Coupled accumulation characteristics of Carboniferous-Permian coal measure gases in the Northern Ordos Basin, China

Original Paper
  • 41 Downloads

Abstract

The northern Ordos Basin provides a favorable geological environment for the accumulation and development of coal measure gases (CMG). The hydrocarbon generation potential and reservoir systems of the coal measures have been studied based on data from experimental tests and production and exploration wells, respectively. Further, the coupled accumulation characteristics were determined. The results show that the source rocks are characterized by favorable hydrocarbon generation potential, high thermal evolution (Ro% = 1.3–2.3%), and mainly type III kerogen. Coals, typically aggregated organic matter, with a huge hydrocarbon generation potential (avg. 89.11 mg/g) and total organic content (TOC) (avg. 65.52%), are predominantly involved in gaseous hydrocarbon generation. Shales with good TOC contents (avg. 2.36%) and large cumulative thicknesses have an important role in gaseous hydrocarbon generation. Coal seams, shale layers, and sandstone layers occur as variably interbedded deposits, which form a favorable environment for CMG coupled accumulation. The porosity and permeability are ranked as follows: sandstone > coal > shale, with significant stress sensitivity and anisotropy. Two continuous gas generation peaks occurred in the Late Jurassic and Late Cretaceous, with an abundant amount of coal-derived and thermogenic gas generation, respectively. Potential gas-bearing sandstone layers can be formed by gas migration via short distances from nearby coal seams and shale layers. Coupled accumulation of CMG occurred in three stages: (1) stacked and interbedded reservoirs formation stage; (2) gas generating and charging stage; and (3) coupled accumulation adjustment stage. Coalbed methane (CBM)–tight sandstone gas (TSG) assemblage is a favorable target for CMG accumulation and development.

Keywords

Coal measure gases Hydrocarbon generation potential Reservoir systems Coupled accumulation Coupled accumulation assemblages 

Notes

Acknowledgments

This work was jointly sponsored by the Fundamental Research Funds for the Central Universities (No. 2017CXNL03), the National Natural Science Foundation of China (No. 41402124), and the National Science and Technology Major Project (No. 2017ZX05035004-002). The authors also sincerely appreciate the editors and the reviewers for helping to improve the manuscript.

