利用内加热压实式生、排烃实验模拟装置 ,对塔里木盆地巴楚隆起海相的群 4井灰岩进行了热解演化模拟。在实验演化过程中 ,该灰岩表现出较强的生气能力 ,所生成的气体以非烃气为主 (约占 85 %～ 10 0 % ) ,而烃类气体中以甲烷为主 ;该灰岩还具有较强的生油能力 (峰值为 78.5mg g -c) ,生油范围宽 ,并在整个演化过程中均具有较强的排油能力 ,其排油效率分布在 45 %～ 5 5 %之间。灰岩中有机质的赋存形式及其在高温下的演化作用使其具有特殊的生油族组分分异特征 The pyrolysis evolution of Group 4 limestone in the marine phase of Bachu uplift in the Tarim Basin was simulated by means of an internally heated and expelled hydrocarbon generation and expulsion experiment simulator. In the process of experimental evolution, the limestone shows a strong ability to generate gas. The generated gas is mainly non-hydrocarbon gas (about 85% ~ 100%), while methane is the main hydrocarbon gas Rock also has a strong ability to generate oil (peak value of 78.5mg g-c), a wide range of raw oil, and throughout the evolution have a strong ability to discharge oil, the oil discharge efficiency of 45% ~ 55 %between. The occurrence of organic matter in limestone and its evolution at high temperature make it have special characteristics of oil-component distribution