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对鄂尔多斯盆地中东部地区上古界的气源进行了对比,分析了该区域的地质条件。鄂尔多斯盆地中东部地区上古生界为独立的天然气系统,上古生界气藏形成受多种因素的控制。该区天然气藏主要为岩性气藏,其分布受沉积特征控制,其中本溪组山2段气藏由储集体决定;山1段盒7段气藏受盖层质量控制;盒6段上石盒子组气藏较少。其原因在于其中的泥岩受异常高压的阻止作用,也因为层位较高,从气源岩到达的气量较少。
The gas source in the Middle East Ordos Basin was compared with the gas source in the Middle East, and the geological conditions in the area were analyzed. The Upper Paleozoic in the eastern Ordos Basin is an independent natural gas system. The formation of the Upper Paleozoic gas reservoir is controlled by many factors. The gas reservoirs in this area are mainly lithologic gas reservoirs whose distribution is controlled by depositional features. The gas reservoirs in Block 2 of Benxi Formation are determined by the reservoirs; the gas reservoirs in Block 1 and Box 7 in Block 7 are controlled by the cover quality; Stone Box Group gas reservoir less. The reason for this is that mudstone in it is blocked by abnormally high pressure, and because of the high horizon, less gas is reached from the source rock.