阳谷——茌平煤田上古生界生烃潜力研究——以聊页参1井为例

Study on Hydrocarbon Generation Potential of Upper Paleozoic in YangguChiping Coalfield—Taking the No.1 Liaoyecan Well as an Example

摘要:

阳谷茌平煤田是山东省晚古生代石炭二叠纪地层保留较好的地区，发育有本溪组、太原组、山西组和残存的石盒子群，其中太原组和山西组沉积了厚度较大的暗色泥页岩。通过沉积环境分析和泥页岩发育厚度统计，认为山西组泥页岩主要发育在煤3以下，可与太原组泥页岩一起分析研究，太原组暗色泥页岩层段发育厚度占该组地层厚度的68.82%；山西组和太原组暗色泥页岩有机碳含量一般大于1.5%，以中等—极好烃源岩为主；有机质类型为生气型（Ⅲ型）干酪根，镜质体反射率一般在0.6%～1.5%之间，大部分处于成熟阶段。分析认为，山西组下部和太原组暗色泥页岩具备页岩气生成的沉积环境、物质基础、有机质类型和演化条件，明确了山西组下部和太原组暗色泥页岩是区内勘探的目标层位，为进一步工作提供了依据。

Abstract:

YangguChiping coalfield is a well preserved area of the upper CarboniferousPermian in the upper Paleozoic in Shandong province. Benxi formation, Taiyuan formation, Shanxi formation and the remaining shihezi formation developed in this area. Taiyuan formation and Shanxi formation have deposited darkcolored mud shale with great thickness. Based on sedimentary environment analysis and mud shale development thickness statistics, it is concluded that the mud shale of Shanxi formation mainly develops below coal 3, which can be analyzed and studied together with the mud shale of Taiyuan formation. The development thickness of darkcolored mud shale in Taiyuan formation accounts for 68.82% of the formation thickness of this group. The organic carbon content of dark mud shale in Shanxi formation and Taiyuan formation is generally more than 1.5%, with medium to excellent hydrocarbon source rocks as the main source rocks. Type organic matter types as gas rock(Ⅲ) kerogen, vitrinite reflectance is generally Between 0.6% and 1.5%, mainly medium—excellent source rocks. According to the analysis, the dark mud shale of the lower shanxi formation and taiyuan formation has the sedimentary environment, material basis, organic matter type and evolutionary conditions for shale gas generation. It is clear that the lower shanxi formation and the dark mud shale of taiyuan formation is the target horizon for exploration in the area, providing a basis for further work.