Отправлено: 08.02.09 10:09. Заголовок: Carbonate cementation-dissolution in deep-seated sandstones near the overpressure top

Carbonate cementation-dissolution in deep-seated sandstones near the overpressure top in central Junggar Basin, Xinjiang, NW China
Chinese Journal of Geochemistry
Science Press, co-published with Springer-Verlag GmbH
ISSN 1000-9426
Volume 28, Number 1 /2009
DOI 10.1007/s11631-009-0086-x
pp 86-96
Carbonate cementation-dissolution in deep-seated sandstones near the overpressure top in central Junggar Basin, Xinjiang, NW China
Zhi Yang1, 5, Sheng He1, 2 , Furong Wang1, 5, Zhiliang He3, 5, Hengzhi Wu4, 5 and Xianlong Meng3, 5

(1) Faculty of Earth Resources, China University of Geosciences, Wuhan, 430074, China
(2) Key Laboratory of Tectonics and Petroleum Resources (China University of Geosciences Wuhan), Ministry of Education, Wuhan, 430074, China
(3) Research Institute of Petroleum Exploration and Production, SINOPEC, Beijing, 100083, China
(4) Southwest Branch Company, SINOPEC, Chengdu, 610051, China
(5) West Branch, Research Institute of Petroleum Exploration and Production, SINOPEC, Urumqi, 830011, China

Received: 12 February 2008 Accepted: 24 April 2008 Published online: 11 January 2009

Abstract Fluid/rock interaction occurs frequently in the sandstones near the overpressure top in central Junggar Basin, and carbonate cementation-dissolution is related closely to the formation of secondary pores in the reservoir sandstones. From petrological, hydrochemical and fluid-inclusion studies of the deep-seated sandstones near the overpressure top in central Junggar Basin and the carbon and oxygen isotopic characteristics of carbonate cements in those sandstones, the following conclusions can be drawn: (1) Carbonates are the major cements. Two-stage cementation was commonly developed, with late-stage ferroan carbonate cementation being dominant; several secondary porosity zones were developed vertically in the sandstones near the overpressure top, and there is a mutually compensatory relationship between the carbonate contents and the mean porosity; (2) the alkalescent formation-water chemical environments are in favor of carbonate precipitation; (3) there were two phases of thermal fluid activity which are related to the late-stage carbonate cementation-dissolution; (4) with the overpressure top as the boundary, carbonate cements in the sandstones have slightly negative ¦Д13C and ¦Д18O values, showing such a variation trend that the ¦Д13C and ¦Д18O values near the coal-bearing Jurassic strata are lighter, those in the overpressure top are heavier, and those at the upper part of the overpressure top are lighter, which is considered to be the result of kinetic isotope fractionation driven by episodically overpressured fluid flow; (5) carbonate cementation is closely associated with the decarboxylation of organic acids, and secondary porosity zones resultant from dissolution by organic acids and CO2 derived from Jurassic coal-bearing strata, are the most important reservoir space of hydrocarbon, Studies of the mechanisms of carbonate cementation-dissolution and formation of secondary pores in the deep-seated sandstones near the overpressure top are of great significance both in theory and in practice in further investigating the rules of overpressured fluid flow (especially oil/gas migration) and predicting the reservoir space of hydrocarbon.
Key words central Junggar Basin - deep-seated sandstone - carbonate cementation-dissolution - secondary porosity - overpressured fluid flow - carbon and oxygen isotopic characteristics - coal-bearing stratum


--------------------------------------------------------------------------------


Sheng He
Email: shenghe@cug.edu.cn



References
Bj¦Хrlykke K. (1994) Fluid-flow processes and diagenesis in sedimentary basins. In Geofluids: Origin, Migration and Evolution of Fluids in Sedimentary Basins (ed. Parnell L.) [C]. Geological Society Special Publication. 78, 127ЁC140.

Brown D.M., McAlpine K.D., and Yole R.W. (1989) Sedimentology and sandstone diagenesis of Hibernia Formation oilfield, Grand Banks of Newfoundland [J]. AAPG Bulletin. 73, 557ЁC575.

Cao Jian, Hu Wenxuan, Yao Suping et al. (2007) Mn content of reservoir calcite cement: A novel inorganic geotracer of secondary petroleum migration in the tectonically complex Junggar Basin (NW China) [J]. Science in China (Series DЎЄEarth Sciences). 50, 1796ЁC1809 (in Chinese).


Cheng Keming, Su Aiguo, Zhao Changyi et al. (1997) Coal-generated in Tuha Basin [J]. Science in China (Series D). 40, 439ЁC442 (in Chinese).


