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| 基金项目：中国石油重大科技专项“大港油区大油气田勘探开发关键技术研究”(2014E-06-03) |
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| 摘要： |
| 基于钻井、录井、岩芯、铸体薄片和物性分析等资料，对沧东地区中生界J上1-2储层特征及其影响因素进行分析。结果表明，研究区中生界J上1-2储层的岩石类型有岩屑砂岩和长石砂岩2类，砂岩的成分成熟度和结构成熟度偏低。储层孔隙度平均值为18.7%，平均渗透率为62.2×10－3μm2，属于中孔中渗至中孔低渗型砂岩储层，储集物性好。在此基础上，对储层物性的影响因素进行分析，其中构造破碎作用和溶解作用是储层次生孔隙形成的重要因素，大断层上升盘底部及溶解作用强烈有利于有机酸流体进入的部位是寻找中生界有利储集体的方向。研究成果对下一步的勘探部署具有指导意义。 |
| 关键词：中生界 砂岩 成岩作用 影响因素 储层特征 沧东地区 |
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| Abstract: |
| Based on the data of drilling, logging, core, casting thin plate and physical property analysis, the characteristics of the Mesozoic Upper J1-2 reservoir and its influencing factors are analyzed in Cangdong area, Hebei Province. The results show that the target reservoir of the study area is composed of 2 types of lithic sandstone and feldspar sandstone, and the composition maturity and structural maturity of sandstone are low. With average porosity of reservoir of 18.7%, and mean permeability of 62.2×10－3μm2, it belongs to sandstone reservoir with medium porosity and medium-low permeability, and its reservoir property is good. On this basis, the influencing factors of reservoir physical property are analyzed, in which the tectonic fragmentation and dissolution are important factors of formation of secondary pores, and the root of the ascending large faults and the easy passages for organic acid fluid formed by strong dissolution are strongly advantageous to discovering Mesozoic favorable reservoir. The research results are of guiding significance for the next exploration and deployment. |
| Keywords:Mesozoic sandstone diagenesis influence factor reservoir characteristic Cangdong in Hebei Province |
| 李玲玲，于新, 何川，等.沧东地区中生界砂岩储层特征及影响因素[J].地质学刊,2018,42(2):258-263 |
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