鄂尔多斯盆地塔巴庙区块下马家沟组膏盐岩层含气机率分析

Analysis of gas - bearing probability of gypsum - salt rock layer in Lower Majiagou formation of Taba temple Block, Ordos Basin

从区域地质概况入手,详细分析鄂尔多斯盆地下古生界烃源岩地化特征、有机质丰度、成熟度以及地质演化过程。结合地质录井资料,论述了鄂尔多斯盆地塔巴庙区块下古生界下马家沟组三段普遍较好的气测显示,认为本区有丰富的气源岩、较好的储集层,在该区下古生界下马家沟组膏盐岩层中存在天然气藏的可能性大,并建议对部尔多斯盆地下古生界下马家沟组三段膏盐岩的油气加强勘探力度,开辟鄂尔多斯盆地塔巴庙区块勘探开发的新领域。

Beginning with the survey of regional geology, this paper analyzes the geochemical characteristic of source rock, as well as organic matter abundance, maturity and geology evolvement in Lower Paleozoic, Ordos Basia In combination with the geology logging data of Taba temple Block, better gas shows was found in the third member of lower Majiagou formation in Paleozoic. Because of abundant gas source rock and good reservoirs, it is suggested hydrocarbon exploration should be strengthened and new areas should be exploited in Taba temple block.