Curtis C.D. (1978) Possible links between sandstone diagenesis and depth-related geochemical reactions occurring in enclosing mudstones [J]. Journal of the Geological Society of London. 135, 107ЁC118.


Geoffrey Thyne (2001) A model for diagenetic mass transfer between adjacent sandstone and shale [J]. Marine and Petroleum Geology. 18, 743ЁC755.


Hao Fang (2005) Kinetics of Hydrocarbon Generation and Mechanism of Petroleum Accumulation in Overpressured Basins [M]. Science Press, Beijing (in Chinese).

Hunt J.M. (1990) Generation and migration of petroleum from abnormally pressured fluid compartments [J]. AAPG Bulletin. 74, 1ЁC12.

Irwin H., Curtis C., and Coleman M (1977) Isotopic evidence for source of diagenetic carbonates formed during burial of organic-rich sediments [J]. Nature. 269, 209ЁC213.


Jansa L.F. and Noguera Urrea V.H. (1990) Geology and diagenetic history of overpressured sandstone reservoirs, venture gas field, offshore Nova Scotia, Canada [J]. AAPG Bulletin. 74, 1640ЁC1658.

Jonk R., Hurst A., Duranti D. et al. (2005) Origin and timing of sand injection, petroleum migration, and diagenesis in Tertiary reservoirs, south Viking Graben, North Sea [J]. AAPG Bulletin. 89, 329ЁC357.


Li Mingcheng (1995) Hot fluid activity in crust and hydrocarbon migration [J]. Earth Science Frontiers. 2, 155ЁC162 (in Chinese with English abstract).

Li Pingping, Zou Huayao, and Hao Fang (2006) Formation mechanism and effect on petroleum accumulation of the weathering crust, top of Jurassic, in the hinterland of Junggar Basin [J]. Acta Sedimentologica Sinica. 24, 889ЁC896 (in Chinese with English abstract).

Lindquist S.J. (1977) Secondary porosity development and subsequent reduction, overpressured Frio Formation sandstone (Oligocene), south Texas [J]. Gulf Coast Association of Geological Societies Transactions. 27, 99ЁC107.

Liu Guifeng, Wang Li, Li Chuntao et al. (2007) Relationship between chemical characteristic of formation water and hydrocarbon accumulation in hinterland of Junggar Basin [J]. Petroleum Geology & Experiment. 28, 54ЁC56 (in Chinese with English abstract).

Lynch F.L. (1996) Mineral/water interaction, fluid flow, and Frio sandstone diagenesis: Evidence from the rocks [J]. AAPG Bulletin. 80, 486ЁC504.

McBride E.F. (1977) Secondary porosity-importance in sandstone reservoirs in Texas (short note) [J]. Gulf Coast Association of Geological Societies, Transactions. 27, 121ЁC122.

Nie Fengjun, Jiang Meizhu, Li Sitian et al. (2005) The responses of sandstone to hot fluid flow and their identified markers-A case study from the western part of the Pearl River Mouth Basin [J]. Earth Science Frontiers. 12, 581ЁC591 (in Chinese with English abstract).

Ni Shijun, Qing Hairuo, Tang Jianwu et al. (2002) Kinetic modeling of diagenesis of Eogene lacustrine sandstone reservoirs in the Jianghan Basin, Southeastern China [J]. Chinese Journal of Geochemistry. 21, 298ЁC307.


Roberts S.J. and Nunn J.A. (1995) Episodic fluid expulsion from geopressured sediments [J]. Marine and Petroleum Geology. 12, 195ЁC204.


Shou Jianfeng, Zhang Huiliang, Si Chunsong et al. (2005) Dynamics of Sandstone Diagenesis [M]. Petroleum Industry Press, Beijing (in Chinese).

Surdam R.C., Crossey L.J., Hagen E.S. et al. (1989) Organic-inorganic interactions and sandstone diagenesis [J]. AAPG Bulletin. 73, 1ЁC23.

Tan Jianxiong, Zeng Yunfu, Chen Hongde et al. (1999) Significance of carbon isotopes in carbonate sequence stratigraphy-As exemplified by the Permian System in southwest China [J]. Chinese Journal of Geochemistry. 18, 69ЁC79.


Taylor T.R. (1990) The influence of calcite dissolution on reservoir porosity in Miocene sandstones, Picaroon field, offshore Texas Gulf Coast [J]. Journal of Sedimentary Petrology. 60, 322ЁC334.

Wang Darui (2000) Oil-Gas Stable Isotopic Geochemistry [M]. Petroleum Industry Press, Beijing (in Chinese).

Wang Yong, Zhong Jianhua, Chen Hao et al. (2006) Vertical distribution and genesis of the secondary porosity in deep formation of Paleogene in the Dongpu Depression [J]. Petroleum Exploration and Development. 33, 576ЁC580 (in Chinese with English abstract).

