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黄骅坳陷中段西部的板桥凹陷沙河街组烃源岩压实曲线具有两个明显的欠压实峰，沙一段中部的欠压实峰是该层位的低熟烃源岩生烃所形成的，其幅度小于沙二段和沙三段成熟烃源岩生烃所形成的欠压实峰，这种不均衡的剩余压力分布特征导致沙一段中部的油主要来自同一层段的低熟烃源岩，而沙一段下部和沙二段的油则来自下部的成熟烃源岩。平面上，低熟油气的运移方向也受到过剩压力的控制，从高过剩压力区向低过剩压力区运移，即由板１３井深洼部位向北西、南东以及南西方向运移
The compaction curves of Shahejie Formation source rocks in Banqiao Sag in the middle section of the middle Huanghua Depression have two obvious under-compacting peaks. The under-compacting peak in the middle part of Shahejie Formation is formed by hydrocarbon generation from low-maturity source rocks in this horizon , Which is less than the under-compacted peak formed by the hydrocarbon generation of the mature source rocks in the second member of Shahejie Formation and Shahejie Formation. The unbalanced distribution of residual pressure causes the oil in the middle part of Sha1 Member to come from low maturity source rocks in the same layer, While the oil in the lower part of Sha1 and Sha2 is from mature source rocks in the lower part. In the plane, the migration direction of low-mature oil and gas is also under the control of excess pressure, shifting from the overpressure zone to the overpressure zone, ie, from the deep depression of Well Pan 13 to the northwest, south east and southwest directions