Study on Throughput Increasing Technology of TeShi Supper Heavy Crude Oil Pipeline

In the light of properties of Shuguang Supper Heavy Crude Oil produced in Liaohe Oilfield and current situation of pipeline transportation, based on structural features of twin-screw pump, theoretical analysis on influence of pump frequency and helical lead on pump displacement is made. By means of changing pump frequency and/or helical lead, pump displacement regulation is realized. Actual operating results show that through increasing pump frequency and helical lead simultaneously, maximum throughput for individual pump and annual throughput of pipeline can be achieved, which realize the goal of increasing transportation capacity of TeShi Supper Heavy Crude Oil Pipeline. It is considered that remarkable social effect and economic benefit can be provided with increasing the throughput of TeShi Supper Heavy Crude Oil Pipeline by means of frequency-variable and helical lead-variable pump, and safety and reliability can be seen in actual operation, which can provide a reference for the same oil pipelines.