Published February 2024, Pg. 43-48

Section: Oil and gas preparing and transportation

UOT: 620.92

DOI: 10.37474/0365-8554/2024-02-43-48

Hydrate formation due to moisture, occuring by mixing natural gas streams of dewatering different degrees

F.Q. Seyfiyev PhD in Tech. Sc. - Azerbaijan State University of Oil and Industry

Sh.А. Baghirov - Azerbaijan State University of Oil and Industry

U.R. Taghizadeh - Azerbaijan State University of Oil and Industry

M.E. Harbizadeh - Azerbaijan State University of Oil and Industry

The key problem during transporting natural gas through gas pipelines is to ensure reliable, safe transportation and supply of gas to consumers. Reliable operation of the main gas pipeline depends on transported gas quality. Under production conditions, gas is saturated with moisture vapor to an equilibrium state, and when thermodynamic conditions (pressure, temperature) change, its condensation occurs. Due to the heterogeneity of the fields, the problem of gas quality control is the key reliability criterion, especially such as the moisture content in the gas. The main complication is the formation of hydrate plugs, which lead to an increase in hydraulic resistance and a decrease in pipeline capacity, which contributes to the occurrence of emergency situations. Therefore, before supplying natural gas to main gas pipelines, the gas is dried to its dew point, which prevents condensation of water from the gas.

References:

1. Makogon Yu.F. Gidraty prirodnykh gazov. – M.: Nedra, 1974, 208 s.

2. Mirzadzhanzade A.Kh., Kuznetsov O.L., Basniev K.S., Aliev Z.S. Osnovy tekhnologii dobichi gaza. – M.: OAO “Izd-vo ”Nedra”, 2003, 880 s.

3. Abdul Ameen, Tharakan Thadil, Sara Amani, Mahmood Amani. (2022). Preventing the Formation of Methane Hydrates in Natural Gas Transmission Pipelines–A Comprehensive Review. 2(3):98-107.

4. Iskandarov E.Kh. Determining of primary hidrate formation in subsea gas pipelines / E.Kh. Iskandarov, A.N. Baghirov, Sh.A. Baghirov // International Scientific-Practical Conference KhazarOilGasField (İSPC KOGF-2022), Proceeding of Scientific Papers. 6-7 Desember 2022, Baku, Azerbaijan. Scientific Research İnstitute “Geotechnological Problems of Oil, Gas and Chemistry”, pp. 22-27.

5. ISO 18453:2004. Natural Gas. Correlation Between Water Content and Water Dew Point [Elektronnyy resurs]. Rezhim dostupa: www.iso.org/ru/standard/31799.html (data obrashcheniya: 11.01.2018)

6. Slobodchikov K.Yu. Metod formirovaniya raschetnykh primerov dlya dispetcherskikh zadach transporta gaza / Gazovaya promyshlennost, 2018, № 3, s. 78-86.

7. Istomin V.A., Kvon V.G. Preduprezhdenie i likvidatsiya gazovykh gidratov v sistemakh dobichi gaza. – M.: OOO “IRTS Gazprom”, 2004, 506 s.

8. Istomin V.A, Yakushev V.S. Gazovye gidraty v prirodnykh usloviyakh. – M.: Nedra, 1992, 236 s

9. Zhou S., Chen X., He C., Wang S., Zhao S., Lv X. Experimental Study on Hydrate Formation and Flow Characteristics with High Water Cuts. Energies 2018, № 11, 2610.