|
|
Introducing Pseudo Steady State Nitrogen Lifting Rate in Coiled Tubing Unloading Operations Based on Numerical Methods
|
|
|
DOR
|
20.1001.2.9919199705.1399.11.1.108.3
|
نویسنده
|
- - ,- - ,- -
|
منبع
|
كنگره مهندسي شيمي - 1399 - دوره : 11 - یازدهمین کنگره بین المللی مهندسی شیمی - کد همایش: 99191-99705
|
|
|
چکیده
|
One of the most widely applications of coiled tubing is unloading the heavy weight fluids by nitrogen gas# dynamic time dependent simulations give accurate results, but reasons like availability, run time,and etc#,cause them to be ignored for field simulations# controlling the nitrogen injection rate in dynamic simulations results are difficult regarding, too many disturbances and field limitations# on the other hand steady state software may cause failure of well intervention and not reliable due to in-dependency of time and transient# disturbances affected by viscosity and density changes is the main problem# by considering changes in fluid characteristic parameters, calculating unloading time, disturbances trend and fluctuations can be figured out from beginning to stability of well head pressure with numerical methods# simulation has been implemented with the help of multi phase transient flow simulator too# both transient and pseudo steady state methods are compared with operation results# transient flow simulator results illustrated about 5% deviation from real operation ,how ever error comes to about 10% when using pseudo steady state numerical method #on the other hand simulation with dynamic multi phase flow simulator is time suffering and contain operational constraint and limitations #therefor using pseudo steady state method may be capable to estimate the amount of nitrogen volume in shorter time and calculations# comparing method differences for nitrogen consumption is calculated to be about 5% #since the transient time dependent flow simulator and pseudo steady state method compared with real operation to estimate transient disturbance caused by fluid properties changes#
|
کلیدواژه
|
Coiled Tubing ,Unloading ,Nitrogen Lift ,Well Intervention ,Two Phase Flow ,Sludge Removal
|
آدرس
|
International Petro Offshore Niam Kish, Iran, Amir Kabir University Of Technology(Tehran Polytechnic), Iran, Amir Kabir University Of Technology(Tehran Polytechnic), Iran
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|