Njira Zopangira Roller Cone Bit.

1. Kuyang'anira Kutumiza Kwadongosolo

1) Kuyang'anira Zowoneka ndi Zolemba:

- Kuyeza kubowola pang'ono awiri.

- Onani zowonongeka pamalumikizidwe olumikizidwa.

- Onetsetsani kuti mano ndi zisindikizo zili bwino.

- Onetsetsani kuti ma cones odzigudubuza samagundana.

- Yang'anirani ming'alu kapena zolakwika za porosity mu nsonga zowotcherera.

2) Kuyika kwa Nozzle:

- Onetsetsani ukhondo wa nozzle ndi nyumba pa kukhazikitsa. Kumenya nyundo ndikoletsedwa kwambiri kupewa kuwononga mphuno ndi mphete zomata.

2. Bit Handling

1) Gwiritsani ntchito moyenerakubowola pang'onozolumikizira ndi zogwirira ntchito kuteteza kuwonongeka kwa ulusi, nozzles, ndi pang'ono thupi.

2) Pewani zida kuti zisagwe m'chitsime panthawi yogwira.

3) Ikani mafuta a ulusi.

4) Tsatirani magawo a torque omwe akulimbikitsidwa pakusonkhana:

- 17 1/2" pang'ono: Roller Cone: 46.1—54.2 KN·m; PDC: 65.5—71.9 KN·m.

- 12 1/4" pang'ono: Roller Cone: 37.9—43.3 KN·m; PDC: 50.3—57.5 KN·m.

-8 1/2" pang'ono: Roller Cone: 16.3—21.7 KN·m; PDC: 17—26.4 KN·m.

3. Kubowola ndi Kutsegula Mabowo

1) Yang'anirani liwiro lotsitsa kudzera pa chotchinga chowombera, mutu wa casing, magawo ocheperako, mapewa, ndi nsapato za casing.

2) Tsegulani dzenjelo pang'onopang'ono kudzera m'magawo ocheperako, mosamala kwambiri mukamagwiritsa ntchito ma PDC; kupopa kuyenera kuyambika musanatsegule dzenje.

3) Onetsetsani kutsika kosalala kuti mupewe ma spikes.

4) Cholumikizira chimodzi chomaliza kapena choyimira chiyenera kukhala ndi kuthamanga kwapamwamba kuti mutsegule dzenje pansi pa chitsime.

3. Chabwino Pansi Kufufuza

1) Pamene mukuyandikira pansi pa chitsime, yang'anani kuthamanga kwa kubowola ndi torque; kuwonjezeka kumasonyeza kukhudzana ndi pansi kapena mchenga wowunjikana.

2) Ngati mchenga ulipo, kwezani chingwe chobowola ndikuzungulira pamlingo wothamanga kwambiri kuti muwonetsetse kuyeretsa pansi.

3) Pambuyo poyeretsa, sunthani chingwe chobowola mmwamba ndi pansi.

4) Pobowola popanda mphamvu, gwiritsani ntchito 8 1/2" bit pa 17 KN ndi 12 1/4" pa 25 KN, ndi liwiro la 40-60 RPM.

5) Pobowola mwamphamvu, gwiritsani ntchito 8 1/2" bit pa 17 KN ndi 12 1/4" pa 25 KN ndi liwiro lotsika kwambiri.

5. Kubowola Kupyolera mu Mapulagi a Cement ndi Casing Accessories

1) Pitirizani kukweza ndikutsitsa chingwe chobowola panthawi yozungulira ndikuzungulira kuti muyeretse pang'ono.

2) Yang'anirani kuthamanga kwa kubowola kuti mupewe kuwonongeka kwa kudula mano ndi kubala zisindikizo.

3) Yang'anirani kuthamanga kwa mpope kuti mupewe kutsekeka kwa nozzle.

4) Sinthani liwiro lozungulira ngati pali kusintha kwakukulu pakubowola kapena torque.

5) Gwiritsani ntchito kubowola kocheperako komanso kuzungulira pang'onopang'ono kwa torque yokhazikika: kubowola koyendetsedwa ndi mphamvu kuyenera kukhala ndi liwiro loyenda bwino; Kubowola kopanda mphamvu kuyenera kugwiritsa ntchito madzi othamanga kwambiri.

6) Kwezani ndi kutsegula dzenje lililonse mamita 4-5 pamene kubowola kudzera pulagi simenti, kuchita zimenezi nthawi 2-3, ndi kusamba chitsime pa otaya mkulu kwa masabata 1-2 iliyonse 25-30 mamita kuonetsetsa kufalitsidwa wathunthu wa zinyalala simenti pamwamba.

6. Chabwino Bottom Shaping

1) Gwiritsani ntchito kuthamanga kwa kubowola kochepa, kuzungulira pang'onopang'ono, kuthamanga kwambiri, ndi torque yotsika.

2) Kujambula pansi pa chitsime kumatengera mtundu wa bit ndi kuphatikiza zida.

3) Pazitsulo zodzigudubuza, zimagwira ntchito pa 40-60 RPM ndi kubowola kuthamanga kwa 35 KN kwa 17 1/2", 24 KN kwa 12 1/4", ndi 17 KN kwa 8 1/2", kusunga osachepera mphindi 30 za kubowola.

4) KwaZithunzi za PDC, ntchito pansi pa 2 matani kubowola kuthamanga pa 60-100 RPM, kuonjezera kuthamanga ndi kusintha liwiro pambuyo kubowola osachepera 1-1.5 mamita.

7. Kubowola Kuyesa Kuti Mudziwe Ma Parameter Oyenerera

1) Kubowola m'mayesero ndi njira yabwino yodziwira kuphatikizika koyenera kwa kuthamanga kwa kubowola ndi liwiro lozungulira kuti mukwaniritse mitengo yoboola yamakina.

2) Pangani kubowola koyeserera pakakhala kusintha kwa mapangidwe, kuchuluka kwa kubowola kwamakina, torque, ogwira ntchito, kapena magawo ogwiritsira ntchito monga matope ndi ma hydraulics.

3) Yambitsani kuyesa pakubowola pa liwiro lotsika, ndikukakamiza kubowola kumayikidwa pamlingo wovomerezeka pang'ono.

4) Pamene mawotchi okwera amatha kutheka podutsa kukakamiza kobowola kosiyanasiyana ndi kuphatikizika kwa liwiro, sankhani otsika kwambiri osadumpha kuthamanga-liwiro kuti atalikitse moyo pang'ono.

5) Kuthamanga koyenera kwa kubowola ndi kuthamanga kuyenera kutsogozedwa ndi ma endpoints ndi ma torque.