JZ25S油气田沙二段油气成藏时期探讨

Hydrocarbon accumulation period of the second member of Shahejie Formation in JZ25S Oil and Gas Field

姚长华 刘明玲 彭洋

中海石油能源发展采油技术服务公司渤海采油工程研究院，天津 300452 中海石油基地采油公司，天津 300452

油气充注时期的确定是油气成藏研究的重要内容之一。文章以辽西低凸起JZ25S油气田为例，通过优化孔隙度法求取地层剥蚀厚度；利用地层回剥法恢复地层埋藏史；利用流体包裹体均一温度、古地温与构造活动时间相结合的方法，综合分析JZ25S油气田的油气成藏时期。分析表明：JZ25S油气田的油气成藏时期为东一段沉积末期和其后的构造抬升初期，且具有一次充注形成的特点。

The analysis of hydrocarbon accumulation period plays an important part in the study of hydrocarbon accumulation. This
article袁taking the JZ25S Oil and Gas Field in low uplift of West Liaoning as an example袁seeks the optimum estimation of formation
denudation thickness by using the porosity data袁restores the buried history of this area by using the back-stripping method袁
analyzes the time of hydrocarbon accumulation combined with the homogenization temperature of fluid inclusion袁palaeogeothermal
and the structural activity time. The study results have an important guide sense to the next oil and gas exploration of this area.