Wang Zhenliang, Zhu Yushuang, Chen Heli et al. (2000) Physical and chemical prosperities of Jurassic fluid in the hinterland of Junggar Basin and its hydrodynamic significance [J]. Geochimica. 29, 542ЁC548 (in Chinese with English abstract).

Wang Zhizhang, Wu Shenghe, Xiong Qihua et al. (2003) Characteristics of Seepage Flow Field in Oil-gas Fields [M]. Petroleum Industry Press, Beijing (in Chinese).

Weedman S.D., Brantley S.L., and Albrecht W. (1992) Secondary compaction after secondary porosity: Can it form a pressure seal? [J]. Geology. 20, 303ЁC306.


Wilkinson M., Haszeldine R.S., and Fallick A.E. (2006) Hydrocarbon filling and leakage history of a deep geopressured sandstone, Fulmar Formation, United Kingdom North Sea [J]. AAPG Bulletin. 90, 1945ЁC1961.


Wu Hengzhi, Meng Xianlong, and Yang Jiangfeng (2006) Formation conditions and prospecting technologies for subtle reservoirs in the Che-Mo palaeohigh of central Junggar Basin [J]. Oil & Gas Geology. 27, 779ЁC803 (in Chinese with English abstract).

Wu Kongyou, Zha Ming, and Zhong Jianhua (2006) Distribution and evolution of overpressure systems in the Junggar Basin [J]. Chinese Journal of Geology. 41, 636ЁC647 (in Chinese with English abstract).

Xie Xiaomin, Cao Jian, Hu Wenxuan et al. (2007) Origin and application of GOI data of oil inclusions in structurally complex basins: A case study in the Mosuowan Area of the Junggar Basin (NW China) [J]. Acta Geology Sinica. 81, 834ЁC842 (in Chinese with English abstract).

Xie Xinong, Li Sitian, and Liu Xiaofeng (2006) Basin Fluid Dynamics in Abnormally Pressured Environments [M]. China University of Geosciences Press, Wuhan (in Chinese).

Xie Yinfu, Li Hongqi, and Sun Zhongchun (2006) Discovery of a weathering crust between Jurassic and Cretaceous and its stratigraphic significance in the Shinan area of the Junggar Basin [J]. Geological Review. 52, 137ЁC144 (in Chinese with English abstract).

Yang Zhi, He Sheng, Wu Hengzhi et al. (2007) Study into the distribution of overpressure stratum in the hinterland of Jungar Basin [J]. Geophysical Prospecting for Petroleum. 46, 137ЁC142 (in Chinese with English abstract).

Yin Wei, Zheng Herong, Meng Xianlong et al. (2005) Geochemical behaviors of crude oils in central Junggar Basin [J]. Oil & Gas Geology. 26, 461ЁC466 (in Chinese with English abstract).

Yu Bingsong and Lai Xingyun (2006a) Carbonic acid system of groundwater and the solubility of calcite during diagenesis [J]. Acta Sedimentologica Sinica. 24, 627ЁC635 (in Chinese with English abstract).

Yu Bingsong and Lai Xingyun (2006b) Dissolution of calcite cement and its contribution to the secondary pores of reservoir in the Kela 2 gas field in the Tarim Basin [J]. Mineral Petrol. 26, 74ЁC79 (in Chinese with English abstract).

Zha Ming, Zhang Weihai, and Qu Jjiangxiu (2000) The character and origin of overpressure and its explorational significance in Junggar Basin [J]. Petroleum Exploration and Development. 27, 31ЁC35 (in Chinese with English abstract).

Zhang Yijie (2002) The geochemical characteristics of water rock interaction products in Junggar Basin [J]. Xinjiang Petroleum Geology. 23, 482ЁC484 (in Chinese with English abstract).

Zhang Zhihuan, Hu Wenxuan, Zeng Jianhui et al. (2000) Study of fluid-rock interaction in Eogene Formation in Dongying Depression, Bohai Gulf Basin [J]. Acta Sedimentologica Sinica. 18, 560ЁC566 (in Chinese with English abstract).

Zheng Junmao and Ying Fengxiang (1997) Reservoir characteristics and diagenetic model of sandstone intercalated in coal-bearing strata (acid water medium) [J]. Acta Petrolei Sinica. 18, 19ЁC24 (in Chinese with English abstract).

Zhong Dakang, Zhu Xiaomin, Zhang Zhihuan et al. (2003) Origin of secondary porosity of Paleogene sandstone in the Dongying Depression [J]. Petroleum Exploration and Development. 30, 51ЁC53 (in Chinese).