Fracture fractal characteristic optimization computation method

A technology of optimization calculation and fractal characteristics, applied in the field of oil and gas field exploration and development, can solve the problems of time-consuming and laborious prediction of fractal dimension, inaccuracy, heavy workload of manual means, etc.

Inactive Publication Date: 2015-03-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0004] The present invention aims to solve the above problems, and provides an optimal calculation method for fracture fractal characteristics, which solves the problems of

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  • Fracture fractal characteristic optimization computation method

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specific Embodiment approach

[0044] Structurally located in the west of Dongtai Depression in Subei Basin, Jinhu Sag is a faulted basin developed in Late Cretaceous. It starts from the Jianhu uplift in the north, extends to the Tianchang uplift in the south, adjoins the Zhangbaling uplift in the west, and borders the Lingtang Bridge and Liubao uplifts in the east, spanning Jiangsu and Anhui provinces geographically, with an area of ​​about 5,000km 2 , is the largest sedimentary sag in Subei Basin ( Image 6 ). Under the control of the NE-trending Jianhu uplift and Tianchang uplift, restricted by the NE-trending Liubao low uplift, Lingtangqiao low uplift, and boundary Yangcun fault, during the depositional period of the Funing Formation, faults in the south and overlaps in the north, It is a dustpan-shaped depression that is steep in the south and gentle in the north, and spreads in a northeast direction.

[0045] The structure of Jinhu sag is a simple half-graben with single-fault faults and crossings. ...

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Abstract

The invention relates to the field of exploration and development of oil and gas fields, in particular to a fracture fractal characteristic optimization computation method. After datamation of a facture zone, parameters of statistical boxes are defined by setting boundary parameters and initial positions, the statistical boxes are moved constantly through program writing, fractal dimension values of the positions where the statistical boxes are located are calculated, and therefore programmed calculation of fracture fractal characteristics is realized. The fracture fractal characteristic optimization computation method has high practical value on the aspects of fracture fractal characteristic quantitative evaluation, fracture fractal characteristic quantitative description and the like, is low in prediction cost and high in operability, and greatly reduces the expense of manpower; evaluation results have certain guiding significance in the aspects of predicting the distribution characteristics of oil and gas exploration and development key areas, fracture dominant distribution areas and low-level-sequence faults and the like.

Description

technical field [0001] The invention relates to the field of exploration and development of oil and gas fields, in particular to an optimization calculation method for fracture fractal characteristics. Background technique [0002] In the study of fault structures, people have realized that faults and fractures have statistical self-similarity in geometric, kinematic and dynamic characteristics, which is the embodiment of fractal theory in structural geological research. More and more studies have shown that the rock fragmentation process has random self-similarity, and the distribution and geometry of fractures have obvious fractal characteristics. Fractal dimension is an accurate and effective index for quantitative evaluation of fault structure. The fractal dimension value of a fault is not only related to the length of the fault, but also related to the number, length and plane combination characteristics of the faults. Faults and fractures are consistent in origin and ...

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Application Information

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IPC IPC(8): G01V1/28
Inventor 刘敬寿戴俊生张红玉姜明玉李照源徐珂任启强
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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