鄂尔多斯盆地奥陶系马家沟组白云岩包裹体特征及其地质意义
发布时间：2018-08-19 07:49
【摘要】：准确认识马家沟组白云岩成因可解决鄂尔多斯盆地白云岩型储集层油气勘探面临的困扰。包裹体研究表明,马家沟组白云岩包裹体稀少,大小多为2~7μm,马五5亚段白云石及桌子山组白云石"雾心"内包裹体以单液相为主,形成温度低于50℃,桌子山组白云石"亮边"内包裹体多为气-液两相,均一温度为71~89℃,均值为88℃,盐下白云岩内包裹体主要为气-液两相,均一温度为76~125℃,均值为93℃。这表明马五5亚段白云岩可能为渗透回流白云岩,桌子山组白云岩为渗透回流叠加埋藏白云岩,盐下白云岩为埋藏白云岩。
[Abstract]:Accurately understanding the origin of dolomite in Majiagou formation can solve the problem of petroleum exploration in dolomite reservoir in Ordos Basin. The study of inclusions shows that the inclusions of dolomite in Majiagou formation are rare, mostly of 2 ~ 7 渭 m in size. The inclusions of dolomite and dolomite "fog core" of submember Ma Wu 5 and Guoshan formation are mainly composed of single liquid phase and the formation temperature is lower than 50 鈩，
本文编号：2191122
[Abstract]:Accurately understanding the origin of dolomite in Majiagou formation can solve the problem of petroleum exploration in dolomite reservoir in Ordos Basin. The study of inclusions shows that the inclusions of dolomite in Majiagou formation are rare, mostly of 2 ~ 7 渭 m in size. The inclusions of dolomite and dolomite "fog core" of submember Ma Wu 5 and Guoshan formation are mainly composed of single liquid phase and the formation temperature is lower than 50 鈩，
本文编号：2191122
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