煤系地层 meaning in Chinese
coal measure strata
Examples
- Coal measures seismic wave regional development characters
煤系地层地震波区域性发育特征 - Experimental research on permeability of rocks of coal - bearing strata
煤系地层岩石渗透特性试验研究 - Discussion on how to research breaking - loss wing coal seam in coal series stratum
浅谈如何在煤系地层寻找断失翼煤层 - Formation cautions of coal stratum and its occurrence characteristics in nantun mine field
南屯井田煤系地层的成因及含煤特征 - This difference is caused not only by maturity but also by source rock . natural gas in baimiao area is mainly derived from tertiary source rock and carboniferous permian formation in qianliyuan sag , which is near the high point on lanliao fracture belt
白庙地区天然气主要来源于前梨园洼陷第三系烃源岩和石炭?二叠系煤系地层，靠近兰聊断裂带构造高点，浅层es _ 2 ~下? es _ 3 ~ 2气层具有较高的ar ~ ( 40 ) ar ~ ( 36 )比值，为煤型气及混合气。