Sökning: "drill string handling"

Hittade 2 uppsatser innehållade orden drill string handling.

  1. 1. Påldrivning: Jämförelse mellan luft- och vattendriven borrning : En utredning av jämförelser avseende slitage, logistik och driftkostnader

    Kandidat-uppsats, KTH/Byggteknik och design

    Författare :Andreas Bengtsson; Pierre Bodin; [2022]
    Nyckelord :: percussion hammer; pilot; DTH; pile driving; wear; drill rig; casing; piston; check valve; water-handling; sedimentation; : sänkhammare; pilot; DTH; pålning; slitage; borrigg; foderrör; kolv; backventil; vattenhantering; sedimentering;

    Sammanfattning : Skanska Grundläggning in Region Special wishes to gain an increased understanding of the extent to which it differs in the wear of percussion hammers and pilot drill crowns, depending on which driving medium is used in down-the-hole drilling, as well as logistical and economic aspects depending on the chosen method. Down-the-hole drilling means that the hammer works down in the borehole and forms one of the components at the far end of the drill string together with a drill bit. LÄS MER

  3. 2. Alternative Drill String Handling System for a Mobile Raise Boring Machine

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Felix Englund; Albin Värmhed; [2021]
    Nyckelord :Mining equipment; mobile raise boring; drill string handling; concept development; Gruvmaskin; stigortsborrning; hanteringssystem för borrsträngskomponenter; konceptutveckling;

    Sammanfattning : The work presented is a master’s thesis at the track Machine Design at KTH Royal Institute ofTechnology. The project was commissioned by Epiroc AB through Svea Teknik AB. Epiroc’s Easer L is a highly versatile and flexible mobile raise boring machine used to drill opening holes and media holes. LÄS MER