Fracturing sand blocking early warning method and device based on pressure data

The invention provides a fracturing sand blockage early warning method and device based on pressure data, and the method comprises the steps: obtaining the pressure data in fracturing construction; clustering the pressure data to obtain pressure data in a plurality of time periods; performing primary fitting on the pressure data in each time period, and judging whether a fitting result of each time period accords with a preset effect or not; if yes, determining an early warning result of the current time period according to the fitting result; and if not, segmenting the current time period again to obtain a plurality of segmented time periods, and determining an early warning result of each segmented time period. The early warning accuracy of fracturing sand blocking can be improved, and manpower consumption is reduced. 本文提供了一种基于压力数据的压裂砂堵预警方法和装置，其中方法，包括：获取压裂施工中的压力数据；对所述压力数据进行聚类，得到若干时间段内的压力数据；对每一时间段内的压力数据进行一次拟合，判断每一时间段的拟合结果是否符合预定效果；若是，则根据拟合结果确定当前时间段的预警结果；若否，则将当前时间段再次分段，得到若干再分段后时间段，并确定每一再分段后时间段的预警结果。本文能够提高压裂砂堵预