![]() Huey DP, Hair JD, McLeod KB (1996) Installation loading and stress analysis involved with pipelines installed in horizontal directional drilling. KSCE Journal of Civil Engineering 24(4):1307–1317, DOI: Guo Z, Xie S, Ren L, Ren L, Dong C, Gong Y (2020) Pipeline pull-back load analysis by continuous beam theory. KSCE Journal of Civil Engineering 22(12):5133–5142, DOI: Guo Z, Liang Z (2018) Analysis of the pipeline pull-back load for horizontal directional drilling. C, Houston, TX, USAĭriscopipe (1993) Technical expertise: Application of driscopipe in directional drilling and river crossings. Elsevier Science Publishers, Amsterdam, The Netherlandsĭrillpath T M (1996) Drillpath theory and user’s manual. Tunnelling and Underground Space Technology 22(5–6):633–643, DOI: Ĭhilingarian GV, Vorabutr P (1983) Drilling and drilling fluids, updated textbook. Journal of Geotechnical & Geoenvironmental Engineering 138(4):432–440, DOI: (ASCE)GT.1943-5606.0000608Ĭheng E, Polak MA (2007) Theoretical model for calculating pulling loads for pipes in horizontal directional drilling. Journal of China University of Petroleum 34(6):114–119Ĭhehab AG, Moore ID (2012) Analysis for long-lerm response of pipes installed using horizontal directional drilling. Canadian Geotechnical Journal 41(4):672–685, DOI: Ĭai L, Xu G, Polak MA, Knight MA (2010) Prediction model of pulling loads in horizontal directional drilling installations and its characteristic parameter sensitivity analysis. ![]() Journal of Infrastructure Systems 8(1):12–19, DOI: (ASCE)1076-0342(2002)8:1(12)īaumert ME, Allouche EN, Moore ID (2004) Experimental investigation of pull loads and borehole pressures during horizontal directional drilling installations. ASTM F1962-11, ASTM International, West Conshohocken, PA, USAīamert ME, Allouche EN (2002) Methods for estimating pipe pullback loads for horizontal directional drilling (HDD) crossings. ![]() The field test proves that the model can predict the rig load accurately when installing pipes in water-rich unstable strata.ĪSTM F1962-11 (1962) Standard guide for use of maxi-horizontal directional drilling for placement of polyethylene pipe or conduit under obstacles, including river crossings. For lighter high-density polyethylene (HDPE) pipes, using the mud with good lubrication function is the most effective to reduce the maximum rig load, however, for heavier steel pipes, the most effective way to reduce the maximum rig load is choosing pipe delivery method with less resistance. The results show that pullback capability of rig should be determined by the maximum rig load instead of the maximum pull head load. The accuracy of the model is verified by comparison with existing models and field tests. In this study, a model that takes into account the influence of the drill string and the soil pressure was developed to predict rig pulling load. Existing models cannot directly calculate the rig pulling load during the pull-back process. The main functions of the fluid are to blend with the soil cuts produced during the drilling process and transport them to the entry pit, to mantain the tunnel stabilized and to lubricate the drilling tip.In horizontal directional drilling (HDD) construction, the rig pulling load is the load directly applied to the rig, which is an important basis for selecting power and checking capability of drilling equipment. Typically this system contains a storage tank with fluid reserves to guarantee a constant supply of fluids to the drilling process. Drilling fluids system: Consists on a bentonite, polymer and wáter mixing pump, which injects the fluid trough the drilling pipes all the way to the drilling tip. ![]() The operator of the tracker can visualize the information emitted by the probe in real time so it can help the dirlling rig’s operator to make decisions on the directional alingment of the drilling and continue with the correct route, previously planned. Guidance system: It consists of an emitter probe and a walkover tracker, which function is to receibe information on surface and retrasnmit it to a screen located at the drilling rig.In addition, the sonde housing is preceded by the drill tip, which function is to cut the terrain and advance with the directional drilling thanks to its asimetrical shape. The drill pipes are preceded by a sonde housing wich contains an electrical probe that transmits in real time the depth, inclination and orientation of the drilling head, as well as other important parameters. Drill Rig: Refers to the equipment in charge of generating two main movements thrust and rotation of the drill pipes.Horizontal directional drilling system consists on 3 main subsystems:
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