient landform corresponding to a target terrain based on the target terrain. The micro-ancient landform restoration method comprises the following steps: measuring current sedimentary body distribution on the target terrain; determining one known sedimentary body distribution similar to the current sedimentary body distribution in one or multiple sedimentary body distributions as a reference sedimentary body distribution, wherein each known sedimentary body distribution corresponds to one known ancient landform, and the known ancient landform corresponding to the reference sedimentary body distribution is taken as a reference ancient landform; determining to transform the reference sedimentary body distribution to a first transformation relation of the current sedimentary body distribution; transforming the reference ancient landform by virtue of the first transformation relation, and taking a deformation result as the micro-ancient landform corresponding to the target terrain. According to the micro-ancient landform restoration method, the restoration precision of the ancient landform is increased to a new level, and the restoration quantification is realized; furthermore, multiple different terrains can be restored.
Description
technical field [0001] The invention relates to the field of seismic exploration and development of oil and gas and coalbed methane, in particular to a method for restoring micro-paleogeomorphology. Background technique [0002] Paleogeomorphology is the main factor controlling the development and distribution of sedimentary facies in oil and gas basins, and to a certain extent controls the reservoir-cap assemblage of late reservoirs. Accurate paleogeomorphology restoration is crucial for oil and gas exploration. Paleogeomorphology restoration refers to the use of seismic logging data to restore the topographical form at a certain age. Restoration of paleogeomorphology is helpful for understanding paleogeography, distribution of paleontology, and tectonic evolution characteristics, etc., as well as revealing the configuration relationship between provenance and sedimentary system, and revealing the controlling factors and distribution rules of effective sand bodies and high-...
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IPC IPC(8): G01V1/28
Inventor 张元福张高阳高维维姜在兴王敏
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)