WorldWide Drilling Resource

D-Geo Pipeline Software for Horizontal Directional Drilling Adapted from Information by Deltares Pipelines are lifelines of our modern society, as well as an important part of underground infrastructure. The successful long-term operation of a pipeline system is largely determined by the quality of the engineering works prior to the installation of the pipeline. D-Geo Pipeline software provides tools for the design of pipelines in trench and trenchless installations, using the microtunnelling technique or the horizontal directional drilling (HDD) technique. The software allows the user to minimize the risks during and after installation. In HDD, three installation stages are considered - pilot drilling, reaming the initial pilot borehole, and pulling back the pipeline. Features of the software include advanced input of the groundwater pressure distribution; drained and undrained be- havior of soil layers; graphical output of calculated drilling fluid pressures; library with steel and polyethylene pipelines; standard calculation scheme for bundled pipelines; calculation of settlement of the soil layers below the pipeline; and standard pipe stress analysis. The minimal required drilling fluid pressure is the pressure necessary for an effective return flow capable of transporting cut soil particles toward the surface. The upper boundary of the allowable drilling fluid pressure indicates the pressure at which a blowout is likely to occur. The lower boundary indicates the pressure at which fractures around the borehole are expected. Both minimum and maximum allowable drilling fluid pressure depend on depth and soil properties. Drilling fluid pressures are calculated for all installation stages, as well as along the entire borehole, and visualized in a graph showing both the upper and lower boundary. D-Geo Pipeline HDD is capable of dealing with pipelines made of different materials. For steel and polyethylene, a database containing the material data is available, which enables a quick recalculation for alternative material types and dimensions. The software also calculates the pulling force required to pull the pipeline into the prereamed borehole. The pullback force is based on buoyancy control and consideration of the soil-pipeline interaction in the bends of the drilling line. Soil mechanical parameters are used for a pipeline stress analysis. The standard pipeline stress analysis by D-Geo Pipeline HDD is based on a limited set of parameters. The software calculates the stresses in the pipeline during the installation stages in both axial and tangential direction. In a comprehensive report, a stress verification is given for each pipeline material used. The pipeline stress report contains used input data; calculated axial, tangential, and combined stresses for all installation stages; verification of the pipe stresses; check on pipeline deflection; and check on implosion for polyethylene pipelines. CUSTOM SPECIALTY WINCHES FOR WELL DRILLING AND PUMP HOIST TRUCKS Manufactured with your specifications in mind BLOOM MANUFACTURING, INC. Custom Engineering Solutions Since 1910 Independence, IA 50644 USA www.bloommfg.com P: +1 319-827-1139 P: 800-394-1139 F: +1 319-827-1140 DESIGNED FOR OUTSTANDING PERFORMANCE & SAFETY MAINLINE WINCHES 3000 to 35,000 pounds Up to 130 feet per minute SANDLINE WINCHES 1800 to 8000 pounds Up to 800 feet per minute WINCHES 44 NOVEMBER 2019 WorldWide Drilling Resource ® DIR