The structure of the sedimentary complex of the Middle and South Caspian depressions (Azerbaijan sector)
The high degree of knowledge of the upper horizons of the sedimentary cover of the Middle and South Caspian depressions, given an insufficient increase in hydrocarbon reserves, leads to the need for a detailed approach to the search for oil and gas deposits in deep-seated sediments (over 6 km). Duri...
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| Дата: | 2021 |
|---|---|
| Автори: | , |
| Формат: | Стаття |
| Мова: | rus |
| Опубліковано: |
Subbotin Institute of Geophysics of the NAS of Ukraine
2021
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| Онлайн доступ: | https://journals.uran.ua/geofizicheskiy/article/view/239970 |
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| Назва журналу: | Geofizicheskiy Zhurnal |
Репозитарії
Geofizicheskiy Zhurnal| id |
journalsuranua-geofizicheskiy-article-239970 |
|---|---|
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ojs |
| institution |
Geofizicheskiy Zhurnal |
| collection |
OJS |
| language |
rus |
| format |
Article |
| author |
Yusubov, N.P. Guliyev, I.S. |
| spellingShingle |
Yusubov, N.P. Guliyev, I.S. The structure of the sedimentary complex of the Middle and South Caspian depressions (Azerbaijan sector) |
| author_facet |
Yusubov, N.P. Guliyev, I.S. |
| author_sort |
Yusubov, N.P. |
| title |
The structure of the sedimentary complex of the Middle and South Caspian depressions (Azerbaijan sector) |
| title_short |
The structure of the sedimentary complex of the Middle and South Caspian depressions (Azerbaijan sector) |
| title_full |
The structure of the sedimentary complex of the Middle and South Caspian depressions (Azerbaijan sector) |
| title_fullStr |
The structure of the sedimentary complex of the Middle and South Caspian depressions (Azerbaijan sector) |
| title_full_unstemmed |
The structure of the sedimentary complex of the Middle and South Caspian depressions (Azerbaijan sector) |
| title_sort |
structure of the sedimentary complex of the middle and south caspian depressions (azerbaijan sector) |
| title_alt |
Структура осадочного комплекса Среднекаспийской и Южно-Каспийской впадин (Азербайджанский сектор) |
| description |
The high degree of knowledge of the upper horizons of the sedimentary cover of the Middle and South Caspian depressions, given an insufficient increase in hydrocarbon reserves, leads to the need for a detailed approach to the search for oil and gas deposits in deep-seated sediments (over 6 km). During the geological interpretation of new highly informative seismic data, as well as data of deep drilling and petrological core studies, there were revealed obvious shortcomings in the concepts of the origin and evolution of the Middle and South Caspian depressions. These ideas misinterpret evolution, especially the South Caspian Basin, which is characterized by a number of unique features: very thick sedimentary cover (up to 22 km), extremely high sedimentation rate, low heat flow and reservoir temperatures, abnormally high pore and reservoir pressures, high clay content of the section, etc. The main purpose of the study was to elucidate the regional structure and features of the dissection of the sedimentary cover of the Middle and South Caspian depressions, the conditions of occurrence and distribution of facies and thicknesses of individual complexes of deposits.
The paper analyzes the results of some previous studies of the geological structure of the Middle and South Caspian depressions based on the data of deep seismic sounding, seismological and gravimetric observations. We consider the main conclusions of these studies, about the geological structure of the sedimentary complex of the region’s, very outdated and subject to revision.
The results of seismic stratigraphic analysis of seismic data allowed the authors to identify new data about the tectonic structure and express a completely different point of view regarding the structure of the sedimentary cover in the region.
