Geochemical features of deep hydrocarbon migration and accumulation in Halahatang-Yingmaili area of the northern Tarim Basin

被引：0
作者：
Li, Sumei [1 ,2 ]
Zhang, Baoshou [3 ]
Xing, Lantian [4 ]
Sun, Hao [2 ]
Yuan, Xingyan [2 ]
机构：
[1] State Key Laboratory of Petroleum Resources and Prospecting, Beijing
[2] Institute of Earth Sciences, China University of Petroleum, Beijing
[3] PetroChina Tarim Oilfield Company, Korla, 841000, Xinjiang
[4] Lanzhou Center For Oil and Gas Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou, 730000, Gansu
来源：
Shiyou Xuebao/Acta Petrolei Sinica | 2015年 / 36卷
关键词：
Deep horizon of petroliferous basin; Hydrocarbons migration; Mode of hydrocarbon accumulation; Strike-slip fault; Tarim Basin;
D O I：
10.7623/syxb2015S2008
中图分类号：
学科分类号：
摘要：
Based on geologic and geochemical analysis, an inversion study is conducted on hydrocarbon features, hydrocarbon kitchen location, hydrocarbon migration and accumulation features in Halahatang-Yingmaili area of the northern Tarim Basin. The results indicate that crude oil has significantly different physical and chemical properties, but showing an ordered distribution. Moreover, the crude oil has similar genesis, although there is a significant difference in oil maturity. As shown by maturity correlation of oil-oil and oil-source rock, there is no comparability between crude oil in Yingmaili area and marlstone at the similar burial depth in the study area. The deep Ordovician crude oil in Halahatang area and the source rock at the burial depth of 6 500-7 500 m have an equivalent maturity, indicating adjacent depression is the hydrocarbon kitchen. Hydrocarbon migration and accumulation have following characteristics: (1) Quasi-variance accumulation, from low to high slope, oil and gas is distributed regularly in the form of light oil, medium oil and heavy oil, respectively; (2) Control of faults on hydrocarbon migration and accumulation, hydrocarbon accumulation mainly appears near the faults, and hydrocarbon fluid properties and reservoir quality are directly controlled by faults, hydrocarbons with high gas-oil ratio mainly occur in stress relief area of faults; (3) Significant control of weathering crust on hydrocarbon accumulation and distribution, hydrocarbons are mainly distributed in karst reservoir above and below the quasi-layered weathering crust, characterized by multi-phase filling and accumulation; (4) The mode of hydrocarbon accumulation is identified as allochthonous source-fault controlled hydrocarbon migration-quasi-variance accumulation-weathering crust reservoir-multi-phase superposition. © 2015, Science Press. All right reserved.
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页码：92 / 101
页数：9
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