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Formation mechanism of reservoir oolitic dolomite in Lower Triassic Feixianguan formation, northeastern Sichuan Basin, southwest China

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Abstract

A series of marine natural gas fields were recently discovered in oolitic dolomites of the Lower Triassic Feixianguan formation, northeastern Sichuan Basin, southwest China. The mechanism forming these reservoir dolomites is debatable, limiting the ability to characterize these reservoir successfully. Based on the investigation of the representative Dukouhe, Luojiazhai, and Puguang areas, this issue was addressed by examining the distribution, petrology, and geochemistry of the dolomites, the most comprehensive study to date was provided. Dolomitization occurred at a very early stage of diagenesis, as shown by the petrological features of the rock fabric. Vadose silt, which is composed primarily of dolomitic clasts, is found in the primary and secondary pores of the oolitic dolomite. This indicates that the overlying strata were subjected to dolomitization when the Feixianguan formation was located in the vadose zone. Therefore, it may be inferred that the dolomitization which occurred before the formation was exposed to meteoric conditions. The spatial distribution and geochemical characteristics of the dolomite indicate that dolomitization occurred as a result of seepage reflux. The degree of dolomitization decreases with increasing distance from the evaporative lagoon. Furthermore, the type and porosity of the dolomite vary in different zones of the upward-shoaling sequence, with the porosity gradually decreasing from the highest layer to the lowest layer. This reflects a close relationship between dolomitization and seawater evaporation during the formation of the dolomite. Geochemical analysis provided further evidence for the relationship between the dolomitization fluid and the coeval seawater. The 87Sr/86Sr and δ13C isotopes, as well as the abundances of trace elements, Fe and Mn, indicate that seawater concentrated by evaporation acted as the dolomitization fluid. These results also show that dolomitization most likely occurred in a semi-closed diagenetic environment. Therefore, the main mechanism of oolitic dolomite formation is seepage reflux, which occurred at an early stage of diagenesis.

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References

  1. RAN Long-hui, CHEN Geng-sheng, ZHANG Jian, YANG Yu. The study of Feixianguan oolitic beach reservoir distribution and analysis of exploration potential in the Northeast of Sichuan Basin [J]. China Petroleum Exploration, 2002, 7(1): 46–55.( in Chinese )

    Google Scholar 

  2. WANG Yi-gang, LIU Hua-yi, WEN Ying-chu, YANG Yu, ZHANG Jian. Distribution law, exploration method and prospectiveness prediction of the oolitic beach reservoirs in Feixianguan Formation in Northeast Sichuan Basin [J]. Natural Gas Industry, 2002, 22(Z1): 14–19. ( in Chinese )

    Google Scholar 

  3. CHEN Zong-qing. Discussion on gas exploration of Feixianguan Formation in the Lower Triassic of Sichuan Basin [J]. Acta Petrolei Sinica, 2007, 28(5): 12–26. ( in Chinese )

    Google Scholar 

  4. ZHENG Rong-cai, LUO Ping, WEN Qi-bing, XU Fa-bo, LI Yu, GENG Wei. Characteristics of sequence-based lithofacies and paleogeography, and prediction of oolitic shoal of the Feixianguan Formation in the Northeastern Sichuan [J]. Acta Sedimentologica Sinica, 2009, 27(1): 1–8. ( in Chinese )

    Article  MATH  Google Scholar 

  5. XIE Zeng-ye, TIAN Shi-cheng, SHAN Xiu-qin, Yang Wei, LI Jian. Features of gas accumulation and exploration foreground in oolitic reservoir of Feixianguan Formation in Sichuan Basin [J]. Petroleum Exploration and Development, 2005, 32(2): 31–34. ( in Chinese )

    Google Scholar 

  6. WEI Guo-qi, YANG Wei, ZHANG Lin, JIN Hui, WU Shi-xiang, SHEN Yu-hong. Dolomitization genetic model of Feixianguan group oolitic beach reservoir in Northeast Sichuan Basin [J]. Natural Gas Geoscience, 2005, 16(2): 162–166. ( in Chinese )

    Google Scholar 

  7. MA Yong-sheng, GUO Xue-sheng, GUO Tong-lou, HUANG Rui, CAI Xun-yu, LI Guo-xiong. The Puguang gas field: New giant discovery in the mature Sichuan Basin, southwest China [J]. AAPG Bulletin, 2007, 91(5): 627–643.

