Method for predicting crack of reservoir stratum of granite buried hill

Abstract

The invention relates to a method for predicting the crack of a reservoir stratum of a granite buried hill, and the method comprises the following steps: 1), carrying out the ancient landform recovery of the top surface of a buried hill in a target region; 2), carrying out the interpolation of the top surface (the ancient landform) of the buried hill after the last leveling, and generating an ancient landform contour map; 3), recognizing the trench and ridge of the ancient landform of the buried hill; 4), carrying out the depiction and extraction of the trench and ridge distributed regions; 5), predicting a crack growth region. The method is used for the prediction of the crack of the reservoir stratum of the granite buried hill, and predicting the crack growth region through the recognition and extraction of the trench (higher) and ridge (lower) of the ancient landform of the buried hill. Moreover, a triangle method is employed for recognizing the trench and ridge of the ancient landform in a process, thereby enabling the trench and ridge prediction to be standardized, and enabling the crack prediction workload, compared with the workload of a conventional geologic work method, to be greatly reduced.

Description

technical field [0001] The invention relates to a fracture prediction method, in particular to a fracture prediction method for granite buried hill reservoirs. Background technique [0002] Domestic research on fractured reservoirs has a history of several decades. Before the 1990s, it was basically limited to traditional geological methods, and only studied fracture identification methods from the data of the wellbore itself; The company has carried out or is carrying out a large number of researches on cracks. In recent years, PetroChina Research Institute of Exploration and Development has formed a multidisciplinary fracture research project team including experts in geology, logging, seismic and reservoir engineering. By summarizing the exploration and development practices of more than ten fractured reservoirs at home and abroad, exploring A set of comprehensive geological evaluation techniques for fracture identification and distribution prediction. In general, the i...

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Problems solved by technology

However, due to the extremely complex distribution of fractures, the research is difficult, and their description and prediction are difficult and hot spots in the petroleum industry.

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