塔里木盆地迪北地区阿合组致密气藏富集主控因素研究
Study on the Main Controlling Factors of Tight Gas Reservoir Enrichment in the Ahe Formation of Dibei Area, Tarim Basin
摘要: 为明确迪北斜坡带油气成藏条件及储层孔隙演化规律，本文对该区域地质背景、储层基本特征及阿合组储层孔隙度演化过程展开系统研究。根据单井分层数据、生烃特征、大地热流值变化和埋藏演化历史开展petromod-1D模拟，并结合实测Ro和地温数据进行拟合。根据人工圈绘和计算机图像定量分析技术进行定量统计；将不同作用的孔率，按实测孔隙度与对应实测孔率的对应关系，转化为与增减相对应的孔隙度；各关键作用发生时的深视窗是根据成岩序列和现象分析关键溶解和胶结作用的发生范围来确定的。研究揭示了迪北斜坡带天然气成藏的优越地质条件及储层孔隙度的动态演化过程，为区域油气勘探提供理论依据。
Abstract: To clarify the hydrocarbon accumulation conditions and reservoir porosity evolution laws in the Dibei Slope Zone, this study systematically investigates the regional geological background, basic reservoir characteristics, and porosity evolution process of the Ahe Formation reservoir. PetroMod-1D simulation is conducted based on single-well stratigraphic data, hydrocarbon generation characteristics, changes in terrestrial heat flow values, and burial evolution history, which is further fitted with measured vitrinite reflectance (Ro) and geothermal data. Quantitative statistics were conducted using manual delineation combined with computer image quantitative analysis technology; the porosity related to various processes was converted into the corresponding porosity with increase or decrease based on the correlation between measured porosity and the corresponding measured porosity; the depth window for the occurrence of each key process was determined by analyzing the occurrence range of key dissolution and cementation processes according to the diagenetic sequence and phenomena. This study reveals the superior geological conditions for natural gas accumulation and the dynamic evolution process of reservoir porosity in the Dibei Slope Zone, providing a theoretical basis for regional hydrocarbon exploration.
文章引用：杨鹏宇, 黄俨然. 塔里木盆地迪北地区阿合组致密气藏富集主控因素研究[J]. 石油天然气学报, 2026, 48(2): 269-279. https://doi.org/10.12677/jogt.2026.482032

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