    Article  Google Scholar 

  8. SU Li-ping, LUO Ping, HU She-rong, LUO Zhong, LIU Liu-hong, FANG Xiao-rong. Diagenesis of Oolitic Bank of the Feixianguan formation of lower triassic in luojiazhai Gas Field, northeastern sichuan province [J]. Journal of Palaeogeography, 2004, 6(2): 182–190. ( in Chinese )

    Google Scholar 

  9. CHEN Geng-sheng, ZENG Wei, YANG Yu, YANG Tian-quan, WANG Xing-zhi. Discussion on dolomitization genesis of feixianguan formation in northeast Sichuan [J]. Natural Gas Industry, 2005, 25(4): 40–41. ( in Chinese )

    MATH  Google Scholar 

  10. PAN Li-yin, LIU Zhan-guo, LI Chang, SHOU Jian-feng, ZHANG Jian-yong, ZHANG Jie, SHEN An-jiang, ZHOU Jin-gao, ZHENG Xing-ping. Dolomitization and its relationship with reservoir development of the Lower Triassic Feixianguan formation in eastern Sichuan Basin [J]. Journal of Palaeogeography, 2012, 14(2): 176–186. ( in Chinese )

    Google Scholar 

  11. YANG Wei, HU Ming-yi, QIAN Yong. Analysis of dolomitization in Feixianguan Formation in Northern Sichuan Basin [J]. Journal of Daqing Normal University, 2011, 31(6): 78–81. ( in Chinese )

    Google Scholar 

  12. ZHU Guang-you, ZHANG Shui-chang, LIANG Yong-bo, DAI Jin-xing, LI Jian. Isotopic evidence of TSR origin for natural gas bearing high H2S contents within the Feixianguan formation of the northeastern Sichuan Basin, southwestern China [J]. Science in China Ser. D Earth Sciences, 2005, 24(2): 1960–1971.

    Article  Google Scholar 

  13. HUANG Si-jing, HUANG Yu, LAN Ye-fang, HUANG Ke-ke. A comparative study on strontium isotope composition of dolomites and their coeval seawater in the Late Permian-Early Triassic. NE Sichuan Basin [J]. Acta Petrologica Sinica, 2011, 27(12): 3831–3842. (in Chinese )

    Google Scholar 

  14. WANG Yi-gang, WEN Ying-chu, ZHANG Fan, YANG Yu, ZHANG Jing. Distribution law of the organic reefs in Changxing formation of upper permian in east Sichuan [J]. Natural Gas Industry, 1998, 18(6): 10–15. ( in Chinese )

    Google Scholar 

  15. YANG Yu, WEN Ying-chu. Control of Kaijiang-Liangping trough growing on T1f oolitie distribution in Northeast Sichuan Basin [J]. Natural Gas Industry, 2002, 22(z1): 30–32. (in Chinese )

    MATH  MathSciNet  Google Scholar 

  16. WANG Xing-zhi, Zhang Fan, Jiang Zhi-bin, Zhang Jin-you, Zeng De-ming. A study of Feixianguan reservoir in Northeast Sichuan Basin [J]. Earth Science Frontiers, 2008, 15(1): 117–122. (in Chinese )

    Google Scholar 

  17. CHEN Zhi-bin, CHEN Mei, WANG Long-zhang. Diagenesis of carbonate reservoir in the Lower Triassic Feixianguan formation of the NE Sichuan basin, China [J]. Natural Gas Geoscience, 2010, 21(5): 742–747. ( in Chinese )

    Google Scholar 

  18. WEI Guo-qi, CHEN Geng-sheng, YANG Wei, YANG Yu, HU Ming-yi, ZHANG Lin, WU Shi-xiang, JIN Hui, SHEN Jue-hong. Sedimentary system of platformal trough of Feixianguan Formation of Lower Triassic in Northern Sichuan Basin and its evolution [J]. Acta Sedimentologica Sinica, 2004, 22(2): 254–260. (in Chinese )

