Petroleum Exploration and Development >
Composition and origin of molecular compounds in the condensate oils of the Dabei gas field, Tarim Basin, NW China
Received date: 2019-01-07
Revised date: 2019-04-10
Online published: 2019-07-03
Supported by
Supported by the China National Science and Technology Major Project.(2016ZX05004-004)
The Dabei gas field in the Kuqa Depression of the Tarim Basin is the most complex and deep continental condensate gas field in China. Comprehensive two-dimensional gas chromatography-time of flight mass spectrometer (GC×GC-TOFMS) analysis was conducted on five condensate oil samples from this field. The results show that the samples have n-alkane series in complete preservation and rich adamantanes. According to the methyladamantane index, the condensate oil is the product of the source rock with vitrinite reflectance (Ro) of 1.3%-1.6%. According to the gas maturity calculated through carbon isotope and vitrinite reflectance, the natural gas is corresponding to Ro of 1.3%-1.7%, reflecting that the natural gas and condensate oil are basically formed during the same period at the high maturity stage of source rock. The Dabei gas field has favorable geological conditions for hydrocarbon accumulation: thick salt rock in the Paleogene acts as a regional high-quality caprock directly overlying the high-quality sandstone reservoir of the Cretaceous, the coal source rocks have high hydrocarbon generation intensity and provide continuous oil and gas, and the subsalt thrust structures develop in rows with rich faults, providing migration pathways for oil and gas migration. These factors together controlled the formation of the Dabei gas field.
Guangyou ZHU , Linxian CHI , Zhiyao ZHANG , Tingting LI , Haijun YANG , Weiyan CHEN , Kun ZHAO , Huihui YAN . Composition and origin of molecular compounds in the condensate oils of the Dabei gas field, Tarim Basin, NW China[J]. Petroleum Exploration and Development, 2019 , 46(3) : 504 -517 . DOI: 10.1016/S1876-3804(19)60031-5
| [1] | DAI Jinxing . Coal-derived gas theory and its discrimination. Chinese Science Bulletin, 2018,63(14):1290-1305. |
| [2] | DAI Jinxing, CHEN Jianfa, ZHONG Ningning , et al. Large gas field and its sources in China. Beijing: Science Press, 2003: 83-93. |
| [3] | DAI Jinxing, NI Yunyan, HUANG Shipeng , et al. Significance of coal-derived gas study for natural gas industry development in China. Nature Gas Geoscience, 2014,25(1):1-22. |
| [4] | DAI Jinxing. Coal-derived gas fields and gas sources in China. Beijing: Science Press, 2016. |
| [5] | ZOU Caineng, DU Jinhu, XU Chunchun , et al. Formation, distribution, resource potential, prediction and discovery of Sinian-Cambrian super-giant gas field, Sichuan Basin, SW China. Petroleum Exploration and Development, 2014,41(3):278-293. |
| [6] | ZHU G Y, WANG T S, XIE Z Y , et al. Giant gas discovery in the precambrian deeply buried reservoirs in the Sichuan Basin, China: Implications for gas exploration in old cratonic basins. Precambrian Research, 2015,262:45-66. |
| [7] | DU Jinhu, ZOU Caineng, XU Chunchun , et al. Theoretical and technical innovations in strategic discovery of huge gas fields in Longwangmiao Formation of central Sichuan paleo-uplift, Sichuan Basin. Petroleum Exploration and Development, 2014,41(3):268-277. |
| [8] | ZHU G Y, GU L J, SU J , et al. Sedimentary association of alternated mudstones and tight sandstones in China’s oil and gas bearing basins and its natural gas accumulation. Journal of Asian Earth Sciences, 2012,50:88-104. |
| [9] | JIA Chengzao, GU Jiayu, ZHANG Guangya . Geological conditions of large gas field formation. Chinese Science Bulletin, 2002,47(S1):49-55. |
| [10] | WANG Zhaoming . Formation mechanism and enrichment regularities of Kelasu subsalt deep large gas field in Kuqa Depression, Tarim Basin. Natural Gas Geoscience, 2014,25(2):1-14. |
| [11] | QI Jiafu, LEI Ganglin, LI Minggang , et al. Analysis of structure model and formation mechanism of Kelasu structure zone, Kuqa Depression. Geotectonica et Metallogenia, 2009,33(1):49-56. |
