Provided detailed and accurate pipeline defects data for pipeline overhaul project every year；
Most of the SouthWest pipelines had the characteristics of long construction time, complex geographic environment, small pipe diameter, medium (natural gas) unstable flow velocity, high content of hydrogen sulfide；
The pipeline was highly abrasion to the vehicle seal assembly (seal cup, etc.)；
Using a series of low velocity packets, anti-hydrogen sulfide corrosion treatment procedures, etc. The high wear resistance type sealing assembly was used in the inspection tool；
Through testing and comparison of several domestic and foreign ILI companies on the SouthWest pipeline, it had been proved that only PPL can carry out various modifications of the equipment through its strong research and development ability, and successfully completed various SouthWest inspection tasks. Since 2004, PPL has developed 8 sets of inspection data processing package system according to the characteristics of SouthWest pipeline, and achieved good technical results in operation practice
Through the verification of excavation, the accuracy of PII inspection was approved by SouthWest oil and gas field company, which ensured the owner to carry out targeted reinforcement and repair plan；
Since 2004, PPL has inspected nearly 1,000 km of pipelines in SouthWest Oil & Gas Field every year.