Nchekwa akụrụngwa: Inye kemịkalụ iji gbochie mmebi

Corrosion bụ usoro ebumpụta ụwa, nke a na-eji nwayọọ nwayọọ na-emebi ígwè site na usoro kemịkalụ ma ọ bụ electrochemical mgbe a na-akpọtụrụ gburugburu ya.Isi mmalite nke corrosion bụ pH, CO2, H2S, chlorides, oxygen na nje bacteria.A na-akpọ mmanụ ma ọ bụ gas "utoojoo" mgbe ntinye nke hydrosulfides, H2S, dị elu karịa emekarị.Oxygen na-enwe nnukwu nsogbu na olulu mmiri injection, EOR.Ugbua oke mkpokọta dị ala na-ebute ọnụ ọgụgụ corrosion dị elu.N'okwu a, a na-eji ikuku oxygen eme ihe.

Bakteria nwere ike itolite n'ime ọkpọkọ na tankị n'okpuru ọnọdụ anaerobic, nke na-ebute oke H2S.Ntugharị bụ ihe si na nke a pụta ma nwee ike ịka njọ.Mwelite nje bacteria na-emekarị na ngwa ngwa dị ala.Ihe ndị ọzọ na-enye aka maka corrosion bụ okpomọkụ, abrasion, nrụgide, ọsọ ọsọ na ọnụnọ nke siri ike.

Anyị maara ụdị corrosion ndị a na-ahụkarị:

1. Mpaghara corrosion: pitting, crevice corrosion, filiform corrosion

2. Galvanic corrosion

3. General ọgụ corrosion

4. Nkwụrụ nke na-enyere aka, FAC

5. Intergranular corrosion

6. De-alloying

7. Mgbawa gburugburu ebe obibi: nchekasị, ike ọgwụgwụ, H2-ebute, mmiri mmiri metal embrittlement

8. Fretting corrosion

9. Nnukwu okpomọkụ corrosion

Maka ịchịkwa corrosion, usoro ndị a dị mkpa maka:

● Kọwaa kpọmkwem n'ịhọrọ ihe ziri ezi.Ọkachamara metallurgic na-akọwapụta ọla kacha mma iji.

● Ọzọkwa mkpuchi na eserese bụ isiokwu dị mkpa ịhọrọ nke ọma.

● Ịmalite mmepụta iji mụbaa ma ọ bụ ibelata ọsọ na ọkpọkọ.

● Ọ bụrụ na ụmụ irighiri ihe dị na mmiri mmiri, mbelata nwere ike ịka mma maka oge ndụ nke ngwa na ọkpọkọ.

● Ịchịkwa pH, ibelata ọnụọgụ chloride, ikpochapụ ikuku oxygen na nje bacteria na ibelata ọnụego metal oxidation na ọgwụ injections.

● Ngwakọta kemịkalụ dị irè na nke kachasị mma iji dozie nrụgide dị na pipeline ma ọ bụ arịa ebe mmiri kwesịrị ịbanye.


Oge nzipu: Eprel-27-2022