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Ancient landform recovery method and device for eliminating reverse fracture influence

A technology of paleogeomorphology restoration and paleogeomorphology, applied in measuring devices, seismology, geophysical surveys, etc., can solve problems such as stratum thickening, paleogeomorphology recovery is not accurate enough, and does not consider the influence of faults, etc., to achieve the effect of accurate characterization

Pending Publication Date: 2021-11-12
PETROCHINA CO LTD
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Problems solved by technology

[0005] The paleogeomorphology restoration methods in the prior art do not consider the influence of faults on paleogeomorphology, especially the problem that the existence of reverse faults causes the formation to thicken in a certain area, which makes the paleogeomorphology restoration inaccurate

Method used

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  • Ancient landform recovery method and device for eliminating reverse fracture influence
  • Ancient landform recovery method and device for eliminating reverse fracture influence
  • Ancient landform recovery method and device for eliminating reverse fracture influence

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0028] Such as figure 1 As shown in the schematic diagram of a paleogeomorphology restoration method that eliminates the influence of reverse faults in an embodiment of the present invention, an embodiment of the present invention provides a paleogeomorphology restoration method that eliminates the influence of reverse faults, and realizes accurate restoration of paleogeomorphology. The method includes:

[0029] Step 101: Determine the top interface and the bottom interface of the target layer according to the three-dimensional seismic data;

[0030] Step 102: Screen...

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Abstract

The invention provides an ancient landform recovery method and device for eliminating reverse fracture influence, and the method comprises the steps: determining a top interface and a bottom interface of a target layer according to three-dimensional seismic data; selecting the stratum with the reverse fracture repeated section from the target stratum; not carrying out tracking interpretation on the screened stratum with the reverse fracture repeated section; performing tracking interpretation on the remaining strata in the target stratum, and determining a top interface and a bottom interface of the target stratum after tracking interpretation; according to the top interface and the bottom interface of the target layer after tracking interpretation, determining the thickness of the reverse fracture repeated section stratum; and determining the ancient landform according to the thickness value of the reverse fracture repeated section stratum, the top interface of the target layer and the bottom interface of the target layer. According to the method and device, the illusion that the thickness of the stratum is increased due to the dislocation effect of the reverse fault on the stratum is considered, the top surface and the bottom surface of the stratum are determined by utilizing seismic data, so that the thickness of the stratum is calculated, and the ancient landform is accurately recovered.

Description

technical field [0001] The invention relates to the technical field of paleogeomorphology restoration, in particular to a paleogeomorphology restoration method and device for eliminating the influence of reverse faults. Background technique [0002] Paleogeomorphology research started in the 1950s, and my country began to carry out paleogeomorphology research in oil and gas exploration in the 1970s. The main work carried out includes paleogeomorphology restoration, division of paleogeomorphology units, and the control of paleogeomorphology on reservoirs. . [0003] Paleogeomorphology analysis is one of the important methods for the analysis of oil and gas-bearing basins. It is the result of a combination of structural deformation, differential compaction, sedimentary filling, and weathering and denudation. Among them, tectonic movement has the greatest impact, and a tectonic movement can cause changes in the overall appearance of the basin. The key to paleogeomorphology anal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30G01V1/36
CPCG01V1/302G01V1/36G01V2210/20
Inventor 滕团余谭开俊乐幸福陈更新
Owner PETROCHINA CO LTD
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