Kauj ruam 1: Thaum drilling pib, lub kaw lus tsav lub casing khau thiab casing raj txav mus.
Kauj Ruam 2: Thaum ncav cuag lub hauv paus, nqa lub kaw lus thaiv, cov blocks yuav kaw, thim rov qab thiab rub tawm cov txheej txheem thaiv ntawm lub qhov.
Kauj Ruam 3: Yog tias lub qhov tau ncav cuag qhov xav tau qhov tob, ua kom tiav qhov drilling thiab txuas ntxiv lwm cov txheej txheem.
Kauj Ruam 4: Yog tias koj tseem xav xyaum qhov tob dua, siv cov qauv DTH me me los laum mus rau qhov xav tau qhov tob.