| An isodomon oil field which stores approximately about 5 hundred million tons of thick oil was located in Tahe River near some tract of Talimu basin, detected by Xin Xing Petroleum Co. Ltd of SINOPEC in 1999.Today, in view of high hauling charge via automobile and by train, to employ the existing Kushan oil transporting pipeline under constant temperature is considered as an optimum selection to carry the thick oil outside. But the optimum strategy is also challenged by many technical puzzles, among which a main issue focus on following facts: Kushan oil pipeline is adapted to low thick oil and has been shaped into a large overall drop; many physical parameters of Xin Xing thick oil are apparently different from those of Kushan oil. Therefore, this paper especially conducts theoretic analysis and experiments on site on the combined oil transportation under constant temperature (UCT) using the existing Kushan oil transporting pipeline .The main content is given as the follows:(1)From the viewpoint of actual necessity to transport combined oil consisting of highly sticky cruel oil and low condensing temperature and lowly sticky cruel oil, the paper successfully solves a series of combined transportation by Kushan pipeline, achieves an oil mixed ratio performance of Xinxing's and Talimu's cruel oil, derives the original mixed ratio of the thick oil injected into original mixed oil carried by Kushan pipeline UCT and the corresponding operation craft, considers the effects on the combined oil flow ability when relive valves and pump switching put into action and the variation performance of the combined oil in transportation.(2)Also, based on experiments on site, the paper proposes many transportation options due to a few different oil mixed ratio of the combined oil and testify their technical reliance. The results indicates that annual combined transportation capacity between 1,000 million tons and 1,500 million tons, is technically allowable without increasing additional equipment demand and largely modifying overall Kushan pipeline. In addition, transportation UCT is reasonably safe since the temperature of combined oil is below the field/ground temperature.(3)And then, the paper evaluates the net profits created by the optimum strategy in details. In spite of temporary consumption of 35 thousand of Xinxing cruel oil when experiments are required on site, the net profit reaches 3,475 million RMB; regarding no additional equipment demand and stabilizing annual outputs of 1.3 million tons of Xinxing cruel oil, Kushan pipeline directly gains considerable net profit 129.15 million RMB.(4)Finally, according to the promising trend needs , a second profound construction is being taken into consideration ,and the total output per year will realize one million tons of cruel oil. To sum up, a promising and profitable future is coming!... |
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