    Google Scholar 

  19. FENG Ren-wei, WANG Xing-zhi, ZHANG Fan, PANG Yan-jun, CHEN Geng-sheng, YANG Yu, YANG Tian-quan. Sedimentary facies of isolated carbonate platform of the first to third Members of the Lower Triassic Feixianguan formation in the Northeastern part of the Sichuan basin and other related aspects [J]. Geology in China, 2008, 35(1): 54–66. (in Chinese )

    Google Scholar 

  20. LUO Zhi-li. Uplift of longmen mountain orogenic belt and the formation and evolution of Sichuan Basin [M]. Chengdu: Chengdu University of Science and Technology Press, 1994: 20–39. (in Chinese)

    Google Scholar 

  21. DU Yuan-sheng, YIN Hong-fang, WANG Zhi-ping. The Late Caledonian-early Hercynian Basin’s framework and tectonic evolution of Qinling Orogenic Belt [J]. Earth Science-Journal of China University of Geosciences, 1997, 22(4): 401–405. (in Chinese)

    Google Scholar 

  22. LIU Jian-qiang, LUO Bing, TAN Xiu-cheng, JIANG Xing-fu, LI Zong-yin, QIAO Lin, XUE Jiu-huo, ZHAO Chang-cheng. Distribution of marginal-platform oolitic shoal in Feixianguan formation, Northeast Sichuan, China [J]. Earth Science-Journal of China University of Geosciences, 2012, 37(4): 1–11. (in Chinese)

    Google Scholar 

  23. TAN X C, LIU H, LI L, LUO B, LIU X G, MOU X H, NIE Y, XI W Y. Primary intergranular pores in oolitic shoal reservoir of Lower Triassic Feixianguan formation, Sichuan Basin, southwest China: Fundamental for reservoir formation and retention diagenesis [J]. Journal of Earth Science, 2011, 22(1): 101–114.

    Article  Google Scholar 

  24. TAN X C, ZHAO L Z, LUO B, JIANG X F, CAO J, LIU H, LI L, WU X B, NIE Y. Comparison of basic features and origins of oolitic shoal reservoirs between carbonate platform interior and platform margin locations in the lower Triassic Feixianguan formation of the Sichuan Basin, Southwest China [J]. Pet. Sci, 2012, 9(4): 417–428.

    Article  Google Scholar 

  25. HUANG Si-jing, ZHANG Xue-hua, LIU Li-hong, HUAN Jin-lai, HUANG Ke-ke. Progress of research on carbonate diagenesis [J]. Earth Science Frontiers, 2009, 16(5): 219–231. (in Chinese)

    Google Scholar 

  26. MA Yong-sheng, Guo Tong-lou, CAI Xun-yu. Petroleum geology of the northeastern Sichuan Basin and the characteristics of Puguang Gas Field, China [J]. Marine and Petroleum Geology, 2008, 25(4): 357–370.

    Article  Google Scholar 

  27. CHEN Hui, TIAN Jing-chun, ZHANG Xiang, YANG Yu, FU Guan. Dolomization genetic of the Lower Triassic Feixianguan Group oolitic beach in Northeast Sichuan Basin [J]. Natural Gas Industry, 2008, 28(1): 42–46. (in Chinese)

    Google Scholar 

  28. WANG Shui-yi, JIANG Xiao-qiong, GUAN Hong-lin, BAO Yun-jie. Diagenesis effects of Lower Triassic Feixianguan formation reservoir in Puguang gasfield, Northeast Sichuan [J]. Petrolrum Geology & Experiment, 2010, 32(4): 366–372. (in Chinese)

    Google Scholar 

  29. MONTANZE I P, OSLEGER D A, BANNER J L, MACK L E, MUSGROVE M M. Evolution of the Sr and C isotope composition of Cambrian oceans [J]. GSA Today, 2000, 10(5): 1–7.

    Google Scholar 

  30. FENG J L, CAO J, HU K, PENG X Q, CHEN Y, WANG Y F, WANG M. Dissolution and its impacts on reservoir formation in moderately to deeply buried strata of mixed siliciclastic-carbonate sediments, northwestern Qaidam Basin, northwest China [J]. Marine and Petroleum Geology, 2013, 39(1): 124–137.

    Article  Google Scholar 

  31. ZHU M Y, ZHANG J M, LI G X, YANG A H. Evolution of C isotopes in the Cambrian of China: Implications for Cambrian subdivision and Trilobite mass extinctions [J]. Geobios, 2004, 37(2): 287–301.

