• 责任者：Chang Xinghao (North China Branch Company ; SINIOPEC ; Zhengzhou 450006 ; China) ; Song Kai
• 刊名：Natural Gas Industry
• 出版年：2013
• 卷期：33(10)
• 关键词：气藏 ; gas reservoirs ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.25-31
• 图表：6 illus., 4 tables, 19 refs.
• 分类号：1003
• issnNo：ISSN1000-0976
• isbnNo：CN51-1179/TE

     The Shiguhao area in the northern Ordos Basin is unique in geological conditions and relatively complex geological structures. The types and distribution of gas reservoirs in this area are still poorly understood, which impedes gas exploration and production there. Based on the analysis of the geological characteristics of hydrocarbon accumulation and in combination with the available new logging, drilling, seismic and gas production test data, the Paleozoic gas reservoir types were recognized in different sequences and at different areas. The findings were achieved as follows. a. The structures in this area can be finely divided into a slope zone and an uplifted zone. The structural differences between them influence the gas reservoir types in the He 2fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">＋3 fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">（the 2ndfareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin"> and 3rdfareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin"> members of the Lower Permian Shihezi Fmfareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">）. b. Laterally, the Well Jinfareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">33 is the demarcation line of gas reservoir types in the He 2fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">＋3. In the uplifted zone to its east, structuralfareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">lithologic reservoirs are predominant. In contrast, in the slope zone to its west, lithologic reservoirs are predominant and are large in gasfareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">bearing areas and reserve potential, thus being favorable targets of future exploration. fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">c. Verticallyfareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">, the complex structures and lateral gas migration result in different gas reservoir types at different horizons. The control of tectonic structure on gas reservoir types is getting weak upwards. Lithologicfareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">structural gas reservoirs are dominant in the 1st member of the Lower Permian Shanxi Fm and the 1st member of the Lower Shihezi Fm, while lithologic gas reservoirs are predominant in the He 2fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">＋3.