塔河油田奥陶系热流体活动期次的流体包裹体证据

Fluid inclusion evidences for the orders of thermal fluid activities in the Ordovician of Tahe oil field.

针对塔河油田奥陶系存在多期热流体活动,利用显微测温技术检测流体包裹体的均一温度,并开展激光拉曼分析得出流体包裹体中流体的盐度,从而按各自的标准分别划分热流体活动的期次.测试结果的对比和综合分析表明,两种方法确定出的热流体活动期次具有良好的一致性.塔河油田奥陶系在地质历史时期共经历了5期热流体活动,且由流体包裹体记录的各期热流体的平均温度分别为:89.4～97.0、10 5 .7～112 .3、117.6～12 7.7、133.4～14 1.3和14 9.6～15 7.

Aiming at the multiple thermal fluid activities in the Ordovician of Tahe oil filed, microthermometry and laser Raman analysis of fluid inclusions were employed to determine the orders of thermal fluid. On the basis of integrated analysis, the results of calculated salinities by laser Raman spectra were consistent with that of homogenization temperatures, and both come to the conclusion that the Ordovician of Tahe oil field underwent five thermal fluid activities during its evolution. And the average temperature ranges recorded by fluid inclusions are 89 4-97.0, 105.7-112.3, 117.6-127.7, 133.4-141.3 and 149.6-157.5 ℃, respectively.