doi:10.16597/j.cnki.issn.1002-154x.2023.03.012
某油田酸化油处理工艺比选及现场应用
任广欣∗ 李堆 孙彪 侯建平 李士通 张鹏
(中国石油化工股份有限公司 西北油田分公司采油二厂,新疆 巴音郭楞蒙古自治州 841600)
Comparison and Field Application of Acidified Oil Treatment Technology in an Oilfield
Ren Guangxin ∗ Li Dui Sun Biao Hou Jianping Li Shitong Zhang Peng
(No. 2 Oil Production Plant, Northwest Oilfield Company, SINOPEC, Xinjiang Bayingolin Mongolian Autonomous Prefecture 841600)
摘要:
某油田为响应党的二十大的号召,保障国家能源安全,推进油田企业高质量发展,着力于解决酸化油处理难 题。 作者首先探究了酸化油破乳脱水影响因素,其结果表明,酸化油破乳脱水的主要影响因素包括 pH 值、酸化淤渣、部分酸化液等。 然后基于原油破乳脱水理论筛选适合的处理方法,并进行现场实验及工艺比选。重力沉降工艺适用于乳化程度较轻且处理量较大的原油体系,破乳脱水效果差;离心分离工艺可适用于处理量小、脱水深度要求高、质量稳定性高、固体颗粒、酸化淤渣多的原油体系,但其设备精密度要求较高,在面对强腐蚀工作条件时故障率较高,运行维护相对困难;水洗除杂 + 热化学破乳 + 高频聚结破乳分离工艺的动设备较少,日常运行维护难度低,但破乳脱水深度介于重力沉降和离心分离,且质量稳定性较差。
关键词：酸油处理 破乳脱水 工艺比选；
Abstract：
In order to respond to the call of the 20th National Congress of the Communist Party of China, guarantee the national energy security and promote the high-quality development of oilfield enterprises, an oilfield focuses on solving the problem of acidified oil treatment. Firstly, the influencing factors of acidified oil demulsification and dehydration were explored. The results showed that the main influencing factors of acidified oil demulsification and dehydration include pH value, acidified sludge, part of acidified fluid, etc. Then suitable treatment methods were selected based on the theory of crude demulsification and dehydration, and field experiments and process comparison were carried out. Gravity sedimentation process was suitable for the crude oil system with light emulsification degree and large processing capacity, and the demulsification and dehydration effect was poor. Centrifugal separation process could be applied to the crude oil system with small processing capacity, high dehydration depth requirements, high quality stability, solid particles, acidified sludge, but its equipment precision requirements were higher, in the face of strong corrosion working conditions, high failure rate, operation and maintenance was relatively difficult. The water washing impurity removal + thermochemical demulsification + high-frequency coalescence demulsification separation process has less dynamic equipment and low difficulty in daily operation and maintenance. However, the demulsification dehydration depth is between gravity sedimentation and centrifugal separation, and the quality stability is poor.
Keywords：acid oil treatment; demulsification and dehydration; process comparison;