Baker Hughes, a GE company, has a new site. Want to see how we’re inventing smarter ways to bring energy to the world?
With BakerWrapXP, necking goes to the wayside
With most wrap-on-pipe screens, the main source of failure originates in the manufacturing process with a phenomenon known as “necking.” Necking, in engineering or material science, refers to a local reduction of a cross-sectional area of a tensile specimen that may occur during loading. In this case, the loading is caused by the heating effect of the wire to rib weld while tension is placed on the wire during the wrapping process. When wire is wrapped in conventional wrap-on-pipe screens, the force of wrapping can introduce localized points where the wire stretches and thins, introducing a weak point in the final product that may fail downhole. Once in service, the larger than desired gauge left behind from the necking phenomenon can and will exacerbate failure rates associated with “hot spotting.” This is a result of the high influx of produced solids outside the range of the desired screen gauge at these localized necking points.
BakerWrapXP mminimizes the impact of necking more than any other wrap-on-pipe product in the industry by using a novel manufacturing method that reduces the intrinsic “pull” of the wrapping process. With our shrink-to-fit methodology the metal wrap wire is fed onto the ribs as the pipe is rotated at a constant RPM. The wire wrap is then welded to the rib wire with minimum tension placed on the wrap wire during the feeding process. The actual cooling of the welding process enables the shrink fit of the jacket to the base pipe.
The end result is a sand control screen with increased reliability, longer service life and dramatically improved filtration capacity. All this combines to prevent washouts that can lead to erosion and shorten the service life of your completion assembly and, more importantly, your production.
Download the PDF to read more.