Origin of deep strata gas of Tazhong in Tarim Basin, China

Zhu, Guangyou; Zhang, Baotao; Yang, Haijun; Jin, Sheng; Han, Jianfa

doi:10.1016/j.orggeochem.2014.03.003

Cited by 48 publications

(27 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because the 12 C 12 C bond would be the first to break down, 12 C is more involved in TSR than 13 C, therefore 13 C would remain in the residual hydrocarbons, which would be enriched in 13 C after the reaction. Therefore, the carbon isotopes of hydrocarbons would be heavier after TSR, whereas the carbon isotopes of CO 2 would be comparatively lighter (Zhu et al, , 2014. ␦ 13 C 1 primarily ranges from −35‰ to −32‰ and ␦ 13 C 2 from −34‰ to −27‰ (Table 1).…”

Section: Evidence For Tsr Genesismentioning

confidence: 99%

Giant gas discovery in the Precambrian deeply buried reservoirs in the Sichuan Basin, China: Implications for gas exploration in old cratonic basins

Zhu

Wang

Xie

et al. 2015

Precambrian Research

Self Cite

132

View full text Add to dashboard Cite

Section: Evidence For Tsr Genesismentioning

confidence: 99%

Giant gas discovery in the Precambrian deeply buried reservoirs in the Sichuan Basin, China: Implications for gas exploration in old cratonic basins

Zhu

Wang

Xie

et al. 2015

Precambrian Research

Self Cite

132

View full text Add to dashboard Cite

“…2,3,5,10 The source rock and reservoir in the Tarim marine sedimentary basin are mainly developed in the Palaeozoic formation, which has a relatively deep buried depth, old source rock, high thermal evolution, several structural activities, and complex hydrocarbon accumulation process. 11 These features make it hard to predict the oil and gas distribution. Thus, a fine geochemical study of oil and gas in the deep formation is of scientific significance and exploration value to demonstrate petroleum origin and genesis, especially the exploration potential in deep formation.…”

Section: Introductionmentioning

confidence: 99%

Separation and Characterization of Sulfur Compounds in Ultra-deep Formation Crude Oils from Tarim Basin

et al. 2015

Self Cite

View full text Add to dashboard Cite

Sulfur compounds in two representative deep crude oils (Ha9, 6598−6710 m; ZS1C, 6861−6944 m) with distinct levels of maturity from Tarim Basin, China, were analyzed by positive-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). The thiophenic and sulfidic compounds were selectively separated from the crude oils with high purity and recovery by the methylation/demethylation approach and further characterized in detail by gas chromatography (GC) coupled with a sulfur chemiluminescence detector (SCD) and GC−mass spectrometry (MS). The two crude oils have a large difference in sulfur compound composition, which are both unique compared to common crude oils. A homologue series of 1,1-dimethylhexahydrodibenzothiophenes, which has been found as highly resistant organic sulfur compounds in diesel hydrodesulfurization, was detected in Ha9 crude oil. This is the first time that these biomarker-like compounds have been identified in crude oil. Thiadiamondoids (1−3 cages) with more structural isomers than reported oils as well as various acyclic sulfides, which probably derived from alkyl sulfides, were identified in the sulfidic fraction of the ZS1C crude oil, which indicates that the crude oil has an unusual geological history. The selective separation technique would offer broad prospects for geochemical research on sulfur compounds in crude oils, including their compound-specific 34 S and 13 C analyses.

show abstract

“…Moreover, the hydrocarbon source rock is ancient in history and features intensive thermal evolution. In addition to other factors like complex hydrocarbon accumulation process, it is very difficult for us to forecast the marine facies hydrocarbon distribution (Zhu et al, 2014a;2014b), which in turn sets a hurdle to exploration of marine facies carbonate rock oil and gas. Recently, in Tarim Basin's Tabei Rewapu area, a largescale oilfield was discovered at the depth of 7000 m, which further evidenced there is huge oil exploration potential in deep layer of West China.…”

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Origin of deep strata gas of Tazhong in Tarim Basin, China

Cited by 48 publications

References 62 publications

Giant gas discovery in the Precambrian deeply buried reservoirs in the Sichuan Basin, China: Implications for gas exploration in old cratonic basins

Giant gas discovery in the Precambrian deeply buried reservoirs in the Sichuan Basin, China: Implications for gas exploration in old cratonic basins

Separation and Characterization of Sulfur Compounds in Ultra-deep Formation Crude Oils from Tarim Basin

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

Contact Info

Product

Resources

About