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运用棒色谱ＴＬＣ－ＦＩＤ和油显示仪ＯＳＡ对塔中四号构造ＴＺ４、ＴＺ４０２及ＴＺ４０１井石炭系岩芯进行密集采样分析（约３个／ｍ），并选择典型原油进行ＧＣ、ＧＣ／ＭＳ和碳同位素分析。研究表明，石炭系储层油族组成在横向和纵向上都存在明显的非均质性；纵向上可分为三段：ＣⅢ１（油层段）；ＣⅢ２、ＣⅢ３（油水同层段），ＣⅢ２、ＣⅢ３中局部含油率较高的层段可能有试油价值。推测原始油藏可能受喜山阶段的构造运动破坏，ＣⅢ３油气发生过自西向东的再分配，ＣⅢ２油气则沿断层向上溢出，形成现今具两期古油水界面的油水系统格局。据横向上存在的成熟度差异，推测来自下古生界的主力油源注入方向可能是由北西向南东；但色谱和碳同位素等资料反映ＴＺ４０１井所在的１号高点可能有另一次要的源自上古生界的原油混入
The GC-MS, GC / MS and the typical crude oil were selected for intensive sampling analysis (about 3 / m) using the bar-chromatographic TLC-FID and oil display OSA on the TZ4, TZ402 and TZ401 well in the Tazhong IV. Carbon isotope analysis. The results show that the oil composition of Carboniferous reservoirs shows obvious heterogeneity in both horizontal and vertical directions, and can be divided into three sections longitudinally: CⅢ1 (oil layer), CⅢ2, CⅢ3 (oil and water in the same layer), CⅢ2, C Ⅲ 3 in the higher oil content of the interval may have a test oil value. It is speculated that the original reservoir may be damaged by the tectonic movement in the Himalayan period. CⅢ3 oil and gas have been redistributed from west to east and CⅢ2 oil and gas have spilled upwards along the fault, forming the current pattern of oil-water system with two ancient oil-water interfaces. According to the differences in maturity, it is speculated that the main oil source from the lower Paleozoic could be injected from northwest to south, but the data such as chromatograms and carbon isotopes may reflect that the No. 1 high where TZ401 is located may have another The crude derived from the Upper Paleozoic mixed