    Article  Google Scholar 

  32. LEI H Y, CAO C, OU W J, GONG C J, SHI C X. Carbon and oxygen isotope characteristics of foraminiferan from northern South China Sea sediments and their significance to late Quaternary hyrate decomposition [J]. Journal of Central South University, 2012, 19(6): 226–267.

    Article  Google Scholar 

  33. DERRY L A, KETO L S, JACOBSEN S B, KNOLL A H, SWETT K. Sr isotopic variations in Upper Proterozoic carbonates from Svalbard and East Greenland [J]. Geochim Cosmo Acta, 1989, 53(9): 2331–2339.

    Article  Google Scholar 

  34. KAUFMAN A J, KNOLL A H, AWRAMIK S M. Biostratigraphic and chemostratigraphic correlation of neoproterozoic sedimentary successions: Upper Tindir Group, Northwestern Canada, As a Test Case [J]. Geology, 1992, 20(2): 181–185.

    Article  Google Scholar 

  35. HUANG Si-jing, TONG Hong-peng, LIU Li-hong, HU Zuo-wei, ZHANG Xue-hua, HUAN Jin-lai, HUANG Ke-ke. Petrography, geochemistry and dolomitization mechanism of dolomite in Triassic, NE Sichuan, China [J]. Acta Petrologica Sinica, 2009, 25(10): 2363–2372. (in Chinese)

    Google Scholar 

  36. VAHRENKAMP V C, STEWART P K. New distribution coefficient for the incorporation of strontium into dolomite and its implications for the Formation of ancient dolomites [J]. Geology, 1990, 18(5): 387–391.

    Article  Google Scholar 

  37. AZMY K, VEIZER J, MISI A, OLIVEIRA T F, SANCHES A L, DARDENNE M A. Dolomitization and isotope stratigraphy of the Vazante Formation, Sao Francisco Basin, Brazil [J]. Precambrian Research, 2001, 112(3/4): 303–329.

    Article  Google Scholar 

  38. QIANG Zi-tong. Geology of carbonate reservoir [M]. Beijing: China University of Petroleum Press, 1988. (in Chinese)

    Google Scholar 

  39. JOHN D H. New Geochemical Support for Mixing-Zone Dolomitization at Golden Grove, Barbados [J]. Journal of Sedimentary Research, 2000, 70(5): 1160–1170.

    Article  Google Scholar 

  40. ZHANG Xue-feng, HE Yun-lan, MA Yong-sheng, LIU Bo, ZHAO Pei-rong, GAO Ji-xian, YANG Yun-kun. Controls of sedimentation on reservoir formation in Lower Triassic Feixianguan formation, Northeastern Sichuan Basin [J]. Earth Science Frontiers, 2011, 18(4): 224–235. (in Chinese)

    Google Scholar 

  41. GAO Mei-sheng, ZHENG Rong-cai, WEN Hua-guo, LI Lian-xin, LI Hong. Lithological characteristics of dolomite in the Lower Triassic Feixianguan Formation of the NE Sichuan Basin, China [J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2007, 34(3): 297–304. (in Chinese)

    Google Scholar 

  42. MOORE C H. Carbonate reservoirs: Porosity evolution and diagenesis in a sequence stratigraphic framework [M]. Developments in Sedimentology, 2001.

    Google Scholar 

  43. LUCZAJ J A. Evidence against the dorag (mixing-zone) model for dolomitization along the wisconsin arch-a case for hydrothermal diagenesis [J]. AAPG Bulletin, 2006, 90(11): 1719–1738.

    Article  Google Scholar 

  44. ADAMS J E, RHODES M L. Dolomitization by seepage refluxion [J]. AAPG Bulletin, 1960, 44(12): 1912–1920.

    Google Scholar 

  45. MOORE C H, CHOWDHURY A, CHAN L. Upper Jurassic platform dolomitization, Northwestern Gulf of Mexico: A Tale of Two Waters [C]// in V. Shukla, and P. A. Baker, eds., Sedimentology and Geochemistry of Dolostones, Tulsa, OK: SEPM Special Publication, 1988, 43: 175–190.

