Tubular products in pipe mills are produced by different methods in wide range of sizes and materials for various applications . From simple ERW steel tubes to high quality and expensive seamless tubes, depending on the application, different NDT techniques are used extensively. All these tests are implemented to fulfil the required specification or standard as well as for condition monitoring ...

As oil and gas industry is developing towards deeper ocean area, the length flexibility of pipes become larger, which may induce larger-amplitude displacement flexible pipe response due to lower structural stiffness against environmental operational loads. Moreover, these also convey internal flow. In other words, dynamic characteristics flow-conveying face great challenge, such as bucking flut...

The exploitation of natural gas deposits also requires the transport extracted fluids through pipelines to their treatment facilities. Usually contain, in addition methane, ethane, liquid fractions propane, butane, hexane and sometimes salt water associated with deposit. Given that delivery for consumption must be carried out without oil liquids, flow rates extraction wells are taken two-phase ...

This article aims to study the effect of concentration with additives on kinematic viscosity crude oils. Additionally, influence solvents that reduces heavy oil significance their functions in flow rate oil, which is transported by conveyor pipes long distances. Different concentrations polymers different types named as Polyvinyl chloride (PVC), Sodium dodecyl sulfate (SDS) and Carboxymethyl ce...

the aim of this research is to simulate oil spill behavior in the persian gulf due to the wind andtidal currents. this is achieved by coding an oil spill mathematical model consisting of several major submodels including hydrodynamic model, oil slick dynamic model and oil weathering model. the base of all of them is eulerian approach and they are coupled together to simulate spill incident in t...

Dynamic analysis of supported pipes conveying pulsating fluid is investigated in Hamiltonian system using precise integration method PIM . First, symplectic canonical equations of supported pipes are deduced with state variable vectors composed of displacement and momentum. Then, PIM with linear interpolation formula is proposed to solve these equations. Finally, this approach’s precision is te...

The objectives of this study were to investigate migration of volatile organic compounds (VOCs) from cross-linked polyethylene (PEX) pipes used for drinking water produced by different production methods, and to evaluate their potential risk for human health and/or influence on aesthetic drinking water quality. The migration tests were carried out in accordance with EN-1420-1, and VOCs were ana...

Hydrogen sulfide (H2S) is a toxic gas with an offensive odour reminiscent of rotten eggs. There is the potential for widespread occupational exposure to H2S, including in the oil and water treatment industries. There is a particular concern for exposure in confined spaces such as manholes and sewer pipes; the high concentrations that can build up in such conditions (> 1000 parts per million (pp...