دورية أكاديمية
NUMERICAL SIMULATION OF CARBONATE ROCKS DISSOLUTION NEAR THE WELLBORE
| العنوان: | NUMERICAL SIMULATION OF CARBONATE ROCKS DISSOLUTION NEAR THE WELLBORE |
|---|---|
| المؤلفون: | Zhibek Kairatovna Akasheva, Bakytzhan Kalzhanovich Asilbekov, Karlygash Alimkhanova Soltanbekova, Aziz Anarbaevich Kudaikulov |
| المصدر: | Вестник КазНУ. Серия математика, механика, информатика, Vol 112, Iss 4, Pp 78-92 (2021) |
| بيانات النشر: | Al-Farabi Kazakh National University, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Mechanical engineering and machinery LCC:Electronic computers. Computer science |
| مصطلحات موضوعية: | acid treatment, carbonate core, dissolution mode, damkohler number, thiele modulus, Mechanical engineering and machinery, TJ1-1570, Electronic computers. Computer science, QA75.5-76.95 |
| الوصف: | This paper examines the process of wormholes formation during hydrochloric acid treatment of well bottom-hole zone in carbonate formations. An algorithm for solving the problem of wormhole formation in a porous medium for a two-dimensional case was developed. Two-scale model (porescale and Darcy’s scale) taking into account convection, diffusion, and chemical reaction were used in this work in order to describe the dissolution of carbonates with hydrochloric acid (hydrochloric acid treatment). The initial distribution of the porosity field was generated as a distribution of random numbers around some mean value. Based on the distribution of the initial porosity field, the initial permeability field of the rock was calculated. The random distribution was used to describe the heterogeneity of the actual rock. The rest of the study parameters were taken from known experiments on the dissolution of carbonate cores. The numerical model was built for solving the system of equations for acid dissolution, and carbonate dissolution modes with hydrochloric acidwere obtained depending on the Damkohler number, Thiele modulus on the pore-scale and Darcy’s scale as a result of this research. Also, the optimal Damkohler numbers (injection rates) were found. The computer code for the problem of the development/growth of wormholes in a porous medium based on the developed algorithm was built using the C++ programming language. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Kazakh Russian |
| تدمد: | 1563-0277 2617-4871 |
| العلاقة: | https://bm.kaznu.kz/index.php/kaznu/article/view/948/633Test; https://doaj.org/toc/1563-0277Test; https://doaj.org/toc/2617-4871Test |
| DOI: | 10.26577/JMMCS.2021.v112.i4.07 |
| الوصول الحر: | https://doaj.org/article/93899207efe34513a6bd3a87a064532fTest |
| رقم الانضمام: | edsdoj.93899207efe34513a6bd3a87a064532f |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 15630277 26174871 |
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| DOI: | 10.26577/JMMCS.2021.v112.i4.07 |