一种新的密闭取心饱和度校正方法研究

由于在密闭取心和饱和度测试过程中,岩心中的流体存在一定的损失,Y井常规密闭取心油水饱和度测试结果和地下真实情况存在偏差,必须进行校正;而传统校正方法的油水等比例散失原则存在不合理性。提出一种新的校正方法,将蒸馏法饱和度测试后的岩心组成长岩心,在地层条件下进行水驱油物理模后取至地面条件进行蒸馏法饱和度测试,对油水饱和度的损失比例进行了标定,完成了对Y井密闭取心饱和度测试资料的校正。校正结果与测井解释成果对比分析表明,长岩心水驱油校正结果准确可靠,有助于油田水淹层的判断和开发调整策略的制定。

The Study Of A New Method Of Calibrating The Sealed Core Saturation

There is a loss about the liquid in the sealed core in the process of drilling sealing core and saturation test, the oil and water saturation test results have big difference with the truth in the underground, which have to correcting error, and the traditional calibration methods are unreasonables for the oil and water loss of proportion. This paper proposes a new calibration methods, which use the distillation test short cores make up the long core, and carry out the displacement experiment in the formation condition, then carry out the distillation saturation test in the ground conditions, which calibrate the loss rates of oil and water saturation, finally, calibrate the sealed core saturation test data. The calibration result are faithful by contrast the results of well log interpretation, which contribute to judge the water flooded layer and formulate the development adjustment strategy.