Abstract: Debris flows that entrain sediment by undermining channel beds or scouring channel banks can become exceptionally mobile and destructive. Therefore, the calculation of entrainment plays an important role in debris flow ...

Abstract: One of the critical issues that engineers, contractors, and owners encounter during horizontal directional drilling (HDD) is inadvertent return of drilling fluid (frac-out or hydraulic fracture) to the ground surface when ...

Abstract: Hole cleaning is a significant issue in well drilling, and this problem becomes more severe in horizontal directional drilling (HDD). One of the main functions of the drilling fluid is to transport cuttings from the borehole ...

Abstract: In horizontal directional drilling (HDD), accurate determination of the pullback force for pipe installation (pullback) during the design phase is critical to the success of the project. For the calculation of pullback ...