Oko kubizwa ngokuba yi-reverse circulation kuthetha ukuba xa isixhobo sokugrumba sisebenza, idiski ejikelezayo iqhuba i-drill bit ekupheleni kombhobho wokugrumba ukuze isike kwaye iphule ilitye nomhlaba emngxunyeni. Ulwelo lokugrumba lungena ezantsi komngxuma lusuka kumsantsa ophakathi kombhobho wokugrumba nodonga lomngxuma, lupholise i-drill bit, luthwale ilitye elisikiweyo kunye ne-soil drilling slag, kwaye lubuyele emhlabeni lusuka kumngxuma ongaphakathi wombhobho wokugrumba. Kwangaxeshanye, ulwelo lokugrumba lubuyela emngxunyeni ukuze lwenze umjikelezo. Ngenxa yokuba umngxuma ongaphakathi wombhobho wokugrumba umncinci kakhulu kunobubanzi bomngxuma, isantya sokunyuka kwamanzi odaka kumbhobho wokugrumba sikhawuleza kakhulu kuneso sokujikeleza okuhle. Asingomanzi acocekileyo kuphela, kodwa ne-drilling slag inokuziswa phezulu kombhobho wokugrumba kwaye ihambe iye kwitanki yokudaka kodaka. Udaka lunokuphinda lusetyenziswe emva kokucocwa.
Xa kuthelekiswa nokujikeleza kakuhle, ukujikeleza okungasemva kuneengenelo zesantya sokugrumba esikhawulezayo kakhulu, udaka oluncinci olufunekayo, amandla amancinci asetyenziswa yitafile ejikelezayo, ixesha lokucoca imingxunya elikhawulezayo, kunye nokusetyenziswa kweebhithi ezikhethekileyo ukugrumba nokumba amatye.
Ukubhola ngokujikeleza okungasemva kunokwahlulwahlulwa kube kukujikeleza ngokujikeleza okungasemva kwegesi, ukufunxa ipompo kunye nokujikeleza ngokujikeleza okungasemva kwejethi ngokwendlela yokuhambisa ejikelezayo yokuhambisa ulwelo, umthombo wamandla kunye nomgaqo wokusebenza. Ukubhola ngokujikeleza ngokujikeleza okungasemva kwegesi kukwaziwa ngokuba kukubhola ngokujikeleza ngoxinzelelo lomoya, kwaye umgaqo wayo wokusebenza ngolu hlobo lulandelayo:
Faka umbhobho wokugrumba emngxunyeni wokugrumba ozele lulwelo lokufunxa, qhuba intonga yokudlulisa umoya eqinisiweyo kunye ne-drill bit ukuze ujikeleze kwaye usike ilitye nomhlaba ngokujikeleza kwetafile ejikelezayo, fafaza umoya ocinezelweyo kwi-spray nozzle esezantsi kombhobho wokugrumba, kwaye wenze umxube wegesi yamanzi esanti yodaka olukhaphukhaphu kunamanzi kunye nomhlaba osikiweyo kunye nesanti kumbhobho wokugrumba. Ngenxa yesenzo esidibeneyo somahluko woxinzelelo ngaphakathi nangaphandle kombhobho wokugrumba kunye noxinzelelo lomoya, umxube wegesi yamanzi esanti yodaka kunye nolwelo lokufunxa luyanyuka kunye kwaye lukhutshelwa emngxunyeni wodaka osemhlabeni okanye kwitanki yokugcina amanzi ngepayipi yoxinzelelo. Umhlaba, isanti, ilitye elimdaka kunye neengceba zamatye zihlala emngxunyeni wodaka, kwaye ulwelo lokufunxa lungena emngxunyeni.
Ixesha lokuthumela: Septemba-17-2021