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本工作对油井水泥的析水问题进行了初步探讨,研究结果得出:一、油井水泥析水作用按一般试验方法测得的结果与实际固井过程中的情况并不完全相同。二、实际固井中影响析水作用的主要因素是水灰比和凝结时间,尤其是后者,只要初凝不是过慢,一般析水总量不会太大。三、水泥本身析水较大时,要考虑分层析水的危害。
This work carried out a preliminary discussion on the problem of water-extraction of oil well cement. The results of the study are: First, the results of the water-well cement water-ejection test according to the general test method are not exactly the same as those in the actual cementing process. Second, the main factor affecting the effect of water precipitation in the actual cementing is the water-cement ratio and the setting time, especially the latter, as long as the initial setting is not too slow, the total amount of the general water analysis will not be too large. Third, when the cement itself has a large amount of water, it is necessary to consider the hazard of sub-chromatography.