Idioma:

Charging of Carboniferous volcanic reservoirs in the eastern Chepaizi Uplift, Junggar Basin (northwestern China) constrained by oil geochemistry and fluid inclusion

Chang Xiangchun, Chang Xiangchun ; Wang Yue, Wang Yue ; Shi Bingbing, Shi Bingbing ; Xu Youde, Xu Youde

AAPG bulletin, 2019-07, Vol.103 (7), p.1625-1652 [Periódico revisado por pares]

American Association of Petroleum Geologists

Texto completo disponível

Citações Citado por

Enviar para

Título:
Charging of Carboniferous volcanic reservoirs in the eastern Chepaizi Uplift, Junggar Basin (northwestern China) constrained by oil geochemistry and fluid inclusion
Autor: Chang Xiangchun, Chang Xiangchun ; Wang Yue, Wang Yue ; Shi Bingbing, Shi Bingbing ; Xu Youde, Xu Youde
Assuntos: aliphatic hydrocarbons ; alkanes ; andesites ; aromatic hydrocarbons ; Asia ; Baogutu Formation ; basalts ; breccia ; C-13/C-12 ; carbon ; Carboniferous ; Cenozoic ; chemical composition ; Chepaizi Field ; Chepaizi Uplift ; China ; chromatograms ; Chunfeng Field ; Chunguang Field ; connectivity ; Cretaceous ; Economic geology ; energy sources ; Far East ; faults ; fluid inclusions ; fractures ; gammacerane ; gas chromatograms ; genesis ; geophysical methods ; geophysical profiles ; geophysical surveys ; Hongche Fault ; Hongshanzi Field ; hopanes ; hopanoids ; hydrocarbons ; igneous and metamorphic rocks ; igneous rocks ; inclusions ; isotope ratios ; isotopes ; Junggar Basin ; Jurassic ; mass spectra ; Mesozoic ; microthermometry ; migration ; n-alkanes ; Neogene ; normal faults ; northwestern China ; oil and gas fields ; oil wells ; one-dimensional models ; organic compounds ; Paleogene ; paleosalinity ; paleotemperature ; Paleozoic ; Permian ; petrography ; petroleum ; petroleum accumulation ; petroleum exploration ; Petrology ; phytane ; pristane ; pyroclastics ; reconstruction ; reserves ; reservoir rocks ; reverse faults ; sample preparation ; seismic methods ; seismic profiles ; Shawan Formation ; simulation ; source rocks ; spectra ; stable isotopes ; steranes ; steroids ; structural traps ; subsidence ; surveys ; Taxihe Formation ; terpanes ; Tertiary ; thermal history ; thrust faults ; traps ; triterpanes ; tuff ; unconformities ; uplifts ; volcanic rocks ; Wuerhe Formation ; Xiaoguai Field ; Xingguang Field ; Xinjiang China
É parte de: AAPG bulletin, 2019-07, Vol.103 (7), p.1625-1652
Descrição: Substantial amounts of petroleum were recently discovered in the Carboniferous andesite, tuff, breccia, and basalt reservoirs of the Chepaizi uplift in the western Junggar Basin. However, the charging history of the Carboniferous petroleum reservoir is poorly understood. Oil-oil correlation studies indicate that all of the oils were mainly derived from the middle Permian Wuerhe Formation source rocks, possibly mixed with a small contribution from Carboniferous Baogutu Formation source rocks in the neighboring Changji sag. Based on the petrographic and microthermometry of fluid inclusions, two hydrocarbon charging episodes are defined; these episodes were characterized by a low-peak-range homogenization temperature (Th) distribution (80°C-90°C) and high salinity (13.22-13.42 wt. % NaCl) and a high-peak-range Th distribution (120°C-130°C) and low salinity (4.89-11.72 wt. % NaCl), respectively. Through one-dimensional basin modeling and pressure-volume-temperature-composition simulation, the burial-thermal histories for wells P61, P66, P668, and P663 were reconstructed, and their trapping temperatures of the hydrocarbon inclusions were calculated to be higher than their corresponding highest paleotemperature (i.e., 56.8°C, 53.7°C, 60.9°C, and 58.1°C, respectively), implying fast hydrocarbon charging processes promoted by deep hydrothermal fluids. Associated with the hydrocarbon generation history, sealing process of the Hongche fault, and regional tectonic evolution, these two hydrocarbon charging events were deduced as the adjustments of oils previously accumulated along the Hongche fault zone, because of the tectonic extension in the Paleogene and regional tilting in the Neogene, respectively. The general direction of oil charging was traced from south to north and from east to west, as indicated by the molecular parameters of nitrogen-bearing compounds and C20 + C21 triaromatic steroids/C20 + C21 + C26-C28 triaromatic steroids (TA(I)/TA(I+II)), which roughly coincided with the active fracturing.
Editor: American Association of Petroleum Geologists
Idioma: Inglês

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Charging of Carboniferous volcanic reservoirs in the eastern Chepaizi Uplift, Junggar Basin (northwestern China) constrained by oil geochemistry and fluid inclusion

Chang Xiangchun, Chang Xiangchun ; Wang Yue, Wang Yue ; Shi Bingbing, Shi Bingbing ; Xu Youde, Xu Youde

American Association of Petroleum Geologists

Buscando em bases de dados remotas. Favor aguardar.