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为深入对临清助陷地质演化史的研究，在坳陷东部沈参1井取样进行磷灰石裂变径迹分析。系统取样19块，层位为东营组至沙四段上部。根据对磷灰石裂变径迹年龄、长度分布与井深关系的综合研究，认为：①沈参1井退火带古地温为68～123℃，有效加热时间为30～38Ma，2500～2600m井深地层处于退火过渡带，深于2600m地层进入稳定退火带；②沙三段上部地层沉积期相选活动频繁，物源区极不稳定，此后至东营组底部地层沉积期为相对稳定沉积期，但沙二段沉积中期有短暂沉积间断；③东营组沉积期有12Ma的沉积间断，使下优油源展古地温下降，对生油有不利影响；④今地温明显高于古地温，但地温开始上升时间距今不远。
In order to further study the geological evolution history of the Linqing subsidence depression, apatite fission track analysis was taken in the well of Shen 1 in the eastern depression. A total of 19 samples were taken from the system, with the upper part of Dongying Formation and Shasi Section. According to the comprehensive study on the relationship between apatite fission track age and length distribution and well depth, it is considered that: ① the ancient geothermal field in Shen 1 well is 68 ~ 123 ℃, the effective heating time is 30 ~ 38Ma, and the well depth of 2500 ~ 2600m is The transitional zone is deeper than 2600m into the stable annealing zone; (2) the sedimentary period of Upper Third Member of Shahejie Formation is active and the source area is very unstable; from then on, the sedimentary period to the bottom of Dongying Formation is relatively stable, There is a short sedimentary interval in the mid-stage of sedimentary deposition; ③ The depositional interval of 12Ma in Dongying Formation deposited during the depositional period decreased the paleo-geothermal temperature of the source oil of Lower Xiaoyou and negatively affected the oil production; ④the present temperature was significantly higher than the paleogeothermal but the temperature began to rise Not far away.