Mapangidwe a valve a nyundo ya DTH amapereka ntchito yodalirika, kutsika kwa mpweya, kukonza kosavuta komanso kumanganso kopanda mtengo.Chithunzi mwachilolezo cha Caterpillar.
Nyundo ya DTH ndi mainchesi 6 m'mimba mwake ndipo inali yoyamba kulowetsedwa mu mzere wa mankhwala a DTH. Malingana ndi kampaniyo, mapangidwe ake a valve amapereka ntchito yodalirika, kutsika kwa mpweya, kukonza kosavuta komanso kumanganso ndalama.Kuonjezera apo, mapangidwe a pistoni amapereka moyo wautali komanso kusamutsa mphamvu moyenera.
Nyundo imatha kugwira ntchito ndi mpweya woponderezedwa mpaka 500 psi. Izi zowonjezera zowonjezera kumbuyo, kuphatikizapo mpweya wofanana womwe umafunika, zimapanga nkhonya zambiri pamphindi, zomwe zimapangitsa kuti ziwonjezeke mofulumira.
Komanso amapereka kubowola kwa pansi-the-hole drilling.The bits tsopano akupezeka mu masanjidwe angapo osiyanasiyana (6.75 mainchesi) mu muyezo ndi heavy-ntchito Mabaibulo kufanana ndi tizigawo to rock katundu ndi ntchito zofunika.
Zosankha zapang'ono zimaphatikizapo mitundu yosiyanasiyana ya carbide (yozungulira, yozungulira) ndi mawonekedwe a nkhope (concave, flat, convex), ndipo amakometsedwa kuti asamavale kwambiri komanso amawongolera miyala. kupereka kwapadera malowedwe.
Nthawi yotumiza: May-24-2022