Amathuba kawoyela negesi akhuphukayo okuthengiswa kwama-valve agxile ezinhlotsheni ezimbili eziyinhloko zezicelo: i-wellhead kanye nephayiphi. Eyokuqala ngokuvamile ilawulwa yi-API 6A Specification ye-Wellhead kanye ne-Christmas Tree Equipment, kanye neyokugcina yi-API 6D Specification ye-Pipeline kanye nama-Piping Valve.
Izinhlelo zokusebenza ze-Wellhead (API 6A)
Amathuba okusetshenziswa kwe-wellhead abikezelwa kabanzi ngokusekelwe ku-Baker Hughes Rig Count enikeza isilinganiso esihamba phambili embonini kawoyela negesi ephezulu. Lesi silinganiso saba sihle ngo-2017, yize cishe siseNyakatho Melika kuphela (bheka Ishadi 1). I-wellhead ejwayelekile ifaka ama-valve amahlanu noma ngaphezulu ahlangabezana ne-API Specification 6A. Lawa ma-valve ngokuvamile anosayizi omncane osukela ku-1” kuya ku-4” kuma-wellhead ase-onshore. Ama-valve angafaka i-master valve ephezulu nephansi yokuvala umthombo; i-kill wing valve yokwethula amakhemikhali ahlukahlukene okuthuthukisa ukugeleza, ukumelana nokugqwala, nezinye izinjongo; i-production wing valve yokuvala/ukuhlukanisa umthombo ohlelweni lwamapayipi; i-choke valve yokuguqula ukugeleza okuvela emthonjeni; kanye ne-swab valve phezulu kwenhlangano yesihlahla yokufinyelela okuqondile emgodini womthombo.Amavalvu ngokuvamile angohlobo lwesango noma lwebhola futhi akhethwa ikakhulukazi ukuvala ngokuqinile, ukumelana nokuguguleka kokugeleza, kanye nokumelana nokugqwala okungaba yinto ekhathaza kakhulu imikhiqizo yegesi emuncu noma igesi emuncu enokuqukethwe okuphezulu kwesalfure. Kufanele kuqashelwe ukuthi ingxoxo engenhla ayibandakanyi amavalvu angaphansi kolwandle angaphansi kwezimo zesevisi ezidinga kakhulu futhi asendleleni yokutakula emakethe ebambezelekile ngenxa yesisekelo sezindleko eziphezulu zokukhiqizwa kwemikhumbi engaphansi kolwandle.
Isikhathi sokuthunyelwe: Mashi-27-2018