A Modeling Method for Fault Fracture Zone

A modeling method and broken zone technology, applied in the field of reservoir description, can solve problems such as failure to consider faults, poor reliability, and inability to simulate the differences in the sealing properties of fault broken zones, so as to achieve the effect of improving oil and gas recovery.

Inactive Publication Date: 2017-04-05
YANGTZE UNIVERSITY
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Problems solved by technology

The fault model established in this case does not take into account that the fault is a geological body with a complex internal structure and a certain volume. It can only characterize the sealing properties of the fault by simulating the lithology of the fault blocks on both sides of the fault. Poor, and can not simulate the difference in sealing properties of different parts of the fault fracture zone

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  • A Modeling Method for Fault Fracture Zone
  • A Modeling Method for Fault Fracture Zone
  • A Modeling Method for Fault Fracture Zone

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

[0028] figure 1 The fault modeling mode under the existing technical conditions has been described in the background art, and will not be repeated here.

[0029] see Figure 2 to Figure 9 , the fault fracture zone modeling method of the present invention involves fault fracture zone 1, ascending plate 2, descending plate 3, trend line 4, well logging 5, model boundary 6, underwater distributary channel 7, distributary inter-distributary bay 8, and conduction zone 9 and a sealing zone 10, the fault fracture zone 1 includes a fracture filling zone 1.1, an induced fracture zone 1.2, a fracture zone boundary 1.3 and a fault plane 1.4.

[0030] Described method uses PETREL modeling software, comprises the steps:

[0031] Step 1. Identify the internal structure of th...

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Abstract

The invention discloses a fault fracture zone modeling method. The method includes the following steps: step one, identifying the internal structure of a fault fracture zone; step two, using two surface models to represent fracture zone boundaries of both sides of the fault fracture zone, the distance between the two surface models being determined by the width of the fault fracture zone; step three, applying a corresponding grid processing method to the fault fracture zone according to positional relations between the fault fracture zone and an ascending wall and descending wall and the internal structure of the fault fracture zone; and step four, performing gridding again to obtain a volume model of the fault fracture zone. The fault fracture zone modeling method in the invention can accurately simulate the internal structure of the fault fracture zone and blocking of different parts, establish a fault model that better satisfies an actual geological condition, and thus can be widely applied to the field of reservoir description.

Description

technical field [0001] The invention relates to the field of reservoir description, in particular to a modeling method for fault fracture zones. Background technique [0002] As the structural framework of geological modeling, fault modeling is the basis of geological modeling. If the fault model is not accurate, a geological model that conforms to the underground geological conditions cannot be established. [0003] In fault modeling, PETREL modeling software is mainly used to import geological fault data such as fault columns, fault polygons and structural top maps obtained from seismic data into modeling according to the data format requirements of the modeling software. software to build models of fault planes representing faults. [0004] In the existing research on faults, the sealing performance of faults is generally judged by the lithological relationship on both sides of the fault. figure 1 It is a typical existing fault modeling model. The fault surface (also ca...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/30G06T17/10
Inventor 李少华张昌民王利喻思羽王军宋道万史敬华
Owner YANGTZE UNIVERSITY
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