Research progress and key issues of ultra-deep oil and gas exploration in China.
In: Petroleum Exploration & Development, Jg. 50 (2023-12-01), Heft 6, S. 1333-1344
Online
academicJournal
Zugriff:
Based on the recent oil and gas discoveries and geological understandings on the ultra-deep strata of sedimentary basins, the formation and occurrence of hydrocarbons in the ultra-deep strata were investigated with respect to the processes of basin formation, hydrocarbon generation, reservoir formation and hydrocarbon accumulation, and key issues in ultra-deep oil and gas exploration were discussed. The ultra-deep strata in China underwent two extensional-convergent cycles in the Meso-Neoproterozoic Era and the Early Paleozoic Era respectively, with the tectonic-sedimentary differentiation producing the spatially adjacent source-reservoir assemblages. There are diverse large-scale carbonate reservoirs such as mound-beach, dolomite, karst fracture-vug, fractured karst and faulted zone, as well as over-pressured clastic rock and fractured bedrock reservoirs. Hydrocarbons were accumulated in multiple stages, accompanied by adjusting and finalizing in the late stage. The distribution of hydrocarbons is controlled by high-energy beach zone, regional unconformity, paleo-high and large-scale fault zone. The ultra-deep strata endow oil and gas resources as 33% of the remaining total resources, suggesting an important successive domain for hydrocarbon development in China. The large-scale pool-forming geologic units and giant hydrocarbon enrichment zones in ultra-deep strata are key and promising prospects for delivering successive discoveries. The geological conditions and enrichment zone prediction of ultra-deep oil and gas are key issues of petroleum geology. [ABSTRACT FROM AUTHOR]
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Titel: |
Research progress and key issues of ultra-deep oil and gas exploration in China.
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Autor/in / Beteiligte Person: | HE, Dengfa ; JIA, Chengzao ; ZHAO, Wenzhi ; XU, Fengyin ; LUO, Xiaorong ; LIU, Wenhui ; TANG, Yong ; GAO, Shanlin ; ZHENG, Xiujuan ; LI, Di ; ZHENG, Na |
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Zeitschrift: | Petroleum Exploration & Development, Jg. 50 (2023-12-01), Heft 6, S. 1333-1344 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 2096-4803 (print) |
DOI: | 10.1016/S1876-3804(24)60470-2 |
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