I-PDC NOMA I-PCD DRILL BIT? UYINI UMEHLUKO?
I-PDC drill bit isho i-Polycrystalline Diamond Cutter core bit
Imithombo yakuqala kwakuyimithombo yamanzi, imigodi engashoni embiwa ngesandla ezindaweni lapho itafula lamanzi lalisondela phezulu, ngokuvamile elinezindonga zamatshe noma zokhuni ezibekwe eceleni.
I-PDC yenziwa ngokuhlanganisa ezinye izingqimba zamadayimane e-polycrystalline (PCD) nongqimba lwe-carbide liner enosimende ezingeni lokushisa eliphezulu kanye nomfutho ophezulu.
Ama-PDC aphakathi kwezinto ezisebenza kanzima zedayimane eziqinile.
I-PCD isho nje i-Polycrystalline Diamond : I-PCD ivamise ukwenziwa ngokufaka amakristalu amaningi edayimane anosayizi owodwa omncane kumazinga okushisa aphezulu kanye nengcindezi ephezulu. I-PCD inokuqina okuhle kokuphuka kanye nokuzinza okuhle kwe-thermal, futhi isetshenziselwa ukwenza izingcezu zokubhola ze-geological.
I-PDC inezinzuzo zokumelana nokugqokwa okuphezulu kwedayimane nokuqina okuhle kwe-carbide.
Sihlinzeka ngamabhithi okubhola e-PDC enziwe ngezinhlobonhlobo zezisiki ezinomumo noma ama-polycrystalline diamond compacts (PDC) aboshwe emzimbeni.
Ama-PDC Cutters enziwe nge-carbide substrate kanye ne-diamond grit. Ukushisa okuphezulu okungamadigri angu-2800 kanye nokucindezela okuphezulu okucishe kube ngu-1,000,000 psi kwakha i-compact. Ingxubevange ye-cobalt nayo ikhona futhi isebenza njenge-catalyst yenqubo ye-sintering. I-cobalt isiza ukubopha i-carbide nedayimane.
Njengomthetho ojwayelekile, abasiki abakhulu (19mm kuya ku-25mm) banolaka kunabasiki abancane. Kodwa-ke, bangase bakhulise ukushintshashintsha kwe-torque.
Abasiki abancane (8mm, 10mm, 13mm kanye no-16mm) baboniswe ukuthi babhoboza ku-ROP ephakeme kunabasiki abakhulu kwezinye izinhlelo zokusebenza. Esinye sezicelo ezinjalo yi-limestone njengesibonelo.
Ukwengeza, abasiki abancane bakhiqiza ama-cuttings amancane kuyilapho abasiki abakhulu bekhiqiza ama-cuttings amakhulu. Ukusikwa okukhulu kungase kubangele izinkinga ngokuhlanza imbobo uma uketshezi lokumba lungakwazi ukuthwala okusikiwe phezulu.
(1) noma (2) Okuthambile futhi okuthambile okunamathelayo-Ukwakheka okubholaka kakhulu njengobumba, i-marl, i-gumbo nezihlabathi ezingahlanganisiwe.
(3) Izihlabathi ezinamandla ezicindezelayo ezithambile-maphakathi-Phansi, ama-shale nama-anhydrite anezendlalelo eziqinile ezixubile.
(4) Isihlabathi esicindezelayo esiphakathi nendawo esimaphakathi, ushoki, i-anhydrite kanye ne-shale.
(6) Amandla okucindezela amaphakathi aqinile-Aphezulu anesanti engacijile, i-shale, i-lime ne-anhydrite.
(7) Amandla okucindezela Okuqinile Okuphakeme anezingqimba ezicijile zesihlabathi noma i-siltstone.
(8) Ukwakheka okuminyene ngokwedlulele nokucijile njenge-quartzite ne-volcanic rock.
PDC UKUSIKA ISAKHIWO
Amabhithi e-pdc athambile kakhulu (1) ukuya kokumaphakathi (4) anosayizi owodwa ovelele wesisiki se-PDC. Isakhiwo sokusika se-PDC sichazwa ngale ndlela elandelayo:
2 - le bhithi inabasiki abaningi abangu-19mm
3 - le bhithi inabasiki abaningi abangu-13 mm
4 - le bits ngokuvamile inabasiki abangu-8 mm
Idatha ye-PDC
Isikhathi sokuthumela: Aug-31-2022