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Small-scale fracture prediction imaging method

A fracture prediction and imaging method technology, applied in the field of petroleum exploration, can solve the problems of small-scale fracture prediction and display distortion, and achieve the effects of reducing work risks and costs, improving prediction accuracy and high yield

Active Publication Date: 2015-09-16
恒泰艾普集团股份有限公司
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Problems solved by technology

[0003] Aiming at the defects in the prior art, the present invention solves the problem of small-scale fracture prediction display distortion

Method used

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Embodiment Construction

[0018] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0019] like figure 1 , is shown in a flow chart of an imaging method for small-scale crack prediction in an embodiment of the present invention. The imaging method includes the following steps:

[0020] Step S101, obtaining the relative density, direction and distribution of small-scale fractures. In the area to be imaged, the actual seismic data acquisition of seismic bins is carried out, and the seismic bins are 25X25 square meters or 15X15 square meters bins. After that, fracture prediction analysis is carried out to obtain the relative density, direction and distribution of small-scale fractures. The prediction of the relative density and direction of small-scale fractures based on earthquakes is realized by using the anisotropy analysis and calculation technology in FRS (Hengtai Aipu Petroleum and Gas Technology Service Co., Ltd.’s oil and gas reservoir ...

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Abstract

The invention discloses a small-scale fracture prediction imaging method. The method comprises the following steps: carrying out fracture prediction analysis on actual seismic data in an area to be imaged to obtain relative density, direction and distribution of small-scale fractures; in the distribution range, setting grid imaging parameters according to the relative density and direction of the small-scale fractures; and carrying out imaging on the area to be imaged according to the grid imaging parameters, and the relative density and direction of the small-scale fractures. Therefore, the problem of distorted display of small-scale fracture prediction is solved. Fracture development relative density and direction superposed images are allowed to be clear and to be more identical with actual geologic rules; prediction precision of small-scale fracture reservoirs is improved; working risk and cost are reduced; exploitation investment is allowed to be more accurate; and higher benefit can be obtained.

Description

technical field [0001] The invention relates to the field of petroleum exploration and is applied to reservoir prediction, in particular to an imaging method for small-scale fracture prediction. Background technique [0002] With the development and utilization of oil and gas resources, the reserves of conventional porous oil and gas reservoirs are decreasing day by day, and the difficulty of development is gradually increasing. Fractures, as oil and gas storage places, have attracted the attention of many petroleum workers. Fractured reservoirs refer to fractures as the main place, and the research on reservoirs has gradually developed from conventional porous reservoirs to other types of reservoirs, especially fractured reservoirs with storage spaces and seepage channels. According to the study of reservoirs, there is a geological structure with dispersed and interconnected isolated pores in the reservoir, which increases the effective porosity and has high permeability ch...

Claims

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Application Information

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IPC IPC(8): G01V1/28
Inventor 张梅华孙庚文郭海华
Owner 恒泰艾普集团股份有限公司
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