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DOI | 10.1306/03141817183 |
Discovery of the lower Cambrian high-quality source rocks and deep oil and gas exploration potential in the Tarim Basin, China | |
Zhu, Guangyou1,2; Chen, Feiran1; Wang, Meng1; Zhang, Zhiyao1; Ren, Rong1; Wu, Lin1 | |
2018-10-01 | |
发表期刊 | AAPG BULLETIN
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ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2018 |
卷号 | 102期号:10页码:2123-2151 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The global Precambrian-Cambrian system includes an important series of hydrocarbon-bearing strata. However, because rocks of this age are typically deeply buried, few petroleum exploration breakthroughs have been made, and the presence of source rocks remains somewhat controversial. Recently, commercial condensate and gas were discovered from the deep (similar to 6900 m [similar to 22,600 ft]) Zhongshen 1C (ZS1C) exploratory well drilled in the Tazhong uplift of the Tarim Basin, China, leading to renewed interest in the development of Cambrian source rocks in the basin. On the basis of outcrop reconnaissance and sample testing from around the Tarim Basin, we show that a set of high-quality source rocks were developed within the lower Cambrian Yuertusi Formation ((sic)(1)y), at the base of the lower Cambrian. These rocks are black shales and typically have a total organic carbon content between 2% and 6% but extending as high as 17% in selected regions. This marine sequence is 10-15 m (33-49 ft) thick in some outcrops along the margins of the basin. Seismic data indicate that these highquality source rocks may cover an area as large as 260,000 km(2) (100,000 mi(2)). Their main organic parent material was benthic multicellular algae. On the basis of high-temperature thermal simulations conducted on these source rocks, we show that the gas composition and carbon isotopes from the ZS1C well are similar to the products generated at a thermal evolution stage corresponding to a vitrinite reflectance of between 2.2% and 2.5%. Late-stage natural gas accumulated within these rocks over time. The delta S-34 correlation of organic sulfur compounds in the condensate with Cambrian sulfates provides further evidence for a (sic)(1)y source rock origin of the ZS1C condensate and gas. The Cambrian dolomites in association with a salt seal exhibit favorable geological conditions for large-scale hydrocarbon accumulation. A new set of deep exploration strata can, therefore, be developed, guiding future deep Cambrian hydrocarbon exploration in the Tarim Basin. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447260300009 |
WOS关键词 | ORGANIC-MATTER PRESERVATION ; SULFUR-ISOTOPIC COMPOSITIONS ; PALEOZOIC MARINE PETROLEUM ; NW CHINA ; TAZHONG AREA ; BLACK SHALES ; SOUTH CHINA ; BIOSTRATIGRAPHIC CORRELATION ; DIAMONDOID HYDROCARBONS ; YANGTZE PLATFORM |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24409 |
专题 | 地球科学 |
作者单位 | 1.PetroChina, Res Inst Petr Explorat & Dev, 20 Xueyuan Rd, Beijing 100083, Peoples R China; 2.PetroChina, Res Inst Petr Explorat & Dev, Geol & Geochem, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhu, Guangyou,Chen, Feiran,Wang, Meng,et al. Discovery of the lower Cambrian high-quality source rocks and deep oil and gas exploration potential in the Tarim Basin, China[J]. AAPG BULLETIN,2018,102(10):2123-2151. |
APA | Zhu, Guangyou,Chen, Feiran,Wang, Meng,Zhang, Zhiyao,Ren, Rong,&Wu, Lin.(2018).Discovery of the lower Cambrian high-quality source rocks and deep oil and gas exploration potential in the Tarim Basin, China.AAPG BULLETIN,102(10),2123-2151. |
MLA | Zhu, Guangyou,et al."Discovery of the lower Cambrian high-quality source rocks and deep oil and gas exploration potential in the Tarim Basin, China".AAPG BULLETIN 102.10(2018):2123-2151. |
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