平南油田油气成藏期次研究

Study on accumulation phases of oil and gas reservoirs in
Pingnan Oilfield

 陈维涛周瑶琪陈勇王强张鹏飞

Chen Weitao,Zhou Yaoqi,Chen Yong,et al .

 中国石油大学地球化学与岩石圈动力学开放实验室，山东东营257061

Laboratory of Geochemistry &Lithosphere
Dynamics in China University of Petroleum, Dongying 257061,
China

 采用定性和定量2 种方法对平南油田油气成藏期次进行了对比研究。定性方法采用圈闭
形成期法和生排烃时期法，定量方法采用流体包裹体均一温度法。2 种方法研究结果吻合，表明平南油
田奥陶系储层在东营期末一直到第四纪都有油气充注，但主要成藏期为明化镇早期和晚期两期油气充
注，寒武系储层在明化镇期一期充注完成。

Accumulation phase of oil and gas reservoirs is a difficult point
in hydrocarbon accumulation study. It has important meanings to
confirm the period and time of accumulation, which can help us
study the formation and distribution of accumulation and direct the
exploration of oil. This paper estimates qualitatively the phase of
Pingnan accumulation by analysing the formation period of traps and
hydro -producing and -discharging periods of source rock. Then,
combined with the tectonic evolvement and thermal history, it
analyses quantificationally the period and time of accumulation by
means of reservoir fluid inclusion. The integrated analysis indicates
that the Ordovician reservoir is charged from the end of Dongying
period to Quaternary. But the key phases are the early period and
late period of Minghuazhen. The Cambrian reservoir has one phase
of charging which is Minghuazhen period.