盐穴储油库采卤管柱解堵工艺研究

发布时间：2018-04-15 09:19

本文选题：盐穴储油库 + 采卤建腔　；参考：《内蒙古石油化工》2016年Z2期

【摘要】：岩盐与各种油品接触时不发生化学变化,不溶解,不影响油品的质量,因此盐穴作为地下储油库是一种理想的储油方法。在朱桥盐穴储油库实试验井东淮3井采卤建腔施工中随着采卤时间的延长采卤管柱出现堵塞,注入排量逐渐减少,井口压力逐渐增加,导致采卤周期延长,严重影响了盐穴储油库建腔施工的进展。对采卤管柱上附着的堵塞物进行实验室化验发现堵塞物的成分为钙芒硝,通过钙芒硝溶解实验优选了化学溶解药剂氢氧化钠,现场应用取得了较好的效果,证明了氢氧化钠对采卤管柱中的钙芒硝堵塞有较好的溶解作用,提出了解决盐穴储油气库采卤建腔过程中管柱堵塞的方法。
[Abstract]:When the rock salt is in contact with various kinds of oil, there is no chemical change, no dissolution and no influence on the quality of the oil, so the salt cavern is an ideal oil storage method.During the construction of brine production cavity of Donghuai well Donghuai No. 3 well in Zhuqiao Salt cavern, with the prolongation of brine recovery time, the injection discharge decreases gradually, and the wellhead pressure increases gradually, which results in the prolongation of brine recovery period.The construction progress of salt cavern oil storage is seriously affected.By laboratory analysis of the plugging material attached to the halogen pipe string, it was found that the composition of the blockage was Glauber's nitrate. The chemical dissolving agent sodium hydroxide was selected by the Glauber's dissolution experiment, and good results were obtained in the field application.It is proved that sodium hydroxide can dissolve the plugging of glauberite in the halogen pipe string, and the method to solve the blockage of the tube string in the process of building the halogen cavity of salt cavern reservoir is put forward.
【作者单位】：中国石化华东油气分公司;
【分类号】：TE972.2

【相似文献】