Ding House High Pour Point Oil, Wax Melting Wax Law And Countermeasures

As a kind of important resource, the heavy oil has been paid much attention to for a long time, but it makes very difficult to study its composition and structure for the complexity and the diversity. Although many researchers at home and aboard use sorts of analytic techniques to study it and make certain progress, we still lack of practical and effective references in the face of its exploitation and transportation.This article emphasizes on different thick oil samples of Dingjiawuzi sub-oil region, ShengLi Oilfield. We Use the advanced analytical test method to research on its chemical composition and the physical property systematically. We researched on the sample of the oil region Wangl40-l well oil about high pour point and viscous crude oil to analyze the rule of wax separated out and wax melting. The research reveals the rule of the wax influences on to the crude oil rheological property. We provided massive empirical datum and theory basis for the oil exploitation, wax elimination and prevention.The research indicated that the wax and the sol asphaltene total content of The Wangl40-l well oil sample is 50.23%; the wax and the sol asphaltene total content of the Wang131 well oil sample is 69.89%; the wax and the sol asphaltene total content of the Wangl32 well oil sample is 65.52%, all this above indicated the Dingjiawuzi heavy oil is the typical ultra heavy oil.The wax separated out point of crude oil will increase approximately 2.5-4℃ when the oil mineralization degree elevates, or the solid particle is introduced into the oil. When we introduce the light oil and organic solvent, the wax separated out of crude oil will decrease rapidly. Of the above factors, the light oil influences the wax separated out point of crude oil mostly. When the increment is 10%, the wax wax separated out point of crude oil will reduce about 15℃.The research analyzed influence the pressure on the wax separated out rule. When pressure is much high, the influence is not obvious. But when the pressure elevates, the rheological property of the sample oil will change the performance to the...