Yintoni isakhiwo kunye nomgaqo wokusebenza wevalvu yokugqitha isixhobo sokugrumba?

Ivalvu yokugqitha isixhobo sokugrumba yivalvu yokhuseleko yokuxhasa inkqubo yokujikeleza kwegazi. Xa umlomo we-drill bit nozzle uvaliwe ngenxa yezizathu ezahlukeneyo kwaye umthombo awukwazi ukubulawa, ukuvula ivalvu yokugqitha isixhobo sokugrumba kunokubuyisela ukujikeleza kolwelo lokugrumba okuqhelekileyo kwaye kuqhubeke. Kwimisebenzi efana nokubulala umthombo, phantsi kweemeko eziqhelekileyo, ngaphambi kokugrumba umaleko weoyile negesi, ivalvu yokugqitha isixhobo sokugrumba iqhagamshelwe kwindawo emiselweyo yomtya wokugrumba.

1) Ulwakhiwo lwevalvu yokugqitha isixhobo sokugrumba

Umfanekiso ongasentla ngumzobo wolwakhiwo lwevalvu yesixhobo sokugrumba. Iquka umzimba wevalvu, indibano yesitulo sevalvu esityibilikayo, umngxuma we-bypass, ibhola yentsimbi, iphini, iringi yokutywina yohlobo lwe-“O”, njl.

2) Umgaqo wokusebenza wevalvu yokugrumba isixhobo sokugrumba

Nje ukuba kufunyaniswe ukuba umngxuma wamanzi we-drill bit uvaliwe kwaye awunakuvulwa, susa i-kelly uze uyiphose ibhola, uze uyidibanise i-kelly ukuze ibhola iwele kwisihlalo se-drill tool bypass valve. Emva kokupompa ngokuhambisa okuncinci, lo gama nje uxinzelelo lwepompo lunyuka ukuya kuthi ga Xa uxinzelelo lufikelela kwixabiso elithile, iphini esisigxina iya kunqunyulwa, nto leyo ebangela ukuba isihlalo sevalvu siye ezantsi de umngxuma we-bypass uvuleke ngokupheleleyo. Uxinzelelo lwepompo luya kwehla, ngaloo ndlela kusekwe itshaneli entsha yokujikeleza, kwaye umsebenzi wokwakha unokuqala.

3) Ukusetyenziswa kwevalvu yokudlula isixhobo sokugrumba

(1) Ukuze kugcinwe ulwelo lokugrumba kwimingxuma engaphantsi komhlaba lucocekile, ivalvu ye-bypass kufuneka ivulwe kwangaphambili ukuthintela ukuba umngxuma wamanzi we-drill bit ungavaleki.

(2) Ibhola yentsimbi yevalvu ye-bypass kufuneka ilungiswe kwaye ibekwe ngaphambi kokuba isetyenziswe ukuze ifikeleleke ngexesha elifanelekileyo xa kufuneka.

(3) Ukuze kuqinisekiswe ukuba umngxuma otyibilikayo womngxuma odlulayo wevalvu efunekayo yokudlula unokuvulwa kakuhle, kucetyiswa ngokubanzi ukuba ivalvu yokudlula ifakwe phakathi kwekhola yokubhola kunye nombhobho wokubhola okanye i-30 ukuya kwi-70m ukusuka kwivalvu yokujonga. Iivalvu zokudlula zemithombo ethe tye kunye nemithombo ephambukile kakhulu zifakelwe kwizixhobo zokubhola kwicandelo lemithombo eliphakathi kwama-50° ukuya kuma-70°.

(4) Ivalvu yokudlula isixhobo sokugrumba kufuneka ilawulwe ngokwezixhobo ezikhethekileyo zokungena equleni. Kufuneka kwenziwe ikhadi lokurekhoda ukuze kubhalwe ngokweenkcukacha ixesha lokusetyenziswa komngxuma kunye nezinye iiparameter ezifanelekileyo. Ngaphambi komsebenzi ngamnye wokugrumba, iingcali kunye nabaqhubi bemigodi baya kujonga ukuba kukho ukuvaleka, ukuvuza kunye nokuvuza. Ukungasebenzi kakuhle kwesitywina, njl.njl.