The work also touches on the issue associated with the tectonics of the region and the alleged subduction zone here. |
| publisher |
Subbotin Institute of Geophysics of the NAS of Ukraine |
| publishDate |
2021 |
| url |
https://journals.uran.ua/geofizicheskiy/article/view/239970 |
| work_keys_str_mv |
AT yusubovnp thestructureofthesedimentarycomplexofthemiddleandsouthcaspiandepressionsazerbaijansector AT guliyevis thestructureofthesedimentarycomplexofthemiddleandsouthcaspiandepressionsazerbaijansector AT yusubovnp strukturaosadočnogokompleksasrednekaspijskojiûžnokaspijskojvpadinazerbajdžanskijsektor AT guliyevis strukturaosadočnogokompleksasrednekaspijskojiûžnokaspijskojvpadinazerbajdžanskijsektor AT yusubovnp structureofthesedimentarycomplexofthemiddleandsouthcaspiandepressionsazerbaijansector AT guliyevis structureofthesedimentarycomplexofthemiddleandsouthcaspiandepressionsazerbaijansector |
| first_indexed |
2024-04-21T19:43:28Z |
| last_indexed |
2024-04-21T19:43:28Z |
| _version_ |
1796974689532248064 |
| spelling |
journalsuranua-geofizicheskiy-article-2399702021-10-05T12:32:26Z The structure of the sedimentary complex of the Middle and South Caspian depressions (Azerbaijan sector) Структура осадочного комплекса Среднекаспийской и Южно-Каспийской впадин (Азербайджанский сектор) Yusubov, N.P. Guliyev, I.S. The high degree of knowledge of the upper horizons of the sedimentary cover of the Middle and South Caspian depressions, given an insufficient increase in hydrocarbon reserves, leads to the need for a detailed approach to the search for oil and gas deposits in deep-seated sediments (over 6 km). During the geological interpretation of new highly informative seismic data, as well as data of deep drilling and petrological core studies, there were revealed obvious shortcomings in the concepts of the origin and evolution of the Middle and South Caspian depressions. These ideas misinterpret evolution, especially the South Caspian Basin, which is characterized by a number of unique features: very thick sedimentary cover (up to 22 km), extremely high sedimentation rate, low heat flow and reservoir temperatures, abnormally high pore and reservoir pressures, high clay content of the section, etc. The main purpose of the study was to elucidate the regional structure and features of the dissection of the sedimentary cover of the Middle and South Caspian depressions, the conditions of occurrence and distribution of facies and thicknesses of individual complexes of deposits. The paper analyzes the results of some previous studies of the geological structure of the Middle and South Caspian depressions based on the data of deep seismic sounding, seismological and gravimetric observations. We consider the main conclusions of these studies, about the geological structure of the sedimentary complex of the region’s, very outdated and subject to revision. The results of seismic stratigraphic analysis of seismic data allowed the authors to identify new data about the tectonic structure and express a completely different point of view regarding the structure of the sedimentary cover in the region. The work also touches on the issue associated with the tectonics of the region and the alleged subduction zone here. Высокая степень изученности верхних горизонтов осадочного чехла Среднекаспийской и Южно-Каспийской впадин в комплексе с недостаточным приростом запасов углеводородов приводит к необходимости детального подхода к проблеме поиска месторождений нефти и газа в глубокозалегающих отложениях (более 6 км). При геологической интерпретации новых высокоинформативных данных сейсморазведки, а также данных глубокого бурения и петрологических исследований керна в представлениях о возникновении и эволюции Среднекаспийской и Южно-Каспийской впадин обнаруживаются явные недостатки. Эти представления неправильно трактуют эволюцию, особенно Южно-Каспийской впадины, характеризующейся уникальными особенностями: огромной мощностью осадочного чехла (до 22 км), исключительно высокой скоростью осадконакопления, низким тепловым потоком и пластовыми температурами, аномально высокими поровыми и пластовыми давлениями, высокой глинистостью разреза и др. Основная цель исследования — выяснение региональной структуры и особенностей расчлененности осадочного чехла Среднекаспийской и Южно-Каспийской впадин, условий залегания и распределения фаций и мощностей отдельных комплексов отложений. Приведен анализ результатов некоторых ранее выполненных исследований, направленных на изучение геологического строения впадин по данным глубинного сейсмического зондирования, сейсмологических и гравиметрических наблюдений. Выяснено, что основные выводы этих исследований о геологической структуре осадочного комплекса отложений региона устарели и требуют пересмотра. Обсуждены результаты сейсмостратиграфического анализа данных сейсморазведки методом общей глубинной точки, что позволило авторам выявить новые данные о тектоническом строении и изложить новую точку зрения относительно структуры осадочного чехла в рассматриваемом регионе. Затронут также вопрос, связанный с разломной тектоникой региона и cубдукцией, якобы имевшей здесь место. Subbotin Institute of Geophysics of the NAS of Ukraine 2021-10-05 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/239970 10.24028/gzh.v43i4.239970 Geofizicheskiy Zhurnal; Vol. 43 No. 4 (2021); 199-216 Геофизический журнал; Том 43 № 4 (2021); 199-216 Геофізичний журнал; Том 43 № 4 (2021); 199-216 2524-1052 0203-3100 rus https://journals.uran.ua/geofizicheskiy/article/view/239970/239641 http://creativecommons.org/licenses/by/4.0 |