Izisekelo Zokubhoboza Ukujikeleza Okujikelezayo
Ukubhoboza okuqondile akuyona into entsha. Abantu babhoboza imithombo eminyakeni engaphezu kuka-8,000 eyedlule ukuze bathole amanzi angaphansi komhlaba ezindaweni ezishisayo nezomile, hhayi ngama-PDC bits kanye nama-mud motors njengoba senza namuhla.
Kunezinto eziningi okufanele uzicabangele lapho ukhetha indlela yokubhoboza. Lesi sitatimende siyiqiniso ikakhulukazi uma ubhoboza ukuze uhlole noma ulawule izinga. Iningi labakhi benkontileka kanye nonjiniyela bephethiloli bavame ukukhetha ukubhoboza okujikelezayo ngoba kunikeza izinzuzo eziningi kunezinye izindlela zokubhoboza.
Ngaphambi kokugqamisa izinzuzo zokubhoboza ukujikeleza kwegazi okungemuva, ake sichaze ukuthi kuyini ukuze uthole isithombe esicacile.
Kuyini Ukubhoboza Okujikelezayo Okubuyela Emuva?
Ukubhoboza ngokujikeleza okungemuva kuyindlela yokubhoboza esebenzisa amabhithi e-PDC okujikeleza okuphambene, kanye nezinduku ezinezindonga ezimbili ukuze kufezwe ukubhoboza nokuqoqwa kwamasampula. Udonga lwangaphandle lunamapayipi angaphakathi avumela ukuthi izingcezu zibuyiselwe ebusweni njengoba inqubo yokubhoboza iqhubeka.
Ukujikeleza kwe-reverse kusavumela ukunamatheliswa kwezivuli zemigodi kodwa kuhlukile ekubholeni idayimane ngoba kuqoqa izingcezu zamatshe esikhundleni senhliziyo yedwala. I-drill isebenzisa ama-bits akhethekile okujikeleza kwe-reverse aqhutshwa yi-piston ephindaphindayo enomoya noma isando.
Lezi zingcezu zokubhoboza ezijikelezayo zenziwe nge-tungsten, insimbi, noma inhlanganisela yazo zombili ngoba ziqine ngokwanele ukusika nokuchoboza idwala eliqinile kakhulu. Ngokuhamba kwalo nge-piston, isando singasusa idwala elichotshoziwe, elibe selithunyelwa phezulu ngomoya ocindezelwe. Umoya ushaya phansi kwe-annulus. Lokhu kudala ukushintsha kwengcindezi okuholela ekujikelezeni okuphambene, okudlulisa izingcezu phezulu kwepayipi.
Ukumba ukujikeleza kwegazi okungemuva kuhle kakhulu ekuthatheni amasampula ezinto zamadwala angaphansi komhlaba ukuze kuhlaziywe ukuhlukaniswa kwezindawo kanye nezinjongo zobunjiniyela besisekelo.
Manje njengoba usuyazi ukuthi kuyini, ake sibheke ezinye zezinzuzo zokubhoboza ukujikeleza kwegazi okungemuva.
Iwusizo Ekutholeni Amasampula Angangcoliswanga
Ukubhoboza ngokujikeleza kwegazi okungemuva kususa noma yikuphi ukungcoliswa okuphambene kwezicucu zamadwala lapho kuthunyelwa endaweni engaphezulu, njengoba izicucu zihamba ngepayipi elingaphakathi elivalekile elinesikhala esisodwa kuphela endaweni lapho isampula iqoqwa khona. Ngakho-ke, ungaqoqa inani elikhulu lamasampula asezingeni eliphezulu ukuze ahlaziywe.
Amanani Okungenela Amangalisayo
Ama-bits okujikeleza akhethekile angemuva aqine kakhulu kune-bits yokuqeda evamile ngenxa yezihloko ze-tungsten-steel composite. Ama-drill okujikeleza angemuva asebenza ngokushesha futhi athola ama-cuttings ngesikhathi esirekhodiwe. Ijubane lapho ama-cuttings edluliselwa khona ebusweni lingabonakala kalula kumamitha angu-250 ngomzuzwana.
Ukuguquguquka Ezimweni Ezimbi
Ukubhoboza ngokujikeleza kwe-reverse akuyona inqubo eyinkimbinkimbi futhi akudingi amanzi amaningi. Lesi sici senza ukubhoboza ngokujikeleza kwe-reverse kube kuhle ngisho nasezindaweni lapho amanzi entuleka khona njengezindawo ezinkulu zasemaphandleni noma ezindaweni ezomile kancane.
Okungabizi Kancane
Ukubhola ngokujikeleza okungemuva kuyabiza kakhulu, ikakhulukazi uma kuqhathaniswa nokubhola ngedayimane. Hhayi nje ngenxa yezindleko eziphansi zokusebenza, kodwa futhi nangenxa yesikhathi esifushane esithathayo ukuqedela ukubhola. Sekukonke, ukubhola ngokujikeleza okungemuva kungabiza imali engaphansi ngo-40% kunokubhola okuvamile. Uma ubhoboza ezindaweni ezinezindawo ezimagebhugebhu, ukusebenza kahle kwezindleko kungaphindeka kabili.
Ukujikeleza Okuphambene Kokulawula Ibanga
Ikhwalithi yamasampula atholiwe ibaluleke kakhulu kunoma yiluphi uhlelo lokuhlola ukuze kwenziwe ukuhlela okulungile kwezimayini noma ukubekwa kweziqhumane. Ukulawulwa kwebanga yilokho okusetshenziselwa ukuchaza amabhlogo kanye namazinga ensimbi. Ukubhoboza ukujikeleza kwegazi okungemuva kuhle kakhulu ekulawuleni izinga ngoba:
- Kudinga ukuphathwa okuncane kunezinye izindlela
- Amasampula atholiwe awanazo izinto ezingcolisayo
- Isikhathi sokujika esisheshayo
- Amasampula atholakele angayiswa ngqo elabhorethri ukuze ahlaziywe
Isici esibaluleke kakhulu kunoma yimuphi umsebenzi wokubhoboza ukujikeleza okuphambene yizicucu zesampula. Izindlela eziningi zingasetshenziswa ekubuyiseleni isampula, kodwa umgomo oyinhloko ukuthola amasampula ekhwalithi amaningi ngangokunokwenzeka ngesikhathi esifushane kakhulu.
Uma udinga noma yiziphi izinsizakalo zokubhoboza i-reverse circulation, khumbula ukufuna ochwepheshe abanelayisensi kuphela abaziyo indlela yabo yokubhoboza i-reverse circulation futhi abanolwazi oluhle ngezinqubo ezahlukene. Cela ukuthi basebenzise kuphela ikhwalithi ephezulu eqinisekisiwe.amabhithi e-PDC okujikeleza okuphambeneukugwema noma yikuphi ukubambezeleka okubangelwa yizingcezu zokubhoboza eziphukile. Okokugcina, qiniseka njalo ukuthi inqubo yokubhoboza ihambisana nezindinganiso zemvelo ezibekiwe.
Isikhathi sokuthunyelwe: Mashi-28-2023