High-definition scanning observation method for ultra-heavy oil sandstone reservoirs

Abstract

The invention discloses a high-definition scanning observation technology for a super-heavy oil sandstone storage layer, relates to the field of super-heavy oil sandstone storage layer observation, and aims at providing a super-heavy oil sandstone storage layer high-definition scanning observation technology which is capable of visually expressing the heterogeneity of the storage layer, improving the precision and the integrity of description and improving the observation efficiency. The technology comprises the following steps: a, choosing a super-heavy oil sandstone storage-layer casting thin sheet; b, flat putting the super-heavy oil sandstone storage-layer casting thin sheet on a scanner and adjusting the scanner; c, previewing and scanning the target thin sheet, numbering formed photographs and saving; and d, observing and describing the microscopic characteristics of the super-heavy oil sandstone storage layer on a computer screen. The technology is effective supplement of restrictiveness of conventional microscope observation technology, helps to enrich description means of the super-heavy oil sandstone storage layer and improve the description technology of the super-heavy oil sandstone storage layer.

Description

technical field [0001] The invention relates to the field of super-heavy oil sandstone reservoir observation, in particular to a high-definition scanning observation technology for super-heavy oil sandstone reservoirs. Background technique [0002] Super-heavy oil sandstone reservoir observation technology is the basis of heavy oil sandstone reservoir research. At present, the observation technology of ultra-heavy oil sandstone reservoirs is based on microscope observation. The observation field of view of microscope technology is small, and the diameter of the main observation field is generally in the range of a few millimeters to smaller. [0003] The existing ultra-heavy oil sandstone reservoir description methods are mainly through casting thin sections. The size of the cast thin section is usually equivalent to the size of a postage stamp. When the bedding microstructure and the extension of the fracture in the super heavy oil sandstone reservoir are greater than 5-8...

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Problems solved by technology

However, the diameter of the field of view of the microscope is generally 2mm-5mm. When encountering large pores, cracks and large particles extending greater than 5mm, the observation can only be made by dividing them into many small areas for independent observation. It is very inconvenient to describe the spatial form of structural large pores and fractures

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