Search results
Horizontal directional drilling (HDD) technology has made great progress since the first HDD rig was built in 1964 (Mohammad and Sanjiv, 2004). At present, the maximum push-pull capacity of drill rig reaches 600t and the applicable formations extend from clay and sand to gravel, permafrost (Hair, 2011) and part of rock.
Feb 1, 2018 · Horizontal Directional Drilling (HDD), with origins in the oil and gas industry, is a trenchless technology employed to install underground pipelines with minimal impacts on the environment or damage to existing infrastructure such as roadways and other surface structures. The process starts with the surface launched drilling of a pilot hole along the designed design path at an entry angle of ...
Feb 1, 2018 · Horizontal Directional Drilling (HDD), with origins in the oil and gas industry, is a trenchless technology employed to install underground pipelines with minimal impacts on the environment or damage to existing infrastructure such as roadways and other surface structures. The process starts with the surface launched drilling of a pilot hole along the designed design path at an entry angle of ...
Sep 1, 2020 · Horizontal Directional Drilling (HDD) is gaining increasing interest in the engineering practice because of its relatively low cost, environmental impact, land use and project timeline. Despite its efficiency, HDD relies on empirical and iterative design. To aid routine design procedures, we applied an Ant Colony Optimization (ACO) algorithm to automatically minimize the drill path length ...
Sep 1, 2007 · Horizontal directional drilling (HDD) is a trenchless construction method typically used for the installation of small-to-medium sized pipelines and conduits at relatively shallow depths by using a surface-mounted rig (Bennett et al., 1995, Marshall et al., 2001).
Oct 1, 2017 · Horizontal directional drilling (HDD) technology has made great progress since the first HDD rig was built in 1964 (Mohammad and Sanjiv, 2004). At present, the maximum push-pull capacity of drill rig reaches 600t and the applicable formations extend from clay and sand to gravel, permafrost (Hair, 2011) and part of rock.
Feb 1, 2023 · Horizontal directional drilling (HDD) is a widely used trenchless method for underground utility connections. The associated ground settlement triggered by HDD depends on the size, types, and surface texture of pipe, diameter of borehole, and soil conditions. The present study investigates the surface settlement due to the construction of a ...
Mar 1, 2020 · During horizontal directional drilling installations, a primary function of drilling fluids is to yield drill cuttings and lubricate the product pipe. This paper presents the results of a research study of drilling fluid parameters, and the filter cake properties associated with drill cutting intrusions. Different sand meshes and field cutting ...
Horizontal drilling is a process of directing a bit to drill along a horizontal path oriented approximately 85 to 95° from a vertical direction, whereas multilateral drilling is a process of drilling lateral holes from a main trunk such as horizontal, vertical, or directional (Fig. 13). Figure 13. Multilateral wells.
Aug 1, 2022 · Wang and Sterling (2007) used ADINA to investigate horizontal borehole instability during Horizontal Directional Drilling in sand, and they employed two different approaches to representing mud impact on the soil i.e. with and without explicit consideration of the filter cake (when mud infiltrates into soil, bentonite will be left forming a thin, denser layer around the borehole). They ...
