Nheyo dzeKuchera Kutenderera Kwemvura (Reverse Circulation Drilling)
Kuchera gomba rakatwasuka hakusi chinhu chitsva. Vanhu vakachera matsime makore anopfuura 8,000 apfuura emvura iri pasi pevhu munzvimbo dzinopisa uye dzakaoma, kwete nePDC bits nemadhaka emugodhi sezvatinoita nhasi.
Pane zvinhu zvakawanda zvekufunga nezvazvo pakusarudza nzira yekuboorera. Izvi zvinonyanya kukosha kana uchiboorera kuti uongorore kana kudzora giredhi. Vazhinji vevagadziri vemakontrakita nemainjiniya epeturu vanowanzo sarudza kuchera ne reverse circulation nekuti zvinopa mabhenefiti akawanda pane dzimwe nzira dzekuboorera.
Tisati tataura mabhenefiti ekuchera bhora remusana, ngatitsanangurei kuti chii chinoita kuti mufananidzo uve wakajeka.
Chii chinonzi Reverse Circulation Drilling?
Kuboorera nekudzoka kwemhepo inzira yekuboorera inoshandisa kutenderera kwePDC mabhiti, uye tsvimbo dzine madziro maviri kuti zviboorerwe uye kuunganidzwa kwemuenzaniso. Madziro ekunze ane machubhu emukati anobvumira zvidimbu kuti zvidzoserwe pamusoro sezvo kuchera kuri kuenderera mberi.
Kutenderera kwemvura kunoramba kuchibvumira kusungirirwa kwezvivhura maburi asi kwakasiyana nekuboorwa kwedhaimani nekuti kunounganidza zvidimbu zvematombo panzvimbo pepakati pedombo. Chibooreso ichi chinoshandisa mabhiti akasarudzika ekutenderera kwemvura anofambiswa nepiston inodzokororwa nemhepo kana nyundo.
Zvidimbu izvi zvinoshandisa reverse circulation zvinogadzirwa ne tungsten, simbi, kana musanganiswa wezviviri izvi nekuti zvakasimba zvakakwana kucheka nekupwanya dombo rakaoma kwazvo. Kuburikidza nekufamba kwaro kwepiston, nyundo inogona kubvisa dombo rakapwanyika, iro rinozoendeswa pamusoro nemhepo yakamanikidzwa. Mhepo inovhuvhuta pasi pe annulus. Izvi zvinogadzira kuchinja kwekumanikidzwa kunoguma nekutenderera kwe reverse, izvo zvinoendesa zvidimbu zvichikwira nechubhu.
Kuchera matombo pasi pevhu (reverse circulation drilling) kwakanakira kuunganidza matombo ari pasi pevhu (underground rock matter) pakuongorora stratification uye kugadzira hwaro hwematombo.
Zvino zvawava kuziva kuti chii, ngatitarisei mamwe mabhenefiti ekuchera bhora remusana (reverse circulation drilling).
Inobatsira pakuwana mienzaniso isina kusvibiswa
Kuchera matombo nereverse circulation kunobvisa kusvibiswa kwematombo akachekwa pamatombo kana akaendeswa pamusoro, sezvo matombo acho achifamba nemuchubhu yemukati yakavharirwa ine buri rimwe chete pamusoro penzvimbo inotorwa sample. Saka, unogona kuunganidza sampuro dzakawanda dzemhando yepamusoro kuti dziongororwe.
Mitengo Inoshamisa Yekupinda
Mabhiti ereverse circulation akagadzirwa nehunyanzvi akasimba kupfuura mabhiti akajairwa ekupedzisa nekuda kwetungsten-steel composite tips. Madrill ereverse circulation anoshanda nekukurumidza uye anotora zvidimbu munguva pfupi. Kumhanya kunodzoserwa zvidimbu pamusoro kunogona kuoneka zviri nyore pamamita mazana maviri nemakumi mashanu pasekondi.
Kuchinja-chinja mumamiriro ezvinhu akaipa
Kuboora bhora rinotenderera nereverse hakusi kwakaoma uye hakudi mvura yakawanda. Izvi zvinoita kuti bhora rinotenderera nereverse rive rakanaka kunyangwe munzvimbo dzisina mvura yakawanda sekumaruwa makuru kana nzvimbo dzisina mvura yakawanda.
Zvishoma Zvinodhura
Kuchera dhiraivha reverse circulation kunodhura zvishoma, kunyanya kana tichienzanisa nekuchera nedhaimani. Kwete nekuda kwekudzikira kwemari yekushandisa, asiwo nekuda kwenguva pfupi inotora kupedzisa dhiraivha. Kazhinji, dhiraivha reverse circulation rinogona kudhura kusvika 40% pasi pedhiraivha remazuva ose. Kana uchichera munzvimbo dzine nzvimbo dzakaoma, kushanda kwemari kunogona kutowedzera kaviri.
Kutenderera Kwekutenderera Kwegiredhi Kudzora
Hunhu hwemasampuli akawanikwa hwakakosha zvikuru muchirongwa chekutsvaga kuti pave nekuronga kwakakodzera kwemigodhi kana kuti pakuisa zvinoputika. Kudzora giredhi ndiko kunoshandiswa kutsanangura mabhuroko nemagiredhi ematombo. Kuchera denderedzwa remvura (reverse circulation drilling) kwakanaka pakudzora giredhi nekuti:
- Zvinoda kugadziriswa kushoma pane dzimwe nzira
- Mienzaniso yakawanikwa haina chero chinhu chinosvibisa
- Nguva yekutendeuka nekukurumidza
- Mienzaniso inowanikwa inogona kuendeswa zvakananga kurabhoritari kuti iongororwe
Chinhu chakakosha pakuchera matombo kubva mugomba kuenda mugomba reverse circulation ndiko kuchekwa kwesample. Nzira dzakawanda dzinogona kushandiswa pakudzosa sample, asi chinangwa chikuru ndechekuwana samples dzemhando yepamusoro dzakawanda munguva pfupi.
Kana uchida chero mabasa ekudhirowa drill reverse circulation, yeuka kutsvaga nyanzvi dzine marezenisi chete dzinoziva nzira yavo yedrill reverse circulation uye dzinoziva maitiro akasiyana-siyana. Kumbira kuti vashandise chete mhando yepamusoro yakanyoreswa.kutenderera kwePDC mabhitikudzivirira kunonoka kunokonzerwa nekutyoka kwezvidhinha zvekuboorera. Chekupedzisira, gara uine chokwadi chekuti maitiro ekuboorera anoenderana nezvinodiwa zvakatipoteredza.
Nguva yekutumira: Kurume-28-2023