Aberdeen-based TCO In-Well Technologies UK Limited, a provider of well completion technologies to the global oil & gas industry, has successfully completed a Glass Barrier System well opening application for Apache North Sea Limited. The operation, thought to be worth a five figure sum, involved TCO UK’s patented TDP-I Glass Plug being deployed on the Apache operated Forties Delta Platform on well FD3-5. The plug was used to isolate the reservoir allowing the operator to test for integrity before opening the well. Joel Rodriguez, senior completions engineer at Apache, said: “The TCO TDP-I plug, set at almost 4000 meters at 71 degrees, opened on the prescribed pressure cycle, eliminating the need for an additional intervention run.