PSI - Issue 36

Ye. Kryzhanivskyy et al. / Procedia Structural Integrity 36 (2022) 370–377 Ye. I. Kryzhanivskyy et al. / Structural Integrity Procedia 00 (2021) 000 – 000

376

7

The amount of carbon dioxide that will contain the pipeline can be determined from the equation:

*

P

P

2

T

d

 =

(15)

ср

ср

*

,

,

V

L

P

=

ст

CO

ср

4 P T

z

2

ст ср

where P ст , T ст – pressure, and temperature under standard conditions; P ср , T ср – mean values of temperature and pressure in the pipeline; z – compressibility factor of carbon dioxide. Considering the process of gas injection isothermal, we can assume that its average temperature in the pipeline is close to soil temperature. The average pressure in the pipeline is determined by the following condition:

 = L L

P x t dx 0 * 1 ( , ) ,

(16)

P

ср

where P ( x , t * ) – the nature of the pressure distribution along the length of the section for the time t * , which corresponds to the achievement of the maximum allowable pressure in the injection points. 5. Conclusions Analysing the time-dependent trends of carbon dioxide injection into a pipeline with a diameter of 1420 mm and a length of 1200 km, with a constant mass flow rate of 300 kg/s, it was found out that the injection process should be within the pressure value not higher than 3 MPa to ensure the absence of phase transformations of carbon dioxide, that is not preferable from the point of injection process reliability. The time for pipeline filling with carbon dioxide including interruptions for the purpose to balance the pressure across the pipeline takes about 114 hours for one injection point with 300 kg/s production rate, about 63 hours for two injection points with same production rate and about 34 hours for four same injections. Acknowledgements The research was implemented with the grant support of the National Research Fund of Ukraine (project № 2020.01/0417). References Chudyk, I., Poberezhny, L., Hrysanchuk, A., Poberezhna, L., 2019. Corrosion of drill pipes in high mineralized produced waters. Procedia Structural Integrity 16, 260-264. Doroshenko, Y., Zapukhliak, V., Poliarush, K., Stasiuk, R., Bagriy, S., 2019. Development of trenchless technology of reconstruction of pulling pig P pipeline communications. Eastern-European Journal of Enterprise Technologies 2(1)(98), 28 – 38. European Commission. (2020b). Powering a climate-neutral economy: An EU strategy for energy system integration. Brussels, 2020. URL: https://ec.europa.eu/energy/sites/ener/files/energy_system_integration_strategy_.pdf (accessed 10.2021) GTS Operator of Ukraine. URL: https://tsoua.com/ (accessed 10.2021). Grudz, V. Ya., Tymkiv, D.F., Mikhalkiv, V.B., Kostiv, V.V., 2009. Service and repair of gas pipelines. Ivano-Frankivsk: Lileya-NV. 712 p. Harkin, T., Filby, I., Sick, H., Manderson, D., Ashton, R., 2017. Development of a CO 2 specification for a CCS hub network. Energy Procedia 114, 6708-6720. Keith, W., 2013. Carbon capture and storage: Ukrainian prospects for industry and energy security. Oslo, Norway. 49 p. Khoma, M. S., Ivashkiv, V. R., Chuchman, M. R., Vasyliv, C. B., Ratska, N. B., Datsko, B. M., 2018. Corrosion cracking of carbon steels of a different structure in the hydrogen sulfide environment under static load. Procedia Structural Integrity 13, 2184-2189. Koornneef, J., Ramírez, A., Turkenburg, W., Faaij, A. , 2012. The environmental impact and risk assessment of CO 2 capture, transport and storage – An evaluation of the knowledge base. Progress in Energy and Combustion Science 38(1), 62-86. Kryzhanivs’kyi, E. I., Nykyforchyn, H. M. , 2011. Specific features of hydrogen-induced corrosion degradation of steels of gas and oil pipelines and oil storage reservoirs. Materials Science 47(2), 127-136. Kryzhanivskyy, Y., Poberezhny, L., Maruschak, P., Lyakh, M., Slobodyan, V., Zapukhliak, V., 2019. Influence of test temperature on impact toughness of X70 pipe steel welds. Procedia Structural Integrity 16, 237-244.