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目前，塔里木盆地发现的凝析气藏（田）有４０余个，分布范围几乎遍布全盆地的各个层系。其中以塔北隆起下第三系到三叠系最为集中。凝析气藏与正常干气藏、伴生气藏的成藏环境，烃类的组分、物理化学特征都有着很大区别。首先，凝析气藏重烃组分较干气藏相对要高，相对密度大，在测井响应中气显示不明显；其次，油气藏的储层条件也差别较大，既有高孔高渗的优质储层，也有低孔低渗的劣质储层，给测井解释造成一定困难。针对塔里木盆地凝析气藏的这一特点，结合地质录井、油气分析等资料，提出了一套利用测井技术识别和评价凝析气藏的方法。经过实践证明，这是一套适于塔里木盆地的油气层解释方法。在此基础上对凝析气藏进行储盖组合分析，以达到测井综合评价凝析气藏的目的。
At present, there are more than 40 condensate gas reservoirs (fields) discovered in the Tarim Basin, covering almost all strata of the whole basin. Among them, the Tertiary-Triassic system is most concentrated under the Tabei uplift. Condensate gas reservoirs and normal dry gas reservoirs, associated gas reservoirs, hydrocarbon composition, physical and chemical characteristics are very different. First of all, heavy hydrocarbon components in condensate gas reservoirs are relatively higher than dry gas reservoirs, with relatively large relative densities, and are not obvious in the well logging response; secondly, reservoirs have quite different reservoir conditions, Permeable high-quality reservoirs, but also low-porosity and low-permeability low-quality reservoirs, logging interpretation caused some difficulties. Aiming at the characteristics of condensate gas reservoirs in Tarim Basin and combining with the data of geological logging and oil and gas analysis, a set of methods for identifying and evaluating condensate gas reservoirs by using logging technology is proposed. After practice, this is a set of interpretation methods suitable for the oil and gas in the Tarim Basin. On the basis of this, the reservoir-cap combination analysis of condensate gas reservoirs is carried out to achieve the purpose of well logging comprehensive evaluation of condensate gas reservoirs.