Kuhlanganisani ukusebenza kwe-downhole?

07

ukulungiswa kwebhokisi

Ezigabeni ezimaphakathi nezakamuva zokuxhashazwa kwenkundla kawoyela, ngokwandiswa kwesikhathi sokukhiqiza, inani lemisebenzi kanye nokweqiwa komsebenzi liyakhula, futhi umonakalo we-casing uzokwenzeka ngokulandelana. Ngemuva kokuthi i-casing yonakalisiwe, kufanele ilungiswe ngesikhathi, kungenjalo izoholela ezingozini zemigodi.

1. Ukuhlolwa nokukalwa komonakalo webhokisi

Okuqukethwe okuyinhloko kokuhlolwa kwe-casing yilezi: ukuguqulwa kobubanzi bangaphakathi be-casing, ikhwalithi nokuqina kodonga lwe-casing, isimo sodonga lwangaphakathi lwe-casing, njll. Ngaphezu kwalokho, hlola futhi unqume indawo ye-casing ikhola ye-casing, njll.

2. Ukulungiswa kwe-casing ekhubazekile

I-casing ekhubazekile ilungiswa ngokuhlinzwa kwepulasitiki.

⑴Idivayisi yepulasitiki emise okwepheya (ephinde ibizwe nge-tube expander)

I-expander yeshubhu yehliselwa engxenyeni yomthombo okhubazekile, futhi ingxenye ekhubazekile inwetshwa kancane kancane kuye ngamandla aqhumayo wethuluzi lokumba. Ibanga elingemuva elinganwetshwa isikhathi ngasinye lingu-1-2 mm kuphela, futhi inani lokushintshwa kwamathuluzi likhulu.

⑵ I-casing shaper

Leli thuluzi lisetshenziswa kakhulu futhi lingumenzi ongcono.

I-casing shaper iyithuluzi elikhethekile elisetshenziselwa ukulungisa ukuguquguquka kwe-casing emthonjeni, njengokwenza isicaba nokucindezeleka, ukuze kubuyiselwe esimweni esiseduze nokujwayelekile.

I-casing shaper iqukethe i-eccentric shaft, lapho kukhona ama-roller aphezulu, aphakathi naphansi kanye nekhanda le-cone, kanye namabhola namapulaki okulungisa ikhanda le-cone. Beka leli thuluzi engxenyeni ekhubazekile ye-casing, uyijikeleze futhi usebenzise ingcindezi efanele, uphoqelele ikhanda le-cone kanye ne-roller ukuze ucindezele udonga lwamapayipi okhubazekile we-casing ngaphandle ngamandla amakhulu aseceleni ukuze alenze lifinyelele ububanzi obuvamile kanye nendilinga.

I-Casing scraper: I-casing scraper isetshenziselwa ukususa noma yikuphi ukufakwa kwemali, ukungalingani noma ama-burrs ngaphakathi kwebhokisi lomthombo wamafutha, ukuze kususwe izithiyo ekusebenzeni kwesikhathi esizayo.