I-PDC OKANYE I-PCD DRILL BIT? YINTONI UMAHLUKO?
I-PDC drill bit ithetha i-Polycrystalline Diamond Cutter core bit
Amaqula okuqala yayingamaqula amanzi, imingxuma enganzulu eyayimbiwa ngesandla kwiindawo apho itafile yamanzi yayisondela khona kumphezulu, idla ngokuba neendonga ezenziwe ngomthi okanye ezenziwe ngomthi ezigqunywe ngumhlaba.
Ii-PDC zenziwa ngokudibanisa ezinye iileya zeedayimani ze-polycrystalline (PCD) kunye neleya ye-carbide liner eqinisiweyo kubushushu obuphezulu kunye noxinzelelo oluphezulu.
Ii-PDC ziphakathi kwezona zixhobo zedayimani zibalaseleyo.
I-PCD ithetha nje iPolycrystalline Diamond: I-PCD idla ngokwenziwa ngokungcolisa iikristale ezininzi zedayimani enye ezinobukhulu obuncinci kubushushu obuphezulu kunye noxinzelelo oluphezulu. I-PCD inokuqina okuhle kokuqhekeka kunye nozinzo oluhle lobushushu, kwaye isetyenziswa ekwenzeni ii-geological drill bits.
I-PDC ineengenelo zokuba idayimani ayigugi kakhulu ngenxa yokuba iqine kakuhle kwi-carbide.
Sinikezela ngee-PDC drill bits ezenziwe ngeendidi ezahlukeneyo zee-cutters ezimile okwemilo okanye ii-polycrystalline diamond compacts (PDC) ezifakwe kwi-body.
Izicucu zePDC zenziwe nge-carbide substrate kunye ne-diamond grit. Ubushushu obuphezulu obumalunga nama-2800 degrees kunye noxinzelelo oluphezulu olumalunga ne-1,000,000 psi zenza i-compact. I-cobalt alloy nayo ikhona kwaye isebenza njengesihluzi kwinkqubo yokusila. I-cobalt inceda ukubopha i-carbide kunye nedayimani.
Ngokwesiqhelo, ii-cutter ezinkulu (19mm ukuya kwi-25mm) zinamandla ngakumbi kunee-cutter ezincinci. Nangona kunjalo, zinokunyusa ukuguquguquka kwe-torque.
Kuye kwabonakala ukuba izixhobo zokusika ezincinci (8mm, 10mm, 13mm kunye ne-16mm) zigrumba nge-ROP ephezulu kunezixhobo zokusika ezinkulu kwezinye izicelo. Umzekelo, esinye sezicelo ezinjalo yi-limestone.
Ukongeza, izicucu ezincinci zivelisa izicucu ezincinci ngelixa izicucu ezinkulu zivelisa izicucu ezinkulu. Izicucu ezinkulu zinokubangela iingxaki ekucoceni imingxunya ukuba ulwelo lokugrumba alukwazi ukuthwala izicucu phezulu.
(1) okanye (2) Ithambile kwaye ithambile inamathela-Iindlela ezigotywa kakhulu ezifana nodongwe, i-marl, i-gumbo kunye nesanti ezingadibaniyo.
(3) I-Soft-medium-low compressive strength sands, shale kunye ne-anhydrites ezineeleya eziqinileyo ezixutyiweyo.
(4) Isanti, itshoko, i-anhydrite kunye ne-shale enamandla aphakathi naphakathi.
(6) Iqinile phakathi - Amandla aphezulu okucinezela kunye nesanti engabukhali okanye engabukhali kangako, i-shale, ilayimu kunye ne-anhydrite.
(7) Amandla okucinezela aqinileyo aphezulu kunye neengqimba ezibukhali zesanti okanye ilitye le-silt.
(8) Iindidi eziqinileyo kakhulu nezibukhali ezifana ne-quartzite kunye namatye entaba-mlilo.
ULWAKHIWO LOKUSIKA LWE-PDC
Iibhithi ze-pdc ezithambileyo kakhulu (1) ukuya kwephakathi (4) zinobukhulu obunye obuphambili bomsiki we-PDC. Ulwakhiwo lokusika lwe-PDC lubonakaliswa ngale ndlela ilandelayo:
2 – le ntwana inazo izicuthi ze-19mm uninzi lwazo
3 – le ntwana inabasiki abaninzi be-13 mm
4 – le ntwana inabasiki abaninzi be-8 mm
Iibhithi zePDC
Ixesha lokuthumela: Agasti-31-2022