Views: 0 Author: Site Editor Publish Time: 2023-05-10 Origin: Site
In the case of oil wells pumping is a routine operation that involves injecting fluids into the well.Pumping can be done through a kill wing valve fitted to the Christmas tree or if an intervening device is present, through a T-piece (a small section of the riser with connections on the side) into the riser.The most common way of pumping is to prevent scale and hydrate in oil wells by pumping antiscalants and methanol.Kill brines can be pumped for killing purposes, and more exotic chemicals can be pumped from the surface to clean lower completions or stimulate reservoirs (although these types of work are done more frequently with coiled tubing for precision ).
Working with oil wells is fraught with difficulties because there is often little information about what is happening in real time when the well is being completed.This lack of knowledge also includes potential damage or even loss of well integrity.Therefore, the operator must pay attention to the recorded pressure and the volume pumped.A premature increase in pressure is a sign of a potential blockage, and continued pumping risks bursting the pressure retaining components.Pumping more fluid than expected is a sign of a loss of integrity and a potential leak path somewhere.Either of these two conditions must stop pumping and analyze possible causes.
Scaffolding.A scaffold, also known as a scaffold or stage is a temporary structure used to support workers and materials to aid in the construction, maintenance, and repair of buildings, bridges, and all other man-made structures. Scaffolding was used extensively on site to gain access to heights and areas that would otherwise be difficult to reach.Unsafe scaffolding has the potential to result in death or serious injury.Scaffolding is also used in adapted forms for formwork and bracing, grandstand seating, concert stages, aisles/observation towers, exhibition stands, ski slopes, halfpipes, and art projects.There are five main types of scaffolding used in the world today.These are tube and coupler (fitting) assemblies, prefabricated modular system scaffolding assemblies,H-frame/facade modular system scaffolding, timber scaffolding and bamboo scaffolding (especially in China and India).Each type is made up of several components, usually including:
Pedestal jacks or plates as load-bearing bases for scaffolding.
Standard upright assembly with connector connections.
Ledger, horizontal support.
Beams, load-bearing elements of horizontal cross-section, used to fasten battens, planks or deck units.
Support diagonal and/or cross-sectional support components.
Batten or board decking components for making work platforms.
Coupler, an accessory used to connect components together.
Scaffold ties for attaching the scaffold to the structure.
Brackets to extend the width of the work platform.
Dedicated components to aid in its use as a temporary structure typically include heavy load bearing beams for scaffolding access, ladder or stair units, beam ladder/unit types for crossing obstacles and waste chutes for removal of unwanted material from scaffolding or construction projects.