Petroleum geological features and exploration prospect of deep marine carbonate rocks in China onshore: A further discussion
Deep marine carbonate rocks have become one of the key targets of onshore oil and gas exploration and development for reserves replacement in China. Further geological researches of such rocks may practically facilitate the sustainable, steady and smooth development of the petroleum industry in the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2014-10-01
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| Series: | Natural Gas Industry B |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352854014000035 |
| _version_ | 1827264093673750528 |
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| author | Zhao Wenzhi Hu Suyun Liu Wei Wang Tongshan Li Yongxin |
| author_facet | Zhao Wenzhi Hu Suyun Liu Wei Wang Tongshan Li Yongxin |
| author_sort | Zhao Wenzhi |
| collection | DOAJ |
| description | Deep marine carbonate rocks have become one of the key targets of onshore oil and gas exploration and development for reserves replacement in China. Further geological researches of such rocks may practically facilitate the sustainable, steady and smooth development of the petroleum industry in the country. Therefore, through a deep investigation into the fundamental geological conditions of deep marine carbonate reservoirs, we found higher-than-expected resource potential therein, which may uncover large oil or gas fields. The findings were reflected in four aspects. Firstly, there are two kinds of hydrocarbon kitchens which were respectively formed by conventional source rocks and liquid hydrocarbons cracking that were detained in source rocks, and both of them can provide large-scale hydrocarbons. Secondly, as controlled by the bedding and interstratal karstification, as well as the burial and hydrothermal dolomitization, effective carbonate reservoirs may be extensively developed in the deep and ultra-deep strata. Thirdly, under the coupling action of progressive burial and annealing heating, some marine source rocks could form hydrocarbon accumulations spanning important tectonic phases, and large quantity of liquid hydrocarbons could be kept in late stage, contributing to rich oil and gas in such deep marine strata. Fourthly, large-scale uplifts were formed by the stacking of multi-episodic tectonism and oil and gas could be accumulated in three modes (i.e., stratoid large-area reservoir-forming mode of karst reservoirs in the slope area of uplift, back-flow type large-area reservoir-forming mode of buried hill weathered crust karst reservoirs, and wide-range reservoir-forming mode of reef-shoal reservoirs); groups of stratigraphic and lithologic traps were widely developed in the areas of periclinal structures of paleohighs and continental margins. In conclusion, deep marine carbonate strata in China onshore contain the conditions for widely and intensively preserving hydrocarbons, so large oil or gas fields are expected. |
| first_indexed | 2024-03-07T17:43:37Z |
| format | Article |
| id | doaj.art-199a8dbee1784105a2f31040b2542d32 |
| institution | Directory Open Access Journal |
| issn | 2352-8540 |
| language | English |
| last_indexed | 2025-03-22T03:40:35Z |
| publishDate | 2014-10-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | Natural Gas Industry B |
| spelling | doaj.art-199a8dbee1784105a2f31040b2542d322024-04-28T12:01:03ZengKeAi Communications Co., Ltd.Natural Gas Industry B2352-85402014-10-0111142310.1016/j.ngib.2014.10.002Petroleum geological features and exploration prospect of deep marine carbonate rocks in China onshore: A further discussionZhao WenzhiHu SuyunLiu WeiWang TongshanLi YongxinDeep marine carbonate rocks have become one of the key targets of onshore oil and gas exploration and development for reserves replacement in China. Further geological researches of such rocks may practically facilitate the sustainable, steady and smooth development of the petroleum industry in the country. Therefore, through a deep investigation into the fundamental geological conditions of deep marine carbonate reservoirs, we found higher-than-expected resource potential therein, which may uncover large oil or gas fields. The findings were reflected in four aspects. Firstly, there are two kinds of hydrocarbon kitchens which were respectively formed by conventional source rocks and liquid hydrocarbons cracking that were detained in source rocks, and both of them can provide large-scale hydrocarbons. Secondly, as controlled by the bedding and interstratal karstification, as well as the burial and hydrothermal dolomitization, effective carbonate reservoirs may be extensively developed in the deep and ultra-deep strata. Thirdly, under the coupling action of progressive burial and annealing heating, some marine source rocks could form hydrocarbon accumulations spanning important tectonic phases, and large quantity of liquid hydrocarbons could be kept in late stage, contributing to rich oil and gas in such deep marine strata. Fourthly, large-scale uplifts were formed by the stacking of multi-episodic tectonism and oil and gas could be accumulated in three modes (i.e., stratoid large-area reservoir-forming mode of karst reservoirs in the slope area of uplift, back-flow type large-area reservoir-forming mode of buried hill weathered crust karst reservoirs, and wide-range reservoir-forming mode of reef-shoal reservoirs); groups of stratigraphic and lithologic traps were widely developed in the areas of periclinal structures of paleohighs and continental margins. In conclusion, deep marine carbonate strata in China onshore contain the conditions for widely and intensively preserving hydrocarbons, so large oil or gas fields are expected.http://www.sciencedirect.com/science/article/pii/S2352854014000035China onshoreMarine carbonate rocksDeep zoneSource kitchenIntensive reservoirsResource potentialExploration prospect |
| spellingShingle | Zhao Wenzhi Hu Suyun Liu Wei Wang Tongshan Li Yongxin Petroleum geological features and exploration prospect of deep marine carbonate rocks in China onshore: A further discussion Natural Gas Industry B China onshore Marine carbonate rocks Deep zone Source kitchen Intensive reservoirs Resource potential Exploration prospect |
| title | Petroleum geological features and exploration prospect of deep marine carbonate rocks in China onshore: A further discussion |
| title_full | Petroleum geological features and exploration prospect of deep marine carbonate rocks in China onshore: A further discussion |
| title_fullStr | Petroleum geological features and exploration prospect of deep marine carbonate rocks in China onshore: A further discussion |
| title_full_unstemmed | Petroleum geological features and exploration prospect of deep marine carbonate rocks in China onshore: A further discussion |
| title_short | Petroleum geological features and exploration prospect of deep marine carbonate rocks in China onshore: A further discussion |
| title_sort | petroleum geological features and exploration prospect of deep marine carbonate rocks in china onshore a further discussion |
| topic | China onshore Marine carbonate rocks Deep zone Source kitchen Intensive reservoirs Resource potential Exploration prospect |
| url | http://www.sciencedirect.com/science/article/pii/S2352854014000035 |
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