Izisekelo Zokubhola Okuhlehliswayo Kokujikeleza
Ukubhola okuqondile okuqondile akuyona into entsha.Abantu bamba imithombo eminyakeni engaphezu kuka-8,000 edlule ukuze bathole amanzi angaphansi komhlaba ezindaweni ezishisayo nezomile, hhayi ngezingcezu ze-PDC nezinjini zodaka njengoba senza namuhla.
Kunezinto eziningi okufanele uzicabangele lapho ukhetha indlela yokumba.Lesi sitatimende siyiqiniso ikakhulukazi uma umba ukuze uhlole noma ulawule ibanga.Osonkontileka abaningi nonjiniyela be-petroleum bavamise ukukhetha ukubhola ukuhlehla kwe-circulation ngoba kunikeza izinzuzo eziningi kunezinye izindlela zokumba.
Ngaphambi kokugqamisa izinzuzo zokubhoboza i-reverse circulation, ake sichaze ukuthi kuyini isithombe esicacile.
Kuyini I-Reverse Circulation Drilling?
I-reverse circulation drilling iyindlela yokumba esetshenziswayo reverse circulation PDC bits, kanye nezinduku ezinezindonga eziphindwe kabili ukuze kuzuzwe ukubhola nokuqoqwa kwesampula.Udonga lwangaphandle lunamashubhu angaphakathi avumela ukusika ukuthi kudluliselwe phezulu njengoba inqubo yokumba iqhubeka.
Ukujikeleziswa kwe-reverse kusavumela ukunamathiselwa kwezimbobo zokuvula kodwa kuyahluka ekubhojweni kwedayimane ngoba kuqoqa amatshe asikiwe esikhundleni se-rock core.I-drill isebenzisa izingcezu ezikhethekile zokuhlehla zokujikeleza ezishayelwa ipiston elibuyisela umoya noma isando.
Lezi zingcezu zokubhola ezijikelezayo zenziwe nge-tungsten, insimbi , noma inhlanganisela yakho kokubili ngenxa yokuthi ziqine ngokwanele ukusika nokuchoboza idwala eliqine kakhulu.Ngokunyakaziswa kwepiston, isando singasusa idwala elichotshoziwe, elibe selidluliselwa phezulu ngomoya ocindezelwe.Umoya uphephula i-annulus.Lokhu kudala ukushintsha kokucindezela okuholela ekujikelezweni okuphambene, okudlulisa ukusikwa phezulu kweshubhu.
I-reverse circulation drilling ilungile ekuthatheni isampula ye-subground rock ukuze kuhlaziywe i-stratification kanye nezinjongo zobunjiniyela besisekelo.
Manje njengoba usuyazi ukuthi kuyini, ake sibheke ezinye zezinzuzo zokubhoboza i-reverse.
Iwusizo Ukuthola Amasampula Angangcolisiwe
Ukumba i-reverse circulation kususa noma yikuphi ukungcoliswa okuphambana kokusikwa kwamadwala lapho kuhanjiswa phezulu, njengoba okusikiwe kuhamba ngeshubhu elingaphakathi elivalekile elinesikhala esisodwa kuphela phezulu lapho kuqoqwa khona isampula.Ngakho-ke, ungaqoqa inani elikhulu lamasampuli ekhwalithi ephezulu ukuze ahlaziywe.
Izilinganiso Zokungena Ezingakholeki
Izingcezu ezikhethekile zokuhlehla zokujikeleza zinamandla kakhulu kunezingcezu ezijwayelekile zokuqedela ngenxa yamathiphu ayinhlanganisela yensimbi ye-tungsten.Ama-reverse circulation drills asebenza ngamanani asheshayo futhi athole okusikiwe ngesikhathi esirekhodiwe.Isivinini lapho ama-cuttings abuyiselwa khona phezulu angabheka kalula kumamitha angu-250 ngomzuzwana.
Ukuhlukahluka Kwezimo Ezibi
I-reverse circulation drilling akuyona inqubo eyinkimbinkimbi futhi ayidingi amanzi amaningi.Lesi sici senza ukubhoboza okubuyela emuva kube kuhle ngisho nasezindaweni lapho amanzi eyindlala khona njengendawo esemaphandleni noma ezindaweni ezomile.
Izindleko Ezincane
Ukumba i-reverse circulation kubiza kakhulu, ikakhulukazi uma kuqhathaniswa nokumba idayimane.Hhayi nje ngenxa yezindleko ezincishisiwe zokusebenza, kodwa futhi ngenxa yesikhathi esifushane esithathayo ukuqedela ukubhoboza.Sekukonke, ukubhola ukuhlehla kwe-circulation kungabiza kuze kufike ku-40% ngaphansi kokumba okuvamile.Uma umba ezindaweni ezinezimo ezimbi, ukuphumelela kwezindleko kungase kuphindeke kabili.
I-Reverse Circulation for Grade Control
Izinga lamasampula atholiwe libaluleke kakhulu kunoma yiluphi uhlelo lokuhlola ukuze kwenziwe ukuhlelwa okufanele kwezimayini noma ukubekwa kweziqhumane.Ukulawulwa kwebanga yikho okusetshenziselwa ukuchaza amabhlogo namamaki ensimbi.I-reverse circulation drilling kuhle ekulawuleni ibanga ngoba:
- Kudinga ukuphathwa okuncane kunezinye izindlela
- Amasampula atholiwe awanakho noma yikuphi ukungcola
- Isikhathi sokushintsha ngokushesha
- Amasampula atholiwe angayiswa ngqo elebhu ukuze ahlaziywe
Isici esibaluleke kakhulu kunoma yimuphi umsebenzi wokumba i-reverse circulation ukusika amasampula.Izindlela eziningi zingasetshenziswa ukuthola kabusha isampula, kodwa okuhlosiwe okuyinhloko ukuthola amasampula ekhwalithi amaningi ngangokunokwenzeka ngesikhathi esifushane kakhulu.
Uma udinga noma yiziphi izinsiza zokumba i-reverse circulation drilling, khumbula ukufuna kuphela ochwepheshe abanamalayisense abayaziyo indlela yabo mayelana ne-reverse circulation drill futhi abazazi kahle izinqubo ezihlukahlukene.Cela ukuthi basebenzise kuphela ikhwalithi ephezulu eqinisekisiwereverse circulation PDC bitsukugwema noma yikuphi ukubambezeleka okubangelwa izingcezu zokubhoboza eziphukile.Okokugcina, qinisekisa njalo ukuthi inqubo yokumba ihambisana nezindinganiso ezimisiwe zemvelo.
Isikhathi sokuthumela: Mar-28-2023