References

  1. Ayers WB (2002) Coalbed gas systems, resources, and production and a review of contrasting cases from the San Juan and Powder River basins. AAPG Bull 86(11):1853–1890Google Scholar
  2. Bian C, Zhao WZ, Wang HJ, Chen ZY, Wang ZC, Liu GD, Zhao CY, Wang YP, Xu ZH, Li YZ, Jiang L (2015) Contribution of moderate overall coal-bearing basin uplift to tight sand gas accumulation: case study of the Xujiahe formation in the Sichuan Basin and the upper Paleozoic in the Ordos Basin, China. Petrol Sci 12(2):218–231CrossRefGoogle Scholar
  3. Cao DY, Liu K, Liu JC, Qin GH (2016) Combination characteristics of unconventional gas in coal measure in the west margin of Ordos Basin. J China Coal Soc 41(2):277–285Google Scholar
  4. Chen J, Jia H, Li Y, An C, Li W, Liu S (2016) Origin and source of natural gas in the upper Paleozoic of the Yimeng uplift, Ordos Basin. Oil Gas Geol 37(2):205–209Google Scholar
  5. Ding W, Zhu D, Cai J, Gong M, Chen F (2013) Analysis of the developmental characteristics and major regulating factors of fractures in marine–continental transitional shale-gas reservoirs: a case study of the carboniferous–Permian strata in the southeastern Ordos Basin, Central China. Mar Pet Geol 45:121–133CrossRefGoogle Scholar
  6. Guo X, Zou G, Wang Y, Wang Y, Gao T (2017) Investigation of the temperature effect on rock permeability sensitivity. J Pet Sci Eng 156:616–622CrossRefGoogle Scholar
  7. He J, Zhang X, Ma L, Wu H, Ashraf M (2016) Geological characteristics of unconventional gas in Coal Measure of upper Paleozoic coal measures in Ordos Basin, China. Earth Sci Res J 20(1):1–5CrossRefGoogle Scholar
  8. Jia J, Cao L, Sang S, Yi T, Zhou X (2016) A case study on the effective stimulation techniques practiced in the superposed gas reservoirs of coal-bearing series with multiple thin coal seams in Guizhou, China. J Pet Sci Eng 146:489–504CrossRefGoogle Scholar
  9. Law BE (2002) Basin-centered gas systems. AAPG Bull 86(11):1891–1919Google Scholar
  10. Law BE, Curtis JB (2002) Introduction to unconventional petroleum systems. AAPG Bull 86(11):1851–1852Google Scholar
  11. Leshchyshyn TT, Rieb BA, Thomson JT (2005) The production success of proppant stimulation on Horseshoe Canyon coal bed methane and sandstone commingled wells. Canadian International Petroleum Conference, 7–9 June, Calgary, Alberta, CanadaGoogle Scholar
  12. Li Y, Tang DH, Wu P, Niu X, Wang K, Qiao P, Wang ZS (2016) Continuous unconventional natural gas accumulations of carboniferous-Permian coal-bearing strata in the Linxing area, northeastern Ordos basin, China. J Nat Gas Sci Eng 36:314–327CrossRefGoogle Scholar
  13. Lou R, Dong Q, Nie H (2017) Exploration prospects of shale gas resources in the upper Permian Linxi formation in the Suolun-Linxi area, NE China. Energy Fuel 31(2):1100–1107CrossRefGoogle Scholar
  14. Mercer JC, Ammer JR, Frohne KH (1987) Case study of gas migration in the Wasatch and Mesaverde formations of the Piceance Basin Colorado. SPE Reserv Eng 2(4):677–682CrossRefGoogle Scholar
  15. Mi J, Zhang S, Hu G, He K (2010) Geochemistry of coal-measure source rocks and natural gases in deep formations in Songliao Basin, NE China. Int J Coal Geol 84:276–285CrossRefGoogle Scholar
  16. Monaghan AA (2017) Unconventional energy resources in a crowded subsurface: reducing uncertainty and developing a separation zone concept for resource estimation and deep 3D subsurface planning using legacy mining data. Sci Total Environ 601-602:45–56CrossRefGoogle Scholar
  17. Montgomery SL, Tabet DE, Barker CE (2001) Upper cretaceous Ferron sandstone: major coalbed methane play in Central Utah. AAPG Bull 85(2):199–219Google Scholar
  18. Okolo G, Everson R, Neomagus H, Roberts M, Sakurovs R (2015) Comparing the porosity and surface areas of coal as measured by gas adsorption, mercury intrusion and SAXS techniques. Fuel 141:293–304CrossRefGoogle Scholar
  19. Peterson R (1984) Geological and production characteristics of the nonmarine part of the Mesaverde group, Rulison field area, Piceance Basin, Colorado. SPE paper 12835, symposium on unconventional gas recovery, Soc petrol Eng, Pittsburgh, Pennsylvania, USA  https://doi.org/10.2118/12835-MS.
  20. Qin Y, Shen J (2016) On the fundamental issues of deep coalbed methane geology. Acta Petrol Sin 37(1):125–136Google Scholar
  21. Qin L, Zhai C, Liu S, Xu J, Yu G, Sun Y (2017) Changes in the petrophysical properties of coal subjected to liquid nitrogen freeze-thaw–a nuclear magnetic resonance investigation. Fuel 194:102–114CrossRefGoogle Scholar
  22. Sun ZM, Wang YL, Wei ZF, Zhang MF, Wang G, Wang ZX, Zhuo SG, Xu L (2017) Shale gas content and geochemical characteristics of marine-continental transitional shale: a case from the Shanxi formation of Ordos Basin. J China Univ Min Technol 46(4):859–868Google Scholar
  23. Towler B, Firouzi M, Underschultz J, Rifkin W, Garnett A (2016) An overview of the coal seam gas developments in Queensland. J Nat Gas Sci Eng 31:249–271CrossRefGoogle Scholar
  24. Tyler R, Kaiser WR, Scott AR, Hamilton DS, Ambrose WA (1994) Geologic and hydrologic assessment of natural gas from coal seams in the Mesaverde group and fort union formation, great Green River basin, Wyoming and Colorado. Topical report for the gas research institute, GRI-93/02320, Bureau of Economic Geology, University of Texas at Austin, Texas, USAGoogle Scholar
  25. Wang Y, Zhu Y, Chen S, Li W (2014) Characteristics of the nanoscale pore structure in northwestern Hunan shale gas reservoirs using field emission scanning Electron microscopy, high-pressure mercury intrusion, and gas adsorption. Energy Fuel 28(2):945–955CrossRefGoogle Scholar
  26. Wang Y, Zhu Y, Wang H, Feng G (2015) Nanoscale pore morphology and distribution of lacustrine shale reservoirs: examples from the upper Triassic Yanchang formation, Ordos Basin. J Energy Chem 24(4):512–519CrossRefGoogle Scholar
  27. Wang DD, Shao LY, Li ZX, Li MP, Lv DW, Liu HY (2016) Hydrocarbon generation characteristics, reserving performance and preservation conditions of continental coal measure shale gas: a case study of mid-Jurassic shale gas in the Yan’an formation, Ordos Basin. J Pet Sci Eng 145:609–628CrossRefGoogle Scholar
  28. Wu X, Tao X, Hu G (2014) Geochemical characteristics and source of natural gases from southwest depression of the Tarim Basin, NW China. Org Geochem 74:106–115CrossRefGoogle Scholar
  29. Wu S, Tang D, Li S, Yu H, Hu X, Zhu X (2017) Effects of geological pressure and temperature on permeability behaviors of middle-low volatile bituminous coals in eastern Ordos Basin, China. J Pet Sci Eng 153:372–384CrossRefGoogle Scholar
  30. Xu H, Cao DY, Li Y, Liu JC, Niu XL, Zhang Y, Qin GH (2016) Geochemical and preliminary reservoir characteristics of the carboniferous–Permian coal-bearing strata in the Junger area, northeastern Ordos Basin, China: source implications for unconventional gas. Energy Fuel 30(9):6947–6957CrossRefGoogle Scholar
  31. Zhang L, Bai G, Zhao K, Sun C (2006) Restudy of acid-extractable hydrocarbon data from surface geochemical survey in the Yimeng uplift of the Ordos Basin, China: improvement of geochemical prospecting for hydrocarbons. Mar Pet Geol 23(5):529–542CrossRefGoogle Scholar
  32. Zhao H, Zhang M, Wang Z (2009) Oil and gas potential assessment for coal measure source rocks on absolute concentration of n-alkanes and aromatic hydrocarbons. Sci China Ser D 52:51–58CrossRefGoogle Scholar

Copyright information

© Saudi Society for Geosciences 2018

Authors and Affiliations

  1. 1.Coalbed Methane Resources and Reservoir Formation Process Key Laboratory of Ministry of EducationChina University of Mining and TechnologyXuzhouChina
  2. 2.School of Resources and GeoscienceChina University of Mining and TechnologyXuzhouChina
  3. 3.Coal Geological Bureau of the Inner Mongolia Autonomous RegionHohhotChina

Personalised recommendations