| [12] | WANG Zhaoming, WANG Tingdong, XIAO Zhongyao , et al. Gas migration and accumulation of Kela-2 gas field. Chinese Science Bulletin, 2002,47(S1):103-108. |
| [13] | DAI Jinxing, WEI Yanzhao, ZHAO Jingzhou . Important role of the formation of gas accumulations in the late stage in the formation of large gas fields. Geology in China, 2003,30(1):10-19. |
| [14] | LIANG D G, ZHANG S C, CHEN J P , et al. Organic geochemistry of oil and gas in the Kuqa Depression, Tarim Basin, NW China. Organic Geochemistry, 2003,34:873-888. |
| [15] | ZHANG S C, ZHANG B, ZHU G Y , et al. Geochemical evidence for coal-derived hydrocarbons and their charge history in the Dabei gas field, Kuqa thrust belt, Tarim Basin, NW China. Marine and Petroleum Geology, 2011,28(7):1364-1375. |
| [16] | CHEN L, ZHU G Y, ZHANG B , et al. Control factors and diversities of phase state of oil and gas pools in the Kuqa petroleum system. Acta Geologica Sinica, 2012,86(2):484-496. |
| [17] | ZHANG Shuichang, ZHU Guangyou . Natural gas origins of large and medium-scale gas fields in China sedimentary basins. SCIENCE CHINA Earth Sciences, 2008,51(S1):1-13. |
| [18] | ZHU Guangyou, ZHANG Shuichang . Hydrocarbon accumulation conditions and exploration potential of deep reservoirs in China. Acta Petrolei Sinica, 2009,30(6):793-802. |
| [19] | ZHU G Y, WANG H T, WENG N , et al. Geochemistry, origin and accumulation of continental condensate in the ultra-deep- buried Cretaceous sandstone reservoir, Kuqa Depression, Tarim Basin, China. Marine and Petroleum Geology, 2015,65:103-113. |
| [20] | ZHU G Y, WANG Z J, DAI J X , et al. Natural gas constituent and carbon isotopic composition in petroliferous basins, China. Journal of Asian Earth Sciences, 2014,80(2):1-17. |
| [21] | CUI J, ZHU G Y, ZHANG S C , et al. The origin and distribution of natural gas in frontal uplift area of Kuqa Depression, Tarim Basin. Chinese Journal of Geochemistry, 2010,29(3):313-318. |
| [22] | DAHL J E, MOLDOWAN J M, PETERS K E , et al. Diamondoid hydrocarbons as indicators of natural oil cracking. Nature, 1999,399(6731):54-57. |
| [23] | DAHL J E, LIU S, CARLSON R . Isolation and structure of higher diamondoids, nanometer-sized diamond molecules. Science, 2003,299(5603):96-99. |
| [24] | WEI Z B, MOLDOWAN J M, FAGO F , et al. Origins of thiadiamondoids and diamondoidthiols in petroleum. Energy and Fuels, 2007,21(6):3431-3436. |
| [25] | CHEN J H, FU J M, SHENG G Y , et al. Diamondoid hydrocarbon ratios: Novel maturity indices for highly mature crude oils. Organic Geochemistry, 1996,25(3):179-190. |
| [26] | WEI Z B, MANKIEWICZ P, WALTERS C , et al. Natural occurrence of higher thiadiamondoids and diamondoidthiols in a deep petroleum reservoir in the Mobile Bay gas field. Organic Geochemistry, 2012,42(2):121-133. |
| [27] | WEI Z B, WALTERS C C, MICHAEL M J , et al. Thiadiamondoids as proxies for the extent of thermochemical sulfate reduction. Organic Geochemistry, 2012,44(3):53-70. |
| [28] | JIANG Naihuang, ZHU Guangyou, ZHANG Shuichang , et al. Detection of 2-Thiaadamantanes in the oil from Well TZ-83 in Tarim Basin and its geological implication. Chinese Science Bulletin, 2007,53(3):396-401. |
| [29] | ZHU G Y, ZHANG S C, HUANG H P , et al. Gas genetic type and origin of hydrogen sulfide in the Zhongba gas field of the western Sichuan Basin, China. Applied Geochemistry, 2011,26(7):1261-1273. |
| [30] | ZHU G Y, WANG H T, WENG N . TSR-altered oil with high-abundance thiaadamantanes of a deep-buried Cambrian gas condensate reservoir in Tarim Basin. Marine and Petroleum Geology, 2016,63:1-12. |
| [31] | ZHU G Y, HUANG H P, WANG H T . Geochemical Significance of Discovery in Cambrian Reservoirs at Well ZS1 of the Tarim Basin, Northwest China. Energy & Fuels, 2015,29(3):1332-1344. |
| [32] | ZHU G Y, WENG N, WANG H T , et al. Origin of diamondoid and sulfur compounds in the Tazhong Ordovician condensate, Tarim Basin, China: Implications for hydrocarbon exploration in deep-buried strata. Marine and Petroleum Geology, 2015,62:14-27. |
