Drilling cuttings in super-long bored pile holes tend to accumulate at the base, potentially reducing the pile’s bearing capacity if not effectively removed. This study presents a theoretical analysis of the settling velocity of drilling cuttings and the return velocity of mud in super-long pile holes. In addition, it proposes a method for determining the upward return of drilling cuttings during the positive and reverse circulation hole cleaning. The effects of various drill pipe rpm, mud inlet velocities, particle diameters, mud densities, and mud viscosities on the cuttings carrying performance of mud were investigated using the Ansys Fluent fluid simulation software. The results indicated that as the mud viscosity increased, the sedimentation rate of the drilling cuttings decreased, leading to a more effective mud carrying effect. The mud density was adjusted dynamically based on actual working site conditions. Increasing the diameter of the drilling cuttings particles did not promote effective cuttings carrying by the mud. However, increasing the drill pipe rpm, mud inlet velocity, density, and viscosity could enhance the cuttings carrying effect. These findings provide valuable theoretical guidance for mud circulation hole cleaning in the construction of super-long bored piles.
MaB. H.CaiK.GuoJ.LiZ.HuZ.ChenQ.HuangX.Theoretical Analysis on the Vertical Bearing Characteristics of Pile Foundations Containing Sediment Defects. Lithosphere, Vol. 2021, 2021, p. 14.
2.
XuM.NiP.MeiG.ZhaoY.Load-Settlement Behaviour of Bored Piles with Loose Sediments at the Pile Tip: Experimental, Numerical and Analytical Study. Computers and Geotechnics, Vol. 102, 2018, pp. 92–101.
3.
XuM.NiP.DingX.MeiG.Physical and Numerical Modelling of Axially Loaded Bored Piles with Debris at the Pile Tip. Computers and Geotechnics, Vol. 114, 2019, p. 13.
4.
PoulosH. G.Pile Behavior—Consequences of Geological and Construction Imperfections. Journal of Geotechnical and Geoenvironmental Engineering, Vol. 131, 2005, pp. 538–563.
5.
DongJ. R.Enhanced and Weakened Effect of Skin Friction of Cast-in-Situ Piles. Chinese Journal of Geotechnical Engineering. Vol. 31, No. 5, 2009, pp. 658–662.
6.
Technical Specifications for Construction of Highway Bridges and Culverts (JTG/T 3650—2020). Industry Standard of the People’s Republic of China, China Communications Press, Beijing, 2020.
7.
ZhangZ.ZhangQ.LuoJ.LinX.Construction Technology and Pile Quality Analysis of Super-Long Rock-Socketed Pile Crossing a Huge-Thick Gravel Layer. Chinese Journal of Rock Mechanics and Engineering, Vol. 29, Supplement 2, 2010, pp. 4016–4026.
8.
ZhouZ. Y.ZhangC. Y.Causes and Solutions for the Common Problems in Rotary Drilling Cast-in-Place Pile Construction. Applied Mechanics and Materials, Vol. 580, 2014, p. 52.
9.
WangJ. H.ZhangH. Y.LiL. S.Construction Technologies for Rotation-Drilling of Super Long Pile in Compllicated Geological Conditions. Highway, Vol. 61, No. 6, 2016, pp. 151–155.
10.
WangW. D.Research on the Application of Combined Drilling Technology of Positive and Reverse Circulation Slag-Discharge in Large-Diameter Ultra-Long Pile Hammer Drill. Highway, Vol. 65, No. 10, 2020, pp. 159–164.
11.
SongX.XuZ.WangM.LiG.ShahS. N.PangZ.Experimental Study on the Wellbore-Cleaning Efficiency of Microhole-Horizontal-Well Drilling. SPE Journal, Vol. 22, 2017, pp. 1189–1200.
12.
GulraizS.GrayK. E.Study on the Combined Effect of Thixotropy, Particle Shape, and Particle Size on Cuttings Transport in Horizontal Annuli. Powder Technology, Vol. 392, 2021, pp. 703–716.
13.
Al-MalkiM.MahmoudA. A.ElkatatnyS.Performance of the Hole Cleaning Factor in Predicting the Hole Cleaning Conditions in Vertical and Deviated Wells: Real Case Studies. Arabian Journal for Science and Engineering, Vol. 48, 2023, pp. 17119–17127.
14.
OsehJ. O.NorddinM.IsmailI.GbadamosiA. O.AgiA.IsmailA. R.ManogerP.RavichandranK.Enhanced Cuttings Transport Efficiency of Water-Based Muds Using (3-Aminopropyl) Triethoxysilane on Polypropylene-Nanosilica Composite. Arabian Journal of Chemistry, Vol. 13, 2020, pp. 6904–6920.
15.
HeshamudinN. S.KatendeA.RashidH. A.IsmailI.SagalaF.SamsuriA.Experimental Investigation of the Effect of Drill Pipe Rotation on Improving Hole Cleaning Using Water-Based Mud Enriched with Polypropylene Beads in Vertical and Horizontal Wellbores. Journal of Petroleum Science and Engineering, Vol. 179, 2019, pp. 1173–1185.
16.
GhasemiKafrudiE.HashemabadiS. H.Numerical Study on Cuttings Transport in Vertical Wells with Eccentric Drillpipe. Journal of Petroleum Science and Engineering, Vol. 140, 2016, pp. 85–96.
17.
BuschA.JohansenS. T.Cuttings Transport: On the Effect of Drill Pipe Rotation and Lateral Motion on the Cuttings Bed. Journal of Petroleum Science and Engineering, Vol. 191, 2020, p. 27.
18.
