塔里木盆地孔雀河地区侏罗系油气成藏期次研究

根据储层的成岩次序、油气包裹体特征及含烃盐水包裹体均一温度,结合伊利石测年及烃源岩的演化史,对塔里木盆地孔雀河地区成藏期次进行综合研究,认为孔雀河地区下侏罗统阿合组含油气储层有三期油气充注成藏过程:第一期为燕山中、晚期,以油为主,成熟度中等偏低,油质较重,系下古生界古油藏破坏后的二次充注;第二期为喜山早期,约50-40 Ma,以油为主含气,成熟度较高,为轻质油类型,油源仍来自深部;第三期为喜山中、晚期(20 Ma以来),以气为主含油,有来自下部地层中干酪根和原油的高温裂解气,也有来自侏罗系地层自身生成的石油(局部地区)和天然气

Research on Jurassic oil-gas accumulated period and order in Kongquehe region of Talimu basin

According to diagenetic sequence, characteristic of oil and gas inclusion and hydrocarbon and saline inclusion of the reservoir, combining illite year measurement and source rock evolution history, this article made comprehensive study on Jurassic gas reservoir petroleum accumulated period and order in Kongquehe region of Talimu basin and concluded that the oil and gas reservoir in Ahe formation of lower Jurassic in Kongquehe area has three oil and gas injecting and accumulating period. The first stage is Yanshan mid - later stage, mainly oil, under middle maturity, heavy oil, oil resource comes from secondary injection after the destroy of poleozoic erathern reservoir. The second stage is early Xishan, about 50 - 40Ma, mainly oil and contains gas, more maturity, light oil, oil resource comes from the deep area. The third stage is mid -later Xishan(20Ma- ), mainly gas, some come from high temperature pyrolysis gas of kerogen and crude oil in lower formation and some come petroleum and natural gas produced from Jurassic formation.