GEOLOGICAL MODEL OF PALEOTEMPERATURE AND CALCULATION OF OIL GENERATION PER旧D!N THE BZ AREA

In this paper the paleotemperature in the BZ area of Tarim Basin is studi一ed and its geological model is temperature at lhc end of the made.There was a local thermal alteration at high Paleozoic as a result of a large scale igneous ro-ck intrusion, w hereas the gradients of paleotem peratures of the tum and Cenozoic stratum are lower in this area.Although Mesozoic sira-crude oil from Z一1 well is produced from the lower Carboniferous system, its source rock seems to be middle一upper Carboniferous carbonate distributed in the southern BZ area.The result calculated from TTf value shows that the source roc's Su-tied within 3000-6000 metre deep are still at their main oil一forming stage.