论文部分内容阅读
从克-乌断裂带东北端和西南端的两个原油中分离出沥青质,对两个原油及沥青质进行了热转变试验。试验结果表明,Pr/Ph 比值在一定成熟度范围内(即低于300℃)可以判别原油类型。本试验再次证实了以往的结论,即克拉玛依地区至少有两种类型的原油,以风3井为代表的石炭系原油及以中拐114井为代表的可能产自二迭系的原油。中拐114井开始产气的温度低于风3井原油,中拐114井的甾烷成熟度参数也较低。中拐114井原油沥青质的热变产物中的4-甲基甾烷比风3井丰富,这说明它的原始母质中有较多陆源腐殖质。
Asphaltene was separated from two crude oils at the northeastern and southwestern ends of the Cretaceous-Ukrainian fracture zone, and thermal transition tests were conducted on two crude oils and asphaltenes. The experimental results show that the crude oil type can be distinguished by the Pr / Ph ratio within a certain range of maturity (ie below 300 ℃). The test confirms the previous conclusion that there are at least two types of crude oil in the Karamay region, Carboniferous crude oil represented by the Feng-3 well and crude oil possibly derived from the Permian oil field represented by Zhongkai-114 well. The gas production in Zhongkai 114 well was lower than the temperature in Feng 3 well, and the sterane maturity parameter of Zhongkai 114 well was also lower. 4-Methylstest in the thermal asphaltene product of Zhongkai 114 well is more abundant than that of the Feng-3 well, indicating that there is more terrigenous humus in its original parent material.