Experiment and numerical simulation of distribution law of waterbased corrosion inhibitor in natural gas gathering and transportation pipeline  

作　　者：En-Bin Liu Hao Tang Yin-Hui Zhang Dang-jian Li Bo Kou Ning Liu Mohammadamin Azimi 

机构地区：[1]Petroleum Engineering School,Southwest Petroleum University,Chengdu,610500,China [2]Research Institute of Natural Gas Technology,Southwest Oil&Gasfield Company,PetroChina,Chengdu,Sichuan,610213,China [3]National Energy Research and Development Center of Sour Gas Exploitation,PetroChina,Chengdu,Sichuan,610213,China [4]Sour Gas Exploitation Pilot Test Center,PetroChina,Chengdu,Sichuan,610213,China [5]China United Coalbed Methane Corporation,Ltd,Taiyuan,030000,China [6]Trenchless Technology Center,Louisiana Tech University,Ruston,LA,71270,USA

出　　处：《Petroleum Science》2023年第3期1857-1873,共17页石油科学（英文版）

基　　金：supported by the Sichuan Natural Science Foundation(2023NSFSC0422);the Petrochina's"14th Five-Year plan"Project(2021Dj2804).

摘　　要：The transmission medium of natural gas gathering and transportation pipelines usually contains cor-rosive gases,which will cause serious corrosion on the inner wall of the pipelines when they coexist with water.Therefore,it is necessary to add corrosion inhibitor to form a protective film to protect the pipeline.The distribution of corrosion inhibitors in a gathering and transportation pipeline in Moxi gas field was studied by combining experiment and simulation.The Pearson function was used to calculate the experimental and simulation results,and the correlation was more than 80%,indicating a high degree of agreement.The simulation results show that:①The larger the pipe angle,filling speed and gas flow rate,the smaller the particle size,the better the distribution of corrosion inhibitor particles in the pipe.The filling amount will affect the concentration,but the distribution trend is unchanged;②A method to determine the filling mode based on the loss was proposed,and for this pipeline,the loss of corrosion inhibitor was determined to be 5.31×10^(-3) kg/s,and the flling amount was recommended to be adjusted to 2o L/h,which has certain guiding significance for the actual flling strategy of pipeline corrosion inhibitor.

关 键 词：Corrosion inhibitor Corrosion Computational fluid dynamics ELECTROCHEMISTRY Droplet distribution 

分 类 号：TE973[石油与天然气工程—石油机械设备]