Geochemical evidence for coal-derived hydrocarbons and their charge history in the Dabei Gas Field, Kuqa Thrust Belt, Tarim Basin, NW China

Zhang, Shuichang; Zhang, Bin; Zhu, Guangyou; Wang, Huitong; Li, Zhenxi

doi:10.1016/j.marpetgeo.2011.02.006

Cited by 71 publications

(46 citation statements)

References 24 publications

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“…1B). It is about 400 km from east to west and 30e120 km from north to south, with an area of about 28 Â 10 3 km 2 (Zhang et al, 2011). The Kuqa Foreland Basin has mainly experienced three tectonic evolution stages including a peripheral foreland basin stage (from the Late Permian to the Middle Triassic), an extensional rift basin stage (from the Late Triassic to the Middle Jurassic) and a rejuvenated foreland basin stage (since the early Neogene) (Graham et al, 1993;Wei et al, 2000;.…”

Section: Geological Settingmentioning

confidence: 99%

“…In addition, the relative abundance of diahopanes and diasteranes can indicate acidic catalysis by clay minerals in oxidizing or sub-oxidizing depositional environments (Rubinstein et al, 1975). Oils sourced from coaly humic depositional environments generally contain more diahopanes and diasteranes than oils from lacustrine source rocks (Zhang et al, 2011). Furthermore, the relative contents of the diaC 30 H and C 29 Ts of oils are strongly dependent on the depositional environment of the source rocks.…”

Section: Oil Typingmentioning

confidence: 99%

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Hydrocarbon sources and charge history in the Southern Slope Region, Kuqa Foreland Basin, northwestern China

Liu

Jiang

Liu

et al. 2016

Marine and Petroleum Geology

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Section: Geological Settingmentioning

confidence: 99%

Section: Oil Typingmentioning

confidence: 99%

Hydrocarbon sources and charge history in the Southern Slope Region, Kuqa Foreland Basin, northwestern China

Liu

Jiang

Liu

et al. 2016

Marine and Petroleum Geology

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“…Presently, deep-layer hydrocarbon pools, which go beyond hydrocarbon stability temperature and lower depth limit, were discovered both at home and abroad (Zhu et al, 2012a;2012b), and these discoveries will undoubtedly pose a challenge to traditional hydrocarbon formation theories and accumulation knowledge. Due to this, it will be difficult for us to perfectly explain a series of new problems resulting from deep oil & gas exploration by traditional hydrocarbon formation theories and accumulation theories (Sun et al, 2009a;2009b;Pan et al, 2010;Zhang et al, 2011a;2011c). As a matter of fact, hydrocarbon preservation's lower temperature limit and effective reservoir burial depth's lower limit may vary largely due to different basin properties, or maybe these lower limits refer to a wide depth range (Zhu et al, 2006;Ma et al, 2007), and we can not give a definite answer by now.…”

Section: Introductionmentioning

confidence: 99%

Geology and Hydrocarbon Accumulation of the Large Ultra-Deep Rewapu Oilfield in Tarim Basin, China

Zhu

Liu

Zheng

et al. 2015

Energy Exploration & Exploitation

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Over the past five years, oil and gas exploration to marine facies carbonate rock in China took on a fast-growing tendency, and a lot of large-scale oil and gas fields were discovered in succession. Particularly in the north of Tarim Basin, the large-scale Rewapu oil field was recently discovered in the Ordovician carbonate rock layer system with buried depth of 7,000 meters, manifesting that a significant potential of exploration exists in Tarim Basin's deep layer and ultra deep layer of Tarim basin. The results indicate that reservoirs of Rewapu oilfield are low porosity and low permeability layers karst reservoirs, reservoir temperature is around at 160 ℃ with oil, and the crude oil comes from the upper Ordovician source rock of the Manjaer depression. The hydrocarbon accumulation time is in the Late Permian, and since the Triassic sedimentation, the reservoir is in the continuous process of burying. It belongs to the old oil and gas system. Due to low geothermal gradient and late quick deep burial, oil reservoir has yet to be cracked, so well-preserved old oil reservoir can be discovered at the depth of 7000 m. The Ordovician carbonate reservoir in Rewapu was a fracture-cavity oil reservoir, and the oil and gas distribution and enrichment are controlled not by the local structure, but by the distribution and the development degree of Ordovician carbonate reservoir. The reservoirs of Rewapu block are mainly distributed in the Ordovician Yijianfang formation and at the top Yingshan formation, and the reservoir development degree was controlled by the karstification, the degree of fracture development and the sedimentation facies, concentrating into belts in plane and not controlling by the depth vertically. The overlying strata are limestone of Tumuxiuke formation and marls and limestone of Sangtamu formation in the upper Ordovician. Rewapu oil reservoir features stratified oil and mainly contains normal oil with low viscosity and high wax. Research results show that Ordovician reservoirs in Rewapu block have relatively large depth of burial, but they are still favorable in quality and sit along the path for the oil and gas's northward migration. Therefore, this block has immense resources potential and boasts good exploration and development outlook. In this paper, we study Rewapu block oil reservoir's geological features and hydrocarbon accumulation mechanism, which is of important significance for directing the exploration to oil and gas at the deep layer and ultra deep layer of Tarim Basin.

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“…The Kelasu-Yiqikelike thrust belt and Qiulitage thrust belt are the most important units for oil and gas accumulation. A number of gas condensate fields have been discovered in these tectonic units (Zhan et al, 2011;Zhang et al, 2011a;Zhu et al, 2012). The primary source rocks in the Kuqa depression are in the Triassic-Jurassic strata including shale, carbonaceous shale and coal (Zhao et al, 2002;Liang et al, 2003).…”

Section: Geological Backgroundmentioning

confidence: 99%

Application of the monoterpane ratio (MTR) to distinguish marine oils from terrigenous oils and infer depositional environment in northern Tarim Basin, China

Cheng

Wang

Huang

et al. 2015

Organic Geochemistry

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Geochemical evidence for coal-derived hydrocarbons and their charge history in the Dabei Gas Field, Kuqa Thrust Belt, Tarim Basin, NW China

Cited by 71 publications

References 24 publications

Hydrocarbon sources and charge history in the Southern Slope Region, Kuqa Foreland Basin, northwestern China

Hydrocarbon sources and charge history in the Southern Slope Region, Kuqa Foreland Basin, northwestern China

Geology and Hydrocarbon Accumulation of the Large Ultra-Deep Rewapu Oilfield in Tarim Basin, China

Application of the monoterpane ratio (MTR) to distinguish marine oils from terrigenous oils and infer depositional environment in northern Tarim Basin, China

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