一、前言 近两三年来,克拉玛依油田浅层稠油的勘探已取得了重大的突破。随之而来的稠油层的试油层数逐渐增加。过去对这种稠油层试油,要取上油样,需降液几次,花半个月至两个月时间。在有些原油十分稠的井内,即使花这样长的时间也难以取上油样。例如,九浅21井在八道湾组有一层花了4个月时间,测液面时见少量稠油,但未取上油样。为 I. Introduction In recent two to three years, the exploration of shallow heavy oil in Karamay Oilfield has made a major breakthrough. The resulting number of oil layers in the heavy oil layer increased gradually. In the past on this heavy oil layer test oil, to take the oil sample, down several times, spend half a month to two months time. In some wells where the crude oil is very thick, it is difficult to pick up the oil even if it takes such a long time. For example, it took four months for a well in the Jiujiang-21 well to reach the bottom of the Badaowan Formation. A small amount of heavy oil was seen at the liquid level but no oil sample was taken. for