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致密油的勘探越来越受到大家的重视。弄清致密油形成动力条件,对进一步落实该区致密油的资源潜力具有重要的指导意义。通过Petromod软件对研究区26口井的转化率进行模拟,模拟得出在135 Ma时,流体压力达到了上覆静岩压力的0.85倍,油气便开始成藏。此间断转化率介于在0.10~0.27之间,孔隙度处于15%~21%之间。计算得出研究区长73的剩余压力总体表现为北高南低,西高东低的趋势,最大的剩余压力可达近22 MPa,最小也达到了13 MPa。
More and more oil exploration by everyone’s attention. Understanding the dynamic conditions for the formation of tight oil has important guiding significance for further implementation of the resource potential of tight oil in this area. Petromod software was used to simulate the conversion rate of 26 wells in the study area. The simulation shows that at 135 Ma, the fluid pressure reaches 0.85 times of the overlying rock pressure, and the hydrocarbon accumulation begins to accumulate. The intermittent conversion ranged from 0.10 to 0.27 and the porosity ranged from 15% to 21%. It is calculated that the residual pressure of the study area 73 shows the trend of north high south and low west high, the maximum residual pressure can reach nearly 22 MPa and the minimum reaches 13 MPa.