煤系蓋層 的英文怎麼說
中文拼音 [méixìgěcéng]
煤系蓋層
英文
overlying strata of coal measures-
On the basis of analyzing and chemically examining a large numble of samples, through comprehensively studying the reservoiring geological conditions as hydrocarbon generation, petrophysical property, reservoir - caprock assemblage and lithologic trap type, by use of mathematical statistics, it was considered that yulin gas field is located in the greatest hydrocarbon - generating intensity area in the basin and its hydrocarbon source rocks are the permo - carboniferous coal measure strata, thus possessing the material conditions of forming large - sized gas fields
通過大量的化驗分析樣品數據，採用數理統計的方法對生烴條件、儲層物性、儲蓋組合配置、巖性圈閉類型等成藏地質條件進行了較為深入的研究，認為榆林氣田處于鄂爾多斯盆地最大生烴強度區，其烴源巖為石炭二疊系煤系地層，具備形成大型氣田的物質條件。The basement of the basin is consist of precambrian crystal basement and paleozoic folding basement, while the cover has undergone the evolution of intra - continental rife in permian, down warped basin in triassic - cretaceous period and inter - mountains basin in tertiary. the main sediments are huge - thick volcanic rock, shallow intrusive rock and tuff in early permian, dark mudstone, marl and muddy dolostone in lucaogou formation in middle permian, huge thick volcanic rock, intruder in tiaohu formation in middle permian, miscellaneous sandy gravel, sandstone and gray mudstone in triassic ( the red is under the gray, and huge - thick dark gray, gray sandy gravel, sandstone, mudstone with coal layer in jurassic
盆地基底由前寒武紀結晶基底和古生代褶皺基底組成，盆地蓋層則經歷了二疊紀的裂谷盆地、三疊紀?白堊紀的坳陷盆地和第三紀后的山間盆地的演化過程。盆地主要沉積了下二疊統巨厚火山巖、淺成侵入巖和凝灰巖；中二疊統蘆草溝組的暗色泥巖、泥灰巖、白雲質巖石以及條湖組的巨厚層火山巖、侵入巖；三疊系雜色砂礫巖、砂巖及灰色泥巖（下紅上灰） ；以及侏羅紀厚層深灰、灰色砂礫巖、砂巖、泥巖夾煤層。On the basis of comprehensive analyses on hydrocarbon accumulation conditions in the four representative foreland basins, kuqa basin, southern junggar basin, western sichuan basin and northern margin of qaidam basin, some conclusions are made as follows ; the foreland basins in central and western regions of china are characterized by multi - set source rocks dominated by coal measure ; heterogeneous reservoirs ; multiple and sealing cap nick ; anticline traps ; unblocked transport system composed of fault, unconformity and highly permeable sand body ; anti poor conservative conditions. etc
在綜合分析和對比庫車、準南、柴北緣和川西等具有代表性的前陸盆地的油氣成藏條件的基礎上指出，中西部前陸盆地具有以煤系為主的多套源巖，發育非均質儲集層，多套多封閉性的蓋層，以背料為主要圈閉；斷裂、不整合和高滲透砂體組成良好輸導體系，保存條件較差等特點。
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