As a privately held company, Duphil has experienced steady growth over the years while maintaining the highest quality servic ... es and building an outstanding reputation. We are a solutions-based contractor that offers everything from strategic planning and scheduling, construction management, logistics, procurement and more. Led by a team of highly experienced professionals, we are committed every day to supplying our customer base a product on time and budget, while at the same time maintaining the highest levels of safety and environmental stewardship. Our culture, experience, and most importantly our people set us apart within the industry. Pipeline Services including: Mainline pipeline construction Marshland construction Pump and compressor stations Directional and convention boring Scheduling - Time Line All phases of civil and dirt work Well connects Lowering and relocations R.O.W. cutting and clearing Pressure testing and repair Maintenance of pipeline right of way and easement Under water construction to correct unstable pipeline elevations due to erosion Repair of pipeline, canals, closures, ditches, crossings and right of way utilizing geotubes as a permanent/hard foundations as well as other erosion control products and techniques. Oilfield Services including: Site preparation for drilling purposes Site restoration including clean up of drilling locations, treating and pumping of drill fluids down hole; as well as production pit closures / 29B Reserve pit and ring levee construction Board road installation Construction and maintenance of production pads temporary and permanent roads Installation of gathering line and transmission lines up to 12 inch, 100% X-Ray Connection of all production equipment All lease maintenance, roustabout, and Hook-up crews Draglines and pile driving Mitigation projects (i.e. digging of ponds, planting, building of containment levees using hay bales or other required material) read more