Analysis of the trend of changes in density and the nature of the distribution of pore channels by size using complex modeling
Relevance. The understanding of the degree and nature of the distribution of pore channels relative to their sizes based on capillarimetric studies allows us to use curves of relative phase permeability to solve various problems. In the practice of field development, a significant number of methods...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | Russian |
| Published: |
Tomsk Polytechnic University
2025-04-01
|
| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | https://izvestiya.tpu.ru/archive/article/view/4696 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Relevance. The understanding of the degree and nature of the distribution of pore channels relative to their sizes based on capillarimetric studies allows us to use curves of relative phase permeability to solve various problems. In the practice of field development, a significant number of methods are known for constructing a pore channel size distribution curve, including using a generalized mathematical model for both all core samples and individual rock samples. In conditions of the need for the rapid development of hard-to-recover reserves, the issue of determining the trend of changes in density and the nature of the distribution of pore channels by size is relevant and requires a solution based on the integration of well-known scientific and methodological approaches and the development of fundamentally new aspects of the interpretation of various dependencies. Aim. Identification of the degree and nature of changes in the density of the distribution of pore channels to reduce risks when optimizing the processes of field development and development of hard-to-recover reserves in conditions of limited volume of downhole (field) and core (laboratory) studies. Objects. Core samples of the formation АВ1/3 the Alym formation of the deposit N of Western Siberia, characterized by an inhomogeneous interlayer of sandy-siltstone and clay rocks with interlayers and lenses of carbonate deposits. Methods. The integrated use of well-known scientific and methodological approaches to the study of the trend in the distribution of pore channels by size in conjunction with the construction of various mathematical models based on the results of generalization of laboratory research data. Results. Curves of generalized and inverse generalized models are constructed for the most representative samples of reservoirs in Western Siberia. The authors have established the type and nature of the correlations necessary for calculating the initial capillary pressure and the maximum radius of the pore channels. Based on the inverse generalized model of the capillary curve using laboratory capillarimetric studies, the authors obtained the formula for the dependence of the fractional relative number of pore channels relative to their sizes (transverse radii). Reasonable recommendations are given on the use of the obtained dependencies to solve both various profile tasks of field development and fundamental ones related to the optimization of long-term deposits and the commissioning of hard-to-recover reserves into commercial operation, taking into account the limited number of exploration wells and, consequently, the minimum amount of laboratory research.
|
|---|---|
| ISSN: | 2500-1019 2413-1830 |