| [33] | ZHU G Y, ZHANG Y, ZHANG Z Y , et al. High abundance of alkylated diamondoids, thiadiamondoids and thioaromatics in recently discovered sulfur-rich LS2 condensate in the Tarim Basin. Organic Geochemistry, 2018,123:136-143. |
| [34] | ZHU G Y, ZHANG Y, WANG M , et al. Discovery of high- abundance diamondoids and thiadiamondoids and severe TSR alteration of Well ZS1C condensate, Tarim Basin, China. Energy & Fuels, 2018,32:7383-7392. |
| [35] | BAO Jianping, WANG Liqun, ZHU Cuishan , et al. Origin of the condensates from Kaitemilike Oilfield in the western Qaidam Basin: Diamondoid hydrocarbons. Natural Gas Geosciences, 2016,27(2):330-340. |
| [36] | BAO Jianping, ZHU Cuishan, SHEN Xu . Study on diamondoids and genetic mechanism of condensates from the Kela 2 structure in the KuqaDepression. Natural Gas Geosciences, 2018,29(9):1217-1230. |
| [37] | MA Anlai . New advancement in applicantion of diamondoids on organic geochemistry. Natural Gas Geosciences, 2016,27(5):851-860. |
| [38] | CHEN J H, FU J M, SHENG G Y , et al. Diamondoid hydrocarbon ratios: Novel maturity indices for highly mature crude oil. Organic Geochemistry, 1996,25(3):179-190. |
| [39] | CHEN Junhong, FU Jiamo, SHENG Guoying , et al. The structure characterization and geochemical signification of diamondoidhydrocarbon. Chinese Science Bulletin, 1996,41(6):524-527. |
| [40] | DAI Jinxing, SONG Yan, GUAN Deshi , et al. Indicators for identifying coal-derived gas. Beijing: Petroleum Industry Press, 1987: 156-170. |
| [41] | ZHU Guangyou, YANG Haijun, ZHANG Bin , et al. The geological feature and origin of Dina 2 large gas field in Kuqa Depression, Tarim Basin. Acta Petrologica Sinica, 2012,28(8):2479-2492. |
| [42] | LI Jian, XIE Zengye, LI Zhisheng , et al. A gas source study for Kuqa Depression of Tarim Basin. Petroleum Exploration and Development, 2001,28(5):29-32. |
| [43] | ZHAO Mengjun, LU Shuangfang, LI Jian . The geochemical features of natural gas in Kuqa Depression and the discussion on the gas source. Petroleum Exploration and Development, 2002,29(6):4-7. |
| [44] | QIN Shengfei, PAN Wenqing, HAN Jianfa , et al. Inhomogeneity of oil and gas distribution and its controlling factors in Kuqa Depression, Tarim Basin. Petroleum Exploration and Development, 2005,32(2):19-22. |
| [45] | FU Xiaofei, JIA Ru, WANG Haixue , et al. Quantitative evaluation of fault-caprock sealing capacity: A case from the Dabei-Kelasu structural belt in Kuqa Depression, Tarim Basin. Petroleum Exploration and Development, 2015,43(3):300-309. |
| [46] | LIANG Digang, CHEN Jianping, ZHANG Baomin , et al. Formation of continental oil and gas in Kuqa Depression, Tarim Basin. Beijing: Petroleum Industry Press, 2004. |
| [47] | BAO Jianping, ZHU Cuishan, ZHANG Qiucha , et al. Geochemical characteristics of natural gas from different structural units of the Kuqa Depression in the Tarim Basin. Oil & Gas Geology, 2007,28(5):664-668. |
| [48] | BAO Jianping, ZHU Cuishan, ZHANG Qiucha , et al. Geochemical characteristics of crude oil from frontal uplift in Kuqa Depression. Journal of Oil and Gas Technology, 2007,29(4):40-44. |
| [49] | LIU Wenhui, XU Yongchang . A two-stage model of carbon isotopic fractionation in coal-gas. Geochemistry, 1999,28(4):359-366. |
| [50] | ZHANG Ronghu, ZHANG Huiliang, SHOU Jianfeng , et al. Geological analysis on reservoir mechanism of the Lower Cretaceous Bashijiqike Formation in Dabei area of the Kuqa Depression. Chinese Journal of Geology, 2008,43(3):507-518. |
| [51] | ZHU Guangyou, ZHANG Shuichang, CHEN Ling , et al. Coupling relationship between natural gas charging and deep sandstone reservoir formation: A case from the Kuqa Depression, Tarim Basin. Petroleum Exploration and Development, 2009,36(3):347-357. |
| [52] | ZHOU Xingxi, LI Shaoji, CHEN Yicai , et al. Formation of condensate gas pools in Tarim Basin. Petroleum Exploration and Development, 1996,23(6):7-11. |
| [53] | ZHOU Xingxi . Phase genesis of condensate gas in Tarim Basin. Natural Gas Industry, 1996,16(2):5-8. |
/
| 〈 |
|
〉 |