Peculiarities of deep wells construction in complicated mining and geological conditions of the Ciscaucasia
The depletion of gas, oil and condensate in Mesozoic sediments of most of the exploited fields in the Northern Caucasus requires active involvement in the development of the Jurassic carbonate complex of Western Ciscaucasia with depth below 5400 m. Construction of deep exploratory wells in the regio...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
North-Caucasus Federal University
2022-09-01
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| Series: | Наука. Инновации. Технологии |
| Subjects: | |
| Online Access: | https://scienceit.elpub.ru/jour/article/view/284 |
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| Summary: | The depletion of gas, oil and condensate in Mesozoic sediments of most of the exploited fields in the Northern Caucasus requires active involvement in the development of the Jurassic carbonate complex of Western Ciscaucasia with depth below 5400 m. Construction of deep exploratory wells in the region is an important national economic task. The article considers and analyzes the causes of complications in the construction of deep wells due to difficult mining and geological conditions of abnormally high reservoir pressures (the coefficient of the anomalous > 1.8) and formation temperature (above 200 °С), the presence of acidic components in formation fluids. The traditional method of drilling deep wells with repression control in the intervals of drilling fluid-saturated layers is characterized by low technological efficiency and increased probability of complications - drilling fluids losses, gas flows. In this regard, the construction of deep exploration wells in the North Caucasus region requires new technological solutions using innovative approaches. |
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| ISSN: | 2308-4758 |