DOI: 10.1007/s00531-015-1253-4
Scopus记录号: 2-s2.0-84944556176
论文题名: Estimation of subsurface formation temperature in the Tarim Basin, northwest China: implications for hydrocarbon generation and preservation
作者: Liu S. ; Lei X. ; Feng C. ; Hao C.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2016
卷: 105, 期: 5 起始页码: 1329
结束页码: 1351
语种: 英语
英文关键词: Drill stem test
; Formation temperature
; Oil window
; Tarim Basin
; Temperature logging
; Thermal properties
Scopus关键词: geoaccumulation
; geothermal gradient
; geothermal power
; heat flow
; hydrocarbon exploration
; hydrocarbon generation
; logging (geophysics)
; source rock
; temperature
; temperature anomaly
; temperature effect
; thermodynamics
; China
; Tarim Basin
; Xinjiang Uygur
; Calluna vulgaris
英文摘要: Subsurface formation temperature in the Tarim Basin, northwest China, is vital for assessment of hydrocarbon generation and preservation, and of geothermal energy potential. However, it has not previously been well understood, due to poor data coverage and a lack of highly accurate temperature data. Here, we combined recently acquired steady-state temperature logging data with drill stem test temperature data and measured rock thermal properties, to investigate the geothermal regime and estimate the subsurface formation temperature at depth in the range of 1000–5000 m, together with temperatures at the lower boundary of each of four major Lower Paleozoic marine source rocks buried in this basin. Results show that heat flow of the Tarim Basin ranges between 26.2 and 66.1 mW/m2, with a mean of 42.5 ± 7.6 mW/m2; the geothermal gradient at depth of 3000 m varies from 14.9 to 30.2 °C/km, with a mean of 20.7 ± 2.9 °C/km. Formation temperature estimated at the depth of 1000 m is between 29 and 41 °C, with a mean of 35 °C, while 63–100 °C is for the temperature at the depth of 3000 m with a mean of 82 °C. Temperature at 5000 m ranges from 97 to 160 °C, with a mean of 129 °C. Generally spatial patterns of the subsurface formation temperature at depth are basically similar, characterized by higher temperatures in the uplift areas and lower temperatures in the sags, which indicates the influence of basement structure and lateral variations in thermal properties on the geotemperature field. Using temperature to identify the oil window in the source rocks, most of the uplifted areas in the basin are under favorable condition for oil generation and/or preservation, whereas the sags with thick sediments are favorable for gas generation and/or preservation. We conclude that relatively low present-day geothermal regime and large burial depth of the source rocks in the Tarim Basin are favorable for hydrocarbon generation and preservation. In addition, it is found that the oil and gas fields discovered in the Tarim Basin are usually associated with relatively high-temperature anomalies, and the upward migration and accumulation of hot geofluids along faults as conduit from below could explain this coincidence. Accordingly, this thermal anomaly could be indicative of hydrocarbon exploration targets in the basin. © 2015, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944556176&doi=10.1007%2fs00531-015-1253-4&partnerID=40&md5=d355eaa013bf4cc5f69bad28821f88bd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70135
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, China; Key Laboratory of Coast and Island Development, Ministry of Education, Nanjing University, Nanjing, China
Recommended Citation:
Liu S.,Lei X.,Feng C.,et al. Estimation of subsurface formation temperature in the Tarim Basin, northwest China: implications for hydrocarbon generation and preservation[J]. International Journal of Earth Sciences,2016-01-01,105(5)