Influence of Oil and Water Components on Wall-sticking Occurrence Temperature in High Water-cut Crude Oil Pipeline  

作　　者：Cheng Xianwen Huang Qiyu Wang Kun Cui Yue Hei Shunan Yu Le 

机构地区：[1]Surface Engineering Pilot Test Center,National Engineering Laboratory for Pipeline Safety,Beijing Key Laboratory of Urban Oil and Gas Distribution Technology,China University of Petroleum,Beijing 102249 [2]PetroChina Planning and Engineering Institute,Beijing 100083 [3]Sinopec Petroleum Exploration and Production Research Institute,Beijing 100083

出　　处：《China Petroleum Processing & Petrochemical Technology》2022年第4期51-63,共13页中国炼油与石油化工（英文版）

基　　金：supported by the National Natural Science Foundation of China(NNFC,Grant No.51534007).

摘　　要：To study the wall-sticking phenomenon and prevent pipeline blockage accidents,two analytical methods are used to evaluate the influence of different crude oil components on the wall-sticking occurrence temperature(WSOT).The WSOT and the interactions among oil,water,and surface solids are measured and calculated by various devices under different values of the wax content,water pH,and salinity.The results show that there is greater correlation between the wax content and WSOT than between resins/asphaltenes and WSOT.Furthermore,the wax content,water pH,and salinity have different effects on WSOT.There is generally a positive correlation between wax content and WSOT,whereas the maximum WSOT occurs when the water pH is in the range 5.7–6.5,and decreases under more acidic or alkaline conditions.As the salinity increases,WSOT decreases slightly,but quickly becomes saturated.In terms of interactions,variations in the interfacial tension and adhesion work with pH and salinity are consistent with that of WSOT,while the contact angle exhibits the opposite relation.

关 键 词：non-heating gathering and transportation wall sticking occurrence temperature interfacial tension contact angle adhesion energy 

分 类 号：TE973[石油与天然气工程—石油机械设备]