At the facilities of Rosneft Oil Company, the content of hydrogen sulfide (H2S) in the produced fluid is most typical for oil and gas fields in the Volga-Ural region. In the presence of hydrogen sulfide the casing pipes in the columns are affected by the sulfide stress corrosion cracking. In such cases, casing pipes in a hydrogen sulfide-resistant design are used to prevent the destruction of the well construction. However, there is experience in operating casing pipes of conventional strength groups in the presence of hydrogen sulfide in the formation fluid at the facilities of Rosneft Oil Company in the Volga-Ural region. This article presents the results of replicating previously completed research work on the development of technical requirements for casing pipes used in the presence of hydrogen sulfide in the formation fluid. The results of the analysis of the operating conditions of casing pipes at well construction sites of Samaraneftegaz JSC are presented, forming additional technical requirements and confirming them under laboratory testing conditions of samples from seamless casing pipes of conventional strength groups for sulfide stress corrosion cracking in operational conditions. The results of the work will be used in the design of well construction at the facilities of Rosneft Oil Company in the Volga-Ural region.
References
1. Fedoseev D.A., Susoev A.S., Korovin I.Yu. et al., Development of technical requirements for casing pipes used in the presence of hydrogen sulfide in the formation fluid (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2023, no. 5, pp. 123-126, DOI: https://doi.org/10.24887/0028-2448-2023-5-123-126
2. GOST R 53679-2009 / ISO 15156-1:2001. Petroleum and natural gas industries – Materials for use in H2S-containing environments in oil and gas production – Part 1: General principles for selection of cracking-resistant materials (MOD).
3. GOST R 53678-2009 / ISO 15156-2:2009. Petroleum and natural gas industries – Materials for use in H2S-containing environments in oil and gas production – Part 2: Cracking-resistant carbon and low-alloy steels, and the use of cast irons (MOD)
4. GOST 31446-2017 / ISO 11960:2014, Petroleum and natural gas industries. Steel pipes for use as casing or tubing for wells, MOD.
5. NACE TM 0177-2016. Laboratory testing of metals for resistance to specific forms of environmental cracking H2S environments.
6. Instruktsiya po raschetu obsadnykh kolonn neftyanykh i gazovykh skvazhin (Instructions for calculating casing columns for oil and gas wells), Moscow: Publ. of VNIITneft’, 1997
