DOI: 10.1306/07211413147
Scopus记录号: 2-s2.0-84929299563
论文题名: Geological and hydrological controls on water coproduced with coalbed methane in Liulin, eastern Ordos basin, China
作者: Li Y. ; Tang D. ; Xu H. ; Elsworth D. ; Meng Y.
刊名: AAPG Bulletin
ISSN: 0149-1493
EISSN: 1558-9223
出版年: 2015
发表日期: 2015
卷: 99, 期: 2 起始页码: 207
结束页码: 229
语种: 英语
Scopus关键词: Coal
; Coal bed methane
; Firedamp
; Geology
; Groundwater
; Hydrogeology
; Landforms
; Metamorphic rocks
; Methane
; Mineralogy
; Natural gas wells
; Sandstone
; Underground reservoirs
; Chemical characteristic
; Depositional environment
; Development strategies
; Hydrogeological conditions
; Hydrological controls
; Reservoir temperatures
; Total dissolved solids
; Water production rate
; Coal deposits
; Carboniferous
; coalbed methane
; concentration (composition)
; deuterium
; dissolved load
; fluid inclusion
; groundwater exploration
; hydrogeology
; hydrostatic pressure
; karst
; laboratory method
; Permian
; saline intrusion
; China
; Liulin
; Ordos Basin
; Shanxi
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Significant amounts (> 150 m3/day/well) of water are currently being extracted from coalbed methane (CBM) wells in Permian-Carboniferous coal in the Liulin area of the eastern Ordos basin, China. Waters coproduced with CBM have common chemical characteristics that can be an important exploration tool because they relate to the coal depositional environment and hydrodynamic maturation of groundwater and can be used to guide CBM development strategies. The CBM production targets of the No. 3 and 4 coal seams from sandstone in the Shanxi Formation and No. 8, 9, and 10 coal seams in the karst of the Taiyuan Formation were deposited in fluvial-deltaic and epicontinental-sea environments, respectively. This paper combines CBM geology, hydrogeology, CBM recovery, and laboratory data to define mechanisms of CBM preservation including the important influence of groundwater. Relevant indices include fluid inclusions as an indicator of the hydraulic connection between the coal seam reservoir and the overlaying strata and the ensemble characteristics of total dissolved solids (TDS) contents of water, water production rates, and reservoir temperatures as an indication of the current hydraulic connection. The TDS contents of waters from the No. 3 and 4 and No. 9 and 10 coal seams are double those from the subjacent karst No. 8 coal seam, indicating the important control of fast flow in karst. Low-salinity fluid inclusions from the roof of the subjacent-karst No. 8 coal seam also indicate an enduring hydraulic connection with overlaying strata during its burial history. Relatively low current temperatures in the No. 8 (subjacent-karst) coal seam also infer a strong hydraulic connection and active flow regime. Deuterium concentrations are elevated in the mudstone-bounded No. 9 and 10 coal seams, further confirming low rates of fluid transmission. The gas contents of coal seams from the Taiyuan Formation are higher than those from the sandstone-bounded coal seams in Shanxi Formation, also correlating with low rates of water transmission and low permeability. Conceptual models for these fluvial-deltaic and epicontinental-sea environments that are consistent with geology, gas content, and gas and water production rate histories are of gas-pressure sealing for the Shanxi Formation and hydrostaticpressure sealing for the Taiyuan Formation. These results confirm the important controls of hydrogeological conditions on the preservation of CBM and the utility of hydrogeological indicators in prospecting for CBM. Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929299563&doi=10.1306%2f07211413147&partnerID=40&md5=0fb12966b64677a69161a7a94b1a8509
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13064
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Li Y.,Tang D.,Xu H.,et al. Geological and hydrological controls on water coproduced with coalbed methane in Liulin, eastern Ordos basin, China[J]. AAPG Bulletin,2015-01-01,99(2)