Petroleum extraction pipeline

The utility model relates to a petroleum extraction device, in particular to an anti-freezing and anti-blocking petroleum extraction pipeline. The petroleum extraction pipeline comprises an inner layer and an outer layer arranged on the outer surface of the inner layer in a sleeving way, wherein a heat insulation layer, a thermal isolation layer and a pressure sensor layer are sequentially arranged between the inner layer and the outer layer. The petroleum extraction device has the advantages that the heat insulation layer and the thermal isolation layer are sequentially arranged between the inner layer and the outer layer, so that the heat insulation effect can be realized on petroleum in the pipeline, and the petroleum freezing condensation is prevented; the pressure sensor layer is adopted, so when the petroleum blockage inside the inner layer occurs, pressure can be generated on the whole petroleum extraction pipeline, the petroleum extraction pipeline expands, the generated pressure extrudes the pressure sensor layer, a sensor arranged in the pressure sensor layer converts pressure change signals into electric signals and transmits the electric signals to operators, and the operators can take corresponding measures in time for eliminating the blockage.