Analysis of Application of Pre-screwed Auger Wheels for Operative Increasing of Throughput Capacity of Oil Pipelines

Abstract

In the paper, the application of a pre-screwed wheel of centrifugal main oil pumps is observed. The pre-screwed wheel serves as a backup pump for the main impeller and creates a small head. In this case, the cavitations reserve of the main unit is significantly reduced. The increase of throughput capacity is due to two factors: a slight increase in pressure after the station, as well as a significant reduction in the pressure before the pumping station. The application of a pre-screwed wheel is proposed for the operative increase of a throughput capacity at a small value. Economical comparison of the following methods of increase of throughput capacity is made:

• (1) use of a frequency-controlled drive

• (2) use of anti-turbulent additives

• (3) reduction of the settings at the entrance of stations with the help of pre-screwed wheels

• (4) selective repair of sections

• (5) restoring the pipeline capacity on the basis of determining the actual remaining life of pipelines without selective repair of sections. It is considered that the application of a pre-screwed wheel is characterized by low economic costs and small time of implementation and this method is perspective in oil industry.