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对塔河油田运用储层流体、油气水地球化学以及与油气形成演化有关的水动力、流体场、包裹体等理论方法进行研究表明:塔河油区油气分布特点具有“三大一多”(即含油性差别大,油质差异大,横向变化大,纵向组合类型多)的特点。塔里木盆地北部存在加里东中晚期—海西早期、海西晚期—印支期、燕山期—喜马拉雅早期及喜马拉雅晚期四大水文地质旋回。塔河油区具有长期相对稳定的有利区域水动力背景。塔河油区早期油气主要来自满加尔坳陷及围斜的烃源区,油气主流运移方向是自南而北,晚期油气主要来自满加尔及草湖源区,不同地质时期的油气注入控制了塔河油区油质分布。塔河油区成藏后生作用主要有氧化降解、分异聚集、地层水蚀变及脱沥青等。不同的油气源区、成藏期次、后生作用及不同期次油气叠加复合的不均一性是控制塔河油区油质分布的主要因素。
The research on the application of reservoir fluid, oil-gas-water geochemistry and hydrodynamics, fluid field and inclusion in the Tahe oilfield shows that the distribution characteristics of oil and gas in the Tahe Oilfield have the characteristics of “three major and one more” That is, the difference of oil content is large, the difference of oil quality is large, the horizontal variation is large, and the vertical combination type is many). In the northern part of the Tarim Basin, there are four middle-late Caledonian hydrogeology cycles: Hercynian, Late Hercynian-Indosinian, Yanshanian-Himalayan and early Himalayas. Tahe Oil Region has a long-term relatively stable and favorable regional hydrodynamic background. The early hydrocarbon in the Tahe Oilfield came from the hydrocarbon source area of Manjiaer Depression and the anticline. The main migration direction of oil and gas was from south to north, and the late hydrocarbon came mainly from the Manjar and Caohu source regions. The hydrocarbon injection control in different geologic periods Tahe Oil Region oil distribution. The pyrogeneification in the Tahe oilfield mainly includes oxidative degradation, divergent accumulation, formation water alteration and deasphalting. Different oil and gas sources, hydrocarbon accumulation periods, epigenetic effects and inhomogeneity of oil and gas superimposed over different periods are the main factors controlling the oil distribution in the Tahe oil region.