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Causes of oilfield equipment corrosion of Uzenskoye field wells and ways to protect against it

Authors: R.K. Veliyeva (Oil and Gas Research and Design Institute, SOCAR, the Republic of Azerbaijan, Baku), M.A. Bisenova (KazNIPImunaygaz AO, the Republic of Kazakhstan, Aktau)

Key words: oilfield equipment, sealant, inhibitor-bactericide.

The main causes of corrosion damages of oilfield equipment of Uzenskoye field are interpreted. The need for protection and sealing of threaded connections and oil-well tubing couplings is shown. An aggressiveness of formation and sewage waters of Uzenskoye field wells are studied. Chemical and microbiological analyzes of waters, accompanying the produced oil, testify the high corrosion activity. It is shown that the chemicals, used at the Uzenskoye field to prevent corrosion processes, have mainly bactericidal properties. The inhibitors -bactericides of composite character are recommended to protect against microbiological, general and pitting corrosion.
References
1. Rozenfel'd I.L. Ingibitory korrozii (Corrosion inhibitors), Moscow:
Khimiya Publ., 1977, 300 p.
2. Dorofeev A.G., Paryshev Yu.N., Rogaza M.M. et al., Obzornaya informatsiya.
Seriya Korroziya i zashchita v neftegazovoy promyshlennosti,
Moscow:Publ. of VNIIOENG, 1986, V. 5, pp. 3-6.
3. Proskurkin E.V., Sukhomlin A.I., Shanilov V.A. et al., Neftyanoe
khozyaystvo – Oil Industry, 1998, no. 9, pp. 81-83.
4. Velieva R.K., Gamidova N.S., Azimov N.A. et al., Neftyanoe
khozyaystvo – Oil Industry, 2012, no. 7, pp. 112-115.
5. Vagapov R.K., Kolikovskiy R.V., Kuznetsov Yu.I., Korroziya: materialy,
zashchita – Corrosion: Materials, Protection, 2010, no. 10, pp. 16-23.

Key words: oilfield equipment, sealant, inhibitor-bactericide.

The main causes of corrosion damages of oilfield equipment of Uzenskoye field are interpreted. The need for protection and sealing of threaded connections and oil-well tubing couplings is shown. An aggressiveness of formation and sewage waters of Uzenskoye field wells are studied. Chemical and microbiological analyzes of waters, accompanying the produced oil, testify the high corrosion activity. It is shown that the chemicals, used at the Uzenskoye field to prevent corrosion processes, have mainly bactericidal properties. The inhibitors -bactericides of composite character are recommended to protect against microbiological, general and pitting corrosion.
References
1. Rozenfel'd I.L. Ingibitory korrozii (Corrosion inhibitors), Moscow:
Khimiya Publ., 1977, 300 p.
2. Dorofeev A.G., Paryshev Yu.N., Rogaza M.M. et al., Obzornaya informatsiya.
Seriya Korroziya i zashchita v neftegazovoy promyshlennosti,
Moscow:Publ. of VNIIOENG, 1986, V. 5, pp. 3-6.
3. Proskurkin E.V., Sukhomlin A.I., Shanilov V.A. et al., Neftyanoe
khozyaystvo – Oil Industry, 1998, no. 9, pp. 81-83.
4. Velieva R.K., Gamidova N.S., Azimov N.A. et al., Neftyanoe
khozyaystvo – Oil Industry, 2012, no. 7, pp. 112-115.
5. Vagapov R.K., Kolikovskiy R.V., Kuznetsov Yu.I., Korroziya: materialy,
zashchita – Corrosion: Materials, Protection, 2010, no. 10, pp. 16-23.


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