FouedB.VameghR.Simulation of Settling Velocity and Motion of Particles in Drilling Operation. Journal of Petroleum Science and Engineering, Vol. 196, 2021, p. 21.
19.
QianH. S.ZhangH. J.ChenB.Editing Software for Judging Whether Cuttings Can Ascend Smoothly in Drilling Fluid. Inner Mongolia Petrochemical Industry, Vol. 41, No. 17, 2015, pp. 54–56.
20.
AkhshikS.BehzadM.RajabiM.CFD-DEM Approach to Investigate the Effect of Drill Pipe Rotation on Cuttings Transport Behavior. Journal of Petroleum Science and Engineering, Vol. 127, 2015, pp. 229–244.
21.
GuptaA.ClercxH. J. H.ToschiF.Effect of Particle Shape on Fluid Statistics and Particle Dynamics in Turbulent Pipe Flow. The European Physical Journal E, Vol. 41, 2018, p. 15.
22.
XiaoC.NiH.WangR.HuoH.ShiX.LiM.Study on Horizontal Wellbore Flow of Supercritical Carbon Dioxide Drilling. Applied Thermal Engineering, Vol. 175, 2020, p. 15.
23.
StokesG. G.On the Effect of the Internal Friction of Fluids on the Motion of Pendulums. Cambridge University Press, Pitt Press by John W. Parker, Cambridge, 1851.
24.
SchillerL.NaumannZ.A Drag Coefficient Corre-lation. Verein Deutscher Ingenieure, Vol. 77, 1935, pp. 318–320.
25.
CliftR.GauvinW.Motion of Particles in Turbulent Gas Streams. British Chemical Engineering, Vol. 16, 1971, p. 229.
26.
PedrosaC.SaasenA.YtrehusJ. D.Fundamentals and Physical Principles for Drilled Cuttings Transport-Cuttings Bed Sedimentation and Erosion. Energies, Vol. 14, 2021, p. 13.
GaoQ.HuQ.ZhangJ.RenZ.LiuC.LiuJ.WangS.ChengG.ZhangR.RenC.Experimental Study on Wall-Protecting Mud Modification of Super-Long Bored Pile in the Alluvial Plain Region of the Yellow River. Construction and Building Materials, Vol. 368, 2023, p. 130395.
29.
QuL.Highway Bridge Construction Series Manual. China Communications Press, Beijing, 2014.
30.
SpezialeC. G.GatskiT. B.FitzmauriceN.An Analysis of RNG Based Turbulence Models for Homogeneous Shear Flow. Physics of Fluids A: Fluid Dynamics 3, Vol. 3, No. 9, 1991, pp. 2278–2281.
31.
YakhotV.OrszagS. A.ThangamS.Development of Turbulent Models for Shear Flows by a Double Expansion Technique. Physics of Fluids A: Fluid Dynamics 4, Vol. 4, No. 7, 1992, pp. 1510–1520.
32.
ZhangH.HanW.XuY.ZhuM.LiuZ.WangZ.Migration Characteristics of Boring Mud in Roadway Floor Anchor Wire Hole and Test in Coal Mine. Advances in Civil Engineering, Vol. 2021, No. 1, 2021, p. 9.
33.
HuqueM. M.ButtS.ZendehboudiS.ImtiazS.Systematic Sensitivity Analysis of Cuttings Transport in Drilling Operation Using Computational Fluid Dynamics Approach. Journal of Natural Gas Science and Engineering, Vol. 81, 2020, p. 17.
34.
MoravejiM. K.SabahM.ShahryariA.GhaffarkhahA.Investigation of Drill Pipe Rotation Effect on Cutting Transport with Aerated Mud Using CFD Approach. Advanced Powder Technology. Vol. 28, 2017, pp. 1141–1153.
35.
HuilinL.GidaspowD.Hydrodynamics of Binary Fluidization in a Riser: CFD Simulation Using Two Granular Temperatures. Chemical Engineering Science. Vol. 58, No. 16, 2003, pp. 3777–3792.
36.
GidaspowD.BezburuahR.DingJ.Hydrodynamics of Circulating Fluidized Beds: Kinetic Theory Approach a Generalized Method for Predicting the Minimum Fluidization Velocity. AIChE Journal, Vol. 12, No. 3, 1991, pp. 610–612.
37.
ErgunS.Fluid Flow through Packed Columns. Chemical Engineering Progress, Vol. 48, No. 2, 1952, pp. 89–94.
38.
WenC. Y.YuY. H.A Generalized Method for Predicting the Minimum Fluidization Velocity. AIChE Journal, Vol. 12, No. 3, 1966, pp. 610–612.
39.
Ministry of Construction of the People’s Republic of China. Code for Investigation of Geotechnical Engineering (GB50021-2001). China Architecture & Building Press, Beijing, 2002.
40.
American Petroleum Institute. Field Testing Water-based Drilling Fluids (API RP 13B-1). American Petroleum Institute, Washington, D.C., 2023.
41.
HirpaM. M.ArnicallyS. K.BizhaniM.KuruE.GelvesG.Al-RatiaI.Effect of Particle Size and Surface Properties on the Sandbed Erosion with Water Flow in a Horizontal Pipe. SPE Journal, Vol. 25, 2020, pp. 1096–1112.
42.
PeidongS.Pile and Pile Foundation Handbook. China Communication Press, Beijing, 2009.
43.
JiaoN.WangY. S.MengC. X.Numerical Simulation on the Flow Field and Slag Carrying Efficiency of Air Flush Drilling for Vertical Shaft Boring Machine. Journal of China Coal Society, Vol. 45, Supplement 1, 2020, pp. 522–531.