    Chapter  Google Scholar 

  46. LEARY D A, VOGT J N. Diagenesis of permian (guadalupian) San Andres formation, central basin platform, west Texas [J]. AAPG Bulletin, 1987, 71(5): 67–68.

    Google Scholar 

  47. WARREN J. Dolomite: Occurrence, evolution and economically important associations [J]. Earth Sci Rev, 2000, 52: 1–81.

    Article  MathSciNet  Google Scholar 

  48. LUO Ping, SU Li-ping, LUO Zhong, CUI Jing-gang, YAN Ji-hong. Application of laser micro-sampling technique to analysis of C and O isotopes of oolitic dolomites in Feixianguan formation, northeast Sichuan [J]. Geochimica, 2006, 35(3): 325–330. (in Chinese)

    Google Scholar 

  49. WANG Ze-cheng, ZHAO Wen-zhi, ZHANG Lin, WU Shi-xiang. Structural sequence and gas exploration of Sichuan Basin [M]. Beijing: Geological Publishing House, 2002. (in Chinese)

    Google Scholar 

  50. HUANG Yong, WEI Zhi-hong, DENG Jin-hua, LIU Ruo-bing, CHEN Zai-xue. Genesis and secondary pores of dolomite from Triassic Feixianguan formation in the Northeast of Sichuan Province [J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2011, 38(3): 263–270. (in Chinese)

    Google Scholar 

  51. VEIZER J, HOEFS, J. The nature of 18O/16O and 13C/12C secular trends in sedimentary carbonate rocks [J]. Geochimica Cosmochim Acta, 1976, 40(22): 1387–1395.

    Article  Google Scholar 

  52. KORTE C H, KOZUR W, VEIZER J. δ13C and δ18O values of Triassic brachiopods and carbonate rocks as proxies for coeval seawater and palaeotemperature [J]. Palaeogeogr Palaeoclimatol Palaeoecol, 2005, 226(3/4): 287–306.

    Article  Google Scholar 

  53. KEITH M I, WEBER J N. Carbon and oxygen isotopic composition of selected limestones and fossils [J]. Geochimica et Cosmochimica Acta, 1964, 28(10/11): 1787–1816.

    Article  Google Scholar 

  54. KORTE C, KOZUR H W, BRUCKSCHEN P, VEIZER J. Strontium isotope evolution of Late Permian and Triassic seawater [J]. Geochim Cosmochim Acta, 2003, 67(1): 47–62.

    Article  Google Scholar 

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Authors and Affiliations

  1. State Key Laboratory of Oil and Gas Geology and Exploration, Southwest Petroleum University, Chengdu, 610500, China

    Pei-yuan Chen  (陈培元) & Xiu-cheng Tan  (谭秀成)

  2. School of Geoscience and Technology, Southwest Petroleum University, Chengdu, 610500, China

    Pei-yuan Chen  (陈培元), Xiu-cheng Tan  (谭秀成), Hong Liu  (刘宏), Teng Ma  (马腾) & Yang Yu  (于洋)

  3. Research Institute of Petroleum Exploration and Development, Post-doctoral Workstation of PetroChina Southwest Oil and Gas Field Company, Chengdu, 610051, China

    Bing Luo  (罗冰)

  4. Department of Exploration Industry, PetroChina Southwest Oil and Gas Field Company, Chengdu, 610051, China

    Xing-fu Jiang  (姜兴福)

  5. Research Institute of Petroleum Exploration and Development, SINOPEC, Zhongyuan Oilfield Company, Puyang, 457001, China

    Xiu-ju Jin  (靳秀菊)

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  1. Pei-yuan Chen  (陈培元)
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Correspondence to Xiu-cheng Tan  (谭秀成).

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Foundation item: Project(2012CB214803) supported by the Major State Basic Research Development Program, China; Project(2011ZX5017-001-HZO2) supported by the National Science & Technology Special Project, China; Project(2011D-5006-0105) supported by the PetroChina Research Fund, China; Project(SZD0414) supported by the Key Subject Construction Project of Sichuan Province, China

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Chen, Py., Tan, Xc., Liu, H. et al. Formation mechanism of reservoir oolitic dolomite in Lower Triassic Feixianguan formation, northeastern Sichuan Basin, southwest China. J. Cent. South Univ. 21, 3263–3274 (2014). https://doi.org/10.1007/s11771-014-2299-3

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