«Environmental protection in oil and gas complex»

Tomographic evaluation of pore space structure for geoecological problems

UDC: 504.054+552.086+552.122
DOI: 10.33285/2411-7013-2022-3(306)-43-51

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russian Federation

Keywords: acid treatment, stimulation of extraction, microtomography, pore space model, reservoir porosity and permeability, efficient operation

Annotation:

A major role for the intensification of hydrocarbon extraction is played by the methods of acid treatment (AT) of reservoir rocks. At the same time, the advantage of using one or another AT technology is not always obvious. Used acidic water compositions can get into underground, water bodies, soils of various reasons. To reduce the risk of reservoir and environmental occurrence, it is necessary to match the results of detailed laboratory studies of the core, including when collecting microtomography. The described technology of tomographic imaging and the developed set of refinement algorithms will make it possible to obtain a three-dimensional model of the pore space, a model of reservoir porosity and permeability, analyze the internal structure of individual pores, their connectivity, reservoir porosity structures and anisotropy of the pore space before and after acid treatment of core samples, visualize received data. Refined models make it possible to more accurately understand the changes that affect reservoir and environmental pollution during AT.

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